/* ==========================================================================
   Design System: 暖色调厨房主题 (Warm Kitchen)
   ========================================================================== */

:root {
  /* Color Palette */
  --color-bg: #FFF9F0;         /* 奶油白背景 */
  --color-primary: #E8722A;    /* 活力橙主色 */
  --color-primary-light: #FF8F4D;
  --color-primary-dark: #C95B1A;
  --color-text-main: #332B25;  /* 深棕色文本 */
  --color-text-light: #8C7B6E; /* 浅色文本 */
  --color-card-bg: #FFFFFF;    /* 纯白卡片 */
  --color-border: #F0E6D8;     /* 柔和边框 */
  
  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Metrics */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(232, 114, 42, 0.05);
  --shadow-md: 0 8px 30px rgba(232, 114, 42, 0.08);
  --shadow-hover: 0 12px 40px rgba(232, 114, 42, 0.15);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-main);
  font-family: var(--font-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: #E0D3C3;
  border-radius: var(--radius-pill);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

section {
  padding: 60px 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  flex-wrap: wrap;
  gap: 16px;
}

.section-title {
  font-size: 1.8rem;
  color: var(--color-text-main);
}

/* ---------- Hero & Search ---------- */
.hero {
  padding: 80px 0 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Decorative Blobs */
.blob {
  position: absolute;
  filter: blur(60px);
  z-index: -1;
  opacity: 0.6;
  animation: float 8s ease-in-out infinite;
}
.blob-1 {
  width: 300px;
  height: 300px;
  background: rgba(232, 114, 42, 0.2);
  top: -50px;
  left: 10%;
}
.blob-2 {
  width: 400px;
  height: 400px;
  background: rgba(255, 218, 166, 0.4);
  bottom: -100px;
  right: 5%;
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.search-box {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tag {
  background: var(--color-primary);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: fadeIn 0.3s ease;
}

.tag-remove {
  cursor: pointer;
  opacity: 0.8;
}
.tag-remove:hover {
  opacity: 1;
}

.input-row {
  display: flex;
  gap: 12px;
}

.ingredient-input {
  flex: 1;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
  font-size: 1rem;
  background: white;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.ingredient-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(232, 114, 42, 0.1);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  padding: 0 24px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Quick Ingredients */
.quick-ingredients {
  margin-top: 24px;
  text-align: left;
}

.quick-title {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}

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

.q-tag {
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
}
.q-tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.q-tag.selected {
  background: rgba(232, 114, 42, 0.1);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
}

/* ---------- Grid & Cards ---------- */
.recipe-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.recipe-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  cursor: pointer;
  border: 1px solid transparent;
  display: flex;
  flex-direction: column;
}

.recipe-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.card-emoji {
  font-size: 2.5rem;
  background: var(--color-bg);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
}

.card-category {
  font-size: 0.8rem;
  background: rgba(232, 114, 42, 0.1);
  color: var(--color-primary-dark);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.card-meta {
  display: flex;
  gap: 16px;
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.c-tag {
  font-size: 0.8rem;
  color: var(--color-text-light);
  background: #F7F3EE;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* Badges for Search Results */
.match-badge {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
  font-size: 0.85rem;
  font-weight: 600;
}
.match-full {
  color: #2E7D32;
}
.match-partial {
  color: var(--color-primary);
}

/* ---------- Buttons & Tabs ---------- */
.btn-icon {
  background: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
}
.btn-icon:hover {
  background: var(--color-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-icon svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}
.spin svg {
  animation: spin 1s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }

.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}

.cat-tab {
  background: white;
  border: 1px solid var(--color-border);
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  color: var(--color-text-light);
  cursor: pointer;
  transition: all 0.2s;
}
.cat-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.cat-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(51, 43, 37, 0.4);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--color-card-bg);
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
  transform: translateY(20px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: 24px 30px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-title-group {
  display: flex;
  align-items: center;
  gap: 16px;
}
.m-emoji {
  font-size: 2rem;
}
.m-title {
  font-size: 1.5rem;
}

.btn-close {
  background: #F0E6D8;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  color: var(--color-text-main);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.btn-close:hover {
  background: var(--color-primary);
  color: white;
}

.modal-body {
  padding: 30px;
  overflow-y: auto;
}

.m-meta-bar {
  display: flex;
  gap: 24px;
  background: var(--color-bg);
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  color: var(--color-text-main);
  font-size: 0.95rem;
  flex-wrap: wrap;
}
.m-meta-bar strong {
  color: var(--color-primary-dark);
}

.m-section-title {
  font-size: 1.2rem;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ingredients-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 30px;
}

.ing-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 16px;
  background: #F9F6F2;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}
.ing-name.main {
  font-weight: 600;
  color: var(--color-primary-dark);
}
.ing-amount {
  color: var(--color-text-light);
}

.steps-list {
  counter-reset: step;
}
.step-item {
  position: relative;
  padding-left: 40px;
  margin-bottom: 20px;
  line-height: 1.7;
}
.step-item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 28px;
  background: rgba(232, 114, 42, 0.1);
  color: var(--color-primary-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
}

