/* AudiEngage - Professional Interactive UI Theme */
/* Modern, Elegant, and Engaging Design System */

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    height: 100%;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    height: 100%;
    background: #f5f7fa;
    background-attachment: fixed;
    color: #1f2937;
    font-size: 16px;
    overflow-x: hidden;
    min-height: 100vh;
    transition: background 0.3s ease, color 0.3s ease;
    position: relative;
}

body.dark {
    background: #0f172a;
    color: #e2e8f0;
}

/* ===== CSS VARIABLES ===== */
:root {
    --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;

    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    --green-100: #dcfce7;
    --green-500: #22c55e;
    --green-600: #16a34a;
    --green-800: #166534;

    --yellow-100: #fef3c7;
    --yellow-500: #eab308;
    --yellow-600: #ca8a04;

    --red-100: #fee2e2;
    --red-500: #ef4444;
    --red-600: #dc2626;

    --orange-100: #ffedd5;
    --orange-500: #f97316;
    --orange-600: #ea580c;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;

    --transition: 0.3s ease;
}

/* ===== CONTAINER ===== */
.container {
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    max-width: 1400px;
    margin: 0 auto;
    padding: 48px;
    position: relative;
    transition: all 0.3s ease;
    z-index: 1;
    animation: containerFadeIn 0.6s ease-out;
}

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

.container:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

body.dark .container {
    background: #1e293b;
    border-color: #334155;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

body.dark .container:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

/* ===== TYPOGRAPHY ===== */
h1 {
    color: #1f2937;
    margin-bottom: 12px;
    font-size: 42px;
    font-weight: 800;
    text-align: center;
    letter-spacing: -0.5px;
    animation: titleSlideIn 0.8s ease-out;
    position: relative;
}

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

body.dark h1 {
    color: #f1f5f9;
}

.subtitle {
    color: var(--gray-600);
    margin-bottom: 50px;
    font-size: 18px;
    font-weight: 500;
    text-align: center;
    animation: subtitleFadeIn 1s ease-out 0.2s both;
}

@keyframes subtitleFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body.dark .subtitle {
    color: var(--gray-400);
}

h3 {
    color: var(--gray-900);
    margin-bottom: 24px;
    font-size: 26px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 12px;
    letter-spacing: -0.3px;
}

body.dark h3 {
    color: #f1f5f9;
}

h3::before {
    content: '';
    width: 5px;
    height: 28px;
    background: #3b82f6;
    border-radius: 3px;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

body.dark h3::before {
    background: #60a5fa;
    box-shadow: 0 2px 8px rgba(96, 165, 250, 0.3);
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 18px;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

body.dark .theme-toggle {
    background: #334155;
    border-color: #475569;
    color: #e2e8f0;
}

.theme-toggle:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* ===== ADMIN LINK ===== */
.admin-link {
    position: fixed;
    top: 24px;
    right: 76px;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    color: var(--gray-700);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 18px;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

body.dark .admin-link {
    background: #334155;
    border-color: #475569;
    color: #e2e8f0;
}

.admin-link:hover {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
    background: var(--primary-50);
    border-color: var(--primary-300);
    color: var(--primary-600);
}

body.dark .admin-link:hover {
    background: #475569;
    border-color: var(--primary-500);
    color: var(--primary-300);
}

/* ===== FORM SECTIONS ===== */
.form-section {
    margin-bottom: 40px;
    padding: 32px;
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 16px;
    border: 1px solid #e5e7eb;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body.dark .form-section {
    background: #1e293b;
    border-color: #334155;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.form-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

body.dark .form-section:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    border-color: #60a5fa;
}

/* ===== INPUTS ===== */
.input-group {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}

