/* ============================================ */
/* المتغيرات الأساسية */
/* ============================================ */
:root {
    --primary: #1565c0;
    --primary-dark: #0d47a1;
    --primary-light: #42a5f5;
    --primary-lighter: #90caf9;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.15);
    --glass-bg-strong: rgba(255, 255, 255, 0.35);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-border-strong: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(21, 101, 192, 0.15);
    --glass-shadow-strong: 0 15px 40px rgba(21, 101, 192, 0.2);
    --text: #0d2137;
    --text-light: #1a3a5c;
    --text-muted: #546e7a;
    --bg-gradient: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 30%, #90caf9 60%, #64b5f6 100%);
    --card-bg: rgba(255, 255, 255, 0.25);
    --card-bg-hover: rgba(255, 255, 255, 0.4);
    --card-border: rgba(255, 255, 255, 0.5);
    --bottom-nav-bg: rgba(255, 255, 255, 0.75);
    --accent: #2196f3;
    --success: #4caf50;
    --success-dark: #388e3c;
    --success-light: rgba(76, 175, 80, 0.15);
    --danger: #f44336;
    --danger-dark: #c62828;
    --danger-light: rgba(244, 67, 54, 0.15);
    --warning: #ff9800;
    --warning-dark: #e65100;
    --warning-light: rgba(255, 152, 0, 0.15);
    --orange: #fb8c00;
    --purple: #8e24aa;
    --telegram: #229ED9;
    --youtube: #FF0000;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 5px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.15);
    --radius-xs: 8px;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 25px;
    --radius-xl: 30px;
    --radius-full: 50px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-primary: 'Cairo', 'Tajawal', sans-serif;
}

/* ============================================ */
/* إعادة تعيين */
/* ============================================ */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-primary); background: var(--bg-gradient); background-attachment: fixed; min-height: 100vh; color: var(--text); overflow-x: hidden; padding-bottom: 110px; position: relative; -webkit-font-smoothing: antialiased; line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: var(--transition-normal); }
img { max-width: 100%; height: auto; display: block; }
button { cursor: pointer; border: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }

/* شريط التمرير */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(21, 101, 192, 0.3); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: rgba(21, 101, 192, 0.5); }

/* خلفية متحركة */
.bg-animation { position: fixed; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; z-index: 0; overflow: hidden; }
.bg-blob { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.3; animation: floatBlob 15s ease-in-out infinite; }
.bg-blob:nth-child(1) { width: 400px; height: 400px; background: var(--primary-light); top: -100px; left: -100px; }
.bg-blob:nth-child(2) { width: 350px; height: 350px; background: #90caf9; top: 50%; right: -120px; animation-delay: -5s; animation-duration: 18s; }
.bg-blob:nth-child(3) { width: 300px; height: 300px; background: var(--primary); bottom: -100px; left: 30%; animation-delay: -10s; animation-duration: 20s; opacity: 0.2; }
.bg-blob:nth-child(4) { width: 200px; height: 200px; background: var(--accent); top: 20%; left: 50%; animation-delay: -7s; animation-duration: 12s; opacity: 0.25; }
@keyframes floatBlob { 0%,100%{transform:translate(0,0) scale(1)} 25%{transform:translate(50px,-50px) scale(1.1)} 50%{transform:translate(-30px,30px) scale(0.9)} 75%{transform:translate(-50px,-20px) scale(1.05)} }

/* الحاوية */
.app-container { position: relative; z-index: 1; max-width: 500px; margin: 0 auto; padding: 15px; }

/* الصفحات */
.page { display: none; animation: pageSlideIn 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.page.active { display: block; }
@keyframes pageSlideIn { from{opacity:0;transform:translateY(30px) scale(0.95)} to{opacity:1;transform:translateY(0) scale(1)} }

