/* ============================================================
   WSF Hub — Shared Design System  v2.0
   Link from every hub page:
     <link rel="stylesheet" href="{{ url_for('static', filename='hub.css') }}">
   ============================================================ */

/* ── Design tokens ───────────────────────────────────────────────────────── */
:root {
  --bg:           #f6f1ea;   /* warm paper */
  --bg-elev:      #fbf8f3;   /* card surface */
  --bg-sunk:      #ede6dc;   /* recessed wells */
  --ink:          #1c1714;   /* near-black, warm */
  --ink-2:        #4a423b;   /* secondary text */
  --ink-3:        #8b8278;   /* tertiary / labels */
  --rule:         #e2d8c8;   /* divider lines */
  --rule-strong:  #c8bba5;
  --accent:       #e07a2c;   /* WSF orange */
  --accent-deep:  #b85d18;
  --accent-soft:  #f6e3d0;
  --ok:           #4f7a3a;
  --ok-soft:      #eaf2e6;
  --warn:         #c08a1a;
  --warn-soft:    #fdf3d8;
  --bad:          #b04a2c;
  --bad-soft:     #faeae6;

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 14px;

  --font-ui:      'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Source Serif 4', Georgia, serif;
  --font-mono:    'JetBrains Mono', ui-monospace, Menlo, monospace;

  --shadow-sm: 0 1px 0 rgba(28,23,20,0.04), 0 1px 2px  rgba(28,23,20,0.04);
  --shadow:    0 1px 0 rgba(28,23,20,0.04), 0 4px 12px rgba(28,23,20,0.06);
  --shadow-lg: 0 1px 0 rgba(28,23,20,0.04), 0 12px 32px rgba(28,23,20,0.10);
}

/* ── Reset ───────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

/* ── Base body ───────────────────────────────────────────────────────────── */
body {
  font-family: var(--font-ui);
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-feature-settings: "ss01", "cv11";
}

/* Subtle paper grain */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(28,23,20,0.012) 0 1px,
    transparent 1px 6px
  );
  z-index: 0;
}

/* ── Gate ────────────────────────────────────────────────────────────────── */
.gate {
  position: fixed; inset: 0;
  z-index: 50;
  display: grid; place-items: center;
  background: var(--bg);
  transition: opacity .35s ease, visibility .35s;
}
.gate.hidden { opacity: 0; visibility: hidden; }

.gate-card {
  width: min(420px, calc(100% - 32px));
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: var(--radius-lg);
  padding: 36px 32px 28px;
  box-shadow: var(--shadow-lg);
}
.gate-mark {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 28px;
}
.gate-mark .gate-logo {
  width: 48px; height: 48px; flex-shrink: 0;
  color: var(--accent);
}
.gate-mark-text {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3);
}
.gate h1 {
  font-family: var(--font-display);
  font-weight: 600; font-size: 26px;
  line-height: 1.2; margin: 0 0 6px;
  letter-spacing: -0.01em;
}
.gate p {
  color: var(--ink-2); font-size: 14px;
  margin: 0 0 22px; line-height: 1.5;
}
.gate-form { display: flex; flex-direction: column; gap: 10px; }
.gate-input {
  width: 100%; height: 44px; padding: 0 14px;
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  font: 500 15px var(--font-ui);
  color: var(--ink); outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.gate-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(224,122,44,0.15);
}
.gate-input.error {
  border-color: var(--bad);
  animation: shake .35s;
}
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-4px); }
  75%      { transform: translateX(4px); }
}
.gate-btn {
  height: 44px; border: 0;
  border-radius: var(--radius);
  background: var(--ink); color: var(--bg);
  font: 600 14px var(--font-ui);
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: background .15s, transform .05s;
}
.gate-btn:hover  { background: #2a2320; }
.gate-btn:active { transform: translateY(1px); }
.gate-foot {
  margin-top: 18px; padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--ink-3);
  display: flex; justify-content: space-between;
}
.gate-error {
  color: var(--bad); font-size: 12.5px;
  min-height: 16px; margin: 4px 2px 0;
}

/* ── App shell ───────────────────────────────────────────────────────────── */
.app {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column;
  opacity: 0;
  transition: opacity .4s ease;
}
.app.ready { opacity: 1; }

/* ── Sticky header ───────────────────────────────────────────────────────── */
header {
  border-bottom: 1px solid var(--rule);
  background: rgba(246,241,234,0.88);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 10;
}
.header-inner {
  max-width: 1180px; margin: 0 auto;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  text-decoration: none; color: inherit;
}
.brand-mark-sm {
  width: 32px; height: 32px; flex-shrink: 0;
  color: var(--accent);
}
.brand-name { display: flex; flex-direction: column; line-height: 1; }
.brand-name .word {
  font-family: var(--font-display);
  font-weight: 600; font-size: 17px;
  letter-spacing: -0.005em;
}
.brand-name .sub {
  font-family: var(--font-mono);
  font-size: 9.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-3);
  margin-top: 4px;
}
.header-meta {
  margin-left: auto;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--font-mono); font-size: 11px; color: var(--ink-2);
}
.header-date {
  letter-spacing: 0.04em; text-transform: uppercase; color: var(--ink-3);
}
.status-row { display: flex; gap: 8px; }
.status-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 9px 5px 8px;
  background: var(--bg-elev);
  border: 1px solid var(--rule);
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.04em; color: var(--ink-2);
  cursor: default; transition: border-color .15s;
}
.status-chip:hover { border-color: var(--rule-strong); }
.status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 2px rgba(79,122,58,0.18);
  flex: 0 0 auto;
}
.status-chip.warn .status-dot { background: var(--warn); box-shadow: 0 0 0 2px rgba(192,138,26,0.18); }
.status-chip.bad  .status-dot { background: var(--bad);  box-shadow: 0 0 0 2px rgba(176,74,44,0.18); }

/* Back / nav link — used on sub-pages */
.back-btn {
  font-size: 12px; font-weight: 600; color: var(--ink-3);
  border: 1px solid var(--rule); border-radius: var(--radius-sm);
  background: transparent; padding: 5px 12px;
  text-decoration: none; display: inline-flex; align-items: center; gap: 5px;
  transition: border-color .12s, color .12s; cursor: pointer;
}
.back-btn:hover { border-color: var(--rule-strong); color: var(--ink); }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--rule);
  padding: 22px 28px;
  color: var(--ink-3);
  font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.footer-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; gap: 16px;
}
.footer-inner .sep   { color: var(--rule-strong); }
.footer-inner a      { color: inherit; text-decoration: none; border-bottom: 1px dotted currentColor; }
.footer-inner a:hover { color: var(--accent); }
.footer-right { margin-left: auto; }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 24px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: var(--bg);
  padding: 11px 16px; border-radius: 8px;
  font: 500 13px var(--font-ui);
  box-shadow: var(--shadow-lg);
  opacity: 0; pointer-events: none;
  transition: opacity .2s, transform .2s;
  z-index: 30;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Responsive base ─────────────────────────────────────────────────────── */
@media (max-width: 520px) {
  .header-inner { padding: 12px 16px; }
  .header-date  { display: none; }
  .status-row .status-chip:not(:first-child) { display: none; }
  footer { padding: 18px 16px; }
}