/* BetterGuard brand site - components and page sections. */

/* ---------- top nav (matches BetterGuard .bg-nav pattern) ---------- */
.nav {
  --nav-bg: rgba(10, 10, 15, 0.85);
  --nav-text: #9FB3C8;
  --nav-text-hover: #00E5FF;
  --nav-border: rgba(0, 184, 212, 0.12);
  --nav-height: 48px;
  --nav-px: 22px;
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--nav-border);
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--nav-px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: var(--nav-height);
  gap: 26px;
}
.nav-brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  line-height: 0;
}
.nav-brand img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  justify-self: center;
}
.nav-spacer { justify-self: end; }
.bg-lang-wrap { position: relative; justify-self: end; flex: 0 0 auto; min-width: max-content; }
.bg-lang-btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 32px; padding: 0 10px 0 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  color: var(--nav-text);
  font: 500 13px/1.2 'Sora', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  cursor: pointer;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}
.bg-lang-btn:hover { background: rgba(255, 255, 255, 0.07); border-color: rgba(0, 184, 212, 0.35); color: var(--nav-text-hover); }
.bg-lang-btn:focus-visible { outline: 2px solid #00B8D4; outline-offset: 2px; }
.bg-lang-flag { display: inline-flex; width: 18px; height: 13px; border-radius: 2px; overflow: hidden; flex: 0 0 18px; box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.15); }
.bg-lang-flag svg { width: 100%; height: 100%; display: block; }
.bg-lang-btn__name { white-space: nowrap; flex: 0 0 auto; }
.bg-lang-btn__chev { transition: transform 160ms ease; opacity: 0.7; }
.bg-lang-wrap.open .bg-lang-btn__chev { transform: rotate(180deg); }
.bg-lang-panel {
  position: absolute; top: calc(100% + 8px); right: 0;
  width: 260px;
  background: rgba(15, 17, 23, 0.96);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  padding: 8px;
  opacity: 0; transform: translateY(-4px) scale(0.98); pointer-events: none;
  transition: opacity 140ms ease, transform 140ms ease;
  z-index: 60;
}
.bg-lang-wrap.open .bg-lang-panel { opacity: 1; transform: translateY(0) scale(1); pointer-events: auto; }
.bg-lang-search { position: relative; padding: 4px 6px 8px; }
.bg-lang-search__ico { position: absolute; left: 14px; top: 4px; bottom: 8px; display: inline-flex; align-items: center; color: rgba(159, 179, 200, 0.6); pointer-events: none; }
.bg-lang-search__input {
  width: 100%; height: 32px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 0 10px 0 30px;
  color: #E6EDF3;
  font: 400 13px/1.2 'Sora', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  outline: none;
}
.bg-lang-search__input:focus { border-color: rgba(0, 184, 212, 0.5); background: rgba(255, 255, 255, 0.06); }
.bg-lang-list { list-style: none; margin: 0; padding: 0; max-height: 320px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: rgba(255, 255, 255, 0.1) transparent; }
.bg-lang-list::-webkit-scrollbar { width: 3px; }
.bg-lang-list::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.1); border-radius: 2px; }
.bg-lang-item button {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 8px 10px;
  background: transparent; border: 0; border-radius: 6px;
  color: var(--nav-text);
  font: 400 14px/1.25 'Sora', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  text-align: left; cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.bg-lang-item button:hover { background: rgba(0, 184, 212, 0.1); color: #E6EDF3; }
.bg-lang-item.active button { color: var(--nav-text-hover); }
.bg-lang-item__name { flex: 1; }
.bg-lang-item__chk { color: var(--nav-text-hover); flex: 0 0 12px; }
.bg-lang-empty { padding: 12px 10px; font-size: 12px; color: rgba(159, 179, 200, 0.6); text-align: center; }
@media (max-width: 900px) {
  .bg-lang-btn__name { display: none; }
  .bg-lang-btn { padding: 0 8px; }
}
.nav-actions a {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.33;
  color: var(--nav-text);
  letter-spacing: 0.008em;
  white-space: nowrap;
  transition: color 200ms ease-out;
}
.nav-actions a:hover,
.nav-actions a.is-active { color: var(--nav-text-hover); }
.nav-actions a:focus-visible { outline: 2px solid #00B8D4; outline-offset: 2px; border-radius: 2px; }
@media (min-width: 901px) and (max-width: 1100px) {
  .nav-actions { gap: 16px; }
  .nav-actions a { font-size: 11px; }
}
/* ---------- mobile nav drawer (≤900px) ---------- */
.nav-toggle { position: absolute; opacity: 0; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0; overflow: hidden; clip: rect(0,0,0,0); }
.nav-toggle:focus-visible ~ .nav-inner .nav-burger { outline: 2px solid var(--color-cyan); outline-offset: 2px; }
.nav-burger {
  display: none;
  width: 44px; height: 44px;
  flex: 0 0 44px;
  align-items: center; justify-content: center;
  cursor: pointer;
  color: var(--nav-text);
  border-radius: 8px;
  transition: color 160ms ease, background 160ms ease;
  -webkit-tap-highlight-color: transparent;
}
.nav-burger:hover { color: var(--nav-text-hover); background: rgba(255, 255, 255, 0.04); }
.nav-burger:active { background: rgba(255, 255, 255, 0.06); }
.nav-burger svg {
  width: 22px !important;
  height: 22px !important;
  max-width: none;
  flex: 0 0 22px;
  display: block;
  stroke: currentColor;
  fill: none;
  pointer-events: none;
}
.nav-burger__close { display: none !important; }
.nav-backdrop { display: none; }
.bg-lang-wrap--drawer { display: none; }

