/* ══════════════════════════════════════════════
   天机问道 · 八字命格 — Soft Cartoon Theme
   Palette: Macaron (cream yellow / mint / lavender / blush pink)
   ══════════════════════════════════════════════ */

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

:root {
  /* ── Macaron colour tokens ── */
  --bg:               #fdf6e3;
  --card:             #fffcf7;

  --yellow:           #f5d76e;
  --yellow-light:     #fef7d6;
  --yellow-dark:      #c9a020;
  --yellow-shadow:    rgba(245, 215, 110, 0.38);

  --mint:             #6dccaa;
  --mint-light:       #d2f5e8;
  --mint-dark:        #3a9c78;
  --mint-shadow:      rgba(109, 204, 170, 0.38);

  --lavender:         #b89ee0;
  --lavender-light:   #ede4fa;
  --lavender-dark:    #8060c0;
  --lavender-shadow:  rgba(184, 158, 224, 0.38);

  --pink:             #f0a0c0;
  --pink-light:       #fde4ef;
  --pink-dark:        #c06090;
  --pink-shadow:      rgba(240, 160, 192, 0.38);

  --peach:            #f9c09a;
  --peach-light:      #feeedd;

  /* ── Text ── */
  --text:             #3d3550;
  --text-muted:       #9b90ae;
  --text-light:       #c8c0d8;

  /* ── Structural ── */
  --border:           rgba(184, 158, 224, 0.28);
  --radius-sm:        10px;
  --radius:           18px;
  --radius-lg:        26px;
  --radius-pill:      100px;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Serif SC", "SimSun", serif;
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse at 15% 85%, rgba(184, 158, 224, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 15%, rgba(109, 204, 170, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(245, 215, 110, 0.05) 0%, transparent 60%);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Bubble canvas ── */
#bubbles {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
}

/* ── Layout ── */
.wrap {
  position: relative; z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  padding: 0 18px 80px;
}

/* ═══════════════ HEADER ═══════════════ */
header {
  text-align: center;
  padding: 60px 0 40px;
}

.logo {
  display: inline-flex; align-items: center; gap: 16px;
  margin-bottom: 18px;
}

.logo-icon {
  width: 64px; height: 64px;
  background: linear-gradient(135deg, var(--lavender-light), var(--lavender));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 30px;
  box-shadow: 0 8px 28px var(--lavender-shadow);
  animation: floatLogo 4s ease-in-out infinite;
}

@keyframes floatLogo {
  0%, 100% { transform: translateY(0);   box-shadow: 0 8px 28px var(--lavender-shadow); }
  50%       { transform: translateY(-7px); box-shadow: 0 16px 36px var(--lavender-shadow); }
}

header h1 {
  font-size: clamp(28px, 6vw, 46px);
  letter-spacing: .2em;
  background: linear-gradient(135deg, var(--lavender-dark), var(--lavender), var(--pink));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

header p {
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 15px;
  letter-spacing: .08em;
}

.divider {
  display: flex; align-items: center; gap: 12px;
  margin: 26px 0;
}
.divider::before, .divider::after {
  content: ''; flex: 1; height: 2px;
  background: linear-gradient(90deg, transparent, var(--lavender-light), transparent);
}
.divider span { font-size: 18px; color: var(--lavender); }

/* ═══════════════ CARD ═══════════════ */
.card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  margin-bottom: 18px;
  box-shadow:
    0 4px 20px rgba(184, 158, 224, 0.12),
    0 1px 6px  rgba(184, 158, 224, 0.08);
}

.card-title {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--text);
  display: flex; align-items: center; gap: 8px;
}

.card-title-dot {
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lavender), var(--pink));
  flex-shrink: 0;
}

/* ═══════════════ COLLAPSIBLE API PANEL ═══════════════ */
.collapsible-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  transition: opacity .2s;
  border-radius: var(--radius-sm);
  padding: 2px;
  margin: -2px;
}
.collapsible-header:hover { opacity: .78; }
.collapsible-header:focus-visible {
  outline: 3px solid var(--lavender-light);
  outline-offset: 2px;
}

