/* ═══════════════════════════════════════════════════════
   ctrlTAB — Website
   Colors and typography match the ctrlTAB light theme.
   ═══════════════════════════════════════════════════════ */

/* --- Variables (ctrlTAB light theme) --- */
:root {
    --color-accent:       #e2003d;
    --color-success:      #198754;
    --color-bg-primary:   #ffffff;
    --color-bg-secondary: #f8f9fa;
    --color-bg-tertiary:  #e9ecef;
    --color-text-primary:   #212529;
    --color-text-secondary: #495057;
    --color-text-muted:     #868e96;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    --radius: 8px;
    --max-width: 960px;
}

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

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

/* --- Layout --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ── Navigation ──────────────────────────────────────── */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    text-decoration: none;
}

.logo-accent {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.15s;
}

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

.nav-cta {
    font-weight: 600 !important;
    color: var(--color-text-primary) !important;
}

/* ── Hero ────────────────────────────────────────────── */

.hero {
    padding: 7rem 0 6rem;
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.hero-label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.hero-heading {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.08;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    line-height: 1.75;
    margin-bottom: 2.5rem;
}

.hero-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* ── Buttons ─────────────────────────────────────────── */

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 0.65rem 1.4rem;
    background: var(--color-text-primary);
    color: #ffffff;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.15s;
}

.btn-primary:hover {
    opacity: 0.82;
}

.btn-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.15s;
}

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

/* ── Highlights strip ────────────────────────────────── */

.highlights {
    padding: 3.5rem 0;
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.highlight {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.highlight-icon {
    font-size: 1.4rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.highlight h3 {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-primary);
    margin-bottom: 0.35rem;
}

.highlight p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ── Sections ────────────────────────────────────────── */

.section {
    padding: 5rem 0;
}

.section-alt {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-bg-tertiary);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.4rem;
}

.section-sub {
    font-size: 0.975rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
}

/* ── Quick Start steps ───────────────────────────────── */

.steps {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
}

.step {
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
}

.step-num {
    flex-shrink: 0;
    width: 1.9rem;
    height: 1.9rem;
    border-radius: 50%;
    background: var(--color-accent);
    color: #ffffff;
    font-size: 0.78rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 0.2rem;
}

.step-body h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.step-body pre {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-bg-tertiary);
    border-radius: var(--radius);
    padding: 0.8rem 1.1rem;
    font-family: var(--font-mono);
    font-size: 0.84rem;
    overflow-x: auto;
    color: var(--color-text-primary);
    line-height: 1.6;
}

.step-note {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.step-note code {
    font-family: var(--font-mono);
    font-size: 0.85em;
    background: var(--color-bg-tertiary);
    padding: 0.1em 0.35em;
    border-radius: 3px;
}

/* ── Roadmap ─────────────────────────────────────────── */

.roadmap-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.roadmap-col-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.roadmap-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.roadmap-list li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    padding-left: 1.6rem;
    position: relative;
}

.roadmap-list.done li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
}

.roadmap-list.upcoming li::before {
    content: '–';
    position: absolute;
    left: 0;
    color: var(--color-text-muted);
}

/* ── Footer ──────────────────────────────────────────── */

.footer {
    border-top: 1px solid var(--color-bg-tertiary);
    padding: 1.75rem 0;
}

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

.footer-copy {
    font-size: 0.84rem;
    color: var(--color-text-muted);
}

.footer-link {
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.15s;
}

.footer-link:hover {
    color: var(--color-text-primary);
}

/* ── Responsive ──────────────────────────────────────── */

@media (max-width: 768px) {
    .highlights-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .roadmap-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 4rem 0 3.5rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .nav-links {
        gap: 1.25rem;
    }

    .footer-inner {
        flex-direction: column;
        align-items: flex-start;
    }
}