/* ============================================
   Sbwee Presentation Schedule Checker
   Mobile-first Responsive Styles
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
    /* Colors */
    --color-primary: #007AFF;
    --color-primary-hover: #0056CC;
    --color-primary-light: rgba(0, 122, 255, 0.1);
    --color-background: #E8E8F5;
    --color-white: #FFFFFF;
    --color-text: #000000;
    --color-text-secondary: #666666;
    --color-text-muted: #999999;
    --color-accent: #F5F5F5;
    --color-error: #FF3B30;
    --color-error-bg: #FFF0F0;
    --color-success: #34C759;
    --color-success-bg: #F0FFF4;
    --color-divider: #E5E5EA;
    --color-skeleton: #E0E0E0;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 0.75rem;     /* 12px */
    --font-size-sm: 0.875rem;    /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg: 1.125rem;    /* 18px */
    --font-size-xl: 1.25rem;     /* 20px */
    --font-size-2xl: 1.5rem;     /* 24px */
    --font-size-3xl: 2rem;       /* 32px */

    /* Spacing */
    --spacing-xs: 0.25rem;       /* 4px */
    --spacing-sm: 0.5rem;        /* 8px */
    --spacing-md: 1rem;          /* 16px */
    --spacing-lg: 1.5rem;        /* 24px */
    --spacing-xl: 2rem;          /* 32px */
    --spacing-2xl: 3rem;         /* 48px */

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);

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

    /* Z-index layers */
    --z-dropdown: 100;
    --z-modal: 1000;
    --z-toast: 1100;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background-color: var(--color-background);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Visually hidden but accessible */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Hidden utility */
.hidden {
    display: none !important;
}

/* Focus styles for accessibility */
:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
}

button:focus:not(:focus-visible) {
    outline: none;
}

/* ============================================
   Layout
   ============================================ */

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: var(--spacing-md);
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-2xl);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* ============================================
   Offline Banner
   ============================================ */

.offline-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: #FF9500;
    color: var(--color-white);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: var(--z-toast);
    animation: slideDown var(--transition-base);
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

/* ============================================
   Animation Container
   ============================================ */

.animation-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.animation-container.small {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Heading Section
   ============================================ */

.heading-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    text-align: center;
    width: 100%;
}

.main-heading {
    font-size: var(--font-size-xl);
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
    max-width: 280px;
}

.info-button {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-primary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
}

.info-button:hover {
    background-color: var(--color-primary-light);
}

/* ============================================
   Search Section
   ============================================ */

.search-section {
    width: 100%;
    max-width: 400px;
}

.search-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.search-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.search-input-wrapper {
    margin-bottom: var(--spacing-md);
}

.search-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    border: 2px solid var(--color-divider);
    border-radius: var(--radius-md);
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    text-align: center;
    letter-spacing: 1px;
}

.search-input::placeholder {
    color: var(--color-text-muted);
    letter-spacing: 0;
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-light);
    outline: none;
}

.search-input.error {
    border-color: var(--color-error);
}

/* Error Message */
.error-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-error-bg);
    color: var(--color-error);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
    animation: fadeIn var(--transition-fast);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Search Button */
.search-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-white);
    background-color: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.search-button:hover {
    background-color: var(--color-primary-hover);
}

.search-button:active {
    transform: scale(0.98);
}

.search-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.search-icon {
    flex-shrink: 0;
}

/* Loading Spinner */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   Gaming Style - Main Page
   ============================================ */

.heading-container.gaming-style {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.heading-glow {
    color: var(--color-primary);
    text-shadow: 0 0 10px rgba(0, 122, 255, 0.5);
    font-weight: 700;
}

.info-button.gaming-btn {
    width: auto;
    height: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 122, 255, 0.3);
    margin-top: var(--spacing-sm);
}

.info-button.gaming-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

.info-button.gaming-btn .info-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-style: italic;
    font-weight: 700;
}

.info-button.gaming-btn .info-text {
    font-weight: 500;
}

/* ============================================
   Gaming Grid Sessions Section
   ============================================ */

.sessions-section {
    margin-top: var(--spacing-xl);
    padding: 0 var(--spacing-md);
}

.sessions-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    text-align: center;
}

.title-icon {
    font-size: var(--font-size-2xl);
}

.sessions-subtitle {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

/* Vertical Timeline Styles */
.sessions-timeline {
    position: relative;
    padding: var(--spacing-md) 0;
    margin: 0 auto;
    max-width: 600px;
}

