:root {
    --ink: #0b1210;
    --ink-soft: #14201c;
    --fog: #e8f0ec;
    --mist: #b7c9c0;
    --mint: #3dcc9c;
    --mint-deep: #1f9a70;
    --sand: #f4efe6;
    --warn: #e8a54b;
    --font-display: "Fraunces", Georgia, serif;
    --font-body: "DM Sans", system-ui, sans-serif;
}

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

body {
    font-family: var(--font-body);
    color: var(--fog);
    background: var(--ink);
    line-height: 1.55;
}

a { color: inherit; }

.container {
    width: min(1120px, calc(100% - 2.5rem));
    margin-inline: auto;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 20;
    backdrop-filter: blur(12px);
    background: color-mix(in srgb, var(--ink) 82%, transparent);
    border-bottom: 1px solid color-mix(in srgb, var(--mist) 18%, transparent);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.nav-brand {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.35rem;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--mist);
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-links a:hover { color: var(--fog); }

.nav-cta {
    background: var(--mint) !important;
    color: var(--ink) !important;
    padding: 0.45rem 0.9rem;
    border-radius: 999px;
}

.hero {
    position: relative;
    padding: 4.5rem 0 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(900px 420px at 12% 10%, color-mix(in srgb, var(--mint) 28%, transparent), transparent 60%),
        radial-gradient(700px 380px at 88% 0%, color-mix(in srgb, var(--warn) 18%, transparent), transparent 55%),
        linear-gradient(180deg, var(--ink-soft), var(--ink));
    z-index: 0;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    align-items: center;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.72rem;
    color: var(--mint);
    font-weight: 600;
    margin-bottom: 0.85rem;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4.5vw, 3.4rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
    max-width: 14ch;
}

.hero-subtitle {
    margin-top: 1rem;
    color: var(--mist);
    font-size: 1.08rem;
    max-width: 36rem;
}

.hero-note {
    margin-top: 1.25rem;
    color: color-mix(in srgb, var(--mist) 80%, transparent);
    font-size: 0.88rem;
    max-width: 34rem;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.6rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: 0;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
    border-radius: 999px;
    padding: 0.75rem 1.25rem;
    transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
    background: var(--mint);
    color: var(--ink);
}

.btn-primary:hover { background: #55dbad; }

.btn-secondary {
    background: transparent;
    color: var(--fog);
    border: 1px solid color-mix(in srgb, var(--mist) 35%, transparent);
}

.btn-outline {
    width: 100%;
    background: transparent;
    color: var(--fog);
    border: 1px solid color-mix(in srgb, var(--mist) 35%, transparent);
}

.code-preview, .code-example {
    background: #07110e;
    border: 1px solid color-mix(in srgb, var(--mint) 22%, transparent);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.code-header {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid color-mix(in srgb, var(--mist) 16%, transparent);
}

.code-dot {
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--mist) 40%, transparent);
}

.code-label {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--mist);
}

.code-preview pre, .code-block {
    margin: 0;
    padding: 1.1rem 1.15rem 1.3rem;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.82rem;
    color: #d7ece3;
    line-height: 1.55;
}

.features, .comparison, .pricing, .documentation, .cta-band {
    padding: 4.5rem 0;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    letter-spacing: -0.02em;
}

.section-subtitle {
    color: var(--mist);
    margin-top: 0.6rem;
    max-width: 40rem;
}

.features-grid, .pricing-grid {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.features-grid {
    grid-template-columns: repeat(3, 1fr);
}

.feature-card, .pricing-card {
    background: color-mix(in srgb, var(--ink-soft) 88%, white 4%);
    border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
    border-radius: 1rem;
    padding: 1.35rem;
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    margin-bottom: 0.45rem;
}

.feature-card p { color: var(--mist); font-size: 0.95rem; }

.comparison-table {
    margin-top: 1.75rem;
    overflow-x: auto;
    border-radius: 1rem;
    border: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--ink-soft);
}

th, td {
    text-align: left;
    padding: 0.9rem 1.1rem;
    border-bottom: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
}

th { color: var(--mist); font-weight: 600; font-size: 0.85rem; }

td.check { color: var(--mint); font-weight: 600; }
td.cross { color: var(--mist); }

.pricing-grid { grid-template-columns: repeat(3, 1fr); }

.pricing-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pricing-card.featured {
    border-color: color-mix(in srgb, var(--mint) 45%, transparent);
    background:
        linear-gradient(180deg, color-mix(in srgb, var(--mint) 12%, transparent), transparent 40%),
        color-mix(in srgb, var(--ink-soft) 88%, white 4%);
}

