/* ============================================================================
   SidecarTridge Microfirmware Store — brand stylesheet
   Look & feel adapted from https://sidecartridge.com (EPIC-01 / D-03, D-04).
   Type: DM Sans + Fira Mono (self-hosted, C-01). Palette: deep-purple ink on
   cream, warm accents. Flat, minimal, 5px radii. Light + dark (D-03).
   ============================================================================ */

/* ---------- Self-hosted fonts (C-01: OFL, bundled under fonts/) ---------- */
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/dm-sans/dm-sans-v14-latin-regular.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('fonts/dm-sans/dm-sans-v14-latin-500.woff2') format('woff2');
}
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('fonts/dm-sans/dm-sans-v14-latin-700.woff2') format('woff2');
}
@font-face {
  font-family: 'Fira Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/fira-mono/fira-mono-v14-latin-regular.woff2') format('woff2');
}

/* ---------- Brand tokens (D-03) ---------- */
:root {
  --font-base: 'DM Sans', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'Fira Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  --color-ink: #0d042b;        /* primary text / dark surfaces */
  --color-ink-2: #3b364c;      /* muted text */
  --color-bg: #fdfcf9;         /* base background */
  --color-bg-2: #f7f6ed;       /* subtle surface */
  --color-bg-3: #faebd7;       /* warm accent surface */
  --color-on-ink: #fdfcf9;     /* text/icon on ink surfaces */
  --color-border: rgba(13, 4, 43, 0.12);

  --radius: 5px;               /* --card-border-radius / --button-border-radius */
  --radius-pill: 999px;
  --header-height: 60px;
  --section-padding: 80px;
  --shadow-sm: 0 1px 2px rgba(13, 4, 43, 0.05);

  color-scheme: light;
}

/* Dark theme mapping (D-03). Explicit opt-in… */
:root[data-theme="dark"] {
  --color-ink: #f5f5ec;
  --color-ink-2: #929eaf;
  --color-bg: #0b0326;
  --color-bg-2: #150c32;
  --color-bg-3: #251654;
  --color-on-ink: #0b0326;
  --color-border: rgba(245, 245, 236, 0.14);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  color-scheme: dark;
}
/* …and automatic, unless the page is pinned to light. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-ink: #f5f5ec;
    --color-ink-2: #929eaf;
    --color-bg: #0b0326;
    --color-bg-2: #150c32;
    --color-bg-3: #251654;
    --color-on-ink: #0b0326;
    --color-border: rgba(245, 245, 236, 0.14);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    color-scheme: dark;
  }
}

/* ---------- Base ---------- */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-base);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-ink);
  text-decoration-color: var(--color-border);
  text-underline-offset: 2px;
}
a:hover { text-decoration-color: currentColor; }

code, pre, kbd, samp { font-family: var(--font-mono); }

[x-cloak] { display: none !important; }

.main-content {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 1rem;
  box-sizing: border-box;
}

/* ---------- Header ---------- */
.app-header,
.app-nav {
  width: 100%;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  box-sizing: border-box;
}

.app-header { padding: 1rem 1rem 0; box-sizing: border-box; }

.app-header-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1.25rem;
  min-height: var(--header-height);
  padding: 1.1rem 0 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-ink);
}

.app-header-copy { min-width: 0; }

.app-header-kicker {
  display: inline-block;
  margin-bottom: 0.3rem;
  font-size: 0.74rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-ink-2);
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.app-nav-toggle {
  display: none;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
  color: var(--color-ink);
  padding: 0.6rem 0.9rem;
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}

/* ---------- Navigation ---------- */
.app-nav { margin-bottom: 1rem; padding: 0 1rem; }

.app-nav-inner {
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  padding: 0.55rem 0;
}

.app-nav-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius);
  color: var(--color-ink);
  text-decoration: none;
  font-weight: 500;
  transition: background 0.16s ease, color 0.16s ease;
}
.app-nav-link:hover,
.app-nav-link:focus-visible { background: var(--color-bg-3); }

.app-nav-link.is-active {
  background: var(--color-ink);
  color: var(--color-on-ink);
}

.browser-page .app-header,
.browser-page .app-nav,
.browser-page .main-content { max-width: 980px; }

