/* ── SELF-HOSTED FONTS ───────────────────────────────────────────────── */
@font-face { font-family: 'Manrope'; font-style: normal; font-weight: 200 800; font-display: swap; src: url('../fonts/manrope-variable.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: normal;  font-weight: 700; font-display: swap; src: url('../fonts/fraunces-700-normal.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: normal;  font-weight: 900; font-display: swap; src: url('../fonts/fraunces-900-normal.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: italic;  font-weight: 300; font-display: swap; src: url('../fonts/fraunces-300-italic.woff2') format('woff2'); }
@font-face { font-family: 'Fraunces'; font-style: italic;  font-weight: 700; font-display: swap; src: url('../fonts/fraunces-700-italic.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/jetbrains-mono-400.woff2') format('woff2'); }
@font-face { font-family: 'JetBrains Mono'; font-style: normal; font-weight: 600; font-display: swap; src: url('../fonts/jetbrains-mono-600.woff2') format('woff2'); }

/* ════════════════════════════════════════════════════════════════════════
   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, small labels
     JetBrains Mono  numeric monospace  table data
   ════════════════════════════════════════════════════════════════════════ */

/* ── 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;
}


/* 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: 100;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 18px 32px;
  gap: 28px;
}

.utci-topnav a {
  font-family: Manrope, sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.06em;
  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 */
}

/* Desktop: nav-links renders inline as part of nav flex row */
.utci-topnav .nav-links {
  display: contents; /* participates in nav's flex layout transparently */
}

/* Nav logo — hidden on desktop, shown on mobile */
.nav-logo {
  display: none;
}
.nav-logo-wordmark {
  display: flex;
  align-items: center;
  gap: 0.05em;
}
.nav-logo-sun,
.nav-logo-scope {
  font-family: Manrope, sans-serif;
  font-weight: 250;
  font-size: 2.1rem;
  color: #1e1208;
  letter-spacing: -0.01em;
}
.nav-logo-icon {
  width: 1.65rem;
  height: 1.65rem;
  color: #1e1208;
  flex-shrink: 0;
}
.nav-logo-tag {
  display: block;
  font-family: Manrope, sans-serif;
  font-style: normal;
  font-weight: 600;
  font-size: 8px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7a5c2a;
  margin-top: 3px;
}

/* Desktop: overlay hidden */
.utci-topnav .nav-overlay {
  display: none;
}

/* ── Burger button (hidden on desktop) ─────────────────────────────── */
.utci-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 110;
  flex-shrink: 0;
}

.utci-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #7a5c2a;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

/* ── Mobile nav drawer ──────────────────────────────────────────────── */
@media (max-width: 640px) {
  .utci-app {
    padding: 96px 16px 24px; /* 96px = 72px nav height + 24px breathing room */
  }

  /* Show wordmark in nav bar, hide it from main content */
  .nav-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    text-align: center;
    pointer-events: none;
  }

  .nav-logo-wordmark {
    display: block;
    line-height: 1;
  }

  .utci-title,
  .utci-tagline {
    display: none;
  }

  .utci-topnav {
    position: fixed;
    padding: 10px 20px;
    height: 72px;
    background: #f5edd6;
    border-bottom: 1px solid #e0d0a8;
  }

  .utci-burger {
    display: flex;
  }

  /* Hide the links by default on mobile — shown in drawer */
  .utci-topnav .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 220px;
    height: 100vh;
    background: #f5edd6;
    border-left: 1px solid #e0d0a8;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 80px 32px 32px;
    gap: 28px;
    transition: right 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 24px rgba(100,70,20,0.08);
    z-index: 105;
  }

  .utci-topnav .nav-links.is-open {
    right: 0;
  }

  .utci-topnav .nav-links a {
    font-size: 15px;
  }

  /* Burger → X animation */
  .utci-topnav.nav-open .utci-burger span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .utci-topnav.nav-open .utci-burger span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
  }
  .utci-topnav.nav-open .utci-burger span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Overlay behind drawer */
  .utci-topnav .nav-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(30,18,8,0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
    z-index: 104;
  }

  .utci-topnav.nav-open .nav-overlay {
    opacity: 1;
    pointer-events: auto;
  }
}