/* شريط التنقل السفلي */
.bottom-nav { position: fixed; bottom: 15px; left: 50%; transform: translateX(-50%); width: calc(100% - 30px); max-width: 470px; background: var(--bottom-nav-bg); backdrop-filter: blur(25px); -webkit-backdrop-filter: blur(25px); border: 1px solid var(--glass-border-strong); border-radius: var(--radius-lg); display: flex; justify-content: space-around; align-items: center; padding: 10px 5px; z-index: 1000; box-shadow: 0 10px 40px rgba(0,0,0,0.1), 0 0 0 1px rgba(255,255,255,0.5) inset; }
.nav-item { display: flex; flex-direction: column; align-items: center; gap: 4px; cursor: pointer; transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); padding: 8px 12px; border-radius: var(--radius-md); position: relative; color: var(--text-light); background: transparent; border: none; font-family: inherit; font-size: 10px; font-weight: 600; min-width: 50px; white-space: nowrap; }
.nav-item i { font-size: 20px; transition: all 0.3s ease; }
.nav-item.active { color: var(--primary-dark); background: rgba(21,101,192,0.15); transform: translateY(-8px); }
.nav-item.active i { transform: scale(1.2); text-shadow: 0 5px 15px rgba(21,101,192,0.4); }
.nav-item.active::before { content: ''; position: absolute; top: -5px; left: 50%; transform: translateX(-50%); width: 6px; height: 6px; background: var(--primary); border-radius: 50%; box-shadow: 0 0 15px var(--primary); }
.nav-item:active { transform: scale(0.9); }

