/* =========================================================
   Vape Nepal — Design System
   Static, vanilla CSS. No framework. Mobile-first.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f5;
  --color-surface: #ffffff;
  --color-border: #e3e1dc;
  --color-border-strong: #cbc8c0;
  --color-text: #1c1b19;
  --color-text-muted: #5c5a54;
  --color-text-faint: #8a8780;
  --color-accent: #2c5f4f;
  --color-accent-dark: #1e463a;
  --color-accent-contrast: #ffffff;
  --color-link: #2c5f4f;

  --status-good-bg: #e8f2ec;
  --status-good-text: #1e5c3f;
  --status-warn-bg: #fbf1de;
  --status-warn-text: #7a5210;
  --status-bad-bg: #fbe9e7;
  --status-bad-text: #8c2f1f;
  --status-neutral-bg: #f0efec;
  --status-neutral-text: #55534d;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(28, 27, 25, 0.06);
  --shadow-md: 0 4px 16px rgba(28, 27, 25, 0.08);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-max: 1240px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
}

/* ---------- Reset ---------- */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--color-link); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 var(--space-3); font-weight: 700; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.8rem, 3.2vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 var(--space-3); color: var(--color-text-muted); }
table { border-collapse: collapse; width: 100%; }
button { font-family: inherit; cursor: pointer; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}
@media (min-width: 768px) {
  .container { padding: 0 var(--space-6); }
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  z-index: 200;
}
.skip-link:focus { left: var(--space-4); top: var(--space-4); border-radius: var(--radius-sm); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  text-decoration: none;
}
.btn-primary { background: var(--color-accent); color: var(--color-accent-contrast); }
.btn-primary:hover { background: var(--color-accent-dark); text-decoration: none; }
.btn-secondary { background: transparent; color: var(--color-text); border-color: var(--color-border-strong); }
.btn-secondary:hover { border-color: var(--color-accent); color: var(--color-accent); text-decoration: none; }
.btn-block { width: 100%; }
.btn-disabled,
.btn:disabled {
  background: var(--status-neutral-bg);
  color: var(--color-text-faint);
  border-color: var(--color-border);
  cursor: not-allowed;
}
.btn-disabled:hover { text-decoration: none; }
.btn-sm { padding: 8px 14px; font-size: 0.85rem; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-3) 0;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.logo span { color: var(--color-accent); }

.header-search {
  flex: 1;
  max-width: 480px;
  display: none;
}
@media (min-width: 900px) {
  .header-search { display: block; }
}
.search-form { position: relative; }
.search-form input[type="search"] {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  background: var(--color-bg-alt);
}
.search-form input[type="search"]:focus { background: #fff; }
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.55;
}

.main-nav { display: none; }
@media (min-width: 900px) {
  .main-nav { display: flex; gap: var(--space-5); }
  .main-nav a { color: var(--color-text); font-weight: 500; font-size: 0.92rem; }
  .main-nav a:hover { color: var(--color-accent); text-decoration: none; }
}

.header-actions { display: flex; align-items: center; gap: var(--space-3); margin-left: auto; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  position: relative;
  border: 1px solid transparent;
}
.icon-btn:hover { background: var(--color-bg-alt); text-decoration: none; }
.icon-btn .badge-count {
  position: absolute;
  top: -4px; right: -4px;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  border-radius: 999px;
  min-width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 3px;
}

.nav-toggle { display: inline-flex; }
@media (min-width: 900px) { .nav-toggle { display: none; } }

.mobile-nav {
  display: none;
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) 0;
}
.mobile-nav.is-open { display: block; }
.mobile-nav ul { display: flex; flex-direction: column; gap: var(--space-2); }
.mobile-nav a { display: block; padding: var(--space-2) 0; color: var(--color-text); font-weight: 500; }
.mobile-search { padding: var(--space-2) 0 var(--space-4); }
@media (min-width: 900px) { .mobile-search { display: none; } }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  padding: var(--space-3) 0;
  font-size: 0.82rem;
  color: var(--color-text-faint);
}
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: var(--space-1); }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: var(--space-1); color: var(--color-text-faint); }
.breadcrumbs a { color: var(--color-text-muted); }
.breadcrumbs [aria-current="page"] { color: var(--color-text); }

/* ---------- Hero ---------- */
.hero {
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8) 0;
}
.hero-inner { max-width: 720px; }
.hero-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.hero p.lead { font-size: 1.05rem; color: var(--color-text-muted); max-width: 620px; }
.hero-ctas { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-5); }
.hero-disclaimer { font-size: 0.78rem; color: var(--color-text-faint); margin-top: var(--space-4); }

