/* ===== CSS Variables / Themes ===== */
:root {
  --accent: #1a73e8;
  --accent-hover: #1557b0;
  --bg-primary: #ffffff;
  --bg-secondary: #f5f7fa;
  --bg-card: #ffffff;
  --bg-nav: #1a1a2e;
  --bg-footer: #1a1a2e;
  --text-primary: #1a1a2e;
  --text-secondary: #555555;
  --text-nav: #ffffff;
  --text-footer: #aaaaaa;
  --border-color: #e0e0e0;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 6px 24px rgba(0,0,0,0.15);
  --transition-speed: 0.3s;
}

/* Dark Theme */
[data-theme="dark"] {
  --accent: #283593;
  --accent-hover: #1A237E;
  --bg-primary: #121212;
  --bg-secondary: #1e1e1e;
  --bg-card: #2a2a2a;
  --bg-nav: #0d0d0d;
  --bg-footer: #0d0d0d;
  --text-primary: #e0e0e0;
  --text-secondary: #aaaaaa;
  --text-nav: #ffffff;
  --text-footer: #888888;
  --border-color: #3a3a3a;
  --shadow: 0 2px 12px rgba(0,0,0,0.3);
}

/* Blue Theme */
[data-theme="blue"] {
  --accent: #0d47a1;
  --accent-hover: #082d6b;
  --bg-primary: #e3f2fd;
  --bg-secondary: #bbdefb;
  --bg-card: #ffffff;
  --bg-nav: #0d47a1;
  --bg-footer: #0d47a1;
  --text-primary: #0d47a1;
  --text-secondary: #1565c0;
  --text-nav: #ffffff;
  --text-footer: #bbdefb;
  --border-color: #90caf9;
}

/* Gray Theme */
[data-theme="gray"] {
  --accent: #5a5a5a;
  --accent-hover: #3a3a3a;
  --bg-primary: #efecec;
  --bg-secondary: #e0ddda;
  --bg-card: #ffffff;
  --bg-nav: #5a5a5a;
  --bg-footer: #5a5a5a;
  --text-primary: #3a3a3a;
  --text-secondary: #5a5a5a;
  --text-nav: #ffffff;
  --text-footer: #e0ddda;
  --border-color: #c5c2bf;
}

/* Silver Theme (#F6F7F9) */
[data-theme="silver"] {
  --accent: #37474F;
  --accent-hover: #263238;
  --bg-primary: #F6F7F9;
  --bg-secondary: #ebedf0;
  --bg-card: #ffffff;
  --bg-nav: #37474F;
  --bg-footer: #37474F;
  --text-primary: #1A1D22;
  --text-secondary: #555555;
  --text-nav: #ffffff;
  --text-footer: #c8cdd3;
  --border-color: #d8dbe0;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
}

/* Charcoal Theme (#1A1D22) */
[data-theme="charcoal"] {
  --accent: #4a90d9;
  --accent-hover: #3a7bc8;
  --bg-primary: #1A1D22;
  --bg-secondary: #24282e;
  --bg-card: #2e3238;
  --bg-nav: #111317;
  --bg-footer: #111317;
  --text-primary: #e0e2e5;
  --text-secondary: #9a9da1;
  --text-nav: #ffffff;
  --text-footer: #6a6d72;
  --border-color: #3a3e44;
  --shadow: 0 2px 12px rgba(0,0,0,0.4);
}

/* Navy Theme (#195496) */
[data-theme="navy"] {
  --accent: #5b9bd5;
  --accent-hover: #4a88c2;
  --bg-primary: #0e2f5c;
  --bg-secondary: #133d73;
  --bg-card: #1a4a8a;
  --bg-nav: #091e3e;
  --bg-footer: #091e3e;
  --text-primary: #e0e8f5;
  --text-secondary: #a8bdd8;
  --text-nav: #ffffff;
  --text-footer: #7a9cc6;
  --border-color: #2a5a9a;
  --shadow: 0 2px 12px rgba(0,0,0,0.35);
}

/* Crimson Theme (#921818) */
[data-theme="crimson"] {
  --accent: #c0392b;
  --accent-hover: #a93226;
  --bg-primary: #5c1010;
  --bg-secondary: #731616;
  --bg-card: #8a2020;
  --bg-nav: #3e0a0a;
  --bg-footer: #3e0a0a;
  --text-primary: #f5e0e0;
  --text-secondary: #d8a8a8;
  --text-nav: #ffffff;
  --text-footer: #c67a7a;
  --border-color: #9a2a2a;
  --shadow: 0 2px 12px rgba(0,0,0,0.35);
}

/* Classic Theme - Warm Beige */
[data-theme="classic"] {
  --accent: #C45B5B;
  --accent-hover: #A84545;
  --bg-primary: #F5F0EB;
  --bg-secondary: #EDE6DD;
  --bg-card: #FFFFFF;
  --bg-nav: #2C2420;
  --bg-footer: #2C2420;
  --text-primary: #2C2420;
  --text-secondary: #6B5D50;
  --text-nav: #ffffff;
  --text-footer: #E8D5D0;
  --border-color: #D5CBC0;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* Warm Theme - Brown & Orange */
[data-theme="warm"] {
  --accent: #E87722;
  --accent-hover: #C4611A;
  --bg-primary: #FDF6EC;
  --bg-secondary: #F5EBDA;
  --bg-card: #FFFFFF;
  --bg-nav: #A0722A;
  --bg-footer: #7A5A20;
  --text-primary: #3E2E1E;
  --text-secondary: #7A6A55;
  --text-nav: #ffffff;
  --text-footer: #D4C4A8;
  --border-color: #E0D5C0;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

