:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: rgba(15, 15, 25, 0.7);
    --dev-color: #a855f7;
    --dev-glow: rgba(168, 85, 247, 0.4);
    --geo-color: #10b981;
    --geo-glow: rgba(16, 185, 129, 0.4);
    --drone-color: #f59e0b;
    --drone-glow: rgba(245, 158, 11, 0.4);
    --soft-color: #3b82f6;
    --soft-glow: rgba(59, 130, 246, 0.4);
    --html-color: #ff6b35;
    --html-glow: rgba(255, 107, 53, 0.4);
    --css-color: #00d4ff;
    --css-glow: rgba(0, 212, 255, 0.4);
    --js-color: #ffd93d;
    --js-glow: rgba(255, 217, 61, 0.4);
    --python-color: #3572A5;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent-purple: #a855f7;
    --accent-pink: #ec4899;
    --accent-cyan: #22d3ee;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.3);
    --font-display: 'Orbitron', sans-serif;
    --font-code: 'Fira Code', monospace;
    --font-body: 'Space Grotesk', sans-serif;
    --section-padding: clamp(60px, 10vw, 100px) 5%;
    --card-padding: clamp(1.25rem, 3vw, 2rem);
    --border-radius: 20px;
    --border-radius-sm: 12px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

.light-theme {
    --bg-dark: #f5f5fa;
    --bg-darker: #e8e8f0;
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a5a;
    --text-muted: #7a7a8a;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(0, 0, 0, 0.1);
    --glass-shadow: rgba(0, 0, 0, 0.1);
}

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button { font-family: inherit; }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-darker); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--dev-color), var(--geo-color), var(--drone-color), var(--soft-color)); border-radius: 5px; }
::selection { background: var(--accent-purple); color: white; }

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 5%;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: clamp(0.9rem, 2.5vw, 1.25rem);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.15rem;
}

.logo-bracket { color: var(--accent-cyan); }
.logo-text { background: linear-gradient(90deg, var(--accent-purple), var(--accent-pink)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo-slash { color: var(--text-muted); margin: 0 0.1rem; }
.logo-text-alt { color: var(--accent-cyan); }

.nav-links {
    display: flex;
    list-style: none;
    gap: clamp(0.5rem, 2vw, 2rem);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem clamp(0.5rem, 1vw, 1rem);
    border-radius: 8px;
    transition: var(--transition-fast);
    position: relative;
    font-size: clamp(0.8rem, 1.5vw, 1rem);
    white-space: nowrap;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: var(--transition-fast);
    transform: translateX(-50%);
}

.nav-link:hover::after, .nav-link.active::after { width: 80%; }
.nav-link:hover, .nav-link.active { color: var(--text-primary); }

.nav-actions { display: flex; align-items: center; gap: 0.75rem; }

.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 42px;
    height: 42px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    flex-shrink: 0;
}

.theme-toggle:hover { background: var(--glass-border); transform: rotate(180deg); }
.theme-icon { font-size: 1.25rem; }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.menu-bar {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.menu-toggle.active .menu-bar:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active .menu-bar:nth-child(2) { opacity: 0; }
.menu-toggle.active .menu-bar:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 5% 80px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-bg { position: absolute; inset: 0; z-index: -1; }

.grid-lines {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(50px); }
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.35;
    animation: glowPulse 4s ease-in-out infinite alternate;
}

.glow-1 { width: clamp(150px, 25vw, 350px); height: clamp(150px, 25vw, 350px); background: var(--dev-color); top: 10%; left: 5%; }
.glow-2 { width: clamp(120px, 20vw, 280px); height: clamp(120px, 20vw, 280px); background: var(--geo-color); top: 60%; right: 10%; animation-delay: 1s; }
.glow-3 { width: clamp(140px, 22vw, 300px); height: clamp(140px, 22vw, 300px); background: var(--drone-color); bottom: 15%; left: 20%; animation-delay: 2s; }
.glow-4 { width: clamp(100px, 18vw, 250px); height: clamp(100px, 18vw, 250px); background: var(--soft-color); top: 30%; right: 25%; animation-delay: 3s; }

@keyframes glowPulse {
    0% { opacity: 0.2; transform: scale(1); }
    100% { opacity: 0.4; transform: scale(1.15); }
}

