/* ===================================
   Design System Variables
   =================================== */
:root {
  --primary: #1e3a8a;
  --primary-light: #3b82f6;
  --primary-gradient: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
  --secondary: #f3f4f6;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --bg-color: #f9fafb;
  --text-main: #111827;
  --text-muted: #6b7280;
  --surface: #ffffff;
  --border-color: #e5e7eb;
  --danger: #ef4444;
  --success: #10b981;
  --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 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================================
   Typography
   =================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary);
}

/* ===================================
   Layout
   =================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

.container-wide {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
}

main {
  flex-grow: 1;
}

/* ===================================
   Navbar
   =================================== */
.navbar {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.875rem 0;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary) !important;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand .brand-icon {
  font-size: 1.75rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.navbar .btn-primary {
  background: #3b82f6;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
  color: #ffffff;
  font-weight: 700;
  padding: 0.5rem 1.25rem;
  font-size: 0.9375rem;
}

.navbar .btn-primary:hover {
  background: #2563eb;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.5);
  transform: translateY(-1px);
  color: #ffffff;
}

.btn-nav-login {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-md);
  border: 1.5px solid #93c5fd;
  background: transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-nav-login:hover {
  background: #eff6ff;
  color: #1d4ed8;
  border-color: #3b82f6;
}

.nav-links a {
  color: var(--primary);
  font-weight: 500;
  font-size: 0.9375rem;
  position: relative;
  padding: 0.25rem 0;
}

.nav-links a:hover {
  color: var(--primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  border-radius: 1px;
  transition: width var(--transition-base);
}

.nav-links a:hover::after {
  width: 100%;
}

/* ===================================
   Buttons
   =================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  font-family: inherit;
  line-height: 1.5;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: 0 2px 8px rgba(30, 58, 138, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 6px 20px rgba(30, 58, 138, 0.35);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-lg {
  padding: 0.875rem 2rem;
  font-size: 1.0625rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

/* ===================================
   Forms — Premium
   =================================== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Base input / select / textarea */
.form-control {
  width: 100%;
  padding: 0.8125rem 1.125rem;
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  color: var(--text-main);
  background: var(--surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

.form-control::placeholder {
  color: #b0b7c3;
  font-weight: 400;
}

.form-control:hover:not(:focus) {
  border-color: #c4cdd8;
  background: #fdfdff;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-light);
  background: #fff;
  box-shadow: 0 0 0 3.5px rgba(59, 130, 246, 0.14);
}

/* Select — custom arrow */
select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  padding-right: 2.75rem;
  cursor: pointer;
}

/* Textarea */
textarea.form-control {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}

/* File input — premium dashed zone */
input[type="file"].form-control,
input[type="file"] {
  padding: 0;
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-color);
  cursor: pointer;
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

input[type="file"].form-control::file-selector-button,
input[type="file"]::file-selector-button {
  padding: 0.75rem 1.125rem;
  margin-right: 1rem;
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border-radius: 0;
  transition: opacity var(--transition-fast);
}

input[type="file"].form-control::file-selector-button:hover,
input[type="file"]::file-selector-button:hover {
  opacity: 0.85;
}

input[type="file"].form-control:hover,
input[type="file"]:hover {
  border-color: var(--primary-light);
  background: rgba(59, 130, 246, 0.03);
}

/* Checkbox & Radio — custom */
input[type="checkbox"],
input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--surface);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  vertical-align: middle;
  flex-shrink: 0;
}

input[type="radio"] {
  border-radius: 50%;
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
  background: var(--primary-gradient);
  border-color: transparent;
}

input[type="checkbox"]:checked::after {
  content: '';
  display: block;
  width: 5px;
  height: 9px;
  border: 2px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px, -1px);
}

input[type="radio"]:checked::after {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.18);
}

input[type="checkbox"]:hover:not(:checked),
input[type="radio"]:hover:not(:checked) {
  border-color: var(--primary-light);
}

