/* style.css - التنسيق الفخم لملف منصة المهندس أحمد علي للبرمجة والذكاء الاصطناعي */

@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;600;700;800&family=Outfit:wght@300;400;600;700&display=swap');

:root {
    --bg-dark: #07030d;
    --bg-card: rgba(20, 11, 33, 0.7);
    --bg-card-hover: rgba(32, 17, 54, 0.85);
    --primary: #8e44ad;
    --primary-glow: rgba(142, 68, 173, 0.5);
    --secondary: #00f2fe;
    --secondary-glow: rgba(0, 242, 254, 0.4);
    --success: #1dac62;
    --success-glow: rgba(29, 172, 98, 0.4);
    --danger: #ef4444;
    --text-main: #f5f2fa;
    --text-muted: #a69bb5;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(142, 68, 173, 0.4);
    --font-ar: 'Cairo', sans-serif;
    --font-en: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --header-bg: rgba(7, 3, 13, 0.8);
    --hero-bg: radial-gradient(circle at top right, rgba(142, 68, 173, 0.2), transparent 45%), radial-gradient(circle at bottom left, rgba(0, 242, 254, 0.1), transparent 40%);
    --body-bg: var(--bg-dark);
}

body.light-mode {
    --bg-dark: #f7f7fc;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-hover: rgba(255, 255, 255, 0.95);
    --primary: #7c3aed;
    --primary-glow: rgba(124, 58, 237, 0.2);
    --secondary: #0891b2;
    --secondary-glow: rgba(8, 145, 178, 0.2);
    --text-main: #1f2937;
    --text-muted: #64748b;
    --border-color: rgba(15, 23, 42, 0.08);
    --border-hover: rgba(124, 58, 237, 0.25);
    --header-bg: rgba(255, 255, 255, 0.85);
    --hero-bg: linear-gradient(135deg, #fdf2f8 0%, #eef2ff 100%);
    --body-bg: #f8fafc;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-ar);
}

body {
    background-color: var(--body-bg);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
    direction: rtl;
    transition: var(--transition);
}

/* شريط التمرير */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--secondary);
}

/* التنسيقات العامة */
a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

button, input, select, textarea {
    font-family: var(--font-ar);
    outline: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: var(--transition);
}
.glass-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 8px 32px 0 rgba(142, 68, 173, 0.15);
}

/* أزرار مضيئة */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #6c3483);
    color: #fff;
    box-shadow: 0 4px 15px var(--primary-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(142, 68, 173, 0.8);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--secondary);
    color: var(--secondary);
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.1);
}
.btn-secondary:hover {
    background: var(--secondary);
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--secondary-glow);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(142, 68, 173, 0.1);
}

.btn-danger {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(190, 24, 24, 0.95));
    color: #fff;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.25);
}
.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.45);
}

/* شريط التنقل */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 0;
    background: var(--header-bg);
}

header .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.5px;
}
.logo img,
.logo .header-logo {
    width: 100px;
    height: auto;
    display: block;
    border-radius: 12px;
}
.logo span {
    color: var(--secondary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    font-weight: 600;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--secondary);
    text-shadow: 0 0 10px var(--secondary-glow);
}

.nav-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary);
    background: rgba(142, 68, 173, 0.1);
}

.theme-toggle-icon {
    font-size: 16px;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1100;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-main);
    border-radius: 2px;
    transition: var(--transition);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 3, 13, 0.95);
    z-index: 1050;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-overlay a {
    font-size: 24px;
    font-weight: 700;
}

/* Bottom Navigation (App feel) */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-color);
    padding: 10px 0;
    z-index: 1000;
    justify-content: space-around;
    align-items: center;
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
}

.bottom-nav-item.active {
    color: var(--secondary);
}

.bottom-nav-item svg {
    width: 20px;
    height: 20px;
}

body.light-mode header .logo {
    color: #0f172a !important;
}

/* قسم البطل (Hero) */
.hero {
    position: relative;
    padding: 180px 0 100px 0;
    background: var(--hero-bg);
    min-height: 95vh;
    display: flex;
    align-items: center;
}

.instructions-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 2000;
}

.instructions-modal.open {
    display: flex;
}

.instructions-modal-box {
    background: rgba(7, 3, 13, 0.95);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    padding: 30px;
    max-width: 560px;
    width: 100%;
    color: #f5f2fa;
}

.instructions-modal-box h3 {
    font-size: 24px;
    margin-bottom: 18px;
}

.instructions-modal-box ul {
    list-style: none;
    padding: 0;
    margin: 0 0 20px;
}

.instructions-modal-box ul li {
    margin-bottom: 12px;
    line-height: 1.6;
}

.instructions-modal-box p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.instructions-modal-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
    align-items: center;
}

.hero-content h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-content h1 span {
    background: linear-gradient(to left, var(--secondary), #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 35px;
    max-width: 600px;
}

.hero-extra-links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.hero-extra-links .btn {
    min-width: 180px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
    margin-inline-end: 8px;
    font-size: 14px;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: #fff;
    text-decoration: none;
    transition: var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
    background: rgba(83, 63, 211, 0.16);
    border-color: var(--primary);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card-panel {
    position: relative;
    padding: 24px;
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.card-panel h3 {
    margin-bottom: 18px;
    font-size: 20px;
}