/* Timeline vertical line */
.sessions-timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom,
        var(--color-divider) 0%,
        var(--color-primary) 50%,
        var(--color-divider) 100%);
}

.timeline-item {
    position: relative;
    display: flex;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    padding-left: 60px;
    transition: all var(--transition-base);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* Timeline marker (circle) */
.timeline-marker {
    position: absolute;
    left: 22px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-white);
    border: 3px solid var(--color-divider);
    z-index: 2;
    transition: all var(--transition-base);
}

/* Timeline content */
.timeline-content {
    flex: 1;
    display: flex;
    gap: var(--spacing-sm);
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.timeline-number {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--color-primary);
}

.timeline-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.timeline-day-time {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.timeline-day {
    font-weight: 700;
    font-size: var(--font-size-md);
    color: var(--color-text);
}

.timeline-time {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-weight: 500;
}

.timeline-type {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    line-height: 1.3;
}

.timeline-location {
    display: inline-block;
    padding: 4px 10px;
    background: var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-primary);
    align-self: flex-start;
}

/* Timeline Item States */
/* Default state - fully greyed out (not next) */
.timeline-item {
    opacity: 0.3;
}

.timeline-item .timeline-marker {
    background: #d1d1d6;
    border-color: #d1d1d6;
}

.timeline-item .timeline-content {
    background: #f5f5f7;
    filter: grayscale(100%);
}

.timeline-item .timeline-number {
    background: #e5e5e7;
    color: #8e8e93;
}

.timeline-item .timeline-day,
.timeline-item .timeline-type {
    color: #8e8e93;
}

.timeline-item .timeline-time,
.timeline-item .timeline-location {
    color: #aeaeb2;
}

.timeline-item.passed {
    opacity: 0.2;
}

.timeline-item.passed .timeline-marker {
    background: #d1d1d6;
    border-color: #d1d1d6;
}

.timeline-item.passed .timeline-content {
    background: #f5f5f7;
    filter: grayscale(100%);
}

.timeline-item.active {
    opacity: 1;
}

.timeline-item.active .timeline-marker {
    background: var(--color-success);
    border-color: var(--color-success);
    box-shadow: 0 0 15px rgba(52, 199, 89, 0.6);
    animation: pulseMarker 2s infinite;
}

.timeline-item.active .timeline-content {
    background: var(--color-white);
    border-color: var(--color-success);
    box-shadow: 0 0 20px rgba(52, 199, 89, 0.2);
    filter: none;
}

.timeline-item.active .timeline-number {
    background: var(--color-success);
    color: var(--color-white);
}

.timeline-item.active .timeline-day,
.timeline-item.active .timeline-type {
    color: var(--color-text);
}

.timeline-item.active .timeline-time {
    color: var(--color-text-muted);
}

.timeline-item.active .timeline-location {
    color: var(--color-primary);
}

.timeline-item.next {
    opacity: 1;
}

.timeline-item.next .timeline-marker {
    background: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0, 122, 255, 0.5);
    transform: scale(1.2);
}

.timeline-item.next .timeline-content {
    background: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 0 15px rgba(0, 122, 255, 0.15);
    transform: translateX(4px);
    filter: none;
}

.timeline-item.next .timeline-number {
    background: var(--color-primary);
    color: var(--color-white);
}

.timeline-item.next .timeline-day,
.timeline-item.next .timeline-type {
    color: var(--color-text);
}

.timeline-item.next .timeline-time {
    color: var(--color-text-muted);
}

.timeline-item.next .timeline-location {
    color: var(--color-primary);
}

@keyframes pulseMarker {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 10px rgba(52, 199, 89, 0.6);
    }
    50% {
        transform: scale(1.15);
        box-shadow: 0 0 20px rgba(52, 199, 89, 0.8);
    }
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 0 5px rgba(52, 199, 89, 0.5);
    }
    50% {
        box-shadow: 0 0 15px rgba(52, 199, 89, 0.8);
    }
}

.session-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-white);
}

.session-badge.graduation {
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
}

.session-badge.non-tech {
    background: linear-gradient(135deg, #FF9500, #FF6B00);
}

.session-day-big {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
    margin-top: var(--spacing-xs);
}

.session-time-big {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-primary);
    margin-top: var(--spacing-xs);
}

.session-type-name {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    text-align: center;
}

.session-location-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

.session-status-indicator {
    position: absolute;
    bottom: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-divider);
    transition: all var(--transition-base);
}

.session-card.active .session-status-indicator {
    background: var(--color-success);
    animation: pulse 2s infinite;
}

