/* ===================================
   GDG Gen AI Study Jams Leaderboard
   Responsive Styles
   =================================== */

/* === Tablet Styles (768px - 1024px) === */
@media screen and (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        padding: 0 20px;
    }

    .main-heading {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }
    
    .floating-rewards-btn {
        bottom: 100px;
        right: 20px;
        padding: 12px 22px;
        font-size: 0.95rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .stat-value {
        font-size: 1.6rem;
    }

    .filter-controls {
        gap: 10px;
    }

    .search-box {
        min-width: 200px;
    }

    .leaderboard-table th,
    .leaderboard-table td {
        padding: 15px 10px;
        font-size: 0.9rem;
    }

    .participant-avatar {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .progress-cell {
        min-width: 150px;
    }
}

/* === Mobile Styles (max-width: 768px) === */
@media screen and (max-width: 768px) {
    /* Header Adjustments */
    .header {
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    
    .header::after {
        height: 4px;  /* Slightly thinner on mobile */
    }
    
    .header-content {
        flex-direction: column;
        text-align: center;
        position: relative;
        padding: 0 15px;
    }

    .logo-section {
        width: 100%;
        justify-content: center;
    }

    .hero-section {
        width: 100%;
    }
    
    .whatsapp-btn {
        position: fixed;
        bottom: 80px;
        right: 15px;
        padding: 14px 20px;
        font-size: 0.85rem;
        box-shadow: 0 6px 25px rgba(37, 211, 102, 0.5);
        z-index: 1001;
        height: auto;
    }
    
    .whatsapp-btn span {
        display: none;
    }
    
    .whatsapp-btn svg {
        width: 28px;
        height: 28px;
    }
    
    .floating-rewards-btn {
        bottom: 150px;
        right: 15px;
        padding: 12px 18px;
        font-size: 0.9rem;
    }
    
    .floating-rewards-btn span {
        display: none;
    }
    
    .floating-rewards-btn svg {
        width: 28px;
        height: 28px;
    }

    .main-heading {
        font-size: 1.8rem;
    }

    .subtitle {
        font-size: 0.9rem;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

    /* Stats Section - Single Column */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .stat-card {
        padding: 20px;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
    }

    .stat-icon svg {
        width: 30px;
        height: 30px;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    /* Swags Section - Mobile Adjustments */
    .swags-title {
        font-size: 1.8rem;
    }

    .swags-subtitle {
        font-size: 0.95rem;
        padding: 0 15px;
    }

    .swags-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .swag-card {
        padding: 25px 15px;
    }

    .swag-trophy {
        font-size: 2.5rem;
    }

    .swag-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .swag-name {
        font-size: 1.2rem;
    }

    .swag-email {
        font-size: 0.85rem;
    }

    .swags-note {
        padding: 20px 15px;
    }

    .swags-note p {
        font-size: 1rem;
    }

    .swags-note ul li {
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.4rem;
        margin-bottom: 15px;
    }

    /* Filter Section - Mobile Friendly */
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        width: 100%;
        min-width: auto;
    }

    .filter-buttons {
        width: 100%;
        justify-content: center;
    }

    .filter-btn {
        flex: 1;
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .sort-dropdown {
        width: 100%;
    }

    .sort-dropdown select {
        width: 100%;
    }

    .export-buttons {
        width: 100%;
        justify-content: space-between;
    }

    .export-btn,
    .reset-filters-btn {
        flex: 1;
    }

    /* Hide Desktop Table on Mobile */
    .leaderboard-table-wrapper {
        display: none !important;
    }

    /* Show Mobile Cards */
    .leaderboard-cards {
        display: flex !important;
        flex-direction: column;
        gap: 15px;
    }

    .leaderboard-card {
        background: var(--bg-card);
        border-radius: 12px;
        padding: 20px;
        box-shadow: var(--card-shadow);
        transition: all var(--transition-medium);
        animation: fadeInUp 0.5s ease-out;
    }

    .leaderboard-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--card-shadow-hover);
    }

    .card-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 15px;
        padding-bottom: 15px;
        border-bottom: 2px solid var(--glass-border);
    }

    .card-rank {
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .card-rank-number {
        font-family: 'Google Sans', sans-serif;
        font-weight: 700;
        font-size: 1.5rem;
        color: var(--text-primary);
    }

