/* ===================================================
   PARTPILOT DESIGN SYSTEM v2
   Industrial-precision dark theme. Readable on mobile.
   =================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=DM+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --bg-0: #060a13;
  --bg-1: #0c1120;
  --bg-2: #131a2e;
  --bg-3: #1a2340;
  --bg-hover: #1f2b4a;
  --border-1: #1e2a48;
  --border-2: #2a3a60;
  --border-focus: #4d8ef7;
  --text-0: #f4f6fb;
  --text-1: #c4ccdf;
  --text-2: #8694b2;
  --text-3: #5a6888;
  --blue: #4d8ef7;
  --blue-dim: rgba(77,142,247,0.12);
  --blue-glow: rgba(77,142,247,0.25);
  --green: #34d399;
  --green-dim: rgba(52,211,153,0.10);
  --green-border: rgba(52,211,153,0.25);
  --amber: #fbbf24;
  --amber-dim: rgba(251,191,36,0.10);
  --amber-border: rgba(251,191,36,0.25);
  --red: #f87171;
  --red-dim: rgba(248,113,113,0.10);
  --red-border: rgba(248,113,113,0.25);
  --teal: #2dd4bf;
  --teal-dim: rgba(45,212,191,0.10);
  --r: 10px;
  --r-sm: 6px;
  --r-lg: 14px;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Menlo', monospace;
  --pad: 20px;
}

/* ── LIGHT THEME ── */
[data-theme="light"] {
  --bg-0: #f5f7fa;
  --bg-1: #ffffff;
  --bg-2: #f0f2f5;
  --bg-3: #e4e7ed;
  --bg-hover: #dce0e8;
  --border-1: #d8dce5;
  --border-2: #c0c7d4;
  --border-focus: #3b7de6;
  --text-0: #111827;
  --text-1: #374151;
  --text-2: #6b7280;
  --text-3: #9ca3af;
  --blue: #3b7de6;
  --blue-dim: rgba(59,125,230,0.10);
  --blue-glow: rgba(59,125,230,0.20);
  --green: #10b981;
  --green-dim: rgba(16,185,129,0.10);
  --green-border: rgba(16,185,129,0.25);
  --amber: #d97706;
  --amber-dim: rgba(217,119,6,0.08);
  --amber-border: rgba(217,119,6,0.20);
  --red: #dc2626;
  --red-dim: rgba(220,38,38,0.08);
  --red-border: rgba(220,38,38,0.20);
  --teal: #0d9488;
  --teal-dim: rgba(13,148,136,0.08);
}

/* ── THEME TOGGLE BUTTON ── */
.theme-toggle {
  width: 36px; height: 36px; border-radius: var(--r-sm);
  border: 1px solid var(--border-1); background: transparent;
  color: var(--text-2); display: flex; align-items: center;
  justify-content: center; transition: all 0.2s; cursor: pointer;
  flex-shrink: 0;
}
.theme-toggle:hover { border-color: var(--border-2); color: var(--text-1); background: var(--bg-2); }
.theme-toggle .icon-sun, .theme-toggle .icon-moon { width: 16px; height: 16px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-0);
  color: var(--text-0);
  min-height: 100vh;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: var(--font-body); }
input { font-family: var(--font-body); }

.page { width: 100%; padding-bottom: 48px; }
.px { padding-left: var(--pad); padding-right: var(--pad); }

.nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px var(--pad);
  border-bottom: 1px solid var(--border-1);
  background: var(--bg-1);
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: blur(12px);
}
.nav-logo {
  font-family: var(--font-mono); font-weight: 700; font-size: 19px;
  color: var(--text-0); letter-spacing: -0.5px;
}
.nav-logo b { color: var(--blue); }
.nav-right { display: flex; align-items: center; gap: 10px; }
.nav-btn {
  height: 36px; padding: 0 14px; border-radius: var(--r-sm);
  border: 1px solid var(--border-1); background: transparent;
  color: var(--text-2); font-size: 14px; font-weight: 500;
  display: flex; align-items: center; gap: 6px; transition: all 0.2s;
}
.nav-btn:hover { border-color: var(--border-2); color: var(--text-1); background: var(--bg-2); }
.nav-back {
  font-size: 14px; color: var(--text-2);
  display: flex; align-items: center; gap: 4px; transition: color 0.2s;
}
.nav-back:hover { color: var(--text-0); }

.tabs {
  display: flex; margin: 16px var(--pad) 0;
  background: var(--bg-1); border-radius: var(--r); padding: 3px;
  border: 1px solid var(--border-1);
}
.tab {
  flex: 1; padding: 10px 14px; text-align: center; font-size: 14px; font-weight: 600;
  border-radius: calc(var(--r) - 2px); transition: all 0.2s;
  color: var(--text-3); background: transparent; border: none;
  display: flex; align-items: center; justify-content: center; gap: 6px;
}
.tab.active { background: var(--bg-3); color: var(--text-0); box-shadow: 0 1px 4px rgba(0,0,0,0.3); }
.tab:not(.active):hover { color: var(--text-2); }

.search-wrap { position: relative; margin-top: 16px; }
.search-wrap .s-icon {
  position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-3);
  pointer-events: none;
}
.search-input {
  width: 100%; padding: 14px 16px 14px 44px;
  font-size: 15px; font-family: var(--font-mono);
  background: var(--bg-1); border: 1.5px solid var(--border-1);
  border-radius: var(--r); color: var(--text-0); outline: none; transition: all 0.2s;
}
.search-input::placeholder { color: var(--text-3); font-family: var(--font-body); font-size: 14px; }
.search-input:focus { border-color: var(--blue); box-shadow: 0 0 0 3px var(--blue-dim); }
.search-sub { text-align: center; margin-top: 8px; font-size: 13px; color: var(--text-3); }

.card {
  background: var(--bg-1); border: 1px solid var(--border-1);
  border-radius: var(--r); padding: 16px; transition: border-color 0.2s;
}
.card:hover { border-color: var(--border-2); }
.card + .card { margin-top: 8px; }

.badge {
  display: inline-flex; align-items: center; padding: 4px 10px;
  font-size: 12px; font-weight: 700; border-radius: 5px;
  text-transform: uppercase; letter-spacing: 0.5px;
}
.badge-nrnd { background: var(--red-dim); color: var(--red); border: 1px solid var(--red-border); }
.badge-active { background: var(--green-dim); color: var(--green); border: 1px solid var(--green-border); }
.badge-eol { background: var(--amber-dim); color: var(--amber); border: 1px solid var(--amber-border); }
.badge-unknown { background: var(--bg-3); color: var(--text-2); border: 1px solid var(--border-2); }

.stitle {
  font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-3); margin-bottom: 10px;
}

.alert {
  padding: 14px 16px; border-radius: var(--r);
  display: flex; align-items: flex-start; gap: 10px;
}
.alert svg { flex-shrink: 0; margin-top: 2px; }
.alert p { font-size: 14px; font-weight: 600; line-height: 1.4; }
.alert-danger { background: var(--red-dim); border: 1px solid var(--red-border); }
.alert-danger svg, .alert-danger p { color: var(--red); }
.alert-warn { background: var(--amber-dim); border: 1px solid var(--amber-border); }
.alert-warn svg, .alert-warn p { color: var(--amber); }

.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 12px 22px; font-size: 15px; font-weight: 600;
  background: var(--blue); color: #fff; border: none; border-radius: var(--r);
  transition: all 0.2s; box-shadow: 0 2px 12px rgba(77,142,247,0.25);
}
.btn-primary:hover { background: #3a7ae6; transform: translateY(-1px); box-shadow: 0 4px 18px rgba(77,142,247,0.35); }
.btn-primary.full { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-secondary {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; font-size: 14px; font-weight: 600;
  background: var(--bg-2); color: var(--text-0); border: 1.5px solid var(--border-2);
  border-radius: var(--r-sm); transition: all 0.2s;
}
.btn-secondary:hover { border-color: var(--blue); background: var(--bg-3); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  padding: 7px 16px; font-size: 13px; font-weight: 500;
  border-radius: 100px; border: 1px solid var(--border-1);
  background: transparent; color: var(--text-2); transition: all 0.2s;
}
.chip:hover { border-color: var(--text-3); color: var(--text-1); }
.chip.on { background: var(--blue-dim); border-color: var(--blue); color: var(--blue); }

.toggle {
  width: 44px; height: 24px; border-radius: 12px; background: var(--border-2);
  position: relative; border: none; transition: background 0.2s; flex-shrink: 0;
}
.toggle::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: #fff; transition: transform 0.2s;
}
.toggle.on { background: var(--blue); }
.toggle.on::after { transform: translateX(20px); }

.spec-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--border-1); border-radius: var(--r); overflow: hidden;
  border: 1px solid var(--border-1);
}
.spec-cell { padding: 12px 14px; background: var(--bg-1); }
.spec-cell .l { font-size: 11px; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 3px; }
.spec-cell .v { font-size: 14px; font-weight: 600; font-family: var(--font-mono); color: var(--text-0); }

.cmp { width: 100%; border-collapse: collapse; }
.cmp th {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text-3); text-align: left; padding: 8px 10px;
  border-bottom: 1px solid var(--border-1);
}
.cmp td {
  font-size: 13px; padding: 8px 10px; color: var(--text-1);
  border-bottom: 1px solid rgba(30,42,72,0.5);
}
.cmp .mono { font-family: var(--font-mono); }
.cmp td:last-child { text-align: right; font-weight: 600; }
.cmp .match { color: var(--green); }
.cmp .minor { color: var(--amber); }
.cmp-note {
  padding: 10px 12px; margin-top: 6px; background: var(--amber-dim);
  border-radius: var(--r-sm); border-left: 3px solid var(--amber);
  font-size: 13px; color: var(--text-1); line-height: 1.5; font-style: italic;
}

.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--border-1); border-top-color: var(--blue);
  border-radius: 50%; margin: 0 auto 16px;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.anim { animation: fadeUp 0.35s ease both; }
.anim-d1 { animation-delay: 0.06s; }
.anim-d2 { animation-delay: 0.12s; }
.anim-d3 { animation-delay: 0.18s; }
.anim-d4 { animation-delay: 0.24s; }
.anim-d5 { animation-delay: 0.30s; }
.anim-d6 { animation-delay: 0.36s; }

@media (min-width: 640px) {
  :root { --pad: 40px; }
}
@media (min-width: 768px) {
  :root { --pad: 56px; }
  .tabs { max-width: 340px; }
  .search-wrap { max-width: 600px; }
}
@media (min-width: 1024px) {
  :root { --pad: 80px; }
}
@media (min-width: 1400px) {
  :root { --pad: 120px; }
}

.mt-sm { margin-top: 8px; }
.mt { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb { margin-bottom: 16px; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 8px; }
.mono { font-family: var(--font-mono); }
.text-2 { color: var(--text-2); }
.text-3 { color: var(--text-3); }
.hidden { display: none; }