/* ════════════════════════════════════════════════════════════
   tools/thai-date/style.css — พ.ศ. ↔ ค.ศ. Year Converter
   UI character: BIG SWAP CARD — 2 ปียักษ์ ซ้าย-ขวา + swap button
   Theme: Warm gold/cream (historical Thai feel)
   ════════════════════════════════════════════════════════════ */

body.tool-thai-date {
  --page-bg:    #F5F0E6;        /* warm cream */
  --card-bg:    #FFFFFF;
  --card-soft:  #FAF5EB;
  --ink:        #1A1611;
  --text:       #2A2520;
  --muted:      #7A6F60;
  --hairline:   #E8DFD0;

  --gold:       #B8862F;
  --gold-deep:  #8B6520;
  --gold-soft:  #F5E6C8;
  --gold-light: #FAEFD8;

  --r-card:     28px;
  --r-pill:     999px;
  --r-input:    16px;
  --shadow-soft: 0 1px 2px rgba(120,90,30,.04), 0 12px 32px -20px rgba(120,90,30,.12);

  background: var(--page-bg);
  color: var(--text);
}

body.tool-thai-date main.container,
body.tool-thai-date .site-header-inner {
  max-width: 1180px;
  padding-inline: clamp(16px, 3vw, 28px);
}

body.tool-thai-date .back-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--muted); font-size: 13.5px;
  text-decoration: none; margin: 20px 0 16px; font-weight: 500;
}
body.tool-thai-date .back-link:hover { color: var(--ink); }

/* hero */
.td-hero {
  padding: clamp(20px, 4vw, 40px) 4px clamp(20px, 4vw, 32px);
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.td-eyebrow {
  font-size: 11px; letter-spacing: .2em; font-weight: 600;
  color: var(--gold); text-transform: uppercase; margin: 0 0 16px;
}
.td-h1 {
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.1; font-weight: 700; letter-spacing: -.02em;
  color: var(--ink); margin: 0 0 14px;
}
.td-h1 em { font-style: normal; color: var(--gold); }
.td-sub {
  font-size: 15px; color: var(--muted); margin: 0 auto;
  line-height: 1.55; max-width: 540px;
}

/* ─── BIG SWAP CARD ──────────────────────────────────────── */
.td-swap-card {
  background: var(--card-bg);
  border-radius: var(--r-card);
  padding: clamp(28px, 4vw, 56px);
  margin-bottom: 24px;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

/* decorative gold accent corners */
.td-swap-card::before,
.td-swap-card::after {
  content: '';
  position: absolute;
  width: 80px; height: 80px;
  border: 2px solid var(--gold-soft);
}
.td-swap-card::before {
  top: 16px; left: 16px;
  border-right: 0; border-bottom: 0;
  border-top-left-radius: 16px;
}
.td-swap-card::after {
  bottom: 16px; right: 16px;
  border-left: 0; border-top: 0;
  border-bottom-right-radius: 16px;
}

.td-swap-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 24px;
  align-items: center;
  position: relative;
  z-index: 1;
}
.td-block-be  { order: 1; }
.td-swap-btn  { order: 2; }
.td-block-ce  { order: 3; }
/* Swapped: ค.ศ. ขึ้นซ้าย · พ.ศ. ลงขวา */
.td-swap-grid.is-swapped .td-block-be { order: 3; }
.td-swap-grid.is-swapped .td-block-ce { order: 1; }
.td-swap-grid.is-swapped .td-swap-btn { background: var(--gold); }
@media (max-width: 720px) {
  .td-swap-grid { grid-template-columns: 1fr; gap: 16px; }
  /* บนมือถือ stack แนวตั้ง — swap ก็ยังใช้ order ได้ */
}

.td-year-block {
  text-align: center;
  padding: 24px 12px;
}
.td-year-label {
  font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  font-weight: 700; color: var(--gold); margin: 0 0 6px;
}
.td-year-label-full {
  font-size: 12.5px; color: var(--muted); margin: 0 0 16px;
}
.td-year-input {
  width: 100%; max-width: 280px;
  background: transparent; border: 0;
  font-size: clamp(56px, 10vw, 96px);
  font-weight: 700; color: var(--ink);
  letter-spacing: -.04em; line-height: 1;
  text-align: center;
  outline: none;
  font-variant-numeric: tabular-nums;
  caret-color: var(--gold);
  padding: 0;
}
.td-year-input::-webkit-outer-spin-button,
.td-year-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.td-year-input[type=number] { -moz-appearance: textfield; }
.td-year-input:focus { color: var(--gold-deep); }
.td-year-input::placeholder { color: var(--hairline); }

.td-year-display {
  font-size: clamp(56px, 10vw, 96px);
  font-weight: 700; color: var(--gold);
  letter-spacing: -.04em; line-height: 1;
  margin: 0;
  font-variant-numeric: tabular-nums;
  min-height: 1em;
}

.td-year-meta {
  margin-top: 16px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}
.td-year-meta strong { color: var(--ink); font-weight: 600; }

/* swap button */
.td-swap-btn {
  width: 60px; height: 60px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  border: 0;
  cursor: pointer;
  display: grid; place-items: center;
  transition: transform .3s, background .15s;
  font-size: 24px;
  box-shadow: 0 4px 16px -4px rgba(0,0,0,.3);
  position: relative;
  z-index: 2;
}
.td-swap-btn:hover { transform: rotate(180deg); background: var(--gold); }
@media (max-width: 720px) {
  .td-swap-btn {
    margin: 0 auto;
    transform: rotate(90deg);
  }
  .td-swap-btn:hover { transform: rotate(270deg); }
}