.session-card.next .session-status-indicator {
    background: var(--color-primary);
}

@keyframes pulse {
    0%, 100% {
        transform: translateX(-50%) scale(1);
        opacity: 1;
    }
    50% {
        transform: translateX(-50%) scale(1.5);
        opacity: 0.7;
    }
}

/* Last Updated */
.last-updated {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-align: center;
}

/* ============================================
   Modal
   ============================================ */

.modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn var(--transition-fast);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 360px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp var(--transition-base);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--color-divider);
}

.modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-top: var(--spacing-sm);
}

.modal-body {
    text-align: center;
}

.sbwee-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.sbwee-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.sbwee-features {
    background: var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.sbwee-features h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.sbwee-features ul {
    list-style: none;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.sbwee-features li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.sbwee-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.sbwee-status {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-divider);
}

.status-item:last-child {
    border-bottom: none;
}

.status-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.status-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Schedule Page Styles
   ============================================ */

.schedule-page .container {
    padding-top: var(--spacing-lg);
}

.schedule-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-lg);
}

/* Schedules Container */
.schedules-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

/* No Presentations Card */
.no-presentations-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--color-accent);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-divider);
}

.no-presentations-icon {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.no-presentations-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.no-presentations-message {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    max-width: 280px;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

/* Group Info Card */
.group-info-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-lg);
}

.group-badge-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
    margin: 0 auto var(--spacing-md);
}

.group-badge-large .badge-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.group-badge-large .badge-number {
    font-size: 32px;
    font-weight: 700;
    line-height: 1;
    margin-top: 4px;
}

.group-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    text-align: center;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.group-members-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.group-member {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-accent);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    transition: all var(--transition-base);
}

.group-member.current-student {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0, 122, 255, 0.3);
}

.member-name {
    font-size: var(--font-size-sm);
    font-weight: 600;
    flex: 1;
    word-wrap: break-word;
    word-break: break-word;
    overflow-wrap: break-word;
    line-height: 1.4;
}

/* Remove long-name class animation (now using word wrap) */
.member-name.long-name {
    /* Animation removed - using word wrap instead */
}

.member-id {
    font-size: var(--font-size-xs);
    opacity: 0.7;
    font-family: 'SF Mono', Monaco, monospace;
}

.group-member.current-student .member-name,
.group-member.current-student .member-id {
    color: var(--color-white);
}

/* Individual Presentation Card */
.presentation-card {
    position: relative;
    background: var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--color-divider);
}

/* Different padding-bottom for different card types */
.presentation-card.has-next-button {
    padding-bottom: 80px; /* Extra padding for Next?! button */
}

.presentation-card.reminder-card {
    padding-bottom: 20px; /* Minimal padding for WhatsApp/Email cards */
}

.presentation-card.non-technical-card {
    padding-bottom: 0; /* No padding for non-technical cards */
}

/* Presentation Header */
.presentation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: nowrap;
    gap: var(--spacing-sm);
}

/* Presentation Type Badge */
.presentation-type-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    overflow: hidden;
    flex-shrink: 1;
    min-width: 0;
    position: relative;
}

/* Scrolling badge for long text */
.presentation-type-badge.long-badge {
    overflow: hidden;
}

.presentation-type-badge .badge-scroll {
    display: inline-block;
    animation: badge-marquee 12s linear infinite;
}

@keyframes badge-marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.presentation-type-badge.graduation {
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    color: var(--color-white);
}

.presentation-type-badge.non-technical {
    background: linear-gradient(135deg, #FF9500, #FF6B00);
    color: var(--color-white);
}

/* Small Group Badge (inside card) */
.group-badge-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    border-radius: var(--radius-md);
    color: var(--color-white);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.group-badge-small .badge-label {
    font-size: 8px;
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
}

.group-badge-small .badge-number {
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1;
}

/* Presentation Card Details */
.presentation-card .presentation-details {
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.presentation-card .detail-item {
    gap: var(--spacing-sm);
}

.presentation-card .detail-icon {
    width: 36px;
    height: 36px;
    background: var(--color-white);
}

/* Countdown Section in Card */
.presentation-card .countdown-section {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
}

.presentation-card .countdown-section.passed {
    background: linear-gradient(135deg, rgba(255, 59, 48, 0.1), rgba(255, 59, 48, 0.05));
}

.presentation-card .countdown-section.passed .countdown-value {
    color: var(--color-error);
}

.presentation-card .countdown-section.passed .countdown-label {
    color: var(--color-error);
}

