/* ════════════════════════════════════════════════════════════════════════
   base.css — Fonts, reset, page shell, and top navigation.
   ════════════════════════════════════════════════════════════════════════

   COLOUR PALETTE  (the "warm parchment & brass" theme)
   ──────────────────────────────────────────────────────────────────────
     #f5edd6   parchment             page background
     #fffcf2   soft cream            cards, search box, table
     #fdf8ee   warm cream            toolbars, legend, about block
     #f0e4c4   pale honey            table heading row
     #fef3dc   warm hover            buttons on hover
     #fef8ea   row hover             table row on hover
     #fff8e4   "now" row             the currently-active hour
     #1e1208   espresso              headings + emphasis
     #4a3420   warm dark             body text in the table
     #6b4f2a   muted bronze          subtle emphasis
     #7a5c2a   tagline brown         italic intro line
     #9a7d5a   soft brown            column toggle text
     #b09870   warm grey             muted labels
     #c0a880   pale dust             night-row text, footer
     #c8922a   BRASS                 brand accent (links, dial, focus)
     #a06e18   deep brass            hover state for some links
     #c9b08a   warm border           panel borders
     #d4c0a0   soft border           toolbar/legend borders
     #ede4cc   line                  table row dividers

   FONTS
   ──────────────────────────────────────────────────────────────────────
     Fraunces        serif display      titles, day labels, hour cell
     Manrope         body sans-serif    paragraphs
     JetBrains Mono  numeric monospace  table data, small labels
   ════════════════════════════════════════════════════════════════════════ */


/* ── 1. FONTS + RESET ───────────────────────────────────────────────── */

/* Font loading is handled in index.html via a non-blocking <link rel="preload">
   to avoid render-blocking. The @import has been intentionally removed. */

*,
*:before,
*:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}


/* ── 2. PAGE BACKGROUND & SHELL ─────────────────────────────────────── */

body {
  background: #f5edd6;                  /* parchment */
}

.utci-app {
  font-family: Manrope, sans-serif;
  color: #1e1208;
  background: #f5edd6;
  min-height: 100vh;
  padding: 52px 36px 32px;
  position: relative;
  /* overflow-x: clip (not hidden) — `clip` clips horizontal overflow
     WITHOUT making this a scroll container, so `position: sticky` on
     descendants (table <th>) can still stick relative to the viewport.
     `hidden` would create a containing block that breaks sticky. */
  overflow-x: clip;
}

/* Two big soft glows in the corners — pure decoration.
   Comment one out to remove that side's glow. */
.lens-bloom-a {
  position: fixed;
  top: -200px;
  left: -200px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(255, 210, 60, 0.18) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.lens-bloom-b {
  position: fixed;
  top: -80px;
  right: -140px;
  width: 520px;
  height: 420px;
  background: radial-gradient(ellipse, rgba(200, 146, 42, 0.13) 0%, transparent 68%);
  pointer-events: none;
  z-index: 0;
}

/* The centred container that holds everything. */
.utci-shell {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
}


/* ── 3. TOP NAVIGATION  (Home / About links in the corner) ──────────── */

.utci-topnav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 18px 32px;
  gap: 28px;
}

.utci-topnav a {
  font-family: JetBrains Mono, monospace;
  font-size: 16px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #b09870;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.utci-topnav a:hover {
  color: #c8922a;                       /* brass on hover */
  border-bottom-color: #c8922a80;       /* faint underline */
}