/* Dictionary Guide Styles */
.dict-guide-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 10px;
}
.dict-guide-item {
  background: var(--color-bg);
  border-left: 4px solid var(--color-primary);
  padding: 12px 16px;
  border-radius: 4px 8px 8px 4px;
}
.dict-guide-item strong {
  display: block;
  font-size: 1rem;
  color: var(--color-text);
  margin-bottom: 6px;
}
.dict-guide-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Ingredient Link Styles */
.ing-link {
  color: var(--color-primary-dark);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 4px;
  cursor: pointer;
  transition: all 0.2s;
}
.ing-link:hover {
  color: var(--color-primary);
  text-decoration-style: solid;
  background: rgba(232, 114, 42, 0.1);
  border-radius: 4px;
  padding: 0 4px;
  margin: 0 -4px;
}

/* Related Recipes in Modal */
.related-recipes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}
.related-card {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
}
.related-card:hover {
  border-color: var(--color-primary);
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.related-card .r-emoji {
  font-size: 1.5rem;
  margin-right: 12px;
  background: #fff;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.related-card .r-info {
  display: flex;
  flex-direction: column;
}
.related-card .r-name {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
}
.related-card .r-meta {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.empty-state {
  text-align: center;
  padding: 40px 0;
  color: var(--color-text-light);
}
.empty-icon {
  font-size: 3rem;
  margin-bottom: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  section { padding: 30px 0; }
  .hero { padding: 40px 0 30px; }
  .hero-title { font-size: 2rem; margin-bottom: 8px; }
  .hero-subtitle { font-size: 0.95rem; margin-bottom: 24px; }
  .search-box { padding: 16px; }
  .section-title { font-size: 1.4rem; }
  
  .recipe-grid { 
    grid-template-columns: repeat(3, 1fr); 
    gap: 12px; 
  }
  .recipe-card { 
    padding: 12px 8px; 
    align-items: center; 
  }
  .card-header { 
    justify-content: center; 
    margin-bottom: 8px; 
    width: 100%; 
  }
  .card-emoji { 
    width: 40px; 
    height: 40px; 
    font-size: 1.6rem; 
  }
  .card-category { 
    display: none; 
  }
  .card-title { 
    font-size: 0.9rem; 
    margin-bottom: 0; 
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
  }
  .card-meta, .card-tags, .match-badge { 
    display: none !important; 
  }
  
  .cat-tab { padding: 6px 14px; font-size: 0.9rem; }
  .category-tabs { gap: 8px; margin-bottom: 20px; }
  
  .m-meta-bar { gap: 12px; font-size: 0.85rem; padding: 12px; }
  .input-row { flex-direction: column; }
  .btn-primary { padding: 12px; }
  
  .modal-header { padding: 16px 20px; }
  .m-emoji { font-size: 1.5rem; }
  .m-title { font-size: 1.3rem; }
  .modal-body { padding: 20px; }
  .ing-item { padding: 8px 12px; font-size: 0.9rem; }
  .step-item { font-size: 0.95rem; padding-left: 34px; }
  .step-item::before { width: 24px; height: 24px; font-size: 0.85rem; }
}

/* ---------- App Navigation (Tabs) ---------- */
/* View Sections */
.view-section {
  display: none;
  animation: fadeIn 0.3s ease;
}

.view-section.active {
  display: block;
}

/* App Main padding to prevent content hiding behind tab bar on mobile */
.app-main {
  padding-bottom: 80px; /* Space for bottom tab bar */
}

/* Tab Bar Base Styles (Mobile First) */
.app-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: space-around;
  padding: 10px 0;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
  z-index: 100;
}

.tab-btn {
  background: none;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--color-text-light);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
  padding: 5px 10px;
}

.tab-btn .tab-icon {
  font-size: 1.5rem;
  margin-bottom: 4px;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all 0.2s ease;
}

.tab-btn.active {
  color: var(--color-primary);
  font-weight: 600;
}

.tab-btn.active .tab-icon {
  filter: grayscale(0%);
  opacity: 1;
  transform: translateY(-2px);
}

/* Desktop Overrides */
@media (min-width: 768px) {
  .app-main {
    padding-bottom: 0;
    padding-top: 80px;
  }

  .app-tab-bar {
    bottom: auto;
    top: 0;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    padding: 0 20px;
    justify-content: center;
    gap: 40px;
    height: 60px;
    align-items: center;
  }

  .tab-btn {
    flex-direction: row;
    font-size: 1rem;
    height: 100%;
    border-bottom: 3px solid transparent;
    border-radius: 0;
  }

  .tab-btn .tab-icon {
    margin-bottom: 0;
    margin-right: 8px;
    font-size: 1.2rem;
  }

  .tab-btn.active {
    border-bottom-color: var(--color-primary);
  }
}

/* ---------- Custom Form Styles ---------- */
.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 500;
}
.form-group input[type="text"],
.form-group select,
.dynamic-input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  background: white;
  transition: border-color 0.2s;
}
.form-group input[type="text"]:focus,
.form-group select:focus,
.dynamic-input:focus {
  border-color: var(--color-primary);
  outline: none;
}
.form-group.row {
  display: flex;
  gap: 12px;
}
.col {
  flex: 1;
}
.col-small {
  width: 80px;
}
.dynamic-row {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}
.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s;
}
.btn-secondary:hover {
  background: rgba(232, 114, 42, 0.05);
}
.btn-remove {
  background: none;
  border: none;
  color: #d32f2f;
  font-size: 1.2rem;
  cursor: pointer;
  padding: 4px;
}
.btn-remove:hover {
  opacity: 0.8;
}