.hero-content { z-index: 1; max-width: 900px; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(34, 211, 238, 0.15));
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 50px;
    padding: 0.5rem 1.25rem;
    margin-bottom: 1.5rem;
    animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% { box-shadow: 0 0 20px rgba(168, 85, 247, 0.2); }
    50% { box-shadow: 0 0 30px rgba(168, 85, 247, 0.4); }
}

.badge-icon { color: var(--accent-cyan); }

.badge-text {
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 10vw, 7rem);
    font-weight: 900;
    line-height: 1;
    margin-bottom: 1rem;
}

.title-line { display: block; }

.char {
    display: inline-block;
    animation: charFloat 3s ease-in-out infinite;
    animation-delay: calc(var(--i) * 0.08s);
}

.char.accent { background: linear-gradient(180deg, var(--accent-cyan), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

@keyframes charFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: clamp(0.9rem, 2.5vw, 1.35rem);
    color: var(--text-secondary);
    margin-bottom: 1rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.hero-description {
    font-size: clamp(1rem, 1.5vw, 1.1rem);
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-description strong { color: var(--text-primary); font-weight: 600; }

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: clamp(0.75rem, 1.5vw, 0.9rem);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary { background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink)); color: white; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(168, 85, 247, 0.4); }
.btn-arrow { transition: var(--transition-fast); }
.btn-primary:hover .btn-arrow { transform: translateX(5px); }
.btn-secondary { background: transparent; color: var(--text-primary); border: 2px solid var(--glass-border); }
.btn-secondary:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); box-shadow: 0 0 25px rgba(34, 211, 238, 0.3); }

.hero-stats { display: flex; justify-content: center; gap: clamp(2rem, 6vw, 5rem); flex-wrap: wrap; }
.stat { text-align: center; }
.stat-number { display: block; font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3rem); font-weight: 700; background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-label { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; }

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
}

.scroll-indicator:hover { color: var(--accent-cyan); }
.scroll-indicator span { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.2em; }
.scroll-arrow { animation: scrollBounce 2s ease-in-out infinite; }

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

.section { padding: var(--section-padding); position: relative; }

.section-header { text-align: center; margin-bottom: clamp(2rem, 5vw, 4rem); }

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(168, 85, 247, 0.15), rgba(34, 211, 238, 0.15));
    border: 1px solid rgba(168, 85, 247, 0.3);
    border-radius: 50px;
    padding: 0.4rem 1rem;
    font-family: var(--font-display);
    font-size: 0.7rem;
    color: var(--accent-purple);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: 1rem;
}

.section-title { font-family: var(--font-display); font-size: clamp(1.75rem, 5vw, 3rem); font-weight: 700; margin-bottom: 0.5rem; }
.section-subtitle { font-size: clamp(1rem, 2vw, 1.1rem); color: var(--text-secondary); }

.section-formations { background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%); }

.filter-container { display: flex; justify-content: center; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 3rem; }

.filter-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-icon { width: 16px; height: 16px; }
.filter-btn:hover { border-color: var(--accent-cyan); color: var(--text-primary); }
.filter-btn.active { background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan)); border-color: transparent; color: white; }

.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.5rem; max-width: 1400px; margin: 0 auto; }

.course-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.course-card:hover { transform: translateY(-8px); border-color: rgba(255,255,255,0.2); box-shadow: 0 20px 40px rgba(0,0,0,0.3); }
.course-card[data-status="coming"] { opacity: 0.75; }
.course-card[data-status="coming"]:hover { opacity: 1; }

.course-header { padding: 1.5rem; display: flex; justify-content: space-between; align-items: flex-start; }

.course-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dev-icon { background: linear-gradient(135deg, rgba(168, 85, 247, 0.2), rgba(236, 72, 153, 0.2)); color: var(--dev-color); box-shadow: 0 0 25px var(--dev-glow); }
.geo-icon { background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(34, 211, 238, 0.2)); color: var(--geo-color); box-shadow: 0 0 25px var(--geo-glow); }
.drone-icon { background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(239, 68, 68, 0.2)); color: var(--drone-color); box-shadow: 0 0 25px var(--drone-glow); }
.soft-icon { background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(168, 85, 247, 0.2)); color: var(--soft-color); box-shadow: 0 0 25px var(--soft-glow); }

.course-status { padding: 0.3rem 0.75rem; border-radius: 50px; font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.status-available { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-coming { background: rgba(245, 158, 11, 0.15); color: var(--accent-orange); border: 1px solid rgba(245, 158, 11, 0.3); }

