/* --- Variables --- */
:root {
    --bg: #0f1114;
    --bg-soft: #161a1f;
    --text: #e8eaed;
    --text-muted: #9ca3af;
    --accent-blue: #5b7cfa;
    --accent-purple: #8b5cf6;
    --accent-violet: #6366f1;
    --gradient-hero: linear-gradient(135deg, #5b7cfa 0%, #8b5cf6 45%, #6366f1 100%);
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Space Grotesk', sans-serif;
    --space-unit: 1rem;
    --space-md: 1.25rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --max-width: 720px;
    --header-height: 4rem;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--bg);
    background-image:
        radial-gradient(ellipse 120% 80% at 50% -20%, rgba(91, 124, 250, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 80% 50% at 80% 50%, rgba(139, 92, 246, 0.04) 0%, transparent 50%);
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}

/* --- Banner (sticky header) --- */
.banner {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    padding: 0 var(--space-lg);
    background: rgba(15, 17, 20, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.logo {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.02em;
    color: var(--text);
    text-decoration: none;
    transition: box-shadow 0.2s ease, text-shadow 0.2s ease;
}
.logo:hover {
    color: var(--text);
    text-shadow: 0 0 20px rgba(139, 92, 246, 0.35);
}
.btn-contact {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1.25rem;
    color: var(--text);
    text-decoration: none;
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 6px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.btn-contact:hover {
    border-color: var(--accent-purple);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}

.contact-cta-wrap {
    text-align: center;
    margin-top: var(--space-lg);
}
.btn-contact-cta {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1.05rem;
    padding: 0.65rem 1.6rem;
    color: var(--text);
    text-decoration: none;
    border: 1px solid rgba(139, 92, 246, 0.4);
    border-radius: 6px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.btn-contact-cta:hover {
    border-color: var(--accent-purple);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}

/* --- Main --- */
main {
    padding: var(--space-xl) var(--space-lg) var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
}
.hero { text-align: center; }
.hero-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(2.25rem, 8vw, 3.5rem);
    letter-spacing: 0.04em;
    margin: 0 0 0.25em;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.tagline {
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 2.5vw, 1.1rem);
    color: var(--text-muted);
    margin: 0 0 var(--space-md);
    letter-spacing: 0.02em;
}
.avatar-wrap {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    min-height: 200px;
}
.avatar {
    width: min(420px, 85vw);
    height: min(420px, 85vw);
    max-width: 480px;
    max-height: 480px;
}
.avatar canvas { display: block; width: 100% !important; height: 100% !important; }
.avatar-fallback {
    position: absolute;
    width: min(300px, 60vw);
    height: min(300px, 60vw);
    max-width: 360px;
    max-height: 360px;
}
.avatar-fallback svg { width: 100%; height: 100%; }
.avatar-fallback[hidden] { display: none !important; }
.content {
    text-align: left;
    margin: 0 auto;
}
.content p {
    margin: 0 0 var(--space-unit);
    font-size: clamp(0.95rem, 2vw, 1.05rem);
    color: var(--text);
    max-width: 65ch;
    margin-left: auto;
    margin-right: auto;
}
.content p:last-child { margin-bottom: 0; }

/* --- Footer --- */
.site-footer {
    padding: var(--space-lg) var(--space-lg);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    background: var(--bg-soft);
}
.site-footer p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* --- Responsive --- */
@media (max-width: 480px) {
    .banner { padding: 0 var(--space-unit); }
    main { padding: var(--space-lg) var(--space-unit) var(--space-lg); }
    .avatar { width: min(360px, 85vw); height: min(360px, 85vw); }
}