/* ==========================================================================
   Recipe Engine — orient-luxury design system + component styles
   Dark luxury aesthetic: near-black background with grain overlay, gold
   accents, Cinzel/Cormorant Garamond/Syne/IBM Plex Mono type stack.
   Dark mode is default; light/parchment mode toggled via [data-theme].
   ========================================================================== */

:root {
  --ol-bg: #09080b;
  --ol-bg-elevated: #131116;
  --ol-bg-card: #17151b;
  --ol-border: rgba(201, 168, 76, 0.18);
  --ol-border-strong: rgba(201, 168, 76, 0.35);
  --ol-text: #ece7db;
  --ol-text-dim: #a89f8f;
  --ol-text-faint: #6e6759;
  --ol-gold: #c9a84c;
  --ol-gold-dim: rgba(201, 168, 76, 0.55);
  --ol-gold-bg: rgba(201, 168, 76, 0.1);
  --ol-danger: #c9604c;
  --ol-success: #7fae6c;
  --ol-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --ol-radius: 10px;
  --ol-font-display: 'Cinzel', serif;
  --ol-font-body: 'Cormorant Garamond', serif;
  --ol-font-ui: 'Syne', sans-serif;
  --ol-font-mono: 'IBM Plex Mono', monospace;
}

html[data-theme="light"] {
  --ol-bg: #f0ebe0;
  --ol-bg-elevated: #e8e1d2;
  --ol-bg-card: #ffffff;
  --ol-border: rgba(138, 104, 32, 0.22);
  --ol-border-strong: rgba(138, 104, 32, 0.4);
  --ol-text: #2a2418;
  --ol-text-dim: #5c5340;
  --ol-text-faint: #8a8065;
  --ol-gold: #8a6820;
  --ol-gold-dim: rgba(138, 104, 32, 0.55);
  --ol-gold-bg: rgba(138, 104, 32, 0.08);
  --ol-shadow: 0 12px 28px rgba(90, 72, 30, 0.15);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--ol-bg);
  color: var(--ol-text);
  font-family: var(--ol-font-body);
  font-size: 18px;
  line-height: 1.5;
  min-height: 100%;
  transition: background 0.25s ease, color 0.25s ease;
}

/* Grain texture overlay */
.ol-grain {
  position: fixed;
  inset: 0;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  z-index: 999;
  opacity: 0.5;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

h1, h2, h3, h4, .brand h1, .btn, .tab-btn {
  font-family: var(--ol-font-display);
  letter-spacing: 0.02em;
}

/* ==========================================================================
   Header
   ========================================================================== */

.app-header {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 32px;
  border-bottom: 1px solid var(--ol-border);
  background: linear-gradient(180deg, var(--ol-bg-elevated), var(--ol-bg));
  position: sticky;
  top: 0;
  z-index: 20;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--ol-border-strong);
  border-radius: 50%;
  color: var(--ol-gold);
  font-family: var(--ol-font-mono);
  font-size: 14px;
  letter-spacing: 0.05em;
}

.brand h1 {
  font-size: 22px;
  margin: 0;
  color: var(--ol-text);
  font-weight: 600;
}

.app-like-trigger {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  border-radius: 20px;
  padding: 2px 10px;
  font-family: var(--ol-font-ui);
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--ol-text-dim);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.app-like-trigger:hover:not(:disabled) {
  color: var(--ol-danger);
  border-color: var(--ol-danger);
  background: var(--ol-gold-bg);
  transform: scale(1.05);
}

.app-like-trigger.liked {
  color: var(--ol-gold);
  border-color: var(--ol-gold);
  background: var(--ol-gold-bg);
  cursor: not-allowed;
}

.app-like-trigger:disabled:not(.liked) {
  opacity: 0.6;
  cursor: not-allowed;
}

.tabs {
  display: flex;
  gap: 4px;
  margin-left: auto;
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  border-radius: 999px;
  padding: 4px;
}

.tab-btn {
  border: none;
  background: transparent;
  color: var(--ol-text-dim);
  padding: 9px 20px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

.tab-btn.is-active {
  background: var(--ol-gold-bg);
  color: var(--ol-gold);
}

.tab-btn .badge {
  display: inline-block;
  min-width: 18px;
  padding: 0 5px;
  margin-left: 6px;
  border-radius: 999px;
  background: var(--ol-gold);
  color: var(--ol-bg);
  font-family: var(--ol-font-mono);
  font-size: 11px;
  line-height: 18px;
}

.theme-toggle {
  border: 1px solid var(--ol-border);
  background: var(--ol-bg-elevated);
  color: var(--ol-gold);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.2s ease;
}
.theme-toggle:hover { border-color: var(--ol-border-strong); }

/* ==========================================================================
   Layout
   ========================================================================== */

main { max-width: 980px; margin: 0 auto; padding: 32px 24px 80px; }

.tab-panel { display: none; }
.tab-panel.is-active { display: block; }

/* ==========================================================================
   Filter form
   ========================================================================== */

.filter-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px 18px;
  padding: 22px;
  background: var(--ol-bg-card);
  border: 1px solid var(--ol-border);
  border-radius: var(--ol-radius);
  box-shadow: var(--ol-shadow);
  margin-bottom: 20px;
}

.field { display: flex; flex-direction: column; gap: 6px; }
.field-query { grid-column: 1 / -1; }
.field-intolerances { grid-column: 1 / -1; border: none; margin: 0; padding: 0; }
.field-actions {
  grid-column: 1 / -1;
  flex-direction: row;
  gap: 12px;
  margin-top: 4px;
}

label, legend {
  font-family: var(--ol-font-ui);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ol-text-dim);
}

input[type="text"], input[type="number"], select {
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  border-radius: 6px;
  color: var(--ol-text);
  padding: 10px 12px;
  font-family: var(--ol-font-body);
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s ease;
}
input[type="text"]:focus, input[type="number"]:focus, select:focus {
  border-color: var(--ol-gold-dim);
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px 14px;
  margin-top: 4px;
}
.checkbox-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  font-family: var(--ol-font-body);
  font-size: 15px;
  color: var(--ol-text);
  letter-spacing: normal;
}
.checkbox-grid input { accent-color: var(--ol-gold); }