@media (max-width: 900px) {
  .nav { padding-top: env(safe-area-inset-top); }
  .nav-inner {
    display: flex;
    grid-template-columns: none;
    gap: 8px;
    padding: 0 16px;
    justify-content: space-between;
  }
  .nav-burger { display: inline-flex; order: 1; justify-self: auto; }
  .nav-brand { order: 4; justify-self: auto; }
  .nav-inner > .bg-lang-wrap { display: none; }
  .nav-actions > .bg-lang-wrap--drawer {
    display: block !important;
    width: 100% !important;
    align-self: stretch;
    margin: 0;
    padding: 0;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    justify-self: auto;
  }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-btn {
    display: flex !important;
    width: 100% !important;
    height: auto !important;
    min-height: 56px;
    justify-content: flex-start !important;
    align-items: center;
    gap: 12px;
    padding: 16px 4px !important;
    background: transparent !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-sizing: border-box;
    font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: #fff;
  }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-flag {
    width: 22px; height: 16px; flex: 0 0 22px;
  }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-btn__name {
    display: inline-block !important;
    max-width: none !important;
    flex: 1 1 auto;
    text-align: left;
    margin: 0;
    font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    letter-spacing: -0.01em;
    color: #fff;
  }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-btn__chev {
    margin-left: auto;
    opacity: 0.6;
    width: 14px; height: 14px;
  }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-panel {
    position: static !important;
    width: 100% !important;
    margin: 0 0 8px !important;
    padding: 4px 0 !important;
    background: transparent !important;
    border: 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    opacity: 1 !important;
    transform: none !important;
    pointer-events: auto !important;
    display: none;
  }
  .nav-actions > .bg-lang-wrap--drawer.open .bg-lang-panel { display: block; }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-list { max-height: 240px; padding: 4px 0; }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-search { padding: 4px 0 8px; }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-search__ico { left: 12px; }
  .nav-actions > .bg-lang-wrap--drawer .bg-lang-search__input { font-size: 16px; height: 40px; padding-left: 36px; }
  .nav-backdrop {
    display: block !important;
    position: fixed !important;
    top: calc(var(--nav-height) + env(safe-area-inset-top)) !important;
    left: 0 !important; right: 0 !important; bottom: 0 !important;
    width: auto !important;
    height: auto !important;
    background: rgba(0, 0, 0, 0.5) !important;
    opacity: 0;
    pointer-events: none;
    transition: opacity 240ms ease;
    z-index: 9998 !important;
  }
  .nav-actions {
    position: fixed !important;
    top: calc(var(--nav-height) + env(safe-area-inset-top)) !important;
    left: 0 !important;
    right: 0 !important;
    bottom: auto !important;
    width: 100vw !important;
    max-width: 100vw !important;
    height: calc(100dvh - var(--nav-height) - env(safe-area-inset-top)) !important;
    max-height: calc(100dvh - var(--nav-height) - env(safe-area-inset-top)) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
    gap: 0 !important;
    background-color: #0a0a0f !important;
    background-image: none !important;
    border: 0 !important;
    padding: 4px max(20px, env(safe-area-inset-right)) max(20px, env(safe-area-inset-bottom)) max(20px, env(safe-area-inset-left)) !important;
    transform: translateX(-100%);
    transition: transform 260ms cubic-bezier(0.32, 0.72, 0, 1);
    z-index: 9999 !important;
    overflow-y: auto;
    overscroll-behavior: contain;
    box-shadow: none !important;
    box-sizing: border-box;
  }
  .nav-actions a {
    font-family: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    font-weight: 400;
    letter-spacing: -0.01em;
    padding: 16px 4px;
    min-height: 56px;
    display: flex;
    align-items: center;
    border-radius: 0;
    border: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    margin: 0;
    color: #fff;
    white-space: normal;
    background: transparent;
  }
  .nav-actions a:last-child { border-bottom: 0; }
  .nav-actions a:hover,
  .nav-actions a:active,
  .nav-actions a.is-active {
    background: transparent;
    color: var(--nav-text-hover);
  }
  .nav-toggle:checked ~ .nav-inner .nav-actions { transform: translateX(0); }
  .nav-toggle:checked ~ .nav-backdrop { opacity: 1; pointer-events: auto; }
  .nav-toggle:checked ~ .nav-inner .nav-burger__open { display: none !important; }
  .nav-toggle:checked ~ .nav-inner .nav-burger__close { display: block !important; }
  body:has(.nav-toggle:checked) { overflow: hidden; }
}