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-ink-2);
  padding: 2.5rem 1rem;
  margin-top: auto;
  width: 100%;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
  border-top: 1px solid var(--color-border);
}

/* ---------- Hero ---------- */
.browser-main { max-width: 980px; }

.browser-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(240px, 1fr);
  gap: 1.25rem;
  padding: 1.6rem 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--color-bg-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.browser-kicker {
  display: inline-block;
  margin-bottom: 0.6rem;
  color: var(--color-ink-2);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.browser-hero-copy h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.browser-hero-copy p {
  margin: 0.85rem 0 0;
  color: var(--color-ink-2);
  font-size: 1rem;
  line-height: 1.6;
}
.browser-hero-copy a { font-weight: 500; }

.browser-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  align-self: stretch;
}

.browser-stat-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.5rem;
  min-height: 92px;
  padding: 0.9rem 1rem;
  border-radius: var(--radius);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

.browser-stat-card span {
  color: var(--color-ink-2);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.browser-stat-card strong {
  color: var(--color-ink);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.1;
}

/* ---------- Loading ---------- */
.browser-loading { margin: 1rem 0; }

.browser-loading-card {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 1rem 1.1rem;
  background: var(--color-bg-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}
.browser-loading-card i { color: var(--color-ink); font-size: 1.35rem; }
.browser-loading-card strong { display: block; color: var(--color-ink); }
.browser-loading-card p { margin: 0.2rem 0 0; color: var(--color-ink-2); }

/* ---------- Shell / sections ---------- */
.browser-shell { display: flex; flex-direction: column; gap: 1rem; }

.browser-filter-panel,
.browser-section {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  box-shadow: var(--shadow-sm);
}

/* ---------- Search + taxonomy ---------- */
.browser-search-row { display: flex; gap: 0.75rem; align-items: center; }

.browser-search-field {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex: 1 1 auto;
  padding: 0.72rem 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
}
.browser-search-field i { color: var(--color-ink-2); }
.browser-search-field input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--color-ink);
  font-family: inherit;
  font-size: 1rem;
}

.browser-taxonomy { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.9rem; }

.taxonomy-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg-2);
  color: var(--color-ink);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}
.taxonomy-chip strong {
  min-width: 1.35rem;
  padding: 0.1rem 0.4rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-3);
  color: var(--color-ink-2);
  font-size: 0.78rem;
  text-align: center;
}
.taxonomy-chip.active { border-color: var(--color-ink); background: var(--color-ink); color: var(--color-on-ink); }
.taxonomy-chip.active strong { background: rgba(255, 255, 255, 0.18); color: var(--color-on-ink); }

.browser-summary { margin: 0.9rem 0 0; color: var(--color-ink-2); }

/* ---------- Section head ---------- */
.browser-section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.2rem;
}
.browser-section-head h3 { margin: 0.15rem 0 0; color: var(--color-ink); font-size: 1.3rem; font-weight: 700; }
.browser-section-kicker {
  display: inline-block;
  color: var(--color-ink-2);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.browser-count-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.2rem;
  padding: 0.28rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-3);
  color: var(--color-ink);
  font-size: 0.9rem;
  font-weight: 700;
}
.browser-section-copy { margin: 0 0 0.95rem; color: var(--color-ink-2); }

/* ---------- Cards / rows ---------- */
.browser-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
}

.browser-entry-card,
.browser-entry-row {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
}

.browser-entry-featured {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 4rem;
  align-items: stretch;
  overflow: hidden;
}
.browser-entry-featured-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
}
.browser-entry-featured h4,
.browser-entry-row-title h4 { margin: 0; color: var(--color-ink); font-weight: 700; }

.browser-entry-topline,
.browser-entry-row-title { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

.browser-entry-date { color: var(--color-ink-2); font-size: 0.84rem; font-weight: 500; }

.browser-entry-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--color-bg-3);
  color: var(--color-ink);
  font-size: 0.76rem;
  font-weight: 500;
}

.browser-entry-path {
  margin: 0;
  color: var(--color-ink-2);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  word-break: break-all;
}

