/* ============================================
   KEVIN'S RECIPE BOOK
   A beautiful, opinionated recipe site
   ============================================ */

/* CSS Custom Properties */
:root {
  --color-cream: #faf8f4;
  --color-cream-dark: #f4f1eb;
  --color-warm-white: #fffef9;
  --color-terracotta: #c45d3a;
  --color-terracotta-dark: #a34828;
  --color-terracotta-light: #e8967a;
  --color-text: #2c2c2c;
  --color-text-light: #5a5a5a;
  --color-text-muted: #8a8a8a;
  --color-border: #e5e0d8;
  --font-serif: 'Libre Baskerville', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --transition-fast: 0.15s ease;
  --transition-med: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--color-cream);
  color: var(--color-text);
  line-height: 1.65;
  margin: 0;
  padding: 0;
  min-height: 100vh;
  
  /* Subtle paper texture */
  background-image: 
    radial-gradient(ellipse at 20% 30%, rgba(196, 93, 58, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(196, 93, 58, 0.02) 0%, transparent 50%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-attachment: fixed;
}

/* Page Layout */
.page-wrapper {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 30px 40px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* ============================================
   HEADER
   ============================================ */
header {
  margin-bottom: 50px;
}

.header-title {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 28px;
}

.header-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
  margin-top: -2px;
}

header h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: 2.2rem;
  margin: 0 0 6px 0;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

header .subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin: 0;
  font-weight: 400;
}

/* Preamble */
.preamble {
  margin-bottom: 30px;
  background: var(--color-warm-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.preamble summary {
  padding: 16px 20px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--color-text);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color var(--transition-fast);
  font-weight: 600;
}

.preamble summary::-webkit-details-marker {
  display: none;
}

.preamble-icon {
  color: var(--color-terracotta);
  font-size: 1.3rem;
  transition: transform var(--transition-med);
}

.preamble[open] .preamble-icon {
  transform: rotate(90deg);
}

.preamble summary:hover {
  color: var(--color-text);
}

.preamble-content {
  padding: 0 20px 20px 20px;
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
  animation: fadeIn var(--transition-med) ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.preamble-content p {
  margin: 0 0 14px 0;
}

.preamble-content p:last-child {
  margin-bottom: 0;
}

/* Controls */
.controls {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.search-wrapper {
  position: relative;
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: color var(--transition-fast);
}

#search {
  width: 100%;
  padding: 14px 18px 14px 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  background: var(--color-warm-white);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

#search:focus {
  outline: none;
  border-color: var(--color-terracotta);
  box-shadow: 0 0 0 3px rgba(196, 93, 58, 0.1), var(--shadow-sm);
}

#search:focus + .search-icon,
.search-wrapper:focus-within .search-icon {
  color: var(--color-terracotta);
}

#search::placeholder {
  color: var(--color-text-muted);
}

.filters-wrapper {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  background: var(--color-warm-white);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: 50px;
  cursor: pointer;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
  border-color: var(--color-terracotta);
  color: var(--color-terracotta);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.filter-btn:active {
  transform: translateY(0) scale(0.98);
}

.filter-btn.active {
  background: var(--color-terracotta);
  color: #fff;
  border-color: var(--color-terracotta);
  box-shadow: 0 2px 8px rgba(196, 93, 58, 0.3);
}

.filter-btn.active:hover {
  background: var(--color-terracotta-dark);
  border-color: var(--color-terracotta-dark);
}

.clear-filters {
  background: transparent;
  border: none;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  display: none;
  align-items: center;
  gap: 5px;
  transition: color var(--transition-fast);
}

.clear-filters svg {
  width: 14px;
  height: 14px;
}

.clear-filters:hover {
  color: var(--color-terracotta);
}

.clear-filters.visible {
  display: inline-flex;
}

/* ============================================
   RECIPE LIST
   ============================================ */
.recipe-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.recipe-card {
  background: var(--color-warm-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  cursor: pointer;
  transition: all var(--transition-med);
  box-shadow: var(--shadow-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  position: relative;
  overflow: hidden;
}

.recipe-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-terracotta);
  transform: scaleY(0);
  transition: transform var(--transition-med);
}

