/* Gjallarhorn.watch -- Norse x Tech dark design */
/* Palette derived from logo: dark slate-teal, electric cyan, steel silver */

:root {
    --bg:           #0b1520;
    --bg-surface:   #111e2d;
    --bg-raised:    #162435;
    --accent:       #00b8d9;
    --accent-dim:   rgba(0, 184, 217, 0.15);
    --accent-glow:  rgba(0, 184, 217, 0.08);
    --silver:       #a8bece;
    --text-primary: #d4e4ef;
    --text-muted:   #6e8a9e;
    --border:       rgba(0, 184, 217, 0.12);
    --border-hard:  rgba(0, 184, 217, 0.25);
    --gold:         #c9a84c;
    --code-bg:      #0a121c;

    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-sans: 'Inter', -apple-system, sans-serif;
    --radius: 4px;
    --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.65;
}

/* --- CONTAINER ------------------------------------------------- */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}

/* --- LAUNCH BANNER --------------------------------------------- */
/* (inline-styled in HTML -- no override needed) */

/* --- HERO ------------------------------------------------------ */
.hero {
    padding: 100px 0 90px;
    text-align: center;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(0,184,217,0.07) 0%, transparent 70%),
        radial-gradient(ellipse 40% 30% at 20% 80%, rgba(0,100,140,0.05) 0%, transparent 60%);
}

/* faint horizontal rule at bottom of hero */
.hero::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}

.logo-section {
    margin-bottom: 40px;
}

.site-logo {
    width: 160px;
    height: 160px;
    object-fit: contain;
    display: block;
    margin: 0 auto 28px;
    filter: drop-shadow(0 0 18px rgba(0,184,217,0.35));
    transition: filter var(--transition);
}

.site-logo:hover {
    filter: drop-shadow(0 0 28px rgba(0,184,217,0.55));
}

/* hide ASCII fallback when logo loads */
.ascii-logo { display: none; }

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 28px;
}

.hero-lead {
    font-size: 1.15rem;
    max-width: 640px;
    margin: 0 auto 16px;
    color: var(--text-primary);
    line-height: 1.6;
}

.hero-problem {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.cta {
    display: inline-block;
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 14px 44px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: background var(--transition), box-shadow var(--transition);
    box-shadow: 0 0 20px rgba(0,184,217,0.25);
}

.cta:hover {
    background: #16ccee;
    box-shadow: 0 0 30px rgba(0,184,217,0.45);
}

/* --- SHARED SECTION TITLES ------------------------------------- */
.architecture h2,
.waitlist h2,
.pricing h2,
.documentation h2 {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
}

.norse-header {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 44px;
}

/* --- ARCHITECTURE ---------------------------------------------- */
.architecture {
    padding: 90px 0;
    position: relative;
}

.architecture::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}
.architecture::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
    margin-bottom: 50px;
}

.card {
    padding: 28px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.card:hover {
    border-color: var(--border-hard);
    box-shadow: 0 4px 24px rgba(0,184,217,0.1), inset 0 0 0 1px rgba(0,184,217,0.05);
    transform: translateY(-2px);
}

.layer-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 14px;
    padding: 3px 8px;
    border: 1px solid var(--border-hard);
    border-radius: 2px;
    letter-spacing: 0.06em;
    background: var(--accent-glow);
}

.card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.card p {
    font-size: 0.875rem;
    line-height: 1.65;
    color: var(--text-muted);
}

.metrics-bar {
    display: flex;
    justify-content: space-around;
    text-align: center;
    padding: 28px 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    flex-wrap: wrap;
    gap: 24px;
}

.metric { display: flex; flex-direction: column; gap: 6px; }

.metric-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

/* --- WAITLIST -------------------------------------------------- */
.waitlist {
    padding: 90px 0;
    background:
        radial-gradient(ellipse 60% 40% at 50% 100%, rgba(0,100,140,0.06) 0%, transparent 70%);
}

.waitlist-form {
    max-width: 580px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group { display: flex; flex-direction: column; }

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 7px;
    color: var(--silver);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 11px 14px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,184,217,0.12);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%236e8a9e' d='M0 0l6 8 6-8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-group select option { background: var(--bg-raised); }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.submit-btn {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 12px 36px;
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: background var(--transition), box-shadow var(--transition);
    margin-top: 6px;
    box-shadow: 0 0 16px rgba(0,184,217,0.2);
}

.submit-btn:hover {
    background: #16ccee;
    box-shadow: 0 0 28px rgba(0,184,217,0.4);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.thank-you {
    text-align: center;
    padding: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--accent-glow);
}

.thank-you p {
    font-size: 1.05rem;
    color: var(--accent);
    font-style: italic;
}

/* --- PRICING --------------------------------------------------- */
.pricing {
    padding: 90px 0;
    position: relative;
}

.pricing::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin: 50px 0;
}

.pricing-card {
    border: 1px solid var(--border);
    padding: 36px 28px;
    border-radius: var(--radius);
    background: var(--bg-surface);
    display: flex;
    flex-direction: column;
    gap: 18px;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
    border-color: var(--border-hard);
    box-shadow: 0 4px 24px rgba(0,184,217,0.08);
}

.pricing-card.featured {
    border-color: var(--border-hard);
    background: var(--bg-raised);
    box-shadow: 0 0 0 1px rgba(0,184,217,0.08) inset,
                0 8px 40px rgba(0,0,0,0.4);
    position: relative;
}

