/* ============================================================
   133cx — main stylesheet
   Dark, monospace, orange-accent research environment.
   ============================================================ */

:root {
    --bg: #050807;
    --bg-soft: #080d0a;
    --surface: rgba(10, 20, 15, 0.72);
    --surface-solid: #0b1310;
    --border: rgba(0, 255, 156, 0.18);
    --border-soft: rgba(255, 255, 255, 0.05);
    --fg: #d8e6dd;
    --muted: #6f8a7c;
    --accent: #00ff9c;
    --accent-dim: #0aa36a;
    --accent-soft: rgba(0, 255, 156, 0.09);
    --red: #0d2b1e;
    --red-soft: rgba(0, 255, 156, 0.12);
    --success: #00ff9c;
    --error: #ff5d4a;
    --mark: rgba(0, 255, 156, 0.25);
    --radius: 14px;
    --mono: "JetBrains Mono", "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
    --sans: "Inter", -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--mono);
    font-size: 15px;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
[hidden] { display: none !important; }
input[type="range"], input[type="checkbox"] { accent-color: var(--accent); }
:focus-visible { outline: 1px solid var(--accent); outline-offset: 2px; }
.mono { font-family: var(--mono); }
.dim { color: var(--muted); }
.muted { color: var(--muted); font-size: 0.9em; }
.icon { vertical-align: -0.2em; flex: none; }
mark { background: var(--mark); color: var(--fg); border-radius: 3px; padding: 0 2px; }

/* ---------- ambient background ---------- */
.ambient { position: fixed; inset: 0; z-index: -2; pointer-events: none; overflow: hidden; }
.glow {
    position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.5;
    animation: drift 24s ease-in-out infinite alternate;
}
.glow-1 { width: 55vw; height: 55vw; left: -18vw; top: -22vw;
    background: radial-gradient(circle, rgba(0, 255, 156, 0.09), transparent 65%); }
.glow-2 { width: 45vw; height: 45vw; right: -15vw; bottom: -18vw;
    background: radial-gradient(circle, rgba(0, 128, 80, 0.22), transparent 65%);
    animation-delay: -12s; }
@keyframes drift {
    from { transform: translate(0, 0) scale(1); }
    to   { transform: translate(4vw, 3vh) scale(1.12); }
}
.particles { position: absolute; inset: 0; width: 100%; height: 100%; }
.scanlines {
    position: absolute; inset: 0; opacity: 0.5;
    background: repeating-linear-gradient(to bottom, transparent 0 3px, rgba(0, 20, 10, 0.22) 3px 4px);
}

/* ---------- header / nav ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(14px);
    background: rgba(10, 9, 8, 0.78);
    border-bottom: 1px solid var(--border-soft);
}
.nav {
    max-width: 1180px; margin: 0 auto; padding: 14px 24px;
    display: flex; align-items: center; gap: 26px;
}
.brand { display: inline-flex; align-items: center; gap: 9px; font-size: 1.1rem; font-weight: 700; letter-spacing: 0.04em; color: var(--fg); }
.brand .icon { color: var(--accent); }
.nav-links { display: flex; gap: 20px; margin-left: 8px; }
.nav-links a {
    color: var(--muted); font-size: 0.9rem; padding: 4px 2px; position: relative;
    transition: color 0.2s;
}
.nav-links a::after {
    content: ""; position: absolute; left: 0; right: 100%; bottom: -2px; height: 1px;
    background: var(--accent); transition: right 0.25s ease;
}
.nav-links a:hover, .nav-links a.active { color: var(--fg); }
.nav-links a:hover::after, .nav-links a.active::after { right: 0; }

.search-trigger {
    margin-left: auto; display: inline-flex; align-items: center; gap: 8px;
    background: var(--surface); color: var(--muted);
    border: 1px solid var(--border-soft); border-radius: 10px;
    padding: 7px 12px; font-size: 0.85rem; cursor: pointer;
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.search-trigger:hover { border-color: var(--border); color: var(--fg); box-shadow: 0 0 18px rgba(0,255,156,0.10); }
kbd {
    font-family: var(--mono); font-size: 0.7rem; color: var(--muted);
    border: 1px solid var(--border-soft); border-bottom-width: 2px;
    border-radius: 5px; padding: 1px 6px; background: rgba(255,255,255,0.03);
}
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--fg); margin: 4px 0; transition: 0.2s; }