.chevron {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px;
  background: var(--lavender-light);
  border-radius: 50%;
  font-size: 13px;
  color: var(--lavender-dark);
  transition: transform .38s cubic-bezier(.4, 0, .2, 1),
              background .25s, color .25s;
  flex-shrink: 0;
}
.collapsible-header.open .chevron {
  transform: rotate(180deg);
  background: var(--lavender);
  color: white;
}

/* Grid-based height animation — no jumpiness */
.collapsible-grid {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .42s cubic-bezier(.4, 0, .2, 1);
}
.collapsible-grid.open {
  grid-template-rows: 1fr;
}
.collapsible-body {
  overflow: hidden;
}
.collapsible-body-inner {
  padding-top: 20px;
  opacity: 0;
  transition: opacity .3s ease .05s;
}
.collapsible-grid.open .collapsible-body-inner {
  opacity: 1;
}

/* ═══════════════ MODE TABS ═══════════════ */
.mode-tabs {
  display: flex;
  background: var(--lavender-light);
  border-radius: var(--radius-pill);
  padding: 4px;
  margin-bottom: 20px;
  gap: 3px;
}

.tab-btn {
  flex: 1;
  padding: 8px 10px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  letter-spacing: .04em;
  border-radius: var(--radius-pill);
  transition: all .22s ease;
}
.tab-btn.active {
  background: white;
  color: var(--text);
  font-weight: 700;
  box-shadow: 0 2px 10px var(--lavender-shadow);
}

/* ═══════════════ FORM ═══════════════ */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
.form-row.full { grid-template-columns: 1fr; }
@media (max-width: 540px) { .form-row { grid-template-columns: 1fr; } }

.field { display: flex; flex-direction: column; gap: 6px; }

.field label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: .06em;
}

.field input, .field select, .field textarea {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 14px;
  transition: border-color .2s, box-shadow .2s;
  outline: none;
  width: 100%;
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--mint);
  box-shadow: 0 0 0 4px var(--mint-light);
}
.field textarea {
  resize: vertical; min-height: 88px; line-height: 1.65;
  border-radius: var(--radius-sm);
}
.field select option { background: white; color: var(--text); }
.field input[type="date"]::-webkit-calendar-picker-indicator {
  filter: hue-rotate(180deg) saturate(.8) opacity(.55);
  cursor: pointer;
}

/* ── API row ── */
.api-row {
  display: flex; gap: 10px; align-items: flex-end;
}
.api-row .field { flex: 1; }

.btn-sm {
  padding: 10px 16px;
  background: var(--lavender-light);
  border: 1.5px solid var(--lavender);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
}
.btn-sm:hover {
  background: var(--lavender);
  color: white;
  box-shadow: 0 4px 14px var(--lavender-shadow);
}

/* ── Provider hint link ── */
#providerHint a {
  color: var(--lavender-dark);
  text-decoration: none;
  font-weight: 600;
}
#providerHint a:hover { color: var(--pink-dark); }

/* ═══════════════ TAGS ═══════════════ */
.tag {
  padding: 6px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-pill);
  background: white;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: all .2s;
  letter-spacing: .03em;
}
.tag.active {
  background: var(--mint-light);
  border-color: var(--mint);
  color: var(--mint-dark);
  font-weight: 700;
  box-shadow: 0 2px 10px var(--mint-shadow);
}
.tag:hover:not(.active) {
  border-color: var(--lavender);
  background: var(--lavender-light);
  color: var(--text);
}

/* ═══════════════ SUBMIT BUTTON ═══════════════ */
.btn-submit {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, var(--lavender), var(--pink));
  border: none;
  border-radius: var(--radius-pill);
  color: white;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .18em;
  cursor: pointer;
  transition: transform .15s, box-shadow .3s;
  box-shadow: 0 6px 28px var(--lavender-shadow);
}
.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px var(--lavender-shadow);
}
.btn-submit:active { transform: translateY(0); }
.btn-submit:disabled {
  opacity: .55; cursor: not-allowed; transform: none;
}

/* ═══════════════ LOADING ═══════════════ */
.loading {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 44px 0;
  text-align: center;
}
.loading.show { display: flex; }

.dot-spinner { display: flex; gap: 9px; align-items: center; }
.dot {
  width: 13px; height: 13px;
  border-radius: 50%;
  animation: dotBounce 1.3s ease-in-out infinite;
}
.dot:nth-child(1) { background: var(--mint);     animation-delay: 0s; }
.dot:nth-child(2) { background: var(--lavender);  animation-delay: .2s; }
.dot:nth-child(3) { background: var(--pink);      animation-delay: .4s; }