/* Mocha Theme - Dark Brown & Orange */
/* D4842A */
[data-theme="mocha"] {
  --accent: #895a3e;
  --accent-hover: #895a3e;
  --section-header-bg: #d97c2e;
  --bg-primary: #fcf8ec;
  --bg-secondary: #F3EBE0;
  --bg-card: #FFFFFF;
  --bg-nav: #fcf8ec;
  --bg-footer: #4A3A28;
  --text-primary: #3E2E1E;
  --text-secondary: #7A6A55;
  --text-nav: #895a3e;
  --text-footer: #B8A890;
  --border-color: #DDD2C2;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
}
[data-theme="mocha"] body {
  background: rgb(246, 240, 232);
}
[data-theme="mocha"] .product-info {
  background: #895a3e;
}
[data-theme="mocha"] .product-info .name {
  color: #fcf8ec;
}

/* ===== Reset / Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: background var(--transition-speed), color var(--transition-speed);
  line-height: 1.6;
}
a { text-decoration: none; color: inherit; }

/* ===== Top Bar ===== */
.top-bar {
  background: var(--bg-nav);
  padding: 10px 40px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  transition: background var(--transition-speed);
}

/* ===== Navbar ===== */
.navbar {
  background: var(--bg-nav);
  padding: 0 40px;
  display: flex;
  align-items: center;
  border-bottom: 3px solid var(--accent);
  transition: background var(--transition-speed), border-color var(--transition-speed);
}
.navbar .logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--accent);
  margin-right: 30px;
  letter-spacing: 1px;
}
.navbar .logo span { color: var(--text-nav); }
.nav-links { display: flex; gap: 0; flex: 1; }
.nav-links a {
  padding: 14px 18px;
  color: var(--text-nav);
  font-size: 14px;
  font-weight: 500;
  transition: background var(--transition-speed), color var(--transition-speed);
}
.nav-links a:hover, .nav-links a.active {
  background: var(--accent);
  color: #fff;
}
.nav-links .lang-toggle {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: background var(--transition-speed), border-color var(--transition-speed);
}
.nav-links .lang-toggle:hover {
  background: var(--accent);
  border-color: var(--accent);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  max-width: 1200px;
  margin: 16px auto;
  padding: 0 20px;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb a {
  color: var(--accent);
  transition: color var(--transition-speed);
}
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-footer);
  color: #ffffff;
  padding: 40px 60px;
  font-size: 14px;
  margin-top: 40px;
  border-top: 3px solid var(--accent);
  transition: background var(--transition-speed), border-color var(--transition-speed);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 40px;
}
.footer-col {
  flex: 0 0 calc(33.333% - 27px);
  min-width: 220px;
}
.footer-col-title {
  font-weight: 700;
  font-size: 15px;
  color: #ffffff;
  margin-bottom: 12px;
}
.footer-col p {
  margin: 4px 0;
  line-height: 1.6;
  font-weight: 600;
}
.footer-col a {
  color: #ffffff;
  text-decoration: none;
}
.footer-col a:hover {
  text-decoration: underline;
}
.footer-qr-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-qr-list li {
  position: relative;
  margin-bottom: 10px;
}
.footer-qr-list .qr-name {
  font-weight: 600;
  font-size: 14px;
  color: #ffffff;
  cursor: pointer;
  border-bottom: 1px dashed rgba(255,255,255,0.4);
  padding-bottom: 2px;
  transition: color 0.2s;
}
.footer-qr-list .qr-name:hover {
  color: var(--accent);
}
.footer-qr-list .qr-popup {
  display: none;
  position: absolute;
  bottom: calc(100% + 10px);
  /* left: 50%; */
  left: 40px;
  transform: translateX(-50%);
  background: var(--bg-card);
  border-radius: 10px;
  padding: 8px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  z-index: 100;
  pointer-events: none;
}
.footer-qr-list .qr-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: #ffffff;
}
.footer-qr-list li:hover .qr-popup {
  display: block;
}
.footer-qr-list .qr-popup img {
  width: 180px;
  height: 180px;
  border-radius: 6px;
  display: block;
}
.footer-jd-link {
  margin-top: 16px;
}
.footer-jd-link a {
  font-weight: 700;
  font-size: 14px;
  color: #ffffff;
  text-decoration: none;
  border-bottom: 1px dashed rgba(255,255,255,0.4);
  transition: color 0.2s;
}
.footer-jd-link a:hover {
  color: var(--accent);
  text-decoration: none;
}
.footer-social {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: flex-end;
}
.footer-social a {
  color: #ffffff;
  transition: color 0.2s;
}
.footer-social a:hover {
  color: var(--accent);
}
a.mailto-disabled {
  pointer-events: none;
  cursor: default;
  text-decoration: none !important;
  color: inherit !important;
}