/* ===================================================
   بوابة التربية الصحية والبدنية (1-1) - الصف الأول ثانوي
   الوحدة الثالثة: عناصر الغذاء - نسب الغذاء الموصى بها - روح المبادرة الإيجابية في النشاط البدني
   نظام المسارات - المملكة العربية السعودية • وزارة التعليم
   إعداد وتصميم: أ / ثامر بن محمد العمير • إدارة: أ / أحمد مصلح الشمراني
   المدرسة المركزية بالمنطقة الشرقية
   =================================================== */

:root {
    --primary: #059669;
    --primary-dark: #047857;
    --primary-light: #34d399;
    --secondary: #d97706;
    --secondary-dark: #b45309;
    --secondary-light: #fbbf24;
    --accent: #0284c7;
    --accent-light: #38bdf8;
    --accent-red: #ef4444;
    --accent-purple: #8b5cf6;

    /* Nutrition Specific Colors */
    --carb-color: #f59e0b;
    --protein-color: #ef4444;
    --fat-color: #8b5cf6;
    --vitamin-color: #10b981;
    --mineral-color: #06b6d4;
    --water-color: #3b82f6;

    /* Dark Mode (Default) */
    --bg-main: #061e14;
    --bg-surface: #0a2e1f;
    --bg-card: #0f3d2a;
    --bg-card-hover: #144f37;
    --bg-alt: #082418;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-highlight: rgba(52, 211, 153, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #a7f3d0;
    --text-muted: #6ee7b7;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
    --card-glow: 0 0 25px rgba(16, 185, 129, 0.25);
    --nav-bg: rgba(6, 30, 20, 0.94);

    --font-main: 'Cairo', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-full: 9999px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-main: #f0fdf4;
    --bg-surface: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f0fdf4;
    --bg-alt: #f8fafc;
    --border-color: #d1fae5;
    --border-highlight: rgba(5, 150, 105, 0.5);
    --text-primary: #064e3b;
    --text-secondary: #047857;
    --text-muted: #059669;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.07), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --card-glow: 0 0 20px rgba(5, 150, 105, 0.15);
    --nav-bg: rgba(255, 255, 255, 0.94);
}

/* Base Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 85px;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.75;
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-light), var(--secondary-light), var(--accent-light));
    width: 0%;
    z-index: 1000;
    transition: width 0.1s ease-out;
}

/* Layout Containers */
.container {
    width: 90%;
    max-width: 1240px;
    margin: 0 auto;
}

/* Typography & Badges */
h1, h2, h3, h4, h5 {
    color: var(--text-primary);
    font-weight: 800;
    line-height: 1.3;
}

p {
    color: var(--text-secondary);
    font-size: 0.98rem;
}

.gradient-text {
    background: linear-gradient(135deg, #34d399, #fbbf24, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 800;
}

.badge-nutrition {
    background: rgba(16, 185, 129, 0.18);
    color: var(--primary-light);
    border: 1px solid rgba(52, 211, 153, 0.35);
}

.badge-initiative {
    background: rgba(245, 158, 11, 0.18);
    color: var(--secondary-light);
    border: 1px solid rgba(251, 191, 36, 0.35);
}

.badge-water {
    background: rgba(59, 130, 246, 0.18);
    color: var(--accent-light);
    border: 1px solid rgba(56, 189, 248, 0.35);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(5, 150, 105, 0.35);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(5, 150, 105, 0.5);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(217, 119, 6, 0.35);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(217, 119, 6, 0.5);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), #0369a1);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(2, 132, 199, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    background: var(--bg-surface);
    border-color: var(--border-highlight);
}

.btn-icon {
    width: 42px;
    height: 42px;
    padding: 0;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 1.15rem;
    transition: all var(--transition-fast);
}

.btn-icon:hover {
    border-color: var(--primary-light);
    transform: scale(1.05);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 999;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.4);
    font-size: 1.4rem;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.logo-badge {
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    background: rgba(52, 211, 153, 0.12);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Sound Button in Nav */
.sound-toggle-btn {
    width: auto;
    padding: 0 12px;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 700;
}

/* Hero Section */
.hero-section {
    padding: 65px 0 40px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-glow {
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: 750px;
    height: 450px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.28) 0%, rgba(245, 158, 11, 0.18) 45%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 980px;
    margin: 0 auto;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 20px;
    background: rgba(16, 185, 129, 0.14);
    border: 1px solid rgba(52, 211, 153, 0.35);
    border-radius: var(--radius-full);
    font-size: 0.86rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 22px;
}

.tag-pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-light);
    box-shadow: 0 0 10px var(--primary-light);
    animation: pulseAnim 1.6s infinite ease-in-out;
}

