/* ============================================
   DESERT STARS MOTORS — Design System
   Direction: Editorial Clean
   Fonts: DM Serif Display, Plus Jakarta Sans, JetBrains Mono
   ============================================ */

:root {
  /* --- Fonts --- */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* --- Colors: Backgrounds --- */
  --bg: #FAFAF9;
  --surface: #FFFFFF;
  --surface-alt: #F5F0EB;
  --border: #E7E0D8;
  --border-light: #F0EBE4;

  /* --- Colors: Text --- */
  --text-primary: #1A1A1A;
  --text-body: #3D3D3D;
  --text-muted: #8C8279;
  --text-light: #B5ADA5;

  /* --- Colors: Brand --- */
  --navy: #1B2A4A;
  --navy-light: #243656;
  --navy-dark: #121D33;
  --amber: #D4870E;
  --amber-hover: #B8740A;
  --amber-light: #F5DEB3;
  --amber-glow: rgba(212, 135, 14, 0.15);
  --teal: #0D7C72;
  --teal-hover: #096B62;
  --teal-light: rgba(13, 124, 114, 0.1);
  --danger: #C93B3B;
  --danger-light: rgba(201, 59, 59, 0.1);
  --danger-glow: #EF4444;

  /* --- Spacing --- */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* --- Border Radius --- */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 1px 2px rgba(27, 42, 74, 0.04);
  --shadow-md: 0 4px 12px rgba(27, 42, 74, 0.06);
  --shadow-lg: 0 8px 24px rgba(27, 42, 74, 0.08);
  --shadow-xl: 0 16px 40px rgba(27, 42, 74, 0.12);
  --shadow-card-hover: 0 8px 24px rgba(27, 42, 74, 0.1);

  /* --- Transitions --- */
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 0.15s;
  --duration-normal: 0.25s;
  --duration-slow: 0.4s;

  /* --- Layout --- */
  --max-width: 1280px;
  --nav-height: 72px;
}

/* ============================================
   GLOBAL RESETS & BASE
   ============================================ */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-body);
  background-color: var(--bg);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

.ds-h1 {
  font-family: var(--font-display);
  font-size: 42px;
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.ds-h2 {
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 400;
  line-height: 1.25;
  color: var(--text-primary);
}

.ds-h3 {
  font-family: var(--font-body);
  font-size: 24px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

.ds-h4 {
  font-family: var(--font-body);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
}

.ds-body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-body);
}

.ds-small {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-muted);
}

.ds-mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.ds-section-label {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

/* ============================================
   BUTTONS
   ============================================ */

.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.ds-btn:active {
  transform: scale(0.97);
}

.ds-btn-primary {
  background-color: var(--amber);
  color: #FFFFFF;
}

.ds-btn-primary:hover {
  background-color: var(--amber-hover);
  box-shadow: 0 4px 16px rgba(212, 135, 14, 0.3);
  transform: translateY(-1px);
}

.ds-btn-secondary {
  background-color: var(--surface);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.ds-btn-secondary:hover {
  background-color: var(--surface-alt);
  border-color: var(--text-muted);
}

.ds-btn-outline-white {
  background-color: transparent;
  color: #FFFFFF;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}

.ds-btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}

.ds-btn-ghost {
  background: none;
  border: none;
  color: var(--amber);
  padding: 8px 12px;
}

.ds-btn-ghost:hover {
  background-color: var(--amber-glow);
}

.ds-btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.ds-btn-lg {
  padding: 16px 32px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.ds-btn-block {
  width: 100%;
}

/* ============================================
   CARDS
   ============================================ */

.ds-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

.ds-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.ds-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.ds-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

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

.ds-card-body {
  padding: var(--space-lg);
}

/* ============================================
   BADGES & PILLS
   ============================================ */

.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-body);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.ds-badge-blind {
  background-color: var(--navy);
  color: #FFFFFF;
}

.ds-badge-open {
  background-color: var(--teal);
  color: #FFFFFF;
}

.ds-badge-reserved {
  background-color: var(--danger-light);
  color: var(--danger);
  border: 1px solid var(--danger);
}

.ds-badge-relisted {
  background-color: rgba(212, 135, 14, 0.1);
  color: var(--amber);
  border: 1px solid var(--amber);
}

.ds-badge-active {
  background-color: rgba(13, 124, 114, 0.1);
  color: var(--teal);
}

/* --- Filter Pills --- */

.ds-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-body);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
  line-height: 1;
}