/* search dropdown */
.search-pop {
  position: absolute;
  left: 0; right: 0; top: calc(100% + 8px);
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-hover);
  max-height: 60vh;
  overflow: auto;
  display: none;
  z-index: 60;
}
.search-pop.open { display: block; }
.search-pop-group { padding: 8px 0; border-bottom: 1px solid var(--color-border); }
.search-pop-group:last-child { border-bottom: 0; }
.search-pop-label {
  display: block;
  padding: 6px 16px;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-tertiary);
}
.search-pop-item {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  color: var(--color-text-primary);
}
.search-pop-item:hover, .search-pop-item.active { background: rgba(0, 184, 212, 0.08); }
.search-pop-item .v { color: var(--color-text-secondary); font-family: var(--font-mono); font-size: 12px; }

/* ---------- hero (index) ---------- */
.hero {
  padding: clamp(80px, 14vw, 160px) 0 clamp(60px, 10vw, 120px);
  text-align: center;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: transparent;
}
.hero .wrap { position: relative; z-index: 1; }
.obfuscation-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  isolation: isolate;
  transform: translateZ(0);
}
.hero-logo {
  display: block;
  margin: 0 auto 24px;
  width: clamp(120px, 14vw, 180px);
  height: auto;
}
.hero-wordmark {
  display: block;
  margin: 0 auto 40px;
  width: 100%;
  max-width: 520px;
  height: auto;
}
@media (min-width: 1024px) {
  .hero-wordmark { max-width: 1100px; }
}
.hero-h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.022em;
  max-width: 880px;
  margin: 0 auto;
  color: #fff;
}
.hero-tagline-main {
  max-width: 820px;
  margin: 20px auto 0;
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 600;
  line-height: 1.45;
  color: #fff;
}
.hero-tagline-main strong {
  color: #00E5FF;
  font-weight: 700;
}
.hero-tagline-sub {
  max-width: 760px;
  margin: 14px auto 0;
  font-size: clamp(0.9rem, 2vw, 1.125rem);
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.55);
}
.hero-tagline-accent { color: #00E5FF; }
.hero-search { max-width: 720px; margin: 40px auto 0; position: relative; }
.hero-search input {
  width: 100%;
  height: 64px;
  padding: 0 24px 0 64px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-primary);
  font-size: 18px;
  box-shadow: var(--shadow-card-hover);
  outline: none;
  transition: border-color var(--motion-duration-fast) var(--motion-ease-out);
}
.hero-search input:focus { border-color: var(--color-cyan); }
.hero-search-icon {
  position: absolute; left: 24px; top: 50%; transform: translateY(-50%);
  width: 24px; height: 24px; color: var(--color-cyan);
}
.hero-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 24px; }
.hero-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-secondary);
  transition: all var(--motion-duration-fast) var(--motion-ease-out);
}
.hero-chip:hover { color: var(--color-text-primary); border-color: var(--color-border-hover); }

/* ---------- tile grid (index 6 tiles) ---------- */
.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: clamp(40px, 8vw, 80px) 0;
}
@media (min-width: 640px) { .tiles { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .tiles { grid-template-columns: 1fr 1fr 1fr; gap: 24px; } }
.tile {
  display: block;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  backdrop-filter: var(--backdrop-feature-card);
  color: var(--color-text-primary);
  transition: transform var(--motion-duration-fast) var(--motion-ease-out),
              border-color var(--motion-duration-fast) var(--motion-ease-out),
              box-shadow var(--motion-duration-fast) var(--motion-ease-out);
  min-height: 220px;
  position: relative;
  overflow: hidden;
}
.tile:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
}
.tile-eyebrow {
  font-family: var(--font-mono); font-size: 12px;
  color: var(--color-text-tertiary);
  letter-spacing: 0.06em;
}
.tile-title { font-size: 28px; font-weight: 600; margin-top: 8px; }
.tile-desc { font-size: 14px; color: var(--color-text-secondary); margin-top: 12px; line-height: 1.5; }
.tile-preview { margin-top: 20px; display: flex; gap: 8px; flex-wrap: wrap; }

