/* ===== CUSTOM PROPERTIES ===== */
        :root {
            --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
            --accent-color: #667eea;
            --accent-secondary: #764ba2;
            --text-primary: #ffffff;
            --text-secondary: #cbd5e0;
            --text-muted: #a0aec0;
            --bg-primary: #0f172a;
            --bg-secondary: #1e293b;
            --bg-card: #1e293b;
            --border-color: rgba(102, 126, 234, 0.2);
            --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
            --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.2);
            --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3);
            --transition-fast: 0.2s ease;
            --transition-base: 0.3s ease;
            --transition-slow: 0.5s ease;
        }

        /* ===== GLOBAL STYLES ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        /* ===== NAVIGATION BAR ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            padding: 1rem 0;
            transition: all var(--transition-base);
        }

        .navbar.scrolled {
            background: rgba(15, 23, 42, 0.95);
            box-shadow: var(--shadow-lg);
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .nav-links {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: color var(--transition-fast);
            position: relative;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-gradient);
            transition: width var(--transition-base);
        }

        .nav-links a:hover {
            color: var(--text-primary);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        /* ===== HERO SECTION ===== */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 8rem 2rem 4rem;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
        }

        /* Animated gradient orbs */
        .orb {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.3;
            animation: float 20s ease-in-out infinite;
        }

        .orb-1 {
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, #667eea 0%, transparent 70%);
            top: -200px;
            right: -200px;
            animation-delay: 0s;
        }

        .orb-2 {
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, #764ba2 0%, transparent 70%);
            bottom: -150px;
            left: -150px;
            animation-delay: 5s;
        }

        .orb-3 {
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, #f093fb 0%, transparent 70%);
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            animation-delay: 10s;
        }

        @keyframes float {
            0%, 100% { 
                transform: translate(0, 0) scale(1);
                opacity: 0.3;
            }
            33% { 
                transform: translate(30px, -30px) scale(1.1);
                opacity: 0.4;
            }
            66% { 
                transform: translate(-20px, 20px) scale(0.9);
                opacity: 0.25;
            }
        }

        .hero-container {
            max-width: 1200px;
            width: 100%;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 4rem;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            opacity: 0;
            animation: fadeInUp 1s ease-out forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-badge {
            display: inline-block;
            padding: 0.5rem 1rem;
            background: rgba(102, 126, 234, 0.1);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--accent-color);
            font-size: 0.875rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            animation: fadeInUp 1s ease-out 0.2s backwards;
        }

        .hero-content h1 {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 1.5rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
            animation: fadeInUp 1s ease-out 0.3s backwards;
        }

        .hero-content h2 {
            font-size: clamp(1.25rem, 3vw, 1.75rem);
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-weight: 600;
            animation: fadeInUp 1s ease-out 0.4s backwards;
        }

        .hero-content p {
            font-size: 1.125rem;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 2.5rem;
            max-width: 600px;
            animation: fadeInUp 1s ease-out 0.5s backwards;
        }

        .cta-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            animation: fadeInUp 1s ease-out 0.6s backwards;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 2rem;
            background: var(--primary-gradient);
            color: var(--text-primary);
            text-decoration: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            transition: all var(--transition-base);
            box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
            position: relative;
            overflow: hidden;
        }

        .cta-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .cta-button:hover::before {
            opacity: 1;
        }

        .cta-button span {
            position: relative;
            z-index: 1;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
        }

        .cta-secondary {
            background: transparent;
            border: 2px solid var(--border-color);
            box-shadow: none;
        }

        .cta-secondary::before {
            background: rgba(102, 126, 234, 0.1);
        }

        .cta-secondary:hover {
            border-color: var(--accent-color);
            box-shadow: 0 5px 20px rgba(102, 126, 234, 0.2);
        }

        .hero-image {
            display: flex;
            justify-content: center;
            align-items: center;
            opacity: 0;
            animation: fadeInRight 1s ease-out 0.4s forwards;
        }

        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(40px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .profile-container {
            position: relative;
            width: 380px;
            height: 380px;
        }

        .profile-photo {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            object-fit: cover;
            border: 4px solid var(--accent-color);
            box-shadow: 0 20px 60px rgba(102, 126, 234, 0.4);
            transition: all var(--transition-slow);
            position: relative;
            z-index: 2;
        }

        .profile-container::before {
            content: '';
            position: absolute;
            inset: -10px;
            background: var(--primary-gradient);
            border-radius: 50%;
            opacity: 0.3;
            filter: blur(20px);
            z-index: 1;
            transition: all var(--transition-slow);
        }

        .profile-container:hover .profile-photo {
            transform: scale(1.05);
            box-shadow: 0 25px 70px rgba(102, 126, 234, 0.5);
        }

        .profile-container:hover::before {
            opacity: 0.5;
            filter: blur(30px);
        }

