/* Apple-inspired design system */
:root {
  --bg: #F5F5F7;
  --text: #1D1D1F;
  --muted: #6E6E73;
  --accent: #0A84FF;
  --accent-2: #64D2FF;
  --surface: #FFFFFF;
  --surface-2: rgba(255, 255, 255, 0.72);
  --border: rgba(0, 0, 0, 0.12);
  --radius: 14px;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-2: 0 10px 30px rgba(0,0,0,0.12);
  --transition: 200ms ease;
  --font-scale: 1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1C1C1E;
    --text: #F5F5F7;
    --muted: #A1A1A6;
    --accent: #0A84FF;
    --accent-2: #64D2FF;
    --surface: #2C2C2E;
    --surface-2: rgba(44,44,46,0.72);
    --border: rgba(255, 255, 255, 0.14);
    --shadow-1: 0 1px 2px rgba(0,0,0,0.6);
    --shadow-2: 0 10px 30px rgba(0,0,0,0.5);
  }
}

/* Manual theme overrides */
[data-theme="light"] {
  --bg: #F5F5F7;
  --text: #1D1D1F;
  --muted: #6E6E73;
  --accent: #0A84FF;
  --accent-2: #64D2FF;
  --surface: #FFFFFF;
  --surface-2: rgba(255, 255, 255, 0.72);
  --border: rgba(0, 0, 0, 0.12);
  --shadow-1: 0 1px 2px rgba(0,0,0,0.06);
  --shadow-2: 0 10px 30px rgba(0,0,0,0.12);
}
[data-theme="dark"] {
  --bg: #1C1C1E;
  --text: #F5F5F7;
  --muted: #A1A1A6;
  --accent: #0A84FF;
  --accent-2: #64D2FF;
  --surface: #2C2C2E;
  --surface-2: rgba(44,44,46,0.72);
  --border: rgba(255, 255, 255, 0.14);
  --shadow-1: 0 1px 2px rgba(0,0,0,0.6);
  --shadow-2: 0 10px 30px rgba(0,0,0,0.5);
}

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

body {
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 20px;
  font-size: calc(16px * var(--font-scale));
  line-height: 1.5;
  font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

.container { max-width: 1200px; margin: 0 auto; }

h1 {
  color: var(--text);
  margin-bottom: 8px;
  font-weight: 700;
  font-size: 2.2rem;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--muted);
  margin-bottom: 24px;
  font-size: 0.98rem;
}

/* Header and top-right toolbar */
.header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.topbar { display: flex; align-items: center; }
.toolbar { display: flex; gap: 10px; }

.controls {
  background: var(--surface-2);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  padding: 20px;
  border-radius: var(--radius);
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-2);
}

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

label { color: var(--muted); font-size: 0.85rem; font-weight: 600; }

select, input {
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

select:focus, input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(10,132,255,0.2);
}

input[type="text"] { width: 260px; }

.stats {
  padding: 12px 16px;
  background: var(--surface-2);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  backdrop-filter: blur(16px) saturate(180%);
  border-radius: 12px;
  border: 1px solid var(--border);
  color: var(--muted);
  font-weight: 500;
  margin-bottom: 20px;
  box-shadow: var(--shadow-1);
}

.recipe-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; margin-bottom: 24px; }

.recipe-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.recipe-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.recipe-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-2); border-color: rgba(10,132,255,0.35); }

.recipe-header { margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.recipe-title { color: var(--text); font-weight: 700; font-size: 1.05rem; line-height: 1.3; }
.recipe-date { color: var(--muted); font-size: 0.9rem; margin-top: 4px; }
.recipe-author { color: var(--muted); margin-top: 4px; }

.recipe-genre {
  display: inline-block; padding: 4px 10px; background: rgba(10,132,255,0.1);
  border: 1px solid rgba(10,132,255,0.2); border-radius: 999px; font-size: 0.82rem; margin-top: 8px; color: var(--text);
}

.recipe-ingredients { margin-top: 12px; }
.ingredient { display: inline-block; padding: 4px 8px; margin: 2px; background: rgba(0,0,0,0.06); border-radius: 999px; font-size: 0.82rem; color: var(--text); }

.process-summary { margin-top: 10px; color: var(--muted); font-size: 0.92rem; }
.muted { color: var(--muted); }
.mt-8 { margin-top: 8px; }

.modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.45); z-index: 1000; overflow-y: auto; }
.modal-content {
  background: var(--surface-2);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  backdrop-filter: blur(20px) saturate(180%);
  margin: 50px auto; padding: 24px; max-width: 1100px; border-radius: 18px;
  border: 1px solid var(--border); position: relative; box-shadow: var(--shadow-2);
}
.close-btn { position: absolute; top: 12px; right: 16px; font-size: 28px; color: var(--muted); cursor: pointer; transition: transform 0.2s; }
.close-btn:hover { transform: rotate(90deg); }
.modal h2 { color: var(--text); margin-bottom: 14px; font-size: 1.4rem; }

.detail-section { margin: 18px 0; padding: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.detail-section h3 { color: var(--text); margin-bottom: 8px; font-size: 1.06rem; }
.detail-subsection { margin: 10px 0; padding: 10px; background: rgba(0,0,0,0.04); border-radius: 10px; }
.detail-subsection h4 { color: var(--muted); margin-bottom: 6px; font-size: 0.96rem; }

.process-step { margin: 10px 0; padding: 10px; background: rgba(0,0,0,0.04); border-left: 3px solid rgba(10,132,255,0.35); }
.step-number { color: var(--accent); font-weight: 700; }

.confidence-meter { margin-top: 10px; height: 20px; background: rgba(0,0,0,0.08); border-radius: 12px; overflow: hidden; position: relative; }
.confidence-fill { height: 100%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.5s ease; }
.confidence-label { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-size: 12px; color: var(--text); text-shadow: none; }

.language-badge { display: inline-block; padding: 4px 10px; background: rgba(0,0,0,0.06); border-radius: 999px; margin-left: 8px; font-size: 0.9rem; color: var(--text); }

.no-results { text-align: center; padding: 40px; color: var(--muted); font-style: italic; }
.full-text { max-height: 300px; overflow-y: auto; padding: 10px; background: rgba(0,0,0,0.04); border-radius: 8px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.9rem; line-height: 1.5; }
.translation { background: rgba(0,0,0,0.04); padding: 10px; border-radius: 8px; border-left: 3px solid rgba(10,132,255,0.35); font-style: normal; }
.ingredient-detail { display: flex; justify-content: space-between; align-items: center; padding: 6px 10px; margin: 6px 0; background: rgba(0,0,0,0.04); border-radius: 8px; }
.ingredient-name { font-weight: 700; }
.ingredient-phrasing { font-style: italic; color: var(--muted); }

.collapsible { cursor: pointer; padding: 5px 0; border-bottom: 1px solid var(--border); color: var(--text); }
.collapsible:hover { color: var(--accent); }
.collapsible-content { max-height: 0; overflow: hidden; padding: 0 0; transition: max-height var(--transition); }
.collapsible.active + .collapsible-content { max-height: 2000px; padding: 10px 0; }

/* Buttons and icons */
.btn { background: var(--surface); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: 8px 10px; display: inline-flex; align-items: center; gap: 8px; cursor: pointer; box-shadow: var(--shadow-1); }
.btn:hover { border-color: rgba(10,132,255,0.35); }
.btn-icon { width: 18px; height: 18px; fill: currentColor; }
.toolbar { display: flex; gap: 10px; }

.nav-btn {
  text-decoration: none;
  font-weight: 500;
}

.nav-btn:hover {
  text-decoration: none;
}

.reset-btn {
  width: 100%;
  padding: 12px 16px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-1);
  font-family: inherit;
}

.reset-btn:hover {
  border-color: var(--accent);
  background: rgba(10,132,255,0.05);
  transform: translateY(-1px);
  box-shadow: var(--shadow-2);
}

.reset-btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-1);
}

.reset-btn svg {
  transition: transform 0.2s ease;
}

.reset-btn:hover svg {
  transform: rotate(-45deg);
}

/* Skeleton loader */
.skeleton-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow-1); }
.skeleton-line { height: 12px; background: linear-gradient(90deg, rgba(0,0,0,0.06), rgba(0,0,0,0.12), rgba(0,0,0,0.06)); background-size: 300% 100%; animation: glow 1.2s ease-in-out infinite; border-radius: 8px; }
.skeleton-line.sm { height: 10px; width: 60%; }
.skeleton-line.md { height: 12px; width: 80%; margin-top: 8px; }
.skeleton-line.lg { height: 14px; width: 100%; margin-top: 8px; }
@keyframes glow { 0% { background-position: 0% 0; } 100% { background-position: 100% 0; } }

/* Removed viewport arrows */

/* Collapsible filter sections */
.filter-section {
  margin-bottom: 12px;
}

.filter-toggle {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-height: 40px;
}