/* color preview chips */
.preview-chip { width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--color-border); }

/* ---------- page header (non-index) ---------- */
.page-head { padding: clamp(60px, 10vw, 120px) 0 32px; }
.page-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-cyan);
  letter-spacing: 0.08em;
}
.page-title { margin-top: 12px; }
.page-lead { margin-top: 16px; max-width: 720px; color: var(--color-text-secondary); }

/* ---------- TOC sidebar ---------- */
.toc {
  position: sticky;
  top: 96px;
  align-self: start;
  font-size: 14px;
}
.toc-label {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
  margin-bottom: 12px;
}
.toc a {
  display: block;
  padding: 8px 12px;
  color: var(--color-text-secondary);
  border-left: 3px solid transparent;
  margin-left: -3px;
  transition: color var(--motion-duration-fast) var(--motion-ease-out),
              border-color var(--motion-duration-fast) var(--motion-ease-out);
}
.toc a:hover { color: var(--color-text-primary); }
.toc a.active {
  color: var(--color-cyan);
  border-left: 3px solid var(--color-cyan);
}

@media (max-width: 1023px) {
  .toc { display: none; }
}

/* ---------- copy button ---------- */
.copy-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-tertiary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-chip);
  transition: all var(--motion-duration-fast) var(--motion-ease-out);
  cursor: pointer;
}
.copy-btn:hover { color: var(--color-cyan); border-color: var(--color-cyan); }
.copy-btn.copied { color: var(--color-success-light); border-color: var(--color-success-light); }

/* ---------- color chip ---------- */
.swatch {
  display: grid;
  grid-template-columns: 88px 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-related);
}
.swatch-chip { width: 88px; height: 88px; border-radius: var(--radius-chip); border: 1px solid var(--color-border); }
.swatch-name { font-weight: 600; }
.swatch-hex { font-family: var(--font-mono); font-size: 13px; color: var(--color-text-secondary); }
.swatch-role { font-size: 13px; color: var(--color-text-secondary); margin-top: 4px; }
.swatch-anchor { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-tertiary); margin-top: 4px; }
.swatch-actions { display: flex; flex-direction: column; gap: 6px; }

.swatch-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}
@media (min-width: 768px) { .swatch-grid { grid-template-columns: 1fr 1fr; } }

/* ---------- dashboard icons (product nav reference) ---------- */
.dashicons-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 12px;
  margin-top: 24px;
}
@media (min-width: 640px) { .dashicons-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 768px) { .dashicons-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (min-width: 1024px) { .dashicons-grid { grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 24px 16px; } }
.dashicon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
}
.dashicon-tile {
  display: inline-flex;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
}
.dashicon-tile.is-active { color: #22d3ee; }
.dashicon-name {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.25;
}
.dashicon-group {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

/* ---------- type specimen ---------- */
.specimen { padding: 32px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-card); margin-top: 16px; }
.specimen-meta { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-tertiary); margin-bottom: 12px; letter-spacing: 0.06em; }

/* ---------- logo cell ---------- */
.logo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 24px;
}
@media (min-width: 768px) { .logo-grid { grid-template-columns: 1fr 1fr; } }
.logo-cell {
  padding: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  text-align: center;
}
.logo-cell.invert { background: #f5f5f7; color: #1d1d1f; }
.logo-cell img { max-width: 240px; margin: 0 auto; }
.logo-cell-meta { margin-top: 16px; font-size: 13px; color: var(--color-text-secondary); }

/* ---------- spacing ruler ---------- */
.ruler { display: flex; align-items: flex-end; gap: 16px; margin-top: 16px; padding: 24px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-card); overflow-x: auto; }
.ruler-bar { background: linear-gradient(180deg, var(--color-cyan), var(--color-purple)); width: 32px; border-radius: 4px 4px 0 0; }
.ruler-cell { text-align: center; }
.ruler-label { font-family: var(--font-mono); font-size: 11px; color: var(--color-text-secondary); margin-top: 8px; }

