/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body, #app { height: 100%; overflow: hidden; font-family: "Segoe UI", system-ui, sans-serif; font-size: 13px; }
body { background: #12121c; color: #c8ccee; }

/* ── Layout ───────────────────────────────────────────────────────────────── */
#app { display: flex; flex-direction: column; }

#toolbar {
  display: flex; align-items: center; gap: 8px; padding: 0 12px;
  height: 48px; background: #0e0e1a; border-bottom: 1px solid #2a2a44;
  flex-shrink: 0; z-index: 10;
}
.toolbar-left  { display: flex; align-items: center; gap: 10px; min-width: 220px; }
.toolbar-center { display: flex; align-items: center; gap: 5px; flex: 1; justify-content: center; flex-wrap: wrap; }
.toolbar-right  { display: flex; align-items: center; gap: 8px; min-width: 180px; justify-content: flex-end; }
.toolbar-label  { font-size: 11px; color: #555577; white-space: nowrap; }

#mode-indicator {
  text-align: center; font-size: 11px; color: #00cc88; background: #0a1a14;
  border-bottom: 1px solid #1a3a2a; height: 22px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}

#main { display: flex; flex: 1; overflow: hidden; }

/* ── Sidebars ─────────────────────────────────────────────────────────────── */
#left-sidebar {
  width: 240px; flex-shrink: 0; background: #14142a;
  border-right: 1px solid #2a2a44; display: flex; flex-direction: column; overflow: hidden;
}
#right-sidebar {
  width: 248px; flex-shrink: 0; background: #14142a;
  border-left: 1px solid #2a2a44; overflow-y: auto;
}

.sidebar-section { display: flex; flex-direction: column; flex-shrink: 0; }
.section-header {
  padding: 7px 10px; font-size: 11px; font-weight: 600; letter-spacing: .05em;
  text-transform: uppercase; color: #6666aa; background: #10101e;
  border-bottom: 1px solid #222238; display: flex; align-items: center; justify-content: space-between;
  flex-shrink: 0;
}

/* ── Sidebar tabs ─────────────────────────────────────────────────────────── */
.tab-bar {
  display: flex; border-bottom: 1px solid #222238; background: #10101e; flex-shrink: 0;
}
.sidebar-tab {
  flex: 1; padding: 6px 4px; font-size: 11px; font-weight: 500; text-align: center;
  background: transparent; border: none; border-radius: 0; color: #555577;
  border-bottom: 2px solid transparent; cursor: pointer; transition: color .15s;
}
.sidebar-tab:hover { color: #9999cc; background: #18182e; }
.sidebar-tab.active { color: #88aaff; border-bottom-color: #5577dd; }

.tab-panel { display: flex; flex-direction: column; }

/* ── Diagram list ─────────────────────────────────────────────────────────── */
#diagram-list { padding: 4px; }
.diagram-item {
  padding: 6px 8px; border-radius: 5px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: baseline;
  border: 1px solid transparent; margin-bottom: 2px;
}
.diagram-item:hover { background: #1e1e3a; border-color: #3a3a5a; }
.diagram-item.active { background: #1a2a4a; border-color: #4466aa; }
.di-name { font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; font-size: 12px; cursor: pointer; }
.di-date { font-size: 10px; color: #555577; margin-left: 6px; white-space: nowrap; cursor: pointer; }
.di-del-btn {
  flex-shrink: 0; opacity: 0; padding: 1px 5px; font-size: 13px; line-height: 1;
  background: transparent; border-color: transparent; color: #ff6666;
  transition: opacity .15s; margin-left: 4px;
}
.diagram-item:hover .di-del-btn { opacity: 1; }
.di-del-btn:hover { background: #3a1414; border-color: #aa3333; }
.di-dup-btn {
  flex-shrink: 0; opacity: 0; padding: 1px 5px; font-size: 13px; line-height: 1;
  background: transparent; border-color: transparent; color: #88aaff;
  transition: opacity .15s; margin-left: 4px;
}
.diagram-item:hover .di-dup-btn { opacity: 1; }
.di-dup-btn:hover { background: #1a1a40; border-color: #4466aa; }