/* ─── PANEL ───────────────────────────────────────────────── */
.td-panel {
  background: var(--card-bg);
  border-radius: var(--r-card);
  padding: clamp(20px, 3vw, 36px);
  margin-bottom: 20px;
  box-shadow: var(--shadow-soft);
}
.td-panel-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 22px; padding: 0 2px; gap: 14px; flex-wrap: wrap;
}
.td-panel-title {
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700; color: var(--ink); margin: 0; letter-spacing: -.01em;
}
.td-panel-sub { font-size: 12.5px; color: var(--muted); margin: 0; }

/* ─── CONTEXT CARDS (4 cards: นักษัตร/ราศี/รัชกาล/ยุค) ──── */
.td-context-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
@media (max-width: 820px) { .td-context-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .td-context-grid { grid-template-columns: 1fr; } }

.td-ctx {
  padding: 22px 24px;
  border-radius: 18px;
  background: var(--card-soft);
  border: 1px solid var(--hairline);
  text-align: center;
}
.td-ctx-icon {
  font-size: 28px; margin-bottom: 10px;
}
.td-ctx-label {
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  font-weight: 700; color: var(--gold); margin: 0 0 8px;
}
.td-ctx-value {
  font-size: 18px; font-weight: 700; color: var(--ink);
  margin: 0 0 4px; letter-spacing: -.005em;
}
.td-ctx-sub {
  font-size: 12px; color: var(--muted); margin: 0;
  line-height: 1.45;
}

/* ─── YEAR REFERENCE TABLE ───────────────────────────────── */
.td-table-wrap { overflow-x: auto; }
.td-table {
  width: 100%; border-collapse: collapse;
  font-size: 13.5px; min-width: 420px;
}
.td-table th, .td-table td {
  padding: 12px 16px; text-align: left;
  border-bottom: 1px solid var(--hairline);
  font-variant-numeric: tabular-nums;
}
.td-table thead th {
  font-size: 11.5px; letter-spacing: .1em;
  text-transform: uppercase; font-weight: 600; color: var(--muted);
  background: var(--card-soft);
}
.td-table td:nth-child(1),
.td-table td:nth-child(2) {
  font-weight: 700; color: var(--ink);
}
.td-table .row-now {
  background: var(--gold-light);
}
.td-table .row-now td { color: var(--gold-deep); }
.td-table .row-now td:first-child::before {
  content: '★ '; color: var(--gold);
}

/* ─── SEO Q&A GRID ───────────────────────────────────────── */
.td-seo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}
.td-seo-card {
  padding: 16px 18px;
  background: var(--card-soft);
  border: 1px solid var(--hairline);
  border-radius: 14px;
  transition: border-color .15s, background .15s, transform .15s;
  cursor: default;
}
.td-seo-card:hover {
  border-color: var(--gold);
  background: var(--gold-light);
  transform: translateY(-1px);
}
.td-seo-q {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.4;
  margin: 0 0 6px;
  font-weight: 500;
}
.td-seo-a {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  letter-spacing: -.005em;
  font-variant-numeric: tabular-nums;
}
.td-seo-card:hover .td-seo-a {
  color: var(--gold-deep);
}

/* ─── ACCORDION ──────────────────────────────────────────── */
.td-acc { display: flex; flex-direction: column; gap: 8px; }
.td-acc details {
  background: var(--card-soft);
  border: 1px solid var(--hairline);
  border-radius: 14px; overflow: hidden;
}
.td-acc details[open] {
  background: var(--card-bg);
  border-color: var(--gold);
}
.td-acc summary {
  padding: 14px 18px; cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; font-size: 14px; font-weight: 600; color: var(--ink);
}
.td-acc summary::-webkit-details-marker { display: none; }
.td-acc summary::after { content: '+'; color: var(--gold); font-size: 18px; font-weight: 400; }
.td-acc details[open] summary::after { content: '−'; }
.td-acc-body {
  padding: 4px 18px 18px;
  font-size: 13.5px; line-height: 1.65; color: var(--text);
}
.td-acc-body p { margin: 0 0 10px; }
.td-acc-body p:last-child { margin: 0; }
.td-acc-body ul { margin: 6px 0 10px 22px; padding: 0; }
.td-acc-body strong { color: var(--ink); }
.td-acc-body em { color: var(--gold-deep); font-style: normal; font-weight: 600; }

/* faq + related */
.td-faq-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 28px; }
@media (max-width: 820px) { .td-faq-grid { grid-template-columns: 1fr; } }
.td-related-title {
  font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  font-weight: 600; color: var(--muted); margin: 0 0 14px;
}
.td-related-list { list-style: none; padding: 0; margin: 0; }
.td-related-list li {
  padding: 12px 0; border-top: 1px solid var(--hairline);
  font-size: 13px; line-height: 1.5; color: var(--muted);
}
.td-related-list li:first-child { border-top: 0; padding-top: 4px; }
.td-related-list a { color: var(--ink); font-weight: 600; text-decoration: none; }
.td-related-list a:hover { color: var(--gold-deep); }