/* ============================================================
   Rack-Konfigurator — Design-Tokens
   Ästhetik: dunkles Betriebsraum-/Equipment-Panel mit
   gestanzten Rack-Schienen und Typenschild-Beschriftung.
   ============================================================ */
:root {
  --bg: #0A0C10;
  --bg-grid: #12151C;
  --panel: #1A1F29;
  --panel-alt: #242B38;
  --rail: #313A4C;
  --rail-hole: #090B0F;
  --border: #3C4457;
  --border-soft: #2A3140;

  --text: #F3F5FA;
  --text-muted: #AEB7C9;
  --text-dim: #7C87A0;

  --accent: #5EE6D9;
  --accent-strong: #38B8AC;
  --accent-soft: rgba(94, 230, 217, 0.16);

  --warn: #FFC94A;
  --warn-soft: rgba(255, 201, 74, 0.16);

  --danger: #FF6369;
  --danger-soft: rgba(255, 99, 105, 0.16);

  --font-display: 'IBM Plex Mono', 'SFMono-Regular', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;

  --he-height: 34px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  height: 100%;
}

body {
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  background-attachment: fixed;
}

h1, h2, h3 { margin: 0; font-family: var(--font-display); font-weight: 600; letter-spacing: 0.02em; }
h2 { font-size: 13px; text-transform: uppercase; color: var(--text-muted); }
h3 { font-size: 15px; color: var(--text); }

button, input, select, textarea { font-family: var(--font-body); font-size: 14px; color: var(--text); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 10px; margin-right: 8px; }
.brand-mark { color: var(--accent); font-family: var(--font-display); letter-spacing: 2px; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 15px; }

.project-controls, .storage-controls, .data-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.data-controls { margin-left: auto; }

.field-inline { display: flex; align-items: center; gap: 6px; }
.field-inline span { color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }

.save-indicator {
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--text-dim);
  padding: 4px 8px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
}
.save-indicator.is-saving { color: var(--accent); border-color: var(--accent); }
.save-indicator.is-error { color: var(--danger); border-color: var(--danger); }

.server-error {
  grid-column: 1 / -1;
  max-width: 560px;
  margin: 60px auto;
  text-align: center;
  background: var(--panel);
  border: 1px solid var(--danger);
  border-radius: var(--radius-md);
  padding: 32px;
}
.server-error h2 {
  text-transform: none;
  font-size: 18px;
  color: var(--danger);
  margin-bottom: 12px;
}
.server-error p { color: var(--text-muted); margin: 8px 0; line-height: 1.5; }
.server-error code {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 6px;
  font-family: var(--font-display);
  color: var(--accent);
}
.server-error .btn { margin-top: 12px; }

/* ---------- Buttons ---------- */
.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--panel-alt);
  color: var(--text);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: border-color .12s ease, background .12s ease, transform .05s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn-accent {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-accent:hover { background: var(--accent); color: #08201E; }
.btn-secondary { background: var(--panel-alt); border-color: var(--border); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn-ghost:hover { color: var(--text); border-color: var(--border); }
.btn-danger-ghost { background: transparent; border-color: var(--danger); color: var(--danger); }
.btn-danger-ghost:hover { background: var(--danger-soft); }
.btn-full { width: 100%; }
.btn-xs { padding: 3px 8px; font-size: 11px; }

select, input[type="text"], input[type="number"], input[type="search"], textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 9px;
  color: var(--text);
}
select:hover, input:hover, textarea:hover { border-color: var(--text-dim); }
input[type="color"] {
  width: 44px; height: 34px; padding: 2px;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm); cursor: pointer;
}

/* ---------- Layout ---------- */
.layout {
  display: grid;
  grid-template-columns: 280px minmax(460px, 920px) 240px;
  gap: 18px;
  padding: 16px;
  align-items: start;
  justify-content: center;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: 2px solid var(--accent);
  border-radius: var(--radius-md);
  padding: 14px;
  min-width: 0;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.rack-header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.segmented-sm .segmented-btn {
  padding: 5px 10px;
  font-size: 11px;
}

/* ---------- Library ---------- */
.library-filters { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.checkbox-inline { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-muted); }

.selection-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  margin-bottom: 10px;
  font-size: 12px;
}

.component-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 70vh;
  overflow-y: auto;
  padding-right: 2px;
}

.component-card {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: grab;
  transition: border-color .12s ease, box-shadow .12s ease;
}
.component-card:hover { border-color: var(--text-dim); box-shadow: 0 0 0 1px var(--border-soft); }
.component-card.is-selected { outline: 2px solid var(--accent); outline-offset: 1px; }
.component-card.is-incompatible { opacity: 0.45; }
.component-card:active { cursor: grabbing; }

