:root {
    --bg: #050609;
    --panel: rgba(10, 10, 14, 0.95);
    --accent: #39ff88;
    --accent-2: #f5f5f5;
    --text: #f7f7f7;
    --muted: #8c8c8c;
    --gradient: linear-gradient(135deg, #39ff88, #f5f5f5 55%, #999);
    --shadow: 0 25px 70px rgba(0, 0, 0, 0.35);
    font-family: 'Space Grotesk', system-ui, -apple-system, "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        radial-gradient(circle at 15% 15%, rgba(57,255,136,0.08), transparent 25%),
        radial-gradient(circle at 85% 0%, rgba(255,255,255,0.08), transparent 30%),
        var(--bg);
    color: var(--text);
}

.layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px 64px;
}

header {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    align-items: center;
}

.language-bar {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-bottom: 16px;
}

.lang-btn {
    padding: 8px 12px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text);
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.lang-btn:hover {
    transform: translateY(-2px);
    border-color: rgba(57, 255, 136, 0.6);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.lang-btn.active {
    background: linear-gradient(135deg, rgba(57, 255, 136, 0.22), rgba(255, 255, 255, 0.06));
    border-color: rgba(57, 255, 136, 0.8);
    color: #eafff5;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55);
}

.hero-card {
    background: rgba(7,7,10,0.96);
    border: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 18px 40px rgba(0,0,0,0.7);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.06);
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.02em;
}

.mini-bio {
    margin: 4px 0 10px;
    font-size: 14px;
    color: var(--muted);
    opacity: 0.9;
}

h1 {
    font-size: clamp(32px, 5vw, 48px);
    margin: 12px 0 8px;
    line-height: 1.1;
}

p.lead {
    color: var(--muted);
    font-size: 18px;
    margin: 0 0 20px;
}

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

.btn {
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    font-weight: 600;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
}

.btn.primary {
    background: linear-gradient(135deg, #39ff88, #0b0f12);
    color: #f7f7f7;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    border: 1px solid rgba(57,255,136,0.6);
}

.btn:hover {
    transform: translateY(-2px);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
}

.stat {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 14px 16px;
}

.stat .value {
    font-size: 26px;
    font-weight: 700;
}

.stat .label {
    color: var(--muted);
    margin-top: 4px;
    font-size: 14px;
}

.section-title {
    margin: 48px 0 16px;
    font-size: 22px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title::after {
    content: "";
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, rgba(255,255,255,0.2), transparent);
    border-radius: 999px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}

.card {
    background: rgba(7,7,10,0.96);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 18px;
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, border 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(124, 248, 255, 0.4);
}

.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(124, 248, 255, 0.12), transparent 40%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:hover::before {
    opacity: 1;
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.tag {
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(57, 255, 136, 0.08);
    color: #39ff88;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.01em;
    font-family: "JetBrains Mono", "Fira Code", monospace;
}

.timeline {
    border-left: 2px solid rgba(255, 255, 255, 0.08);
    margin-left: 12px;
    padding-left: 18px;
    display: grid;
    gap: 18px;
}

.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: "";
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gradient);
    position: absolute;
    left: -25px;
    top: 6px;
    box-shadow: 0 0 0 6px rgba(124, 248, 255, 0.12);
}

code {
    background: #050609;
    padding: 12px 14px 14px;
    border-radius: 14px;
    display: block;
    color: #e5e5e5;
    border: 1px solid rgba(255,255,255,0.08);
    overflow-x: auto;
    font-family: "JetBrains Mono","Fira Code",monospace;
    position: relative;
    padding-top: 26px;
}

code::before {
    content: "olexander@portfolio:~$";
    position: absolute;
    top: 8px;
    left: 14px;
    font-size: 11px;
    color: #39ff88;
    opacity: 0.8;
}

.ascii-banner {
    font-family: "JetBrains Mono","Fira Code",monospace;
    font-size: clamp(8px, 1.5vw, 10px);
    line-height: 1.2;
    color: #39ff88;
    margin: 0 0 12px;
    white-space: pre;
    text-shadow: 0 0 6px rgba(57,255,136,0.6);
    overflow: auto;
    max-width: 100%;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ascii-banner::-webkit-scrollbar {
    display: none;
}

.small-note {
    font-size: 14px;
    margin-top: 12px;
    opacity: 0.85;
}

.layout::before {
    content: "01001001 01010100 00100000 01001100 01000001 01000010 01010011";
    position: fixed;
    top: 10%;
    right: 3%;
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    line-height: 1.6;
    color: rgba(255,255,255,0.03);
    writing-mode: vertical-rl;
    pointer-events: none;
    z-index: -1;
}

footer {
    margin-top: 48px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    color: var(--muted);
    font-size: 14px;
}