/* ============================================ */
/* 🧬 اسم الأستاذ - DNA HELIX 3D */
/* ============================================ */
.dna-name-stage { position: relative; display: inline-block; margin: 15px 0 10px; perspective: 1200px; transform-style: preserve-3d; padding: 10px; }
.name-floor-glow { position: absolute; bottom: -5px; left: 50%; transform: translateX(-50%); width: 220px; height: 25px; background: radial-gradient(ellipse, rgba(33,150,243,0.5) 0%, rgba(33,150,243,0.2) 40%, transparent 70%); border-radius: 50%; z-index: 0; animation: floorGlowPulse 3s ease-in-out infinite; pointer-events: none; filter: blur(3px); }
@keyframes floorGlowPulse { 0%,100%{transform:translateX(-50%) scaleX(1);opacity:0.6} 50%{transform:translateX(-50%) scaleX(1.5);opacity:1} }
.dna-strand { position: absolute; top: 50%; left: 50%; width: 115%; height: 80px; transform: translate(-50%, -50%); pointer-events: none; z-index: 0; }
.dna-strand::before, .dna-strand::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 3px solid transparent; border-radius: 50%; animation: dnaStrandRotate 4s linear infinite; }
.dna-strand::before { border-top-color: rgba(33,150,243,0.7); border-bottom-color: rgba(33,150,243,0.7); box-shadow: 0 0 15px rgba(33,150,243,0.3); }
.dna-strand::after { border-left-color: rgba(13,71,161,0.6); border-right-color: rgba(13,71,161,0.6); animation-delay: -2s; width: 90%; height: 65%; top: 10px; left: 5%; box-shadow: 0 0 15px rgba(13,71,161,0.3); }
@keyframes dnaStrandRotate { 0%{transform:rotateX(0deg) rotateY(0deg) rotateZ(0deg)} 100%{transform:rotateX(360deg) rotateY(180deg) rotateZ(90deg)} }
.dna-node { position: absolute; width: 10px; height: 10px; background: var(--accent); border-radius: 50%; box-shadow: 0 0 10px var(--accent), 0 0 20px var(--accent), 0 0 40px rgba(33,150,243,0.8); animation: dnaNodeGlow 2s ease-in-out infinite; z-index: 1; }
.dna-node:nth-child(1) { top: -5px; left: 20%; animation-delay: 0s; }
.dna-node:nth-child(2) { bottom: -5px; right: 20%; animation-delay: -0.4s; }
.dna-node:nth-child(3) { top: -5px; right: 30%; animation-delay: -0.8s; }
.dna-node:nth-child(4) { bottom: -5px; left: 30%; animation-delay: -1.2s; }
.dna-node:nth-child(5) { top: 40%; left: -8px; animation-delay: -1.6s; }
.dna-node:nth-child(6) { top: 40%; right: -8px; animation-delay: -2s; }
@keyframes dnaNodeGlow { 0%,100%{transform:scale(0.8);opacity:0.6} 50%{transform:scale(1.8);opacity:1;box-shadow:0 0 15px var(--accent),0 0 30px var(--accent),0 0 60px rgba(33,150,243,1)} }
.name-particles-orbit { position: absolute; top: 50%; left: 50%; width: 130%; height: 100px; transform: translate(-50%, -50%); pointer-events: none; z-index: 1; }
.name-particle-orbit { position: absolute; font-size: 1.3rem; animation: particleOrbit3D 5s ease-in-out infinite; opacity: 0; filter: drop-shadow(0 0 8px rgba(33,150,243,0.6)); }
.name-particle-orbit:nth-child(1) { animation-delay: 0s; }
.name-particle-orbit:nth-child(2) { animation-delay: -0.6s; }
.name-particle-orbit:nth-child(3) { animation-delay: -1.2s; }
.name-particle-orbit:nth-child(4) { animation-delay: -1.8s; }
.name-particle-orbit:nth-child(5) { animation-delay: -2.4s; }
.name-particle-orbit:nth-child(6) { animation-delay: -3s; }
.name-particle-orbit:nth-child(7) { animation-delay: -3.6s; }
.name-particle-orbit:nth-child(8) { animation-delay: -4.2s; }
@keyframes particleOrbit3D { 0%{transform:translate(0,0) scale(0) rotateY(0deg);opacity:0} 8%{opacity:1} 35%{transform:translate(var(--px),var(--py)) scale(1.6) rotateY(180deg);opacity:1} 65%{opacity:1} 100%{transform:translate(calc(var(--px)*2.5),calc(var(--py)*2.5)) scale(0) rotateY(360deg);opacity:0} }
.name-3d-main { font-size: 2.4rem; font-weight: 900; display: inline-block; position: relative; z-index: 2; cursor: default; transform-style: preserve-3d; background: linear-gradient(135deg, #0a1929 0%, #0d47a1 12%, #1565c0 25%, #1e88e5 38%, #2196f3 50%, #42a5f5 62%, #2196f3 75%, #1565c0 88%, #0d47a1 100%); background-size: 400% 400%; -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; animation: nameDNACore 6s ease-in-out infinite, nameGradientShift 3s ease infinite; filter: drop-shadow(0 0 20px rgba(33,150,243,0.6)) drop-shadow(0 0 40px rgba(33,150,243,0.4)) drop-shadow(0 10px 20px rgba(13,71,161,0.5)); letter-spacing: 3px; line-height: 1.3; }
@keyframes nameDNACore { 0%,100%{transform:rotateY(0deg) rotateX(0deg) translateZ(0px) scale(1)} 25%{transform:rotateY(10deg) rotateX(4deg) translateZ(30px) scale(1.06)} 50%{transform:rotateY(0deg) rotateX(0deg) translateZ(0px) scale(1)} 75%{transform:rotateY(-10deg) rotateX(-4deg) translateZ(30px) scale(1.06)} }
@keyframes nameGradientShift { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }
.name-3d-main:hover { animation: nameDNABurst 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards !important; cursor: pointer; }
@keyframes nameDNABurst { 0%{transform:rotateY(0deg) rotateX(0deg) translateZ(0px) scale(1)} 25%{transform:rotateY(30deg) rotateX(20deg) translateZ(60px) scale(1.3)} 50%{transform:rotateY(-15deg) rotateX(-8deg) translateZ(-20px) scale(0.92)} 100%{transform:rotateY(6deg) rotateX(3deg) translateZ(25px) scale(1.12)} }

/* ============================================ */
/* 🔬 العنوان */
/* ============================================ */
.title-3d-wrapper { perspective: 800px; margin: 8px 0 15px; }
.title-3d { font-size: 1.15rem; font-weight: 700; color: #0277bd; display: inline-block; transform-style: preserve-3d; animation: titleMicroscope3D 5s ease-in-out infinite; cursor: default; text-shadow: 2px 2px 0px rgba(255,255,255,0.6), 4px 4px 0px rgba(21,101,192,0.15); }
@keyframes titleMicroscope3D { 0%,100%{transform:translateZ(0px) rotateX(0deg) rotateY(0deg)} 25%{transform:translateZ(15px) rotateX(3deg) rotateY(-2deg)} 50%{transform:translateZ(0px) rotateX(0deg) rotateY(0deg)} 75%{transform:translateZ(12px) rotateX(-3deg) rotateY(2deg)} }