.course-body { padding: 0 1.5rem; flex: 1; }
.course-tags { display: flex; gap: 0.4rem; flex-wrap: wrap; margin-bottom: 0.75rem; }

.tag { padding: 0.2rem 0.5rem; border-radius: 4px; font-size: 0.65rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.tag-html { background: rgba(255, 107, 53, 0.15); color: var(--html-color); }
.tag-css { background: rgba(0, 212, 255, 0.15); color: var(--css-color); }
.tag-js { background: rgba(255, 217, 61, 0.15); color: var(--js-color); }
.tag-python { background: rgba(53, 114, 165, 0.15); color: var(--python-color); }
.tag-geo { background: rgba(16, 185, 129, 0.15); color: var(--geo-color); }
.tag-drone { background: rgba(245, 158, 11, 0.15); color: var(--drone-color); }
.tag-soft { background: rgba(59, 130, 246, 0.15); color: var(--soft-color); }
.tag-dev { background: rgba(168, 85, 247, 0.15); color: var(--dev-color); }
.tag-pro { background: rgba(236, 72, 153, 0.15); color: var(--accent-pink); }
.tag-regl { background: rgba(239, 68, 68, 0.15); color: #ef4444; }

.course-title { font-family: var(--font-display); font-size: 1.15rem; margin-bottom: 0.5rem; }
.course-desc { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; margin-bottom: 1rem; }
.course-meta { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.meta-item { display: flex; align-items: center; gap: 0.35rem; font-size: 0.8rem; color: var(--text-muted); }
.meta-icon { width: 14px; height: 14px; }

.course-footer { padding: 1.5rem; margin-top: auto; }

.course-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.85rem 1.5rem;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    font-family: var(--font-display);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.course-btn:hover { transform: scale(1.02); box-shadow: 0 8px 25px rgba(168, 85, 247, 0.4); }
.course-btn.btn-disabled { background: var(--glass-bg); border: 1px solid var(--glass-border); color: var(--text-muted); cursor: not-allowed; }
.course-btn.btn-disabled:hover { transform: none; box-shadow: none; }
.course-card.hidden { display: none; }

.section-domains { background: var(--bg-darker); }
.domains-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 0 auto; }

.domain-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius);
    padding: 2rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.domain-card:hover { transform: translateY(-5px); }
.domain-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 0.5rem; }
.domain-icon { width: 32px; height: 32px; }
.domain-header h3 { font-family: var(--font-display); font-size: 1.15rem; }
.domain-desc { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1.25rem; }
.domain-list { list-style: none; }
.domain-list li { display: flex; align-items: center; gap: 0.75rem; padding: 0.6rem 0; font-size: 0.9rem; color: var(--text-secondary); border-bottom: 1px solid var(--glass-border); }
.domain-list li:last-child { border-bottom: none; }
.item-status { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.item-status.available { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); }
.item-status.coming { background: var(--text-muted); }
.domain-glow { position: absolute; inset: 0; opacity: 0; transition: var(--transition-normal); pointer-events: none; }
.domain-card:hover .domain-glow { opacity: 1; }

.domain-dev .domain-icon { color: var(--dev-color); }
.domain-dev .domain-glow { background: radial-gradient(circle at top left, var(--dev-glow), transparent 70%); }
.domain-dev:hover { border-color: var(--dev-color); }
.domain-geo .domain-icon { color: var(--geo-color); }
.domain-geo .domain-glow { background: radial-gradient(circle at top left, var(--geo-glow), transparent 70%); }
.domain-geo:hover { border-color: var(--geo-color); }
.domain-drone .domain-icon { color: var(--drone-color); }
.domain-drone .domain-glow { background: radial-gradient(circle at top left, var(--drone-glow), transparent 70%); }
.domain-drone:hover { border-color: var(--drone-color); }
.domain-soft .domain-icon { color: var(--soft-color); }
.domain-soft .domain-glow { background: radial-gradient(circle at top left, var(--soft-glow), transparent 70%); }
.domain-soft:hover { border-color: var(--soft-color); }