    .card-rank-medal {
        font-size: 1.5rem;
    }

    .card-badges {
        display: flex;
        align-items: center;
        gap: 8px;
    }

    .card-participant {
        display: flex;
        align-items: center;
        gap: 15px;
        margin-bottom: 15px;
    }

    .card-avatar {
        width: 50px;
        height: 50px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-family: 'Google Sans', sans-serif;
        font-weight: 700;
        font-size: 1.2rem;
        color: white;
        flex-shrink: 0;
    }

    .card-participant-info {
        flex: 1;
    }

    .card-participant-name {
        font-family: 'Google Sans', sans-serif;
        font-weight: 600;
        font-size: 1.1rem;
        margin-bottom: 3px;
        color: var(--text-primary);
    }

    .card-participant-email {
        font-size: 0.85rem;
        color: var(--text-secondary);
        word-break: break-all;
    }

    .card-progress {
        margin-bottom: 15px;
    }

    .card-progress-label {
        display: flex;
        justify-content: space-between;
        margin-bottom: 8px;
        font-size: 0.9rem;
        color: var(--text-secondary);
    }

    .card-progress-bar {
        width: 100%;
        height: 28px;
        background: var(--bg-light);
        border-radius: 14px;
        overflow: hidden;
        position: relative;
        box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
    }

    .card-progress-fill {
        height: 100%;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: white;
        font-family: 'Google Sans', sans-serif;
        font-weight: 700;
        font-size: 0.85rem;
        transition: width 1s ease-out;
    }

    .card-stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        margin-top: 15px;
    }

    .card-stat {
        text-align: center;
        padding: 10px;
        background: var(--bg-light);
        border-radius: 8px;
    }

    .card-stat-value {
        font-family: 'Google Sans', sans-serif;
        font-weight: 700;
        font-size: 1.2rem;
        color: var(--text-primary);
        margin-bottom: 3px;
    }

    .card-stat-label {
        font-size: 0.8rem;
        color: var(--text-secondary);
    }

    .card-footer {
        margin-top: 15px;
        padding-top: 15px;
        border-top: 1px solid var(--glass-border);
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .card-updated {
        font-size: 0.8rem;
        color: var(--text-secondary);
    }

    .card-share-btn {
        padding: 6px 12px;
        border: 1px solid var(--glass-border);
        border-radius: 16px;
        background: var(--bg-light);
        color: var(--text-primary);
        font-size: 0.8rem;
        cursor: pointer;
        transition: all var(--transition-fast);
    }

    .card-share-btn:hover {
        background: var(--primary-blue);
        color: white;
        border-color: var(--primary-blue);
    }

    /* Footer Adjustments */
    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-section {
        width: 100%;
        justify-content: center;
        flex-direction: column;
    }

    .footer-text {
        flex-direction: column;
        gap: 10px;
    }

    .social-links {
        justify-content: center;
    }

    /* Toast Notification */
    .toast {
        left: 15px;
        right: 15px;
        bottom: 15px;
        text-align: center;
    }
}

/* === Small Mobile Styles (max-width: 480px) === */
@media screen and (max-width: 480px) {
    .main-heading {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.85rem;
    }

    .gdg-logo {
        width: 40px;
        height: 40px;
    }

    .logo-text {
        font-size: 1rem;
    }

    .theme-toggle,
    .refresh-btn {
        width: 42px;
        height: 42px;
        font-size: 1.3rem;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
    }

    .stat-icon {
        margin: 0 auto;
    }

    .filter-buttons {
        gap: 8px;
    }

    .filter-btn {
        font-size: 0.8rem;
        padding: 8px 10px;
    }

    .export-btn span {
        font-size: 0.8rem;
    }

    .leaderboard-card {
        padding: 15px;
    }

    .card-participant {
        flex-direction: column;
        text-align: center;
    }

    .card-stats {
        grid-template-columns: 1fr;
    }
}

/* === Landscape Mode Adjustments === */
@media screen and (max-height: 600px) and (orientation: landscape) {
    .header {
        padding: 15px 0;
    }

    .main-heading {
        font-size: 1.5rem;
    }

    .subtitle {
        font-size: 0.85rem;
    }

    .stats-section {
        padding: 30px 0;
    }

    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
    }

    .stat-card {
        padding: 15px;
        flex-direction: row;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
    }