.recipe-card:hover {
  border-color: var(--color-terracotta-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.recipe-card:hover::before {
  transform: scaleY(1);
}

.recipe-card:active {
  transform: translateY(-1px);
}

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

.recipe-card h2 {
  font-family: var(--font-serif);
  font-weight: 400;
  margin: 0 0 8px 0;
  font-size: 1.25rem;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.recipe-card:hover h2 {
  color: var(--color-terracotta);
}

.recipe-card .meta {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.recipe-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.recipe-card .card-thumb {
  width: 90px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: all var(--transition-med);
  box-shadow: var(--shadow-sm);
}

.recipe-card:hover .card-thumb {
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.tag {
  display: inline-block;
  background: var(--color-cream-dark);
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--color-text-light);
  text-transform: lowercase;
  letter-spacing: 0.02em;
}

/* ============================================
   RECIPE DETAIL
   ============================================ */
.recipe-detail {
  display: none;
  background: var(--color-warm-white);
  border-radius: var(--radius-lg);
  padding: 45px 50px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  animation: slideUp var(--transition-slow) ease;
}

@keyframes slideUp {
  from { 
    opacity: 0; 
    transform: translateY(20px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

.recipe-detail.visible {
  display: block;
}

.recipe-detail .back-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.88rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-terracotta);
  padding: 8px 0;
  margin-bottom: 30px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.recipe-detail .back-btn:hover {
  color: var(--color-terracotta-dark);
  gap: 12px;
}

.recipe-detail .back-btn svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.recipe-detail .back-btn:hover svg {
  transform: translateX(-3px);
}

.recipe-detail .detail-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 10px;
}

.recipe-detail .detail-header-content {
  flex: 1;
  min-width: 0;
}

.recipe-detail .detail-thumb {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
  box-shadow: var(--shadow-md);
}

.recipe-detail h1 {
  font-family: var(--font-serif);
  font-weight: 400;
  margin: 0;
  font-size: 2rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.recipe-detail .title-rule {
  width: 60px;
  height: 3px;
  background: var(--color-terracotta);
  margin: 18px 0 20px 0;
  border: none;
  border-radius: 2px;
}

.recipe-detail .meta {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.recipe-detail .meta a {
  color: var(--color-terracotta);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.recipe-detail .meta a:hover {
  color: var(--color-terracotta-dark);
  text-decoration: underline;
}

.recipe-detail .intro {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text-light);
  font-size: 1.15rem;
  line-height: 1.7;
  margin: 35px 0;
  padding: 25px 30px;
  background: linear-gradient(135deg, var(--color-cream) 0%, var(--color-cream-dark) 100%);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-terracotta);
}

/* Section Headers */
.recipe-detail h2 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.8rem;
  margin: 40px 0 20px 0;
  color: var(--color-terracotta);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
}

.recipe-detail h2::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.recipe-detail h3 {
  font-size: 0.85rem;
  font-weight: 600;
  margin: 24px 0 12px 0;
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Ingredients */
.recipe-detail ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.recipe-detail ul li {
  padding: 10px 0 10px 28px;
  position: relative;
  color: var(--color-text-light);
  border-bottom: 1px solid rgba(0,0,0,0.04);
}

.recipe-detail ul li:last-child {
  border-bottom: none;
}

.recipe-detail ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--color-terracotta);
  border-radius: 50%;
  opacity: 0.7;
}

/* Instructions */
.recipe-detail ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.recipe-detail ol li {
  padding: 18px 0 18px 55px;
  position: relative;
  color: var(--color-text-light);
  border-bottom: 1px solid rgba(0,0,0,0.04);
  counter-increment: step;
  line-height: 1.7;
}

.recipe-detail ol li:last-child {
  border-bottom: none;
}

.recipe-detail ol li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 16px;
  width: 32px;
  height: 32px;
  background: var(--color-terracotta);
  color: #fff;
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(196, 93, 58, 0.3);
}

/* Notes */
.recipe-detail .notes {
  margin-top: 45px;
  padding: 22px 26px;
  background: linear-gradient(135deg, #fef9f0 0%, #fdf5e8 100%);
  border-left: 4px solid var(--color-terracotta);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.7;
  position: relative;
}