/* ============================================ */
/* كرت المدرس والإحصائيات */
/* ============================================ */
.teacher-profile-card { background: var(--card-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-xl); padding: 25px; margin-bottom: 20px; box-shadow: var(--glass-shadow); text-align: center; transform-style: preserve-3d; perspective: 1000px; }
.teacher-avatar-wrapper { position: relative; display: inline-block; margin-bottom: 20px; }
.teacher-avatar { width: 140px; height: 140px; border-radius: 50%; object-fit: cover; border: 4px solid var(--white); box-shadow: 0 15px 40px rgba(21,101,192,0.3); background: #bbdefb; }
.status-dot { position: absolute; bottom: 15px; right: 15px; width: 20px; height: 20px; background: #00e676; border-radius: 50%; border: 4px solid var(--white); box-shadow: 0 0 20px #00e676; animation: statusPulse 2s infinite; }
@keyframes statusPulse { 0%,100%{box-shadow:0 0 0 0 rgba(0,230,118,0.7)} 50%{box-shadow:0 0 0 15px rgba(0,230,118,0)} }

.stats-row { display: flex; gap: 15px; margin: 15px 0; justify-content: center; flex-wrap: wrap; }
.stat-box { flex: 1; min-width: 100px; max-width: 150px; background: var(--glass-bg-strong); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px); border: 2px solid var(--glass-border-strong); border-radius: var(--radius-md); padding: 18px 12px; text-align: center; transition: all 0.4s; cursor: pointer; }
.stat-box:hover { transform: translateY(-8px) scale(1.05); box-shadow: 0 15px 35px rgba(21,101,192,0.25); border-color: var(--primary); }
.stat-icon { font-size: 2.5rem; display: block; margin-bottom: 8px; }
.stat-val { font-size: 1.8rem; font-weight: 900; color: var(--primary-dark); display: block; }
.stat-lbl { font-size: 0.8rem; color: var(--text-light); font-weight: 700; }

.teacher-bio { color: var(--text-light); font-size: 0.95rem; line-height: 1.8; margin: 15px 0; }
.teacher-tags { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.tag { background: rgba(21,101,192,0.1); color: var(--primary-dark); padding: 8px 16px; border-radius: 25px; font-size: 0.85rem; font-weight: 700; border: 2px solid rgba(21,101,192,0.2); transition: all 0.4s; }
.tag:hover { background: rgba(21,101,192,0.2); border-color: var(--primary); transform: translateY(-6px); }

/* ============================================ */
/* 🆕 أيقونات التواصل الاجتماعي */
/* ============================================ */
.social-links-row { display: flex; gap: 15px; justify-content: center; margin-top: 18px; flex-wrap: wrap; }
.social-btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 25px; border-radius: var(--radius-full); font-weight: 700; font-size: 0.95rem; text-decoration: none; color: white; transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94); box-shadow: var(--shadow-lg); animation: socialFloat 4s ease-in-out infinite; }
.social-btn:nth-child(2) { animation-delay: -2s; }
.social-btn i { font-size: 1.3rem; }
.social-btn:hover { transform: translateY(-8px) scale(1.06); box-shadow: var(--shadow-xl); }
.social-btn:active { transform: scale(0.9); }
@keyframes socialFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-6px)} }
.telegram-btn { background: var(--telegram); }
.telegram-btn:hover { box-shadow: 0 15px 35px rgba(34,158,217,0.5); }
.youtube-btn { background: var(--youtube); }
.youtube-btn:hover { box-shadow: 0 15px 35px rgba(255,0,0,0.5); }
.contact-btn.btn-telegram { background: var(--telegram); }
.contact-btn.btn-telegram:hover { box-shadow: 0 15px 35px rgba(34,158,217,0.5); }

