/* ===== MODERN TIMER WEBSITE DESIGN ===== */

/* CSS Custom Properties (Variables) */
:root {
    /* Primary Colors - Modern Blue Gradient */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;

    /* Accent Colors */
    --accent-50: #fef3c7;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;

    /* Neutral Colors */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Success & Error */
    --success-500: #10b981;
    --success-600: #059669;
    --error-500: #ef4444;
    --error-600: #dc2626;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Timer Specific Variables */
    --timer-circle-size-mobile: 200px;
    --timer-circle-size-tablet: 260px;
    --timer-circle-size-desktop: 320px;
    --timer-circle-size-large: 380px;

    --timer-stroke-width-mobile: 8px;
    --timer-stroke-width-tablet: 10px;
    --timer-stroke-width-desktop: 12px;
    --timer-stroke-width-large: 14px;

    --timer-text-size-mobile: 2.2rem;
    --timer-text-size-tablet: 2.8rem;
    --timer-text-size-desktop: 3.6rem;
    --timer-text-size-large: 4.2rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, 'Liberation Mono', Menlo, Courier, monospace;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* Reset and Base Styles */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--gray-50) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: var(--space-2);
    background: var(--gray-900);
    color: white;
    padding: var(--space-2) var(--space-4);
    text-decoration: none;
    z-index: 1000;
    border-radius: var(--radius-md);
    font-weight: 500;
    transition: var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-2);
    box-shadow: var(--shadow-lg);
}

/* Header Styles */
#site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-4) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--transition-normal);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.site-branding {
    flex: 1;
    min-width: 200px;
}

.site-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-1);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.site-title a {
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transition: var(--transition-normal);
}

.site-title a:hover {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.site-description {
    color: var(--gray-600);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-3);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    color: var(--gray-700);
}

.menu-toggle:hover {
    background: var(--gray-100);
    color: var(--primary-600);
}

.menu-toggle:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

.primary-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
    align-items: center;
}

.primary-menu a {
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    position: relative;
}

.primary-menu a:hover {
    color: var(--primary-600);
    background: var(--primary-50);
    transform: translateY(-1px);
}

.primary-menu a:active {
    transform: translateY(0);
}

/* Language Switcher */
.language-switcher {
    margin-left: var(--space-6);
}

#language-select {
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: white;
    cursor: pointer;
    font-weight: 500;
    color: var(--gray-700);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

#language-select:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
}

#language-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px var(--primary-100);
}

/* Main Content */
.site-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-8) var(--space-6);
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--space-8);
    min-height: calc(100vh - 200px);
}

/* ===== ENHANCED TIMER DISPLAY ===== */
.timer-display-section {
    text-align: center;
    margin: var(--space-12) 0;
    padding: var(--space-16);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%),
        radial-gradient(circle at 30% 20%, rgba(59, 130, 246, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(245, 158, 11, 0.05) 0%, transparent 50%);
    border-radius: var(--radius-2xl);
    box-shadow:
        0 32px 64px rgba(0, 0, 0, 0.06),
        0 16px 32px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.02),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.timer-display-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg,
        var(--primary-400) 0%,
        var(--primary-500) 25%,
        var(--accent-500) 50%,
        var(--primary-500) 75%,
        var(--primary-600) 100%);
    border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
    opacity: 0.8;
}

.timer-display-section::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.8) 50%,
        transparent 100%);
}

.timer-container {
    display: inline-block;
    position: relative;
    padding: var(--space-8);
}

.timer-visual {
    margin-bottom: var(--space-10);
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.timer-circle {
    position: relative;
    display: inline-block;
    filter:
        drop-shadow(0 20px 40px rgba(59, 130, 246, 0.15))
        drop-shadow(0 8px 16px rgba(59, 130, 246, 0.1))
        drop-shadow(0 4px 8px rgba(0, 0, 0, 0.05));
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Add inner glow ring for depth */
.timer-circle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: calc(100% - 24px);
    height: calc(100% - 24px);
    border-radius: 50%;
    background: radial-gradient(
        circle at center,
        rgba(255, 255, 255, 0.8) 0%,
        rgba(255, 255, 255, 0.4) 30%,
        rgba(255, 255, 255, 0.1) 60%,
        transparent 100%
    );
    pointer-events: none;
    z-index: 1;
}

.timer-progress {
    position: relative;
}

.progress-ring {
    transform: rotate(-90deg);
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.1));
    transition: filter 0.6s ease;
    z-index: 0;
    width: var(--timer-circle-size-desktop);
    height: var(--timer-circle-size-desktop);
}

.progress-ring-circle {
    transition: stroke-dasharray var(--transition-slow);
    transform-origin: 50% 50%;
    stroke: var(--gray-200);
    stroke-width: var(--timer-stroke-width-desktop);
    opacity: 0.6;
}

.progress-ring-progress {
    stroke: url(#timerGradient);
    stroke-linecap: round;
    stroke-width: var(--timer-stroke-width-desktop);
    filter:
        drop-shadow(0 0 16px rgba(59, 130, 246, 0.4))
        drop-shadow(0 0 8px rgba(59, 130, 246, 0.2));
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Enhanced Timer Text */
.timer-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: var(--timer-text-size-desktop);
    font-weight: 900;
    color: var(--primary-800);
    letter-spacing: -0.03em;
    line-height: 0.9;
    user-select: none;
    z-index: 2;
    text-align: center;
    white-space: nowrap;
}

/* Enhanced glow backdrop for maximum readability */
.timer-text::before {
    content: '';
    position: absolute;
    inset: -24px;
    border-radius: 50%;
    background: radial-gradient(
        circle at center,
        rgba(255, 255, 255, 0.95) 0%,
        rgba(255, 255, 255, 0.8) 35%,
        rgba(255, 255, 255, 0.4) 60%,
        rgba(255, 255, 255, 0.1) 80%,
        transparent 100%
    );
    z-index: -1;
    filter: blur(3px);
    backdrop-filter: blur(2px);
}

/* High-contrast gradient digits with enhanced visibility */
.timer-text span {
    background: linear-gradient(
        135deg,
        var(--primary-900) 0%,
        var(--primary-800) 25%,
        var(--primary-700) 50%,
        var(--primary-800) 75%,
        var(--primary-900) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow:
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 4px 8px rgba(59, 130, 246, 0.1);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.1));
}