    .stat-icon svg {
        width: 24px;
        height: 24px;
    }

    .stat-value {
        font-size: 1.2rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }
}

/* === Touch Device Optimizations === */
@media (hover: none) and (pointer: coarse) {
    /* Increase touch targets */
    .filter-btn,
    .export-btn,
    .reset-filters-btn,
    .theme-toggle,
    .refresh-btn {
        min-height: 44px;
        min-width: 44px;
    }

    /* Disable hover effects on touch devices */
    .stat-card:hover,
    .leaderboard-card:hover,
    .filter-btn:hover,
    .export-btn:hover {
        transform: none;
    }

    /* Add active states instead */
    .stat-card:active {
        transform: scale(0.98);
    }

    .filter-btn:active,
    .export-btn:active {
        transform: scale(0.95);
    }

    /* Remove tooltips on touch */
    .badge-icon::after {
        display: none;
    }
}

/* === High DPI Displays === */
@media screen and (-webkit-min-device-pixel-ratio: 2),
       screen and (min-resolution: 192dpi) {
    /* Optimize for retina displays */
    .gdg-logo,
    .stat-icon svg {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

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

    .gdg-logo {
        animation: none;
    }

    .refresh-pulse {
        animation: none;
    }

    .skeleton-row {
        animation: none;
    }

    .progress-bar-fill::before {
        animation: none;
    }
}

/* === Dark Theme Mobile Adjustments === */
@media screen and (max-width: 768px) {
    body.dark-theme .leaderboard-card {
        background: var(--bg-card);
        box-shadow: 0 4px 6px rgba(0,0,0,0.5);
    }

    body.dark-theme .card-stat {
        background: var(--bg-dark);
    }

    body.dark-theme .card-share-btn {
        background: var(--bg-dark);
        border-color: var(--glass-border);
    }
}

/* === Accessibility - Focus Visible === */
@media (prefers-contrast: high) {
    .filter-btn:focus-visible,
    .export-btn:focus-visible,
    .theme-toggle:focus-visible,
    .refresh-btn:focus-visible {
        outline: 3px solid var(--primary-blue);
        outline-offset: 2px;
    }
}

/* === Loading State Responsive === */
@media screen and (max-width: 768px) {
    .loading-skeleton {
        gap: 10px;
    }

    .skeleton-row {
        height: 120px;
    }
}

/* === Swags Section Responsive === */
@media screen and (max-width: 768px) {
    /* Swags Header */
    .swags-badge {
        font-size: 0.9rem;
        padding: 10px 20px;
    }

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

    .swags-subtitle {
        font-size: 1rem;
    }

    .swags-arrow {
        font-size: 1rem;
    }

    /* Winner Cards */
    .swags-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .swag-card {
        padding: 30px 20px 25px;
    }

    .rank-circle {
        width: 40px;
        height: 40px;
        font-size: 1.4rem;
    }

    .trophy-large {
        font-size: 3rem;
    }

    .swag-avatar {
        width: 100px;
        height: 100px;
        font-size: 2.5rem;
    }

    .swag-name {
        font-size: 1.3rem;
    }

    .status-badge {
        padding: 10px 15px;
        font-size: 0.9rem;
    }

    .winner-label {
        font-size: 1rem;
        padding: 10px 20px;
    }

    /* How to Get Swags */
    .swags-how-to {
        padding: 40px 20px;
    }

    .how-to-title {
        font-size: 1.8rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .step-card {
        padding: 25px 15px;
    }

    .step-number {
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
        top: -12px;
        left: 15px;
    }

    .step-icon {
        font-size: 3rem;
    }

    .step-card h4 {
        font-size: 1.2rem;
    }

    .step-card p {
        font-size: 0.95rem;
    }

    .important-note {
        font-size: 1rem;
        padding: 20px;
    }

    /* Leaderboard Header */
    .leaderboard-header {
        padding: 25px 15px;
    }

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

    .section-subtitle {
        font-size: 1rem;
    }
}

/* === Extra Small Mobile (max-width: 480px) === */
@media screen and (max-width: 480px) {
    .swags-title {
        font-size: 1.6rem;
    }