/* ============================================ */
/* شريط الصور */
/* ============================================ */
.slider-title-box { background: linear-gradient(135deg, rgba(21,101,192,0.15) 0%, rgba(33,150,243,0.25) 50%, rgba(66,165,245,0.15) 100%); backdrop-filter: blur(20px); border: 2px solid var(--glass-border-strong); border-radius: var(--radius-md); padding: 14px 20px; margin-bottom: 15px; text-align: center; }
.slider-title-text { font-size: 1.2rem; font-weight: 900; background: linear-gradient(135deg, #0d47a1, #1565c0, #2196f3); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.image-slider-section { margin: 20px 0; }
.slider-main-container { position: relative; border-radius: 22px; overflow: hidden; background: rgba(255,255,255,0.2); backdrop-filter: blur(15px); border: 2px solid var(--glass-border-strong); }
.slider-viewport { overflow: hidden; border-radius: 18px; }
.slider-track { display: flex; transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.slider-card { flex-shrink: 0; width: 100%; aspect-ratio: 4/3; position: relative; overflow: hidden; cursor: pointer; }
.slider-card img { width: 100%; height: 100%; object-fit: cover; }
.slider-card:hover img { transform: scale(1.05); }
.slider-zoom-btn { position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%) scale(0); width: 55px; height: 55px; background: rgba(255,255,255,0.9); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; color: var(--primary); z-index: 5; transition: all 0.4s; opacity: 0; cursor: pointer; border: none; }
.slider-card:hover .slider-zoom-btn { transform: translate(-50%,-50%) scale(1); opacity: 1; }
.slider-badge { position: absolute; top: 12px; right: 12px; background: rgba(0,0,0,0.6); color: white; width: 32px; height: 32px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 0.8rem; z-index: 3; }
.slider-nav-arrow { position: absolute; top: 50%; transform: translateY(-50%); width: 42px; height: 42px; background: rgba(255,255,255,0.85); backdrop-filter: blur(15px); border-radius: 50%; cursor: pointer; z-index: 10; font-size: 1.1rem; color: var(--primary-dark); display: flex; align-items: center; justify-content: center; transition: all 0.4s; }
.slider-nav-arrow:hover { background: var(--primary); color: white; }
.slider-arrow-right { right: 12px; } .slider-arrow-left { left: 12px; }
.slider-counter { text-align: center; margin-top: 10px; font-weight: 700; color: var(--primary-dark); }

/* ============================================ */
/* بطاقات المعلومات */
/* ============================================ */
.info-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.info-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-md); padding: 18px; text-align: center; transition: all 0.3s; }
.info-card:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(21,101,192,0.2); }
.info-card i { font-size: 2rem; color: var(--primary); margin-bottom: 8px; display: block; }
.info-card h4 { font-size: 0.85rem; color: var(--text-light); }
.info-card p { font-weight: 700; color: var(--primary-dark); }

/* ============================================ */
/* بطاقات الملفات */
/* ============================================ */
.files-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.file-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-md); padding: 20px 15px; text-align: center; transition: all 0.4s; }
.file-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(21,101,192,0.25); }
.file-card.pdf-card { border-left: 5px solid #e53935; }
.file-card.ppt-card { border-left: 5px solid var(--orange); }
.file-icon { width: 60px; height: 60px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; margin: 0 auto 12px; font-size: 2rem; }
.file-card.pdf-card .file-icon { background: rgba(229,57,53,0.15); color: #c62828; }
.file-card.ppt-card .file-icon { background: rgba(251,140,0,0.15); color: #e65100; }
.file-card h4 { font-size: 0.85rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 4px; }
.file-type { font-size: 0.7rem; font-weight: 600; padding: 3px 10px; border-radius: 10px; display: inline-block; margin-bottom: 8px; }
.file-card.pdf-card .file-type { background: rgba(229,57,53,0.15); color: #c62828; }
.file-card.ppt-card .file-type { background: rgba(251,140,0,0.15); color: #e65100; }
.file-size { font-size: 0.7rem; color: var(--text-light); opacity: 0.7; margin-bottom: 12px; display: block; }
.file-actions { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.btn-file { padding: 8px 14px; border-radius: var(--radius-sm); font-size: 0.75rem; font-weight: 700; border: none; cursor: pointer; color: white; display: inline-flex; align-items: center; gap: 4px; text-decoration: none; transition: all 0.3s; }
.btn-view { background: var(--primary); }
.btn-view:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-download { background: var(--success); }
.btn-download:hover { background: var(--success-dark); transform: translateY(-2px); }

