/* ============================================================
   Zhuhe Careers (International) — Site Styles
   ============================================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  color: var(--text-primary);
  background: var(--bg-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

h1, h2, h3, h4 { line-height: 1.3; color: var(--text-primary); }
h1 { font-size: 2rem; margin-bottom: 1rem; }
h2 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
p { margin-bottom: 0.75rem; }

button { cursor: pointer; font-family: inherit; }

/* === Theme System — CSS Variables === */

/* Global Teal (default — international brand color) */
:root, [data-theme="global"] {
  --primary: #0F6E56;
  --primary-dark: #085041;
  --primary-light: #5DCAA5;
  --accent: #E1F5EE;
  --bg-main: #f8faf9;
  --bg-alt: #e8f2ed;
  --text-primary: #2C3E50;
  --text-secondary: #5d6d7e;
  --nav-bg: #0F6E56;
  --nav-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #bde0d5;
  --card-shadow: rgba(15, 110, 86, 0.08);
  --btn-bg: #0F6E56;
  --btn-text: #ffffff;
  --btn-hover: #085041;
  --edit-border: #0F6E56;
  --tag-bg: #E1F5EE;
  --tag-text: #0F6E56;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --hero-gradient: linear-gradient(135deg, #1D9E75 0%, #0F6E56 100%);
}

/* Minimal Gray */
[data-theme="minimal"] {
  --primary: #555555;
  --primary-dark: #333333;
  --primary-light: #888888;
  --accent: #eeeeee;
  --bg-main: #ffffff;
  --bg-alt: #f5f5f5;
  --text-primary: #333333;
  --text-secondary: #777777;
  --nav-bg: #555555;
  --nav-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #dddddd;
  --card-shadow: rgba(85, 85, 85, 0.08);
  --btn-bg: #555555;
  --btn-text: #ffffff;
  --btn-hover: #333333;
  --edit-border: #555555;
  --tag-bg: #eeeeee;
  --tag-text: #555555;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --hero-gradient: linear-gradient(135deg, #666 0%, #444 100%);
}

/* Aurora Purple */
[data-theme="aurora"] {
  --primary: #534AB7;
  --primary-dark: #3C3489;
  --primary-light: #AFA9EC;
  --accent: #EEEDFE;
  --bg-main: #f8f8fe;
  --bg-alt: #ecebf6;
  --text-primary: #2C3E50;
  --text-secondary: #5d6d7e;
  --nav-bg: #534AB7;
  --nav-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #CECBF6;
  --card-shadow: rgba(83, 74, 183, 0.08);
  --btn-bg: #534AB7;
  --btn-text: #ffffff;
  --btn-hover: #3C3489;
  --edit-border: #534AB7;
  --tag-bg: #EEEDFE;
  --tag-text: #534AB7;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --hero-gradient: linear-gradient(135deg, #7F77DD 0%, #534AB7 100%);
}

/* Sunset Red */
[data-theme="sunset"] {
  --primary: #c0392b;
  --primary-dark: #922b21;
  --primary-light: #e74c3c;
  --accent: #fadbd8;
  --bg-main: #ffffff;
  --bg-alt: #fdf2f0;
  --text-primary: #333333;
  --text-secondary: #666666;
  --nav-bg: #c0392b;
  --nav-text: #ffffff;
  --card-bg: #ffffff;
  --card-border: #f5b7b1;
  --card-shadow: rgba(192, 57, 43, 0.08);
  --btn-bg: #c0392b;
  --btn-text: #ffffff;
  --btn-hover: #922b21;
  --edit-border: #c0392b;
  --tag-bg: #fadbd8;
  --tag-text: #c0392b;
  --success: #27ae60;
  --warning: #f39c12;
  --danger: #e74c3c;
  --hero-gradient: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
}

/* === Navigation === */
.main-nav {
  background: var(--nav-bg);
  color: var(--nav-text);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 1rem;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--nav-text);
  font-weight: 600;
  font-size: 1.1rem;
  white-space: nowrap;
}

.logo-img { height: 40px; width: auto; }

.nav-links {
  display: flex;
  gap: 0.75rem;
  flex: 1;
  justify-content: center;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.5rem 1rem;
  color: var(--nav-text);
  border-radius: 6px;
  font-size: 0.9rem;
  transition: background 0.2s;
  white-space: nowrap;
}

.nav-link:hover { background: rgba(255,255,255,0.15); }
.nav-link.active { background: rgba(255,255,255,0.25); font-weight: 600; }
.nav-icon { font-size: 1rem; }

/* Language toggle button in nav */
.lang-toggle {
  background: rgba(255,255,255,0.2);
  color: var(--nav-text);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 6px;
  padding: 0.3rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.2s;
  white-space: nowrap;
}
.lang-toggle:hover { background: rgba(255,255,255,0.35); }

.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--nav-text);
  font-size: 1.5rem;
  padding: 0.25rem;
  line-height: 1;
}

/* === Hero Section === */
.hero-section {
  background: var(--hero-gradient);
  color: #ffffff;
  padding: 4rem 2rem;
  text-align: center;
}

.hero-section h1 {
  color: #ffffff;
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero-section p {
  color: rgba(255,255,255,0.9);
  font-size: 1.2rem;
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

.hero-btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: rgba(255,255,255,0.9);
  color: var(--primary-dark);
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.2s, background 0.2s;
}

.hero-btn:hover { transform: translateY(-2px); background: #ffffff; }

/* === Content Area === */
.content-area {
  flex: 1;
  padding: 2rem 1rem;
}

.section-title {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
  color: var(--primary-dark);
}