/* ===== ENHANCED TIMER CONTROLS ===== */
.timer-controls {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-10);
    padding: 0 var(--space-4);
}

/* Modern Button Base Styles */
.timer-btn {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
    color: var(--gray-700);
    border: 2px solid rgba(226, 232, 240, 0.8);
    padding: var(--space-5) var(--space-12);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius-2xl);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 160px;
    min-height: 60px;
    box-shadow:
        0 8px 24px rgba(0, 0, 0, 0.06),
        0 4px 12px rgba(0, 0, 0, 0.04),
        0 2px 6px rgba(0, 0, 0, 0.02),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-family: var(--font-sans);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    backdrop-filter: blur(8px);
}

.timer-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg,
        var(--primary-500) 0%,
        var(--primary-600) 50%,
        var(--primary-700) 100%);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
    transform: scale(0.8);
}

.timer-btn:hover {
    color: white;
    border-color: var(--primary-400);
    transform: translateY(-6px) scale(1.03);
    box-shadow:
        0 20px 40px rgba(59, 130, 246, 0.15),
        0 12px 24px rgba(59, 130, 246, 0.1),
        0 6px 12px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.timer-btn:hover::before {
    opacity: 1;
    transform: scale(1);
}

.timer-btn:active {
    transform: translateY(-2px) scale(1.01);
    transition: all 0.1s ease;
}

.timer-btn:disabled {
    background: var(--gray-100);
    color: var(--gray-400);
    border-color: var(--gray-200);
    cursor: not-allowed;
    transform: none;
    box-shadow: var(--shadow-sm);
}

.timer-btn:disabled::before {
    opacity: 0;
}

/* Start Button - Success Theme */
.start-btn {
    background: linear-gradient(135deg,
        var(--success-500) 0%,
        var(--success-600) 50%,
        #047857 100%);
    color: white;
    border-color: var(--success-400);
    box-shadow:
        0 8px 24px rgba(16, 185, 129, 0.25),
        0 4px 12px rgba(16, 185, 129, 0.15),
        0 2px 6px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.start-btn::before {
    background: linear-gradient(135deg,
        var(--success-600) 0%,
        #047857 50%,
        #065f46 100%);
}

.start-btn:hover {
    color: white;
    border-color: var(--success-300);
    box-shadow:
        0 20px 40px rgba(16, 185, 129, 0.3),
        0 12px 24px rgba(16, 185, 129, 0.2),
        0 6px 12px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* Pause Button - Warning Theme */
.pause-btn {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    color: white;
    border-color: var(--accent-500);
    box-shadow:
        0 4px 12px rgba(245, 158, 11, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.04);
}

.pause-btn::before {
    background: linear-gradient(135deg, var(--accent-600), #d97706);
}

.pause-btn:hover {
    color: white;
    border-color: var(--accent-600);
    box-shadow:
        0 12px 24px rgba(245, 158, 11, 0.4),
        0 6px 12px rgba(0, 0, 0, 0.1);
}

/* Reset Button - Neutral Theme */
.reset-btn {
    background: white;
    color: var(--gray-600);
    border-color: var(--gray-300);
}

.reset-btn::before {
    background: linear-gradient(135deg, var(--gray-600), var(--gray-700));
}

.reset-btn:hover {
    color: white;
    border-color: var(--gray-500);
    box-shadow:
        0 12px 24px rgba(107, 114, 128, 0.2),
        0 6px 12px rgba(0, 0, 0, 0.1);
}

/* Custom Timer Form */
.custom-timer-section {
    margin: var(--space-12) 0;
}

.custom-timer-form {
    background: white;
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    margin: var(--space-8) 0;
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.custom-timer-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-500), var(--primary-500));
}

.time-inputs {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
    margin-bottom: var(--space-8);
    flex-wrap: wrap;
}

.time-input-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.time-input-group input {
    width: 90px;
    height: 90px;
    padding: var(--space-4);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    border: 3px solid var(--gray-200);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-3);
    background: var(--gray-50);
    transition: var(--transition-normal);
    color: var(--primary-700);
}

.time-input-group input:focus {
    outline: none;
    border-color: var(--primary-500);
    background: white;
    box-shadow: 0 0 0 4px var(--primary-100);
    transform: scale(1.05);
}

.time-input-group input:hover {
    border-color: var(--primary-300);
    background: white;
}

.time-input-group label {
    font-size: 0.95rem;
    color: var(--gray-600);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.custom-timer-btn {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    color: white;
    border: none;
    padding: var(--space-5) var(--space-10);
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.custom-timer-btn:hover {
    background: linear-gradient(135deg, var(--accent-600), var(--accent-600));
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

/* ===== EXPLORE FEATURES SECTION ===== */
.feature-nav {
    margin: var(--space-16) 0;
    padding: var(--space-12) 0;
    background: linear-gradient(135deg, var(--gray-50) 0%, white 50%, var(--primary-50) 100%);
    border-radius: var(--radius-2xl);
    position: relative;
}

.feature-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-200), transparent);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--space-4);
    color: var(--gray-900);
    text-align: center;
    position: relative;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-900));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: var(--space-10);
    font-weight: 500;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-8);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.feature-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-10) var(--space-8);
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    text-align: center;
    backdrop-filter: blur(10px);
    min-height: 280px;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--primary-50), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    border-color: var(--primary-300);
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
}

.feature-card:hover::before {
    opacity: 1;
}

/* Modern Icon Container */
.feature-icon-container {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

.feature-card:hover .feature-icon-container {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 35px rgba(59, 130, 246, 0.3);
}

.feature-icon {
    width: 40px;
    height: 40px;
    transition: all 0.4s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

/* SVG Icon Styles */
.feature-icon svg {
    width: 100%;
    height: 100%;
    fill: var(--primary-600);
    transition: fill 0.4s ease;
}

.feature-card:hover .feature-icon svg {
    fill: white;
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: var(--space-4);
    color: var(--gray-900);
    position: relative;
    z-index: 1;
}

.feature-desc {
    color: var(--gray-600);
    font-size: 1rem;
    margin-bottom: 0;
    line-height: 1.7;
    position: relative;
    z-index: 1;
    text-align: center;
}