/* ── View tab bar ────────────────────────────────────────────────────────── */
#view-tab-bar {
  display: flex; align-items: center; gap: 2px;
  padding: 3px 8px; background: #0c0c1c; border-bottom: 1px solid #2a2a44;
  flex-shrink: 0;
}
.view-tab {
  padding: 3px 12px; font-size: 11px; border-radius: 4px 4px 0 0;
  background: #1a1a30; border: 1px solid #2a2a44; border-bottom: none;
  color: #8888aa; cursor: pointer;
}
.view-tab { display: inline-flex; align-items: center; gap: 4px; }
.view-tab.active { background: #1e2a4a; border-color: #4466aa; color: #c0c8f0; }
.view-tab:hover:not(.active) { background: #1e1e38; color: #aaa; }
.view-tab-close {
  font-size: 13px; line-height: 1; opacity: 0.4; padding: 0 2px;
  border-radius: 3px;
}
.view-tab-close:hover { opacity: 1; background: rgba(255,80,80,0.25); color: #ff8888; }
#btn-add-view {
  padding: 2px 8px; font-size: 14px; background: transparent;
  border: 1px dashed #333355; border-radius: 4px; color: #556; cursor: pointer;
}
#btn-add-view:hover { border-color: #5566aa; color: #99aadd; }

/* ── Device library ───────────────────────────────────────────────────────── */
#device-library { padding: 6px; display: flex; flex-direction: column; gap: 3px; }
.lib-item {
  display: flex; align-items: center; gap: 8px; padding: 7px 8px;
  border: 1px solid #2a2a44; border-radius: 5px; cursor: grab; user-select: none;
  background: #18182e; transition: background .1s, border-color .1s;
}
.lib-item:hover { background: #22224a; border-color: #5555aa; }
.lib-item:active { cursor: grabbing; }
.lib-icon  { font-size: 16px; width: 22px; text-align: center; }
.lib-label { font-size: 12px; }

/* ── Connector library ────────────────────────────────────────────────────── */
.lib-conn-item {
  padding: 7px 8px; border: 1px solid #1e1e38; border-radius: 5px; cursor: grab;
  background: #141428; margin-bottom: 3px; user-select: none; transition: background .1s, border-color .1s;
}
.lib-conn-item:hover { background: #1e1e40; border-color: #4444aa; }
.lib-conn-item:active { cursor: grabbing; }
.conn-name { font-size: 12px; font-weight: 500; color: #bbc0ee; }
.conn-meta { font-size: 10px; color: #556688; margin-top: 1px; }

/* ── Canvas area ──────────────────────────────────────────────────────────── */
#canvas-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
#canvas-container {
  flex: 1; width: 100%;
  background-color: #131320;
  background-image: radial-gradient(circle, #2e2e50 1px, transparent 1px);
  background-size: 20px 20px;
}
#canvas-container.wire-mode { cursor: crosshair; }

#canvas-placeholder {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none; z-index: 5;
}
.placeholder-content { text-align: center; color: #44446a; pointer-events: all; }
.placeholder-content h2 { font-size: 28px; margin-bottom: 10px; }
.placeholder-content p  { margin-bottom: 16px; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
button {
  background: #22223a; border: 1px solid #3a3a5a; color: #c0c4e8;
  padding: 5px 11px; border-radius: 5px; cursor: pointer; font-size: 12px;
  transition: background .12s, border-color .12s; white-space: nowrap;
}
button:hover  { background: #2e2e54; border-color: #5555aa; }
button:active { background: #1a1a3a; }

.mode-btn          { padding: 5px 12px; }
.mode-btn.active   { background: #1e3a6a; border-color: #4488dd; color: #88bbff; }

.route-btn         { padding: 4px 10px; font-size: 11px; }
.route-btn.active  { background: #1a2a4a; border-color: #336699; color: #77aaee; }

#btn-harness.active { background: #1a2a1a; border-color: #336633; color: #88ee88; }

.danger-btn        { color: #ff6666; border-color: #662222; }
.danger-btn:hover  { background: #3a1414; border-color: #aa3333; }