.recipe-detail .notes::before {
  content: '✎';
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--color-terracotta);
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  box-shadow: 0 2px 6px rgba(196, 93, 58, 0.3);
}

.recipe-detail .notes strong {
  color: var(--color-text);
  font-weight: 600;
}

.recipe-detail .back-btn-bottom {
  background: none;
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-size: 0.88rem;
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--color-text-light);
  padding: 12px 20px;
  margin-top: 40px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.recipe-detail .back-btn-bottom:hover {
  border-color: var(--color-terracotta);
  color: var(--color-terracotta);
}

.recipe-detail .back-btn-bottom svg {
  width: 18px;
  height: 18px;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  margin-top: 60px;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

footer p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin: 0;
}

footer a {
  color: var(--color-terracotta);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

footer a:hover {
  color: var(--color-terracotta-dark);
  text-decoration: underline;
}

/* ============================================
   UTILITY
   ============================================ */
.hidden {
  display: none;
}

.no-results {
  color: var(--color-text-muted);
  font-style: italic;
  padding: 50px 0;
  text-align: center;
  font-size: 1rem;
}

/* ============================================
   MOBILE
   ============================================ */
@media (max-width: 640px) {
  .page-wrapper {
    padding: 35px 20px 30px;
  }

  .header-title {
    gap: 14px;
  }

  .header-icon {
    width: 36px;
    height: 36px;
  }

  header h1 {
    font-size: 1.65rem;
  }

  header .subtitle {
    font-size: 0.9rem;
  }

  .recipe-card {
    padding: 18px 20px;
    gap: 16px;
  }

  .recipe-card h2 {
    font-size: 1.1rem;
  }

  .recipe-card .card-thumb {
    width: 70px;
    height: 70px;
  }

  .recipe-detail {
    padding: 30px 25px;
    border-radius: var(--radius-md);
  }

  .recipe-detail h1 {
    font-size: 1.5rem;
  }

  .recipe-detail .detail-header {
    flex-direction: column-reverse;
    gap: 20px;
  }

  .recipe-detail .detail-thumb {
    width: 100%;
    height: 220px;
    border-radius: var(--radius-md);
  }

  .recipe-detail .intro {
    font-size: 1.05rem;
    padding: 20px 22px;
    margin: 25px 0;
  }

  .recipe-detail ol li {
    padding-left: 45px;
  }

  .recipe-detail ol li::before {
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  body {
    background: #fff;
    padding: 0;
    font-size: 11pt;
    line-height: 1.4;
  }

  .page-wrapper {
    max-width: none;
    padding: 0;
  }

  header,
  .preamble,
  .controls,
  .recipe-list,
  .back-btn,
  footer {
    display: none !important;
  }

  .recipe-detail {
    display: block !important;
    box-shadow: none;
    padding: 0;
    background: #fff;
    border: none;
    animation: none;
  }

  .recipe-detail.visible {
    display: block !important;
  }

  .recipe-detail .detail-header {
    margin-bottom: 15px;
  }

  .recipe-detail .detail-thumb {
    width: 120px;
    height: 120px;
  }

  .recipe-detail h1 {
    font-size: 20pt;
  }

  .recipe-detail .title-rule {
    background: #333;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .recipe-detail .intro {
    background: #f5f5f5;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .recipe-detail h2 {
    font-size: 11pt;
    margin: 20px 0 12px 0;
    page-break-after: avoid;
    color: #333;
  }

  .recipe-detail h2::after {
    display: none;
  }

  .recipe-detail h3 {
    font-size: 10pt;
    margin: 14px 0 8px 0;
    page-break-after: avoid;
  }

  .recipe-detail ul,
  .recipe-detail ol {
    page-break-inside: avoid;
  }

  .recipe-detail ul li::before {
    background: #333;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .recipe-detail ol li {
    padding-left: 40px;
    margin-bottom: 8px;
  }

  .recipe-detail ol li::before {
    background: #333;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .recipe-detail .meta a {
    color: #000;
  }

  .recipe-detail .meta a::after {
    content: " (" attr(href) ")";
    font-size: 9pt;
    color: #666;
  }

  .recipe-detail .notes {
    background: #f9f9f9;
    border-left-color: #333;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .recipe-detail .notes::before {
    display: none;
  }
}