/* Reminder Section in Card */
.presentation-card .reminder-section {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-divider);
}

.presentation-card .form-row {
    margin-bottom: 0;
}

.presentation-card .form-group {
    margin-bottom: var(--spacing-xs);
}

.presentation-card .reminder-button {
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
}

/* Next Prediction Button */
.next-prediction-btn {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

.next-prediction-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #0056CC, var(--color-primary));
}

.next-prediction-btn:active {
    transform: translateY(0);
}

.next-prediction-btn svg {
    transition: transform var(--transition-base);
}

.next-prediction-btn:hover svg {
    transform: translateX(2px);
}

/* Prediction View Styles - Purple/Magenta Theme */
.presentation-card.showing-prediction {
    background: linear-gradient(135deg, rgba(191, 90, 242, 0.15), rgba(217, 70, 239, 0.1));
    border: 3px solid #BF5AF2;
    box-shadow: 0 8px 24px rgba(191, 90, 242, 0.3);
}

.presentation-type-badge.prediction {
    background: linear-gradient(135deg, #BF5AF2, #D946EF);
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(191, 90, 242, 0.4);
}

.prediction-tag {
    font-size: 10px;
    background: rgba(255, 255, 255, 0.4);
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 700;
    animation: pulse-tag 2s ease-in-out infinite;
}

@keyframes pulse-tag {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.group-badge-small.prediction-group {
    background: linear-gradient(135deg, #BF5AF2, #D946EF);
    box-shadow: 0 4px 12px rgba(191, 90, 242, 0.4);
}

.countdown-section.prediction-countdown {
    background: linear-gradient(135deg, rgba(191, 90, 242, 0.2), rgba(217, 70, 239, 0.15));
    border: 3px solid #BF5AF2;
    box-shadow: 0 0 20px rgba(191, 90, 242, 0.3);
}

.countdown-section.prediction-countdown .countdown-value {
    color: #9333EA;
    font-weight: 800;
    text-shadow: 0 0 10px rgba(191, 90, 242, 0.3);
}

.countdown-section.prediction-countdown .countdown-unit,
.countdown-section.prediction-countdown .countdown-separator {
    color: #BF5AF2;
}

.countdown-section.prediction-countdown .countdown-label {
    color: #9333EA;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Skeleton Loading */
.skeleton-container {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.skeleton {
    background: var(--color-skeleton);
    border-radius: var(--radius-sm);
}

.skeleton-name {
    height: 28px;
    width: 70%;
    margin: 0 auto var(--spacing-sm);
}

.skeleton-group {
    height: 20px;
    width: 40%;
    margin: 0 auto var(--spacing-md);
}

.skeleton-divider {
    height: 1px;
    width: 100%;
    margin: var(--spacing-md) 0;
}

.skeleton-detail {
    height: 48px;
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.skeleton-countdown {
    height: 80px;
    width: 100%;
    margin-top: var(--spacing-md);
}

/* Student Info */
.student-info {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.student-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.student-number {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    font-family: monospace;
}

/* Group Badge */
.group-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.badge-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    opacity: 0.9;
}

.badge-number {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1;
}

/* Divider */
.divider {
    border: none;
    height: 1px;
    background-color: var(--color-divider);
    margin: var(--spacing-md) 0;
}

/* Presentation Details */
.presentation-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.detail-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
}

.detail-content {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
}

/* Countdown Section */
.countdown-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary-light), rgba(0, 122, 255, 0.05));
    border-radius: var(--radius-md);
}

.countdown-icon {
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.countdown-timer {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.countdown-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.countdown-unit {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.countdown-separator {
    color: var(--color-text-muted);
}

.countdown-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* Notes Card from Dr. Sibel */
.notes-card {
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.1), rgba(255, 149, 0, 0.05));
    border: 2px solid rgba(255, 204, 0, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.notes-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.notes-header svg {
    color: #FF9500;
    flex-shrink: 0;
}

.notes-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.notes-content {
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-secondary);
    margin: 0;
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--radius-md);
    border-left: 4px solid #FF9500;
}

/* Reminder Section */
.reminder-section {
    margin-top: var(--spacing-sm);
}

.reminder-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-group {
    margin-bottom: var(--spacing-sm);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.phone-input-wrapper {
    display: flex;
    gap: var(--spacing-sm);
}

.country-select {
    width: 90px;
    padding: var(--spacing-sm) var(--spacing-sm);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    border: 2px solid var(--color-divider);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    cursor: pointer;
}