.input-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
select,
textarea {
    padding: 16px 20px;
    font-size: 15px;
    border: 2px solid #d1d5db;
    background: #ffffff;
    backdrop-filter: none;
    color: var(--gray-800);
    border-radius: 8px;
    transition: all 0.3s ease;
    font-family: inherit;
    width: 100%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

body.dark input[type="text"],
body.dark input[type="email"],
body.dark input[type="tel"],
body.dark input[type="number"],
body.dark select,
body.dark textarea {
    background: #0f172a;
    border-color: #475569;
    color: #e2e8f0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

body.dark input[type="text"]:focus,
body.dark input[type="email"]:focus,
body.dark input[type="tel"]:focus,
body.dark input[type="number"]:focus,
body.dark select:focus,
body.dark textarea:focus {
    border-color: #60a5fa;
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.1);
}

input::placeholder,
textarea::placeholder {
    color: var(--gray-400);
}

body.dark input::placeholder,
body.dark textarea::placeholder {
    color: #64748b;
}

/* ===== BUTTONS ===== */
.add-btn, .control-btn {
    padding: 16px 32px;
    font-size: 16px;
    font-weight: 600;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    position: relative;
    overflow: hidden;
}

.add-btn:hover, .control-btn:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.add-btn:active, .control-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.btn {
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: #3b82f6;
    color: #fff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-success {
    background: #10b981;
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background: #ffffff;
    color: var(--gray-700);
    border: 1px solid #e5e7eb;
    backdrop-filter: none;
}

body.dark .btn-secondary {
    background: #334155;
    color: #e2e8f0;
    border-color: #475569;
}

.btn-secondary:hover {
    background: #f3f4f6;
    border-color: #3b82f6;
    color: #3b82f6;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

body.dark .btn-secondary:hover {
    background: #475569;
    border-color: #60a5fa;
    color: #60a5fa;
}

.btn-danger {
    background: #ef4444;
    color: #fff;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

.btn-warning {
    background: #f59e0b;
    color: #fff;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: #d97706;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.4);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ===== FEATURE GRID ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 20px;
}

.feature-card {
    background: #ffffff;
    backdrop-filter: none;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

body.dark .feature-card {
    background: #1e293b;
    border-color: #334155;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: #3b82f6;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

body.dark .feature-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border-color: #60a5fa;
}

.feature-card h4 {
    color: var(--gray-800);
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

body.dark .feature-card h4 {
    color: #f1f5f9;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    margin: 0;
    font-size: 15px;
}

body.dark .feature-card p {
    color: var(--gray-400);
}

/* ===== VISUALIZATION SECTION ===== */
.visualization-section {
    margin-bottom: 40px;
}

.controls {
    display: flex;
    gap: 16px;
    margin-bottom: 30px;
    flex-wrap: wrap;
    justify-content: center;
}

.control-btn {
    background: #10b981;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.control-btn:hover {
    background: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* ===== PLACEHOLDER CONTENT ===== */
.placeholder-content {
    padding: 30px;
    text-align: left;
}

.placeholder-content h4 {
    color: var(--gray-800);
    margin-bottom: 16px;
    font-size: 20px;
    font-weight: 600;
}

body.dark .placeholder-content h4 {
    color: #f1f5f9;
}

.placeholder-content p {
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 16px;
}

body.dark .placeholder-content p {
    color: var(--gray-400);
}

.placeholder-content ul {
    color: var(--gray-500);
    line-height: 1.7;
    margin-left: 20px;
}

body.dark .placeholder-content ul {
    color: var(--gray-400);
}

.placeholder-content li {
    margin-bottom: 8px;
}

#contentArea {
    min-height: 300px;
    border: 1px solid var(--gray-200);
    background: #ffffff;
    border-radius: var(--radius-xl);
    padding: 0;
    overflow: auto;
    transition: all var(--transition);
}

body.dark #contentArea {
    background: #0f172a;
    border-color: #334155;
}

/* ===== STATUS MESSAGES ===== */
.status-message {
    padding: 16px 24px;
    margin-top: 20px;
    border-radius: var(--radius-lg);
    font-size: 15px;
    font-weight: 500;
    display: none;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.status-message.success {
    background: var(--green-100);
    color: var(--green-600);
    border: 1px solid var(--green-500);
    display: block;
}

.status-message.error {
    background: var(--red-100);
    color: var(--red-600);
    border: 1px solid var(--red-500);
    display: block;
}

body.dark .status-message.success {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--green-500);
    color: var(--green-500);
}

body.dark .status-message.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--red-500);
    color: var(--red-500);
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    color: var(--gray-800);
    padding: 14px 24px;
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1100;
}

body.dark .toast {
    background: #334155;
    border-color: #475569;
    color: #e2e8f0;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: var(--green-100);
    border-color: var(--green-500);
    color: var(--green-800);
}

