/* ========================================
   房仲網站前台樣式
   ======================================== */

:root {
  --color-primary: #1a4d6d;
  --color-primary-dark: #123549;
  --color-primary-light: #2a6f9a;
  --color-accent: #c8956c;
  --color-accent-hover: #b07d54;
  --color-bg: #f5f7fa;
  --color-surface: #ffffff;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-success: #059669;
  --color-error: #dc2626;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --header-height: 64px;
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC",
    "Microsoft JhengHei", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.1rem;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

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

/* ---- Main layout ---- */
.main-content {
  flex: 1;
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.page-subtitle {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

/* ---- Filter panel ---- */
.filter-panel {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
}

.filter-panel h2 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
  align-items: end;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 77, 109, 0.15);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.filter-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-accent {
  background: var(--color-accent);
  color: white;
}

.btn-accent:hover {
  background: var(--color-accent-hover);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-block {
  width: 100%;
}

/* ---- Results bar ---- */
.results-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.results-count {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

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

.sort-select {
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  background: var(--color-surface);
}

/* ---- Property grid ---- */
.property-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.property-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: box-shadow 0.2s, transform 0.2s;
}

.property-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.property-card-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #dde3ea;
}

.property-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.property-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.25rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  color: white;
}

.badge-sale {
  background: var(--color-primary);
}

.badge-rent {
  background: var(--color-accent);
}

.property-card-body {
  padding: 1.25rem;
}

.property-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.property-card-location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.property-card-price {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.property-card-price .unit {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.property-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border);
}

.property-card-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px dashed var(--color-border);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.4;
}

.empty-state h3 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---- Detail page ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

.breadcrumb-sep {
  opacity: 0.5;
}

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 2rem;
  align-items: start;
}

.detail-main {
  min-width: 0;
}

/* Gallery */
.gallery {
  margin-bottom: 2rem;
}

.gallery-main {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #dde3ea;
  margin-bottom: 0.75rem;
}

.gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.gallery-thumbs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
}

.gallery-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 56px;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.7;
  transition: opacity 0.2s, border-color 0.2s;
}

.gallery-thumb.active,
.gallery-thumb:hover {
  opacity: 1;
  border-color: var(--color-primary);
}

.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Detail info */
.detail-header {
  margin-bottom: 1.5rem;
}

.detail-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.detail-location {
  color: var(--color-text-muted);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.detail-price-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.detail-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.detail-price .unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.detail-specs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 2rem;
}

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

.spec-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
}

.spec-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

.detail-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.detail-section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.detail-description {
  color: var(--color-text);
  line-height: 1.8;
  white-space: pre-line;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.feature-tag {
  padding: 0.35rem 0.75rem;
  background: var(--color-bg);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--color-text);
}

.map-placeholder {
  aspect-ratio: 16 / 7;
  background: linear-gradient(135deg, #e8eef3 0%, #d5dde6 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ---- Booking sidebar ---- */
.booking-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.booking-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

.booking-card h2 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.booking-card .subtitle {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

.booking-form .form-group {
  margin-bottom: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.form-required {
  color: var(--color-error);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.form-message {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  display: none;
}

.form-message.success {
  display: block;
  background: #ecfdf5;
  color: var(--color-success);
  border: 1px solid #a7f3d0;
}

.form-message.error {
  display: block;
  background: #fef2f2;
  color: var(--color-error);
  border: 1px solid #fecaca;
}

.agent-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-top: 1.25rem;
  margin-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.agent-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.agent-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.agent-phone {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.agent-phone a {
  color: var(--color-primary);
}

/* ---- Footer ---- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand .logo {
  color: white;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  font-size: 0.9rem;
  opacity: 0.8;
  line-height: 1.7;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: white;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.4rem;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.9rem;
}

.footer-col a:hover {
  color: white;
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ---- Not found ---- */
.not-found {
  text-align: center;
  padding: 4rem 2rem;
}

.not-found h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.not-found p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .detail-layout {
    grid-template-columns: 1fr;
  }

  .booking-sidebar {
    position: static;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding: 0 1rem;
  }

  .nav-links {
    gap: 1rem;
  }

  .main-content {
    padding: 1.25rem 1rem;
  }

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

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .detail-price {
    font-size: 1.5rem;
  }

  .detail-title {
    font-size: 1.35rem;
  }
}