/* ══════════════════════════════════════════════════════════════
   ZetaScripts — Shared styles for sub-pages
   (matches the theme used in index.html)
   ══════════════════════════════════════════════════════════════ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

:root {
    --bg: #080613;
    --bg-card: rgba(28, 28, 28, 0.92);
    --bg-elevated: #1c1c1c;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.14);
    --text: #eaf0f6;
    --text-muted: #7a8a9e;
    --text-dim: #4a5a6e;
    --accent: #196fff;
    --accent-light: #9b73ff;
    --accent-glow: rgba(147, 0, 245, 0.28);
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --gradient: linear-gradient(135deg, #9300f5 0%, #196fff 100%);
    --gradient-text: linear-gradient(135deg, #bf75ff 0%, #62a4ff 100%);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow: 0 20px 60px -15px rgba(0, 0, 0, 0.6);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; overflow-x: hidden; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

/* ── Background ── */
.bg-grid {
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -3;
    pointer-events: none;
}
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.5;
}
.bg-glow-1 { width: 500px; height: 500px; background: rgba(147, 0, 245, 0.22); top: -150px; right: -100px; }
.bg-glow-2 { width: 400px; height: 400px; background: rgba(25, 111, 255, 0.18); bottom: 10%; left: -120px; }

/* ── Navbar ── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    background: rgba(7, 9, 13, 0.75);
    border-bottom: 1px solid var(--border);
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
}
.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    background: var(--gradient);
    color: #fff;
}
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: -0.5px; }
.brand-accent { background: var(--gradient-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.nav-links { display: flex; gap: 28px; align-items: center; }
.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}
.nav-link:hover { color: var(--text); }
.nav-ico { width: 18px; height: 18px; flex: 0 0 auto; display: none; }
.nav-link-feed {
    color: var(--accent-light);
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, var(--accent-light) 40%, transparent);
    background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.nav-link-feed:hover { color: #fff; border-color: var(--accent-light); background: color-mix(in srgb, var(--accent) 26%, transparent); }
.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    background: var(--gradient);
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}
.btn-nav:hover { transform: translateY(-1px); box-shadow: 0 8px 25px var(--accent-glow); }

/* ── Page shell ── */
.page-wrap { max-width: 1000px; margin: 0 auto; padding: 72px 24px 40px; }
.page-wrap.wide { max-width: 1200px; }

.page-header { text-align: center; margin-bottom: 56px; }
.page-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    color: var(--accent-light);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}
.page-title {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 16px;
}
.page-title .grad { background: var(--gradient-text); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.page-lead {
    max-width: 640px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 18px;
}

/* ── Content typography ── */
.prose h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 40px 0 14px;
    letter-spacing: -0.4px;
}
.prose h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 26px 0 10px;
    color: var(--text);
}
.prose p { color: var(--text-muted); margin-bottom: 14px; }
.prose ul { color: var(--text-muted); margin: 0 0 16px 20px; }
.prose li { margin-bottom: 8px; }
.prose a { color: var(--accent-light); text-decoration: none; }
.prose a:hover { text-decoration: underline; }
.prose strong { color: var(--text); }
.updated { color: var(--text-dim); font-size: 13px; margin-bottom: 32px; }

/* ── Cards & grids ── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}
.card:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.feat-icon {
    width: 46px;
    height: 46px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent-light);
    margin-bottom: 16px;
}
.card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.card p { color: var(--text-muted); font-size: 14px; }

/* ── Pricing ── */
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 40px; }
.price-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    flex-direction: column;
}
.price-card.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-glow), var(--shadow); }
.price-tag { font-size: 40px; font-weight: 800; margin: 12px 0 4px; }
.price-tag span { font-size: 15px; font-weight: 500; color: var(--text-muted); }
.plan-name { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--accent-light); }
.plan-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 16px; }
.plan-list { list-style: none; margin: 20px 0; flex: 1; }
.plan-list li { padding: 8px 0 8px 26px; position: relative; color: var(--text-muted); font-size: 14px; }
.plan-list li::before {
    content: '';
    position: absolute;
    left: 0; top: 13px;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.15);
    box-shadow: inset 0 0 0 2px var(--accent);
}
.btn-plan {
    display: block;
    text-align: center;
    padding: 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    border: 1px solid var(--border-hover);
    color: var(--text);
    transition: var(--transition);
}
.btn-plan:hover { border-color: var(--accent); }
.btn-plan.primary { background: var(--gradient); border: none; color: #fff; }

