/* ============================================================
   RCAI · DEMO HUB — Institutional Graphite Style Kit
   Hard-edge, corporate SZRCAI type, accent #479BBF.
   Shared by the hub dashboard and every project showcase page.
   ============================================================ */

@font-face {
  font-family: 'SZRCAI';
  src: url('../fonts/SZRCAI.ttf') format('truetype');
  font-weight: 400 900;
  font-display: swap;
}
@font-face {
  font-family: 'SZRCAI Mono';
  src: url('../fonts/SZRCAI_mono.ttf') format('truetype');
  font-weight: 400 700;
  font-display: swap;
}

:root {
  /* Core — Institutional Graphite */
  --bg-color: #14171E;
  --bg-deep: #0F1218;
  --surface-bg: #1B1F27;
  --surface-bg-hover: #20242E;
  --border-color: #363D4C;
  --border-strong: #454E60;

  /* Accents */
  --accent: #479BBF;
  --accent-dim: #2F6B85;
  --pass: #51CF66;
  --fail: #F0697A;
  --warn: #FFB454;

  /* Text */
  --text-main: #E8EAF0;
  --text-muted: #8E96A8;
  --text-dark: #5D6577;

  /* No radius — hard edge */
  --radius: 0px;
  --transition: none;
}

* { box-sizing: border-box; margin: 0; padding: 0; border-radius: 0 !important; }

html { scroll-behavior: smooth; }

body {
  font-family: 'SZRCAI', system-ui, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
}

.mono { font-family: 'SZRCAI Mono', monospace; }

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

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-color); }
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }

/* grid-paper backdrop on deep surfaces */
.gridpaper {
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: -1px -1px;
  opacity: 0.06;
}

/* ===================== SIDEBAR ===================== */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--surface-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  z-index: 10;
}

.brand {
  display: flex; align-items: center; gap: 12px;
  padding: 0 24px 28px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 24px;
}
.logo-box { display: flex; align-items: center; justify-content: center; }
.logo-box img { width: 30px; height: 30px; }
.brand-text { font-size: 19px; font-weight: 800; letter-spacing: -0.02em; }
.brand-text b { color: var(--accent); }

.nav-menu { flex: 1; display: flex; flex-direction: column; padding: 0 16px; overflow-y: auto; }
.nav-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-dark); margin: 16px 8px 8px; font-weight: 700;
}
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 12px; color: var(--text-muted);
  font-weight: 500; font-size: 14px;
  border-left: 2px solid transparent; cursor: pointer;
}
.nav-item .mono-idx { font-family: 'SZRCAI Mono', monospace; font-size: 10px; color: var(--text-dark); }
.nav-item:hover { background: var(--surface-bg-hover); color: var(--text-main); text-decoration: none; }
.nav-item.active { background: var(--surface-bg-hover); color: var(--text-main); border-left-color: var(--accent); }
.nav-item .badge { margin-left: auto; }

.sidebar-bottom { padding: 0 24px; }
.user-profile { display: flex; align-items: center; gap: 12px; padding-top: 24px; border-top: 1px solid var(--border-color); }
.avatar {
  width: 34px; height: 34px; background: var(--surface-bg-hover);
  border: 1px solid var(--border-strong); color: var(--text-main);
  display: grid; place-items: center; font-weight: 800; font-size: 14px;
}
.user-info .name { font-size: 13px; font-weight: 700; }
.user-info .role { font-size: 10px; color: var(--text-muted); }

.back-link {
  display: flex; align-items: center; gap: 8px;
  margin: 0 16px 8px; padding: 9px 12px;
  font-family: 'SZRCAI Mono', monospace; font-size: 12px;
  color: var(--accent); border: 1px solid var(--border-color);
}
.back-link:hover { background: var(--surface-bg-hover); text-decoration: none; }

/* ===================== MAIN ===================== */
.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; background: var(--bg-color); }

.top-header {
  height: 64px; padding: 0 40px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border-color); background: var(--surface-bg);
}
.breadcrumbs { font-size: 12px; color: var(--text-muted); }
.breadcrumbs .sep { margin: 0 8px; color: var(--text-dark); }
.breadcrumbs .current { color: var(--text-main); }
.header-actions { display: flex; align-items: center; gap: 16px; }

