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

:root {
  --bg:          #090d12;
  --bg2:         #0d1520;
  --bg3:         #111c2a;
  --border:      #1e2d42;
  --border2:     #2a3f5a;
  --accent:      #1e6fff;
  --accent2:     #3d8bff;
  --text:        #c8d8ec;
  --text2:       #7a99bb;
  --text3:       #3d5a7a;
  --grid-dot:    rgba(30,111,255,0.12);
  --node-bg:     #0d1a28;
  --node-border: #1e3048;
  --shadow:      0 4px 24px rgba(0,0,0,0.6);
  --radius:      6px;

  /* status colors */
  --s-planned:  #3d5a7a;
  --s-active:   #1e6fff;
  --s-done:     #1a9e5c;
  --s-blocked:  #c0392b;

  /* project colors */
  --c0: #1e6fff;
  --c1: #1a9e5c;
  --c2: #d4851a;
  --c3: #9b4dca;
  --c4: #c0392b;
  --c5: #16a085;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 13px;
  user-select: none;
}

/* ── TOP BAR ─────────────────────────────────── */
#topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 40px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  z-index: 100;
  gap: 8px;
}

#topbar-left, #topbar-center, #topbar-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

#logo {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--accent2);
  margin-right: 12px;
}

#save-status {
  font-size: 11px;
  color: var(--text3);
  margin-left: 6px;
}
#save-status.saving { color: var(--accent); }
#save-status.error  { color: var(--s-blocked); }

.tb-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text2);
  padding: 4px 9px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  transition: all 0.1s;
}
.tb-btn:hover  { background: var(--bg3); border-color: var(--border); color: var(--text); }
.tb-btn.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.tb-sep {
  width: 1px;
  height: 18px;
  background: var(--border);
  margin: 0 4px;
}

/* ── CANVAS ──────────────────────────────────── */
#canvas-wrap {
  position: fixed;
  top: 40px; left: 0; right: 0; bottom: 0;
  overflow: hidden;
  cursor: default;
}

#grid-canvas {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
}

#board {
  position: absolute;
  top: 0; left: 0;
  width: 0; height: 0;
  transform-origin: 0 0;
}

/* SVG edge layer lives inside #board */
#edge-svg {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
  overflow: visible;
}

/* ── NODES ───────────────────────────────────── */
.node {
  position: absolute;
  width: 220px;
  background: var(--node-bg);
  border: 1.5px solid var(--node-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: grab;
  transition: border-color 0.15s, box-shadow 0.15s;
  min-width: 180px;
}
.node:hover       { border-color: var(--border2); }
.node.selected    { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(30,111,255,0.25), var(--shadow); }
.node.connecting-source { border-color: #f59e0b; box-shadow: 0 0 0 2px rgba(245,158,11,0.3); }
.node:active      { cursor: grabbing; }

.node-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 8px 10px 7px;
  border-bottom: 1px solid var(--node-border);
  position: relative;
}

.node-color-bar {
  width: 3px;
  height: 100%;
  position: absolute;
  left: 0; top: 0;
  border-radius: var(--radius) 0 0 0;
}

.node-type-icon {
  font-size: 11px;
  color: var(--text3);
  flex-shrink: 0;
  margin-left: 6px;
}

.node-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.node-status {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 10px;
  text-transform: uppercase;
  flex-shrink: 0;
}
.st-planned { background: rgba(61,90,122,0.3);  color: var(--s-planned); }
.st-active  { background: rgba(30,111,255,0.2); color: var(--accent2); }
.st-done    { background: rgba(26,158,92,0.2);  color: var(--s-done); }
.st-blocked { background: rgba(192,57,43,0.2);  color: var(--s-blocked); }

.node-body {
  padding: 8px 10px;
  font-size: 11px;
  color: var(--text2);
  line-height: 1.55;
}

.node-dates {
  font-size: 10px;
  color: var(--text3);
  margin-bottom: 4px;
}

.node-milestone {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: 3px;
  padding: 4px 7px;
  font-size: 10px;
  color: #d4851a;
  margin-bottom: 4px;
}

.node-tasks-count {
  font-size: 10px;
  color: var(--text3);
}

/* Port dots — connection points on left and right */
.node-port {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bg3);
  border: 1.5px solid var(--border2);
  cursor: crosshair;
  transition: background 0.1s, border-color 0.1s, transform 0.1s;
  z-index: 10;
}
.node-port:hover { background: var(--accent); border-color: var(--accent); transform: scale(1.3); }
.node-port.port-in  { left: -6px;  top: 50%; transform: translateY(-50%); }
.node-port.port-out { right: -6px; top: 50%; transform: translateY(-50%); }
.node-port.port-in:hover  { transform: translateY(-50%) scale(1.3); }
.node-port.port-out:hover { transform: translateY(-50%) scale(1.3); }

/* ── EDGES ───────────────────────────────────── */
.edge-path {
  fill: none;
  stroke: var(--border2);
  stroke-width: 1.5;
  stroke-dasharray: none;
  transition: stroke 0.15s;
}
.edge-path:hover { stroke: var(--accent2); stroke-width: 2; cursor: pointer; }
.edge-path.selected { stroke: var(--accent); stroke-width: 2; }