@keyframes pulseAnim {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: 0.5; }
}

/* Teacher Official Credential Box */
.teacher-credential-box {
    background: linear-gradient(135deg, rgba(15, 61, 42, 0.95), rgba(6, 30, 20, 0.95));
    border: 1px solid rgba(52, 211, 153, 0.35);
    border-radius: var(--radius-lg);
    padding: 24px 30px;
    max-width: 980px;
    margin: 0 auto 34px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(16, 185, 129, 0.2);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;
    text-align: right;
    position: relative;
    overflow: hidden;
}

.teacher-avatar-emblem {
    font-size: 3.2rem;
    background: rgba(52, 211, 153, 0.14);
    border: 1px solid rgba(52, 211, 153, 0.35);
    width: 78px;
    height: 78px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.teacher-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.teacher-role-tag {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--secondary-light);
}

.teacher-name-title {
    font-size: 1.65rem;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -0.3px;
}

.teacher-school-desc {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.86rem;
    color: var(--text-secondary);
}

.school-director-badge {
    background: rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 10px 18px;
    border-radius: var(--radius-md);
    text-align: center;
    backdrop-filter: blur(6px);
}

.director-label {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 700;
}

.director-name {
    display: block;
    font-size: 0.98rem;
    font-weight: 800;
    color: var(--secondary-light);
}

.hero-title {
    font-size: 2.7rem;
    font-weight: 900;
    margin-bottom: 16px;
    line-height: 1.25;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 860px;
    margin: 0 auto 30px;
    line-height: 1.8;
}

.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 30px;
}

/* Quick Metrics Bar */
.nutrition-metrics-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin: 35px 0 50px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: right;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--card-shadow);
    transition: all var(--transition-fast);
}

.metric-card:hover {
    border-color: var(--border-highlight);
    transform: translateY(-4px);
    box-shadow: var(--card-shadow), var(--card-glow);
}

.metric-icon-box {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.7rem;
    flex-shrink: 0;
}

.metric-icon-box.green { background: rgba(16, 185, 129, 0.18); border: 1px solid rgba(52, 211, 153, 0.35); }
.metric-icon-box.orange { background: rgba(245, 158, 11, 0.18); border: 1px solid rgba(251, 191, 36, 0.35); }
.metric-icon-box.blue { background: rgba(59, 130, 246, 0.18); border: 1px solid rgba(56, 189, 248, 0.35); }
.metric-icon-box.purple { background: rgba(139, 92, 246, 0.18); border: 1px solid rgba(167, 139, 250, 0.35); }

.metric-data h4 {
    font-size: 1.45rem;
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.2;
}

.metric-data span {
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 700;
}

/* Content Sections */
.content-section {
    padding: 60px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 45px;
}

.section-tag {
    display: inline-block;
    font-size: 0.84rem;
    font-weight: 800;
    color: var(--primary-light);
    background: rgba(16, 185, 129, 0.14);
    padding: 4px 16px;
    border-radius: var(--radius-full);
    border: 1px solid rgba(52, 211, 153, 0.3);
    margin-bottom: 12px;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 12px;
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* 1. Macro Nutrients Flip Cards Section */
.nutrients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.flip-card {
    background-color: transparent;
    perspective: 1000px;
    height: 380px;
    cursor: pointer;
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: right;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow);
}

.flip-card.flipped .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: var(--radius-lg);
    padding: 26px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.flip-card-front {
    background: var(--bg-card);
    justify-content: space-between;
}

.flip-card-back {
    background: var(--bg-surface);
    border-color: var(--border-highlight);
    transform: rotateY(180deg);
    overflow-y: auto;
}

.flip-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
}

.flip-card-icon {
    font-size: 2.8rem;
}

.nutrient-calorie-badge {
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 800;
}

.flip-card-title {
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: #ffffff;
}

.flip-card-summary {
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.flip-hint {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--primary-light);
    font-weight: 700;
    margin-top: auto;
}

.flip-back-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--secondary-light);
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

.back-points-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.back-points-list li {
    font-size: 0.88rem;
    color: var(--text-secondary);
    position: relative;
    padding-right: 18px;
}

.back-points-list li::before {
    content: '•';
    position: absolute;
    right: 0;
    color: var(--primary-light);
    font-size: 1.3rem;
    line-height: 1;
}

/* 2. Interactive Nutrition Plate & Ratio Simulator */
.plate-simulator-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px;
    box-shadow: var(--card-shadow);
    margin-bottom: 40px;
}

.plate-simulator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px;
    align-items: center;
}

.plate-visual-box {
    text-align: center;
    position: relative;
    padding: 20px;
}