.card-meta {
    display: grid;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

.card-meta span {
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.card-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.card-actions .btn {
    min-width: 150px;
}

.page-hero .hero-visual img,
.page-hero .hero-visual video {
    min-height: 320px;
}

@media (max-width: 980px) {
    .hero-extra-links {
        justify-content: flex-start;
    }
}

.hero-visual {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-color);
    min-height: 360px;
}

.hero-visual img,
.page-hero .hero-visual img,
.dash-hero-visual img,
.hero-visual video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: var(--transition);
}

/* تنسيقات إطار صور الكورسات المحدثة لعدم قص الجزء السفلي */
.course-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.course-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    background-color: #0b0614;
}

.course-img img,
img.course-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center bottom;
    display: block;
    transition: var(--transition);
}

.hero-visual:hover img,
.dash-hero-visual:hover img,
.course-img:hover,
.course-img:hover img {
    transform: scale(1.02);
}

/* السنوات الدراسية */
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 10px;
}
.section-title h2 span {
    color: var(--primary);
}
.section-title p {
    color: var(--text-muted);
    font-size: 16px;
}

.years-section {
    padding: 80px 0;
}

.years-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px;
    align-items: stretch;
}

.year-card {
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.year-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary);
}

.year-card.second {
    padding: 18px;
    margin-top: 0;
}

.year-card.second::before {
    background: var(--secondary);
}

.year-card h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.year-card p {
    color: var(--text-muted);
    margin-bottom: 25px;
}

.year-features {
    list-style: none;
    margin-bottom: 25px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.year-features li {
    font-size: 14px;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
}

.year-features li::before {
    content: '✦';
    color: var(--secondary);
}

/* صفحة التوثيق والدخول */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 20px;
    background: radial-gradient(circle at center, rgba(142, 68, 173, 0.15), transparent 60%);
}

.auth-card {
    width: 100%;
    max-width: 500px;
}

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 25px;
}

.auth-tab {
    flex: 1;
    text-align: center;
    padding: 12px;
    cursor: pointer;
    font-weight: 700;
    color: var(--text-muted);
    transition: var(--transition);
    border-bottom: 2px solid transparent;
}

.auth-tab.active {
    color: var(--secondary);
    border-color: var(--secondary);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 8px;
    color: #fff;
    font-size: 15px;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 10px rgba(142, 68, 173, 0.3);
}

select.form-control option {
    background: var(--bg-dark);
    color: #fff;
}

/* لوحة تحكم الطالب (Dashboard) */
.dashboard-layout {
    padding-top: 100px;
    min-height: 100vh;
    padding-bottom: 80px; /* Space for bottom nav */
}

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

.dash-header-content {
    max-width: 640px;
}

.dash-hero-visual {
    max-width: 420px;
    width: 100%;
    border-radius: 28px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

.dash-hero-visual img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

@media (max-width: 980px) {
    .dash-header {
        flex-direction: column;
        align-items: stretch;
    }

    .dash-hero-visual {
        max-width: 100%;
    }
}

.student-info {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    flex-wrap: wrap;
}

.student-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.student-grade-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.student-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    border: 2px solid var(--secondary);
}

.dash-grid {
    display: block;
    gap: 30px;
}

.courses-scroll {
    overflow: visible;
    direction: ltr;
    padding-bottom: 0;
    margin-bottom: 30px;
}

.dashboard-bottom-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.sidebar-panel {
    display: none;
}

.wallet-card {
    position: relative;
    background: linear-gradient(135deg, rgba(142, 68, 173, 0.4), rgba(0, 242, 254, 0.2));
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 24px;
}

.wallet-card, .glass-card {
    overflow-wrap: break-word;
    word-break: break-word;
}

.recharge-input-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.recharge-input-group input {
    flex: 1;
    min-width: 0;
}

.recharge-input-group button {
    white-space: nowrap;
}

@media (max-width: 980px) {
    .header-recharge {
        flex-direction: column;
        align-items: stretch;
    }
}

.exam-score-item,
.certificate-item {
    min-width: 0;
    word-break: break-word;
}

.certificate-item {
    flex-wrap: wrap;
}

.exam-score-item div {
    min-width: 0;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(280px, 1fr));
    gap: 20px;
}

@media (max-width: 1200px) {
    .courses-grid {
        grid-template-columns: repeat(2, minmax(280px, 1fr));
    }
}

@media (max-width: 980px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .recharge-input-group {
        flex-direction: column;
    }
}

.wallet-balance {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin: 10px 0;
    font-family: var(--font-en);
}
.wallet-balance span {
    font-size: 16px;
    font-family: var(--font-ar);
    color: var(--secondary);
    margin-right: 5px;
}

/* تبويبات لوحة التحكم */
.dash-tabs {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.dash-tab-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    transition: var(--transition);
}

