/* ── Poem Oracle ── Dark Luxury Design System ── */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;500;600;700&family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400;1,500;1,600&family=Syne:wght@400;500;600;700&family=IBM+Plex+Mono:wght@300;400;500&display=swap');

/* ── Tokens ── */
:root {
  --bg:            #09080b;
  --bg-2:          #0f0d13;
  --bg-3:          #15121c;
  --surface:       #1a1624;
  --surface-2:     #201b2e;
  --border:        rgba(184,149,44,0.18);
  --border-hover:  rgba(184,149,44,0.42);

  --gold-dim:      rgba(184,149,44,0.10);
  --gold-subtle:   rgba(184,149,44,0.20);
  --gold-mid:      rgba(184,149,44,0.45);
  --gold-strong:   rgba(184,149,44,0.75);
  --gold-full:     #c9a84c;
  --gold-bright:   #e8c96a;
  --gold-deep:     #8a6820;

  --poem-text:     #f0e8d5;
  --poem-text-dim: #c8bfa8;
  --label:         #9a8aaa;
  --muted:         #6b5e7a;
  --white:         #ffffff;

  --font-display:  'Cinzel', serif;
  --font-body:     'Cormorant Garamond', serif;
  --font-ui:       'Syne', sans-serif;
  --font-mono:     'IBM Plex Mono', monospace;

  --radius:        8px;
  --radius-lg:     16px;
  --ease:          cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition:    0.3s var(--ease);
}

[data-theme="light"] {
  --bg:            #f2ede8;
  --bg-2:          #ede7e0;
  --bg-3:          #e8e0d6;
  --surface:       #f0ebe2;
  --surface-2:     #e9e2d8;
  --border:        rgba(138,104,32,0.22);
  --border-hover:  rgba(138,104,32,0.48);

  --gold-dim:      rgba(138,104,32,0.08);
  --gold-subtle:   rgba(138,104,32,0.15);
  --gold-mid:      rgba(138,104,32,0.35);
  --gold-strong:   rgba(138,104,32,0.65);
  --gold-full:     #8a6820;
  --gold-bright:   #6b5010;
  --gold-deep:     #c9a84c;

  --poem-text:     #1a1220;
  --poem-text-dim: #3d3050;
  --label:         #6b5e7a;
  --muted:         #9a8aaa;
  --white:         #09080b;
}

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

html {
  background: var(--bg);
  color: var(--poem-text);
  font-family: var(--font-body);
  font-size: 16px;
  scroll-behavior: smooth;
  transition: background var(--transition), color var(--transition);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Grain Overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.55;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='320' height='320'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='320' height='320' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
}

/* ── Layout ── */
.app-wrapper {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--gold-full);
  text-transform: uppercase;
}

.brand-sub {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  color: var(--label);
  text-transform: uppercase;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* ── Theme Toggle ── */
.theme-toggle {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 7px;
  transition: border-color var(--transition), background var(--transition);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--label);
  text-transform: uppercase;
}

.theme-toggle:hover {
  border-color: var(--border-hover);
  color: var(--gold-full);
}

.theme-toggle .icon { font-size: 0.95rem; }

.app-like-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 6px 13px;
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--label);
  transition: border-color var(--transition), color var(--transition), background var(--transition), transform var(--transition);
}
.app-like-trigger:hover:not(:disabled) {
  color: #c9604c;
  border-color: #c9604c;
  background: var(--surface-2);
  transform: scale(1.05);
}
.app-like-trigger.liked {
  color: var(--gold-full);
  border-color: var(--gold-full);
  background: var(--surface-2);
  cursor: not-allowed;
}
.app-like-trigger:disabled:not(.liked) {
  opacity: 0.6;
  cursor: not-allowed;
}

/* ── Main Content ── */
main {
  padding: 40px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ── Control Panel ── */
.control-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 20px;
}

.panel-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
  min-width: 140px;
}

.panel-label {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--label);
  text-transform: uppercase;
}

.panel-input {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  color: var(--poem-text);
  font-family: var(--font-ui);
  font-size: 0.875rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.panel-input:focus {
  border-color: var(--gold-mid);
  box-shadow: 0 0 0 3px var(--gold-dim);
}

.panel-input::placeholder { color: var(--muted); }

/* Select arrow */
select.panel-input {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%239a8aaa' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 34px;
  cursor: pointer;
}

.panel-divider {
  width: 1px;
  height: 56px;
  background: var(--border);
  align-self: flex-end;
  margin-bottom: 1px;
}

