/* =====================================================
   Exhibition Tracker — Stylesheet
   Aesthetic: editorial paper + data dashboard
   ===================================================== */

/* ---------- Reset & Tokens ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Paper warm palette */
  --bg: #f5f1e8;
  --bg-soft: #faf7f0;
  --bg-card: #fdfaf3;

  /* Ink */
  --ink-1: #1a1f1a;
  --ink-2: #4a5048;
  --ink-3: #8a8a82;
  --ink-4: #b8b4a3;

  /* Rule lines */
  --rule: #d8d2bf;
  --rule-soft: #e8e2cf;

  /* Accents */
  --accent: #b83d26; /* brick red */
  --accent-soft: #e8d2c8;
  --accent-2: #3d5a2c; /* deep green */
  --accent-3: #2d4a6b; /* deep blue */

  /* States */
  --ok: #4f7a4a;
  --ok-bg: #e3ecdf;
  --warn: #c68a2e;
  --warn-bg: #f3e6c8;
  --muted: #8a8a82;
  --muted-bg: #e6e3d8;
  --danger: #b83d26;
  --danger-bg: #f0d8d0;

  /* Type */
  --font-serif: "Noto Serif TC", "Source Han Serif TC", Georgia, serif;
  --font-sans: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Cascadia Code", Menlo, monospace;

  /* Layout */
  --max-w: 1280px;
  --gutter: clamp(16px, 3vw, 32px);
  --radius: 4px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--ink-1);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 18% 12%, rgba(184, 61, 38, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 88% 78%, rgba(61, 90, 44, 0.04) 0%, transparent 45%);
  background-attachment: fixed;
  line-height: 1.55;
  font-size: 15px;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: color 0.18s ease, text-decoration-color 0.18s ease;
}
a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
}

code {
  font-family: var(--font-mono);
}

/* ---------- Layout shell ---------- */
.page {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(20px, 4vw, 48px) var(--gutter) 80px;
  animation: pageIn 0.5s ease-out both;
}

@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Masthead ---------- */
.masthead {
  border-top: 3px solid var(--ink-1);
  border-bottom: 1px solid var(--rule);
  padding: 22px 0 18px;
  margin-bottom: 28px;
}

.masthead-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.masthead-title h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-1);
}

.masthead-sub {
  margin-top: 6px;
  font-size: 13px;
  color: var(--ink-2);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.masthead-sub .dot {
  margin: 0 6px;
  color: var(--ink-4);
}

.masthead-status {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Refresh button */
.refresh-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--ink-1);
  color: var(--bg-soft);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: background 0.18s ease, transform 0.18s ease;
}
.refresh-btn:hover {
  background: var(--accent);
}
.refresh-btn:active {
  transform: translateY(1px);
}
.refresh-btn svg {
  transition: transform 0.4s ease;
}
.refresh-btn.is-loading svg {
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Status detail */
.status-detail {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-4);
  display: inline-block;
  transition: background 0.18s ease;
}
.status-dot.is-ok {
  background: var(--ok);
  box-shadow: 0 0 0 3px var(--ok-bg);
}
.status-dot.is-loading {
  background: var(--warn);
  animation: pulse 1.2s ease-in-out infinite;
}
.status-dot.is-error {
  background: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-bg);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 var(--warn-bg);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 5px transparent;
  }
}

/* ---------- Subscribe section ---------- */
.subscribe {
  background: var(--bg-card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.subscribe-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.subscribe-link {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  justify-content: space-between;
}

#subscribe-url {
  flex: 1 1 320px;
  font-size: 13px;
  color: var(--ink-2);
  background: var(--bg);
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px dashed var(--rule);
  word-break: break-all;
}

.subscribe-actions {
  display: flex;
  gap: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: all 0.18s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #9c3220;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--ink-1);
  border-color: var(--ink-1);
}
.btn-ghost:hover {
  background: var(--ink-1);
  color: var(--bg-soft);
}
.btn-ghost.is-copied {
  background: var(--ok);
  color: #fff;
  border-color: var(--ok);
}

/* ---------- Filters ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  margin-bottom: 12px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink-2);
  background: transparent;
  border: 1px solid var(--rule);
  border-radius: 999px;
  transition: all 0.18s ease;
}
.chip:hover {
  border-color: var(--ink-2);
  color: var(--ink-1);
}
.chip.active {
  background: var(--ink-1);
  color: var(--bg-soft);
  border-color: var(--ink-1);
}

.chip-alt.active {
  background: var(--accent-3);
  border-color: var(--accent-3);
}

.filter-search {
  flex: 1 1 240px;
  max-width: 360px;
  margin-left: auto;
}

#search-input {
  width: 100%;
  padding: 8px 14px;
  font: inherit;
  font-size: 13px;
  color: var(--ink-1);
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  transition: border-color 0.18s ease;
}
#search-input:focus {
  outline: none;
  border-color: var(--ink-1);
}
#search-input::placeholder {
  color: var(--ink-4);
}

/* ---------- Meta bar ---------- */
.meta-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--ink-2);
  font-family: var(--font-mono);
  margin: 14px 0 18px;
  letter-spacing: 0.02em;
}
.meta-bar .dot {
  color: var(--ink-4);
}
#result-count strong {
  color: var(--ink-1);
}

/* ---------- Table ---------- */
.data-region {
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
}

