/* ============================================================
   VPNXE Design System — Components
   ============================================================ */

/* ---------- Tabs ---------- */
.tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  padding: 4px;
  width: fit-content;
}

.tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  border-radius: var(--r-s);
  transition: color .15s, background .15s, box-shadow .15s;
}

.tab:hover {
  color: var(--text);
}

.tab[aria-selected="true"] {
  color: var(--text);
  background: var(--lift);
  box-shadow: var(--shadow-card);
}

/* ---------- TOC ---------- */
.toc-tabs {
  position: sticky;
  top: calc(var(--header-h) + 8px);
  z-index: 50;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding: 10px 0;
  background: var(--panel);
  border-bottom: 1px solid var(--border-soft);
  scrollbar-width: none;
}

.toc-tabs::-webkit-scrollbar {
  display: none;
}

.toc-tabs a {
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  padding: 8px 16px;
  transition: color .15s, background .15s, border-color .15s;
  flex: none;
}

.toc-tabs a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.toc-tabs a.on {
  color: var(--accent-dark);
  background: var(--accent-tint);
  border-color: var(--accent);
  font-weight: 800;
}

body:has(.toc-tabs) section[id],
body:has(.toc-tabs) article[id] {
  scroll-margin-top: calc(var(--header-h) + 56px);
}

/* ---------- FAQ ---------- */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  background: var(--panel);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background .15s;
}

.faq-item summary:hover {
  background: var(--bg-soft);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: var(--muted);
  flex: none;
  transition: transform .2s;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-body {
  padding: 0 20px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.faq-item .faq-body p + p {
  margin-top: 10px;
}

/* ---------- Plans ---------- */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.plan-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-l);
  padding: 28px 26px;
  position: relative;
  display: flex;
  flex-direction: column;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}

.plan-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lift);
  transform: translateY(-2px);
}

.plan-card.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-tint), var(--panel) 40%);
}

.plan-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--accent);
  color: var(--lift);
  font-size: 11px;
  font-weight: 800;
  border-radius: var(--r-pill);
  padding: 4px 12px;
}

.plan-name {
  font-size: 16px;
  font-weight: 800;
  color: var(--text);
}

.plan-desc {
  font-size: 13px;
  color: var(--muted);
  margin-top: 4px;
}

.plan-price {
  margin-top: 16px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.plan-price .num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -.02em;
}

.plan-price .per {
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
}

.plan-quota {
  font-size: 13px;
  font-weight: 800;
  color: var(--accent-dark);
  margin-top: 8px;
}

.plan-feats {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.plan-feats li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.plan-feats li::before {
  content: '✓';
  font-size: 12px;
  font-weight: 800;
  color: var(--success);
  flex: none;
}

.plan-btn {
  margin-top: auto;
  padding-top: 20px;
}

.plan-btn .btn-main,
.plan-btn .btn-ghost {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Data Table ---------- */
.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 640px;
  font-size: 14px;
}

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

.data-table th {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--muted);
  text-transform: uppercase;
  background: var(--bg-soft);
  white-space: nowrap;
}

.data-table td {
  font-weight: 500;
}

.data-table tbody tr:hover {
  background: var(--bg-soft);
}

.data-table .region-row td {
  font-weight: 800;
  color: var(--accent-dark);
  background: var(--accent-tint);
}

.data-table .mono {
  font-family: var(--font-mono);
  font-size: 13px;
}

.prose > .data-table {
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
  min-width: 0;
}

/* ---------- Platform Cards ---------- */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 24px 16px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  text-align: center;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}

.platform-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.platform-card svg {
  width: 36px;
  height: 36px;
  color: var(--text);
}

.platform-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.platform-action {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-dark);
}

/* ---------- Blog Cards ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.blog-card {
  display: block;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  padding: 24px;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}

.blog-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.blog-card-meta time {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  font-family: var(--font-mono);
}

.blog-card-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 8px;
}

.blog-card-summary {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- Callout ---------- */
.callout {
  display: flex;
  gap: 14px;
  padding: 18px 20px;
  background: var(--accent-tint);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  margin: 20px 0;
}

.callout-icon {
  flex: none;
  width: 20px;
  height: 20px;
  color: var(--accent-dark);
  margin-top: 2px;
}

.callout-body {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.callout-body strong {
  color: var(--accent-dark);
}

.callout-warn {
  background: rgba(199, 127, 10, .1);
  border-left-color: var(--warn);
}

.callout-warn .callout-icon {
  color: var(--warn);
}

.callout-warn .callout-body strong {
  color: var(--warn);
}

/* ---------- Post Promo Block ---------- */
.promo-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--r-l);
  padding: 32px;
  margin: 40px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.promo-block-text {
  flex: 1;
  min-width: 240px;
}

.promo-block-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  color: var(--text);
  margin-bottom: 6px;
}

.promo-block-desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.promo-block .btn-main {
  flex: none;
}

/* ---------- Float CTA ---------- */
.float-cta {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: var(--lift);
  font-weight: 800;
  font-size: 14px;
  padding: 13px 26px;
  border-radius: var(--r-pill);
  box-shadow: var(--shadow-btn);
  transition: background .15s, transform .15s;
}

.float-cta:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
}

.float-cta svg {
  width: 16px;
  height: 16px;
  flex: none;
}

/* ---------- Preview Demo Classes ---------- */
.swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 14px;
}

.swatch {
  border: 1px solid var(--border);
  border-radius: var(--r-m);
  overflow: hidden;
}

.swatch-color {
  height: 72px;
}

.swatch-info {
  padding: 10px 12px;
  background: var(--panel);
}

.swatch-name {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}

.swatch-var {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.type-sample {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-soft);
}

.type-sample:last-child {
  border-bottom: none;
}

.type-label {
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.btn-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-row .btn-main[disabled],
.btn-row .btn-ghost[disabled] {
  opacity: .5;
  cursor: not-allowed;
  pointer-events: none;
}

.preview-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-soft);
}

.preview-section:last-child {
  border-bottom: none;
}

.preview-section h2 {
  margin-bottom: 32px;
}

.preview-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.preview-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 34px;
  height: var(--header-h);
  padding-inline: var(--gutter);
  border-bottom: 1px solid var(--border);
  background: rgba(246, 249, 254, .72);
  backdrop-filter: blur(8px);
}

.preview-footer {
  border-top: 1px solid var(--border);
  background: var(--panel);
  margin-top: 80px;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .plans-grid {
    grid-template-columns: 1fr;
  }

  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 640px) {
  .platform-grid {
    grid-template-columns: 1fr 1fr;
  }

  .promo-block {
    padding: 24px;
    flex-direction: column;
    align-items: stretch;
  }

  .promo-block .btn-main {
    width: 100%;
  }

  .float-cta {
    right: 16px;
    bottom: 16px;
    left: 16px;
    display: flex;
  }
}