    .swags-subtitle {
        font-size: 0.9rem;
    }

    .trophy-large {
        font-size: 2.5rem;
    }

    .swag-avatar {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }

    .swag-name {
        font-size: 1.1rem;
    }

    .status-badge {
        font-size: 0.85rem;
        padding: 8px 12px;
    }

    .step-icon {
        font-size: 2.5rem;
    }

    .how-to-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}

/* === Navigation Menu Responsive === */
@media screen and (max-width: 768px) {
    .nav-links {
        gap: 8px;
        padding: 12px 10px;
    }

    .nav-link {
        padding: 10px 16px;
        font-size: 0.85rem;
    }
}

@media screen and (max-width: 480px) {
    .nav-links {
        flex-direction: column;
        gap: 10px;
    }

    .nav-link {
        width: 100%;
        text-align: center;
    }
}

/* === Rewards Section Responsive === */
@media screen and (max-width: 768px) {
    .section-main-title {
        font-size: 2rem;
    }

    .section-description {
        font-size: 1rem;
    }

    .tiers-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .tier-card {
        padding: 30px 20px;
    }

    .tier-image {
        max-height: 200px;
    }

    .rewards-note {
        flex-direction: column;
        padding: 30px 20px;
        gap: 15px;
    }

    .note-icon {
        font-size: 2.5rem;
    }

    .note-content {
        font-size: 1rem;
    }
}

@media screen and (max-width: 480px) {
    .section-main-title {
        font-size: 1.6rem;
    }

    .tier-title {
        font-size: 1.5rem;
    }
}

/* === Syllabus Section Responsive === */
@media screen and (max-width: 768px) {
    .campaign-syllabus-link {
        margin: 30px 0 40px;
    }

    .error-helper-text {
        font-size: 1rem;
        padding: 10px 20px;
    }

    .syllabus-sheet-btn {
        padding: 20px 20px;
        gap: 15px;
    }

    .sheet-icon {
        width: 45px;
        height: 45px;
    }

    .sheet-icon svg {
        width: 28px;
        height: 28px;
    }

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

    .sheet-description {
        font-size: 0.9rem;
    }

    .category-title {
        font-size: 1.6rem;
        flex-direction: column;
        text-align: center;
    }

    .courses-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .course-card {
        padding: 25px 20px;
    }

    .course-actions {
        flex-direction: column;
    }

    .course-btn {
        width: 100%;
    }

    .resources-grid {
        grid-template-columns: 1fr;
    }

    .resources-box {
        padding: 30px 20px;
    }
}

@media screen and (max-width: 480px) {
    .campaign-syllabus-link {
        margin: 25px 0 35px;
    }

    .error-helper-text {
        font-size: 0.95rem;
        padding: 10px 15px;
        max-width: 100%;
    }

    .syllabus-sheet-btn {
        flex-direction: column;
        text-align: center;
        padding: 25px 20px;
        gap: 15px;
    }

    .sheet-icon {
        width: 55px;
        height: 55px;
    }

    .sheet-icon svg {
        width: 32px;
        height: 32px;
    }

    .sheet-title {
        font-size: 1.05rem;
    }

    .sheet-description {
        font-size: 0.85rem;
    }

    .sheet-arrow {
        transform: rotate(90deg);
    }

    .syllabus-sheet-btn:hover .sheet-arrow {
        transform: rotate(90deg) translateX(5px);
    }

    .category-title {
        font-size: 1.4rem;
    }

    .course-name {
        font-size: 1.1rem;
    }

    .resources-title {
        font-size: 1.5rem;
    }
}

/* === Credits Banner Responsive Styles === */
@media screen and (max-width: 768px) {
    .credits-banner {
        padding: 70px 0 30px;
    }

    .credits-alert {
        flex-direction: column;
        gap: 20px;
        padding: 25px 20px;
        text-align: center;
    }

    .credits-icon {
        font-size: 50px;
    }

    .credits-title {
        font-size: 20px;
    }

    .credits-description {
        font-size: 15px;
    }

    .credits-btn {
        width: 100%;
        padding: 14px 25px;
        font-size: 15px;
    }
}

@media screen and (max-width: 480px) {
    .credits-banner {
        padding: 60px 0 20px;
    }

    .credits-alert {
        padding: 20px 15px;
        gap: 15px;
    }

    .credits-icon {
        font-size: 40px;
    }

    .credits-title {
        font-size: 18px;
    }

    .credits-description {
        font-size: 14px;
    }

    .credits-btn {
        padding: 12px 20px;
        font-size: 14px;
    }
}