.exh-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.exh-table thead th {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-align: left;
  padding: 14px 16px;
  background: var(--bg-card);
  border-bottom: 2px solid var(--ink-1);
  position: sticky;
  top: 0;
  z-index: 1;
  white-space: nowrap;
}

.exh-table tbody tr {
  border-bottom: 1px solid var(--rule-soft);
  transition: background 0.15s ease;
}
.exh-table tbody tr:hover {
  background: var(--bg);
}
.exh-table tbody tr:last-child {
  border-bottom: none;
}
.exh-table tbody tr.is-expired {
  opacity: 0.5;
}
.exh-table tbody tr.is-imminent {
  background: linear-gradient(
    to right,
    rgba(184, 61, 38, 0.06),
    transparent 30%
  );
}

.exh-table td {
  padding: 14px 16px;
  vertical-align: top;
}

/* Column-specific */
.col-name {
  width: 28%;
}
.col-date {
  width: 130px;
  white-space: nowrap;
}
.col-countdown {
  width: 90px;
  white-space: nowrap;
}
.col-industry {
  width: 110px;
}
.col-location {
  width: 70px;
}
.col-confidence {
  width: 70px;
  text-align: center;
}
.col-status {
  width: 90px;
}
.col-source {
  width: 90px;
}

/* Cell content */
.cell-name {
  display: block;
  font-weight: 500;
  color: var(--ink-1);
  text-decoration: none;
  line-height: 1.4;
}
.cell-name:hover {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
}

.cell-organizer {
  display: block;
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 4px;
  line-height: 1.3;
}

.cell-stocks {
  display: inline-block;
  margin-top: 4px;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 2px;
}

.cell-date {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-1);
  font-weight: 500;
  line-height: 1.4;
}
.cell-date-end {
  display: block;
  font-size: 11px;
  color: var(--ink-3);
  margin-top: 2px;
}

.cell-countdown {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
}
.cell-countdown.is-future {
  color: var(--ink-1);
}
.cell-countdown.is-imminent {
  color: var(--accent);
  font-weight: 700;
}
.cell-countdown.is-ongoing {
  color: var(--ok);
  font-weight: 700;
}
.cell-countdown.is-past {
  color: var(--ink-4);
}

/* Badges & tags */
.tag {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 2px;
  background: var(--muted-bg);
  color: var(--ink-2);
  margin: 1px 2px 1px 0;
  white-space: nowrap;
}
.tag-industry {
  background: var(--bg);
  color: var(--ink-2);
  border: 1px solid var(--rule);
}
.tag-location-tw {
  background: #dde7d8;
  color: var(--accent-2);
}
.tag-location-world {
  background: #e0e8f0;
  color: var(--accent-3);
}

.tag-status-ok {
  background: var(--ok-bg);
  color: var(--ok);
}
.tag-status-warn {
  background: var(--warn-bg);
  color: var(--warn);
}
.tag-status-expired {
  background: var(--muted-bg);
  color: var(--muted);
}

.tag-source {
  background: transparent;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  border: 1px solid var(--rule);
}

.confidence-mark {
  font-size: 14px;
  line-height: 1;
}

/* ---------- Empty / Error states ---------- */
.empty-state,
.error-state {
  padding: 48px 24px;
  text-align: center;
  color: var(--ink-3);
  font-size: 14px;
}
.error-state {
  color: var(--danger);
  background: var(--danger-bg);
}
.error-state p {
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ---------- Foot ---------- */
.page-foot {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
  font-size: 12px;
  color: var(--ink-3);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}
.page-foot a {
  color: var(--ink-2);
}
.page-foot a:hover {
  color: var(--accent);
}

/* ---------- Mobile (<= 720px) — table → cards ---------- */
@media (max-width: 720px) {
  body {
    font-size: 14px;
  }

  .masthead {
    padding-top: 16px;
  }

  .masthead-row {
    align-items: flex-start;
  }

  .masthead-status {
    width: 100%;
    justify-content: space-between;
  }

  .filters {
    gap: 10px;
  }

  .filter-group {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }
  .filter-group::-webkit-scrollbar {
    display: none;
  }
  .chip {
    flex: 0 0 auto;
  }

  .filter-search {
    margin-left: 0;
    width: 100%;
    max-width: none;
  }

  .data-region {
    background: transparent;
    border: none;
  }

  .exh-table thead {
    display: none;
  }

  .exh-table,
  .exh-table tbody,
  .exh-table tr,
  .exh-table td {
    display: block;
    width: 100% !important;
  }

  .exh-table tbody tr {
    background: var(--bg-soft);
    border: 1px solid var(--rule);
    border-radius: var(--radius);
    margin-bottom: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--rule);
  }
  .exh-table tbody tr:hover {
    background: var(--bg-card);
  }

  .exh-table td {
    padding: 4px 0;
    border: none;
  }

  /* Mobile: name on top, then rows of label+content */
  .exh-table td.col-name {
    padding-bottom: 10px;
    margin-bottom: 8px;
    border-bottom: 1px dashed var(--rule);
  }
  .exh-table td:not(.col-name)::before {
    content: attr(data-label);
    display: inline-block;
    width: 64px;
    font-size: 11px;
    color: var(--ink-3);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-right: 8px;
    vertical-align: top;
  }

  .col-name,
  .col-date,
  .col-countdown,
  .col-industry,
  .col-location,
  .col-confidence,
  .col-status,
  .col-source {
    width: auto !important;
  }
}

/* ---------- Tiny details ---------- */
::selection {
  background: var(--ink-1);
  color: var(--bg-soft);
}