/* ============================================================
   Server Rack Configurator — Stylesheet
   Dark professional theme
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --bg:           #0b0e18;
  --surface:      #141722;
  --surface2:     #1c2030;
  --surface3:     #232840;
  --border:       #2a2f46;
  --border2:      #353c5a;
  --accent:       #4f8ef7;
  --accent-hover: #6ba3ff;
  --text:         #dde4f0;
  --text-muted:   #7a84a0;
  --text-dim:     #4a5168;
  --danger:       #ef4444;
  --danger-hover: #f87171;
  --success:      #22c55e;
  --radius:       8px;
  --radius-sm:    5px;
  --header-h:     58px;
  --sidebar-w:    330px;
  --shadow:       0 4px 24px rgba(0,0,0,.55);
  --shadow-sm:    0 2px 10px rgba(0,0,0,.4);

  /* Device category colours */
  --c-server:  #3b82f6;
  --c-switch:  #22c55e;
  --c-router:  #ef4444;
  --c-storage: #f97316;
  --c-patch:   #a855f7;
  --c-pdu:     #06b6d4;
  --c-ups:     #eab308;
  --c-kvm:     #14b8a6;
  --c-blank:   #4b5563;
  --c-other:   #64748b;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
ul { list-style: none; }
button { cursor: pointer; font: inherit; }
input, select { font: inherit; }
svg { display: block; flex-shrink: 0; }

/* ── App Header ────────────────────────────────────────────── */
.app-header {
  height: var(--header-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
}
.header-brand h1 {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .3px;
  color: var(--text);
}
.header-icon { color: var(--accent); }
.header-actions { display: flex; gap: 10px; align-items: center; }

/* ── App Layout ────────────────────────────────────────────── */
.app-layout {
  display: flex;
  height: calc(100vh - var(--header-h));
  overflow: hidden;
}

/* ── Sidebar ───────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  overflow-y: auto;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Panels ────────────────────────────────────────────────── */
.panel {
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}
.panel.hidden { display: none; }
.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
}
.panel-header h2 {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .6px;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.panel-body { padding: 12px 14px; }
.panel-body.no-pad { padding: 0; }

/* ── Rack Info Display ─────────────────────────────────────── */
.rack-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
}
.rack-info-label { font-size: 12px; color: var(--text-muted); }
.rack-info-value { font-weight: 600; color: var(--text); }

/* ── Forms ─────────────────────────────────────────────────── */
.form-group { margin-bottom: 10px; }
.form-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .4px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.required { color: var(--danger); }
.form-input {
  width: 100%;
  background: var(--surface3);
  border: 1px solid var(--border2);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  outline: none;
  transition: border-color .15s;
}
.form-input:focus { border-color: var(--accent); }
.form-input option { background: var(--surface3); }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.form-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.form-error {
  background: rgba(239,68,68,.15);
  border: 1px solid rgba(239,68,68,.4);
  color: #fca5a5;
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: 12px;
  margin-bottom: 10px;
}

/* ── Category Swatch ──────────────────────────────────────── */
.category-swatch-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0 10px;
  font-size: 12px;
  color: var(--text-muted);
}
.category-swatch {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ── Specs Container ───────────────────────────────────────── */
.specs-container { display: flex; flex-direction: column; gap: 6px; }
.spec-row {
  display: grid;
  grid-template-columns: 1fr 1.2fr auto;
  gap: 6px;
  align-items: center;
}
.spec-row .form-input { padding: 5px 8px; font-size: 12px; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  transition: background .15s, opacity .15s;
  white-space: nowrap;
}
.btn.hidden { display: none; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  background: var(--surface3);
  color: var(--text);
  border: 1px solid var(--border2);
}
.btn-secondary:hover { background: var(--border2); }
.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border2);
}
.btn-ghost:hover { background: var(--surface3); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-hover); }
.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 4px;
  border-radius: 4px;
  line-height: 0;
  transition: background .15s, color .15s;
}
.btn-icon:hover { background: var(--surface3); color: var(--text); }
.spec-remove {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 4px 6px;
  border-radius: 4px;
  font-size: 13px;
  line-height: 1;
  transition: color .15s, background .15s;
}
.spec-remove:hover { color: var(--danger); background: rgba(239,68,68,.1); }

/* ── Badge ─────────────────────────────────────────────────── */
.badge {
  background: var(--surface3);
  border: 1px solid var(--border2);
  color: var(--text-muted);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 600;
}

/* ── Device List ───────────────────────────────────────────── */
.device-list { padding: 4px 0; }
.device-list-empty {
  padding: 16px 14px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.7;
}
.device-item {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  transition: background .1s;
  position: relative;
}
.device-item:hover { background: var(--surface3); }
.device-item.selected { background: rgba(79,142,247,.1); }
.device-item-accent {
  width: 4px;
  align-self: stretch;
  flex-shrink: 0;
  border-radius: 0;
}
.device-item-body {
  flex: 1;
  min-width: 0;
  padding: 8px 10px;
}
.device-item-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.device-item-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}
.device-item-edit {
  background: transparent;
  border: none;
  color: var(--text-dim);
  padding: 8px 12px;
  font-size: 14px;
  align-self: stretch;
  display: flex;
  align-items: center;
  transition: color .15s, background .15s;
}
.device-item-edit:hover { color: var(--accent); background: rgba(79,142,247,.1); }