/* ── Code blocks ── */
.code {
    background: #0b0f16;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 18px 20px;
    overflow-x: auto;
    font-family: 'JetBrains Mono', ui-monospace, monospace;
    font-size: 13.5px;
    color: #cbd5e1;
    margin: 14px 0 22px;
    line-height: 1.7;
}
.code .tok-k { color: #34d399; }
.code .tok-s { color: #7dd3fc; }
.code .tok-c { color: #64748b; }
.endpoint {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 14px;
    margin-bottom: 8px;
}
.method { padding: 3px 10px; border-radius: 6px; font-size: 12px; font-weight: 700; }
.method.get { background: rgba(6,182,212,0.15); color: #22d3ee; }
.method.post { background: rgba(16,185,129,0.15); color: #34d399; }
.method.del { background: rgba(239,68,68,0.15); color: #f87171; }

/* ── Blog ── */
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-top: 40px; }
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}
.blog-card:hover { border-color: var(--border-hover); transform: translateY(-4px); }
.blog-cover { height: 160px; background: var(--gradient); opacity: 0.85; }
.blog-cover.c2 { background: linear-gradient(135deg, #06b6d4, #6366f1); }
.blog-cover.c3 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.blog-body { padding: 22px; }
.blog-tag { font-size: 12px; font-weight: 600; color: var(--accent-light); text-transform: uppercase; letter-spacing: 1px; }
.blog-body h3 { font-size: 18px; font-weight: 700; margin: 8px 0; }
.blog-body p { color: var(--text-muted); font-size: 14px; }
.blog-meta { color: var(--text-dim); font-size: 12px; margin-top: 14px; }

/* ── Blog: featured, filters, article extras ── */
.blog-featured {
    display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
    margin-top: 40px; border: 1px solid var(--border); border-radius: var(--radius);
    overflow: hidden; text-decoration: none; color: inherit; transition: var(--transition);
    background: var(--bg-card);
}
.blog-featured:hover { border-color: var(--border-hover); transform: translateY(-3px); }
.blog-featured-cover { min-height: 260px; background: var(--gradient); opacity: 0.9; }
.blog-featured-cover.c2 { background: linear-gradient(135deg, #06b6d4, #6366f1); }
.blog-featured-cover.c3 { background: linear-gradient(135deg, #8b5cf6, #ec4899); }
.blog-featured-body { padding: 36px; display: flex; flex-direction: column; justify-content: center; }
.blog-featured-body h2 { font-size: 28px; font-weight: 800; margin: 10px 0 12px; }
.blog-featured-body p { color: var(--text-muted); font-size: 15px; line-height: 1.6; }

.blog-filters { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-top: 40px; }
.blog-search {
    flex: 1; min-width: 220px; max-width: 320px; padding: 10px 14px;
    background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text); font-family: inherit; font-size: 14px;
}
.blog-search:focus { outline: none; border-color: var(--accent); }
.blog-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.blog-chip {
    padding: 8px 16px; font-size: 13px; font-weight: 600; font-family: inherit;
    background: var(--bg-card); color: var(--text-muted);
    border: 1px solid var(--border); border-radius: 999px; cursor: pointer; transition: var(--transition);
}
.blog-chip:hover { color: var(--text); border-color: var(--border-hover); }
.blog-chip.active { background: var(--gradient); color: #fff; border-color: transparent; }
.blog-grid { margin-top: 28px; }
.blog-empty { text-align: center; color: var(--text-muted); margin-top: 48px; }