/* ---------- hero ---------- */
.hero { padding: 96px 24px 64px; text-align: center; position: relative; }
.hero-inner { max-width: 760px; margin: 0 auto; }
.hero-kicker { color: var(--accent); font-size: 0.85rem; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.85; }
.hero-title { margin: 10px 0 18px; font-size: clamp(3rem, 9vw, 5.5rem); line-height: 1; font-weight: 800; letter-spacing: 0.02em; }
.hero-brand {
    background: linear-gradient(180deg, var(--fg) 20%, var(--accent) 130%);
    -webkit-background-clip: text; background-clip: text; color: transparent;
    text-shadow: 0 0 60px rgba(0, 255, 156, 0.35);
}
/* RGB-split glitch, briefly toggled by JS at irregular intervals */
.hero-brand.glitch {
    animation: glitch-split 0.28s steps(2, end) both;
}
@keyframes glitch-split {
    0%   { text-shadow: -4px 0 rgba(255, 60, 80, 0.65), 4px 0 rgba(0, 255, 156, 0.65); transform: translateX(1px) skewX(-1.5deg); }
    35%  { text-shadow: 3px 0 rgba(255, 60, 80, 0.65), -3px 0 rgba(0, 255, 156, 0.65); transform: translateX(-2px) skewX(1deg); }
    70%  { text-shadow: -2px 0 rgba(255, 60, 80, 0.5), 2px 0 rgba(0, 255, 156, 0.5); transform: translateX(1px); }
    100% { text-shadow: 0 0 60px rgba(0, 255, 156, 0.35); transform: none; }
}
/* character decode/scramble (JS swaps textContent) */
.hero-brand .scramble-char { color: var(--accent-dim); }
.hero-kicker { min-height: 1.4em; }
.cursor {
    display: inline-block; width: 4px; height: 0.85em; margin-left: 6px;
    background: var(--accent); vertical-align: -0.08em;
    animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.hero-sub { color: var(--muted); font-size: 1rem; min-height: 1.6em; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero-stats { margin-top: 40px; display: flex; gap: 34px; justify-content: center; color: var(--muted); font-size: 0.85rem; flex-wrap: wrap; }
.hero-stats strong { color: var(--accent); font-size: 1.2rem; display: block; }

.btn {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: var(--mono); font-size: 0.9rem; font-weight: 600;
    padding: 11px 20px; border-radius: 10px; cursor: pointer;
    border: 1px solid transparent; transition: 0.2s;
}
.btn-primary { background: var(--accent); color: #03150c; }
.btn-primary:hover { box-shadow: 0 0 26px rgba(0,255,156,0.45); transform: translateY(-1px); }
.btn-ghost { background: var(--surface); color: var(--fg); border-color: var(--border-soft); }
.btn-ghost:hover { border-color: var(--border); }

/* ---------- sections & cards ---------- */
.section { max-width: 1180px; margin: 0 auto; padding: 44px 24px; }
.section-head { display: flex; align-items: center; gap: 16px; margin-bottom: 26px; }
.section-head h2 { margin: 0; font-size: 1.25rem; display: inline-flex; gap: 10px; align-items: center; }
.section-head .icon { color: var(--accent); }
.rule { flex: 1; height: 1px; background: linear-gradient(90deg, var(--border), transparent); }

.card-grid {
    display: grid; gap: 18px;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.card {
    display: flex; flex-direction: column; gap: 8px;
    background: var(--surface); border: 1px solid var(--border-soft);
    border-radius: var(--radius); padding: 20px;
    position: relative; overflow: hidden;
    transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card::before {
    content: ""; position: absolute; inset: 0;
    background: radial-gradient(320px circle at 85% -20%, var(--accent-soft), transparent 70%);
    opacity: 0; transition: opacity 0.3s; pointer-events: none;
}
.card:hover {
    transform: translateY(-4px);
    border-color: var(--border);
    box-shadow: 0 14px 40px rgba(0,0,0,0.45), 0 0 24px rgba(0,255,156,0.07);
}
.card:hover::before { opacity: 1; }
.card-top { display: flex; justify-content: space-between; align-items: center; }
.card-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 10px;
    background: var(--accent-soft); color: var(--accent);
    border: 1px solid var(--border);
}
.card-category { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; }
.card-name { margin: 8px 0 0; font-size: 1.05rem; font-weight: 700; }
.card-desc { margin: 2px 0 0; color: var(--muted); font-size: 0.88rem; flex: 1; min-height: 2.6em; }
.card-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; }
.card-id { color: var(--accent); font-size: 0.78rem; opacity: 0.85; }
.tags { display: flex; gap: 6px; flex-wrap: wrap; }
.tag {
    font-size: 0.7rem; color: var(--muted);
    border: 1px solid var(--border-soft); border-radius: 20px; padding: 1px 9px;
}