.app-title { font-weight: 700; font-size: 15px; color: #88aaff; white-space: nowrap; }

.diagram-name-input {
  background: #1a1a2e; border: 1px solid #2a2a44; color: #c8ccee;
  padding: 4px 8px; border-radius: 4px; font-size: 13px; width: 180px;
}
.diagram-name-input:focus { outline: none; border-color: #5566aa; }

/* Export dropdown */
.export-wrap { position: relative; }
#export-menu {
  display: none; position: absolute; right: 0; top: calc(100% + 4px);
  background: #1a1a2e; border: 1px solid #3a3a5a; border-radius: 6px;
  min-width: 170px; z-index: 100; overflow: hidden; flex-direction: column;
}
#export-menu.open { display: flex; }
#export-menu button { border: none; border-radius: 0; text-align: left; padding: 8px 14px; border-bottom: 1px solid #222238; }
#export-menu button:last-child { border-bottom: none; }

/* Saved indicator */
#saved-indicator {
  font-size: 11px; color: #4caa77; background: #0f2a1a;
  border: 1px solid #1e4a2a; padding: 4px 10px; border-radius: 4px;
  opacity: 0; transition: opacity 0.3s; pointer-events: none; white-space: nowrap;
}
#saved-indicator.show { opacity: 1; }

/* ── Octopart search results ──────────────────────────────────────────────── */
#octopart-results {
  margin-top: 5px; border: 1px solid #2a2a44; border-radius: 4px;
  background: #0e0e1e; max-height: 220px; overflow-y: auto;
}
.op-result {
  padding: 7px 9px; cursor: pointer; border-bottom: 1px solid #1a1a30;
  transition: background 0.1s;
}
.op-result:last-child { border-bottom: none; }
.op-result:hover { background: #1a1a38; }
.op-mpn  { font-size: 11px; font-weight: 600; color: #c8ccee; }
.op-mfr  { font-size: 10px; color: #7788aa; margin-top: 1px; }
.op-desc { font-size: 10px; color: #4a5566; margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.op-ds   { font-size: 10px; color: #4466aa; margin-top: 1px; }
.op-no-results { padding: 10px; font-size: 11px; color: #444466; text-align: center; }
#btn-octopart-search.searching { opacity: 0.5; pointer-events: none; }

/* ── Properties panel ─────────────────────────────────────────────────────── */
.prop-row { padding: 7px 10px; border-bottom: 1px solid #1e1e36; }
.prop-row label {
  display: block; font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .06em; color: #555577; margin-bottom: 4px;
}
.prop-row input[type="text"], .prop-row input[type="number"],
.prop-row select, .prop-row textarea {
  width: 100%; background: #0e0e1e; border: 1px solid #2a2a44;
  color: #c0c4e8; padding: 5px 7px; border-radius: 4px; font-size: 12px; font-family: inherit;
}
.prop-row input:focus, .prop-row select:focus, .prop-row textarea:focus { outline: none; border-color: #5566aa; }
.prop-value { font-size: 12px; color: #99aacc; }
.prop-value.mono { font-family: monospace; }

.color-swatch { width: 36px; height: 28px; padding: 2px; cursor: pointer; border-radius: 4px; flex-shrink: 0; border: 1px solid #3a3a5a; }

/* Pin table */
.pin-table { width: 100%; border-collapse: collapse; font-size: 11px; }
.pin-table th { text-align: left; padding: 3px 4px; color: #555577; font-weight: 600; border-bottom: 1px solid #222238; }
.pin-table td { padding: 2px 4px; border-bottom: 1px solid #1a1a30; vertical-align: middle; }
.pin-table .pin-side { color: #444466; font-size: 10px; }
.pin-input { width: 100%; background: #0e0e1e; border: 1px solid #2a2a44; color: #c0c4e8; padding: 2px 4px; border-radius: 3px; font-family: monospace; font-size: 11px; }
.pin-side-select { width: 100%; background: #0e0e1e; border: 1px solid #2a2a44; color: #c0c4e8; padding: 2px 3px; border-radius: 3px; font-size: 11px; cursor: pointer; }