/* ============================================ */
/* 🆕 الفيديوهات مع الأزرار */
/* ============================================ */
.video-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-md); overflow: hidden; margin-bottom: 20px; transition: all 0.3s; }
.video-card:hover { transform: translateY(-5px); }
.video-embed { position: relative; width: 100%; aspect-ratio: 16/9; background: #000; overflow: hidden; }
.video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: none; }
.video-play-overlay { transition: all 0.3s ease; }
.video-play-overlay:hover { background: rgba(255,0,0,0.8) !important; transform: translate(-50%,-50%) scale(1.2) !important; }
.video-info { padding: 15px; }
.video-info h4 { font-weight: 700; color: var(--primary-dark); }
.video-info p { font-size: 0.85rem; color: var(--text-light); opacity: 0.8; }
.video-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.btn-play-video { background: var(--primary) !important; padding: 10px 20px !important; border-radius: 50px !important; font-weight: 700 !important; color: white !important; display: inline-flex !important; align-items: center !important; gap: 8px !important; border: none !important; cursor: pointer !important; font-family: inherit !important; }
.btn-play-video:hover { background: var(--primary-dark) !important; transform: translateY(-2px); }
.btn-open-youtube { background: #FF0000 !important; padding: 10px 20px !important; border-radius: 50px !important; font-weight: 700 !important; color: white !important; display: inline-flex !important; align-items: center !important; gap: 8px !important; text-decoration: none !important; }
.btn-open-youtube:hover { background: #cc0000 !important; transform: translateY(-2px); }

/* ============================================ */
/* 🆕 مودال كود التحميل */
/* ============================================ */
.code-modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); backdrop-filter: blur(8px); z-index: 3000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.4s ease; }
.code-modal-overlay.active { opacity: 1; pointer-events: all; }
.code-modal-content { background: white; border-radius: var(--radius-lg); width: 90%; max-width: 400px; padding: 25px; box-shadow: 0 25px 60px rgba(0,0,0,0.3); animation: modalZoomIn 0.4s ease; }
.code-modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.code-modal-header h3 { color: var(--primary-dark); font-size: 1.2rem; }
.code-modal-close { width: 38px; height: 38px; border-radius: 50%; border: none; background: var(--danger-light); color: var(--danger-dark); cursor: pointer; font-size: 1.1rem; display: flex; align-items: center; justify-content: center; }
.code-modal-close:hover { background: rgba(244,67,54,0.2); transform: rotate(90deg); }
@keyframes modalZoomIn { from{opacity:0;transform:scale(0.7)} to{opacity:1;transform:scale(1)} }

/* ============================================ */
/* التواصل */
/* ============================================ */
.contact-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 25px; text-align: center; }
.contact-btn { display: inline-flex; align-items: center; gap: 10px; padding: 16px 35px; border-radius: var(--radius-full); font-size: 1.1rem; font-weight: 700; text-decoration: none; margin: 10px 0; color: white; transition: all 0.3s; }
.btn-call { background: var(--primary); } .btn-whatsapp { background: #25D366; }
.contact-btn:hover { transform: translateY(-3px); }
.contact-info-row { display: flex; flex-direction: column; gap: 15px; margin-top: 20px; }
.contact-info-item { display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,0.4); padding: 12px 18px; border-radius: 15px; font-size: 0.9rem; }