.pricing-badge {
    align-self: flex-start;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--mist);
}

.pricing-badge.popular { color: var(--mint); }

.pricing-card h3 {
    font-family: var(--font-display);
    font-size: 1.55rem;
}

.price {
    display: flex;
    align-items: baseline;
    gap: 0.2rem;
}

.currency { color: var(--mist); }
.amount {
    font-family: var(--font-display);
    font-size: 3rem;
    line-height: 1;
}
.period, .amount-text { color: var(--mist); }
.amount-text {
    font-family: var(--font-display);
    font-size: 1.8rem;
    color: var(--fog);
}

.pricing-features {
    list-style: none;
    color: var(--mist);
    display: grid;
    gap: 0.45rem;
    flex: 1;
    font-size: 0.95rem;
}

.docs-content {
    margin-top: 2rem;
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 1.5rem;
    align-items: start;
}

.steps {
    display: grid;
    gap: 0.85rem;
    margin: 0 0 1.25rem;
    padding-left: 1.1rem;
    color: var(--mist);
}

.steps strong { color: var(--fog); }
.steps code {
    font-size: 0.85em;
    background: color-mix(in srgb, var(--mint) 12%, transparent);
    padding: 0.1rem 0.35rem;
    border-radius: 0.3rem;
}

.code-tabs {
    display: flex;
    gap: 0.35rem;
    padding: 0.65rem;
    border-bottom: 1px solid color-mix(in srgb, var(--mist) 14%, transparent);
}

.code-tab {
    border: 0;
    background: transparent;
    color: var(--mist);
    font: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 0.7rem;
    border-radius: 999px;
    cursor: pointer;
}

.code-tab.active {
    background: color-mix(in srgb, var(--mint) 18%, transparent);
    color: var(--fog);
}

.code-block { display: none; }
.code-block.active { display: block; }

.cta-band {
    text-align: center;
    background:
        radial-gradient(600px 240px at 50% 0%, color-mix(in srgb, var(--mint) 22%, transparent), transparent 70%),
        var(--ink-soft);
    border-block: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
}

.cta-band h2 {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
}

.cta-band p {
    color: var(--mist);
    margin: 0.6rem 0 1.25rem;
}

.footer {
    padding: 2.5rem 0 1.5rem;
    color: var(--mist);
    font-size: 0.92rem;
}

.footer-row {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-row a {
    margin-right: 1rem;
    text-decoration: none;
}

.footer-row a:hover { color: var(--fog); }

.footer-bottom {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid color-mix(in srgb, var(--mist) 12%, transparent);
    font-size: 0.82rem;
}

/* Developers portal */
.developers-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.developers-brand {
    padding: 3rem;
    background:
        radial-gradient(700px 360px at 20% 20%, color-mix(in srgb, var(--mint) 24%, transparent), transparent 65%),
        var(--ink-soft);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.developers-brand h1 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    max-width: 12ch;
    line-height: 1.1;
}

.developers-panel {
    padding: 3rem;
    background: var(--sand);
    color: var(--ink);
}

.developers-panel h2 {
    font-family: var(--font-display);
    margin-bottom: 0.35rem;
}

.muted { color: #5d6b64; font-size: 0.95rem; }

.auth-form {
    margin-top: 1.5rem;
    display: grid;
    gap: 0.85rem;
}

.auth-form label {
    display: grid;
    gap: 0.35rem;
    font-size: 0.9rem;
    font-weight: 600;
}

.auth-form input {
    border: 1px solid #c9d4ce;
    border-radius: 0.65rem;
    padding: 0.75rem 0.85rem;
    font: inherit;
    background: white;
}

.auth-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 0.35rem;
}

.auth-actions .btn-primary { background: var(--mint-deep); color: white; }
.auth-actions .btn-secondary {
    border-color: #b7c4bc;
    color: var(--ink);
}

.session-card, .plan-chip {
    margin-top: 1.25rem;
    padding: 1rem;
    border-radius: 0.85rem;
    background: white;
    border: 1px solid #d5dfd8;
}

.session-card pre {
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 0.78rem;
    background: #eef4f0;
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin-top: 0.65rem;
}

.plan-chip {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
}

.form-message {
    min-height: 1.25rem;
    font-size: 0.9rem;
}

.form-message.error { color: #b42318; }
.form-message.success { color: var(--mint-deep); }

@media (max-width: 900px) {
    .hero-grid,
    .features-grid,
    .pricing-grid,
    .docs-content,
    .developers-shell {
        grid-template-columns: 1fr;
    }

    .nav-links a:not(.nav-cta) { display: none; }
    .developers-brand { min-height: 280px; }
}