/* ---------- code paste block ---------- */
.code {
  background: #0a0a14;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  padding: 44px 16px 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--color-text-primary);
  position: relative;
}
.code .copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 1;
  background: rgba(10, 10, 20, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.code pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ---------- section ---------- */
.section { padding: clamp(48px, 8vw, 96px) 0; }
.section + .section { border-top: 1px solid var(--color-border); }
.section-alt { background: var(--color-bg-section-alt); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  border-radius: var(--radius-control);
  transition: transform var(--motion-duration-fast) var(--motion-ease-out),
              box-shadow var(--motion-duration-fast) var(--motion-ease-out);
  cursor: pointer;
}
.btn-primary { background: var(--gradient-brand); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow-brand); color: #fff; }
.btn-secondary {
  background: transparent;
  color: var(--color-cyan-hover);
  border: 2px solid var(--color-cyan-hover);
}
.btn-secondary:hover { background: rgba(255, 255, 255, 0.1); color: #fff; }

/* ---------- 404 / not-found ---------- */
.not-found {
  padding: clamp(72px, 12vw, 128px) 0 clamp(64px, 10vw, 112px);
}
.not-found .wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.not-found-code {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.04em;
  font-size: clamp(140px, 22vw, 260px);
  line-height: 0.9;
  color: var(--color-text-primary);
}
.not-found-title {
  margin: 16px 0 16px;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.1;
  color: var(--color-text-primary);
}
.not-found-lead {
  margin: 0 0 44px;
  max-width: 56ch;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.5;
  color: var(--color-text-secondary);
}
.not-found-routes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  max-width: 880px;
  text-align: left;
}
.not-found-route {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  min-height: 56px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-control);
  background: var(--color-surface);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: border-color var(--motion-duration-colors) var(--motion-ease-out),
              background-color var(--motion-duration-colors) var(--motion-ease-out);
}
.not-found-route:hover,
.not-found-route:focus-visible {
  border-color: var(--color-border-hover);
  background: var(--color-surface-hover);
  color: var(--color-text-primary);
}
.not-found-route:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 2px;
}
.not-found-route-method {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--color-cyan);
  padding: 3px 8px;
  border-radius: var(--radius-chip);
  background: var(--color-section-badge-bg);
  border: 1px solid var(--color-section-badge-border);
}
.not-found-route-path {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-primary);
  word-break: break-all;
}
.not-found-route--ai .not-found-route-method {
  color: var(--color-purple-hover);
  background: rgba(124, 77, 255, 0.12);
  border-color: rgba(124, 77, 255, 0.30);
}
.not-found-route--ai:hover,
.not-found-route--ai:focus-visible {
  border-color: rgba(124, 77, 255, 0.30);
}

/* ---------- resource row (refined pair of links) ---------- */
.resource-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 32px;
  max-width: 640px;
}
.resource-link {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: var(--color-text-secondary, #C0CCD8);
  text-decoration: none;
  font-family: 'Sora', -apple-system, sans-serif;
  transition: background 200ms ease, border-color 200ms ease, color 200ms ease;
}
.resource-link:hover {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(0, 184, 212, 0.32);
  color: #E6EDF3;
}
.resource-link:focus-visible {
  outline: 2px solid var(--color-cyan, #00B8D4);
  outline-offset: 2px;
}
.resource-link__icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: rgba(0, 184, 212, 0.08);
  border-radius: 8px;
  color: var(--color-cyan, #00B8D4);
  flex: 0 0 32px;
  transition: background 200ms ease;
}
.resource-link:hover .resource-link__icon { background: rgba(0, 184, 212, 0.14); }
.resource-link__body {
  display: flex; flex-direction: column; gap: 2px;
  min-width: 0; flex: 1;
}
.resource-link__label {
  font-size: 14px; font-weight: 500; line-height: 1.3;
  color: #E6EDF3;
  letter-spacing: -0.005em;
}
.resource-link__meta {
  font-size: 12px; font-weight: 400; line-height: 1.3;
  color: rgba(192, 204, 216, 0.6);
  font-feature-settings: 'tnum' 1;
}
.resource-link__chev {
  display: inline-flex;
  color: rgba(192, 204, 216, 0.45);
  transition: transform 200ms ease, color 200ms ease;
  flex: 0 0 10px;
}
.resource-link:hover .resource-link__chev {
  transform: translateX(2px);
  color: var(--color-cyan, #00B8D4);
}
.resource-link.is-primary {
  background: linear-gradient(180deg, rgba(0, 184, 212, 0.10), rgba(0, 184, 212, 0.04));
  border-color: rgba(0, 184, 212, 0.28);
}
.resource-link.is-primary:hover {
  background: linear-gradient(180deg, rgba(0, 184, 212, 0.16), rgba(0, 184, 212, 0.06));
  border-color: rgba(0, 184, 212, 0.50);
}
.resource-link.is-primary .resource-link__icon {
  background: rgba(0, 184, 212, 0.18);
}
@media (max-width: 600px) {
  .resource-row { grid-template-columns: 1fr; }
}