/* ── Connector library extras ─────────────────────────────────────────────── */
.lib-section-header {
  font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  color: #555577; padding: 8px 8px 3px; border-top: 1px solid #1a1a30; margin-top: 4px;
}
.lib-section-header:first-child { border-top: none; margin-top: 0; }

.conn-item-body { flex: 1; min-width: 0; }
.conn-custom-badge {
  display: inline-block; font-size: 9px; font-weight: 600; letter-spacing: .06em;
  text-transform: uppercase; background: #2a1a4a; color: #9966ee;
  border: 1px solid #4422aa; border-radius: 3px; padding: 0 4px; vertical-align: middle;
  margin-left: 4px;
}
.lib-conn-item { display: flex; align-items: center; gap: 6px; }
.conn-edit-btn {
  flex-shrink: 0; opacity: 0; padding: 3px 6px; font-size: 12px;
  background: #1e1e3a; border-color: #3a3a5a; transition: opacity .15s;
}
.lib-conn-item:hover .conn-edit-btn { opacity: 1; }
.conn-edit-btn:hover { background: #2a2a5a; border-color: #6666aa; }

/* ── Modal ───────────────────────────────────────────────────────────────── */
#connector-modal, #drc-modal, #git-modal {
  position: fixed; inset: 0; background: rgba(0,0,0,0.65); z-index: 1000;
  align-items: center; justify-content: center;
}
.modal-box {
  background: #16162a; border: 1px solid #3a3a5a; border-radius: 8px;
  width: 480px; max-width: 94vw; max-height: 86vh;
  display: flex; flex-direction: column; box-shadow: 0 8px 40px rgba(0,0,0,0.7);
}
.modal-header {
  padding: 14px 18px 12px; border-bottom: 1px solid #222238; flex-shrink: 0;
}
.modal-header h3 { font-size: 15px; font-weight: 600; color: #c8ccee; }
.modal-body {
  padding: 14px 18px; overflow-y: auto; flex: 1;
  display: flex; flex-direction: column; gap: 10px;
}
.modal-footer {
  padding: 10px 18px; border-top: 1px solid #222238;
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}

/* ── DRC ────────────────────────────────────────────────────────────────── */
.drc-category { border: 1px solid #2a2a44; border-radius: 5px; overflow: hidden; }
.drc-cat-header {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 12px; background: #1a1a30; cursor: pointer;
  user-select: none;
}
.drc-cat-header:hover { background: #1e1e3a; }
.drc-cat-icon { font-size: 13px; }
.drc-cat-label { flex: 1; font-size: 12px; font-weight: 600; color: #c0c4e8; }
.drc-cat-count {
  font-size: 11px; font-weight: 700; background: #2a2a50;
  padding: 1px 7px; border-radius: 10px; color: #9090cc;
}
.drc-cat-body { padding: 4px 0; background: #0e0e1e; }
.drc-row {
  padding: 5px 14px; font-size: 11px; color: #a0a4c8;
  border-bottom: 1px solid #151528;
}
.drc-row:last-child { border-bottom: none; }
.drc-none { color: #444466; font-style: italic; }

