*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ── Sachsen.de Farbpalette ── */
  --sn-green:        #005b32;   /* Sachsen-Grün primär */
  --sn-green-dark:   #003d22;   /* Sachsen-Grün dunkel (Header) */
  --sn-green-mid:    #007a44;   /* Sachsen-Grün mittel (Hover) */
  --sn-green-light:  #e4ede7;   /* Sachsen-Grün hellster Ton */
  --sn-green-faint:  #f0f5f1;   /* Hintergrund-Tint */
  --sn-gold:         #c5963a;   /* Sachsen-Wappen Gold */

  --bg:              #f4f4f2;   /* Seiteninhalt-Hintergrund */
  --bg-white:        #ffffff;
  --bg-header-bar:   #003d22;   /* oberste Leiste, sehr dunkelgrün */
  --bg-nav:          #005b32;   /* Navigationsbereich */
  --bg-toolbar:      #ffffff;

  --border:          #c8d4c8;
  --border-light:    #dce8dc;
  --border-card:     #d4dfd4;

  --text:            #1a1a1a;
  --text-mid:        #3d4d3d;
  --text-dim:        #6a7a6a;
  --text-white:      #ffffff;
  --text-link:       #005b32;

  /* Operationen-Farben – gedämpfte Behördenpalette */
  --op-intersect:    #2d6e4e;
  --op-within:       #1a5c8a;
  --op-nearest:      #8a5c1a;
  --op-values:       #6a2d6e;

  --shadow-sm:       0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:       0 2px 6px rgba(0,0,0,.1),  0 1px 3px rgba(0,0,0,.08);
  --shadow-hover:    0 4px 12px rgba(0,91,50,.12), 0 2px 4px rgba(0,0,0,.08);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, -apple-system, Arial, sans-serif;
  font-size: 14px;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ══════════════════════════════════
   HEADER – dreischichtig wie sachsen.de
══════════════════════════════════ */

/* Schicht 1: Schmale Behördenleiste */
.gov-bar {
  background: var(--bg-header-bar);
  padding: .4rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.gov-bar-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  text-decoration: none;
}

/* Sachsen-Wappen SVG inline */
.wappen {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.gov-bar-brand {
  font-size: .72rem;
  font-weight: 600;
  color: rgba(255,255,255,.85);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.gov-bar-sep {
  width: 1px;
  height: 14px;
  background: rgba(255,255,255,.25);
}

.gov-bar-sub {
  font-size: .7rem;
  color: rgba(255,255,255,.55);
  letter-spacing: .04em;
}

/* Schicht 2: Grüner Haupt-Header */
header {
  background: var(--bg-nav);
  padding: 1.4rem 2rem 1.6rem;
  border-bottom: 3px solid var(--sn-gold);
  position: relative;
  overflow: hidden;
}

/* Dezentes Topografik-Muster */
header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 29px, rgba(255,255,255,.04) 30px),
    repeating-linear-gradient(90deg, transparent, transparent 29px, rgba(255,255,255,.03) 30px);
  pointer-events: none;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  max-width: 1400px;
}

.header-icon {
  flex-shrink: 0;
  width: 80px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-icon svg { width: 80px; height: auto; }

.header-text h1 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.2;
  letter-spacing: -.01em;
}

.header-text h1 em {
  font-style: normal;
  color: rgba(255,255,255,.75);
  font-weight: 400;
}

.header-text p {
  margin-top: .3rem;
  font-size: .75rem;
  color: rgba(255,255,255,.6);
  letter-spacing: .03em;
  font-family: 'Courier New', monospace;
}

/* Schicht 3: Weiße Toolbar */
.toolbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-white);
  border-bottom: 2px solid var(--sn-green);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .8rem;
  padding: .85rem 2rem;
  box-shadow: var(--shadow-sm);
}

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

.search-wrap svg {
  position: absolute;
  left: .7rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
}

#search {
  width: 100%;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .55rem .8rem .55rem 2.2rem;
  color: var(--text);
  font-family: inherit;
  font-size: .82rem;
  outline: none;
  transition: border-color .18s, box-shadow .18s;
}
#search:focus {
  border-color: var(--sn-green);
  box-shadow: 0 0 0 3px rgba(0,91,50,.12);
}
#search::placeholder { color: var(--text-dim); }

