/* ==========================================================================
   CHANGAN DIGITAL MANUALS — HOME PORTAL STYLESHEET
   Clean, modern automotive design system with dark/light harmony & RTL support
   ========================================================================== */

:root {
  --primary: #2787A6;
  --primary-hover: #1f6d87;
  --primary-light: rgba(39, 135, 166, 0.12);
  --primary-border: rgba(39, 135, 166, 0.35);
  --accent: #E0533C;
  --accent-gold: #f59e0b;
  --bg-page: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-alt: #f1f5f9;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --header-bg: rgba(255, 255, 255, 0.94);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 6px 16px -2px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 32px -4px rgba(15, 23, 42, 0.12);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

[dir="rtl"] {
  --font-family: "Vazirmatn", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* --------------------------------------------------------------------------
   HEADER
   -------------------------------------------------------------------------- */
.home-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: inherit;
}

.brand-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.brand-text-col {
  display: flex;
  flex-direction: column;
}

.brand-title-main {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1.2;
}

.brand-title-sub {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

/* Language Dropdown in Header */
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-dropdown-wrapper {
  position: relative;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.lang-btn:hover {
  background: var(--bg-card-alt);
  border-color: var(--primary);
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 170px;
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 1000;
}

[dir="rtl"] .lang-menu {
  right: auto;
  left: 0;
}

.lang-menu.open {
  display: flex;
  animation: dropdownFadeIn 0.18s ease;
}

@keyframes dropdownFadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.lang-option-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  background: none;
  border: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-main);
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
  width: 100%;
  font-family: inherit;
}

[dir="rtl"] .lang-option-btn {
  text-align: right;
}

.lang-option-btn:hover {
  background: var(--bg-card-alt);
  color: var(--primary);
}

.lang-option-btn.active {
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
}

/* --------------------------------------------------------------------------
   HERO SECTION
   -------------------------------------------------------------------------- */
.home-hero-section {
  padding: 56px 24px 36px;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(39, 135, 166, 0.08) 0%, transparent 70%);
}

.hero-content-wrap {
  max-width: 820px;
  margin: 0 auto;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  background: var(--primary-light);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.hero-heading {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 16px;
}

.hero-description {
  font-size: 18px;
  color: var(--text-muted);
  line-height: 1.6;
  font-weight: 400;
  max-width: 700px;
  margin: 0 auto 30px;
}

/* --------------------------------------------------------------------------
   VEHICLES CATALOG GRID
   -------------------------------------------------------------------------- */
.vehicles-section {
  max-width: 960px;
  margin: 0 auto;
  padding: 20px 24px 60px;
  width: 100%;
  flex: 1;
}

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 16px;
}

.section-title {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-main);
}

.section-counter {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
}

.vehicles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 32px;
}

/* --------------------------------------------------------------------------
   CAR CARD
   -------------------------------------------------------------------------- */
.car-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}

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

.car-card.active-model {
  border-color: var(--primary);
  box-shadow: 0 8px 24px -4px rgba(39, 135, 166, 0.2);
}

/* Photo Container */
.car-photo-container {
  position: relative;
  width: 100%;
  height: 230px;
  background: #0f172a;
  overflow: hidden;
}

.car-photo-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.car-card:hover .car-photo-img {
  transform: scale(1.04);
}

.car-status-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  z-index: 2;
}

[dir="rtl"] .car-status-badge {
  right: auto;
  left: 14px;
}

.badge-active {
  background: rgba(34, 197, 94, 0.92);
  color: #ffffff;
}

.badge-upcoming {
  background: rgba(100, 116, 139, 0.92);
  color: #ffffff;
}

/* Car Details under Photo */
.car-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.car-name-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.3;
}

.car-sub-label {
  font-size: 14px;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 14px;
}

.car-specs-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.spec-chip {
  background: var(--bg-card-alt);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.car-card-actions {
  margin-top: auto;
}

/* BIG SELECTION BUTTON */
.btn-car-select {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 16px 24px; /* Big button */
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.22s ease;
  font-family: inherit;
  border: none;
  box-shadow: var(--shadow-sm);
}

.btn-car-select.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #1d728e 100%);
  color: #ffffff;
}

.btn-car-select.btn-primary:hover {
  background: linear-gradient(135deg, #1f6d87 0%, #17576d 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px -2px rgba(39, 135, 166, 0.4);
}

.btn-car-select.btn-disabled {
  background: var(--bg-card-alt);
  color: var(--text-muted);
  border: 1px dashed var(--border-color);
  cursor: not-allowed;
  opacity: 0.85;
}

/* --------------------------------------------------------------------------
   FEATURES ROW
   -------------------------------------------------------------------------- */
.features-section {
  background: var(--bg-card);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 48px 24px;
}

.features-wrap {
  max-width: 1280px;
  margin: 0 auto;
}

.features-title {
  text-align: center;
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 36px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.feature-box {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--bg-page);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: transform 0.2s ease;
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: var(--primary-border);
}

.feature-icon {
  font-size: 32px;
  margin-bottom: 14px;
}

.feature-heading {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   FOOTER
   -------------------------------------------------------------------------- */
.home-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 36px 24px;
  font-size: 14px;
  text-align: center;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-hotline {
  color: #38bdf8;
  font-weight: 600;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   FIRST-TIME VISITOR LANGUAGE MODAL
   Requirement:
   - Question must be in English
   - 3 options: Chinese, English, Persian
   - Modal pops up for first time visitors
   -------------------------------------------------------------------------- */
.lang-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.lang-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.lang-modal-dialog {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  padding: 36px 32px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
  text-align: center;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lang-modal-backdrop.open .lang-modal-dialog {
  transform: translateY(0) scale(1);
}

.lang-modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* English question as strictly required by prompt */
.lang-modal-question {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.3;
}

.lang-modal-subtext {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.lang-modal-options-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.lang-choice-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--bg-card-alt);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.lang-choice-btn:hover {
  border-color: var(--primary);
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.lang-choice-btn.selected {
  border-color: var(--primary);
  background: var(--primary-light);
}

.lang-choice-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lang-flag {
  font-size: 28px;
  line-height: 1;
}

.lang-names-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.lang-name-en {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.lang-name-native {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.lang-choice-check {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: transparent;
  transition: all 0.2s ease;
}

.lang-choice-btn:hover .lang-choice-check,
.lang-choice-btn.selected .lang-choice-check {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
}

.lang-modal-footer-note {
  font-size: 12px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   RESPONSIVE DESIGN
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .home-header {
    padding: 0 16px;
    height: 64px;
  }
  
  .brand-title-main {
    font-size: 16px;
  }
  
  .hero-heading {
    font-size: 28px;
  }
  
  .hero-description {
    font-size: 16px;
  }
  
  .vehicles-grid {
    grid-template-columns: 1fr;
  }
  
  .lang-modal-dialog {
    padding: 28px 20px;
  }
  
  .lang-modal-question {
    font-size: 22px;
  }
}