/* ── Git modal ────────────────────────────────────────────────────────────── */
.git-badge {
  font-size: 11px; padding: 2px 8px; border-radius: 10px;
  background: #1a1a30; color: #8899bb; border: 1px solid #2a2a44;
}
.git-badge.git-clean  { color: #88cc88; border-color: #336633; }
.git-badge.git-dirty  { color: #ddaa44; border-color: #554422; }
.git-section { display: flex; flex-direction: column; gap: 5px; }
.git-section-title {
  font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .06em; color: #555577;
}
.git-log-row {
  display: grid; grid-template-columns: 52px 1fr 80px auto;
  align-items: center; gap: 8px;
  padding: 4px 6px; border-radius: 3px; background: #0d0d20;
  border: 1px solid transparent;
}
.git-log-row:hover { border-color: #2a2a44; }
.git-hash { font-family: monospace; color: #6688cc; font-size: 11px; }
.git-msg  { color: #bbc; font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.git-date { color: #445; font-size: 10px; text-align: right; }
.git-scope-btn {
  font-size: 10px; padding: 2px 8px;
  background: #111122; border: 1px solid #2a2a44; color: #445566; cursor: pointer;
}
.git-scope-btn:first-of-type { border-radius: 3px 0 0 3px; }
.git-scope-btn:last-of-type  { border-radius: 0 3px 3px 0; border-left: none; }
.git-scope-btn.active { background: #1a2840; border-color: #334466; color: #88aadd; }
.git-scope-btn:disabled { opacity: 0.35; cursor: default; }
.git-restore-btn {
  font-size: 10px; padding: 2px 6px;
  background: #1a2840; border: 1px solid #334466; border-radius: 3px;
  color: #88aadd; cursor: pointer; white-space: nowrap;
}
.git-restore-btn:hover { background: #223355; color: #aaccff; }

.cm-label {
  display: block; font-size: 10px; font-weight: 600; text-transform: uppercase;
  letter-spacing: .06em; color: #555577; margin-bottom: 4px;
}
.cm-input {
  width: 100%; background: #0e0e1e; border: 1px solid #2a2a44;
  color: #c0c4e8; padding: 6px 8px; border-radius: 4px; font-size: 12px; font-family: inherit;
}
.cm-input:focus { outline: none; border-color: #5566aa; }
.cm-row { display: flex; flex-direction: column; }
.cm-row-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

#cm-pin-labels {
  display: grid; grid-template-columns: 1fr 1fr; gap: 4px;
  max-height: 220px; overflow-y: auto; padding: 4px 0;
}
.pin-label-row { display: flex; align-items: center; gap: 5px; }
.pin-idx {
  width: 22px; text-align: right; flex-shrink: 0;
  font-size: 10px; font-weight: 600; color: #555577; font-family: monospace;
}
.pin-label-input {
  flex: 1; background: #0e0e1e; border: 1px solid #222238;
  color: #c0c4e8; padding: 4px 6px; border-radius: 3px; font-size: 11px; font-family: monospace;
}
.pin-label-input:focus { outline: none; border-color: #5566aa; }

.btn-primary {
  background: #1e3a6a; border-color: #4488dd; color: #88bbff; font-weight: 600;
}
.btn-primary:hover { background: #264a8a; border-color: #66aaff; }
.btn-primary:disabled { opacity: 0.5; cursor: default; }

/* Pin remove button */
.pin-del-btn {
  padding: 0 4px; font-size: 12px; line-height: 1.4;
  background: transparent; border-color: transparent; color: #ff6666;
  opacity: 0; transition: opacity .15s;
}
.pin-table tr:hover .pin-del-btn { opacity: 1; }
.pin-del-btn:hover { background: #3a1414; border-color: #aa3333; }

/* Wire drag cursor hint */
#canvas-container.wire-drag { cursor: grabbing; }

/* ── Context menu ─────────────────────────────────────────────────────────── */
#ctx-menu {
  position: fixed; z-index: 9000; display: none;
  background: #1a1a2e; border: 1px solid #3a3a66; border-radius: 6px;
  box-shadow: 0 6px 24px rgba(0,0,0,.55); padding: 4px 0; min-width: 170px;
  user-select: none;
}
#ctx-menu.open { display: block; }
.ctx-item {
  padding: 7px 14px; font-size: 12px; color: #c0c4e8; cursor: pointer;
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.ctx-item:hover { background: #2a2a50; color: #fff; }
.ctx-item.danger { color: #dd6666; }
.ctx-item.danger:hover { background: #3a1414; color: #ff8888; }
.ctx-sep { height: 1px; background: #2a2a44; margin: 4px 0; }

/* Misc */
input[type="checkbox"] { accent-color: #5588dd; width: 14px; height: 14px; cursor: pointer; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #2a2a44; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3a3a66; }
.muted { color: #444466; }
.small { font-size: 11px; }
.sep   { width: 1px; height: 22px; background: #2a2a44; margin: 0 3px; }