/* ── Legend ────────────────────────────────────────────────── */
.legend-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 8px;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  color: var(--text-muted);
}
.legend-dot {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* ── Rack View / Canvas ────────────────────────────────────── */
.rack-view {
  flex: 1;
  overflow-y: auto;
  overflow-x: auto;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 24px 40px;
  gap: 12px;
}
.rack-view::-webkit-scrollbar { width: 8px; height: 8px; }
.rack-view::-webkit-scrollbar-track { background: transparent; }
.rack-view::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

.rack-canvas-hint {
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
  letter-spacing: .3px;
}
.rack-canvas-wrapper {
  position: relative;
  border-radius: var(--radius);
  transition: outline .15s;
}
.rack-canvas-wrapper.drag-over {
  outline: 2px dashed var(--accent);
  outline-offset: 4px;
  background: rgba(79,142,247,.04);
}
#rackCanvas {
  display: block;
  border-radius: var(--radius);
}

/* ── Tooltip ───────────────────────────────────────────────── */
.tooltip {
  position: fixed;
  z-index: 9999;
  background: #1a1d2e;
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 10px 13px;
  box-shadow: var(--shadow);
  min-width: 180px;
  max-width: 280px;
  pointer-events: none;
  font-size: 12px;
}
.tooltip.hidden { display: none; }
.tooltip-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 3px;
}
.tooltip-meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 7px;
  padding-bottom: 7px;
  border-bottom: 1px solid var(--border);
}
.tooltip-specs { display: flex; flex-direction: column; gap: 4px; }
.tooltip-spec { display: flex; gap: 6px; }
.tooltip-key { color: var(--text-muted); flex-shrink: 0; }
.tooltip-val { color: var(--text); }

/* ── Face tags (FRONT / BACK) in device list ───────────────── */
.face-tag {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: .5px;
  padding: 1px 5px;
  border-radius: 3px;
  vertical-align: middle;
  margin-right: 4px;
}
.face-tag-front { background: rgba(79,142,247,.18); color: #4f8ef7; }
.face-tag-back  { background: rgba(168,85,247,.18);  color: #a855f7; }

/* ── Form hint ─────────────────────────────────────────────── */
.form-hint {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 11px;
  color: var(--text-muted);
  background: rgba(79,142,247,.07);
  border: 1px solid rgba(79,142,247,.2);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  margin-bottom: 12px;
  line-height: 1.5;
}
.form-hint svg { flex-shrink: 0; margin-top: 1px; color: var(--accent); }

/* ── Context Menu ──────────────────────────────────────────── */
.ctx-menu {
  position: fixed;
  z-index: 9999;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 152px;
  padding: 4px 0;
}
.ctx-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 8px 14px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 13px;
  text-align: left;
  cursor: pointer;
  transition: background .1s;
}
.ctx-item:hover { background: var(--surface3); }
.ctx-danger { color: var(--danger); }
.ctx-danger:hover { background: rgba(239,68,68,.1); color: var(--danger-hover); }
.ctx-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Setup Modal ───────────────────────────────────────────── */
.setup-overlay {
  position: fixed; inset: 0; z-index: 10000;
  background: rgba(0,0,0,.72);
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.setup-modal {
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 12px;
  box-shadow: 0 24px 60px rgba(0,0,0,.5);
  display: flex; flex-direction: row; align-items: stretch;
  overflow: hidden;
}
.setup-panel {
  padding: 36px 40px 32px;
  width: 320px;
  display: flex; flex-direction: column; align-items: center;
}
.setup-divider {
  width: 1px;
  background: var(--border);
  margin: 28px 0;
}
.setup-modal-icon {
  color: var(--accent);
  margin-bottom: 14px;
}
.setup-import-icon { color: var(--text-muted); }
.setup-modal-title {
  font-size: 18px; font-weight: 700; color: var(--text);
  margin: 0 0 6px; text-align: center;
}
.setup-modal-sub {
  font-size: 13px; color: var(--text-muted);
  margin: 0 0 24px; text-align: center;
}
.setup-panel .form-group { width: 100%; }
.setup-start-btn {
  width: 100%; margin-top: auto; padding-top: 10px; padding-bottom: 10px;
  font-size: 14px; justify-content: center;
}
.setup-drop-zone {
  width: 100%; border: 2px dashed var(--border2);
  border-radius: var(--radius); padding: 28px 16px;
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  color: var(--text-muted); font-size: 13px; cursor: pointer;
  transition: border-color .15s, background .15s;
}
.setup-drop-zone:hover, .setup-drop-zone.drag-over {
  border-color: var(--accent); background: rgba(59,130,246,.06);
  color: var(--text);
}
.setup-drop-or {
  font-size: 12px; color: var(--text-muted);
  margin: 10px 0 0; text-align: center;
}

/* ── Utility ───────────────────────────────────────────────── */
.hidden { display: none !important; }