/* ---------- early-web flavor ---------- */
.card-meta { margin-top: 4px; color: var(--muted); font-size: 0.72rem; display: flex; align-items: center; gap: 8px; }
.new-badge {
    color: var(--accent); font-size: 0.68rem; font-weight: 700;
    border: 1px solid var(--border); border-radius: 4px; padding: 0 5px;
    animation: blink-badge 1.2s steps(1) infinite;
}
@keyframes blink-badge { 50% { opacity: 0.25; } }

/* plain hyperlink lists (search page + anywhere text-heavy) */
.linklist { display: flex; flex-direction: column; gap: 14px; margin-top: 20px; }
.link-item { line-height: 1.5; }
.link-title {
    color: var(--accent); text-decoration: underline; text-underline-offset: 3px;
    text-decoration-color: var(--border);
}
.link-title:hover { text-decoration-color: var(--accent); }
.link-desc { color: var(--muted); font-size: 0.9rem; }
.link-meta { display: block; font-size: 0.75rem; margin-top: 2px; }
.search-form { display: flex; gap: 10px; flex-wrap: wrap; }
.search-form .input { flex: 1; min-width: 200px; }
.search-count { margin: 18px 0 0; }

.hit-counter { color: var(--muted); font-size: 0.8rem; }
.hit-counter .digits {
    color: var(--accent); background: rgba(0, 0, 0, 0.45);
    border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px;
    letter-spacing: 0.15em;
}

/* ---------- categories ---------- */
.category-grid { display: flex; flex-direction: column; gap: 14px; }
.category-panel {
    background: var(--surface); border: 1px solid var(--border-soft);
    border-radius: var(--radius); overflow: hidden;
}
.category-panel summary {
    list-style: none; cursor: pointer; display: flex; align-items: center; gap: 12px;
    padding: 16px 20px; font-size: 1rem; font-weight: 600; transition: background 0.2s;
}
.category-panel summary::-webkit-details-marker { display: none; }
.category-panel summary:hover { background: rgba(0,255,156,0.05); }
.category-panel summary .icon { margin-left: auto; color: var(--muted); transition: transform 0.25s; }
.category-panel[open] summary .icon { transform: rotate(180deg); }
.cat-name { color: var(--fg); }
.cat-count { color: var(--accent); font-size: 0.8rem; border: 1px solid var(--border); border-radius: 20px; padding: 1px 10px; }
.category-panel > .card-grid { padding: 4px 20px 20px; border-top: 1px solid var(--border-soft); padding-top: 18px; }

/* ---------- command palette ---------- */
.palette-overlay {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(5, 4, 3, 0.7); backdrop-filter: blur(6px);
    display: flex; justify-content: center; align-items: flex-start;
    padding: 12vh 20px 20px;
    animation: fadeIn 0.15s ease;
}
.palette-overlay[hidden] { display: none; }
@keyframes fadeIn { from { opacity: 0; } }
.palette {
    width: min(640px, 100%);
    background: var(--surface-solid); border: 1px solid var(--border);
    border-radius: 16px; overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 60px rgba(0,255,156,0.10);
    animation: pop 0.18s ease;
}
@keyframes pop { from { transform: translateY(-10px) scale(0.98); opacity: 0; } }
.palette-input-row {
    display: flex; align-items: center; gap: 12px; padding: 16px 18px;
    border-bottom: 1px solid var(--border-soft); color: var(--accent);
}
#palette-input {
    flex: 1; background: none; border: 0; outline: 0; color: var(--fg);
    font-size: 1rem;
}
#palette-input::placeholder { color: var(--muted); }
.palette-filters { display: flex; gap: 8px; padding: 10px 16px; flex-wrap: wrap; border-bottom: 1px solid var(--border-soft); }
.chip {
    font-family: var(--mono); font-size: 0.74rem; cursor: pointer;
    background: none; color: var(--muted);
    border: 1px solid var(--border-soft); border-radius: 20px; padding: 3px 12px;
    transition: 0.15s;
}
.chip:hover { color: var(--fg); border-color: var(--border); }
.chip.active { background: var(--accent-soft); color: var(--accent); border-color: var(--border); }
.palette-results {
    list-style: none; margin: 0; padding: 8px; max-height: 46vh; overflow-y: auto;
}
.palette-results li {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 12px; border-radius: 10px; cursor: pointer; font-size: 0.9rem;
}
.palette-results li .icon { color: var(--accent); }
.palette-results li .pr-meta { margin-left: auto; color: var(--muted); font-size: 0.72rem; }
.palette-results li.selected { background: var(--accent-soft); }
.palette-results li:hover { background: rgba(255,255,255,0.04); }
.palette-results li.selected:hover { background: var(--accent-soft); }
.palette-empty { padding: 28px 16px; text-align: center; color: var(--muted); }
.palette-foot {
    display: flex; gap: 18px; padding: 10px 18px;
    border-top: 1px solid var(--border-soft); color: var(--muted); font-size: 0.72rem;
}
.palette-foot span { display: inline-flex; gap: 5px; align-items: center; }

