/* ===================================
   Насхема - Modern Dark Theme
   School Project - OLX-Inspired
   =================================== */

/* Modern Dark Theme Variables */
:root {
  /* Dark Backgrounds */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-elevated: #1f1f1f;
  --color-bg-hover: #252525;
  
  /* Primary/Header Color - Dark Navy */
 --color-primary: #0d1117;
  --color-primary-light: #161b22;
  --color-primary-dark: #010409;
  
  /* Teal Accent - The Star of the Show */
  --color-accent: #00d9c0;
  --color-accent-hover: #00ffdd;
  --color-accent-dark: #00a894;
  
  /* Text Colors */
  --color-text-primary: #e6edf3;
  --color-text-secondary: #8b949e;
  --color-text-muted: #6e7681;
  --color-white: #ffffff;
  
  /* Borders */
  --color-border: #21262d;
  --color-background: #0d1117;
  
  /* Status Colors - Vibrant for dark theme */
  --color-success: #00ff88;
  --color-warning: #ffaa00;
  --color-danger: #ff3366;
  --color-info: #00aaff;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Typography */
  --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Shadows - Deeper for dark theme */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.7);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.8);
  --shadow-glow: 0 0 30px rgba(0, 217, 192, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  transition: all var(--transition-base);
}

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Header */
.header {
  background-color: var(--color-primary);
  color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  gap: var(--spacing-lg);
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.logo:hover {
  transform: translateY(-2px);
  filter: brightness(1.2);
}

.logo-circle {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--color-accent);
  box-shadow: var(--shadow-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  transition: all var(--transition-base);
}

.logo-circle:hover {
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 40px rgba(0, 217, 192, 0.5);
  transform: rotate(5deg) scale(1.05);
}

.logo-image {
  width: 60px;
  height: 60px;
  object-fit: cover;
  display: block;
  filter: brightness(1.1);
  transition: all var(--transition-base);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex: 1;
  justify-content: flex-end;
}

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

.nav-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  position: relative;
  transition: all var(--transition-fast);
  background-color: var(--color-primary-light);
}

.nav-icon:hover {
  background-color: var(--color-bg-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.nav-icon svg {
  width: 20px;
  height: 20px;
  fill: var(--color-text-secondary);
  transition: fill var(--transition-fast);
}

.nav-icon:hover svg {
  fill: var(--color-accent);
}

.badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background-color: var(--color-danger);
  color: var(--color-white);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: var(--font-size-base);
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-base);
  border: 1px solid transparent;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  background: linear-gradient(135deg, var(--color-accent-hover), var(--color-accent));
}

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

.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  background-color: rgba(0, 217, 192, 0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Search Section */
.search-section {
  background-color: var(--color-primary-light);
  padding: var(--spacing-2xl) 0;
  border-bottom: 1px solid var(--color-border);
}

.search-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.search-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.search-form {
  display: flex;
  gap: var(--spacing-sm);
  background-color: var(--color-bg-tertiary);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xs);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.search-form:focus-within {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.search-input {
  flex: 1;
  border: none;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  outline: none;
  background: transparent;
  color: var(--color-text-primary);
}

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

.location-select {
  border: none;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  outline: none;
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-md);
  cursor: pointer;
  min-width: 150px;
  transition: all var(--transition-fast);
}

.location-select:hover {
  background-color: var(--color-bg-hover);
  color: var(--color-accent);
}

.btn-search {
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-primary);
  padding: var(--spacing-md) var(--spacing-2xl);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow);
}

.btn-search:hover {
  background: linear-gradient(135deg, var(--color-accent-hover), var(--color-accent));
  transform: scale(1.02);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

/* Categories Section */
.categories-section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-primary);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background-color: var(--color-bg-elevated);
  border-color: var(--color-accent);
}

.category-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-glow);
}

.category-card:hover .category-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 0 40px rgba(0, 217, 192, 0.5);
}

.category-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--color-primary);
}

.category-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-align: center;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.category-card:hover .category-name {
  color: var(--color-accent);
}

/* Listings Section */
.listings-section {
  padding: var(--spacing-xl) 0 var(--spacing-3xl);
}

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

.filter-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: rgba(0, 217, 192, 0.1);
  box-shadow: var(--shadow-glow);
}

.listings-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

/* Listing Card */
.listing-card {
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  position: relative;
}

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

.listing-image-wrapper {
  position: relative;
  width: 100%;
  padding-top: 75%; /* 4:3 aspect ratio */
  overflow: hidden;
  background-color: var(--color-bg-elevated);
}

.listing-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.favorite-btn {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 36px;
  height: 36px;
  background-color: rgba(26, 26, 26, 0.95);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.favorite-btn:hover {
  transform: scale(1.1);
  background-color: var(--color-bg-elevated);
  border-color: var(--color-danger);
}

.favorite-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: var(--color-danger);
  stroke-width: 2;
  transition: all var(--transition-fast);
}

.favorite-btn.active svg {
  fill: var(--color-danger);
}

.listing-badge {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
  color: var(--color-primary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-glow);
}

.listing-content {
  padding: var(--spacing-md);
}

.listing-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

.listing-price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
}

.listing-price-euro {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 400;
  margin-left: var(--spacing-xs);
}

.listing-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
}

.listing-location,
.listing-date {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-accent);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes glow {
  0%, 100% {
    box-shadow: var(--shadow-glow);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 217, 192, 0.5);
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

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

.hidden {
  display: none;
}