        /* ===== STATS SECTION ===== */
        .stats-section {
            padding: 2rem 2rem 4rem;
            background: var(--bg-primary);
        }

        .stats-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
        }

        .stat-card {
            background: var(--bg-card);
            padding: 2rem;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-color);
            box-shadow: var(--shadow-lg);
        }

        .stat-icon {
            font-size: 2.5rem;
            margin-bottom: 1rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .stat-label {
            color: var(--text-muted);
            font-size: 0.875rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== ABOUT SECTION ===== */
        .about-section {
            padding: 6rem 2rem;
            background: var(--bg-secondary);
            position: relative;
        }

        .section-title {
            text-align: center;
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 800;
            margin-bottom: 1rem;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-muted);
            font-size: 1.125rem;
            margin-bottom: 4rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .about-container {
            max-width: 1000px;
            margin: 0 auto;
            background: var(--bg-card);
            padding: 3rem;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-xl);
            transition: all var(--transition-base);
        }

        .about-container:hover {
            border-color: var(--accent-color);
            box-shadow: 0 25px 50px rgba(102, 126, 234, 0.2);
        }

        .about-container h3 {
            color: var(--text-primary);
            font-size: 1.75rem;
            margin-bottom: 1.5rem;
            font-weight: 700;
        }

        .about-container p {
            color: var(--text-secondary);
            font-size: 1.0625rem;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .about-highlights {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2.5rem;
        }

        .highlight-card {
            background: rgba(102, 126, 234, 0.05);
            padding: 2rem;
            border-radius: 20px;
            border: 1px solid var(--border-color);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .highlight-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary-gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition-base);
        }

        .highlight-card:hover {
            transform: translateY(-5px);
            background: rgba(102, 126, 234, 0.1);
            border-color: var(--accent-color);
            box-shadow: var(--shadow-lg);
        }

        .highlight-card:hover::before {
            transform: scaleX(1);
        }

        .highlight-card h4 {
            color: var(--text-primary);
            margin-bottom: 0.75rem;
            font-size: 1.25rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .highlight-card p {
            font-size: 0.9375rem;
            margin-bottom: 0;
            color: var(--text-muted);
        }

        /* ===== COURSES SECTION ===== */
        /* Reuses existing bg-primary, gradients, card, and shadow variables so it matches the rest of the site */
        .courses-section {
            padding: 6rem 2rem;
            background: var(--bg-primary);
            position: relative;
        }

        .courses-grid {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }

        /* Base course card - glassmorphism to match about/highlight cards */
        .course-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition-base);
            position: relative;
            backdrop-filter: blur(10px);
        }

        .course-card:hover {
            transform: translateY(-8px);
            border-color: var(--accent-color);
            box-shadow: 0 20px 45px rgba(102, 126, 234, 0.3);
        }

        .course-thumb-wrap {
            width: 100%;
            height: 190px;
            overflow: hidden;
            border-radius: 20px 20px 0 0;
        }

        .course-thumb-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .course-card:hover .course-thumb-wrap img {
            transform: scale(1.06);
        }

        .course-body {
            padding: 1.75rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .course-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            color: var(--accent-color);
            margin-bottom: 0.5rem;
        }

        .course-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .course-body p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 1.25rem;
            flex: 1;
        }

        .course-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
            flex-wrap: wrap;
        }

        .course-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.825rem;
            color: var(--text-secondary);
        }

        .level-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.25rem 0.75rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(34, 197, 94, 0.12);
            color: #4ade80;
            border: 1px solid rgba(34, 197, 94, 0.3);
        }

        .course-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.85rem 1.5rem;
            background: var(--primary-gradient);
            color: var(--text-primary);
            text-decoration: none;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            transition: all var(--transition-base);
            box-shadow: 0 8px 20px rgba(102, 126, 234, 0.25);
        }

        .course-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
        }

        /* Featured Python course - visually more prominent, spans full width on top */
        .course-card.featured {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: 1fr 1.3fr;
            border: 1px solid var(--accent-color);
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.25);
        }

        .course-card.featured .course-thumb-wrap {
            height: 100%;
            border-radius: 20px 0 0 20px;
        }

        .course-card.featured .course-body {
            padding: 2.25rem;
            justify-content: center;
        }

        .course-card.featured .course-tag {
            font-size: 0.8rem;
        }

        .course-card.featured h3 {
            font-size: 1.75rem;
        }

        .course-card.featured p {
            font-size: 1.0625rem;
        }

        .featured-star {
            position: absolute;
            top: 1.25rem;
            right: 1.25rem;
            background: var(--secondary-gradient);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            padding: 0.35rem 0.8rem;
            border-radius: 50px;
            text-transform: uppercase;
            box-shadow: 0 4px 15px rgba(245, 87, 108, 0.4);
        }