/* Feature Card Specific Themes */
.feature-card.basic-timer .feature-icon-container {
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
}

.feature-card.basic-timer:hover .feature-icon-container {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
}

.feature-card.meeting-mode .feature-icon-container {
    background: linear-gradient(135deg, #dbeafe, #bfdbfe);
}

.feature-card.meeting-mode:hover .feature-icon-container {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}


.feature-card.floating-window .feature-icon-container {
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
}

.feature-card.floating-window:hover .feature-icon-container {
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

/* ===== ENHANCED ANIMATIONS ===== */
@keyframes featureCardFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-5px);
    }
}

@keyframes iconPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes buttonShine {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Staggered animation for feature cards */
.feature-card:nth-child(1) {
    animation-delay: 0.1s;
}

.feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.3s;
}


/* Subtle floating animation - disabled to avoid conflicts */
/* .feature-card {
    animation: featureCardFloat 6s ease-in-out infinite;
}

.feature-card:nth-child(even) {
    animation-direction: reverse;
} */

/* Icon pulse on hover */
.feature-card:hover .feature-icon {
    animation: iconPulse 1s ease-in-out infinite;
}

/* Enhanced focus states */
.feature-card:focus-within {
    outline: 3px solid var(--primary-300);
    outline-offset: 4px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Timer Grid */
.preset-timers {
    margin: var(--space-12) 0;
    padding: var(--space-8);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.timer-grid {
    display: grid;
    gap: var(--space-3);
    margin: var(--space-8) 0;
}

.timer-row {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-3);
}

.timer-item {
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 2px solid transparent;
    transition: var(--transition-normal);
}

.timer-item:hover {
    border-color: var(--primary-200);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.timer-link {
    display: block;
    padding: var(--space-4) var(--space-3);
    text-align: center;
    color: var(--primary-600);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-normal);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.timer-link:hover {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
}

/* Sidebar */
#secondary {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    height: fit-content;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-200);
    position: sticky;
    top: calc(var(--space-16) + 80px);
}

.widget {
    margin-bottom: var(--space-8);
}

.widget:last-child {
    margin-bottom: 0;
}

.widget-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: var(--space-5);
    color: var(--gray-900);
    position: relative;
    padding-bottom: var(--space-3);
}

.widget-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    border-radius: var(--radius-full);
}

/* Footer */
.site-footer {
    background: linear-gradient(135deg, var(--gray-900), var(--gray-800));
    color: white;
    margin-top: var(--space-16);
    padding: var(--space-12) 0 var(--space-8);
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.footer-widgets {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-10);
}

.footer-widget h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-5);
    color: white;
    position: relative;
    padding-bottom: var(--space-3);
}

.footer-widget h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent-500);
    border-radius: var(--radius-full);
}

.footer-links {
    list-style: none;
    display: grid;
    gap: var(--space-3);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    padding: var(--space-2) 0;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--accent-400);
    transform: translateX(4px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--gray-700);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.copyright {
    color: var(--gray-400);
    font-size: 0.9rem;
}

.to-top {
    color: var(--accent-400);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.to-top:hover {
    background: var(--accent-500);
    color: white;
    transform: translateY(-2px);
}

/* ===== RESPONSIVE DESIGN ===== */

/* Large Desktop (1400px+) */
@media (min-width: 1400px) {
    .timer-text {
        font-size: var(--timer-text-size-large);
    }

    .progress-ring {
        width: var(--timer-circle-size-large);
        height: var(--timer-circle-size-large);
    }

    .progress-ring-circle,
    .progress-ring-progress {
        stroke-width: var(--timer-stroke-width-large);
    }

    .timer-btn {
        min-width: 180px;
        min-height: 64px;
        font-size: 1.3rem;
        padding: var(--space-6) var(--space-12);
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
        justify-content: center;
    }

    .timer-row {
        grid-template-columns: repeat(8, 1fr);
    }

    .timer-display-section {
        padding: var(--space-16);
        margin: var(--space-16) 0;
    }
}

/* Desktop (1024px - 1399px) */
@media (max-width: 1399px) and (min-width: 1024px) {
    .site-main {
        max-width: 1200px;
        padding: var(--space-6) var(--space-5);
    }

    .timer-text {
        font-size: var(--timer-text-size-desktop);
    }

    .progress-ring {
        width: var(--timer-circle-size-desktop);
        height: var(--timer-circle-size-desktop);
    }

    .progress-ring-circle,
    .progress-ring-progress {
        stroke-width: var(--timer-stroke-width-desktop);
    }

    .timer-btn {
        min-width: 160px;
        min-height: 56px;
    }
}

/* Tablet (768px - 1023px) */
@media (max-width: 1023px) and (min-width: 768px) {
    .site-main {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding: var(--space-6) var(--space-4);
    }

    .header-inner {
        padding: 0 var(--space-4);
    }

    .timer-display-section {
        padding: var(--space-10);
        margin: var(--space-10) 0;
    }

    .timer-text {
        font-size: var(--timer-text-size-tablet);
    }

    .progress-ring {
        width: var(--timer-circle-size-tablet);
        height: var(--timer-circle-size-tablet);
    }

    .progress-ring-circle,
    .progress-ring-progress {
        stroke-width: var(--timer-stroke-width-tablet);
    }

    .timer-btn {
        min-width: 140px;
        min-height: 52px;
        font-size: 1.1rem;
        padding: var(--space-4) var(--space-8);
    }

    .timer-controls {
        gap: var(--space-4);
    }

    .timer-row {
        grid-template-columns: repeat(4, 1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-5);
    }

    .time-inputs {
        gap: var(--space-4);
    }
}

/* Mobile Large (481px - 767px) */
@media (max-width: 767px) {
    .header-inner {
        flex-direction: column;
        gap: var(--space-4);
        padding: 0 var(--space-4);
    }

    .site-branding {
        text-align: center;
        width: 100%;
    }

    .menu-toggle {
        display: block;
        position: absolute;
        top: var(--space-4);
        right: var(--space-4);
    }

    .primary-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: var(--space-2);
        background: white;
        padding: var(--space-4);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-lg);
        margin-top: var(--space-4);
    }