.browser-entry-actions { display: flex; justify-content: flex-start; align-items: center; flex: 0 0 auto; }
.browser-entry-actions-rail { min-width: 3.7rem; padding: 0.9rem 0.9rem 0.9rem 0.15rem; }

.browser-download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.6rem;
  height: 2.6rem;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: var(--color-on-ink);
  cursor: pointer;
  line-height: 1;
  flex: 0 0 auto;
  transition: transform 0.16s ease, opacity 0.16s ease;
}
.browser-download-button:hover,
.browser-download-button:focus-visible { transform: translateY(-1px); opacity: 0.9; }
.browser-download-button .fas { font-size: 1.1rem; }

.browser-list { display: flex; flex-direction: column; gap: 0.75rem; }

.browser-entry-row { display: flex; justify-content: space-between; align-items: stretch; overflow: hidden; }
.browser-entry-row-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.9rem 1rem;
}

/* ---------- Empty states ---------- */
.browser-empty-state {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.95rem 1rem;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
  color: var(--color-ink-2);
}
.browser-empty-state i { color: var(--color-ink-2); font-size: 1.2rem; }
.browser-empty-state p { margin: 0; }
.browser-empty-state-muted { background: var(--color-bg-2); }

.browser-inline-note { margin: 0.85rem 0 0; color: var(--color-ink-2); font-size: 0.9rem; }

/* ---------- Buttons ---------- */
.pure-button {
  font-family: inherit;
  font-weight: 500;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
  color: var(--color-ink);
}
.pure-button:hover,
.pure-button:focus-visible { background: var(--color-bg-3); }
.pure-button > i.fas { margin-right: 0.4em; }

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  border: 0;
  border-radius: var(--radius);
  background: var(--color-ink);
  color: var(--color-on-ink);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.16s ease;
}
.btn-primary:hover,
.btn-primary:focus-visible { opacity: 0.9; }

/* ---------- Mode toggle / browse A–Z / pager (future catalog primitives) ---------- */
.mode-toggle {
  display: inline-flex;
  margin-bottom: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-bg-2);
  overflow: hidden;
}
.mode-tab {
  border: 0;
  background: transparent;
  color: var(--color-ink);
  font: inherit;
  font-weight: 500;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  transition: background 0.16s ease, color 0.16s ease;
}
.mode-tab.is-active { background: var(--color-ink); color: var(--color-on-ink); }

.browse-az { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.4rem 0 1rem; }
.browse-az-btn {
  min-width: 2.1rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg-2);
  color: var(--color-ink);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.16s ease, background 0.16s ease, color 0.16s ease;
}
.browse-az-btn:hover:not(.is-disabled) { border-color: var(--color-ink); }
.browse-az-btn.is-active { border-color: var(--color-ink); background: var(--color-ink); color: var(--color-on-ink); }
.browse-az-btn.is-disabled { color: var(--color-ink-2); opacity: 0.5; cursor: default; }
.browse-az-btn.browse-az-new { margin-right: 0.5rem; border-color: var(--color-border); background: var(--color-bg-3); color: var(--color-ink); }
.browse-az-btn.browse-az-new.is-active { background: var(--color-ink); color: var(--color-on-ink); }

.browse-pager { display: flex; align-items: center; justify-content: center; gap: 0.9rem; margin-top: 1rem; }
.browse-pager-info { color: var(--color-ink-2); font-size: 0.92rem; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .browser-hero { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .app-header { padding: 0.8rem 0.8rem 0; }
  .app-header-inner { align-items: center; }
  .app-nav-toggle { display: inline-flex; flex: 0 0 auto; }
  .app-nav { display: none; margin-bottom: 0.8rem; }
  .app-nav.is-open { display: block; }
  .app-nav-inner { display: block; }
  .app-nav-link { border-bottom: 1px solid var(--color-border); border-radius: 0; }
  .app-nav-inner .app-nav-link:last-child { border-bottom: 0; }
  .main-content { padding: 0.85rem; }

  .browser-search-row,
  .browser-entry-row { flex-direction: column; align-items: stretch; }
  .browser-entry-featured { grid-template-columns: 1fr; }
  .browser-entry-actions-rail { min-width: 0; padding: 0 0.9rem 0.9rem; }
  .browser-stat-grid { grid-template-columns: 1fr; }
}