.plate-diagram-svg {
    max-width: 340px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.4));
    transition: transform var(--transition-normal);
}

.plate-diagram-svg:hover {
    transform: scale(1.02);
}

.plate-labels-overlay {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.plate-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    padding: 4px 10px;
    background: var(--bg-surface);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
}

.legend-color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.plate-controls-box {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.ratio-slider-group {
    background: var(--bg-surface);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.slider-label-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.92rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.slider-input {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
}

.slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-light);
    cursor: pointer;
    box-shadow: 0 0 10px var(--primary-light);
}

.ratio-feedback-card {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.35);
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* 3. Student Calorie & Hydration Calculator */
.calc-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.calc-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--card-shadow);
}

.calc-box-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 18px;
    color: var(--text-primary);
}

.input-field-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.input-label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.form-input, .form-select {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 11px 16px;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: all var(--transition-fast);
}

.form-input:focus, .form-select:focus {
    border-color: var(--primary-light);
    box-shadow: 0 0 12px rgba(52, 211, 153, 0.25);
}

.calc-result-panel {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px;
    margin-top: 18px;
    text-align: center;
}

.calc-result-big {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--primary-light);
    line-height: 1.1;
    margin-bottom: 6px;
}

.calc-result-breakdown {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-color);
}

.breakdown-item {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.breakdown-item strong {
    display: block;
    font-size: 0.96rem;
    color: var(--text-primary);
    margin-top: 2px;
}

/* 4. Positive Initiative Scenarios Lab */
.initiative-lab-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px;
    box-shadow: var(--card-shadow);
    margin-bottom: 40px;
}

.scenario-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 22px;
    transition: all var(--transition-fast);
}

.scenario-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.scenario-badge {
    background: rgba(245, 158, 11, 0.15);
    border: 1px solid rgba(251, 191, 36, 0.35);
    color: var(--secondary-light);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 800;
}

.scenario-situation {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.scenario-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.scenario-option-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    text-align: right;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 12px;
}

.scenario-option-btn:hover {
    border-color: var(--secondary-light);
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.scenario-option-btn.correct {
    border-color: var(--primary-light);
    background: rgba(16, 185, 129, 0.2);
    color: #ffffff;
}

.scenario-option-btn.wrong {
    border-color: var(--accent-red);
    background: rgba(239, 68, 68, 0.18);
    color: #ffffff;
}

.scenario-feedback {
    margin-top: 14px;
    padding: 14px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    display: none;
}

.scenario-feedback.show {
    display: block;
}

.scenario-feedback.correct-bg {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(52, 211, 153, 0.4);
    color: #ffffff;
}

.scenario-feedback.wrong-bg {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #ffffff;
}

/* 5. Matching Game */
.matching-game-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--card-shadow);
    margin-bottom: 40px;
}

.matching-game-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-top: 20px;
}

.matching-column {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.match-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    cursor: pointer;
    font-size: 0.92rem;
    font-weight: 700;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 10px;
    user-select: none;
}

.match-item:hover {
    border-color: var(--border-highlight);
    transform: translateX(-4px);
}

.match-item.selected {
    border-color: var(--secondary-light);
    background: rgba(245, 158, 11, 0.2);
    box-shadow: 0 0 14px rgba(251, 191, 36, 0.3);
}

.match-item.matched {
    border-color: var(--primary-light);
    background: rgba(16, 185, 129, 0.2);
    cursor: default;
    opacity: 0.85;
}

/* 6. Checkpoints */
.checkpoint-box {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(2, 132, 199, 0.1));
    border: 1px solid rgba(52, 211, 153, 0.35);
    border-radius: var(--radius-lg);
    padding: 26px;
    margin: 40px 0;
    position: relative;
}

.checkpoint-badge {
    position: absolute;
    top: -14px;
    right: 25px;
    background: var(--primary);
    color: #ffffff;
    padding: 4px 16px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 800;
    box-shadow: 0 4px 10px rgba(5, 150, 105, 0.4);
}

.checkpoint-q {
    font-size: 1.1rem;
    font-weight: 800;
    margin: 8px 0 16px;
}

.checkpoint-answers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 10px;
}

.cp-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.cp-btn:hover {
    border-color: var(--primary-light);
    color: var(--text-primary);
}

.cp-feedback {
    margin-top: 14px;
    font-size: 0.9rem;
    font-weight: 700;
    display: none;
}

/* 7. Video Library */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
}

.video-responsive {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    background: #000;
}

.video-responsive iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.video-card-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.video-card-title {
    font-size: 1.15rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.video-card-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
}

/* 8. Standardized 20-Question Quiz */
.quiz-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px;
    box-shadow: var(--card-shadow);
    margin-bottom: 40px;
}