.filter-group { display: flex; gap: .4rem; flex-wrap: wrap; }

.filter-btn {
  font-family: inherit;
  font-size: .73rem;
  font-weight: 500;
  padding: .38em .85em;
  border-radius: 3px;
  border: 1px solid var(--border);
  background: var(--bg-white);
  color: var(--text-mid);
  cursor: pointer;
  transition: all .16s;
  letter-spacing: .01em;
}
.filter-btn:hover {
  border-color: var(--sn-green);
  color: var(--sn-green);
  background: var(--sn-green-faint);
}
.filter-btn.active {
  background: var(--sn-green);
  border-color: var(--sn-green);
  color: #fff;
  font-weight: 600;
}

.count-badge {
  margin-left: auto;
  font-size: .75rem;
  color: var(--text-dim);
  font-weight: 500;
  white-space: nowrap;
}

/* ── Bundesländer-Tabs ── */
.state-tabs {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  padding: 0 2rem;
}

.state-tab {
  font-family: inherit;
  font-size: .78rem;
  font-weight: 500;
  padding: .65em 1.1em;
  border: none;
  border-bottom: 3px solid transparent;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all .16s;
  letter-spacing: .01em;
  margin-bottom: -1px;
}
.state-tab:hover { color: var(--sn-green); border-bottom-color: var(--border); }
.state-tab.active {
  color: var(--sn-green);
  border-bottom-color: var(--sn-green);
  font-weight: 700;
}

/* ── Topic-Grid ── */
main {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.2rem;
  padding: 1.6rem 2rem;
}

.card {
  background: var(--bg-white);
  border: 1px solid var(--border-card);
  border-radius: 4px;
  border-top: 3px solid var(--sn-green);
  padding: 1.25rem 1.4rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .2s, transform .15s;
  animation: fadeUp .35s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-1px);
}

/* State-spezifische Akzentfarbe der Oberkante */
.card[data-state="th"] { border-top-color: #1a5c8a; }
.card[data-state="he"] { border-top-color: #8a3030; }
.card[data-state="mv"] { border-top-color: #4a3080; }
.card[data-state="rp"] { border-top-color: #804020; }
.card[data-state="st"] { border-top-color: #206080; }
.card[data-state="xx"] { border-top-color: var(--border); }

.card-header {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}

.state-badge {
  flex-shrink: 0;
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  padding: .28em .6em;
  border-radius: 2px;
  margin-top: .15rem;
  white-space: nowrap;
}

.state-badge.sn { background: var(--sn-green-light); color: var(--sn-green-dark); border: 1px solid rgba(0,91,50,.2); }
.state-badge.th { background: #dde8f2; color: #0a3a60; border: 1px solid rgba(26,92,138,.2); }
.state-badge.he { background: #f2dede; color: #5a1010; border: 1px solid rgba(138,48,48,.2); }
.state-badge.mv { background: #e8e0f2; color: #2a1060; border: 1px solid rgba(74,48,128,.2); }
.state-badge.rp { background: #f2e8dc; color: #5a2010; border: 1px solid rgba(128,64,32,.2); }
.state-badge.st { background: #dcedf5; color: #0a3850; border: 1px solid rgba(32,96,128,.2); }
.state-badge.xx { background: var(--bg); color: var(--text-dim); border: 1px solid var(--border); }

.card-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
}

.card-desc {
  font-size: .82rem;
  color: var(--text-mid);
  line-height: 1.6;
}

/* Identifier-Chips */
.card-ids {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.id-chip {
  font-family: 'Courier New', Courier, monospace;
  font-size: .66rem;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--sn-green-dark);
  padding: .2em .55em;
  border-radius: 2px;
  letter-spacing: .02em;
}

/* Operations-Tags */
.card-supports {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem;
}

.support-tag {
  font-size: .67rem;
  font-weight: 600;
  letter-spacing: .04em;
  padding: .25em .65em;
  border-radius: 2px;
}

.support-tag.intersect {
  background: rgba(45,110,78,.1);
  color: var(--op-intersect);
  border: 1px solid rgba(45,110,78,.22);
}
.support-tag.within {
  background: rgba(26,92,138,.1);
  color: var(--op-within);
  border: 1px solid rgba(26,92,138,.22);
}
.support-tag.nearestNeighbour {
  background: rgba(138,92,26,.1);
  color: var(--op-nearest);
  border: 1px solid rgba(138,92,26,.22);
}
.support-tag.valuesAtPoint {
  background: rgba(106,45,110,.1);
  color: var(--op-values);
  border: 1px solid rgba(106,45,110,.22);
}