.component-card-main { flex: 1; min-width: 0; }
.component-card-name { font-weight: 600; font-size: 13px; }
.component-card-sub { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.component-card-meta {
  display: flex; gap: 6px; margin-top: 6px; flex-wrap: wrap;
}
.tag {
  font-family: var(--font-display);
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.component-card-actions { display: flex; flex-direction: column; gap: 4px; }
.icon-btn {
  background: transparent; border: none; color: var(--text-dim);
  cursor: pointer; font-size: 13px; padding: 2px 4px; border-radius: 3px;
}
.icon-btn:hover { color: var(--text); background: var(--bg); }

.empty-state {
  color: var(--text-dim);
  font-size: 12px;
  padding: 20px 8px;
  text-align: center;
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
}

/* ---------- Rack visualization ---------- */
.rack-panel { display: flex; flex-direction: column; }
.rack-meta { font-family: var(--font-display); font-size: 11px; color: var(--text-dim); }

.rack-stage {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 14px 0 4px;
  overflow-x: auto;
}

.rack-frame {
  position: relative;
  background: linear-gradient(180deg, #212836, #171B23 8px, #171B23 calc(100% - 8px), #212836);
  border: 2px solid var(--accent-strong);
  border-radius: 8px;
  padding: 0 14px;
  box-shadow:
    inset 0 0 0 1px #05060A,
    0 0 0 1px rgba(94, 230, 217, 0.12),
    0 18px 40px rgba(0,0,0,0.5);
}

.rack-rail {
  position: absolute;
  top: 0; bottom: 0;
  width: 18px;
  background: repeating-linear-gradient(
    var(--rail),
    var(--rail) calc(var(--he-height) - 8px),
    var(--rail-hole) calc(var(--he-height) - 8px),
    var(--rail-hole) calc(var(--he-height) - 4px)
  );
  border-left: 1px solid #05060A;
  border-right: 1px solid #05060A;
}
.rack-rail.left { left: 0; }
.rack-rail.right { right: 0; }

.rack-units {
  position: relative;
  margin: 0 22px;
}

.rack-row {
  position: relative;
  height: var(--he-height);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  display: flex;
  align-items: stretch;
}
.rack-row:nth-child(odd) { background: rgba(255,255,255,0.025); }
.rack-row.is-marker { border-bottom: 1px solid rgba(94, 230, 217, 0.32); }

.rack-row-label {
  position: absolute;
  left: -34px;
  top: 0;
  height: var(--he-height);
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  font-family: var(--font-display);
  font-size: 10px;
  color: var(--text-dim);
}
.rack-row.is-marker .rack-row-label { color: var(--accent); font-weight: 600; }

.rack-row-slot {
  flex: 1;
  position: relative;
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,0.03) 0 6px, transparent 6px 12px);
}
.rack-row-slot.drop-ok { background-color: var(--accent-soft); outline: 1px dashed var(--accent); outline-offset: -1px; }
.rack-row-slot.drop-bad { background-color: var(--danger-soft); outline: 1px dashed var(--danger); outline-offset: -1px; }
.rack-row-slot.selectable:hover { background-color: var(--accent-soft); cursor: pointer; }

.rack-placement {
  position: absolute;
  left: 0; right: 0;
  border-radius: 4px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--accent);
  background: linear-gradient(180deg, #2C3444, #232A38);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 10px;
  cursor: grab;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 2px 6px rgba(0,0,0,0.25);
}
.rack-placement:active { cursor: grabbing; }
.rack-placement.is-dragging { opacity: 0.4; }

.placement-label {
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}
.placement-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.placement-sub {
  font-family: var(--font-display);
  font-size: 10.5px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.placement-remove {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 14px;
  flex-shrink: 0;
}
.placement-remove:hover { color: var(--danger); }

.rack-frame.is-compact .placement-name { font-size: 11px; }
.rack-frame.is-compact .placement-sub { font-size: 8.5px; }
.rack-frame.is-compact .rack-placement { padding: 0 6px; }
.rack-frame.is-compact .rack-row-label { font-size: 8px; }
.rack-frame.is-compact .depth-bar-label { font-size: 9.5px; }

.rack-hint {
  margin: 10px 2px 0;
  font-size: 11px;
  color: var(--text-dim);
}

/* ---------- Seitenansicht (Tiefe) ---------- */
.rack-frame.has-ruler .rack-rail { top: 28px; }

.depth-ruler {
  position: relative;
  height: 24px;
  margin: 0 22px 4px;
}
.depth-tick {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  font-family: var(--font-display);
  font-size: 9.5px;
  color: var(--text-muted);
  white-space: nowrap;
  padding-left: 1px;
  border-left: 1px solid var(--accent-strong);
  padding-top: 2px;
  height: 100%;
  opacity: 0.85;
}

