/* =============================================================
   Spyzero blog — shares the landing page design tokens.
   ============================================================= */
:root {
    --bg-ground: #07090C;
    --bg-surface-1: #0E1218;
    --bg-surface-2: #161B23;
    --bg-surface-3: #1F2630;
    --fg-1: #F5F7FA;
    --fg-2: #C2C9D4;
    --fg-3: #828B99;
    --fg-4: #4E5663;
    --accent: #1F5BFF;
    --accent-bright: #4A8BFF;
    --accent-dim: #0A3FE0;
    --accent-wash: rgba(74, 139, 255, 0.12);
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.10);
    --border-strong: rgba(255, 255, 255, 0.16);
    --status-safe: #34D058;
    --status-info: #7FB3FF;
    --status-warn: #F5C26B;
    --status-threat: #F26D6D;
    --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
    --dur-base: 180ms;
    --dur-slow: 240ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-ground);
    color: var(--fg-1);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
a { color: var(--accent-bright); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header (matches landing) ---------- */
.site-header {
    position: sticky; top: 0; z-index: 20;
    backdrop-filter: blur(20px) saturate(140%);
    -webkit-backdrop-filter: blur(20px) saturate(140%);
    background: rgba(7, 9, 12, 0.72);
    border-bottom: 1px solid var(--border-subtle);
}
.header-inner {
    max-width: 1120px; margin: 0 auto; padding: 0.95rem 1.5rem;
    display: flex; align-items: center; justify-content: space-between;
}
.brand {
    display: inline-flex; align-items: center; gap: 0.65rem;
    font-family: 'Space Grotesk', sans-serif; font-weight: 600;
    font-size: 1.18rem; letter-spacing: -0.3px; color: var(--fg-1);
}
.brand:hover { text-decoration: none; }
.brand-logo { height: 30px; width: 30px; border-radius: 7px; }
.nav-links { display: inline-flex; align-items: center; gap: 1.4rem; font-size: 0.92rem; }
.nav-links a { color: var(--fg-2); transition: color var(--dur-base) var(--ease-out); }
.nav-links a:hover { color: var(--fg-1); text-decoration: none; }
.nav-cta { font-weight: 600; color: var(--accent-bright) !important; }

/* ---------- Article shell ---------- */
.article-wrap { max-width: 760px; margin: 0 auto; padding: 0 1.5rem; }
.breadcrumb {
    font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem;
    color: var(--fg-3); letter-spacing: 0.02em; margin: 2.5rem 0 1.25rem;
}
.breadcrumb a { color: var(--fg-3); }
.breadcrumb a:hover { color: var(--accent-bright); }

.post-eyebrow {
    display: inline-block;
    font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem;
    letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-bright);
    background: var(--accent-wash); border: 1px solid rgba(74, 139, 255, 0.22);
    padding: 0.35rem 0.75rem; border-radius: 999px; margin-bottom: 1.25rem;
}

article h1 {
    font-family: 'Space Grotesk', sans-serif; font-weight: 600;
    font-size: clamp(2rem, 4.5vw, 3rem); line-height: 1.08;
    letter-spacing: -1.2px; margin-bottom: 1.1rem;
}
.post-meta {
    display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap;
    font-size: 0.88rem; color: var(--fg-3); margin-bottom: 2rem;
    padding-bottom: 2rem; border-bottom: 1px solid var(--border-subtle);
}
.post-meta .sep { color: var(--fg-4); }

.post-lead { font-size: 1.18rem; color: var(--fg-2); margin-bottom: 2rem; line-height: 1.6; }

.post-hero {
    width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 16px;
    border: 1px solid var(--border-subtle); margin-bottom: 2rem; display: block;
}
figure { margin: 1.75rem 0; }
figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; border-radius: 14px; border: 1px solid var(--border-subtle); display: block; }
figcaption { font-size: 0.82rem; color: var(--fg-3); margin-top: 0.6rem; text-align: center; }
.post-shot {
    display: block; margin: 1.75rem auto; max-width: 260px; width: 100%;
    border-radius: 26px; border: 1px solid var(--border-strong);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}

article h2 {
    font-family: 'Space Grotesk', sans-serif; font-weight: 600;
    font-size: clamp(1.45rem, 3vw, 1.85rem); line-height: 1.2;
    letter-spacing: -0.5px; margin: 2.75rem 0 1rem; scroll-margin-top: 80px;
}
article h3 {
    font-family: 'Space Grotesk', sans-serif; font-weight: 600;
    font-size: 1.18rem; line-height: 1.3; margin: 2rem 0 0.75rem;
}
article p { color: var(--fg-2); margin-bottom: 1.15rem; }
article strong { color: var(--fg-1); font-weight: 600; }
article em { color: var(--fg-1); }

article ul, article ol { color: var(--fg-2); margin: 0 0 1.25rem 1.25rem; }
article li { margin-bottom: 0.5rem; padding-left: 0.25rem; }
article ul li::marker { color: var(--accent-bright); }
article ol li::marker { color: var(--accent-bright); font-family: 'IBM Plex Mono', monospace; }