/* ===================================
   Cards
   =================================== */
.card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  padding: 2rem;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.auth-container {
  max-width: 420px;
  margin: 2rem auto;
}

/* ===================================
   Alerts / Messages
   =================================== */
.messages {
  margin-bottom: 1.5rem;
}

.alert {
  padding: 0.875rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.75rem;
  font-weight: 500;
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideDown 0.3s ease;
}

.alert-success {
  background: #ecfdf5;
  border: 1px solid #a7f3d0;
  color: #065f46;
}

.alert-error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: #991b1b;
}

.alert-warning {
  background: #fffbeb;
  border: 1px solid #fde68a;
  color: #92400e;
}

.alert-info {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
  background: var(--primary-gradient);
  position: relative;
  overflow: hidden;
  padding: 6rem 0 5rem;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeInUp 0.6s ease;
}

.hero h1 {
  color: #ffffff;
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: -0.03em;
  animation: fadeInUp 0.6s 0.1s ease both;
}

.hero h1 .text-accent {
  color: var(--accent-light);
  position: relative;
}

.hero-subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 550px;
  animation: fadeInUp 0.6s 0.2s ease both;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero-search {
  display: flex;
  max-width: 600px;
  margin-top: 2.5rem;
  animation: fadeInUp 0.6s 0.35s ease both;
}

.hero-search .form-control {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  border: none;
  padding: 1rem 1.5rem;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
}

.hero-search .btn {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 1rem 2rem;
  box-shadow: none;
  white-space: nowrap;
}

.hero-stats {
  display: flex;
  gap: 3rem;
  margin-top: 3.5rem;
  animation: fadeInUp 0.6s 0.4s ease both;
}

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

.hero-stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.hero-stat-label {
  display: block;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.375rem;
  font-weight: 500;
}

/* ===================================
   SECTION STYLES
   =================================== */
.section {
  padding: 5rem 0;
}

.section-dark {
  background: #111827;
  color: #fff;
}

.section-gray {
  background: var(--secondary);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-light);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===================================
   FEATURES SECTION
   =================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  text-align: center;
  padding: 2.5rem 2rem;
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--border-color);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.08), rgba(59, 130, 246, 0.12));
  color: var(--primary);
}

.feature-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* ===================================
   CATEGORY CARDS (Home Page)
   =================================== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.category-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--surface);
  border: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.category-card-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.06), rgba(59, 130, 246, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  transition: all var(--transition-base);
}

.category-card:hover .category-card-icon {
  background: var(--primary-gradient);
  transform: scale(1.1);
}

.category-card:hover .category-card-icon span {
  filter: brightness(0) invert(1);
}

.category-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-main);
  margin: 0;
}

.category-card .item-count {
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===================================
   HOW IT WORKS SECTION
   =================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  position: relative;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: var(--border-color);
  z-index: 0;
}

.step-card {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #fff;
  font-weight: 800;
  font-size: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  box-shadow: 0 4px 16px rgba(30, 58, 138, 0.3);
  transition: all var(--transition-base);
}

.step-card:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 8px 24px rgba(30, 58, 138, 0.4);
}

.step-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* ===================================
   CTA SECTION
   =================================== */
.cta-section {
  background: var(--primary-gradient);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-section .container {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  color: #fff;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* ===================================
   BROWSE / CATALOG PAGE
   =================================== */
.browse-page {
  padding: 2rem 0 4rem;
}

.browse-header {
  margin-bottom: 2rem;
}

.browse-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.browse-header p {
  color: var(--text-muted);
  font-size: 1rem;
}

.browse-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 2rem;
  align-items: start;
}

.browse-sidebar {
  position: sticky;
  top: 100px;
}

.filter-panel {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.filter-panel h3 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.filter-group {
  margin-bottom: 1.5rem;
}

