/* ===== CSS VARIABLES ===== */
:root {
  --bg: #0a0a0a;
  --surface: #111111;
  --surface2: #181818;
  --text: #f0f0f0;
  --text-muted: #666;
  --border: #222222;
  --nav-bg: #000000;
  --hero-bg: #000000;
  --btn-bg: #ffffff;
  --btn-text: #000000;
  --btn-bg-hover: #dddddd;
  --btn-outline-border: #444;
  --btn-outline-text: #ccc;
  --btn-outline-hover: #fff;
  --btn-dark-border: #333;
  --btn-dark-text: #bbb;
  --card-hover-shadow: 4px 4px 0 #fff;
  --badge-bg: #ffffff;
  --badge-text: #000000;
  --check-color: #ffffff;
  --tab-active-border: #fff;
  --tab-active-text: #fff;
  --spec-text: #aaa;
  --footer-bg: #000000;
  --footer-border: #1a1a1a;
  --cta-bg: #ffffff;
  --cta-text: #000000;
  --cta-p: #444;
  --feature-bg: #111;
  --info-label: #777;
}

[data-theme="light"] {
  --bg: #ffffff;
  --surface: #f5f5f5;
  --surface2: #ececec;
  --text: #111111;
  --text-muted: #888;
  --border: #e0e0e0;
  --nav-bg: #111111;
  --hero-bg: #111111;
  --btn-bg: #000000;
  --btn-text: #ffffff;
  --btn-bg-hover: #333333;
  --btn-outline-border: #ccc;
  --btn-outline-text: #444;
  --btn-outline-hover: #111;
  --btn-dark-border: #ccc;
  --btn-dark-text: #555;
  --card-hover-shadow: 4px 4px 0 #000;
  --badge-bg: #000000;
  --badge-text: #ffffff;
  --check-color: #000000;
  --tab-active-border: #000;
  --tab-active-text: #000;
  --spec-text: #555;
  --footer-bg: #111111;
  --footer-border: #222;
  --cta-bg: #000000;
  --cta-text: #ffffff;
  --cta-p: #aaa;
  --feature-bg: #f5f5f5;
  --info-label: #999;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  transition: background 0.2s, color 0.2s;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== NAV ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  border-bottom: 1px solid #1a1a1a;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
}

.nav-logo {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-menu {
  display: flex;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li { display: flex; }

.nav-menu a {
  display: flex;
  align-items: center;
  padding: 0 14px;
  height: 52px;
  font-size: 12px;
  font-weight: 500;
  color: #999;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: #fff;
  border-bottom-color: #fff;
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1px solid #2a2a2a;
  color: #999;
  cursor: pointer;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.theme-toggle:hover { color: #fff; border-color: #555; }

#themeIconMoon { display: none; }
#themeIconSun  { display: inline-block; }

/* Nav hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid #2a2a2a;
  color: #999;
  cursor: pointer;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.nav-toggle:hover { color: #fff; border-color: #555; }

/* ===== HERO ===== */
.hero {
  background: var(--hero-bg);
  padding: 80px 0 70px;
  color: #fff;
  border-bottom: 1px solid #1a1a1a;
}

[data-theme="light"] .hero,
[data-theme="light"] .page-hero { color: #fff; }

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

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: #fff;
  color: #000;
  padding: 4px 10px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 38px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  margin-bottom: 14px;
  color: #fff;
}

.hero-sub {
  font-size: 14px;
  color: #888;
  margin-bottom: 28px;
  line-height: 1.6;
}

.hero-btns {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 10px 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  border: 2px solid transparent;
}

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

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

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

.btn-block {
  display: flex;
  width: 100%;
  justify-content: center;
}

.btn-lg { padding: 13px 24px; font-size: 13px; }

/* ===== FEATURES ===== */
.features {
  padding: 50px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}

.feature-item {
  padding: 24px 20px;
  background: var(--surface);
}

.feature-icon {
  font-size: 20px;
  color: var(--text);
  margin-bottom: 10px;
}

.feature-item h3 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

.feature-item p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ===== PRODUCTS SECTION ===== */
.products-section { padding: 50px 0; }

.single-cat-title {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 32px;
  overflow-x: auto;
  gap: 0;
}

.tab-btn {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 10px 18px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active {
  color: var(--tab-active-text);
  border-bottom-color: var(--tab-active-border);
}

.products-panel { display: none; }
.products-panel.active { display: block; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ===== CARDS ===== */
.card {
  position: relative;
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.card:hover { box-shadow: var(--card-hover-shadow); }
.card-featured { border-color: var(--text); }

.card-badge {
  position: absolute;
  top: -1px;
  right: 16px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  background: var(--badge-bg);
  color: var(--badge-text);
  padding: 3px 8px;
}

.card-head {
  padding: 22px 22px 14px;
  border-bottom: 1px solid var(--border);
}