.btn {
  border: 1px solid var(--ol-border-strong);
  background: var(--ol-gold);
  color: var(--ol-bg);
  padding: 11px 22px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-ghost {
  background: transparent;
  color: var(--ol-gold);
  border: 1px solid var(--ol-border);
}

.btn-small { padding: 7px 14px; font-size: 12px; }

/* ==========================================================================
   Status / empty states
   ========================================================================== */

.status-line {
  font-family: var(--ol-font-mono);
  font-size: 13px;
  color: var(--ol-text-dim);
  min-height: 18px;
  margin-bottom: 14px;
}
.status-line.is-error { color: var(--ol-danger); }

.empty-state {
  padding: 40px 20px;
  text-align: center;
  color: var(--ol-text-dim);
  font-family: var(--ol-font-body);
  font-size: 18px;
  border: 1px dashed var(--ol-border);
  border-radius: var(--ol-radius);
}

/* ==========================================================================
   Recipe row cards
   ========================================================================== */

.recipe-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.recipe-card {
  background: var(--ol-bg-card);
  border: 1px solid var(--ol-border);
  border-radius: var(--ol-radius);
  overflow: hidden;
  box-shadow: var(--ol-shadow);
}

.recipe-card-thumb-btn {
  border: none;
  background: none;
  padding: 0;
  display: block;
  cursor: pointer;
  width: 100%;
}

.recipe-card-body {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
}

.recipe-card-thumb-btn {
  width: 96px;
  height: 96px;
  flex-shrink: 0;
  border-radius: 8px;
  overflow: hidden;
  margin-left: 18px;
  margin-top: 14px;
}
.recipe-card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: var(--ol-bg-elevated);
}

.recipe-card-body {
  flex: 1;
  min-width: 0;
}

.recipe-card-title {
  margin: 0 0 6px;
  font-size: 20px;
  color: var(--ol-text);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.recipe-card-nutrients {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 10px;
}

.nutrient-chip {
  font-family: var(--ol-font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--ol-text-dim);
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  border-radius: 999px;
  padding: 3px 10px;
  white-space: nowrap;
}
.nutrient-chip .nutrient-value { color: var(--ol-gold); }

.recipe-card-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-bookmark {
  margin-left: auto;
  border: 1px solid var(--ol-border);
  background: transparent;
  color: var(--ol-text-dim);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.btn-bookmark[aria-pressed="true"] {
  color: var(--ol-gold);
  border-color: var(--ol-border-strong);
}

/* ==========================================================================
   Expanded detail
   ========================================================================== */

.recipe-card-detail {
  border-top: 1px solid var(--ol-border);
  padding: 20px;
  background: var(--ol-bg-elevated);
}

.recipe-detail-loading, .recipe-detail-error {
  font-family: var(--ol-font-mono);
  font-size: 13px;
  color: var(--ol-text-dim);
}
.recipe-detail-error { color: var(--ol-danger); }

.recipe-hero {
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 18px;
  background: #000;
  text-align: center;
}
.recipe-hero-image {
  width: 100%;
  max-height: 460px;
  object-fit: contain;
  display: block;
  margin: 0 auto;
  background: #000;
}

.recipe-detail-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  margin-bottom: 20px;
}
@media (max-width: 640px) {
  .recipe-detail-grid { grid-template-columns: 1fr; }
}

.recipe-detail-facts {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-family: var(--ol-font-mono);
  font-size: 13px;
  color: var(--ol-text-dim);
}
.recipe-detail-facts .fact-label { color: var(--ol-text-faint); text-transform: uppercase; font-size: 11px; letter-spacing: 0.06em; }
.recipe-detail-facts .fact-value { color: var(--ol-gold); }

.recipe-detail-summary h4,
.recipe-detail-ingredients h4,
.recipe-detail-instructions h4 {
  font-size: 15px;
  color: var(--ol-gold);
  margin: 0 0 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-family: var(--ol-font-ui);
}

.recipe-detail-summary p {
  margin: 0;
  color: var(--ol-text);
  line-height: 1.6;
}

.recipe-detail-ingredients { margin-bottom: 20px; }
.recipe-detail-ingredients ul {
  margin: 0;
  padding-left: 20px;
  columns: 2;
  column-gap: 24px;
}
.recipe-detail-ingredients li { margin-bottom: 6px; color: var(--ol-text); }

.recipe-detail-instructions ol {
  margin: 0;
  padding-left: 22px;
}
.recipe-detail-instructions li {
  margin-bottom: 12px;
  color: var(--ol-text);
  line-height: 1.6;
}
.recipe-detail-empty { color: var(--ol-text-faint); font-style: italic; }

/* ==========================================================================
   Pager
   ========================================================================== */

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-top: 20px;
}
/* The [hidden] attribute must win over the .pager display:flex rule above,
   otherwise the Previous/Next controls stay visible (and clickable) before
   any search has been run. */
.pager[hidden] {
  display: none;
}
.pager-label {
  font-family: var(--ol-font-mono);
  font-size: 13px;
  color: var(--ol-text-dim);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.app-footer {
  text-align: center;
  padding: 18px;
  border-top: 1px solid var(--ol-border);
  color: var(--ol-text-faint);
  font-family: var(--ol-font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
}
.api-usage { color: var(--ol-text-faint); }
.api-usage.is-low { color: var(--ol-danger); }