        .course-card.featured:hover {
            transform: translateY(-8px);
            box-shadow: 0 25px 55px rgba(102, 126, 234, 0.4);
        }
/* ===== VIDEO LIST (RESOURCES STYLE) ===== */

.video-list{
  max-width:1100px;
  margin:0 auto;
}

/* ROW */
.video-row{
  display:flex;
  gap:1.2rem;
  padding:1rem;
  border-bottom:1px solid rgba(102,126,234,.25);
  transition: background .25s ease;
}

.video-row:hover{
  background:rgba(102,126,234,.06);
}

/* THUMB */
.video-thumb{
  width:190px;
  height:110px;
  border-radius:10px;
  object-fit:cover;
}

/* INFO */
.video-info{
  flex:1;
}

.video-title{
  font-size:.95rem;
  font-weight:600;
  margin-bottom:.45rem;
  line-height:1.4;
}

/* ACTIONS */
.video-actions{
  display:flex;
  gap:.7rem;
  align-items:center;
  flex-wrap:wrap;
}

/* RESOURCE BUTTON */
.resource-btn{
  padding:.38rem 1rem;
  font-size:.75rem;
  border-radius:20px;
  background:linear-gradient(135deg,#22c55e,#16a34a);
  color:#ffffff;
  text-decoration:none;
  font-weight:600;
  transition: all .25s ease;
}

.resource-btn:hover{
  background:linear-gradient(135deg,#16a34a,#15803d);
  transform: translateY(-1px);
  box-shadow:0 6px 18px rgba(34,197,94,.45);
}

/* WATCH BUTTON */
.watch-btn{
  padding:.38rem 1rem;
  font-size:.75rem;
  border-radius:20px;
  background:transparent;
  border:1px solid #667eea;
  color:#a5b4fc;
  text-decoration:none;
  font-weight:600;
  transition: all .25s ease;
}

.watch-btn:hover{
  background:rgba(102,126,234,.12);
  color:#ffffff;
  border-color:#818cf8;
  transform: translateY(-1px);
}

/* NO RESOURCE */
.no-resource{
  font-size:.75rem;
  color:#94a3b8;
}

/* ===== WATCH MORE VIDEOS ===== */

.watch-more-container{
    display:flex;
    justify-content:center;
    margin-top:2.5rem;
}

.watch-more-btn{
    display:inline-flex;
    align-items:center;
    gap:.6rem;

    padding:.85rem 1.6rem;

    border-radius:50px;

    background:linear-gradient(135deg,#667eea,#764ba2);

    color:#ffffff;
    text-decoration:none;

    font-size:.9rem;
    font-weight:600;

    border:1px solid rgba(255,255,255,.1);

    box-shadow:0 10px 30px rgba(102,126,234,.25);

    transition:all .3s ease;
}

.watch-more-btn:hover{
    transform:translateY(-4px);

    box-shadow:
        0 15px 40px rgba(102,126,234,.4);

    background:linear-gradient(135deg,#764ba2,#667eea);
}

.watch-more-btn i:first-child{
    color:#ff0000;
    font-size:1.1rem;
}

.watch-more-btn i:last-child{
    transition:transform .3s ease;
}

.watch-more-btn:hover i:last-child{
    transform:translateX(4px);
}

        /* ===== FLOATING YOUTUBE BUTTON ===== */
        .youtube-float {
            position: fixed;
            bottom: 2rem;
            right: 2rem;
            z-index: 999;
        }

        .youtube-float-btn {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1rem 1.75rem;
            background: linear-gradient(135deg, #ff0000, #cc0000);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 700;
            box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
            transition: all var(--transition-base);
            animation: pulse-btn 3s ease-in-out infinite;
        }

        @keyframes pulse-btn {
            0%, 100% {
                box-shadow: 0 10px 30px rgba(255, 0, 0, 0.4);
                transform: scale(1);
            }
            50% {
                box-shadow: 0 15px 45px rgba(255, 0, 0, 0.6);
                transform: scale(1.05);
            }
        }

        .youtube-float-btn:hover {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 20px 50px rgba(255, 0, 0, 0.6);
            animation: none;
        }

        .youtube-icon {
            font-size: 1.5rem;
        }

        /* ===== FOOTER ===== */
        .footer {
            background: var(--bg-secondary);
            padding: 4rem 2rem 2rem;
            border-top: 1px solid var(--border-color);
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand {
            max-width: 350px;
        }

        .footer-logo {
            font-size: 1.75rem;
            font-weight: 800;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
            display: block;
        }

        .footer-description {
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .footer-column h4 {
            color: var(--text-primary);
            font-size: 1.125rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 0.75rem;
        }

        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

        .footer-links a:hover {
            color: var(--accent-color);
            transform: translateX(5px);
        }

