/* Logo sheet — interactive download page */

:root {
  --ink: #0e0e0c;
  --paper: #efede6;
  --signal: #cbff1f;
  --signal-deep: #9ed000;
  --highlight: var(--signal);
  --highlight-fg: var(--ink);
  --highlight-on-signal: var(--ink);
  --highlight-on-signal-fg: var(--paper);
  --muted: #6b675c;
  --hair: rgba(14, 14, 12, 0.1);
  --hair-inv: rgba(239, 237, 230, 0.12);
  --font-display: "Archivo", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

::selection {
  background-color: color-mix(in srgb, var(--highlight) 99%, transparent);
  color: var(--highlight-fg);
}

::-moz-selection {
  background-color: color-mix(in srgb, var(--highlight) 99%, transparent);
  color: var(--highlight-fg);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-display);
  background: var(--paper);
  color: var(--ink);
}

.logo-sheet {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.logo-sheet__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 24px;
  border-bottom: 1px solid var(--hair);
  background: var(--ink);
  color: var(--paper);
}

.logo-sheet__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-sheet__plate {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--signal);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-transform: uppercase;
  border: 1px solid var(--ink);
}

.logo-sheet__plate--peaks {
  padding: 5px 12px 5px 10px;
}

.logo-sheet__peaks {
  width: auto;
  height: 11px;
  flex: none;
  color: var(--ink);
}

.logo-sheet__eyebrow {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(239, 237, 230, 0.45);
}

.logo-sheet__back {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(239, 237, 230, 0.55);
  text-decoration: none;
  transition: color 0.15s;
}

.logo-sheet__back:hover {
  color: var(--signal);
}

.logo-sheet__shell {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  flex: 1;
  min-height: 0;
}

.logo-sheet__nav {
  padding: 24px 0 32px;
  border-right: 1px solid var(--hair);
  background: var(--paper);
}

.logo-sheet__nav-label {
  margin: 0 0 10px;
  padding: 0 20px;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.logo-sheet__nav-divider {
  height: 1px;
  margin: 20px 20px;
  background: var(--hair);
}

.logo-sheet__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.logo-sheet__nav-item {
  display: block;
  width: 100%;
  padding: 10px 20px;
  border: none;
  border-left: 2px solid transparent;
  background: none;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
}

.logo-sheet__nav-item:hover {
  background: rgba(14, 14, 12, 0.04);
}

.logo-sheet__nav-item[aria-selected="true"] {
  border-left-color: var(--signal-deep);
  background: rgba(203, 255, 31, 0.12);
}

.logo-sheet__main {
  padding: 32px 40px 48px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 920px;
}

.logo-sheet__preview-wrap {
  width: 100%;
}

.logo-sheet__preview {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: 48px 32px;
  border: 1px solid var(--hair);
  transition: background 0.2s, border-color 0.2s;
}

.logo-sheet__preview--paper {
  background: var(--paper);
}

.logo-sheet__preview--ink {
  background: var(--ink);
  border-color: var(--hair-inv);
}

.logo-sheet__preview--signal {
  background: var(--signal);
}

.logo-sheet__preview--accent {
  background: var(--preview-accent, var(--signal));
}

.logo-sheet__card-stage--accent {
  background: var(--preview-accent, var(--signal));
}

.logo-sheet__preview--checker {
  background-color: var(--paper);
  background-image:
    linear-gradient(45deg, rgba(14, 14, 12, 0.06) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(14, 14, 12, 0.06) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(14, 14, 12, 0.06) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(14, 14, 12, 0.06) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

.logo-sheet__preview-img {
  max-width: min(100%, 520px);
  max-height: 200px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.logo-sheet__preview--dot .logo-sheet__preview-img {
  max-height: 160px;
}

.logo-sheet__meta-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.logo-sheet__tag {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.logo-sheet__title {
  margin: 0;
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.logo-sheet__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.55;
  color: var(--muted);
}

.logo-sheet__usage {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--signal-deep);
}

.logo-sheet__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  align-items: flex-start;
}

.logo-sheet__control-group--accent {
  flex: 1 1 100%;
}

.logo-sheet__accent-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.45;
  color: var(--muted);
}

.logo-sheet__accents {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.logo-sheet__accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 6px 6px;
  border: 1px solid var(--hair);
  background: var(--paper);
  cursor: pointer;
  transition: border-color 0.12s, background 0.12s;
}

.logo-sheet__accent:hover {
  border-color: var(--ink);
}

.logo-sheet__accent[aria-pressed="true"] {
  border-color: var(--ink);
  background: rgba(14, 14, 12, 0.04);
}

.logo-sheet__accent-swatch {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(14, 14, 12, 0.15);
  flex-shrink: 0;
}

.logo-sheet__accent-name {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink);
}

.logo-sheet__control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.logo-sheet__control-label {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.logo-sheet__toggle {
  display: inline-flex;
  border: 1px solid var(--hair);
}

.logo-sheet__toggle-btn {
  padding: 8px 14px;
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  transition: background 0.12s, color 0.12s;
}

.logo-sheet__toggle-btn + .logo-sheet__toggle-btn {
  border-left: 1px solid var(--hair);
}

.logo-sheet__toggle-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}

.logo-sheet__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.logo-sheet__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 18px;
  border: 1px solid var(--hair);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.logo-sheet__btn:hover {
  border-color: var(--ink);
}

.logo-sheet__btn--primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
}

.logo-sheet__btn--primary:hover {
  background: #2a2a26;
  border-color: #2a2a26;
}

.logo-sheet__filename {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  word-break: break-all;
}

.logo-sheet__library {
  padding: 32px 24px 64px;
  border-top: 1px solid var(--hair);
  background: rgba(14, 14, 12, 0.03);
}

.logo-sheet__library-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto 24px;
  padding: 0 16px;
}

.logo-sheet__library-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.logo-sheet__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
}

.logo-sheet__card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--hair);
  background: var(--paper);
  text-align: left;
  cursor: pointer;
  transition: border-color 0.12s, box-shadow 0.12s;
}

.logo-sheet__card:hover {
  border-color: var(--ink);
}

.logo-sheet__card[aria-current="true"] {
  border-color: var(--signal-deep);
  box-shadow: inset 0 0 0 1px var(--signal-deep);
}

.logo-sheet__card-stage {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  padding: 20px 16px;
}

.logo-sheet__card-stage--ink {
  background: var(--ink);
}

.logo-sheet__card-stage--paper {
  background: var(--paper);
}

.logo-sheet__card-stage--signal {
  background: var(--signal);
}

.logo-sheet__card img {
  max-width: 100%;
  max-height: 72px;
  object-fit: contain;
}

.logo-sheet__card-foot {
  padding: 10px 12px;
  border-top: 1px solid var(--hair);
}

.logo-sheet__card-name {
  display: block;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
}

.logo-sheet__card-meta {
  display: block;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

@media (max-width: 820px) {
  .logo-sheet__shell {
    grid-template-columns: 1fr;
  }

  .logo-sheet__nav {
    border-right: none;
    border-bottom: 1px solid var(--hair);
    padding-bottom: 16px;
  }

  .logo-sheet__nav-list {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 12px;
  }

  .logo-sheet__nav-item {
    width: auto;
    padding: 8px 12px;
    border-left: none;
    border-bottom: 2px solid transparent;
    font-size: 13px;
  }

  .logo-sheet__nav-item[aria-selected="true"] {
    border-bottom-color: var(--signal-deep);
  }

  .logo-sheet__nav-label,
  .logo-sheet__nav-divider {
    display: none;
  }

  .logo-sheet__main {
    padding: 24px 20px 40px;
  }
}