.pricing-card.featured::before {
    content: 'PRO';
    position: absolute;
    top: -10px;
    left: 28px;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--bg);
    background: var(--accent);
    padding: 2px 8px;
    border-radius: 2px;
}

.pricing-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
}

.pricing-features {
    list-style: none;
    flex-grow: 1;
}

.pricing-features li {
    font-size: 0.875rem;
    color: var(--text-muted);
    padding: 7px 0;
    line-height: 1.6;
    border-bottom: 1px solid rgba(0,184,217,0.06);
}

.pricing-features li:last-child { border-bottom: none; }

.pricing-features li::before {
    content: '-- ';
    color: var(--accent);
    font-family: var(--font-mono);
}

.buy-tokens-btn {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 11px 28px;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: background var(--transition), box-shadow var(--transition);
    box-shadow: 0 0 14px rgba(0,184,217,0.2);
}

.buy-tokens-btn:hover {
    background: #16ccee;
    box-shadow: 0 0 24px rgba(0,184,217,0.4);
}

.pricing-note {
    text-align: center;
    font-size: 0.825rem;
    color: var(--text-muted);
}

/* --- DOCUMENTATION --------------------------------------------- */
.documentation {
    padding: 90px 0;
    position: relative;
}

.documentation::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}

.tabs { margin-top: 44px; }

.tab-buttons {
    display: flex;
    border-bottom: 1px solid var(--border);
    margin-bottom: 36px;
    flex-wrap: wrap;
    gap: 0;
}

.tab-btn {
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 11px 22px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    font-family: var(--font-sans);
    letter-spacing: 0.02em;
    transition: color var(--transition), border-color var(--transition);
    margin-bottom: -1px;
}

.tab-btn:hover { color: var(--text-primary); }

.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active {
    display: block;
    animation: fadeIn 0.25s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.tab-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 28px 0 12px;
    color: var(--text-primary);
    border-left: 3px solid var(--accent);
    padding-left: 12px;
}

.tab-content h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin: 20px 0 8px;
    color: var(--silver);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    font-size: 0.78rem;
}

.tab-content p {
    margin: 10px 0;
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--text-muted);
}

.tab-content ul {
    margin: 10px 0;
    padding-left: 0;
    list-style: none;
}

.tab-content li {
    margin: 6px 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    padding-left: 16px;
    position: relative;
}

.tab-content li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--accent);
}

.tab-content code {
    font-family: var(--font-mono);
    font-size: 0.82rem;
    background: var(--code-bg);
    padding: 2px 6px;
    border-radius: 2px;
    color: var(--accent);
    border: 1px solid var(--border);
}

.tab-content pre {
    background: var(--code-bg);
    padding: 20px;
    border-radius: var(--radius);
    overflow-x: auto;
    margin: 12px 0;
    border: 1px solid var(--border);
}

.tab-content pre code {
    background: transparent;
    padding: 0;
    color: var(--text-primary);
    font-size: 0.8rem;
    line-height: 1.6;
    border: none;
}

/* API table */
.api-table {
    width: 100%;
    margin: 16px 0;
    border-collapse: collapse;
    font-size: 0.85rem;
    border: 1px solid var(--border);
}

.api-table th, .api-table td {
    padding: 10px 14px;
    text-align: left;
    border: 1px solid var(--border);
    vertical-align: top;
}

.api-table th {
    background: rgba(0,184,217,0.05);
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--silver);
}

.api-table td { color: var(--text-muted); }
.api-table td code { font-size: 0.78rem; word-break: break-word; }

.snippets-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 28px;
}

.snippet-section h4 { margin-top: 0; }

/* --- FOOTER ---------------------------------------------------- */
.footer {
    padding: 60px 0;
    text-align: center;
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-hard), transparent);
}

.heimdall {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 28px;
    color: var(--accent);
    letter-spacing: 0.06em;
    font-style: italic;
}

.footer-nav {
    font-size: 0.875rem;
    margin-bottom: 18px;
}

.footer-nav a, .footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

.footer-nav a:hover, .footer-legal a:hover { color: var(--accent); }

.sep { color: var(--border-hard); margin: 0 10px; }

.footer-legal { font-size: 0.825rem; margin-bottom: 28px; }

.copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.7;
    letter-spacing: 0.04em;
}

/* --- LAUNCH BANNER tweaks -------------------------------------- */
/* (inline styles in HTML use #1a1a1a -- we keep that, accent colour matches gold) */

/* --- RESPONSIVE ------------------------------------------------ */
@media (max-width: 767px) {
    .container { padding: 0 20px; }

    .hero { padding: 64px 0 60px; }
    .site-logo { width: 120px; height: 120px; }
    .hero h1 { font-size: 1.9rem; letter-spacing: 0.12em; }
    .hero-lead { font-size: 1rem; }

    .architecture,
    .waitlist,
    .pricing,
    .documentation,
    .footer { padding: 60px 0; }

    .architecture h2,
    .waitlist h2,
    .pricing h2,
    .documentation h2 { font-size: 1.5rem; }

    .cards-grid { grid-template-columns: 1fr; }
    .metrics-bar { flex-direction: column; align-items: center; }
    .pricing-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }

    .tab-btn { padding: 9px 14px; font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.5rem; }
}