.section-about { background: linear-gradient(180deg, var(--bg-darker) 0%, var(--bg-dark) 100%); }
.about-container { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; max-width: 1200px; margin: 0 auto; align-items: center; }
.about-content .section-badge, .about-content .section-title { text-align: left; }
.about-text { color: var(--text-secondary); margin-bottom: 1.25rem; line-height: 1.8; }
.about-text strong { color: var(--text-primary); }
.about-text em { color: var(--accent-cyan); font-style: normal; }
.about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin-top: 2rem; }
.feature { display: flex; gap: 1rem; align-items: flex-start; }
.feature-icon { flex-shrink: 0; color: var(--accent-cyan); }
.feature h4 { font-size: 0.95rem; margin-bottom: 0.25rem; }
.feature p { font-size: 0.8rem; color: var(--text-muted); }

.about-visual { display: flex; justify-content: center; }

.terminal-card {
    background: #1a1a2e;
    border-radius: var(--border-radius);
    overflow: hidden;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 25px 50px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.05);
}

.terminal-header { display: flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1rem; background: rgba(255,255,255,0.05); }
.terminal-dot { width: 12px; height: 12px; border-radius: 50%; }
.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27ca40; }
.terminal-title { margin-left: auto; font-family: var(--font-code); font-size: 0.75rem; color: var(--text-muted); }
.terminal-body { padding: 1.25rem; font-family: var(--font-code); font-size: 0.85rem; line-height: 1.7; }
.terminal-line { margin-bottom: 0.25rem; }
.terminal-line.indent { padding-left: 1.5rem; }
.prompt { color: var(--accent-cyan); margin-right: 0.5rem; }
.command { color: #d4d4d4; }
.prop { color: var(--html-color); }
.bool { color: var(--js-color); }
.array { color: var(--geo-color); }
.func { color: var(--accent-cyan); }
.cursor { display: inline-block; animation: cursorBlink 1s step-end infinite; color: var(--accent-cyan); }

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.section-author { background: linear-gradient(180deg, var(--bg-dark), var(--bg-darker)); padding: 80px 5%; }

.author-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(236,72,153,0.1));
    border: 1px solid rgba(99,102,241,0.3);
    border-radius: 24px;
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.author-card::before { content: ''; position: absolute; top: -50%; right: -20%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(99,102,241,0.2), transparent 70%); pointer-events: none; }
.author-visual { display: flex; flex-direction: column; align-items: center; gap: 1.5rem; }

.author-avatar {
    width: 140px;
    height: 140px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: 0 15px 40px rgba(99,102,241,0.4);
}

.author-avatar::before { content: ''; position: absolute; inset: -5px; border-radius: 50%; border: 2px solid var(--accent-cyan); animation: authorRing 3s ease-in-out infinite; }

@keyframes authorRing {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.5; }
}

.avatar-text { font-family: var(--font-display); font-size: 3rem; font-weight: 900; color: white; }
.author-brands { display: flex; flex-direction: column; gap: 0.5rem; }
.mini-brand { display: flex; align-items: center; gap: 0.5rem; padding: 0.4rem 0.85rem; background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 50px; font-size: 0.75rem; font-weight: 600; text-align: center; }
.mini-brand.toporahma { color: var(--geo-color); border-color: rgba(16,185,129,0.3); }
.mini-brand.ysi { color: var(--drone-color); border-color: rgba(245,158,11,0.3); }
.author-content { z-index: 1; }
.author-label { display: inline-block; font-size: 0.75rem; color: var(--accent-cyan); text-transform: uppercase; letter-spacing: 0.15em; margin-bottom: 0.5rem; }
.author-name { font-family: var(--font-display); font-size: clamp(1.5rem, 4vw, 2rem); margin-bottom: 0.25rem; }
.author-title { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 1.25rem; }
.author-bio { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; margin-bottom: 1.5rem; }
.author-bio strong { color: #6366f1; }
.author-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.author-btn { background: linear-gradient(135deg, #6366f1, #8b5cf6) !important; }
.author-btn:hover { box-shadow: 0 10px 30px rgba(99,102,241,0.4) !important; }