.search-box { display: flex; align-items: center; border: 1px solid var(--border-color); background: var(--bg-color); padding: 0 12px; }
.search-box .mono-prefix { font-size: 12px; color: var(--accent); margin-right: 8px; }
.search-box input { background: transparent; border: none; color: var(--text-main); padding: 8px 0; font-family: inherit; font-size: 13px; width: 200px; }
.search-box input:focus { outline: none; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border: 1px solid var(--accent); background: transparent;
  color: var(--accent); font-family: 'SZRCAI Mono', monospace; font-size: 12px; cursor: pointer;
}
.btn:hover { background: var(--accent); color: #000; text-decoration: none; }
.btn-ghost { border-color: var(--border-strong); color: var(--text-muted); }
.btn-ghost:hover { background: var(--surface-bg-hover); color: var(--text-main); border-color: var(--border-strong); }

.content-scroll { flex: 1; overflow-y: auto; padding: 32px 40px 80px; position: relative; }

.sec-label { font-family: 'SZRCAI Mono', monospace; font-size: 10px; letter-spacing: 0.12em; color: var(--text-dark); margin-bottom: 8px; text-transform: uppercase; }
.page-title-row { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 32px; gap: 24px; flex-wrap: wrap; }
.page-title { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; }
.page-sub { font-size: 14px; color: var(--text-muted); margin-top: 10px; max-width: 720px; line-height: 1.55; }

.meta-badge {
  font-family: 'SZRCAI Mono', monospace; font-size: 11px;
  display: flex; align-items: center; gap: 8px;
  border: 1px solid var(--border-color); padding: 5px 9px; background: var(--surface-bg);
}
.meta-badge .lbl { color: var(--text-muted); }
.meta-badge .val { color: var(--text-main); }
.meta-badge .accent { color: var(--accent); border-left: 1px solid var(--border-color); padding-left: 8px; }

/* ===================== BENTO GRID ===================== */
.bento-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; grid-auto-rows: minmax(140px, auto); }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.row-span-2 { grid-row: span 2; }

.bento-card { background: var(--surface-bg); border: 1px solid var(--border-color); padding: 24px; display: flex; flex-direction: column; }

.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 12px; }
.card-title { font-size: 14px; color: var(--text-muted); }
.view-all { font-size: 11px; color: var(--accent); font-family: 'SZRCAI Mono', monospace; }

/* ===================== PROJECT LAUNCHER CARD ===================== */
.proj-card {
  position: relative; background: var(--surface-bg);
  border: 1px solid var(--border-color); padding: 0;
  display: flex; flex-direction: column; overflow: hidden;
  transition: none; cursor: pointer;
}
.proj-card:hover { border-color: var(--accent); background: var(--surface-bg-hover); text-decoration: none; }
.proj-card:hover .proj-open { color: #000; background: var(--accent); }
.proj-card:hover .proj-idx { color: var(--accent); }

.proj-top { display: flex; align-items: flex-start; justify-content: space-between; padding: 22px 22px 0; }
.proj-idx { font-family: 'SZRCAI Mono', monospace; font-size: 12px; color: var(--text-dark); letter-spacing: 0.1em; }
.proj-glyph { font-size: 26px; line-height: 1; }
.proj-body { padding: 14px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.proj-name { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 8px; }
.proj-desc { font-size: 13px; color: var(--text-muted); line-height: 1.5; flex: 1; }
.proj-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
.proj-foot { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border-color); padding: 12px 22px; }
.proj-stat { font-family: 'SZRCAI Mono', monospace; font-size: 11px; color: var(--text-muted); }
.proj-stat b { color: var(--text-main); }
.proj-open { font-family: 'SZRCAI Mono', monospace; font-size: 11px; color: var(--accent); border: 1px solid var(--accent); padding: 5px 10px; }

/* ===================== CHIPS / BADGES ===================== */
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: 'SZRCAI Mono', monospace; font-size: 10px;
  padding: 3px 8px; border: 1px solid var(--border-strong); color: var(--text-muted);
}
.badge { font-size: 11px; font-weight: 800; padding: 2px 6px; font-family: 'SZRCAI Mono', monospace; }
.badge.ok { color: var(--pass); border: 1px solid var(--pass); }
.badge.warn { color: var(--warn); border: 1px solid var(--warn); }
.badge.fail { color: var(--fail); border: 1px solid var(--fail); }
.badge.live { color: var(--accent); border: 1px solid var(--accent); }

.dot { width: 7px; height: 7px; display: inline-block; }
.dot.ok { background: var(--pass); }
.dot.warn { background: var(--warn); }
.dot.live { background: var(--accent); }