.dash-tab-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
}

.course-card h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 20px;
}

.course-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    font-weight: 800;
    font-size: 20px;
    color: var(--secondary);
    font-family: var(--font-en);
}
.course-price::after {
    content: ' ج.م';
    font-size: 13px;
    font-family: var(--font-ar);
}

/* قاعة الدراسة والمحاضرات (Classroom) */
.classroom-grid {
    display: grid;
    grid-template-columns: 1.4fr 0.6fr;
    gap: 30px;
    padding-top: 100px;
    min-height: 100vh;
}

.video-player-container {
    position: relative;
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 16/9;
    border: 1px solid var(--border-color);
}

.video-player-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* علامة مائية عائمة لمنع التصوير */
.watermark {
    position: absolute;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.12);
    font-family: var(--font-en);
    pointer-events: none;
    user-select: none;
    z-index: 10;
    animation: moveWatermark 15s infinite linear;
}

@keyframes moveWatermark {
    0% { top: 10%; left: 10%; }
    25% { top: 80%; left: 30%; }
    50% { top: 20%; left: 70%; }
    75% { top: 60%; left: 80%; }
    100% { top: 10%; left: 10%; }
}

.lecture-info-panel {
    margin-top: 20px;
}

.lecture-info-panel h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 10px;
}

.lecture-list-card {
    height: calc(100vh - 160px);
    display: flex;
    flex-direction: column;
}

.lecture-list-header {
    font-size: 18px;
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 15px;
}

.lecture-items {
    overflow-y: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lecture-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}
.lecture-item:hover, .lecture-item.active {
    background: rgba(142, 68, 173, 0.1);
    border-color: var(--primary);
}

.lecture-item-title {
    font-weight: 600;
    font-size: 14px;
}

.lecture-item-duration {
    font-size: 12px;
    color: var(--text-muted);
}

/* واجهة الامتحانات */
.exam-layout {
    padding-top: 120px;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.exam-card {
    width: 100%;
    max-width: 800px;
}

.exam-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 25px;
}

.timer {
    font-family: var(--font-en);
    font-size: 20px;
    font-weight: 700;
    color: var(--secondary);
    background: rgba(0, 242, 254, 0.1);
    padding: 5px 15px;
    border-radius: 20px;
    border: 1px solid var(--secondary);
}

.question-text {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 25px;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
}

.option-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 15px 20px;
    border-radius: 8px;
    color: var(--text-main);
    text-align: right;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.option-btn:hover {
    border-color: var(--primary);
    background: rgba(142, 68, 173, 0.05);
}

.option-btn.selected {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 15px var(--primary-glow);
}

.exam-nav {
    display: flex;
    justify-content: space-between;
}

/* تذييل الصفحة */
footer {
    background: #050208;
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    text-align: center;
    color: var(--text-muted);
    padding-bottom: 100px; /* Space for bottom nav */
}
footer .logo {
    justify-content: center;
    margin-bottom: 15px;
}
footer .social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}
footer .social-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    padding: 0;
}
footer .social-icon:hover {
    color: var(--secondary);
    border-color: var(--secondary);
    box-shadow: 0 0 10px var(--secondary-glow);
    transform: scale(1.08);
}

/* لوحة تحكم المشرفين (Admin) */
.page-shell {
    padding-top: 120px;
    padding-bottom: 50px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.stats-grid h3 {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-number {
    font-size: 32px;
    font-weight: 800;
    color: var(--secondary);
}

.pending-list {
    display: grid;
    gap: 16px;
}

.pending-student-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 16px 18px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
}

.pending-student-card h4 {
    margin-bottom: 6px;
}

.pending-student-card p {
    color: var(--text-muted);
    font-size: 14px;
}

.pending-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.admin-card-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.admin-summary-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
}

.admin-summary-box h5 {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 8px;
}

.admin-summary-box p {
    font-size: 28px;
    font-weight: 800;
    color: var(--secondary);
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.admin-table th, .admin-table td {
    padding: 12px 15px;
    text-align: right;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    font-weight: 700;
    color: var(--text-muted);
}

.admin-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}
.badge-grade {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    white-space: nowrap;
    max-width: fit-content;
}
.badge-success { background: rgba(29, 172, 98, 0.15); color: #2ecc71; }
.badge-danger { background: rgba(239, 68, 68, 0.15); color: #ff7675; }

/* التجاوب للهواتف */
@media (max-width: 992px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    .dash-grid {
        grid-template-columns: 1fr;
    }
    .classroom-grid {
        grid-template-columns: 1fr;
    }
    .lecture-list-card {
        height: auto;
    }
    .dashboard-bottom-cards {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hamburger {
        display: flex;
    }
    .bottom-nav {
        display: flex;
    }
    .nav-actions {
        display: none;
    }
    .years-grid {
        grid-template-columns: 1fr;
    }
    .courses-grid {
        grid-template-columns: 1fr;
    }
    header .logo {
        font-size: 18px;
    }
    header .logo img {
        width: 80px;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .hero {
        padding: 120px 0 60px 0;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
    }
    .hero-extra-links {
        flex-direction: column;
    }
    .hero-extra-links .btn {
        width: 100%;
    }
}