/* feras.me — shared stylesheet for content sub-pages.
   Plain CSS, no build step, no runtime JS. Mirrors the design tokens
   used inline by index.html. */

:root {
    --bg:        #070810;
    --surface:   #10121a;
    --surface-2: #151822;
    --line:      rgba(255, 255, 255, 0.07);
    --text:      #b8bcc8;
    --text-dim:  #8f94a5;
    --text-dimmer: #6b7082;
    --white:     #ffffff;
    --copper:    #ff0000;
    --copper-4:  #ff3333;
    --volt:      #a3e635;
    --cyan:      #22d3ee;
    --amber:     #fbbf24;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--copper); color: var(--bg); }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #252834; border-radius: 3px; }

a { color: var(--copper-4); text-decoration: none; }
a:hover { color: var(--white); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Nav ---------- */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(7, 8, 16, 0.85);
    backdrop-filter: blur(20px) saturate(1.4);
    -webkit-backdrop-filter: blur(20px) saturate(1.4);
    border-bottom: 1px solid var(--line);
}
.nav-inner {
    max-width: 820px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}
.nav a {
    font-size: 0.85rem;
    color: var(--text);
    font-family: var(--mono);
}
.nav a:hover { color: var(--copper-4); text-decoration: none; }
.nav a.home { font-weight: 700; color: var(--white); margin-right: auto; }
.nav a[aria-current="page"] { color: var(--copper-4); }

/* ---------- Layout ---------- */
.wrap { max-width: 820px; margin: 0 auto; padding: 0 24px; }

main { padding: 56px 0 40px; }

.crumbs {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-dimmer);
    margin-bottom: 28px;
}
.crumbs a { color: var(--text-dim); }

.eyebrow {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--copper-4);
    display: block;
    margin-bottom: 12px;
}

h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 900;
    letter-spacing: -0.045em;
    line-height: 1.08;
    color: var(--white);
    margin: 0 0 20px;
}

h2 {
    font-size: clamp(1.35rem, 3vw, 1.8rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.25;
    color: var(--white);
    margin: 56px 0 16px;
    padding-top: 32px;
    border-top: 1px solid var(--line);
}

h3 {
    font-size: 1.08rem;
    font-weight: 700;
    letter-spacing: -0.015em;
    color: var(--white);
    margin: 32px 0 10px;
}

p { margin: 0 0 20px; }

.lede {
    font-size: 1.18rem;
    line-height: 1.65;
    color: var(--text);
    margin-bottom: 28px;
}

strong { color: var(--white); font-weight: 600; }

ul, ol { margin: 0 0 22px; padding-left: 22px; }
li { margin-bottom: 10px; }
li::marker { color: var(--copper); }

/* ---------- Components ---------- */
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 32px; }
.tag {
    font-family: var(--mono);
    font-size: 0.7rem;
    padding: 4px 11px;
    border-radius: 6px;
    border: 1px solid rgba(255, 0, 0, 0.28);
    background: rgba(255, 0, 0, 0.1);
    color: var(--copper-4);
    white-space: nowrap;
}
.tag.volt  { border-color: rgba(163, 230, 53, 0.3); background: rgba(163, 230, 53, 0.1); color: var(--volt); }
.tag.cyan  { border-color: rgba(34, 211, 238, 0.3); background: rgba(34, 211, 238, 0.1); color: var(--cyan); }
.tag.amber { border-color: rgba(251, 191, 36, 0.3); background: rgba(251, 191, 36, 0.1); color: var(--amber); }

.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 24px 26px;
    margin: 0 0 20px;
}
.card h3 { margin-top: 0; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }

.meta {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-dimmer);
}

dl.facts {
    display: grid;
    grid-template-columns: minmax(120px, auto) 1fr;
    gap: 10px 22px;
    margin: 0 0 28px;
    font-size: 0.92rem;
}
dl.facts dt {
    font-family: var(--mono);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dimmer);
    padding-top: 3px;
}
dl.facts dd { margin: 0; color: var(--text); }

table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 26px;
    font-size: 0.9rem;
}
th, td {
    text-align: left;
    padding: 11px 14px;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}
th {
    font-family: var(--mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-dimmer);
    font-weight: 500;
}
td:first-child { color: var(--white); white-space: nowrap; }

blockquote {
    margin: 0 0 24px;
    padding: 2px 0 2px 20px;
    border-left: 2px solid var(--copper);
    color: var(--text);
    font-size: 1.02rem;
}

code {
    font-family: var(--mono);
    font-size: 0.86em;
    background: var(--surface-2);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: 1px 6px;
    color: var(--volt);
}

/* ---------- FAQ ---------- */
.faq { margin-bottom: 12px; }
.faq h3 { margin-bottom: 8px; }

/* ---------- Footer ---------- */
footer {
    border-top: 1px solid var(--line);
    margin-top: 64px;
    padding: 32px 0 48px;
    font-size: 0.85rem;
    color: var(--text-dim);
}
footer .links { display: flex; flex-wrap: wrap; gap: 18px; margin-bottom: 18px; }
footer .links a { font-family: var(--mono); font-size: 0.8rem; }
footer .copy { font-family: var(--mono); font-size: 0.72rem; color: var(--text-dimmer); }

@media (max-width: 560px) {
    body { font-size: 16px; }
    dl.facts { grid-template-columns: 1fr; gap: 2px 0; }
    dl.facts dd { margin-bottom: 12px; }
    .nav-inner { gap: 14px; }
}