    .primary-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }

    .language-switcher {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }

    #language-select {
        width: 200px;
    }

    .site-main {
        padding: var(--space-4) var(--space-3);
    }

    .timer-display-section {
        padding: var(--space-6);
        margin: var(--space-6) 0;
    }

    .timer-text {
        font-size: var(--timer-text-size-mobile);
    }

    .progress-ring {
        width: var(--timer-circle-size-mobile);
        height: var(--timer-circle-size-mobile);
    }

    .progress-ring-circle,
    .progress-ring-progress {
        stroke-width: var(--timer-stroke-width-mobile);
    }

    .timer-btn {
        min-width: 120px;
        min-height: 48px;
        font-size: 1rem;
        padding: var(--space-3) var(--space-6);
    }

    .timer-controls {
        gap: var(--space-3);
        flex-direction: column;
        align-items: center;
    }

    .timer-btn {
        width: 100%;
        max-width: 280px;
    }

    .timer-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-nav {
        padding: var(--space-8) 0;
        margin: var(--space-8) 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .feature-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        padding: 0 var(--space-4);
    }

    .feature-card {
        padding: var(--space-8);
    }

    .feature-icon-container {
        width: 70px;
        height: 70px;
        margin-bottom: var(--space-5);
    }

    .feature-icon {
        width: 35px;
        height: 35px;
    }

    .feature-title {
        font-size: 1.2rem;
    }



    .time-inputs {
        flex-direction: column;
        align-items: center;
        gap: var(--space-4);
    }

    .timer-controls {
        flex-direction: column;
        align-items: center;
        gap: var(--space-3);
    }

    .timer-btn {
        width: 100%;
        max-width: 280px;
    }

    /* Audio Controls Responsive */
    .audio-controls-panel {
        padding: var(--space-6);
        margin: var(--space-6) 0;
    }

    .ringtone-actions {
        flex-direction: column;
        gap: var(--space-3);
    }

    .ringtone-preview-btn, .ringtone-test-btn {
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }

    .footer-widgets {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

/* Mobile Small (320px - 480px) */
@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .site-main {
        padding: var(--space-3) var(--space-2);
    }

    .timer-row {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-2);
    }

    .timer-display-section {
        padding: var(--space-4);
        margin: var(--space-4) 0;
    }

    .timer-text {
        font-size: 1.8rem;
    }

    .progress-ring {
        width: 160px;
        height: 160px;
    }

    .progress-ring-circle,
    .progress-ring-progress {
        stroke-width: 6px;
    }

    .timer-container {
        padding: var(--space-4);
    }

    .timer-btn {
        padding: var(--space-4) var(--space-6);
        font-size: 0.95rem;
        min-width: 110px;
        min-height: 48px;
    }

    /* Small Screen Audio Controls */
    .audio-controls-panel {
        padding: var(--space-4);
        margin: var(--space-4) 0;
    }

    .audio-controls-header h3 {
        font-size: 1rem;
    }

    .volume-control {
        flex-direction: column;
        gap: var(--space-2);
        align-items: stretch;
    }

    .volume-slider {
        width: 100%;
    }

    .ringtone-preview-btn, .ringtone-test-btn {
        padding: var(--space-3) var(--space-4);
        font-size: 0.85rem;
        min-height: 40px;
    }

    .timer-controls {
        gap: var(--space-2);
    }

    .time-input-group input {
        width: 70px;
        height: 70px;
        font-size: 1.2rem;
    }

    .feature-nav {
        padding: var(--space-6) 0;
        margin: var(--space-6) 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
        margin-bottom: var(--space-8);
    }

    .feature-grid {
        padding: 0 var(--space-3);
        gap: var(--space-5);
    }

    .feature-card {
        padding: var(--space-6);
        transform: none !important; /* Disable hover transforms on small screens */
    }

    .feature-card:hover {
        transform: none !important;
    }

    .feature-icon-container {
        width: 60px;
        height: 60px;
        margin-bottom: var(--space-4);
    }

    .feature-icon {
        width: 30px;
        height: 30px;
    }

    .feature-title {
        font-size: 1.1rem;
    }

    .feature-desc {
        font-size: 0.9rem;
        margin-bottom: 0;
    }



    .custom-timer-form {
        padding: var(--space-6);
    }
}

/* ===== ANIMATIONS & KEYFRAMES ===== */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

@keyframes celebration {
    0%, 100% {
        transform: scale(1) rotate(0deg);
    }
    25% {
        transform: scale(1.1) rotate(-5deg);
    }
    75% {
        transform: scale(1.1) rotate(5deg);
    }
}

/* Page Load Animation */
.site-main {
    animation: fadeInUp 0.6s ease;
}

/* ===== ENHANCED AUDIO CONTROLS ===== */
.audio-controls-section {
    margin: var(--space-10) 0;
}

.audio-controls-panel {
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    margin: var(--space-8) 0;
    border: 1px solid rgba(226, 232, 240, 0.6);
    box-shadow:
        0 16px 32px rgba(0, 0, 0, 0.04),
        0 8px 16px rgba(0, 0, 0, 0.03),
        0 4px 8px rgba(0, 0, 0, 0.02),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(8px);
    position: relative;
    overflow: hidden;
}

.audio-controls-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg,
        var(--primary-400) 0%,
        var(--accent-500) 50%,
        var(--primary-600) 100%);
    opacity: 0.7;
}

.audio-controls-panel:hover {
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow:
        0 24px 48px rgba(0, 0, 0, 0.06),
        0 12px 24px rgba(59, 130, 246, 0.04),
        0 6px 12px rgba(0, 0, 0, 0.03),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

.audio-controls-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-5);
}

.audio-controls-header h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
}

.audio-controls-toggle {
    background: var(--gray-100);
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    color: var(--gray-600);
}

.audio-controls-toggle:hover {
    background: var(--primary-100);
    color: var(--primary-600);
}

.audio-controls-content {
    display: block;
}

.audio-control-group {
    margin-bottom: var(--space-5);
}

.audio-control-label {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
    font-weight: 500;
    color: var(--gray-700);
}

.mute-toggle {
    margin: 0;
    accent-color: var(--primary-500);
}

/* Enhanced Volume Control */
.volume-control {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin: var(--space-4) 0;
}