/* ============================================ */
/* الاختبارات */
/* ============================================ */
.test-register-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 30px 25px; margin-bottom: 20px; }
.test-register-card h3 { text-align: center; color: var(--primary-dark); margin-bottom: 25px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 700; color: var(--text); }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 14px 16px; border-radius: 15px; border: 2px solid rgba(21,101,192,0.2); background: rgba(255,255,255,0.6); font-size: 1rem; transition: all 0.3s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.exam-list { display: flex; flex-direction: column; gap: 10px; max-height: 300px; overflow-y: auto; }
.exam-option { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 15px; border: 2px solid rgba(21,101,192,0.15); background: rgba(255,255,255,0.4); cursor: pointer; font-weight: 600; transition: all 0.3s; }
.exam-option:hover { border-color: var(--primary); }
.exam-option.selected { border-color: var(--primary); background: rgba(21,101,192,0.15); }
.btn-start { display: block; width: 100%; padding: 16px; background: linear-gradient(135deg, #1565c0, #0d47a1); color: white; border: none; border-radius: var(--radius-full); font-size: 1.2rem; font-weight: 700; cursor: pointer; margin-top: 15px; }
.exam-screen { display: none; }
.exam-header { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-md); padding: 18px 20px; margin-bottom: 20px; display: flex; justify-content: space-between; }
.exam-timer { font-weight: 900; font-size: 1.4rem; padding: 8px 18px; border-radius: var(--radius-full); background: rgba(21,101,192,0.1); color: var(--primary-dark); }
.exam-timer.warning { background: var(--warning-light); color: var(--warning-dark); animation: timerPulse 0.5s infinite; }
.exam-timer.danger { background: var(--danger-light); color: var(--danger-dark); animation: timerPulse 0.3s infinite; }
@keyframes timerPulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.08)} }
.exam-q-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 25px; }
.q-num { color: var(--primary); font-weight: 700; margin-bottom: 10px; }
.q-text { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 25px; line-height: 1.6; }
.q-options { display: flex; flex-direction: column; gap: 10px; }
.q-option { padding: 15px 18px; background: rgba(255,255,255,0.5); border: 2px solid rgba(21,101,192,0.15); border-radius: 15px; cursor: pointer; font-weight: 600; transition: all 0.3s; }
.q-option:hover { background: rgba(21,101,192,0.08); border-color: var(--primary); }
.q-option.correct { background: var(--success-light) !important; border-color: var(--success) !important; }
.q-option.wrong { background: var(--danger-light) !important; border-color: var(--danger) !important; }
.q-option.disabled { pointer-events: none; opacity: 0.8; }
.feedback { margin-top: 15px; padding: 12px 18px; border-radius: var(--radius-sm); font-weight: 700; text-align: center; display: none; }
.feedback.show { display: block; }
.feedback.correct { background: var(--success-light); color: #1b5e20; }
.feedback.wrong { background: var(--danger-light); color: #b71c1c; }
.btn-next { display: block; width: 100%; padding: 14px; background: var(--primary); color: white; border: none; border-radius: var(--radius-full); font-size: 1.1rem; font-weight: 700; cursor: pointer; margin-top: 15px; }
.result-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 30px; text-align: center; }
.result-score { font-size: 5rem; font-weight: 900; background: linear-gradient(135deg, #1565c0, #0d47a1); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.btn-retry { padding: 14px 35px; background: linear-gradient(135deg, #1565c0, #0d47a1); color: white; border: none; border-radius: var(--radius-full); font-size: 1.1rem; font-weight: 700; cursor: pointer; }

