/* ==========================================
   LOTTE MART INVENTORY SEARCH - STYLES
   Modern, Premium Design System
   ========================================== */

/* ==========================================
   CSS VARIABLES & DESIGN TOKENS
   ========================================== */
:root {
  /* Lotte Mart Brand Colors */
  --lotte-red: #E31837;
  --lotte-red-dark: #C41230;
  --lotte-red-light: #FF3D5C;

  /* Extended Color Palette */
  --primary: #E31837;
  --primary-dark: #C41230;
  --primary-light: #FF3D5C;
  --secondary: #2D3748;
  --accent: #FFD700;

  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;

  /* Semantic Colors */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: #3B82F6;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #E31837 0%, #FF3D5C 100%);
  --gradient-secondary: linear-gradient(135deg, #2D3748 0%, #4A5568 100%);
  --gradient-accent: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(227, 24, 55, 0.3);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Theme Colors (Light Mode Default) */
  --bg-primary: #FFFFFF;
  --bg-secondary: linear-gradient(135deg, #F9FAFB 0%, #E5E7EB 100%);
  --bg-card: #FFFFFF;
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-tertiary: #6B7280;
  --border-color: #E5E7EB;
  --border-color-hover: #D1D5DB;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bg-primary: #1F2937;
  --bg-secondary: linear-gradient(135deg, #111827 0%, #1F2937 100%);
  --bg-card: #374151;
  --text-primary: #F9FAFB;
  --text-secondary: #D1D5DB;
  --text-tertiary: #9CA3AF;
  --border-color: #4B5563;
  --border-color-hover: #6B7280;

  --gray-50: #374151;
  --gray-100: #4B5563;
  --gray-200: #6B7280;
  --gray-700: #D1D5DB;
  --gray-800: #E5E7EB;
  --gray-900: #F9FAFB;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition-base), color var(--transition-base);
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.5rem;
}

/* ==========================================
   HEADER
   ========================================== */
.header {
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  transition: background var(--transition-base);
}

.header-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-xl);
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  height: 50px;
  width: auto;
  transition: transform var(--transition-base);
}

.logo:hover {
  transform: scale(1.05);
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================
   MAIN CONTAINER
   ========================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-xl);
}

/* ==========================================
   SEARCH SECTION
   ========================================== */
.search-section {
  background: var(--bg-card);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  box-shadow: var(--shadow-xl);
  margin-bottom: var(--spacing-2xl);
  position: relative;
  overflow: hidden;
  transition: background var(--transition-base);
}

.search-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.search-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--text-primary);
}

.search-form {
  display: flex;
  gap: var(--spacing-md);
  max-width: 700px;
  margin: 0 auto;
}

.search-input-wrapper {
  flex: 1;
  position: relative;
}

.search-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1.25rem;
  pointer-events: none;
  transition: color var(--transition-base);
}

.search-input {
  width: 100%;
  padding: 1.2rem 1.5rem 1.2rem 3.5rem;
  /* Increased padding */
  border: 2px solid var(--border-color);
  border-radius: var(--radius-xl);
  font-size: 1.2rem;
  /* Increased font size */
  font-family: var(--font-sans);
  transition: all var(--transition-base);
  background: var(--bg-primary);
  color: var(--text-primary);
}

.search-input::placeholder {
  color: var(--text-tertiary);
  opacity: 0.7;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  background: var(--bg-card);
  box-shadow: 0 0 0 4px rgba(227, 24, 55, 0.15);
  /* Slightly larger shadow spread */
}

.search-button {
  padding: 0 2rem;
  /* Larger horizontal padding, let height align with input via flex or minimal vertical padding */
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius-xl);
  font-size: 1.2rem;
  /* Increased font size */
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  white-space: nowrap;
}

.search-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.search-button:active {
  transform: translateY(0);
}

/* ==========================================
   RECOMMENDED CATEGORIES SECTION (NEW)
   ========================================== */
.recommended-section {
  max-width: 1000px;
  margin: 0 auto 3rem auto;
  padding: 0 var(--spacing-md);
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
  background: linear-gradient(to bottom, var(--bg-card), rgba(227, 24, 55, 0.03));
}

.category-icon {
  font-size: 2.5rem;
  margin-bottom: 0.8rem;
  background: var(--gray-50);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: transform var(--transition-base);
}

.category-card:hover .category-icon {
  transform: scale(1.1) rotate(5deg);
  background: white;
}

.category-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.3rem;
}

.category-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* ==========================================
   FILTER & KEYWORDS SECTION (Unified)
   ========================================== */
.filter-section {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  margin-bottom: var(--spacing-2xl);
  transition: background var(--transition-base);
}

.filter-group {
  margin-bottom: 2rem;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 2rem;
}

.popular-keywords-group {
  text-align: center;
}

.keyword-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.keyword-link {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: var(--gray-50);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition-base);
}

.keyword-link:hover {
  background: var(--white);
  border-color: var(--primary-light);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Recent Searches */
.recent-searches-container {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-color);
  text-align: left;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  /* Horizontal Layout Change */
  display: flex;
  align-items: center;
  gap: 1rem;
}

.recent-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 600;
  /* Remove bottom margin as it is now flex row */
  margin-bottom: 0;
  white-space: nowrap;
}

.recent-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 1;
  /* Allow chips to take remaining space */
}

.filter-title {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  /* Centered title */
  gap: var(--spacing-sm);
}