.volume-slider {
    flex: 1;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--gray-200);
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
    -webkit-appearance: none;
    appearance: none;
    accent-color: var(--primary-500);
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    cursor: pointer;
    box-shadow:
        0 4px 8px rgba(59, 130, 246, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.volume-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow:
        0 6px 12px rgba(59, 130, 246, 0.4),
        0 3px 6px rgba(0, 0, 0, 0.15);
}

/* Enhanced Ringtone Selector */
.ringtone-selector {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.ringtone-select {
    width: 100%;
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-700);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(4px);
}

.ringtone-select:focus {
    outline: none;
    border-color: var(--primary-400);
    box-shadow:
        0 0 0 4px rgba(59, 130, 246, 0.1),
        0 4px 12px rgba(59, 130, 246, 0.15);
    transform: translateY(-1px);
}

/* Enhanced Action Buttons */
.ringtone-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.ringtone-preview-btn, .ringtone-test-btn {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: white;
    border: none;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 4px 12px rgba(59, 130, 246, 0.2),
        0 2px 6px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
    justify-content: center;
    min-height: 44px;
}

.ringtone-test-btn {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    box-shadow:
        0 4px 12px rgba(245, 158, 11, 0.2),
        0 2px 6px rgba(0, 0, 0, 0.05);
}

.ringtone-preview-btn:hover, .ringtone-test-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow:
        0 8px 20px rgba(59, 130, 246, 0.25),
        0 4px 12px rgba(0, 0, 0, 0.1);
}

.ringtone-test-btn:hover {
    box-shadow:
        0 8px 20px rgba(245, 158, 11, 0.25),
        0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Ringtone Info Display */
.ringtone-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-3);
    padding: var(--space-3);
    background: rgba(59, 130, 246, 0.05);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* ===== MEETING MODE STYLES ===== */
.meeting-mode-page {
    --mode-primary: var(--primary-600);
    --mode-secondary: var(--primary-700);
    --mode-bg: var(--primary-50);
}

.meeting-mode-page .timer-circle {
    filter: drop-shadow(0 8px 16px rgba(37, 99, 235, 0.2));
}

.meeting-mode-page .progress-ring-progress {
    stroke: url(#meetingGradient);
}

.meeting-mode-page .timer-text {
    color: var(--primary-700);
}

.meeting-start-btn, .meeting-pause-btn, .meeting-reset-btn, .meeting-floating-btn {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
}

.meeting-start-btn:hover, .meeting-pause-btn:hover, .meeting-reset-btn:hover, .meeting-floating-btn:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
}

.remote-control-section {
    background: linear-gradient(135deg, var(--primary-50), white);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    margin: var(--space-8) 0;
    border: 2px solid var(--primary-200);
    box-shadow: var(--shadow-xl);
    position: relative;
}

.remote-control-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-600));
}

.remote-control-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-8);
    align-items: center;
}

.qr-code-container {
    text-align: center;
    padding: var(--space-4);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.qr-code {
    max-width: 200px;
    height: auto;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
}

.remote-control-info ul {
    list-style: none;
    padding: 0;
    display: grid;
    gap: var(--space-3);
}

.remote-control-info li {
    padding: var(--space-3);
    position: relative;
    padding-left: var(--space-8);
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-fast);
}

.remote-control-info li:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.remote-control-info li:before {
    content: "✓";
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--success-500);
    font-weight: bold;
    font-size: 1.1rem;
}

.session-info {
    margin-top: var(--space-5);
    padding: var(--space-4);
    background: rgba(59, 130, 246, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-200);
    font-family: var(--font-mono);
    font-weight: 500;
}

/* ===== WORKOUT MODE STYLES ===== */
.workout-mode-page {
    --mode-primary: #ff6b35;
    --mode-secondary: #e55a2b;
    --mode-bg: #fff5f0;
}

.workout-mode-page .timer-circle {
    filter: drop-shadow(0 8px 16px rgba(255, 107, 53, 0.2));
}

.workout-mode-page .progress-ring-progress {
    stroke: url(#workoutGradient);
}

.workout-mode-page .timer-text {
    color: #ff6b35;
}

.workout-start-btn, .workout-pause-btn, .workout-reset-btn, .workout-skip-btn {
    background: linear-gradient(135deg, #ff6b35, #e55a2b);
}

.workout-start-btn:hover, .workout-pause-btn:hover, .workout-reset-btn:hover, .workout-skip-btn:hover {
    background: linear-gradient(135deg, #e55a2b, #d14d26);
}

.workout-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--space-6);
    margin: var(--space-8) 0;
}

.workout-option-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    text-align: center;
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

/* ===== MEETING MODE — ELEVATED MINIMAL UI ===== */
/* Layout simplification for meeting page */
body:has(.meeting-mode-page) .site-main {
    grid-template-columns: 1fr;
    max-width: 1100px;
}

body:has(.meeting-mode-page) #secondary {
    display: none;
}

/* Header refinement */
.meeting-mode-page .page-header {
    background:
        linear-gradient(135deg, rgba(255,255,255,0.92) 0%, rgba(248,250,252,0.9) 100%),
        radial-gradient(1200px 400px at 10% -10%, rgba(59,130,246,0.08), transparent),
        radial-gradient(1000px 360px at 90% 110%, rgba(37,99,235,0.06), transparent);
    border: 1px solid rgba(226,232,240,0.7);
    border-radius: var(--radius-2xl);
    padding: var(--space-10) var(--space-8);
    box-shadow: 0 24px 48px rgba(0,0,0,0.06), 0 8px 16px rgba(0,0,0,0.04);
}

.meeting-mode-page .page-title {
    font-size: clamp(2rem, 2.6vw, 3rem);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary-700), var(--primary-900));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.meeting-mode-page .page-description {
    color: var(--gray-600);
    max-width: 740px;
    margin: var(--space-3) auto 0 auto;
    font-weight: 500;
}

/* Quick Start buttons */
.quick-start-section { margin-top: var(--space-8); }
.quick-timer-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
}
.quick-timer-btn {
    background: linear-gradient(135deg, rgba(255,255,255,0.95), rgba(248,250,252,0.95));
    border: 1px solid var(--gray-200);
    color: var(--primary-700);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}
.quick-timer-btn:hover {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: #fff;
    border-color: var(--primary-400);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Custom meeting timer form */
.meeting-timer-form {
    background: white;
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    margin: var(--space-8) 0;
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--gray-200);
}
.start-meeting-timer-btn {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: #fff;
    border: none;
    padding: var(--space-5) var(--space-10);
    font-size: 1.1rem;
    font-weight: 800;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 24px rgba(16,185,129,0.25);
    letter-spacing: 0.04em;
}
.start-meeting-timer-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 16px 32px rgba(16,185,129,0.3);
}