.btn-generate {
  background: linear-gradient(135deg, var(--gold-deep), var(--gold-full));
  border: none;
  border-radius: var(--radius);
  padding: 11px 28px;
  color: var(--bg);
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  white-space: nowrap;
  box-shadow: 0 4px 20px rgba(184,149,44,0.25);
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-generate:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 6px 28px rgba(184,149,44,0.38);
}

.btn-generate:active { transform: translateY(0); opacity: 1; }

.btn-generate.loading { opacity: 0.7; pointer-events: none; }

.spin {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid rgba(9,8,11,0.3);
  border-top-color: var(--bg);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

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

/* ── Poem Stage ── */
.poem-stage {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  min-height: 320px;
  transition: border-color var(--transition);
}

.poem-stage::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold-full), transparent);
  opacity: 0.6;
}

/* ── Poem Header ── */
.poem-header {
  padding: 28px 36px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

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

.poem-title {
  font-family: var(--font-display);
  font-size: 1.55rem;
  font-weight: 600;
  color: var(--gold-bright);
  letter-spacing: 0.06em;
  line-height: 1.2;
}

.poem-author {
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-style: italic;
  color: var(--label);
  letter-spacing: 0.04em;
}

.poem-author span {
  color: var(--gold-mid);
  font-style: normal;
  margin-right: 4px;
}

.poem-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.btn-icon {
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--label);
  font-size: 1rem;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.btn-icon:hover {
  border-color: var(--gold-mid);
  color: var(--gold-full);
  background: var(--gold-dim);
}

.btn-copy.copied {
  color: #6ee7a0;
  border-color: rgba(110,231,160,0.4);
}

/* ── Poem Body ── */
.poem-body {
  padding: 32px 36px 36px;
}

.poem-lines {
  font-family: var(--font-body);
  font-size: 1.22rem;
  font-weight: 400;
  line-height: 2.0;
  color: var(--poem-text);
  white-space: pre-wrap;
  word-break: break-word;
  letter-spacing: 0.01em;
}

.poem-stanza {
  margin-bottom: 1.6em;
}

.poem-stanza:last-child { margin-bottom: 0; }

/* ── Stats Bar ── */
.poem-stats {
  padding: 14px 36px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 24px;
  background: var(--bg-2);
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.stat-label {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--gold-strong);
}

/* ── Skeleton Loader ── */
.skeleton-wrap {
  padding: 32px 36px;
}

.skeleton-line {
  height: 20px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--bg-3) 25%, var(--surface-2) 50%, var(--bg-3) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  margin-bottom: 14px;
}

@keyframes shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Empty / Error States ── */
.state-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 36px;
  gap: 12px;
  text-align: center;
}

.state-icon {
  font-size: 2.5rem;
  opacity: 0.4;
}

.state-title {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.12em;
  color: var(--label);
}

.state-desc {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--muted);
  max-width: 320px;
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--surface-2);
  border: 1px solid var(--border-hover);
  border-radius: 50px;
  padding: 10px 22px;
  font-family: var(--font-ui);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gold-full);
  z-index: 1000;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease);
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Footer ── */
footer {
  padding: 20px 0 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.footer-text {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.footer-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold-deep);
  display: inline-block;
  margin: 0 8px;
  vertical-align: middle;
}

/* ── Ornament Divider ── */
.ornament {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--gold-deep);
  font-size: 0.75rem;
}

.ornament::before,
.ornament::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--gold-deep));
}

.ornament::after {
  background: linear-gradient(to left, transparent, var(--gold-deep));
}

/* ── Responsive ── */
@media (max-width: 680px) {
  .app-wrapper { padding: 0 16px; }

  .brand-name { font-size: 1.1rem; }

  .control-panel {
    padding: 20px 16px;
    flex-direction: column;
  }

  .panel-divider { display: none; }
  .panel-group { min-width: unset; width: 100%; }
  .btn-generate { width: 100%; justify-content: center; }

  .poem-header {
    padding: 20px 20px 16px;
    flex-direction: column;
    gap: 14px;
  }

  .poem-title { font-size: 1.2rem; }

  .poem-body { padding: 24px 20px 28px; }
  .poem-lines { font-size: 1.08rem; line-height: 1.9; }
  .poem-stats { padding: 12px 20px; flex-wrap: wrap; gap: 14px; }
}

/* ── Fade-in Animation ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-up { animation: fadeUp 0.5s var(--ease) both; }