/* ---------- callout ---------- */
.callout {
  padding: 24px;
  background: rgba(0, 184, 212, 0.04);
  border: 1px solid rgba(0, 184, 212, 0.2);
  border-left: 3px solid var(--color-cyan);
  border-radius: var(--radius-related);
  margin: 24px 0;
}
.callout strong { color: var(--color-cyan); }
.callout.warn { background: rgba(239, 68, 68, 0.04); border-color: rgba(239, 68, 68, 0.2); border-left-color: var(--color-error); }
.callout.warn strong { color: var(--color-error-light); }

/* ---------- misuse gallery ---------- */
.misuse-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-top: 24px; }
@media (min-width: 768px) { .misuse-grid { grid-template-columns: 1fr 1fr; } }
.misuse-cell {
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
}
.misuse-cell.bad { border-left: 3px solid var(--color-error); }
.misuse-tag {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: var(--radius-chip);
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-error-light);
}
.misuse-title { font-weight: 600; margin: 12px 0 4px; }
.misuse-desc { font-size: 14px; color: var(--color-text-secondary); }

/* ---------- footer (bg-footer pattern from betterguard.net) ---------- */
.bg-footer {
  --ft-bg: #1D1D1F;
  --ft-text: #A1A1A6;
  --ft-text-hover: #F5F5F7;
  --ft-heading: #D2D2D7;
  --ft-border: #424245;
  --ft-copyright: #8E8E93;
  --ft-focus: #00B8D4;
  --ft-padding-x: 22px;
  --ft-max-width: 980px;
  --ft-gap: 20px;
  background-color: var(--ft-bg);
  color: var(--ft-text);
  padding: 100px var(--ft-padding-x) 48px;
  margin-top: 8rem;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.43;
  -webkit-font-smoothing: antialiased;
}
@media (min-width: 768px) { .bg-footer { margin-top: 12rem; } }
.bg-footer-inner { max-width: var(--ft-max-width); margin: 0 auto; }
.bg-footer-brand { padding-bottom: 28px; margin-bottom: 40px; border-bottom: 1px solid var(--ft-border); }
.bg-footer-brand p { color: var(--ft-text); font-size: 13px; line-height: 1.53; max-width: 680px; margin: 0; }
.bg-footer-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 32px var(--ft-gap); margin-bottom: 40px; }
@media (max-width: 1068px) { .bg-footer-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 734px) {
  .bg-footer { padding: 60px var(--ft-padding-x) 32px; }
  .bg-footer-grid { grid-template-columns: 1fr; gap: 0; }
}
.bg-footer-heading { font-size: 13px; font-weight: 600; color: var(--ft-heading); text-transform: uppercase; letter-spacing: 0.05em; margin: 0 0 12px; padding: 0; line-height: 1.33; }
.bg-footer-details { margin: 0; }
.bg-footer-details > summary { list-style: none; cursor: default; }
.bg-footer-details > summary::-webkit-details-marker { display: none; }
.bg-footer-details > summary::marker { display: none; content: ''; }
@media (max-width: 734px) {
  .bg-footer-details > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 14px 0;
    min-height: 44px;
    margin: 0;
    border-bottom: 1px solid var(--ft-border);
    user-select: none;
  }
  .bg-footer-details > summary::after {
    content: '';
    width: 10px; height: 10px;
    border-right: 2px solid var(--ft-text);
    border-bottom: 2px solid var(--ft-text);
    transform: rotate(45deg);
    transition: transform 200ms ease;
    margin-left: 8px;
    margin-bottom: 4px;
  }
  .bg-footer-details[open] > summary::after { transform: rotate(-135deg); margin-bottom: 0; margin-top: 4px; }
  .bg-footer-details > .bg-footer-list { padding: 8px 0 16px; }
  .bg-footer-details:not([open]) > .bg-footer-list { display: none; }
  .bg-footer-group { margin: 0; }
}
.bg-footer-list { list-style: none; margin: 0; padding: 0; }
.bg-footer-list li { margin-bottom: 8px; }
.bg-footer-list li:last-child { margin-bottom: 0; }
.bg-footer-list a { color: var(--ft-text); text-decoration: none; transition: color 200ms ease-out; }
.bg-footer-list a:hover { color: var(--ft-text-hover); }
.bg-footer-list a:focus-visible { outline: 2px solid var(--ft-focus); outline-offset: 2px; border-radius: 2px; }
.bg-footer-divider { border: none; border-top: 1px solid var(--ft-border); margin: 0 0 20px; }
.bg-footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 12px; }
.bg-footer-copyright { color: var(--ft-copyright); font-size: 12px; line-height: 1.43; margin: 0; }
.bg-footer-legal-links { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 12px; }
.bg-footer-legal-links a { color: var(--ft-copyright); text-decoration: none; transition: color 200ms ease-out; white-space: nowrap; }
.bg-footer-legal-links a:hover { color: var(--ft-text-hover); }
.bg-footer-legal-links a:focus-visible { outline: 2px solid var(--ft-focus); outline-offset: 2px; border-radius: 2px; }
.bg-footer-sep { color: var(--ft-border); user-select: none; }
@media (max-width: 734px) { .bg-footer-bottom { flex-direction: column; align-items: flex-start; gap: 16px; } }
@media (prefers-reduced-motion: reduce) {
  .bg-footer-list a, .bg-footer-legal-links a { transition: none; }
}

