/* ============================================
   翰騏物流 Honki Logistics — Design System v2
   Corporate B2B | 藍灰主色 | Sharp & Authoritative
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+TC:wght@400;500;600;700&display=swap');

/* --- CSS Variables --- */
:root {
  /* Palette */
  --color-primary: #1A3A5C;
  --color-primary-light: #234B73;
  --color-primary-dark: #122940;
  --color-secondary: #0D6B6E;
  --color-secondary-light: #10888C;
  --color-bg: #FFFFFF;
  --color-surface: #F5F7FA;
  --color-text: #1A1A1A;
  --color-text-secondary: #5A6B7F;
  --color-border: #DDE3EA;
  --color-white: #FFFFFF;

  /* Typography */
  --font-zh: 'Noto Sans TC', 'Microsoft JhengHei', sans-serif;
  --font-en: 'Inter', system-ui, sans-serif;
  --font-body: var(--font-zh);

  /* 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;

  /* Radius — sharp, 4-6px per spec */
  --radius-sm: 4px;
  --radius-md: 6px;

  /* Shadows — subtle only */
  --shadow-card: 0 1px 3px rgba(26, 58, 92, 0.08);
  --shadow-elevated: 0 2px 8px rgba(26, 58, 92, 0.10);

  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Numbers & English use Inter */
[data-lang="en"] body,
.lang-en,
.num, .stat, .counter {
  font-family: var(--font-en);
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-primary-dark);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

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

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  font-family: var(--font-zh);
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
  line-height: 1.4;
}

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
  border-color: var(--color-secondary);
}
.btn-secondary:hover {
  background: var(--color-secondary-light);
  color: var(--color-white);
}

/* --- Header / Nav --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-base);
}
.site-header.scrolled {
  box-shadow: var(--shadow-elevated);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-zh);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  white-space: nowrap;
}
.logo .logo-icon {
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: var(--space-sm) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

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

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: 0.8rem;
  font-weight: 500;
  font-family: var(--font-en);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.lang-toggle:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary-dark);
  transition: all var(--transition-base);
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-base);
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-menu-btn { display: flex; }
  .nav-actions .lang-toggle { font-size: 0.75rem; padding: 5px 8px; }
}

/* --- Sections --- */
.section {
  padding: var(--space-4xl) 0;
}

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

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-secondary);
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

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

.section-desc {
  max-width: 640px;
  font-size: 1.05rem;
  margin-bottom: var(--space-2xl);
}

/* --- Hero --- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 60vh;
  max-height: 80vh;
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  background: var(--color-primary-dark);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(18, 41, 64, 0.85) 0%, rgba(26, 58, 92, 0.75) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
  font-weight: 700;
}

.hero-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.1rem;
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

/* --- Cards --- */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}
.card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-elevated);
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.card h3 {
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
}

.card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* --- Card Grid --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card-grid-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card-grid-5 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }

@media (max-width: 768px) {
  .card-grid,
  .card-grid-2,
  .card-grid-3,
  .card-grid-4,
  .card-grid-5 {
    grid-template-columns: 1fr;
  }
}

/* --- Stats Bar --- */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  padding: var(--space-lg);
}

.stat-number {
  display: block;
  font-family: var(--font-en);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

@media (max-width: 768px) {
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
}

/* --- Service Cards --- */
.service-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}
.service-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-elevated);
  transform: translateY(-2px);
}
.service-card .service-icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}
.service-card h3 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

/* --- Logo Wall --- */
.logo-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  opacity: 0.6;
}

.logo-wall-item {
  height: 48px;
  filter: grayscale(1);
  transition: all var(--transition-base);
}
.logo-wall-item:hover {
  filter: grayscale(0);
  opacity: 1;
}

/* --- CTA Banner --- */
.cta-banner {
  background: var(--color-primary);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--space-xl);
}

.cta-banner .btn {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}
.cta-banner .btn:hover {
  background: var(--color-surface);
  color: var(--color-primary-dark);
}

/* --- Process Steps --- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  position: relative;
}

.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-md);
  font-family: var(--font-en);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: 50%;
}

.step-connector {
  position: absolute;
  top: 24px;
  left: calc(50% + 24px);
  width: calc(100% - 48px);
  height: 2px;
  background: var(--color-border);
}

.process-step:last-child .step-connector { display: none; }

@media (max-width: 768px) {
  .process-steps {
    grid-template-columns: 1fr;
  }
  .step-connector {
    left: 50%;
    top: 48px;
    width: 2px;
    height: var(--space-lg);
    transform: translateX(-50%);
  }
}

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

.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-info {
  padding: var(--space-xl);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

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

.contact-info-item .info-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.contact-info-item h4 {
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.contact-info-item p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Footer --- */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-2xl) 0;
}

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

.footer-col h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.footer-col p,
.footer-col a {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 2;
  display: block;
}
.footer-col a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --- Page Hero (inner pages) --- */
.page-hero {
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-2xl);
  background: var(--color-primary);
  text-align: center;
}
.page-hero h1 {
  color: var(--color-white);
}
.page-hero p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: var(--space-sm) auto 0;
}

/* --- Tables --- */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  font-weight: 600;
  color: var(--color-primary-dark);
  background: var(--color-surface);
}

.data-table tr:hover td {
  background: var(--color-surface);
}

/* --- Timeline --- */
.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-xl);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-white);
}

.timeline-year {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 4px;
}

.timeline-item h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.timeline-item p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* --- Badges (subtle only) --- */
.badge {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-en);
  border-radius: var(--radius-sm);
}

.badge-primary {
  background: rgba(26, 58, 92, 0.08);
  color: var(--color-primary);
}

.badge-secondary {
  background: rgba(13, 107, 110, 0.08);
  color: var(--color-secondary);
}

/* --- Case Cards --- */
.case-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
}
.case-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-elevated);
}

.case-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-surface);
}

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

.case-card-body .badge {
  margin-bottom: var(--space-sm);
}

.case-card-body h3 {
  margin-bottom: var(--space-xs);
}

/* --- Talent Type Grid --- */
.talent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
}

.talent-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}
.talent-card:hover {
  border-color: var(--color-primary);
}

.talent-card .talent-icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.talent-card h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.talent-card p {
  font-size: 0.8rem;
  margin-bottom: 0;
}

/* --- Compliance Grid --- */
.compliance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.compliance-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.compliance-card .compliance-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  color: var(--color-secondary);
}

.compliance-card h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.compliance-card p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

/* --- Map --- */
.map-container {
  width: 100%;
  height: 360px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
}

/* --- Utility --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-0 { margin-bottom: 0; }
.mb-lg { margin-bottom: var(--space-lg); }

/* --- Bilingual --- */
[data-lang-en] { display: none; }

html[lang="en"] [data-lang-zh] { display: none; }
html[lang="en"] [data-lang-en] { display: revert; }

/* --- Skip to main --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9999;
  padding: 8px 16px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}
.skip-link:focus { top: 8px; }

/* --- Responsive images --- */
img { max-width: 100%; height: auto; }