.edge-label {
  font-size: 10px;
  fill: var(--text3);
  pointer-events: none;
}

/* drag preview line */
#drag-edge {
  fill: none;
  stroke: #f59e0b;
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
  pointer-events: none;
}

/* ── SIDE PANELS ─────────────────────────────── */
.side-panel {
  position: fixed;
  top: 40px;
  right: 0;
  bottom: 0;
  width: 320px;
  background: var(--bg2);
  border-left: 1px solid var(--border);
  transform: translateX(100%);
  transition: transform 0.2s ease;
  z-index: 90;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.side-panel.open { transform: translateX(0); }

.left-panel {
  right: auto;
  left: 0;
  border-left: none;
  border-right: 1px solid var(--border);
  transform: translateX(-100%);
}
.left-panel.open { transform: translateX(0); }

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}
.panel-header button {
  background: transparent;
  border: none;
  color: var(--text2);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 3px;
}
.panel-header button:hover { color: var(--text); background: var(--bg3); }

#detail-body, #projects-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px;
}

/* detail panel field groups */
.dp-section { margin-bottom: 14px; }
.dp-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 5px;
}
.dp-value {
  font-size: 12px;
  color: var(--text);
  line-height: 1.55;
}
.dp-milestone {
  background: rgba(245,158,11,0.08);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: 4px;
  padding: 6px 9px;
  font-size: 12px;
  color: #d4851a;
}
.dp-task-list { list-style: none; padding: 0; }
.dp-task-list li {
  padding: 3px 0 3px 12px;
  position: relative;
  font-size: 12px;
  color: var(--text2);
}
.dp-task-list li::before { content: '·'; position: absolute; left: 3px; color: var(--text3); }

.dp-btn-row { display: flex; gap: 6px; margin-top: 12px; }

/* project list */
.proj-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  margin-bottom: 4px;
  border: 1px solid transparent;
}
.proj-item:hover { background: var(--bg3); border-color: var(--border); }
.proj-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.proj-name { font-size: 13px; color: var(--text); flex: 1; }
.proj-actions { display: flex; gap: 4px; opacity: 0; }
.proj-item:hover .proj-actions { opacity: 1; }
.proj-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text2);
  padding: 2px 6px;
  border-radius: 3px;
  cursor: pointer;
  font-size: 11px;
}
.proj-btn:hover { background: var(--bg3); color: var(--text); }
.proj-btn.danger { color: var(--s-blocked); border-color: rgba(192,57,43,0.3); }
.proj-btn.danger:hover { background: rgba(192,57,43,0.1); }

.full-btn {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text2);
  padding: 7px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-family: inherit;
  margin-bottom: 10px;
}
.full-btn:hover { background: var(--border); color: var(--text); }

/* ── ZOOM BADGE ──────────────────────────────── */
#zoom-badge {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text2);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  pointer-events: none;
}

/* ── MINIMAP ─────────────────────────────────── */
#minimap {
  position: absolute;
  bottom: 12px;
  right: 12px;
  width: 160px;
  height: 100px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
}

/* ── MODALS ──────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.modal {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  padding: 20px;
  width: 440px;
  max-width: 95vw;
  max-height: 90vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow);
}
.modal h3 { font-size: 15px; font-weight: 600; color: var(--text); }

.modal label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.modal input[type="text"],
.modal input[type="date"],
.modal textarea,
.modal select {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 4px;
  color: var(--text);
  padding: 7px 9px;
  font-size: 13px;
  font-family: inherit;
  width: 100%;
}
.modal input:focus,
.modal textarea:focus,
.modal select:focus {
  outline: none;
  border-color: var(--accent);
}
.modal textarea { resize: vertical; min-height: 60px; }
.modal select option { background: var(--bg3); }

.modal-actions { display: flex; gap: 8px; margin-top: 4px; }
.modal-actions button:first-child {
  background: var(--accent);
  border: none;
  color: #fff;
  padding: 7px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
}
.modal-actions button:first-child:hover { background: var(--accent2); }
.modal-actions button:not(:first-child) {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text2);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-family: inherit;
}
.modal-actions button:not(:first-child):hover { background: var(--bg3); color: var(--text); }

/* Color swatches */
.color-swatches {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  margin-top: 2px;
}
.swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.1s;
}
.swatch:hover { transform: scale(1.2); }
.swatch.selected { border-color: #fff; transform: scale(1.15); }

/* ── CONTEXT MENU ────────────────────────────── */
#ctx-menu {
  position: fixed;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--radius);
  min-width: 160px;
  z-index: 300;
  box-shadow: var(--shadow);
  padding: 4px 0;
}
.ctx-item {
  padding: 7px 14px;
  font-size: 12px;
  color: var(--text2);
  cursor: pointer;
}
.ctx-item:hover { background: var(--bg3); color: var(--text); }
.ctx-item.danger { color: var(--s-blocked); }
.ctx-sep { height: 1px; background: var(--border); margin: 3px 0; }

/* ── SCROLLBARS ──────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }