/* ============================================================
   DataFromRust — Design Token System
   Aesthetic: Precision technical instrument — slate backgrounds,
   steel-blue accent, Inter type, 4/8px spacing rhythm.
   Light is :root default. Dark theme via [data-theme="dark"].
   App defaults to dark via <html data-theme="dark">.
   ============================================================ */

/* Google Fonts — Inter (weights 400/500/600/700) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Design Tokens: Light (web default / :root) ── */
:root {
  --bg:          #f0f2f5;
  --surface:     #ffffff;
  --surface-2:   #f8f9fb;
  --surface-3:   #eef0f3;

  --fg:          #1a1f2e;
  --fg-2:        #586069;
  --fg-3:        #8b949e;

  --accent:      #2d6edb;
  --accent-dim:  rgba(45,110,219,0.10);
  --accent-glow: rgba(45,110,219,0.20);

  --border:      #d0d7de;
  --border-2:    #b8c0cc;

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.18);

  /* radii */
  --r-sm:  6px;
  --r-md:  10px;
  --r-lg:  14px;

  /* type */
  --font:  'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono:  'JetBrains Mono', 'Fira Code', ui-monospace, 'Cascadia Code', monospace;
}

/* ── Design Tokens: Dark theme override ── */
[data-theme="dark"] {
  /* backgrounds */
  --bg:          #0d1117;   /* page canvas — very dark slate, not pure black */
  --surface:     #161b22;   /* sidebar, cards, panels */
  --surface-2:   #1c2230;   /* elevated surfaces (modal box, hover states) */
  --surface-3:   #212840;   /* input backgrounds */

  /* text */
  --fg:          #e6edf3;   /* primary text */
  --fg-2:        #8b949e;   /* secondary / muted text */
  --fg-3:        #6e7681;   /* placeholder, disabled */

  /* accent: steel-blue — precise, not neon */
  --accent:      #4f8ef7;
  --accent-dim:  rgba(79,142,247,0.15);
  --accent-glow: rgba(79,142,247,0.25);

  /* borders */
  --border:      #21262d;
  --border-2:    #30363d;

  /* shadows */
  --shadow-sm:   0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:   0 4px 16px rgba(0,0,0,0.55);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.7);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 15px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── App Shell ── */
.app {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar Navigation ── */
.nav {
  width: 232px;
  min-width: 232px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 12px 20px 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

/* Brand / Logo */
.brand {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  padding: 4px 16px 20px 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* Nav items — left-bar active indicator (the signature element) */
.nav-item {
  display: flex;
  align-items: center;
  color: var(--fg-2);
  text-decoration: none;
  padding: 7px 14px 7px 16px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 13.5px;
  font-weight: 500;
  transition: color 0.15s ease, background 0.15s ease;
  border-left: 3px solid transparent;
  margin-left: 0;
  position: relative;
}

.nav-item:hover {
  background: var(--accent-dim);
  color: var(--fg);
  border-left-color: var(--border-2);
}

/* Active: left accent bar — the signature detail */
.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* Theme toggle button in nav */
.theme-toggle {
  margin-top: auto;
  padding: 7px 14px 7px 16px;
  border: none;
  background: none;
  color: var(--fg-2);
  font-family: var(--font);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  border-left: 3px solid transparent;
  width: 100%;
  text-align: left;
  transition: color 0.15s ease, background 0.15s ease;
}

.theme-toggle:hover {
  background: var(--accent-dim);
  color: var(--fg);
  border-left-color: var(--border-2);
}

.theme-toggle-icon {
  font-size: 14px;
  line-height: 1;
}

/* ── Main Content ── */
.content {
  flex: 1;
  padding: 28px 32px;
  min-width: 0;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--fg);
  margin: 0 0 20px 0;
}

h2 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 12px 0;
  color: var(--fg);
}

/* ── Stat Cards (Home page) ── */
.cards {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 120px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.card:hover {
  border-color: var(--border-2);
  box-shadow: var(--shadow-md);
}

.card .num {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--fg);
  line-height: 1;
}

.card span:last-child {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ── Toolbar (search + filters) ── */
.toolbar {
  display: flex;
  gap: 8px;
  margin: 0 0 16px 0;
  flex-wrap: wrap;
  align-items: center;
}