.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  /* Centered chips */
}

.filter-chip {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-card);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-chip:hover {
  border-color: var(--primary-light);
  background: rgba(227, 24, 55, 0.15);
  transform: translateY(-1px);
  color: var(--text-primary);
}

.filter-chip.active {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

/* ==========================================
   RESULTS SECTION
   ========================================== */
.results-section {
  min-height: 400px;
}

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-md) 0;
}

.results-count {
  font-size: 1.125rem;
  color: var(--gray-700);
}

.results-count strong {
  color: var(--primary);
  font-weight: 700;
}

.sort-select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--white);
}

.sort-select:focus {
  outline: none;
  border-color: var(--primary);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

/* ==========================================
   STORE CARD
   ========================================== */
.store-card {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);
}

.store-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.store-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--gray-100);
}

.store-content {
  padding: var(--spacing-lg);
}

.store-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: var(--spacing-md);
}

.store-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
}

.store-region {
  display: inline-block;
  padding: 0.25rem var(--spacing-sm);
  background: var(--gray-100);
  color: var(--gray-600);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.stock-badge {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-weight: 700;
  font-size: 1.5rem;
  text-align: center;
  min-width: 80px;
}

.stock-badge.in-stock {
  background: linear-gradient(135deg, #10B981 0%, #34D399 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.stock-badge.low-stock {
  background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.stock-badge.out-of-stock {
  background: linear-gradient(135deg, #EF4444 0%, #F87171 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.stock-label {
  font-size: 0.75rem;
  display: block;
  margin-top: 0.25rem;
  opacity: 0.9;
}

.store-address {
  color: var(--gray-600);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: start;
  gap: var(--spacing-sm);
}

.store-phone {
  color: var(--gray-600);
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.store-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.action-button {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-md);
  background: var(--white);
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.action-button:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(227, 24, 55, 0.05);
}

.action-button.primary {
  background: var(--gradient-primary);
  color: var(--white);
  border-color: var(--primary);
}

.action-button.primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ==========================================
   LOADING STATE
   ========================================== */
.loading {
  text-align: center;
  padding: var(--spacing-2xl);
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--spacing-md);
}

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

/* ==========================================
   EMPTY STATE
   ========================================== */
/* ==========================================
   EMPTY STATE
   ========================================== */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
  /* Increased vertical padding */
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  /* Deeper shadow */
  transition: all var(--transition-base);
  border: 1px solid var(--border-color);

  /* Glassmorphism-like subtle background tweak */
  background: linear-gradient(145deg, var(--bg-card) 0%, rgba(255, 255, 255, 0.8) 100%);

  /* Ensure it spans full width in grid container */
  grid-column: 1 / -1;
  width: 100%;
}

[data-theme="dark"] .empty-state {
  background: linear-gradient(145deg, var(--bg-card) 0%, rgba(0, 0, 0, 0.2) 100%);
}

.empty-icon-wrapper {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-lg);
  background: linear-gradient(135deg, rgba(227, 24, 55, 0.08), rgba(255, 61, 92, 0.03));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(227, 24, 55, 0.1);
  animation: float 6s ease-in-out infinite;
  box-shadow: 0 10px 25px -5px rgba(227, 24, 55, 0.1);
}

.empty-icon {
  font-size: 3.5rem;
  line-height: 1;
  margin-bottom: 0;
  opacity: 1;
  filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

.empty-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gray-800);
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.empty-description {
  color: var(--gray-500);
  font-size: 1.05rem;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Float Animation */
@keyframes float {
  0% {
    transform: translateY(0px);
  }

  50% {
    transform: translateY(-12px);
  }

  100% {
    transform: translateY(0px);
  }
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-xl);
  text-align: center;
  margin-top: var(--spacing-2xl);
  transition: background var(--transition-base), color var(--transition-base);
}

[data-theme="dark"] .footer {
  background: #0F172A;
  color: var(--gray-400);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
}

.footer p {
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.footer a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-base);
  font-weight: 500;
}

.footer a:hover {
  color: var(--white);
  text-decoration: underline;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .header-content {
    flex-direction: column;
    text-align: center;
    padding: var(--spacing-md);
  }

  .logo {
    height: 40px;
  }

  .search-form {
    flex-direction: column;
  }

  .search-button {
    width: 100%;
  }

  .results-grid {
    grid-template-columns: 1fr;
  }

  .results-header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
  }

  .filter-chips {
    justify-content: center;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .search-section,
  .filter-section {
    padding: var(--spacing-lg);
  }

  .store-actions {
    flex-direction: column;
  }
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-base) ease-out;
}

/* ==========================================
   UTILITIES
   ========================================== */
.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.mt-1 {
  margin-top: var(--spacing-xs);
}

.mt-2 {
  margin-top: var(--spacing-sm);
}

.mt-3 {
  margin-top: var(--spacing-md);
}

.mt-4 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-xs);
}

.mb-2 {
  margin-bottom: var(--spacing-sm);
}

.mb-3 {
  margin-bottom: var(--spacing-md);
}

.mb-4 {
  margin-bottom: var(--spacing-lg);
}

/* Keyword Links */
.keyword-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 2rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.keyword-link:hover {
  background-color: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

/* ==========================================
   NO RESULTS STATE SPECIFICS
   ========================================== */
.empty-state.no-results .highlight {
  color: var(--primary);
  background: rgba(227, 24, 55, 0.08);
  padding: 0 4px;
  border-radius: 4px;
}

.empty-actions {
  margin-top: var(--spacing-xl);
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .empty-actions {
    flex-direction: column;
  }

  .empty-actions .action-button {
    width: 100%;
  }
}