/* ---------- Sections ---------- */
.section { padding: var(--space-8) 0; }
.section-alt { background: var(--color-bg-alt); }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-5); flex-wrap: wrap; }
.section-head p { margin: 0; }
.section-link { font-weight: 600; font-size: 0.9rem; white-space: nowrap; }

/* ---------- Trust strip ---------- */
.trust-strip { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
@media (min-width: 768px) { .trust-strip { grid-template-columns: repeat(5, 1fr); } }
.trust-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  background: var(--color-surface);
}

/* ---------- Grids ---------- */
.grid { display: grid; gap: var(--space-5); }
.grid-products { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .grid-products { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .grid-products { grid-template-columns: repeat(4, 1fr); } }

.grid-categories { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 768px) { .grid-categories { grid-template-columns: repeat(4, 1fr); } }

.grid-brands { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 640px) { .grid-brands { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1024px) { .grid-brands { grid-template-columns: repeat(4, 1fr); } }

/* ---------- Product card ---------- */
.product-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease, border-color 0.15s ease;
}
.product-card:hover { box-shadow: var(--shadow-md); border-color: var(--color-border-strong); }
.product-card-media {
  aspect-ratio: 1 / 1;
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-4);
}
.product-card-media img { width: 100%; height: 100%; object-fit: contain; }
.product-card-body { padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-1); flex: 1; }
.product-card-brand { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-faint); }
.product-card-title { font-size: 0.98rem; font-weight: 600; color: var(--color-text); margin: 0; }
.product-card-title a { color: inherit; }
.product-card-spec { font-size: 0.8rem; color: var(--color-text-muted); }
.product-card-price { font-size: 1.05rem; font-weight: 700; margin-top: var(--space-2); }
.product-card-footer { padding: 0 var(--space-4) var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); }
.product-card-badges { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-top: var(--space-2); }
.demo-flag {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--status-warn-bg);
  color: var(--status-warn-text);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

/* ---------- Status badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.badge-good { background: var(--status-good-bg); color: var(--status-good-text); }
.badge-warn { background: var(--status-warn-bg); color: var(--status-warn-text); }
.badge-bad { background: var(--status-bad-bg); color: var(--status-bad-text); }
.badge-neutral { background: var(--status-neutral-bg); color: var(--status-neutral-text); }

/* ---------- Category & brand cards ---------- */
.category-card, .brand-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: var(--color-surface);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  height: 100%;
}
.category-card h3, .brand-card h3 { margin: 0; }
.category-card .count, .brand-card .count { font-size: 0.8rem; color: var(--color-text-faint); }
.brand-card-logo {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-alt);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-2);
}

/* ---------- Coming soon ---------- */
.coming-soon-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  background: var(--status-neutral-bg);
  padding: 3px 9px;
  border-radius: 999px;
  align-self: flex-start;
}

/* ---------- Authenticity / why-us blocks ---------- */
.feature-grid { display: grid; gap: var(--space-5); grid-template-columns: 1fr; }
@media (min-width: 768px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
.feature-grid-3 { grid-template-columns: 1fr; }
@media (min-width: 768px) { .feature-grid-3 { grid-template-columns: repeat(3, 1fr); } }
.feature-item { padding: var(--space-4) 0; border-top: 1px solid var(--color-border); }
.feature-item h3 { margin-bottom: var(--space-1); font-size: 1rem; }
.feature-item p { margin: 0; font-size: 0.9rem; }

.callout {
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.callout h2 { margin-bottom: var(--space-3); }

/* ---------- Filters / sort bar (listing page) ---------- */
.listing-layout { display: grid; gap: var(--space-6); grid-template-columns: 1fr; }
@media (min-width: 900px) { .listing-layout { grid-template-columns: 260px 1fr; } }

.filters-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  align-self: start;
}
.filter-group { border-bottom: 1px solid var(--color-border); padding-bottom: var(--space-3); margin-bottom: var(--space-3); }
.filter-group:last-child { border-bottom: none; }
.filter-group legend { font-weight: 700; font-size: 0.85rem; margin-bottom: var(--space-2); }
.filter-group label { display: flex; align-items: center; gap: var(--space-2); font-size: 0.87rem; padding: 3px 0; color: var(--color-text-muted); }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.result-count { font-size: 0.85rem; color: var(--color-text-faint); }
.sort-select, .filters-panel select, .filters-panel input[type="text"] {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 0.85rem;
  background: #fff;
}

.empty-state { text-align: center; padding: var(--space-8) 0; color: var(--color-text-faint); }