.reading-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; background: transparent; z-index: 100; }
.reading-progress span { display: block; height: 100%; width: 0; background: var(--gradient); transition: width 0.1s linear; }
.blog-back { display: inline-block; margin-bottom: 18px; color: var(--text-muted); text-decoration: none; font-size: 14px; }
.blog-back:hover { color: var(--accent-light); }
.article-byline { color: var(--text-dim); font-size: 13px; margin-top: 14px; }
.article-cover { height: 220px; border-radius: var(--radius); margin: 8px 0 32px; }
.blog-related { margin-top: 56px; border-top: 1px solid var(--border); padding-top: 12px; }
.blog-related h2 { font-size: 22px; }

/* ── Article ── */
.article { max-width: 760px; margin: 0 auto; }
.article h2 { font-size: 24px; font-weight: 700; margin: 34px 0 12px; }
.article p { color: var(--text-muted); font-size: 16px; line-height: 1.75; margin: 0 0 14px; }
.article p strong { color: var(--text); }
.article a { color: var(--accent-light); text-decoration: none; }
.article a:hover { text-decoration: underline; }
.article figure { margin: 28px 0; }
.article figure img { display: block; width: 100%; height: auto; border-radius: var(--radius); }
.article figcaption { margin-top: 8px; color: var(--text-dim); font-size: 12px; line-height: 1.45; }

/* ── Landing / CTA utilities ── */
.hero-cta { display: inline-flex; margin-top: 8px; }
.section-head { margin-top: 48px; }
.section-title { font-size: 32px; }
.cta-card { text-align: center; margin-top: 40px; }
.cta-card.tight { margin-top: 36px; }
.cta-card h2 { margin-top: 0; }
.cta-card .page-lead { margin: 8px auto 18px; }
.cta-card .btn-nav { display: inline-flex; }

/* ── FAQ / support ── */
.faq { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--bg-card); margin-bottom: 12px; overflow: hidden; }
.faq summary { padding: 18px 22px; cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; color: var(--accent-light); font-size: 22px; }
.faq[open] summary::after { content: '−'; }
.faq p { padding: 0 22px 20px; color: var(--text-muted); font-size: 14px; }

/* ── Contact box ── */
.contact-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-top: 32px;
}
.contact-box h3 { font-size: 18px; margin-bottom: 14px; }
.contact-row { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 12px; color: var(--text-muted); font-size: 14px; }
.contact-row svg { color: var(--accent-light); flex-shrink: 0; margin-top: 2px; }
.contact-row a { color: var(--accent-light); text-decoration: none; }

/* ── Footer ── */
.site-footer { border-top: 1px solid var(--border); padding: 60px 24px 24px; margin-top: 80px; }
.footer-inner {
    max-width: 1200px;
    margin: 0 auto 40px;
    display: flex;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}
.footer-brand p { font-size: 14px; color: var(--text-muted); margin-top: 8px; max-width: 300px; }
.footer-links { display: flex; gap: 60px; flex-wrap: wrap; }
.footer-col h4 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text); margin-bottom: 16px; }
.footer-col a { display: block; font-size: 14px; color: var(--text-muted); text-decoration: none; padding: 4px 0; transition: var(--transition); }
.footer-col a:hover { color: var(--text); }
.footer-bottom { max-width: 1200px; margin: 0 auto; padding-top: 24px; border-top: 1px solid var(--border); text-align: center; }
.footer-bottom p { font-size: 13px; color: var(--text-dim); }
.footer-bottom a { color: var(--accent-light); text-decoration: none; }