.quiz-filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}

.quiz-pill {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: 0.86rem;
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quiz-pill.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.4);
}

.quiz-progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--bg-surface);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 25px;
}

.quiz-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(to right, var(--primary), var(--secondary-light));
    transition: width 0.3s ease;
}

.question-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 20px;
    transition: all var(--transition-fast);
}

.q-number-tag {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 8px;
    display: block;
}

.q-text {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.6;
}

.q-options-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.q-option-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    text-align: right;
    font-size: 0.94rem;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.q-option-btn:hover {
    border-color: var(--primary-light);
    color: var(--text-primary);
}

.q-option-btn.selected-correct {
    background: rgba(16, 185, 129, 0.25);
    border-color: var(--primary-light);
    color: #ffffff;
}

.q-option-btn.selected-wrong {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--accent-red);
    color: #ffffff;
}

.q-explanation {
    margin-top: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    display: none;
    line-height: 1.6;
}

.q-explanation.show {
    display: block;
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(52, 211, 153, 0.35);
    color: var(--text-primary);
}

.quiz-scoreboard-box {
    text-align: center;
    padding: 30px;
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-top: 30px;
    display: none;
}

.quiz-score-num {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--primary-light);
}

/* 9. Printable Student Rubric */
.rubric-print-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 35px;
    box-shadow: var(--card-shadow);
    margin-bottom: 50px;
}

.rubric-official-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.rubric-school-meta {
    text-align: right;
}

.rubric-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 25px;
}

.rubric-table th, .rubric-table td {
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    text-align: right;
    font-size: 0.9rem;
}

.rubric-table th {
    background: var(--bg-surface);
    color: var(--primary-light);
    font-weight: 800;
}

/* Presentation Deck Overlay */
.presentation-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #03140e;
    z-index: 99999;
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.presentation-overlay.active {
    display: flex;
}

.pres-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: rgba(6, 30, 20, 0.9);
    border-bottom: 1px solid rgba(52, 211, 153, 0.2);
}

.pres-viewport {
    flex: 1;
    overflow-y: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.pres-slide {
    display: none;
    width: 100%;
    max-width: 960px;
    animation: fadeInSlide 0.35s ease;
}

.pres-slide.active {
    display: block;
}

@keyframes fadeInSlide {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-content-card {
    background: #092c1e;
    border: 1px solid rgba(52, 211, 153, 0.3);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.slide-badge {
    display: inline-block;
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid rgba(52, 211, 153, 0.4);
    color: var(--primary-light);
    padding: 4px 14px;
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.slide-title {
    font-size: 2.1rem;
    font-weight: 900;
    color: #ffffff;
    margin-bottom: 22px;
}

.slide-points-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.slide-points-list li {
    font-size: 1.05rem;
    color: #e2e8f0;
    line-height: 1.7;
    position: relative;
    padding-right: 24px;
}

.slide-points-list li::before {
    content: '✔';
    position: absolute;
    right: 0;
    color: var(--primary-light);
    font-weight: 900;
}

.pres-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px;
    background: rgba(6, 30, 20, 0.9);
    border-top: 1px solid rgba(52, 211, 153, 0.2);
}

/* Toast Notification */
.portal-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(6, 30, 20, 0.95);
    color: #ffffff;
    border: 1px solid var(--primary-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px rgba(16, 185, 129, 0.25);
    padding: 14px 24px;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 0.92rem;
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 10px;
    backdrop-filter: blur(12px);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.35s ease;
    opacity: 0;
    pointer-events: none;
}

.portal-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* Footer */
.footer {
    background: var(--bg-alt);
    border-top: 1px solid var(--border-color);
    padding: 50px 0 24px;
    margin-top: 60px;
}

.footer-container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-info {
    max-width: 600px;
}

.footer-vision {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 14px 20px;
    border-radius: var(--radius-md);
}

/* Print Styles */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
    }
    .navbar, .hero-section, .nutrition-metrics-bar, .plate-simulator-wrapper,
    .calc-card-grid, .initiative-lab-container, .matching-game-card, .video-grid,
    .quiz-wrapper, .presentation-overlay, .scroll-progress, .portal-toast, .footer {
        display: none !important;
    }
    .rubric-print-container {
        display: block !important;
        box-shadow: none !important;
        border: none !important;
        padding: 0 !important;
    }
}

/* Responsive */
@media (max-width: 900px) {
    .plate-simulator-grid {
        grid-template-columns: 1fr;
    }
    .matching-game-grid {
        grid-template-columns: 1fr;
    }
    .teacher-credential-box {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .teacher-avatar-emblem {
        margin: 0 auto;
    }
    .hero-title {
        font-size: 2.1rem;
    }
}