/* ============================================ */
/* ⭐ التقييمات */
/* ============================================ */
.reviews-section { margin-top: 25px; }
.rating-summary { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 25px; text-align: center; margin-bottom: 20px; }
.rating-big { font-size: 4rem; font-weight: 900; background: linear-gradient(135deg, #0d47a1, #1565c0); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; }
.rating-stars { font-size: 1.8rem; margin: 10px 0; }
.rating-stars i { margin: 0 2px; }
.rating-count { font-size: 0.9rem; color: var(--text-light); opacity: 0.7; }
.reviews-list { display: flex; flex-direction: column; gap: 15px; margin-bottom: 25px; }
.review-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-md); padding: 20px; }
.review-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.review-avatar { width: 45px; height: 45px; border-radius: 50%; background: linear-gradient(135deg, #0d47a1, #1565c0); color: white; display: flex; align-items: center; justify-content: center; font-weight: 900; font-size: 1.2rem; flex-shrink: 0; }
.review-stars i { font-size: 0.85rem; }
.review-comment { color: var(--text); font-size: 0.95rem; line-height: 1.7; }
.review-form-card { background: var(--card-bg); backdrop-filter: blur(20px); border: 1px solid var(--card-border); border-radius: var(--radius-lg); padding: 25px; }
.review-form-card h3 { text-align: center; color: var(--primary-dark); margin-bottom: 20px; }
.star-rating-input { display: flex; flex-direction: row-reverse; justify-content: flex-end; gap: 5px; }
.star-rating-input input { display: none; }
.star-rating-input label { cursor: pointer; font-size: 2rem; color: #ddd; transition: all 0.2s; }
.star-rating-input label:hover, .star-rating-input label:hover ~ label, .star-rating-input input:checked ~ label { color: #ffb300; transform: scale(1.2); }
.alert { padding: 14px 18px; border-radius: var(--radius-sm); font-weight: 700; margin-bottom: 20px; text-align: center; }
.alert-success { background: var(--success-light); color: #1b5e20; }
.alert-danger { background: var(--danger-light); color: #b71c1c; }
.empty-state { text-align: center; padding: 40px; color: var(--text-muted); }
.empty-state i { font-size: 3rem; display: block; margin-bottom: 10px; opacity: 0.5; }

/* ============================================ */
/* مودال الصورة */
/* ============================================ */
.image-modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.85); backdrop-filter: blur(10px); z-index: 3000; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.4s; }
.image-modal-overlay.active { opacity: 1; pointer-events: all; }
.image-modal-content { width: 90%; max-width: 550px; background: var(--white); border-radius: var(--radius-lg); overflow: hidden; }
.image-modal-header { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; }
.image-modal-close { width: 38px; height: 38px; border-radius: 50%; border: none; background: var(--danger-light); color: var(--danger-dark); cursor: pointer; }
.image-modal-body img { width: 100%; max-height: 70vh; object-fit: contain; }
.image-modal-footer { display: flex; justify-content: center; gap: 10px; padding: 15px 20px; }
.btn-modal-nav { width: 45px; height: 45px; border-radius: 50%; border: 2px solid var(--primary); background: white; color: var(--primary); cursor: pointer; }

/* ============================================ */
/* Toast */
/* ============================================ */
.toast { position: fixed; top: 20px; left: 50%; transform: translateX(-50%) translateY(-120px); background: rgba(21,101,192,0.95); color: white; padding: 12px 25px; border-radius: var(--radius-full); z-index: 9999; font-weight: 700; transition: transform 0.5s; pointer-events: none; }
.toast.show { transform: translateX(-50%) translateY(0); }

/* ============================================ */
/* ميديا كويريز */
/* ============================================ */
@media (max-width: 480px) {
    .bottom-nav { padding: 8px 2px; border-radius: 20px; bottom: 10px; width: calc(100% - 20px); }
    .nav-item { padding: 6px 8px; font-size: 9px; min-width: 42px; }
    .nav-item i { font-size: 17px; }
    .name-3d-main { font-size: 1.7rem; letter-spacing: 1px; }
    .title-3d { font-size: 1rem; }
    .dna-strand { width: 110%; height: 60px; }
    .files-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .file-card { padding: 15px 10px; }
    .file-card h4 { font-size: 0.75rem; }
    .result-score { font-size: 3.5rem; }
    .rating-big { font-size: 3rem; }
    .star-rating-input label { font-size: 1.6rem; }
    .stat-box { min-width: 80px; padding: 14px 8px; }
    .stat-val { font-size: 1.5rem; }
    .social-btn { padding: 12px 18px; font-size: 0.85rem; }
}

@media (max-width: 380px) {
    .name-3d-main { font-size: 1.4rem; }
    .title-3d { font-size: 0.9rem; }
    .dna-strand { width: 105%; height: 50px; }
    .files-grid { grid-template-columns: 1fr; }
}

@media (max-width: 350px) {
    .stats-row { flex-direction: column; align-items: center; }
    .stat-box { max-width: 100%; width: 100%; }
}