@media (max-width: 640px) {
    .nav-inner { gap: 10px; padding: 12px 14px; }
    .brand-text { display: none; }
    .nav-links { display: flex; gap: 8px; }
    .nav-link {
        padding: 9px;
        border-radius: 12px;
        background: var(--bg-card);
        border: 1px solid var(--border);
        color: var(--text-muted);
    }
    .nav-link:hover, .nav-link:active, .nav-link:focus-visible { color: var(--accent-light); border-color: var(--border-hover); background: var(--bg-elevated); }
    .nav-link-feed { color: #fff; border-color: color-mix(in srgb, var(--accent-light) 55%, transparent); background: var(--accent); }
    .nav-link-feed:hover { color: #fff; background: var(--accent); filter: brightness(1.1); }
    .nav-ico { display: block; }
    .nav-txt { display: none; }
    .btn-nav { padding: 9px 12px; font-size: 13px; }
    .page-wrap { padding-top: 48px; }
    .blog-featured { grid-template-columns: 1fr; }
    .blog-featured-cover { min-height: 180px; }
    .blog-featured-body { padding: 24px; }
    .blog-filters { flex-direction: column; align-items: stretch; }
    .blog-search { max-width: none; }
}

/* ══════════════════════════════════════════════════════════════
   Blog — light theme (keeps the home accent colors)
   ══════════════════════════════════════════════════════════════ */
body.blog-page {
    --bg: #f4f5fb;
    --bg-card: #ffffff;
    --bg-elevated: #eef0f8;
    --border: rgba(20, 20, 55, 0.08);
    --border-hover: rgba(20, 20, 55, 0.18);
    --text: #16122e;
    --text-muted: #5b6478;
    --text-dim: #9aa2b5;
    --shadow: 0 20px 60px -20px rgba(40, 30, 90, 0.18);
    background: var(--bg);
    color: var(--text);
}
body.blog-page .bg-grid {
    background-image:
        linear-gradient(rgba(20, 20, 60, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 20, 60, 0.035) 1px, transparent 1px);
}
body.blog-page .bg-glow-1 { background: rgba(147, 0, 245, 0.14); opacity: 0.55; }
body.blog-page .bg-glow-2 { background: rgba(25, 111, 255, 0.13); opacity: 0.55; }
body.blog-page .navbar {
    background: rgba(255, 255, 255, 0.82);
    border-bottom: 1px solid var(--border);
}
body.blog-page .nav-brand { color: var(--text); }
body.blog-page .page-eyebrow { background: #fff; }
body.blog-page .blog-card,
body.blog-page .blog-featured { box-shadow: 0 8px 26px -16px rgba(40, 30, 90, 0.22); }
body.blog-page .blog-tag { color: var(--accent); }

/* ══════════════════════════════════════════════════════════════
   Instagram-style mobile chrome (top search bar + bottom tab bar)
   ══════════════════════════════════════════════════════════════ */
.m-topbar, .m-tabbar { display: none; }

.m-search {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 13px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
}
.m-search svg { width: 16px; height: 16px; color: var(--text-muted); flex: 0 0 auto; }
.m-search input {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    color: var(--text);
    font: inherit;
    font-size: 14px;
    outline: none;
}
.m-search input::placeholder { color: var(--text-dim); }

.m-tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2px;
    padding: 4px 8px;
    transition: var(--transition);
}
.m-tab svg { width: 24px; height: 24px; stroke: currentColor; }
.m-tab.active { color: var(--accent); }

@media (max-width: 640px) {
    body.blog-page .navbar { display: none; }
    body.blog-page { padding-bottom: 76px; }

    .m-topbar {
        display: flex;
        align-items: center;
        gap: 12px;
        position: sticky;
        top: 0;
        z-index: 100;
        padding: 10px 14px;
        background: color-mix(in srgb, var(--bg) 82%, transparent);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid var(--border);
    }
    .m-topbar-brand {
        font-size: 20px;
        font-weight: 800;
        letter-spacing: -0.5px;
        text-decoration: none;
        color: var(--text);
        flex: 0 0 auto;
    }

    .m-tabbar {
        display: flex;
        justify-content: space-around;
        align-items: center;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 100;
        padding: 8px 6px calc(8px + env(safe-area-inset-bottom));
        background: color-mix(in srgb, var(--bg) 90%, transparent);
        -webkit-backdrop-filter: blur(16px);
        backdrop-filter: blur(16px);
        border-top: 1px solid var(--border);
    }
}