@keyframes dotBounce {
  0%, 80%, 100% { transform: scale(1);   opacity: .65; }
  40%            { transform: scale(1.4); opacity: 1; }
}

.loading-text {
  color: var(--text-muted);
  font-size: 14px;
  letter-spacing: .06em;
}

/* ═══════════════ PILLAR DISPLAY ═══════════════ */
.pillars {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin: 20px 0;
}
.pillar {
  display: flex; flex-direction: column;
  align-items: center; gap: 6px;
  flex: 1; max-width: 120px;
}
.pillar-label {
  font-size: 11px; color: var(--text-muted);
  letter-spacing: .1em;
}
.pillar-char {
  width: 52px; height: 52px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  transition: all .3s;
}
.pillar-char.stem {
  background: var(--yellow-light);
  color: var(--yellow-dark);
  box-shadow: 0 3px 12px var(--yellow-shadow);
}
.pillar-char.branch {
  background: var(--lavender-light);
  color: var(--lavender-dark);
  box-shadow: 0 3px 12px var(--lavender-shadow);
}
.pillar-sep { width: 1px; height: 8px; background: var(--border); }

/* ═══════════════ ERROR BOX ═══════════════ */
.error-box {
  display: none;
  background: var(--pink-light);
  border: 1.5px solid var(--pink);
  border-radius: var(--radius);
  padding: 13px 16px;
  color: var(--pink-dark);
  font-size: 14px;
  margin-top: 14px;
}
.error-box.show { display: block; }

/* ═══════════════ RESULT ═══════════════ */
#result { display: none; }
#result.show { display: block; }

.result-header {
  display: flex; align-items: center; gap: 14px;
  margin-bottom: 22px;
}
.result-icon {
  width: 50px; height: 50px;
  background: linear-gradient(135deg, var(--mint-light), var(--mint));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: 0 4px 18px var(--mint-shadow);
}
.result-title {
  font-size: 18px; color: var(--text);
  letter-spacing: .08em; font-weight: 700;
}
.result-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* ═══════════════ MARKDOWN RENDER ═══════════════ */
.result-body {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
  white-space: pre-wrap;
  word-break: break-word;
}

.md h1 { font-size: 20px; color: var(--text); margin: 24px 0 10px; }
.md h2 {
  font-size: 16px; color: var(--text); margin: 22px 0 8px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--lavender-light);
}
.md h3 { font-size: 15px; color: var(--lavender-dark); margin: 16px 0 6px; }
.md p  { margin: 8px 0; }
.md ul, .md ol { margin: 8px 0 8px 22px; }
.md li { margin: 4px 0; }
.md strong { color: var(--lavender-dark); font-weight: 700; }
.md em { color: var(--text-muted); font-style: normal; }
.md blockquote {
  border-left: 4px solid var(--lavender);
  padding: 8px 16px;
  margin: 12px 0;
  background: var(--lavender-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-muted);
}
.md hr {
  border: none;
  border-top: 2px dashed var(--lavender-light);
  margin: 20px 0;
}
.md table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0;
  font-size: 14px;
}
.md th, .md td {
  border: 1px solid var(--lavender-light);
  padding: 8px 12px;
  text-align: left;
}
.md thead tr {
  background: var(--lavender-light);
  color: var(--lavender-dark);
  font-weight: 700;
}
.md tbody tr:nth-child(even) {
  background: rgba(184, 158, 224, 0.06);
}
.md code {
  background: var(--mint-light);
  color: var(--mint-dark);
  padding: 2px 7px;
  border-radius: 8px;
  font-size: 13px;
}
.md pre code {
  display: block; padding: 14px;
  overflow-x: auto; margin: 10px 0;
  border-radius: var(--radius-sm);
}

/* ═══════════════ FOOTER ═══════════════ */
footer {
  text-align: center;
  padding-top: 30px;
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: .06em;
  border-top: 2px dashed var(--lavender-light);
}
footer a { color: var(--lavender); text-decoration: none; }
footer a:hover { color: var(--pink-dark); }