/* ── Reset & Base ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg-primary: #0b0b0f;
    --bg-card: #131318;
    --border-subtle: #1e1e28;
    --border-hover: #2a2a38;
    --text-primary: #e8e8ec;
    --text-secondary: #8a8a96;
    --text-muted: #5a5a66;
    --accent-cyan: #00e5ff;
    --accent-green: #1ce586;
    --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

/* ── Subtle background grid ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
}

/* ── Layout ── */
.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 2rem;
    position: relative;
    z-index: 1;
}

/* ── Header ── */
.site-header {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border-subtle);
}

.site-header a {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity 0.2s;
}

.site-header a:hover { opacity: 0.8; }

.site-header img {
    height: 28px;
    width: auto;
}

.site-header span {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
}

/* ── Content ── */
.content {
    padding: 3rem 0 4rem;
    max-width: 720px;
}

.content h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.content h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.content h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.content p {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content ul {
    list-style: none;
    margin-bottom: 1rem;
}

.content ul li {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--text-secondary);
    padding-left: 1.2rem;
    position: relative;
    margin-bottom: 0.4rem;
    line-height: 1.7;
}

.content ul li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.content strong {
    font-weight: 500;
    color: var(--text-primary);
}

.content a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: opacity 0.2s;
}

.content a:hover { opacity: 0.7; }

.content em {
    font-style: italic;
    color: var(--text-muted);
}

.content .section-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 2.5rem 0;
    border: none;
}

.content .section-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    display: inline-block;
}

/* ── Contact form ── */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 300;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-cyan);
}

.form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-submit {
    display: inline-block;
    padding: 0.7rem 2rem;
    background: transparent;
    border: 1px solid var(--accent-cyan);
    color: var(--accent-cyan);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 400;
    border-radius: 6px;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: all 0.2s;
}

.form-submit:hover {
    background: rgba(0, 229, 255, 0.08);
}

.form-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

.form-message {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 300;
}

.form-message--success {
    background: rgba(28, 229, 134, 0.08);
    border: 1px solid rgba(28, 229, 134, 0.25);
    color: var(--accent-green);
}

.form-message--error {
    background: rgba(255, 80, 80, 0.08);
    border: 1px solid rgba(255, 80, 80, 0.25);
    color: #ff5050;
}

/* ── Footer ── */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border-subtle);
    padding: 2rem 0;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 300;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.footer-links a {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ── Responsive ── */
@media (max-width: 640px) {
    .content h1 { font-size: 1.4rem; }
    .form-row { grid-template-columns: 1fr; }
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
}