.toolbar input,
.toolbar select {
  background: var(--surface);
  color: var(--fg);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  padding: 7px 12px;
  font-family: var(--font);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  min-width: 180px;
}

.toolbar input::placeholder {
  color: var(--fg-3);
}

.toolbar input:focus,
.toolbar select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.toolbar label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  color: var(--fg-2);
  cursor: pointer;
  padding: 7px 10px;
}

.toolbar label input[type="checkbox"] {
  min-width: unset;
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Asset Grid (sprites, effects, prefabs) ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(136px, 1fr));
  gap: 10px;
}

.tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
  position: relative;
}

.tile:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-sm);
  transform: translateY(-1px);
}

.tile input[type="checkbox"] {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
}

.tile img {
  width: 100%;
  height: 112px;
  object-fit: contain;
  background: var(--bg);
  border-radius: var(--r-sm);
  display: block;
}

.tile .name {
  font-size: 11px;
  font-family: var(--mono);
  color: var(--fg-2);
  margin: 7px 0 0;
  word-break: break-all;
  line-height: 1.4;
}

/* ── Data Table ── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  background: var(--surface);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

thead {
  background: var(--surface-2);
}

th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11.5px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--fg-2);
  border-bottom: 1px solid var(--border-2);
}

td {
  text-align: left;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--fg);
  vertical-align: middle;
}

tbody tr {
  transition: background 0.1s ease;
}

tbody tr:last-child td {
  border-bottom: none;
}

tbody tr:hover td {
  background: var(--surface-2);
}

/* Monospace shortname/ID cells */
td:first-child {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--accent);
}

/* ── Modal ── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  animation: modal-fade-in 0.15s ease;
}

@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.modal .box {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 28px 32px;
  max-width: 740px;
  width: calc(100% - 32px);
  max-height: 88vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: modal-slide-up 0.18s ease;
}

@keyframes modal-slide-up {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);   opacity: 1; }
}

.modal .box img {
  max-width: 100%;
  border-radius: var(--r-sm);
  background: var(--bg);
}

.modal .box pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 12px;
  overflow-x: auto;
  color: var(--fg-2);
  line-height: 1.5;
}

/* ── Result count / muted inline text ── */
.name {
  font-size: 12px;
  color: var(--fg-2);
  margin: 0 0 12px;
}

/* Small: shortname in modal heading */
small.name {
  font-size: 13px;
  font-family: var(--mono);
}

/* ── Download link styled as button-link ── */
a.nav-item {
  display: inline-flex;
  align-items: center;
  margin-top: 12px;
}

/* ── Scrollbar (Webkit) ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-3); }

/* ── Loading spinner ── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-left: 8px;
}

.loading-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--fg-2);
  margin: 0 0 12px 0;
}

/* ── Facet Sidebar ── */
.facet-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 160px;
}

.facet-group-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--fg-3);
  margin-bottom: 6px;
}

.facet-options {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.facet-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 5px 10px;
  background: none;
  border: none;
  border-radius: var(--r-sm);
  font-family: var(--font);
  font-size: 13px;
  color: var(--fg-2);
  cursor: pointer;
  transition: background 0.12s ease, color 0.12s ease;
}

.facet-option:hover {
  background: var(--accent-dim);
  color: var(--fg);
}

.facet-option.active {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 600;
}

/* Page layout with sidebar + content */
.page-with-facets {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.page-main {
  flex: 1;
  min-width: 0;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Focus visible (accessibility) ── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ── Responsive: collapse nav on small screens ── */
@media (max-width: 680px) {
  .app { flex-direction: column; }
  .nav {
    width: 100%;
    height: auto;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    padding: 12px;
    gap: 4px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .brand {
    width: 100%;
    padding: 0 4px 10px 4px;
    margin-bottom: 4px;
  }
  .nav-item {
    border-left: none;
    border-radius: var(--r-sm);
    padding: 6px 10px;
  }
  .nav-item.active {
    border-left: none;
    background: var(--accent-dim);
  }
  .theme-toggle {
    border-left: none;
    border-radius: var(--r-sm);
    padding: 6px 10px;
    margin-top: 0;
    width: auto;
  }
  .content { padding: 16px; }
}