/* ---------- Table of contents ---------- */
.toc {
    background: var(--bg-surface-1); border: 1px solid var(--border-subtle);
    border-radius: 14px; padding: 1.4rem 1.6rem; margin: 0 0 2.5rem;
}
.toc strong {
    display: block; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem;
    text-transform: uppercase; letter-spacing: 0.12em; color: var(--fg-3); margin-bottom: 0.8rem;
}
.toc ol { margin: 0 0 0 1.1rem; }
.toc li { margin-bottom: 0.4rem; }
.toc a { color: var(--fg-2); }
.toc a:hover { color: var(--accent-bright); }

/* ---------- Numbered steps ---------- */
.steps { list-style: none; margin: 1.5rem 0; counter-reset: step; }
.steps > li {
    position: relative; padding-left: 3.25rem; margin-bottom: 1.5rem; counter-increment: step;
}
.steps > li::before {
    content: counter(step); position: absolute; left: 0; top: -0.1rem;
    width: 2.2rem; height: 2.2rem; border-radius: 50%;
    background: var(--accent-wash); border: 1px solid rgba(74, 139, 255, 0.35);
    color: var(--accent-bright); font-family: 'Space Grotesk', sans-serif; font-weight: 600;
    display: grid; place-items: center;
}
.steps > li h3 { margin: 0 0 0.4rem; }

/* ---------- Callout / tip / warning boxes ---------- */
.callout {
    border-radius: 14px; padding: 1.2rem 1.4rem; margin: 1.75rem 0;
    border: 1px solid var(--border-default); background: var(--bg-surface-1);
    display: flex; gap: 0.9rem; font-size: 0.96rem; line-height: 1.55;
}
.callout p:last-child { margin-bottom: 0; }
.callout .ico { flex-shrink: 0; width: 22px; height: 22px; margin-top: 0.1rem; }
.callout .ico svg { width: 22px; height: 22px; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.callout.tip { border-color: rgba(74, 139, 255, 0.3); background: rgba(31, 91, 255, 0.07); }
.callout.tip .ico svg { stroke: var(--accent-bright); }
.callout.warn { border-color: rgba(245, 194, 107, 0.3); background: rgba(245, 194, 107, 0.06); }
.callout.warn .ico svg { stroke: var(--status-warn); }
.callout.note { border-color: var(--border-default); }
.callout.note .ico svg { stroke: var(--fg-3); }
.callout strong { color: var(--fg-1); }

/* ---------- Comparison / data tables ---------- */
.table-scroll { overflow-x: auto; margin: 1.75rem 0; }
table {
    width: 100%; border-collapse: collapse; font-size: 0.92rem;
    background: var(--bg-surface-1); border: 1px solid var(--border-subtle);
    border-radius: 12px; overflow: hidden;
}
caption { text-align: left; color: var(--fg-3); font-size: 0.82rem; margin-bottom: 0.6rem; }
th, td { padding: 0.8rem 1rem; text-align: left; border-bottom: 1px solid var(--border-subtle); vertical-align: top; }
thead th {
    background: var(--bg-surface-2); color: var(--fg-1);
    font-family: 'Space Grotesk', sans-serif; font-weight: 600; font-size: 0.9rem;
}
tbody tr:last-child td { border-bottom: none; }
td:first-child { color: var(--fg-1); font-weight: 500; }
td.yes, td.no, td.mid { font-weight: 500; color: var(--fg-2); }
td.yes::before, td.no::before, td.mid::before {
    display: inline-grid; place-items: center;
    width: 1.15rem; height: 1.15rem; margin-right: 0.5rem;
    border-radius: 50%; font-size: 0.72rem; font-weight: 700;
    vertical-align: -0.18rem; line-height: 1;
}
td.yes::before { content: "\2713"; color: var(--status-safe); background: rgba(52, 208, 88, 0.16); }
td.no::before  { content: "\2715"; color: var(--status-threat); background: rgba(242, 109, 109, 0.16); }
td.mid::before { content: "\2013"; color: var(--status-warn); background: rgba(245, 194, 107, 0.16); }

/* ---------- CTA card ---------- */
.cta-card {
    background: linear-gradient(180deg, rgba(31, 91, 255, 0.12) 0%, var(--bg-surface-1) 70%);
    border: 1px solid rgba(74, 139, 255, 0.28); border-radius: 18px;
    padding: 2rem; margin: 2.5rem 0; text-align: center;
}
.cta-card h3 { font-family: 'Space Grotesk', sans-serif; font-size: 1.35rem; margin-bottom: 0.6rem; }
.cta-card p { color: var(--fg-2); max-width: 460px; margin: 0 auto 1.4rem; }
.appstore-badge { display: inline-block; transition: transform 0.12s var(--ease-out), opacity var(--dur-base) var(--ease-out); }
.appstore-badge img { display: block; height: 48px; width: auto; margin: 0 auto; }
.appstore-badge:hover { transform: translateY(-1px); opacity: 0.92; }