/* Meeting features polishing */
.meeting-features .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-6);
}
.meeting-features .feature-card {
    border-radius: var(--radius-2xl);
    border: 1px solid var(--gray-200);
    background: linear-gradient(180deg, rgba(255,255,255,0.9), #fff);
    box-shadow: 0 8px 24px rgba(0,0,0,0.06);
}
.meeting-features .feature-icon {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
    color: var(--primary-700);
    width: 64px; height: 64px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: var(--space-4);
    box-shadow: 0 6px 16px rgba(59,130,246,0.2);
}

/* Steps styling */
.meeting-instructions .instructions-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
    margin-top: var(--space-5);
}
.instruction-step {
    display: flex; align-items: flex-start; gap: var(--space-4);
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
}
.step-number {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #fff; font-weight: 800; display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 16px rgba(59,130,246,0.25);
}
.step-content h4 { margin: 0 0 var(--space-2) 0; }
.step-content p { margin: 0; color: var(--gray-600); }

/* Dynamic content */
.meeting-mode-page .dynamic-content .content-text {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
}

.meeting-mode-page .ad-section { margin-top: var(--space-10); }


/* ===== MEETING TIMER PAGE — MODERN CIRCLE & BUTTONS ===== */
.meeting-timer-page .timer-circle.meeting-circle {
    filter: drop-shadow(0 8px 16px rgba(0,0,0,0.08));
}
.meeting-timer-page .progress-ring {
    width: 320px; height: 320px; transform: rotate(-90deg);
}
.meeting-timer-page .progress-ring-circle { stroke: var(--gray-200); opacity: 0.8; }
.meeting-timer-page .progress-ring-progress {
    stroke: url(#meetingGradient);
    stroke-linecap: round;
}
.meeting-timer-page .meeting-timer-text #timer-display { font-weight: 900; letter-spacing: -0.02em; }
.meeting-timer-controls { display: flex; gap: var(--space-4); justify-content: center; margin-top: var(--space-6); }
.meeting-timer-controls .timer-btn { min-width: 140px; }

/* Remove odd symbols below buttons (if any baseline artifacts) */
.meeting-timer-controls .timer-btn::after { content: '' !important; }

/* Hide timer debug/status text if it shows odd characters */
.timer-status { margin-top: var(--space-3); color: var(--gray-500); font-weight: 600; }

/* 强制移除按钮伪元素可能出现的加号/叉号等异常符号（兼容性兜底） */
.timer-btn::before, .timer-btn::after,
.start-btn::before, .start-btn::after,
.pause-btn::before, .pause-btn::after,
.reset-btn::before, .reset-btn::after,
.meeting-start-btn::before, .meeting-start-btn::after,
.meeting-pause-btn::before, .meeting-pause-btn::after,
.meeting-reset-btn::before, .meeting-reset-btn::after,
.meeting-floating-btn::before, .meeting-floating-btn::after {
    content: '' !important;
    display: none !important;
}

/* 避免计时文本出现叠影或重复层叠的兜底处理 */
.timer-text, .meeting-timer-text {
    text-shadow: none !important;
}



.workout-option-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #ff6b35, #f59e0b);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.workout-option-card:hover {
    border-color: #ff6b35;
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
}

.workout-option-card:hover::before {
    transform: scaleX(1);
}

.workout-option-card.primary {
    border-color: #ff6b35;
    background: linear-gradient(135deg, #ff6b35 0%, #f59e0b 100%);
    color: white;
    box-shadow: var(--shadow-xl);
}

.workout-option-card.primary::before {
    transform: scaleX(1);
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
}

.option-icon {
    font-size: 3.5rem;
    margin-bottom: var(--space-5);
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.music-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
}

.music-card {
    background: white;
    border: 1px solid #dcd7ca;
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.music-info h4 {
    margin: 0 0 0.25rem 0;
    color: #000000;
}

.music-type {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.music-duration {
    color: #999;
    font-size: 0.8rem;
    margin: 0;
}

.music-preview-btn {
    background: #ff6b35;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
}

.music-preview-btn:hover {
    background: #e55a2b;
}

/* 锻炼进度样式 */
.workout-progress-section {
    background: #fff5f0;
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
}

.workout-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.workout-progress-info {
    font-size: 1.2rem;
    font-weight: bold;
    color: #ff6b35;
}

.progress-bar-container {
    width: 100%;
    height: 20px;
    background: #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff6b35 0%, #f7931e 100%);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    font-weight: bold;
    color: #ff6b35;
}

/* 锻炼时段时间线 */
.segments-timeline {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.segment-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.segment-item.active {
    border-color: #ff6b35;
    background: #fff5f0;
}

.segment-item.completed {
    border-color: #28a745;
    background: #f0fff4;
}

.segment-indicator {
    flex-shrink: 0;
}

.segment-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #666;
}

.segment-item.active .segment-number {
    background: #ff6b35;
    color: white;
}

.segment-item.completed .segment-number {
    background: #28a745;
    color: white;
}

.segment-content {
    flex: 1;
}

.segment-name {
    margin: 0 0 0.5rem 0;
    color: #000000;
}

.segment-details {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #666;
}

/* 锻炼统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.stat-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #dcd7ca;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: #ff6b35;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.95rem;
    font-weight: 500;
}

/* ===== MUSIC CONTROLS ===== */
.music-controls-panel {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.music-controls-panel:hover {
    border-color: var(--primary-200);
    box-shadow: var(--shadow-lg);
}

.current-music-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.music-title {
    font-weight: 700;
    color: var(--gray-900);
    font-size: 1.1rem;
}

.music-controls {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.music-btn {
    background: linear-gradient(135deg, #ff6b35, #e55a2b);
    color: white;
    border: none;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.music-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #e55a2b, #d14d26);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.music-btn:disabled {
    background: var(--gray-400);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.volume-slider {
    width: 120px;
    accent-color: #ff6b35;
}