.toast.error {
    background: var(--red-100);
    border-color: var(--red-500);
    color: var(--red-600);
}

body.dark .toast.success {
    background: rgba(34, 197, 94, 0.15);
    border-color: var(--green-500);
    color: var(--green-500);
}

body.dark .toast.error {
    background: rgba(239, 68, 68, 0.15);
    border-color: var(--red-500);
    color: var(--red-500);
}

/* ===== PASSWORD DISPLAY (index page) ===== */
.password-display {
    position: relative;
    margin-bottom: 24px;
}

#myInput {
    width: 100%;
    padding: 14px 50px 14px 14px;
    font-size: 15px;
    border: 1px solid var(--gray-300);
    background: var(--gray-50);
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-weight: 500;
    color: var(--gray-800);
    border-radius: var(--radius-lg);
    transition: all var(--transition);
}

body.dark #myInput {
    background: #0f172a;
    border-color: #475569;
    color: #e2e8f0;
}

#myInput:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

#myInput::placeholder {
    color: var(--gray-400);
}

body.dark #myInput::placeholder {
    color: #64748b;
}

.copy-btn {
    position: absolute;
    right: 6px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 1px solid var(--gray-200);
    color: var(--gray-500);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

body.dark .copy-btn {
    border-color: #475569;
    color: #94a3b8;
}

.copy-btn:hover {
    background: var(--primary-50);
    color: var(--primary-600);
    border-color: var(--primary-300);
}

body.dark .copy-btn:hover {
    background: #334155;
    color: var(--primary-400);
    border-color: var(--primary-500);
}

.generate-btn {
    width: 100%;
    padding: 14px;
    font-size: 14px;
    font-weight: 600;
    background: #3b82f6;
    color: #ffffff;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-md);
}

.generate-btn:hover {
    background: #2563eb;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

/* ===== PATTERN SELECTOR ===== */
.pattern-selector {
    margin-bottom: 24px;
    display: flex;
    gap: 2px;
    background: var(--gray-200);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

body.dark .pattern-selector {
    background: #334155;
    border-color: #475569;
}

.pattern-option {
    flex: 1;
}

.pattern-option input[type="radio"] {
    display: none;
}

.pattern-option label {
    display: block;
    padding: 12px;
    background: #ffffff;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 13px;
    color: var(--gray-500);
    text-align: center;
}

body.dark .pattern-option label {
    background: #1e293b;
    color: #94a3b8;
}

.pattern-option input[type="radio"]:checked + label {
    background: #3b82f6;
    color: #ffffff;
}

.pattern-option label:hover {
    background: #eff6ff;
    color: #3b82f6;
}

body.dark .pattern-option label:hover {
    background: #334155;
    color: #60a5fa;
}

.pattern-option input[type="radio"]:checked + label:hover {
    background: #2563eb;
    color: #ffffff;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    body {
        padding: 12px;
    }

    .container {
        padding: 24px;
        margin: 10px;
    }

    .input-row {
        grid-template-columns: 1fr;
    }

    .controls {
        justify-content: stretch;
    }

    .control-btn {
        flex: 1;
    }

    h1 {
        font-size: 28px;
    }

    .subtitle {
        font-size: 16px;
    }

    .theme-toggle {
        width: 40px;
        height: 40px;
        top: 16px;
        right: 16px;
    }

    .admin-link {
        width: 40px;
        height: 40px;
        top: 16px;
        right: 64px;
    }
}

@media (max-width: 480px) {
    .input-group {
        flex-direction: column;
        align-items: stretch;
    }

    .add-btn, .control-btn {
        width: 100%;
        margin-top: 10px;
    }
}

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

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

/* ===== TIMER RING ===== */
.timer-ring {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.timer-ring svg {
    transform: rotate(-90deg);
}

.timer-ring-circle-bg {
    fill: none;
    stroke: var(--gray-200);
    stroke-width: 6;
}

body.dark .timer-ring-circle-bg {
    stroke: #334155;
}

.timer-ring-circle {
    fill: none;
    stroke: var(--primary-500);
    stroke-width: 6;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s linear;
}

