/* ============================================================
   NIST CSF 2.0 Reference — Design System
   grc.theadminstack.com/iso27001
   Follows portfolio_v2_style.md (IBM Plex Sans/Mono,
   neutral monochrome palette, no hue accent, no gradients)
   ============================================================ */

/* ── Design Tokens — Light Mode ───────────────────────────── */
:root {
  color-scheme: light;

  /* Surfaces */
  --bg:   #f9fafb;
  --bg-1: #ffffff;
  --bg-2: #f3f4f6;
  --bg-3: #e5e7eb;

  /* Text */
  --text:   #111827;
  --text-2: #4b5563;
  --text-3: #9ca3af;

  /* Borders */
  --border:   #e5e7eb;
  --border-2: #d1d5db;

  /* Accent (monochrome only — no hue) */
  --accent:        #111827;
  --accent-inv:    #ffffff;
  --accent-subtle: #f3f4f6;
  --accent-glow:   rgba(17,24,39,.08);

  /* Nav */
  --nav-bg: rgba(249,250,251,0.92);

  /* Status — functional severity use only */
  --sev-critical: #dc2626;
  --sev-high:     #ea580c;
  --sev-medium:   #d97706;
  --sev-low:      #16a34a;
  --sev-none:     #6b7280;

  /* Local helpers */
  --green: #16a34a;
  --red:   #dc2626;

  /* Radii */
  --r-xs:  4px;    /* tiny inline chips */
  --r-sm:  6px;    /* buttons, inputs, badges, small UI */
  --r:     10px;   /* cards, search form */
  --r-lg:  14px;   /* large tool cards */
  --r-pill: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow:    0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 32px rgba(0,0,0,.10);

  /* Typography */
  --font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  /* Nav height */
  --nav-h: 64px;
}

/* ── Dark Mode Tokens ──────────────────────────────────────── */
html.dark {
  color-scheme: dark;

  --bg:   #0f1117;
  --bg-1: #161b22;
  --bg-2: #21262d;
  --bg-3: #30363d;

  --text:   #f0f6fc;
  --text-2: #8b949e;
  --text-3: #484f58;

  --border:   #30363d;
  --border-2: #3d444d;

  --accent:        #f0f6fc;
  --accent-inv:    #0f1117;
  --accent-subtle: #21262d;
  --accent-glow:   rgba(240,246,252,.08);

  --nav-bg: rgba(15,17,23,0.92);

  --shadow-sm: 0 1px 3px rgba(0,0,0,.35);
  --shadow:    0 4px 16px rgba(0,0,0,.35);
  --shadow-lg: 0 10px 32px rgba(0,0,0,.45);
}

/* ── Base Reset ────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  padding-top: var(--nav-h);
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
ul { list-style: none; }
svg { display: block; flex-shrink: 0; }

/* ── Typography ────────────────────────────────────────────── */
h1, h2, h3, h4 {
  font-family: var(--font-sans);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* ── Navigation ────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: var(--nav-h);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav.scrolled { box-shadow: var(--shadow-sm); }

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-brand-mark {
  width: 32px;
  height: 32px;
  background: var(--accent);
  color: var(--accent-inv);
  border-radius: var(--r-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.nav-brand-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}

.nav-brand-sub {
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-3);
  line-height: 1.2;
}

.nav-sep { flex: 1; }

.nav-back {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  padding: 6px 14px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border);
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.nav-back:hover {
  color: var(--text);
  border-color: var(--border-2);
  background: var(--bg-2);
}

.theme-toggle {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background: transparent;
  color: var(--text-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s, color 0.15s;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--border-2);
  color: var(--text);
}

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  background: var(--bg-1);
  border-bottom: 1px solid var(--border);
  padding: 48px 0 32px;
}

.hero-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r-pill);
  padding: 4px 12px;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(1.5rem, 3.5vw, 2.125rem);
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.hero-sub {
  font-size: 0.9375rem;
  color: var(--text-2);
  max-width: 560px;
  line-height: 1.65;
}

/* ── Main Layout ───────────────────────────────────────────── */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

/* ── Toolbar (search + version toggle + export) ────────────── */
.toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.version-toggle {
  display: flex;
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.ver-btn {
  padding: 7px 16px;
  font-size: 0.8125rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--text-2);
  transition: background 0.15s, color 0.15s;
  letter-spacing: 0.02em;
}