/* ===== ADDITIONAL COMPONENTS ===== */

/* Featured Timer on Homepage */
.featured-timer {
    background: linear-gradient(135deg, var(--primary-50), white);
    padding: var(--space-10);
    border-radius: var(--radius-2xl);
    margin: var(--space-8) 0;
    text-align: center;
    border: 2px solid var(--primary-200);
    box-shadow: var(--shadow-xl);
}

.timer-start-btn {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: white;
    border: none;
    padding: var(--space-5) var(--space-10);
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
    margin-top: var(--space-6);
}

.timer-start-btn:hover {
    background: linear-gradient(135deg, var(--success-600), var(--success-600));
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

/* Page Headers */
.page-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--primary-600), var(--primary-800));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.breadcrumb {
    margin-bottom: var(--space-4);
    font-size: 0.9rem;
    color: var(--gray-600);
}

.breadcrumb a {
    color: var(--primary-600);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumb a:hover {
    color: var(--primary-700);
    text-decoration: underline;
}

.separator {
    margin: 0 var(--space-2);
    color: var(--gray-400);
}

/* Home Intro */
.home-intro {
    text-align: center;
    margin: var(--space-10) 0;
    padding: var(--space-8);
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
}

.site-tagline {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-700);
    margin-bottom: var(--space-4);
}

.main-description, .usage-description, .wake-up-description {
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

/* Timer Description */
.timer-description, .timer-intro, .timer-usage {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    margin: var(--space-8) 0;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

.timer-note {
    background: var(--accent-50);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    margin: var(--space-6) 0;
    border-left: 4px solid var(--accent-500);
}

/* Flash Animation */
@keyframes flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.flash {
    animation: flash 0.5s ease-in-out;
}

/* Celebration Animation */
.celebration {
    animation: celebration 0.8s ease-in-out;
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 1.5s infinite;
}

/* ===== SVG GRADIENTS & UTILITIES ===== */

/* SVG Gradient Definitions (to be added to HTML) */
.svg-gradients {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-primary { color: var(--primary-600); }
.text-accent { color: var(--accent-500); }
.text-success { color: var(--success-500); }
.text-error { color: var(--error-500); }

.bg-primary { background: var(--primary-500); }
.bg-accent { background: var(--accent-500); }
.bg-success { background: var(--success-500); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

/* Focus States */
.focus-ring:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--primary-100);
    border-color: var(--primary-500);
}

/* Hover Effects */
.hover-lift:hover {
    transform: translateY(-2px);
    transition: var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.02);
    transition: var(--transition-normal);
}

/* ===== ENHANCED MOBILE EXPERIENCE ===== */

/* ===== ENHANCED TOUCH EXPERIENCE ===== */
@media (max-width: 767px) {
    .timer-btn, .custom-timer-btn {
        min-height: 56px;
        min-width: 56px;
        touch-action: manipulation;
        -webkit-tap-highlight-color: transparent;
        user-select: none;
    }

    .timer-btn {
        font-size: 1.1rem;
        padding: var(--space-4) var(--space-8);
        border-radius: var(--radius-2xl);
    }

    .timer-link {
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
        touch-action: manipulation;
    }

    /* Enhanced touch feedback */
    .timer-btn:active {
        transform: scale(0.98);
        transition: transform 0.1s ease;
    }

    /* Larger touch targets for better accessibility */
    .timer-controls {
        gap: var(--space-4);
        padding: var(--space-2);
    }
}

    /* Improved mobile navigation */
    .primary-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-xl);
        border: 1px solid var(--gray-200);
        z-index: 50;
        opacity: 0;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        display: none;
    }

    .primary-menu.menu-open {
        opacity: 1;
        transform: translateY(0);
    }

    .primary-menu a {
        padding: var(--space-4);
        border-bottom: 1px solid var(--gray-100);
        transition: var(--transition-fast);
    }

    .primary-menu a:hover {
        background: var(--primary-50);
        padding-left: var(--space-6);
    }

    .primary-menu a:last-child {
        border-bottom: none;
    }

    .remote-control-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-6);
    }

    .workout-options {
        grid-template-columns: 1fr;
    }
}

/* ===== DARK MODE SUPPORT ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #0f172a;
        --gray-100: #1e293b;
        --gray-200: #334155;
        --gray-300: #475569;
        --gray-400: #64748b;
        --gray-500: #94a3b8;
        --gray-600: #cbd5e1;
        --gray-700: #e2e8f0;
        --gray-800: #f1f5f9;
        --gray-900: #f8fafc;
    }

    body {
        background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    }

    #site-header {
        background: rgba(15, 23, 42, 0.95);
        border-bottom-color: var(--gray-700);
    }
}

/* ===== PRINT STYLES ===== */
@media print {
    .site-header,
    .site-footer,
    #secondary,
    .audio-controls-section,
    .timer-controls {
        display: none;
    }

    .site-main {
        grid-template-columns: 1fr;
        max-width: none;
        padding: 0;
    }

    .timer-display-section {
        box-shadow: none;
        border: 2px solid var(--gray-300);
    }
}

/* ===== ACCESSIBILITY IMPROVEMENTS ===== */

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --primary-500: #0000ff;
        --accent-500: #ff8c00;
        --gray-600: #000000;
        --gray-300: #666666;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .feature-card {
        animation: none !important;
    }

    .feature-card:hover {
        transform: translateY(-4px) !important;
    }

    .feature-icon-container {
        animation: none !important;
    }

    .feature-card:hover .feature-icon-container {
        transform: scale(1.05) !important;
    }
}

/* Focus visible for keyboard navigation */
.timer-btn:focus-visible,
.custom-timer-btn:focus-visible {
    outline: 3px solid var(--accent-500);
    outline-offset: 2px;
}

/* ===== RIPPLE EFFECT ===== */
.timer-btn, .custom-timer-btn, .music-btn, .ringtone-preview-btn {
    position: relative;
    overflow: hidden;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s linear;
    pointer-events: none;
    z-index: 1;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ===== ENHANCED BUTTON STATES ===== */
.timer-btn.loading {
    pointer-events: none;
}