/* ---------- FAQ accordion ---------- */
.faq-list { margin: 1.5rem 0; }
.faq-item { border-bottom: 1px solid var(--border-subtle); }
.faq-item summary {
    list-style: none; cursor: pointer; display: flex; align-items: center;
    justify-content: space-between; gap: 1rem; padding: 1.2rem 0;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary h3 { margin: 0; font-size: 1.05rem; transition: color var(--dur-base) var(--ease-out); }
.faq-item summary:hover h3 { color: var(--accent-bright); }
.faq-chevron { position: relative; width: 12px; height: 12px; flex-shrink: 0; transition: transform var(--dur-slow) var(--ease-out); }
.faq-chevron::before, .faq-chevron::after { content: ''; position: absolute; top: 5px; width: 8px; height: 1.6px; background: var(--fg-3); border-radius: 2px; }
.faq-chevron::before { left: 0; transform: rotate(45deg); }
.faq-chevron::after { right: 0; transform: rotate(-45deg); }
.faq-item[open] .faq-chevron { transform: rotate(180deg); }
.faq-item p { padding: 0 0 1.3rem; }

/* ---------- Author / share / related ---------- */
.post-foot {
    margin: 3rem 0 0; padding-top: 2rem; border-top: 1px solid var(--border-subtle);
}
.related { margin: 3.5rem 0 0; }
.related h2 { font-size: 1.4rem; margin-bottom: 1.25rem; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.related-card {
    background: var(--bg-surface-1); border: 1px solid var(--border-subtle);
    border-radius: 14px; padding: 1.25rem; transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.related-card:hover { transform: translateY(-3px); border-color: var(--border-default); text-decoration: none; }
.related-card .k { font-family: 'IBM Plex Mono', monospace; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-bright); }
.related-card h3 { font-size: 1.05rem; margin: 0.4rem 0 0; color: var(--fg-1); }

/* ---------- Blog index ---------- */
.index-head { max-width: 760px; margin: 3.5rem auto 2.5rem; padding: 0 1.5rem; }
.index-head h1 { font-family: 'Space Grotesk', sans-serif; font-size: clamp(2rem, 4vw, 2.8rem); letter-spacing: -1px; margin-bottom: 0.75rem; }
.index-head p { color: var(--fg-2); font-size: 1.1rem; }
.post-list { max-width: 760px; margin: 0 auto 4rem; padding: 0 1.5rem; display: grid; gap: 1.1rem; }
.post-card {
    display: grid; grid-template-columns: 200px 1fr; gap: 1.4rem;
    background: var(--bg-surface-1); border: 1px solid var(--border-subtle);
    border-radius: 16px; overflow: hidden;
    transition: transform var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.post-card:hover { transform: translateY(-3px); border-color: var(--border-default); text-decoration: none; }
.post-card img { width: 100%; height: 100%; min-height: 150px; object-fit: cover; filter: saturate(0.9) brightness(0.85); }
.post-card .body { padding: 1.4rem 1.5rem 1.4rem 0; }
.post-card .k { font-family: 'IBM Plex Mono', monospace; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent-bright); }
.post-card h2 { font-family: 'Space Grotesk', sans-serif; font-size: 1.25rem; letter-spacing: -0.3px; margin: 0.45rem 0 0.5rem; color: var(--fg-1); line-height: 1.2; }
.post-card p { color: var(--fg-3); font-size: 0.92rem; margin: 0; }

/* ---------- Footer ---------- */
footer { border-top: 1px solid var(--border-subtle); padding: 2.5rem 1.5rem; margin-top: 4rem; }
.footer-inner { max-width: 1120px; margin: 0 auto; display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.footer-left { display: flex; align-items: center; gap: 0.5rem; color: var(--fg-3); font-size: 0.88rem; }
.footer-left img { height: 22px; width: 22px; border-radius: 5px; }
.footer-links { display: inline-flex; gap: 1.5rem; font-size: 0.9rem; }
.footer-links a { color: var(--fg-2); }
.footer-links a:hover { color: var(--accent-bright); text-decoration: none; }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; } }

@media (max-width: 620px) {
    .post-card { grid-template-columns: 1fr; }
    .post-card img { min-height: 170px; }
    .post-card .body { padding: 0 1.5rem 1.5rem; }
    .related-grid { grid-template-columns: 1fr; }
    .nav-links a:not(.nav-cta) { display: none; }
}