/* ============================================
   匠心裝修工程 — No-Slop-UI Design System
   Cloud Canvas (light) + Void Space (dark)
   Noto Sans TC + Bootstrap 5.3
   ============================================ */

/* --- Design Tokens --- */
:root {
  /* Cloud Canvas (Light) */
  --bg: #fafafa;
  --surface: #ffffff;
  --surface-hover: #f5f5f5;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-text: #ffffff;
  --secondary: #7c3aed;
  --accent: #dc2626;
  --text: #0f172a;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.08);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --font: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --transition: 150ms ease;
  --nav-height: 64px;
  --container-max: 1140px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
}

[data-theme="dark"] {
  /* Void Space (Dark) */
  --bg: #0d1117;
  --surface: #161b22;
  --surface-hover: #1c2333;
  --border: #30363d;
  --border-strong: #484f58;
  --primary: #58a6ff;
  --primary-hover: #79c0ff;
  --primary-text: #0d1117;
  --secondary: #79c0ff;
  --accent: #f78166;
  --text: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 2px 8px rgba(0,0,0,0.4);
}

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

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

body {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
  min-height: 100vh;
}

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

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  color: var(--text);
}

h1 { font-size: clamp(1.75rem, 1.5rem + 2vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 1.25rem + 1.5vw, 2rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

.section-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: var(--spacing-sm);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

.section-desc {
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: var(--spacing-xl);
}

/* --- Navbar --- */
.navbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text) !important;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar-brand .brand-icon {
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-text);
  font-size: 1rem;
}

.nav-link {
  color: var(--text-secondary) !important;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md) !important;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text) !important;
  background: var(--surface-hover);
}

/* Theme toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-left: var(--spacing-sm);
  transition: background var(--transition), color var(--transition);
}

.theme-toggle:hover {
  background: var(--surface-hover);
  color: var(--text);
}

/* --- Hero (Full-Screen Background) --- */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.hero-content {
  max-width: 600px;
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-visual {
  position: absolute;
  right: 0;
  top: 0;
  width: 45%;
  height: 100%;
  background: var(--surface-hover);
  overflow: hidden;
}

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

/* --- Buttons --- */
.btn {
  font-family: var(--font);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  line-height: 1.4;
  text-decoration: none;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

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

.btn-sm {
  padding: 6px 16px;
  font-size: 0.875rem;
}

/* --- Cards --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.card-img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--surface-hover);
}

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

.card-title {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-sm);
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.card-meta {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

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

.section-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

/* --- Stats --- */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-xl);
}

.stat-item {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* --- Service Cards --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xl);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--surface-hover);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.service-card h3 {
  margin-bottom: var(--spacing-sm);
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.service-price {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
}

.service-price small {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* --- Before/After Section --- */
.before-after-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
  gap: var(--spacing-lg);
}

.before-after-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
}

.before-after-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.before-after-label {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  background: var(--surface);
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.before-after-card .after-label {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

/* --- Blog / News --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--spacing-lg);
}

.blog-card .card-body {
  display: flex;
  flex-direction: column;
}

.blog-card .card-text {
  flex: 1;
}

.blog-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

/* --- Pagination --- */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  list-style: none;
  padding: 0;
  margin: var(--spacing-xl) 0 0;
}

.page-link {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-md);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.page-link:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--border-strong);
}

.page-link.active {
  background: var(--primary);
  color: var(--primary-text);
  border-color: var(--primary);
}

.page-link.disabled {
  color: var(--text-muted);
  pointer-events: none;
  opacity: 0.5;
}

/* --- Contact Form --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
}

.contact-info-item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info-icon {
  width: 40px;
  height: 40px;
  background: var(--surface-hover);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.125rem;
}

.contact-info-item h4 {
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-xs);
}

.contact-info-item p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font);
  font-size: 0.9375rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.5;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

[data-theme="dark"] .form-control:focus {
  box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.2);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
}

.form-control::placeholder {
  color: var(--text-muted);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

/* --- Thank You Page --- */
.thank-you {
  min-height: calc(100vh - var(--nav-height) - 200px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.thank-you-content {
  max-width: 500px;
  padding: var(--spacing-2xl);
}

.thank-you-icon {
  width: 64px;
  height: 64px;
  background: var(--surface-hover);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-size: 1.75rem;
}

.thank-you h1 {
  margin-bottom: var(--spacing-md);
}

.thank-you p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-xl);
}

.footer-brand {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.footer-about {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-md);
}

.footer-heading {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text);
}

.footer-links {
  list-style: none;
  padding: 0;
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --- Breadcrumb --- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  list-style: none;
  padding: var(--spacing-md) 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

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

.breadcrumb .separator { color: var(--border-strong); }

/* --- About Page --- */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

.about-intro img {
  border-radius: var(--radius-md);
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--surface-hover);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: var(--spacing-lg);
}

.value-card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.value-icon {
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
}

.value-card h3 {
  margin-bottom: var(--spacing-sm);
}

.value-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

/* --- Logo Grid --- */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--spacing-lg);
  align-items: center;
}

.logo-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 3 / 1;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9375rem;
}

/* --- Accessibility --- */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-md);
  background: var(--primary);
  color: var(--primary-text);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  z-index: 10000;
  font-size: 0.875rem;
  transition: top 150ms ease;
}

.skip-link:focus {
  top: var(--spacing-sm);
}

/* --- Service Detail Page --- */
.service-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: var(--spacing-lg);
}

.service-detail-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.service-detail-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--surface-hover);
}

.service-detail-body {
  padding: var(--spacing-lg);
}

.service-detail-body h3 {
  margin-bottom: var(--spacing-sm);
}

.service-detail-body .price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
}

.service-detail-body .features {
  list-style: none;
  padding: 0;
}

.service-detail-body .features li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.service-detail-body .features li:last-child { border-bottom: none; }

.service-detail-body .features li::before {
  content: "✓";
  color: var(--primary);
  font-weight: 700;
  font-size: 0.875rem;
}

/* --- Responsive --- */
@media (max-width: 991.98px) {
  .hero-visual { display: none; }
  .hero { text-align: center; }
  .hero-content { max-width: 100%; }
  .hero-actions { justify-content: center; }

  .about-intro { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767.98px) {
  :root {
    --spacing-3xl: 48px;
    --spacing-2xl: 36px;
  }

  .section { padding: var(--spacing-2xl) 0; }

  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); }

  .before-after-grid { grid-template-columns: 1fr; }

  .navbar .nav-links-desktop { display: none; }
}

@media (max-width: 575.98px) {
  .stats-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .blog-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .service-detail-grid { grid-template-columns: 1fr; }
}