.ver-btn + .ver-btn {
  border-left: 1px solid var(--border-2);
}

.ver-btn.active {
  background: var(--accent);
  color: var(--accent-inv);
}

.search-wrap {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 38px;
  padding: 0 12px 0 38px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input::placeholder { color: var(--text-3); }
.search-input:focus {
  border-color: var(--text-3);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.btn-export {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-2);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  flex-shrink: 0;
}

.btn-export:hover {
  color: var(--text);
  border-color: var(--border-2);
  background: var(--bg-2);
}

/* ── Filter Pills ──────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 20px;
  overflow-x: auto;
  padding-bottom: 2px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.filter-bar::-webkit-scrollbar { display: none; }

.filter-pill {
  flex-shrink: 0;
  padding: 5px 14px;
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--text-2);
  background: var(--bg-1);
  border: 1px solid var(--border-2);
  border-radius: var(--r-pill);
  white-space: nowrap;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.filter-pill:hover {
  border-color: var(--border-2);
  color: var(--text);
  background: var(--bg-2);
}

.filter-pill.active {
  background: var(--accent);
  color: var(--accent-inv);
  border-color: var(--accent);
}

/* ── Results Stats ─────────────────────────────────────────── */
.results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 8px;
}

.results-count {
  font-size: 0.8125rem;
  color: var(--text-3);
  font-family: var(--font-mono);
}

.results-count strong { color: var(--text-2); }

/* ── Control Cards Grid ────────────────────────────────────── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 16px;
}

/* ── Control Card ──────────────────────────────────────────── */
.control-card {
  background: var(--bg-1);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s, box-shadow 0.15s;
}

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

.card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.card-id-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  padding: 2px 8px;
  letter-spacing: 0.02em;
}

.badge-new {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--green);
  background: color-mix(in srgb, var(--green) 10%, transparent);
  border: 1px solid color-mix(in srgb, var(--green) 25%, transparent);
  border-radius: var(--r-xs);
  padding: 2px 6px;
}

.btn-copy {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  font-size: 0.725rem;
  font-weight: 500;
  color: var(--text-3);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  white-space: nowrap;
  transition: color 0.15s, border-color 0.15s;
  flex-shrink: 0;
}

.btn-copy:hover { color: var(--text-2); border-color: var(--border-2); }
.btn-copy.copied {
  color: var(--green);
  border-color: color-mix(in srgb, var(--green) 30%, transparent);
}

.card-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.card-domain {
  font-size: 0.725rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
}

.card-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

/* ── Evidence Section ──────────────────────────────────────── */
.evidence-section {
  border-top: 1px solid var(--border);
  padding-top: 8px;
}

.evidence-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}

.evidence-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.evidence-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-2);
  line-height: 1.5;
}

.evidence-item::before {
  content: '';
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--border-2);
  flex-shrink: 0;
  margin-top: 0.5em;
}

/* ── Mapping Badge ─────────────────────────────────────────── */
.mapping-row {
  padding-top: 8px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.mapping-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-3);
  flex-shrink: 0;
}

.mapping-ids {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.mapping-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-3);
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r-xs);
  padding: 1px 6px;
}

/* ── Empty State ───────────────────────────────────────────── */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 24px;
  color: var(--text-3);
}

.empty-state svg {
  margin: 0 auto 16px;
  opacity: 0.35;
}

.empty-state p {
  font-size: 0.9375rem;
}

/* ── Footer ────────────────────────────────────────────────── */
footer {
  background: var(--bg-1);
  border-top: 1px solid var(--border);
  margin-top: 80px;
  padding: 32px 24px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-3);
}

footer a { color: var(--text-2); }
footer a:hover { color: var(--text); }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 900px) {
  .nav-back { display: none; }
}

@media (max-width: 640px) {
  .nav-inner { padding: 0 16px; }
  .hero-wrap  { padding: 0 16px; }
  main        { padding: 24px 16px; }

  .nav-brand-sub { display: none; }

  .toolbar {
    flex-wrap: wrap;
    gap: 8px;
  }

  .version-toggle { order: -1; }
  .search-wrap    { min-width: 100%; order: 0; }
  .btn-export     { order: 1; }

  .cards-grid { grid-template-columns: 1fr; }
}

/* card-id rendered as link to the programmatic page */
a.card-id{text-decoration:none;cursor:pointer}
a.card-id:hover{text-decoration:underline;text-underline-offset:2px}