/* === Layout Switching === */

[data-layout="single"] .content-area {
  max-width: 800px;
  margin: 0 auto;
}
[data-layout="single"] .card-grid {
  display: block;
}
[data-layout="single"] .card-item {
  margin-bottom: 1.5rem;
}

[data-layout="double"] .content-area {
  max-width: 1100px;
  margin: 0 auto;
}
[data-layout="double"] .card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
[data-layout="double"] .card-item {
  margin-bottom: 0;
}

[data-layout="card"] .content-area {
  max-width: 1200px;
  margin: 0 auto;
}
[data-layout="card"] .card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* === Cards === */
.card-item {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

[data-layout="card"] .card-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px var(--card-shadow);
}

.card-item h3 { margin-bottom: 0.5rem; color: var(--primary); }
.card-item p { color: var(--text-secondary); font-size: 0.95rem; }

.card-placeholder {
  width: 100%;
  height: 160px;
  background: var(--bg-alt);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 2rem;
  color: var(--primary-light);
  overflow: hidden;
}

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

.card-tags {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

.tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  display: inline-block;
}

/* === Filter / Tab === */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.4rem 1rem;
  background: var(--bg-alt);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

/* === Star Rating === */
.star-rating {
  color: #f1c40f;
  font-size: 1.1rem;
  letter-spacing: 2px;
}
.star-rating .empty { color: #ddd; }

/* === Severity Tags === */
.severity-tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
}
.severity-high { background: #fadbd8; color: #c0392b; }
.severity-medium { background: #fdebd0; color: #e67e22; }
.severity-low { background: #d5f5e3; color: #27ae60; }

/* === Expandable Content === */
.expandable-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.expandable-content.open {
  max-height: 500px;
}
.expand-btn {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: var(--bg-alt);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--primary);
  cursor: pointer;
  transition: background 0.2s;
}
.expand-btn:hover { background: var(--accent); }

/* === Stats Grid === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}
.stat-item {
  background: var(--bg-alt);
  border-radius: 10px;
  padding: 1.5rem;
  text-align: center;
}
.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}
.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* === Settings Panel === */
.settings-toggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 48px;
  height: 48px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  z-index: 1100;
  transition: transform 0.2s;
}
.settings-toggle:hover { transform: scale(1.1); }
.settings-icon { display: flex; align-items: center; justify-content: center; }

.settings-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 1200;
  justify-content: center;
  align-items: center;
}
.settings-overlay.open { display: flex; }

.settings-modal {
  background: var(--bg-main);
  border-radius: 16px;
  padding: 2rem;
  width: 90%;
  max-width: 420px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  max-height: 90vh;
  overflow-y: auto;
}
.settings-modal h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--primary);
}
.settings-group {
  margin-bottom: 1.5rem;
}
.settings-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}
.theme-options, .layout-options, .lang-options {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.theme-btn, .layout-btn, .lang-btn {
  padding: 0.5rem 1rem;
  border: 2px solid var(--card-border);
  border-radius: 8px;
  background: var(--bg-alt);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}
.theme-btn:hover, .layout-btn:hover, .lang-btn:hover { border-color: var(--primary); }
.theme-btn.active-theme, .layout-btn.active-layout, .lang-btn.active-lang {
  border-color: var(--primary);
  background: var(--accent);
  font-weight: 600;
}
.reset-btn {
  display: block;
  width: 100%;
  padding: 0.5rem;
  background: var(--danger);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 0.9rem;
  margin-top: 1rem;
  cursor: pointer;
}
.reset-btn:hover { opacity: 0.9; }
.close-btn {
  display: block;
  width: 100%;
  padding: 0.5rem;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 0.9rem;
  margin-top: 0.5rem;
  cursor: pointer;
}

/* === Footer === */
#site-footer {
  background: var(--nav-bg);
  color: var(--nav-text);
  padding: 1.5rem;
  text-align: center;
  margin-top: auto;
}
.footer-content { max-width: 1200px; margin: 0 auto; }
.footer-content p { color: rgba(255,255,255,0.8); font-size: 0.85rem; margin-bottom: 0.5rem; }

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: #ffffff; }

/* Cross-site link — subtle, low-risk */
.cross-site-link a {
  color: rgba(255,255,255,0.6);
  font-size: 0.85rem;
  transition: color 0.2s;
}
.cross-site-link a:hover { color: #ffffff; }

/* Network label */
.network-label {
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  margin-top: 0.3rem;
}

/* === Toast === */
.toast {
  position: fixed;
  top: 70px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--success);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 0.95rem;
  z-index: 1400;
  animation: slideDown 0.3s ease, fadeOut 2s 1s forwards;
}
@keyframes slideDown {
  from { transform: translateX(-50%) translateY(-20px); opacity: 0; }
  to { transform: translateX(-50%) translateY(0); opacity: 1; }
}
@keyframes fadeOut {
  from { opacity: 1; }
  to { opacity: 0; }
}

/* === Responsive === */
@media (max-width: 767px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    padding: 0.5rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  }
  .nav-links.mobile-open { display: flex; }
  .nav-link { padding: 0.6rem 1rem; }
  .nav-toggle { display: block; }
  .lang-toggle { order: -1; margin-right: 0.5rem; }

  .hero-section { padding: 2rem 1rem; }
  .hero-section h1 { font-size: 1.8rem; }
  .content-area { padding: 1rem 0.5rem; }

  [data-layout="double"] .card-grid,
  [data-layout="card"] .card-grid {
    grid-template-columns: 1fr;
  }

  .settings-modal { width: 95%; padding: 1.5rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .content-area { padding: 2rem 1rem; }
}