.filter-toggle:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(10,132,255,0.1);
}

.filter-toggle-text {
  font-weight: 600;
  color: var(--text);
}

.filter-count {
  font-size: 12px;
  color: var(--muted);
  margin-left: 8px;
}

.filter-arrow {
  transition: transform 0.2s ease;
  font-size: 12px;
  color: var(--muted);
}

.filter-toggle.expanded .filter-arrow {
  transform: rotate(180deg);
}

.filter-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 10px 10px;
}

.filter-content.expanded {
  max-height: 300px;
  padding: 12px;
  overflow-y: auto;
}

.filter-content .checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 100%;
}

.filter-content .checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  background: transparent;
  /* Keep padding constant to avoid layout shift on hover/touch */
  padding: 6px 8px;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.2s ease;
}

.filter-content .checkbox-item:last-child {
  border-bottom: none;
}

.filter-content .checkbox-item:hover {
  background: rgba(10,132,255,0.05);
  border-radius: 6px;
}

.filter-content .checkbox-item input[type="checkbox"] {
  margin: 0;
  accent-color: var(--accent);
}

/* Legacy checkbox lists - keeping for compatibility */
.checkbox-list { display: flex; flex-wrap: wrap; gap: 8px 14px; max-width: 520px; }
.checkbox-item { display: inline-flex; align-items: center; gap: 6px; font-size: 0.92rem; color: var(--text); background: var(--surface); padding: 6px 10px; border-radius: 999px; border: 1px solid var(--border); }
.checkbox-item input { margin: 0; }

/* Layout: left sidebar filters, main content */
.layout { display: flex; gap: 20px; align-items: flex-start; }
.sidebar {
  flex: 0 0 320px;
  max-width: 360px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.sidebar::-webkit-scrollbar {
  width: 6px;
}
.sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--muted);
}
.sidebar .controls { flex-direction: column; align-items: stretch; }
.sidebar .control-group { width: 100%; margin-bottom: 16px; }
.sidebar .checkbox-list { max-width: 100%; }
.main { flex: 1; min-width: 0; }

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Enhanced responsive design */
@media (max-width: 1024px) {
  .container { padding: 0 16px; }
  .layout { gap: 16px; }
}

@media (max-width: 900px) {
  body { padding: 16px; }
  .layout { flex-direction: column; }
  .sidebar {
    position: static;
    width: 100%;
    max-width: none;
    max-height: none;
    order: 2;
  }
  .main { order: 1; }
  .recipe-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
}

/* Witness ID Footer */
.witness-id-footer {
  font-size: 0.65rem;
  color: var(--muted);
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid rgba(0,0,0,0.06);
  opacity: 0.7;
  font-weight: 400;
  text-align: center;
}

/* Mobile Filter Toggle */
.mobile-filter-toggle {
  display: none;
  margin-bottom: 20px;
}

.mobile-filter-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 500;
  color: var(--text);
}

.mobile-filter-btn:hover {
  background: var(--surface-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}

.mobile-filter-btn svg:first-child {
  margin-right: 8px;
}

.mobile-filter-btn .toggle-arrow {
  transition: transform var(--transition);
}

.mobile-filter-btn.expanded .toggle-arrow {
  transform: rotate(180deg);
}

@media (max-width: 768px) {
  .mobile-filter-toggle {
    display: block;
  }

  .layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    margin-bottom: 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    order: -1;
  }

  .sidebar.mobile-expanded {
    max-height: 70vh;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow-1);
  }

  .sidebar.mobile-expanded .controls {
    padding: 16px;
  }

  /* Scroll indicator for mobile filters */
  .sidebar.mobile-expanded::after {
    content: '';
    position: sticky;
    bottom: 0;
    height: 20px;
    background: linear-gradient(transparent, var(--surface));
    pointer-events: none;
    display: block;
  }

  /* Improve filter sections on mobile */
  @media (max-width: 768px) {
    .filter-section {
      margin-bottom: 12px;
    }

    .filter-content.expanded {
      max-height: 200px;
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
    }

    .filter-toggle {
      min-height: 44px;
      padding: 12px 16px;
      touch-action: manipulation;
      -webkit-touch-callout: none;
      -webkit-user-select: none;
      user-select: none;
    }

    .filter-toggle:active {
      background: var(--surface-2);
    }
  }

  .main {
    width: 100%;
  }
}

@media (max-width: 640px) {
  h1 { font-size: 1.8rem; }
  .header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .recipe-grid { grid-template-columns: 1fr; }
  input[type="text"] { width: 100%; }
}