.rack-units-side { margin-top: 28px; }

.rack-row-slot.depth-slot {
  background-image: none;
  background: linear-gradient(180deg, transparent calc(50% - 1px), var(--border) calc(50% - 1px), var(--border) calc(50% + 1px), transparent calc(50% + 1px));
}

.depth-bar-row {
  position: absolute;
  left: 0; right: 0;
}

.depth-bar {
  position: absolute;
  top: 3px; bottom: 3px;
  left: 0;
  min-width: 6px;
  border-radius: 0 4px 4px 0;
  border-left: 5px solid var(--accent);
  background: linear-gradient(90deg, #2C3444, #232A38);
  display: flex;
  align-items: center;
  overflow: hidden;
  box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset, 0 2px 6px rgba(0,0,0,0.25);
}
.depth-bar-label {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  padding: 0 8px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.depth-bar.is-overflow {
  border-left-color: var(--danger);
  background: linear-gradient(90deg, rgba(255,99,105,0.4), rgba(255,99,105,0.2));
}
.depth-bar.is-overflow .depth-bar-label { color: #FFD3D5; font-weight: 600; }
.depth-bar.is-unknown {
  background: transparent;
  border: 1px dashed var(--border);
  border-left: 1px dashed var(--text-dim);
}
.depth-bar.is-unknown .depth-bar-label { color: var(--text-dim); font-style: italic; }

/* ---------- Setup panel ---------- */
.setup-form { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 5px; }
.field > span { font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }

.segmented { display: flex; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.segmented-btn {
  flex: 1; background: var(--bg); border: none; color: var(--text-muted);
  padding: 8px; cursor: pointer; font-family: var(--font-display); font-size: 13px;
}
.segmented-btn + .segmented-btn { border-left: 1px solid var(--border); }
.segmented-btn.is-active { background: var(--accent-soft); color: var(--accent); }

.setup-summary {
  margin-top: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
  font-family: var(--font-display);
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* ---------- Modals ---------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(6,7,10,0.7);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
  padding: 20px;
}
.modal-overlay[hidden] {
  display: none !important;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}
.modal-small { max-width: 420px; }
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-soft);
  position: sticky; top: 0; background: var(--panel);
}
.modal-close { background: transparent; border: none; color: var(--text-muted); font-size: 20px; cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 14px; }
.form-row { display: flex; gap: 12px; }
.form-row .field { flex: 1; }
.form-row-3 .field { flex: 1; }
.form-hint { margin: -8px 0 0; font-size: 11px; color: var(--text-dim); }

.research-box {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--panel-alt);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.research-box-title {
  font-family: var(--font-display);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}
.research-links { display: flex; flex-wrap: wrap; gap: 8px; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.research-paste-field { margin-top: 2px; }
.research-paste-actions { display: flex; flex-wrap: wrap; gap: 8px; }

.parse-results {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 10px;
}
.parse-results-header {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; color: var(--text-muted);
}
.parse-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.parse-chip {
  display: flex; align-items: center; gap: 6px;
  background: var(--panel-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 6px 4px 10px;
  font-size: 12px;
}
.parse-chip button {
  background: var(--accent-soft);
  border: none;
  color: var(--accent);
  border-radius: 999px;
  width: 20px; height: 20px;
  cursor: pointer;
  font-size: 13px;
  line-height: 1;
}
.parse-chip button:hover { background: var(--accent); color: #08201E; }
.parse-chip.is-uncertain { border-color: var(--warn); }
.parse-empty { font-size: 12px; color: var(--text-dim); }

@keyframes field-flash {
  0% { background-color: var(--accent-soft); }
  100% { background-color: var(--bg); }
}
.field-updated { animation: field-flash 900ms ease-out; }
.modal-actions {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  margin-top: 4px; padding-top: 14px; border-top: 1px solid var(--border-soft);
}
.modal-actions-right { display: flex; gap: 8px; margin-left: auto; }
.import-options { display: flex; flex-direction: column; gap: 8px; }

/* ---------- Toasts ---------- */
.toast-container {
  position: fixed;
  bottom: 18px; left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; gap: 8px;
  z-index: 200;
}
.toast {
  font-family: var(--font-display);
  font-size: 12px;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--panel-alt);
  color: var(--text);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  animation: toast-in .15s ease-out;
}
.toast-success { border-color: var(--accent); color: var(--accent); }
.toast-error { border-color: var(--danger); color: var(--danger); }
.toast-info { border-color: var(--border); color: var(--text-muted); }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; justify-content: stretch; }
  .rack-stage { justify-content: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}