/* ---------- directory page ---------- */
.directory-filters { display: flex; flex-direction: column; gap: 14px; margin-bottom: 26px; }
.input {
    background: var(--surface); border: 1px solid var(--border-soft);
    border-radius: 10px; padding: 10px 14px; color: var(--fg);
    font-size: 0.9rem; outline: none; transition: border-color 0.2s;
    font-family: var(--mono);
}
.input:focus { border-color: var(--border); box-shadow: 0 0 16px rgba(0,255,156,0.10); }
.chip-row { display: flex; gap: 8px; flex-wrap: wrap; }
.empty-state { color: var(--muted); text-align: center; padding: 40px 0; }

/* ---------- error page ---------- */
.error-page { display: flex; justify-content: center; padding: 90px 20px; }
.terminal-panel {
    background: var(--surface); border: 1px solid var(--border-soft);
    border-radius: var(--radius); padding: 34px 38px; max-width: 620px; width: 100%;
    display: flex; flex-direction: column; gap: 12px;
}
.error-line { color: var(--error); text-shadow: 0 0 18px var(--red-soft); }
.terminal-panel .btn { align-self: flex-start; margin-top: 10px; }

/* ---------- module shell ---------- */
.page-module { max-width: 1180px; margin: 0 auto; padding: 30px 24px 60px; }
.module-nav { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.85rem; margin-bottom: 22px; }
.module-nav .crumb { display: inline-flex; gap: 6px; align-items: center; color: var(--accent); }
.module-nav .sep { opacity: 0.5; }
body.standalone { background: var(--bg); }

/* ---------- tool shared UI ---------- */
.panel {
    background: var(--surface); border: 1px solid var(--border-soft);
    border-radius: var(--radius); padding: 26px;
}
.tool-head h1 { margin: 4px 0 6px; font-size: 1.6rem; }
.tool-head p { margin: 0 0 22px; color: var(--muted); font-size: 0.9rem; }
.tool-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.tool-output {
    margin-top: 18px; padding: 16px; background: rgba(0,0,0,0.35);
    border: 1px solid var(--border-soft); border-radius: 10px;
    word-break: break-all; white-space: pre-wrap; font-size: 0.95rem;
    color: var(--accent); min-height: 52px;
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
.field label { font-size: 0.78rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.toggle-row { display: flex; gap: 16px; flex-wrap: wrap; }
.toggle { display: inline-flex; gap: 8px; align-items: center; font-size: 0.85rem; color: var(--muted); cursor: pointer; }
.toggle input { accent-color: var(--accent); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--border-soft); margin-top: 60px; background: rgba(10,9,8,0.6); }
.footer-grid {
    max-width: 1180px; margin: 0 auto; padding: 44px 24px 26px;
    display: grid; gap: 30px; grid-template-columns: 2fr 1fr 1fr 1fr;
}
.footer-col { display: flex; flex-direction: column; gap: 8px; font-size: 0.88rem; }
.footer-col h4 { margin: 0 0 6px; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); }
.footer-col a { color: var(--muted); transition: color 0.2s; }
.footer-col a:hover { color: var(--fg); }
.footer-bar {
    max-width: 1180px; margin: 0 auto; padding: 16px 24px 26px;
    display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
    border-top: 1px solid var(--border-soft); color: var(--muted); font-size: 0.75rem;
}
.dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--success); margin-right: 7px; box-shadow: 0 0 8px var(--success); }

/* ---------- reveals ---------- */
/* Only hide pre-reveal when JS is confirmed running (html.js). */
html.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
html.js .reveal.visible { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 760px) {
    .nav-links, .search-trigger kbd { display: none; }
    .nav-toggle { display: block; margin-left: auto; }
    .search-trigger { margin-left: 0; }
    .nav.open .nav-links {
        display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
        background: var(--surface-solid); border-bottom: 1px solid var(--border-soft);
        padding: 16px 24px; gap: 14px;
    }
    .nav.open .nav-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .nav.open .nav-toggle span:nth-child(2) { opacity: 0; }
    .nav.open .nav-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
    .footer-grid { grid-template-columns: 1fr; }
    .hero { padding-top: 64px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}