.filter-group:last-child {
  margin-bottom: 0;
}

.filter-group label {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
}

.filter-categories-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.filter-categories-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.625rem 0.875rem;
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.filter-categories-list a:hover {
  background: rgba(30, 58, 138, 0.06);
  color: var(--primary);
}

.filter-categories-list a.active {
  background: rgba(30, 58, 138, 0.1);
  color: var(--primary);
  font-weight: 600;
}

.filter-count {
  font-size: 0.75rem;
  background: var(--secondary);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-weight: 600;
}

.filter-categories-list a.active .filter-count {
  background: rgba(30, 58, 138, 0.15);
  color: var(--primary);
}

/* Search bar inside browse page */
.browse-search {
  display: flex;
  margin-bottom: 2rem;
  position: relative;
}

.browse-search .form-control {
  border-radius: var(--radius-lg);
  padding: 0.875rem 1.25rem 0.875rem 3rem;
  font-size: 0.9375rem;
  border: 1.5px solid var(--border-color);
  background: var(--surface);
}

.browse-search .search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.125rem;
}

.browse-search .btn {
  margin-left: 0.75rem;
  border-radius: var(--radius-lg);
}

/* Item Grid */
.items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.item-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
}

.item-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  color: inherit;
}

.item-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.item-card:hover .item-card-image {
  transform: scale(1.05);
}

.item-card-image-wrapper {
  overflow: hidden;
  position: relative;
}

.item-card-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgba(30, 58, 138, 0.9);
  color: #fff;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
}

.item-card-no-image {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #e5e7eb, #f3f4f6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.item-card-body {
  padding: 1.25rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.item-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary-light);
  margin-bottom: 0.375rem;
}

.item-card-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  line-height: 1.3;
}

.item-card-desc {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.item-card-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.item-card-price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
}

.item-card-price span {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-muted);
}

.item-card-owner {
  font-size: 0.8125rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

/* Results Info */
.results-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.results-count {
  font-size: 0.9375rem;
  color: var(--text-muted);
}

.results-count strong {
  color: var(--text-main);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 5rem 2rem;
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  grid-column: 1 / -1;
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-muted);
  max-width: 400px;
  margin: 0 auto;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
  background: #111827;
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  color: #fff !important;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  display: block;
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
}

.footer h4 {
  color: #fff;
  font-size: 0.9375rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

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

.animate-in {
  animation: fadeInUp 0.6s ease both;
}

.animate-delay-1 {
  animation-delay: 0.1s;
}

.animate-delay-2 {
  animation-delay: 0.2s;
}

.animate-delay-3 {
  animation-delay: 0.3s;
}

.animate-delay-4 {
  animation-delay: 0.4s;
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid::before {
    display: none;
  }

  .browse-layout {
    grid-template-columns: 1fr;
  }

  .browse-sidebar {
    position: static;
  }

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

@media (max-width: 768px) {
  .hero {
    padding: 3.5rem 0 3rem;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.0625rem;
  }

  .hero-stats {
    gap: 2rem;
  }

  .hero-stat-number {
    font-size: 1.5rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

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

  .hero-search .form-control {
    border-radius: var(--radius-lg);
  }

  .hero-search .btn {
    border-radius: var(--radius-lg);
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: 1.875rem;
  }

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

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

  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .nav-links {
    gap: 0.75rem;
    font-size: 0.8125rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .cta-section h2 {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.875rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
    align-items: flex-start;
  }

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

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

/* ===================================
   INBOX STYLES
   =================================== */
.inbox-list {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.inbox-thread {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}

.inbox-thread:hover {
  background: rgba(30, 58, 138, 0.03);
  color: inherit;
}

.inbox-thread:last-child {
  border-bottom: none;
}

.inbox-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.inbox-thread-body {
  flex: 1;
  min-width: 0;
}