.timer-ring-circle.warning {
    stroke: var(--orange-500);
}

.timer-ring-circle.danger {
    stroke: var(--red-500);
}

.timer-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-800);
}

body.dark .timer-ring-text {
    color: #f1f5f9;
}

/* ===== PODIUM (1st/2nd/3rd) ===== */
.leaderboard-row.podium-1st {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 193, 7, 0.15) 100%);
    border: 2px solid #fbbf24;
    position: relative;
    box-shadow: 0 4px 20px rgba(251, 191, 36, 0.3);
}

body.dark .leaderboard-row.podium-1st {
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(245, 158, 11, 0.15) 100%);
    border-color: #fbbf24;
    box-shadow: 0 4px 20px rgba(251, 191, 36, 0.2);
}

.leaderboard-row.podium-1st::before {
    content: '🥇';
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 28px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(-50%); }
    50% { transform: translateY(-60%); }
}

.leaderboard-row.podium-2nd {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.2) 0%, rgba(156, 163, 175, 0.15) 100%);
    border: 2px solid #9ca3af;
    position: relative;
    box-shadow: 0 4px 20px rgba(156, 163, 175, 0.3);
}

body.dark .leaderboard-row.podium-2nd {
    background: linear-gradient(135deg, rgba(209, 213, 219, 0.15) 0%, rgba(156, 163, 175, 0.1) 100%);
    border-color: #9ca3af;
    box-shadow: 0 4px 20px rgba(156, 163, 175, 0.2);
}

.leaderboard-row.podium-2nd::before {
    content: '🥈';
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 28px;
    animation: bounce 2s ease-in-out 0.2s infinite;
}

.leaderboard-row.podium-3rd {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.2) 0%, rgba(234, 88, 12, 0.15) 100%);
    border: 2px solid #ea580c;
    position: relative;
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.3);
}

body.dark .leaderboard-row.podium-3rd {
    background: linear-gradient(135deg, rgba(253, 186, 116, 0.15) 0%, rgba(234, 88, 12, 0.1) 100%);
    border-color: #ea580c;
    box-shadow: 0 4px 20px rgba(234, 88, 12, 0.2);
}

.leaderboard-row.podium-3rd::before {
    content: '🥉';
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 28px;
    animation: bounce 2s ease-in-out 0.4s infinite;
}

.leaderboard-row.podium-1st .leaderboard-rank,
.leaderboard-row.podium-2nd .leaderboard-rank,
.leaderboard-row.podium-3rd .leaderboard-rank {
    margin-left: 40px;
}

.leaderboard-row.podium-1st:hover,
.leaderboard-row.podium-2nd:hover,
.leaderboard-row.podium-3rd:hover {
    transform: translateX(8px) scale(1.03);
}

/* ===== BREAKDOWN BARS ===== */
.breakdown-container {
    margin-top: 24px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

body.dark .breakdown-container {
    background: #0f172a;
    border-color: #334155;
}

.breakdown-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 16px;
}

body.dark .breakdown-title {
    color: #f1f5f9;
}

.breakdown-bar-item {
    margin-bottom: 16px;
}

.breakdown-bar-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
}

body.dark .breakdown-bar-label {
    color: #e2e8f0;
}

.breakdown-bar-percentage {
    font-weight: 700;
    color: var(--primary-600);
}

body.dark .breakdown-bar-percentage {
    color: var(--primary-400);
}

.breakdown-bar-track {
    width: 100%;
    height: 32px;
    background: var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
}

body.dark .breakdown-bar-track {
    background: #1e293b;
}

.breakdown-bar-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    border-radius: var(--radius-lg);
    transition: width 0.6s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 10px;
    color: white;
    font-size: 13px;
    font-weight: 600;
    min-width: 40px;
}

.breakdown-bar-fill.correct {
    background: linear-gradient(135deg, var(--green-500) 0%, var(--green-600) 100%);
}

.breakdown-bar-fill.incorrect {
    background: linear-gradient(135deg, var(--gray-400) 0%, var(--gray-500) 100%);
}