.card-name {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.2px;
  color: var(--text);
}

.card-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-val {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text);
}

.price-period {
  font-size: 11px;
  color: var(--text-muted);
}

.card-specs {
  padding: 16px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.card-specs li {
  font-size: 12px;
  color: var(--spec-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.spec-check { font-size: 10px; color: var(--check-color); flex-shrink: 0; }

.card-footer {
  padding: 16px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--border);
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: var(--hero-bg);
  color: #fff;
  padding: 40px 0;
  border-bottom: 1px solid #1a1a1a;
}

.breadcrumb {
  font-size: 11px;
  color: #555;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.breadcrumb a { color: #666; }
.breadcrumb a:hover { color: #ccc; }
.breadcrumb i { font-size: 9px; color: #444; }
.page-hero h1 { font-size: 26px; font-weight: 700; letter-spacing: -0.5px; color: #fff; }
.page-hero p { font-size: 12px; color: #777; margin-top: 6px; }

/* ===== PRODUCT DETAIL ===== */
.product-detail { padding: 50px 0; }

.detail-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 32px;
  align-items: start;
}

.detail-specs h2 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-spec-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 24px;
}

.detail-spec-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.detail-info { border: 1px solid var(--border); }

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  font-size: 12px;
  border-bottom: 1px solid var(--border);
}

.info-row:last-child { border-bottom: none; }
.info-row span:first-child { color: var(--info-label); display: flex; align-items: center; gap: 6px; }
.info-row span:last-child { font-weight: 500; color: var(--text); }

.order-card {
  position: sticky;
  top: 66px;
  border: 1px solid var(--border);
  padding: 24px;
  background: var(--surface);
}

.card-featured.order-card,
.order-card { border: 1px solid var(--border); }

.order-card h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.order-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}

.order-spec-list {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.order-spec-list li {
  font-size: 12px;
  color: var(--spec-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.order-note {
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 50px 0;
  border-top: 1px solid var(--border);
}

.cta-box {
  background: var(--cta-bg);
  color: var(--cta-text);
  padding: 40px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-box h2 { font-size: 20px; font-weight: 700; }
.cta-box p { font-size: 12px; color: var(--cta-p); margin-top: 4px; }

/* CTA button inverted from page */
.cta-box .btn-primary {
  background: var(--bg);
  color: var(--text);
  border-color: var(--bg);
}
.cta-box .btn-primary:hover {
  opacity: 0.85;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--footer-bg);
  color: #f0f0f0;
  padding: 50px 0 0;
  border-top: 1px solid #1a1a1a;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-logo {
  display: block;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.footer-brand p { font-size: 12px; color: #555; }

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-title {
  display: block;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #444;
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 12px;
  color: #666;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.15s;
}
.footer-col a:hover { color: #ccc; }

.footer-wa {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  background: #fff;
  color: #000 !important;
  font-weight: 600;
  font-size: 12px;
  width: fit-content;
}
.footer-wa:hover { background: #ddd !important; }

.footer-note {
  font-size: 11px;
  color: #555;
  display: flex;
  align-items: center;
  gap: 5px;
  margin-top: 4px;
}

.footer-bottom {
  border-top: 1px solid #1a1a1a;
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: #444;
}

.footer-admin-link {
  color: #333;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color 0.15s;
}
.footer-admin-link:hover { color: #777; }

/* ===== EMPTY & ERROR ===== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.empty-state a { color: var(--text); font-weight: 600; }

.error-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding: 60px 0;
}

.error-box {
  text-align: center;
  max-width: 400px;
  margin: 0 auto;
}

.error-icon {
  font-size: 40px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.error-code {
  display: block;
  font-size: 80px;
  font-weight: 700;
  letter-spacing: -4px;
  line-height: 1;
  margin-bottom: 12px;
  color: var(--text);
}

.error-box h1 { font-size: 18px; margin-bottom: 8px; color: var(--text); }
.error-box p { font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .detail-layout { grid-template-columns: 1fr; }
  .order-card { position: static; }
}

@media (max-width: 768px) {
  .hero { padding: 50px 0 40px; }
  .hero h1 { font-size: 26px; }

  .nav-toggle { display: flex; }

  .nav-menu {
    display: none;
    position: absolute;
    top: 52px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    flex-direction: column;
    border-top: 1px solid #1a1a1a;
    z-index: 99;
  }
  .nav-menu.open { display: flex; }
  .nav-menu a {
    height: auto;
    padding: 12px 20px;
    border-bottom: 1px solid #1a1a1a;
    border-bottom-width: 1px !important;
  }

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

  .feature-grid { gap: 0; }
  .feature-grid { grid-template-columns: 1fr 1fr; }

  .footer-top { grid-template-columns: 1fr; gap: 24px; }

  .cta-box { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .feature-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .hero h1 { font-size: 22px; }
}