/* ---------- motion curve preview ---------- */
.curve {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-related);
  margin-top: 12px;
}
.curve svg { width: 120px; height: 80px; }
.curve-name { font-weight: 600; }
.curve-value { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-secondary); }

/* ---------- sidebar example (dashboard pattern for /components) ---------- */
.demo-sidebar {
  width: 240px;
  padding: 16px;
  background: var(--gradient-sidebar);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
}
.demo-sidebar-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-control);
  color: var(--color-text-secondary);
  border-left: 3px solid transparent;
  margin: 4px 0;
  font-size: 14px;
}
.demo-sidebar-item.active {
  background: rgba(0, 184, 212, 0.08);
  border-left: 3px solid var(--color-cyan);
  color: var(--color-cyan);
}

/* ---------- table ---------- */
.tbl { width: 100%; border-collapse: collapse; margin-top: 16px; }
.tbl th, .tbl td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--color-border); font-size: 14px; }
.tbl th { font-weight: 600; color: var(--color-text-secondary); }
.tbl td.mono { font-family: var(--font-mono); font-size: 13px; color: var(--color-text-secondary); }

/* ---------- pulse highlight on deeplink ---------- */
@keyframes bg-pulse-highlight {
  0% { box-shadow: 0 0 0 0 rgba(0, 184, 212, 0.45); }
  100% { box-shadow: 0 0 0 12px rgba(0, 184, 212, 0); }
}
.bg-highlight {
  animation: bg-pulse-highlight 1.5s ease-out 1;
  border-radius: var(--radius-related);
}
@media (prefers-reduced-motion: reduce) {
  .bg-highlight { animation: none; outline: 2px solid var(--color-cyan); outline-offset: 4px; }
}

/* ==========================================================================
   MOBILE / TABLET LAYER (≤900px)
   Mobile-first deltas. Desktop styles above are untouched.
   ========================================================================== */

/* Touch targets — bump small interactive elements to 44px on phones */
@media (max-width: 768px) {
  .copy-btn {
    min-height: 44px;
    padding: 10px 14px;
    font-size: 12px;
  }
  .bg-lang-btn {
    min-height: 44px;
    height: auto;
    padding: 0 12px;
  }
  .bg-lang-item button {
    min-height: 44px;
    padding: 12px 12px;
    font-size: 14px;
  }
  .bg-lang-search__input {
    font-size: 16px;
    height: 40px;
    padding-left: 36px;
  }
  .bg-lang-search__ico { left: 14px; top: 4px; bottom: 8px; transform: none; }
  .swatch-actions .copy-btn { min-height: 40px; padding: 8px 12px; }
}

/* Lang panel — full-width sheet on small phones */
@media (max-width: 480px) {
  .bg-lang-panel {
    position: fixed;
    top: calc(env(safe-area-inset-top) + 56px);
    right: max(16px, env(safe-area-inset-right));
    left: max(16px, env(safe-area-inset-left));
    width: auto;
    max-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 80px);
  }
  .bg-lang-list { max-height: calc(100dvh - env(safe-area-inset-top) - env(safe-area-inset-bottom) - 180px); }
}

/* Disable decorative obfuscation canvas on phones (perf + prevents horizontal overflow) */
@media (max-width: 900px) {
  .obfuscation-bg { display: none !important; }
  .hero { isolation: auto; }
}