.footer { background: var(--bg-darker); padding: 4rem 5% 2rem; position: relative; }
.footer-content { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; max-width: 1200px; margin: 0 auto; padding-bottom: 2rem; border-bottom: 1px solid var(--glass-border); }
.footer-brand { text-align: left; }
.footer-logo { font-family: var(--font-display); font-size: 1.25rem; margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.15rem; }
.footer-tagline { color: var(--text-muted); font-size: 0.9rem; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.footer-column h4 { font-family: var(--font-display); font-size: 0.85rem; margin-bottom: 1rem; color: var(--text-primary); }
.footer-column ul { list-style: none; }
.footer-column li { margin-bottom: 0.5rem; }
.footer-column a { color: var(--text-muted); font-size: 0.85rem; transition: var(--transition-fast); }
.footer-column a:hover { color: var(--accent-cyan); }
.footer-column .soon { font-size: 0.7rem; color: var(--accent-orange); }
.footer-bottom { text-align: center; padding-top: 2rem; max-width: 1200px; margin: 0 auto; }
.footer-bottom p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 0.25rem; }
.footer-credit { display: flex; align-items: center; justify-content: center; gap: 0.25rem; }
.footer-credit .heart { color: #ef4444; animation: heartbeat 1s ease-in-out infinite; }

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.fab-portfolio {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.25rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 50px;
    color: white;
    font-family: var(--font-display);
    font-size: 0.85rem;
    box-shadow: 0 8px 25px rgba(99,102,241,0.4);
    z-index: 100;
    transition: var(--transition-normal);
}

.fab-portfolio:hover { transform: translateY(-5px); box-shadow: 0 12px 35px rgba(99,102,241,0.5); }
.fab-portfolio .fab-avatar { width: 28px; height: 28px; background: rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.7rem; font-weight: 700; }
.fab-portfolio .fab-text { display: none; }

@media (min-width: 768px) {
    .fab-portfolio .fab-text { display: inline; }
}

@media (max-width: 1024px) {
    .about-container { grid-template-columns: 1fr; gap: 3rem; }
    .about-content .section-badge, .about-content .section-title { text-align: center; }
    .about-text { text-align: center; }
    .about-features { max-width: 500px; margin-left: auto; margin-right: auto; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
    .footer-brand { text-align: center; }
    .footer-logo { justify-content: center; }
    .footer-links { justify-items: center; }
    .author-card { grid-template-columns: 1fr; text-align: center; padding: 2rem; }
    .author-visual { order: -1; }
    .author-brands { flex-direction: row; justify-content: center; }
    .author-cta { justify-content: center; }
}

@media (max-width: 768px) {
    html { font-size: 15px; }
    .navbar { padding: 0.75rem 4%; }
    .nav-links { position: fixed; top: 0; right: -100%; width: 75%; max-width: 300px; height: 100vh; flex-direction: column; background: rgba(10, 10, 15, 0.98); backdrop-filter: blur(20px); padding: 80px 2rem 2rem; gap: 0; transition: right var(--transition-normal); border-left: 1px solid var(--glass-border); z-index: 999; }
    .nav-links.active { right: 0; }
    .nav-links li { width: 100%; }
    .nav-link { display: block; padding: 1rem; font-size: 1rem; border-bottom: 1px solid var(--glass-border); }
    .menu-toggle { display: flex; }
    .hero { padding: 100px 4% 60px; }
    .hero-cta { flex-direction: column; align-items: center; }
    .btn-primary, .btn-secondary { width: 100%; max-width: 280px; justify-content: center; }
    .filter-container { gap: 0.4rem; }
    .filter-btn { padding: 0.5rem 0.9rem; font-size: 0.8rem; }
    .filter-btn span:last-child { display: none; }
    .filter-btn.active span:last-child { display: inline; }
    .courses-grid { grid-template-columns: 1fr; max-width: 450px; margin-left: auto; margin-right: auto; }
    .about-features { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: 1fr 1fr; }
    .fab-portfolio { padding: 0.75rem; border-radius: 50%; }
    .fab-portfolio .fab-avatar { width: 32px; height: 32px; }
}

@media (max-width: 480px) {
    html { font-size: 14px; }
    .hero { padding: 100px 4% 50px; }
    .hero-stats { gap: 1.5rem; }
    .section { padding: 50px 4%; }
    .filter-btn span:last-child { display: none; }
    .footer-links { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* Safe area for notched devices */
@supports (padding: env(safe-area-inset-top)) {
    .navbar { padding-top: max(1rem, env(safe-area-inset-top)); padding-left: max(5%, env(safe-area-inset-left)); padding-right: max(5%, env(safe-area-inset-right)); }
    .footer { padding-bottom: max(2rem, env(safe-area-inset-bottom)); }
    .fab-portfolio, .fab-platform { bottom: max(2rem, calc(env(safe-area-inset-bottom) + 1rem)); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}