.country-select:focus {
    border-color: var(--color-primary);
    outline: none;
}

.phone-input,
.email-input {
    flex: 1;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    border: 2px solid var(--color-divider);
    border-radius: var(--radius-sm);
    background: var(--color-white);
    color: var(--color-text);
    transition: border-color var(--transition-fast);
}

.phone-input:focus,
.email-input:focus {
    border-color: var(--color-primary);
    outline: none;
}

.phone-input.error,
.email-input.error {
    border-color: var(--color-error);
}

.field-error {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

/* Reminder Button */
.reminder-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-white);
    background: linear-gradient(135deg, #25D366, #128C7E);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    margin-top: var(--spacing-sm);
}

.reminder-button.whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
    margin-bottom: var(--spacing-md);
}

.reminder-button.whatsapp:hover {
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
}

.reminder-button.email {
    background: linear-gradient(135deg, var(--color-primary), #0056CC);
    margin-top: var(--spacing-sm);
}

.reminder-button.email:hover {
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.4);
}

.reminder-button:hover {
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
}

.reminder-button:active {
    transform: scale(0.98);
}

.reminder-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Reminder Messages */
.reminder-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
    animation: fadeIn var(--transition-fast);
}

.reminder-message.success {
    background-color: var(--color-success-bg);
    color: var(--color-success);
}

.reminder-message.error {
    background-color: var(--color-error-bg);
    color: var(--color-error);
}

/* Back Button */
.back-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    font-family: var(--font-family);
    color: var(--color-primary);
    background: var(--color-white);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.back-button:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Copy Button */
.copy-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-sm);
    cursor: pointer;
    margin-top: var(--spacing-md);
    transition: background-color var(--transition-fast);
}

.copy-button:hover {
    background-color: var(--color-accent);
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

/* Small phones (320px - 374px) */
@media (max-width: 374px) {
    :root {
        --font-size-xl: 1.125rem;
        --font-size-2xl: 1.25rem;
        --font-size-3xl: 1.5rem;
    }

    .main-heading {
        font-size: var(--font-size-lg);
        max-width: 240px;
    }

    .modal-content {
        padding: var(--spacing-md);
    }

    .countdown-timer {
        gap: 2px;
    }

    .countdown-value {
        font-size: var(--font-size-xl);
    }
}

/* Medium phones (375px - 413px) */
@media (min-width: 375px) and (max-width: 413px) {
    .container {
        padding: var(--spacing-md);
    }
}

/* Large phones (414px - 767px) */
@media (min-width: 414px) {
    .container {
        padding: var(--spacing-lg);
    }

    .search-card,
    .schedule-card {
        padding: var(--spacing-xl);
    }
}

/* Tablets (768px+) */
@media (min-width: 768px) {
    .container {
        max-width: 540px;
        padding: var(--spacing-xl);
        padding-top: var(--spacing-2xl);
    }

    .main-heading {
        font-size: var(--font-size-2xl);
        max-width: 360px;
    }

    .animation-container lottie-player {
        width: 220px !important;
        height: 220px !important;
    }

    .modal-content {
        max-width: 420px;
    }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
    .container {
        max-width: 580px;
    }

    .search-card,
    .schedule-card {
        border-radius: var(--radius-xl);
    }
}

/* Large Desktop (1920px+) */
@media (min-width: 1920px) {
    html {
        font-size: 18px;
    }

    .container {
        max-width: 640px;
    }
}

/* ============================================
   High Contrast Mode Support
   ============================================ */

@media (prefers-contrast: high) {
    :root {
        --color-primary: #0055CC;
        --color-text: #000000;
        --color-text-secondary: #333333;
        --color-divider: #666666;
    }

    .search-input,
    .phone-input,
    .email-input,
    .country-select {
        border-width: 3px;
    }
}

/* ============================================
   Reduced Motion Support
   ============================================ */

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

    .loading-spinner {
        animation: none;
    }
}

/* ============================================
   Note Section (for No Presentations Card)
   ============================================ */

.note-section {
    background: linear-gradient(135deg, rgba(255, 204, 0, 0.08), rgba(255, 149, 0, 0.03));
    border: 2px solid rgba(255, 204, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.note-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.note-icon {
    font-size: 20px;
    line-height: 1;
}

.note-title {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: #FF9500;
    margin: 0;
}

.note-content {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    color: var(--color-text);
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    body {
        background: white;
    }

    .offline-banner,
    .reminder-section,
    .back-button,
    .copy-button,
    .search-button {
        display: none !important;
    }

    .schedule-card {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}