/* Hero + page-head padding — tighten lower bound on phones */
@media (max-width: 600px) {
  .hero { padding: 56px 0 40px; }
  .hero-wordmark { max-width: 320px; margin-bottom: 24px; }
  .hero-tagline-main { font-size: 18px; margin-top: 16px; }
  .hero-tagline-sub { font-size: 15px; margin-top: 12px; }
  .page-head { padding: 56px 0 24px; }
  .page-title { font-size: 32px; line-height: 1.15; }
  .page-lead { font-size: 16px; margin-top: 12px; }
  .section { padding: 48px 0; }
  .not-found { padding: 56px 0 48px; }
  .not-found-code { font-size: clamp(120px, 38vw, 180px); }
  .not-found-title { font-size: 24px; }
  .not-found-lead { font-size: 17px; margin-bottom: 28px; }
  .not-found-routes { grid-template-columns: 1fr; gap: 6px; max-width: 100%; }
  .not-found-route { padding: 12px 14px; }
}

/* Tile typography on phones */
@media (max-width: 600px) {
  .tile { min-height: 0; padding: 20px; }
  .tile-title { font-size: 22px; }
  .tile-desc { font-size: 15px; line-height: 1.5; }
  .tile-preview { margin-top: 16px; }
  .tiles { margin: 32px 0; gap: 12px; }
}

/* Logo cells smaller padding on phones */
@media (max-width: 600px) {
  .logo-cell { padding: 24px; }
  .logo-cell img { max-width: 180px; }
  .specimen { padding: 20px; }
  .swatch { grid-template-columns: 64px 1fr auto; padding: 12px; gap: 12px; }
  .swatch-chip { width: 64px; height: 64px; }
}

/* Code blocks — extra breathing room for copy button overlap on phones */
@media (max-width: 600px) {
  .code { padding: 52px 14px 14px; font-size: 12.5px; }
}

/* TOC — already hidden ≤1023; keep that. Section md heading scale on phones */
@media (max-width: 600px) {
  .t-section-lg { font-size: 36px; line-height: 1.1; }
  .t-section-md { font-size: 26px; line-height: 1.2; }
  .t-section-sm { font-size: 20px; }
  .t-lead { font-size: 17px; }
  body { font-size: 16px; }
}

/* Footer — reduced top margin + safe-area-inset-bottom for home indicator */
@media (max-width: 734px) {
  .bg-footer {
    margin-top: 4rem;
    padding: 48px var(--ft-padding-x) max(32px, env(safe-area-inset-bottom));
    padding-left: max(var(--ft-padding-x), env(safe-area-inset-left));
    padding-right: max(var(--ft-padding-x), env(safe-area-inset-right));
  }
  .bg-footer-brand { padding-bottom: 20px; margin-bottom: 24px; }
  .bg-footer-grid { margin-bottom: 24px; }
  .bg-footer-legal-links { gap: 10px 12px; }
  .bg-footer-legal-links .bg-footer-sep { display: none; }
}

/* Table — wrap long content instead of forcing horizontal scroll */
@media (max-width: 600px) {
  .tbl { width: 100%; table-layout: fixed; }
  .tbl th, .tbl td { padding: 10px 12px; font-size: 13px; word-break: break-word; overflow-wrap: anywhere; white-space: normal; vertical-align: top; }
  .tbl td.mono { font-size: 12px; line-height: 1.45; }
}

/* Resource row — already stacks ≤600px (existing rule keeps single-column) */
@media (max-width: 600px) {
  .resource-row { gap: 8px; }
}

/* Misuse grid — ensure single-column with comfortable padding on phones */
@media (max-width: 600px) {
  .misuse-cell { padding: 16px; }
}

/* Forms (hero-search) — bigger input on phones, 16px font-size to prevent iOS zoom */
@media (max-width: 600px) {
  .hero-search input { height: 56px; font-size: 16px; padding: 0 20px 0 52px; }
  .hero-search-icon { left: 16px; width: 20px; height: 20px; }
  .hero-chips { gap: 8px; margin-top: 20px; }
  .hero-chip { padding: 6px 12px; font-size: 13px; min-height: 32px; }
}

/* Demo sidebar — stack/scroll on phones */
@media (max-width: 600px) {
  .demo-sidebar { width: 100%; }
}

/* Ruler (spacing scale) — horizontal scroll already; gap tighten */
@media (max-width: 600px) {
  .ruler { gap: 12px; padding: 16px; }
}

/* Search popover — narrow gutters on phones */
@media (max-width: 600px) {
  .search-pop { left: 16px; right: 16px; }
}