.ds-pill:hover {
  border-color: var(--text-muted);
  background: var(--surface-alt);
}

.ds-pill-active {
  background-color: var(--teal);
  color: #FFFFFF;
  border-color: var(--teal);
}

.ds-pill-active:hover {
  background-color: var(--teal-hover);
  border-color: var(--teal-hover);
}

/* --- Category Tabs --- */

.ds-category-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-body);
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}

.ds-category-tab:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.ds-category-tab-active {
  background-color: var(--amber);
  color: #FFFFFF;
  border-color: var(--amber);
  font-weight: 600;
}

.ds-category-tab-active:hover {
  background-color: var(--amber-hover);
  border-color: var(--amber-hover);
}

.ds-category-count {
  font-size: 12px;
  font-weight: 600;
  opacity: 0.7;
}

/* ============================================
   COUNTDOWN TIMER
   ============================================ */

.ds-timer {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

.ds-timer-warning {
  color: var(--amber);
  font-weight: 600;
}

.ds-timer-urgent {
  color: var(--danger);
  font-weight: 700;
  animation: ds-pulse 1.5s ease-in-out infinite;
}

@keyframes ds-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ============================================
   BID DISPLAY
   ============================================ */

.ds-bid-amount {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--amber);
}

.ds-bid-label {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   NAVIGATION
   ============================================ */

.ds-nav {
  background-color: var(--navy);
  height: var(--nav-height);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.ds-nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
}

.ds-nav-link {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-out);
  cursor: pointer;
  position: relative;
}

.ds-nav-link:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.08);
}

.ds-nav-link-active {
  color: #FFFFFF;
}

.ds-nav-link-active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--amber);
  border-radius: 1px;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.ds-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.ds-section {
  padding: var(--space-4xl) 0;
}

.ds-section-alt {
  background-color: var(--surface-alt);
}

.ds-divider {
  height: 1px;
  background: var(--border);
  border: none;
  margin: var(--space-md) 0;
}

/* ============================================
   INPUTS
   ============================================ */

.ds-input {
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text-primary);
  width: 100%;
  transition: border-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
  outline: none;
}

.ds-input::placeholder {
  color: var(--text-light);
}

.ds-input:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.ds-input-with-icon {
  padding-left: 44px;
}

/* ============================================
   SKELETON LOADING
   ============================================ */

.ds-skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-alt) 25%,
    var(--border-light) 50%,
    var(--surface-alt) 75%
  );
  background-size: 200% 100%;
  animation: ds-shimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes ds-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
  .ds-h1 { font-size: 34px; }
  .ds-h2 { font-size: 28px; }
  .ds-section { padding: var(--space-3xl) 0; }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .ds-h1 { font-size: 28px; }
  .ds-h2 { font-size: 24px; }
  .ds-h3 { font-size: 20px; }
  .ds-section { padding: var(--space-2xl) 0; }
  .ds-container { padding: 0 var(--space-md); }

  .ds-btn-lg {
    padding: 14px 24px;
    font-size: 15px;
  }
}

@media (max-width: 480px) {
  .ds-h1 { font-size: 24px; }
  .ds-h2 { font-size: 22px; }
}

/* ============================================
   FOOTER
   ============================================ */

.ds-footer {
  background-color: var(--navy);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.ds-footer a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

.ds-footer a:hover {
  color: #FFFFFF;
}

.ds-footer-heading {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: var(--space-md);
}

/* ============================================
   HERO
   ============================================ */

.ds-hero {
  position: relative;
  width: 100%;
  min-height: 85vh;
  overflow: hidden;
  background: var(--navy-dark);
}

.ds-hero-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.ds-hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ds-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(18, 29, 51, 0.92) 0%,
    rgba(18, 29, 51, 0.5) 40%,
    rgba(18, 29, 51, 0.2) 100%
  );
}

.ds-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-3xl) var(--space-lg);
  max-width: var(--max-width);
  margin: 0 auto;
}

.ds-hero-title {
  font-family: var(--font-display);
  font-size: 52px;
  font-weight: 400;
  color: #FFFFFF;
  line-height: 1.15;
  margin-bottom: var(--space-sm);
}

.ds-hero-subtitle {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-lg);
}

@media (max-width: 768px) {
  .ds-hero { min-height: 70vh; }
  .ds-hero-title { font-size: 34px; }
  .ds-hero-subtitle { font-size: 16px; }
  .ds-hero-content { padding: var(--space-2xl) var(--space-md); }
}

/* ============================================
   SCROLLBAR
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}