        .social-links {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
        }

        .social-link {
            width: 45px;
            height: 45px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(102, 126, 234, 0.1);
            border: 1px solid var(--border-color);
            border-radius: 50%;
            color: var(--text-secondary);
            font-size: 1.25rem;
            text-decoration: none;
            transition: all var(--transition-base);
        }

        .social-link:hover {
            background: var(--primary-gradient);
            border-color: transparent;
            color: white;
            transform: translateY(-5px) rotate(5deg);
            box-shadow: var(--shadow-lg);
        }

        .footer-bottom {
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .footer-text {
            color: var(--text-muted);
            font-size: 0.875rem;
        }

        .footer-text a {
            color: var(--accent-color);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-text a:hover {
            color: var(--accent-secondary);
        }

        /* ===== SCROLL TO TOP BUTTON ===== */
        .scroll-top {
            position: fixed;
            bottom: 2rem;
            left: 2rem;
            width: 50px;
            height: 50px;
            background: var(--primary-gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.25rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all var(--transition-base);
            z-index: 999;
            box-shadow: var(--shadow-lg);
        }

        .scroll-top.visible {
            opacity: 1;
            visibility: visible;
        }

        .scroll-top:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(102, 126, 234, 0.5);
        }

        /* ===== RESPONSIVE DESIGN ===== */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                gap: 3rem;
                text-align: center;
            }

            .hero-image {
                order: -1;
            }

            .profile-container {
                width: 300px;
                height: 300px;
            }

            .cta-buttons {
                justify-content: center;
            }

            .footer-content {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-brand {
                max-width: 100%;
            }

            .courses-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .course-card.featured .course-thumb-wrap {
                height: 220px;
                border-radius: 20px 20px 0 0;
            }
        }

        @media (max-width: 768px) {
            html {
                font-size: 14px;
            }

            .nav-links {
                display: none;
            }

            .hero-section {
                padding: 6rem 1.5rem 3rem;
            }

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

            .about-container {
                padding: 2rem;
            }

            .about-highlights {
                grid-template-columns: 1fr;
            }

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

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

            .footer {
                padding: 3rem 1.5rem 1.5rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .youtube-float {
                bottom: 1.5rem;
                right: 1.5rem;
            }

            .scroll-top {
                bottom: 1.5rem;
                left: 1.5rem;
            }

            .youtube-float-btn {
                padding: 0.875rem 1.5rem;
                font-size: 0.9rem;
            }

            .youtube-float-btn span:last-child {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .stats-container {
                grid-template-columns: 1fr;
            }

            .profile-container {
                width: 250px;
                height: 250px;
            }

            .social-links {
                justify-content: center;
            }
        }
        /* ===== serch DESIGN ===== */
        .video-search-box{
  max-width:500px;
  margin:0 auto 2.5rem;
  display:flex;
  align-items:center;
  gap:.6rem;
  padding:.65rem 1rem;
  background:#0b1220;
  border:1px solid rgba(102,126,234,.35);
  border-radius:30px;
}

.video-search-box i{
  color:#94a3b8;
  font-size:.9rem;
}

.video-search-box input{
  flex:1;
  background:transparent;
  border:none;
  outline:none;
  color:#ffffff;
  font-size:.9rem;
}

.video-search-box input::placeholder{
  color:#94a3b8;
}
.search-suggestions{
  max-width:500px;
  margin:0 auto;
  background:#0b1220;
  border:1px solid rgba(102,126,234,.3);
  border-top:none;
  border-radius:0 0 14px 14px;
  overflow:hidden;
  display:none;
  z-index:50;
}

.suggestion-item{
  padding:.6rem 1rem;
  font-size:.85rem;
  color:#c7d2fe;
  cursor:pointer;
  transition:background .2s;
}

.suggestion-item:hover{
  background:rgba(102,126,234,.15);
}
        /* ===== MOBILE ONLY (FINAL & CLEAN) ===== */
@media (max-width:768px){

  /* SEARCH */
  .video-search-box{
    max-width:100%;
    padding:0 1rem;
  }

  .video-search-box input{
    padding:1.1rem 1.2rem 1.1rem 3rem;
    font-size:1rem;
  }

  /* VIDEO LIST */
  .video-row{
    flex-direction:column;
    gap:.8rem;
    padding:1rem;
  }

  .video-thumb{
    width:100%;
    height:220px;
    border-radius:12px;
    object-fit:contain;
  }

  .video-title{
    font-size:1.05rem;
    line-height:1.45;
  }

  .video-actions{
    display:flex;
    gap:.6rem;
    flex-wrap:wrap;
  }

  .watch-btn,
  .resource-btn{
    padding:.75rem 1.4rem;
    font-size:.9rem;
    border-radius:26px;
  }

}