/* ===== WORD CLOUD ===== */
.word-cloud-container {
    margin-top: 24px;
    padding: 30px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    min-height: 200px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

body.dark .word-cloud-container {
    background: #0f172a;
    border-color: #334155;
}

.word-cloud-term {
    display: inline-block;
    padding: 8px 16px;
    background: var(--primary-50);
    color: var(--primary-700);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all 0.3s ease;
    border: 1px solid var(--primary-200);
}

body.dark .word-cloud-term {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-400);
    border-color: #3b82f6;
}

.word-cloud-term:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.word-cloud-empty {
    color: var(--gray-400);
    font-style: italic;
    text-align: center;
    width: 100%;
}

body.dark .word-cloud-empty {
    color: #64748b;
}

/* ===== CONFETTI CANVAS ===== */
#confettiCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
}

/* ===== FEEDBACK FORM ===== */
.feedback-form-container {
    margin-top: 32px;
    padding: 24px;
    background: var(--gray-50);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
}

body.dark .feedback-form-container {
    background: #0f172a;
    border-color: #334155;
}

.feedback-form-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 16px;
    text-align: center;
}

body.dark .feedback-form-title {
    color: #f1f5f9;
}

.feedback-rating {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.feedback-rating-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid var(--gray-300);
    background: #ffffff;
    color: var(--gray-600);
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.dark .feedback-rating-btn {
    background: #1e293b;
    border-color: #475569;
    color: #94a3b8;
}

.feedback-rating-btn:hover {
    transform: scale(1.1);
    border-color: var(--primary-400);
}

.feedback-rating-btn.selected {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: white;
    transform: scale(1.15);
}

.feedback-comment {
    width: 100%;
    min-height: 100px;
    padding: 14px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: #ffffff;
    color: var(--gray-800);
    font-family: inherit;
    font-size: 15px;
    resize: vertical;
    margin-bottom: 16px;
}

body.dark .feedback-comment {
    background: #1e293b;
    border-color: #475569;
    color: #e2e8f0;
}

.feedback-comment:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.feedback-submit-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-800) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s ease;
}

.feedback-submit-btn:hover {
    background: linear-gradient(135deg, var(--primary-700) 0%, var(--primary-900) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.feedback-submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.feedback-success {
    text-align: center;
    padding: 20px;
    color: var(--green-600);
    font-weight: 500;
}

body.dark .feedback-success {
    color: var(--green-500);
}

/* ===== LEADERBOARD STYLES ===== */
.leaderboard-container {
    margin-top: 24px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px) saturate(180%);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    animation: fadeInUp 0.6s ease-out;
}

body.dark .leaderboard-container {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(148, 163, 184, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.leaderboard-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 20px;
    text-align: center;
    letter-spacing: -0.3px;
}

body.dark .leaderboard-title {
    color: #f1f5f9;
}

.leaderboard-row {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    animation: slideInLeft 0.4s ease-out backwards;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.leaderboard-row:nth-child(1) { animation-delay: 0.05s; }
.leaderboard-row:nth-child(2) { animation-delay: 0.1s; }
.leaderboard-row:nth-child(3) { animation-delay: 0.15s; }
.leaderboard-row:nth-child(4) { animation-delay: 0.2s; }
.leaderboard-row:nth-child(5) { animation-delay: 0.25s; }

body.dark .leaderboard-row {
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(148, 163, 184, 0.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.leaderboard-row:hover {
    transform: translateX(8px) scale(1.02);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.15);
    border-color: rgba(102, 126, 234, 0.3);
}

body.dark .leaderboard-row:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    border-color: rgba(167, 139, 250, 0.3);
}

.leaderboard-rank {
    font-size: 18px;
    font-weight: 800;
    color: var(--gray-600);
    min-width: 50px;
    text-align: center;
}

body.dark .leaderboard-rank {
    color: #94a3b8;
}

.leaderboard-name {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-800);
    letter-spacing: -0.2px;
}

body.dark .leaderboard-name {
    color: #e2e8f0;
}

.leaderboard-score {
    font-size: 18px;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

body.dark .leaderboard-score {
    background: linear-gradient(135deg, #a78bfa 0%, #ec4899 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}