.timer-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.6s ease;
}

/* ===== KEYBOARD NAVIGATION ===== */
.keyboard-navigation .timer-btn:focus,
.keyboard-navigation .quick-btn:focus,
.keyboard-navigation .custom-timer-btn:focus {
    box-shadow: 0 0 0 3px var(--accent-500);
}

/* ===== ENHANCED TIMER STATES ===== */

/* Running State */
.timer-running .timer-circle {
    animation: timerPulse 2s ease-in-out infinite;
}

.timer-running .progress-ring {
    filter: drop-shadow(0 6px 12px rgba(59, 130, 246, 0.3));
}

.timer-running .timer-text {
    animation: textGlow 3s ease-in-out infinite;
}

/* Warning State (last 20% of time) */
.timer-warning .timer-circle {
    animation: warningPulse 1s ease-in-out infinite;
    filter: drop-shadow(0 0 24px rgba(239, 68, 68, 0.6));
}

.timer-warning .progress-ring-progress {
    stroke: url(#warningGradient);
    animation: warningGlow 1s ease-in-out infinite;
}

.timer-warning .timer-text {
    color: var(--error-500) !important;
    animation: warningFlash 1s ease-in-out infinite;
    text-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
}

/* Finished State */
.timer-finished .timer-circle {
    animation: celebration 1.2s ease-in-out;
    filter: drop-shadow(0 0 32px rgba(16, 185, 129, 0.8));
}

.timer-finished .progress-ring-progress {
    stroke: url(#successGradient);
    animation: successGlow 0.8s ease-in-out;
}

.timer-finished .timer-text {
    color: var(--success-500) !important;
    animation: successPulse 1s ease-in-out infinite;
    text-shadow: 0 0 12px rgba(16, 185, 129, 0.6);
}

/* ===== ENHANCED PROGRESS RING ===== */
.progress-ring-progress {
    transition: stroke-dashoffset 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Create inner padding ring for better spacing */
.timer-circle::after {
    content: '';
    position: absolute;
    inset: 10px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 6px rgba(255,255,255,0.6);
    pointer-events: none;
}

/* ===== TIMER ANIMATIONS ===== */
@keyframes timerPulse {
    0%, 100% {
        transform: scale(1);
        filter: drop-shadow(0 12px 24px rgba(59, 130, 246, 0.2));
    }
    50% {
        transform: scale(1.02);
        filter: drop-shadow(0 16px 32px rgba(59, 130, 246, 0.3));
    }
}

@keyframes textGlow {
    0%, 100% {
        text-shadow:
            0 2px 4px rgba(0, 0, 0, 0.1),
            0 4px 8px rgba(59, 130, 246, 0.1);
    }
    50% {
        text-shadow:
            0 2px 4px rgba(0, 0, 0, 0.1),
            0 4px 8px rgba(59, 130, 246, 0.3),
            0 0 16px rgba(59, 130, 246, 0.2);
    }
}

@keyframes warningPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes warningGlow {
    0%, 100% {
        filter: drop-shadow(0 0 12px rgba(239, 68, 68, 0.4));
    }
    50% {
        filter: drop-shadow(0 0 20px rgba(239, 68, 68, 0.8));
    }
}

@keyframes warningFlash {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes successGlow {
    0% {
        filter: drop-shadow(0 0 8px rgba(16, 185, 129, 0.3));
    }
    100% {
        filter: drop-shadow(0 0 24px rgba(16, 185, 129, 0.8));
    }
}

@keyframes successPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* ===== MODERN SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}

/* ===== SELECTION STYLES ===== */
::selection {
    background: var(--primary-200);
    color: var(--primary-800);
}

::-moz-selection {
    background: var(--primary-200);
    color: var(--primary-800);
}

/* ===== MISSING STYLES FROM ORIGINAL ===== */

/* Music Grid and Controls */
.music-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.music-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.music-card:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.music-info h4 {
    margin: 0 0 var(--space-1) 0;
    color: var(--gray-900);
    font-weight: 600;
}

.music-type {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin: 0;
}

.music-duration {
    color: var(--gray-500);
    font-size: 0.8rem;
    margin: 0;
}

.music-preview-btn {
    background: linear-gradient(135deg, var(--accent-500), var(--accent-600));
    color: white;
    border: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition-normal);
}

.music-preview-btn:hover {
    background: linear-gradient(135deg, var(--accent-600), var(--accent-600));
    transform: translateY(-1px);
}

/* Workout Progress */
.workout-progress-section {
    background: linear-gradient(135deg, #fff5f0, white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    margin: var(--space-8) 0;
    border: 2px solid #ffedd5;
    box-shadow: var(--shadow-lg);
}

.workout-progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-5);
}

.workout-progress-info {
    font-size: 1.3rem;
    font-weight: 700;
    color: #ff6b35;
}

.progress-bar-container {
    width: 100%;
    height: 12px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-2);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #ff6b35 0%, #f59e0b 100%);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: var(--radius-full);
}

.progress-text {
    text-align: center;
    font-weight: 600;
    color: #ff6b35;
    font-size: 0.9rem;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.stat-item {
    background: white;
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    text-align: center;
    border: 2px solid var(--gray-200);
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.stat-item:hover {
    border-color: var(--primary-300);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-600);
    margin-bottom: var(--space-2);
    font-family: var(--font-mono);
}

.stat-label {
    color: var(--gray-600);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Segments Timeline */
.segments-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.segment-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.segment-item.active {
    border-color: #ff6b35;
    background: #fff5f0;
    box-shadow: var(--shadow-md);
}

.segment-item.completed {
    border-color: var(--success-500);
    background: #f0fdf4;
}

.segment-indicator {
    flex-shrink: 0;
}

.segment-number {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--gray-600);
    transition: var(--transition-normal);
}

.segment-item.active .segment-number {
    background: linear-gradient(135deg, #ff6b35, #e55a2b);
    color: white;
    box-shadow: var(--shadow-md);
}

.segment-item.completed .segment-number {
    background: linear-gradient(135deg, var(--success-500), var(--success-600));
    color: white;
}

.segment-content {
    flex: 1;
}

.segment-name {
    margin: 0 0 var(--space-2) 0;
    color: var(--gray-900);
    font-weight: 600;
}

.segment-details {
    display: flex;
    gap: var(--space-4);
    font-size: 0.9rem;
    color: var(--gray-600);
}