.inbox-thread-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.125rem;
}

.inbox-thread-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-main);
}

.inbox-thread-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.inbox-thread-item {
  font-size: 0.8125rem;
  color: var(--primary-light);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.inbox-thread-preview {
  font-size: 0.875rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.inbox-thread-arrow {
  color: var(--text-muted);
  font-size: 1.25rem;
  flex-shrink: 0;
  opacity: 0;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.inbox-thread:hover .inbox-thread-arrow {
  opacity: 1;
  transform: translateX(4px);
}

/* ===================================
   CHAT / THREAD STYLES
   =================================== */
.chat-container {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 140px);
  max-height: 800px;
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--surface);
  flex-shrink: 0;
}

.chat-back-btn {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.chat-back-btn:hover {
  background: var(--secondary);
  color: var(--primary);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: #f8f9fb;
}

.chat-item-banner {
  background: var(--surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  margin-bottom: 0.5rem;
}

.chat-bubble-row {
  display: flex;
}

.chat-bubble-sent {
  justify-content: flex-end;
}

.chat-bubble-received {
  justify-content: flex-start;
}

.chat-bubble {
  max-width: 70%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  animation: fadeInUp 0.2s ease;
}

.chat-bubble-sent .chat-bubble {
  background: var(--primary-gradient);
  color: #fff;
  border-bottom-right-radius: 4px;
}

.chat-bubble-received .chat-bubble {
  background: var(--surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-bottom-left-radius: 4px;
}

.chat-bubble-text {
  font-size: 0.9375rem;
  line-height: 1.5;
  word-break: break-word;
}

.chat-bubble-meta {
  font-size: 0.6875rem;
  margin-top: 0.375rem;
  opacity: 0.7;
}

.chat-bubble-sent .chat-bubble-meta {
  text-align: right;
}

.chat-input-area {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--surface);
  flex-shrink: 0;
}

.chat-form {
  display: flex;
  gap: 0.75rem;
}

.chat-input {
  flex: 1;
  border-radius: var(--radius-full) !important;
  padding: 0.75rem 1.25rem !important;
}

.chat-send-btn {
  border-radius: var(--radius-full);
  padding: 0.75rem 1.5rem;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .chat-container {
    height: calc(100vh - 120px);
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .chat-bubble {
    max-width: 85%;
  }
}

/* ===================================
   NOTIFICATION DOT — Animated beacon
   =================================== */
@keyframes pulse-beacon {
  0%   { transform: scale(1);   opacity: 1; }
  70%  { transform: scale(2.2); opacity: 0; }
  100% { transform: scale(2.2); opacity: 0; }
}

.nav-link-with-badge {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.notification-dot {
  position: absolute;
  top: -3px;
  right: -6px;
  width: 9px;
  height: 9px;
  background-color: #ef4444;
  border-radius: 50%;
  border: 2px solid #fff;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
}

/* Pulsing ring around the dot */
.notification-dot::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.45);
  animation: pulse-beacon 1.6s ease-out infinite;
}

/* ===================================
   INBOX — Unread thread (FB/IG style)
   =================================== */
.inbox-thread {
  position: relative;
}

/* Unread thread: strong blue-tinted background + left accent bar */
.inbox-thread-unread {
  background: linear-gradient(to right, rgba(59, 130, 246, 0.07), rgba(59, 130, 246, 0.02)) !important;
  border-left: 4px solid var(--primary-light) !important;
}

/* Bold name for unread */
.inbox-thread-unread .inbox-thread-name {
  font-weight: 800;
  color: var(--text-main);
}

/* Bold preview text for unread */
.inbox-thread-unread .inbox-thread-preview {
  color: var(--text-main);
  font-weight: 600;
}

/* Blue dot indicator badge for unread */
.inbox-thread-unread::after {
  content: 'New';
  position: absolute;
  right: 3rem;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-light);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

/* ===================================
   MISC BADGES
   =================================== */
.highlight-new {
  background-color: #fffbeb !important;
  border-left: 4px solid var(--accent) !important;
}

.badge-count {
  background-color: var(--danger);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-full);
  margin-left: 0.25rem;
  vertical-align: middle;
}