/* ===================== STAT / METRIC ===================== */
.stat-card { justify-content: center; }
.stat-label { font-size: 11px; color: var(--text-dark); margin-bottom: 8px; font-family: 'SZRCAI Mono', monospace; letter-spacing: 0.05em; }
.stat-value { font-size: 32px; font-weight: 900; letter-spacing: -0.02em; font-family: 'SZRCAI Mono', monospace; }
.stat-unit { font-size: 15px; color: var(--text-dark); font-weight: 400; }
.stat-sub { font-size: 11px; color: var(--text-muted); margin-top: 6px; font-family: 'SZRCAI Mono', monospace; }
.pass-text { color: var(--pass); } .fail-text { color: var(--fail); } .warn-text { color: var(--warn); } .accent-text { color: var(--accent); }

/* ===================== SHOWCASE BLOCKS ===================== */
.section-block { margin-top: 40px; }
.section-block:first-of-type { margin-top: 0; }
.block-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 18px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.block-head h2 { font-size: 18px; font-weight: 800; letter-spacing: -0.01em; }
.block-head .num { font-family: 'SZRCAI Mono', monospace; font-size: 12px; color: var(--accent); }
.block-head .hint { margin-left: auto; font-size: 12px; color: var(--text-muted); font-family: 'SZRCAI Mono', monospace; }

.prose { font-size: 14px; color: var(--text-muted); line-height: 1.65; max-width: 760px; }
.prose b, .prose strong { color: var(--text-main); font-weight: 700; }
.prose code { font-family: 'SZRCAI Mono', monospace; font-size: 12px; color: var(--accent); background: var(--bg-deep); padding: 1px 5px; border: 1px solid var(--border-color); }

.fig { border: 1px solid var(--border-color); background: var(--bg-deep); }
.fig img { display: block; width: 100%; height: auto; }
.fig figcaption { font-family: 'SZRCAI Mono', monospace; font-size: 11px; color: var(--text-muted); padding: 10px 14px; border-top: 1px solid var(--border-color); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

.feature { border: 1px solid var(--border-color); background: var(--surface-bg); padding: 20px; }
.feature .ico { font-size: 22px; margin-bottom: 12px; }
.feature h3 { font-size: 15px; font-weight: 700; margin-bottom: 8px; }
.feature p { font-size: 13px; color: var(--text-muted); line-height: 1.55; }

/* metric tiles */
.metric { border: 1px solid var(--border-color); background: var(--surface-bg); padding: 20px; }
.metric .k { font-family: 'SZRCAI Mono', monospace; font-size: 10px; color: var(--text-dark); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 10px; }
.metric .v { font-size: 30px; font-weight: 900; font-family: 'SZRCAI Mono', monospace; letter-spacing: -0.02em; }
.metric .d { font-size: 12px; color: var(--text-muted); margin-top: 8px; line-height: 1.5; }

/* data table */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 11px 16px; text-align: left; border-bottom: 1px solid var(--border-color); }
.data-table th { font-size: 10px; color: var(--text-dark); font-family: 'SZRCAI Mono', monospace; text-transform: uppercase; letter-spacing: 0.05em; }
.data-table td { font-size: 13px; }
.data-table td.mono { font-family: 'SZRCAI Mono', monospace; color: var(--text-muted); }
.data-table tr:hover td { background: var(--surface-bg-hover); }
.data-table tr:last-child td { border-bottom: none; }

/* type specimen (corp-font page) */
.specimen { border: 1px solid var(--border-color); background: var(--surface-bg); padding: 28px; }
.specimen .row { padding: 16px 0; border-bottom: 1px solid var(--border-color); }
.specimen .row:last-child { border-bottom: none; }
.specimen .meta { font-family: 'SZRCAI Mono', monospace; font-size: 10px; color: var(--text-dark); margin-bottom: 8px; }
.specimen .glyphline { line-height: 1.1; letter-spacing: -0.01em; word-break: break-word; }

/* responsive */
@media (max-width: 1100px) {
  .bento-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .col-span-3, .col-span-4 { grid-column: span 2; }
}
@media (max-width: 760px) {
  body { overflow: auto; height: auto; flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 12px 16px; }
  .nav-menu, .sidebar-bottom { display: none; }
  .brand { border: none; margin: 0; padding: 0; }
  .main-content { overflow: visible; }
  .content-scroll { overflow: visible; padding: 20px; }
  .bento-grid, .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .col-span-2, .col-span-3, .col-span-4 { grid-column: span 1; }
  .top-header { padding: 0 20px; }
  .search-box { display: none; }
}