/* ── Attribut-Toggle ── */
.attr-toggle {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  background: none;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: .35em .75em;
  color: var(--text-dim);
  font-family: inherit;
  font-size: .73rem;
  font-weight: 500;
  cursor: pointer;
  transition: all .16s;
  margin-top: .15rem;
}
.attr-toggle:hover {
  border-color: var(--sn-green);
  color: var(--sn-green);
  background: var(--sn-green-faint);
}
.attr-toggle.open {
  border-color: var(--sn-green);
  color: var(--sn-green);
  background: var(--sn-green-light);
}

.attr-toggle .chevron { transition: transform .2s ease; flex-shrink: 0; }
.attr-toggle.open .chevron { transform: rotate(90deg); }

.attr-count { font-size: .68rem; color: var(--text-dim); transition: color .16s; }
.attr-toggle.open .attr-count { color: var(--sn-green-mid); }
.attr-toggle:hover .attr-count { color: var(--sn-green-mid); }

/* ── Attribut-Panel ── */
.attr-panel {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height .3s ease, opacity .22s ease;
}
.attr-panel.open { max-height: 700px; opacity: 1; }

.attr-inner {
  border: 1px solid var(--border-light);
  border-radius: 3px;
  background: var(--sn-green-faint);
  overflow: hidden;
  margin-top: .3rem;
}

.attr-header-row {
  padding: .38rem .75rem;
  border-bottom: 1px solid var(--border-light);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--sn-green-dark);
  background: var(--sn-green-light);
}

.attr-row {
  display: flex;
  align-items: center;
  padding: .34rem .75rem;
  border-bottom: 1px solid rgba(200,212,200,.5);
  transition: background .12s;
}
.attr-row:last-child { border-bottom: none; }
.attr-row:hover { background: rgba(0,91,50,.04); }

.attr-name {
  font-family: 'Courier New', Courier, monospace;
  font-size: .73rem;
  color: var(--text);
  letter-spacing: .01em;
}

.attr-empty {
  padding: .75rem .75rem;
  font-size: .75rem;
  color: var(--text-dim);
  font-style: italic;
}

/* ── Lade- & Fehlerzustand ── */
#status {
  grid-column: 1 / -1;
  padding: 5rem 2rem;
  text-align: center;
  font-size: .85rem;
  color: var(--text-dim);
}

.status-fullwidth {
  grid-column: 1 / -1;
}

.spinner {
  display: inline-block;
  width: 32px; height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--sn-green);
  border-radius: 50%;
  animation: spin .8s linear infinite;
  margin-bottom: 1rem;
}

@keyframes spin { to { transform: rotate(360deg); } }
.error-icon { font-size: 2rem; margin-bottom: .8rem; }

.error-message {
  color: #c0392b;
  margin-top: .4rem;
  display: block;
}

/* ── Footer ── */
footer {
  background: var(--sn-green-dark);
  border-top: 3px solid var(--sn-gold);
  padding: 1.2rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .8rem;
  font-size: .72rem;
  color: rgba(255,255,255,.6);
}

footer a { color: rgba(255,255,255,.85); text-decoration: none; }
footer a:hover { text-decoration: underline; color: #fff; }

.legend { display: flex; flex-wrap: wrap; gap: .9rem; align-items: center; }
.legend-label { color: rgba(255,255,255,.4); }
.legend-item { display: flex; align-items: center; gap: .35rem; color: rgba(255,255,255,.65); }
.legend-dot { width: 8px; height: 8px; border-radius: 1px; }

.legend-dot--intersect        { background: var(--op-intersect); }
.legend-dot--within           { background: var(--op-within); }
.legend-dot--nearestNeighbour { background: var(--op-nearest); }
.legend-dot--valuesAtPoint    { background: var(--op-values); }

@media (max-width: 640px) {
  .gov-bar { padding: .4rem 1rem; }
  header { padding: 1rem 1rem 1.2rem; }
  .toolbar, .state-tabs { padding-left: 1rem; padding-right: 1rem; }
  main { padding: 1rem; grid-template-columns: 1fr; gap: .8rem; }
  footer { padding: 1rem; flex-direction: column; align-items: flex-start; }
}