/* ---------- Product detail ---------- */
.product-detail-grid { display: grid; gap: var(--space-6); grid-template-columns: 1fr; margin-bottom: var(--space-7); }
@media (min-width: 900px) { .product-detail-grid { grid-template-columns: 1fr 1fr; } }
.gallery-main {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg-alt);
  aspect-ratio: 1/1;
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-6);
}
.product-price-row { display: flex; align-items: baseline; gap: var(--space-3); margin: var(--space-3) 0; }
.product-price { font-size: 1.8rem; font-weight: 800; }
.product-price-prev { font-size: 1rem; color: var(--color-text-faint); text-decoration: line-through; }
.spec-mini-list { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2) var(--space-4); margin: var(--space-4) 0; font-size: 0.88rem; }
.spec-mini-list dt { color: var(--color-text-faint); }
.spec-mini-list dd { margin: 0; font-weight: 600; }
.detail-actions { display: flex; flex-direction: column; gap: var(--space-2); margin-top: var(--space-5); }

/* ---------- Tabs ---------- */
.tabs { border-bottom: 1px solid var(--color-border); margin-bottom: var(--space-6); overflow-x: auto; }
.tabs ul { display: flex; gap: var(--space-5); min-width: max-content; }
.tabs a {
  display: inline-block;
  padding: var(--space-3) 0;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.tabs a:hover { color: var(--color-accent); text-decoration: none; }
.tabs a[aria-selected="true"] { color: var(--color-accent); border-bottom-color: var(--color-accent); }
.tab-section { margin-bottom: var(--space-8); scroll-margin-top: 90px; }
.tab-section h2 { margin-bottom: var(--space-2); }
.tab-section > .section-note { margin-top: calc(var(--space-2) * -1); margin-bottom: var(--space-4); }

/* ---------- Data tables ---------- */
.data-table-wrap { overflow-x: auto; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.data-table { min-width: 100%; font-size: 0.88rem; }
.data-table caption { text-align: left; padding: var(--space-3); font-weight: 700; border-bottom: 1px solid var(--color-border); }
.data-table th, .data-table td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--color-border); vertical-align: top; }
.data-table th { background: var(--color-bg-alt); font-weight: 700; color: var(--color-text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; }
.data-table tr:last-child td { border-bottom: none; }
.data-table td.num { font-variant-numeric: tabular-nums; }

.source-note { font-size: 0.78rem; color: var(--color-text-faint); margin-top: var(--space-2); }

/* ---------- Panels (nicotine/ingredients/authenticity/etc) ---------- */
.info-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
}
.info-panel h3 { margin-bottom: var(--space-3); }
.kv-list { display: grid; grid-template-columns: 1fr; gap: var(--space-2); font-size: 0.9rem; }
@media (min-width: 640px) { .kv-list { grid-template-columns: 1fr 1fr; } }
.kv-row { display: flex; justify-content: space-between; gap: var(--space-3); padding: var(--space-2) 0; border-bottom: 1px dashed var(--color-border); }
.kv-row dt { color: var(--color-text-faint); }
.kv-row dd { margin: 0; font-weight: 600; text-align: right; }

.score-bar-wrap { margin-top: var(--space-3); }
.score-bar { height: 8px; border-radius: 999px; background: var(--status-neutral-bg); overflow: hidden; }
.score-bar-fill { height: 100%; background: var(--color-accent); }
.score-label { font-size: 0.8rem; color: var(--color-text-faint); margin-top: var(--space-1); }

/* ---------- Forms ---------- */
.form-field { margin-bottom: var(--space-4); }
.form-field label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: var(--space-1); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  font-family: inherit;
}
.form-field .hint { font-size: 0.78rem; color: var(--color-text-faint); margin-top: var(--space-1); }

.notice {
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: 0.88rem;
  margin-bottom: var(--space-5);
}
.notice-info { background: var(--status-neutral-bg); color: var(--color-text); border: 1px solid var(--color-border); }
.notice-demo { background: var(--status-warn-bg); color: var(--status-warn-text); border: 1px solid #ecd9ad; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-bg-alt); border-top: 1px solid var(--color-border); margin-top: var(--space-8); }
.footer-grid { display: grid; gap: var(--space-6); grid-template-columns: repeat(2, 1fr); padding: var(--space-8) 0 var(--space-6); }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 2fr repeat(4, 1fr); } }
.footer-brand p { font-size: 0.85rem; max-width: 280px; }
.footer-col h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-faint); margin-bottom: var(--space-3); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--space-2); }
.footer-col a { color: var(--color-text-muted); font-size: 0.88rem; }
.footer-social { display: flex; gap: var(--space-3); margin-top: var(--space-3); }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-faint);
}

/* ---------- Misc utility ---------- */
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.stack { display: flex; flex-direction: column; gap: var(--space-3); }
.chip-row { display: flex; gap: var(--space-2); flex-wrap: wrap; }

/* ---------- 404 ---------- */
.error-page { text-align: center; padding: var(--space-8) 0; }
.error-code { font-size: 4rem; font-weight: 800; color: var(--color-border-strong); }