/* ============================================================
   CircuitForge Professional v4 — Header, Palette Dropdown,
   Canvas Labels, Drag Levelers, Bode Plotter, Property Extras
   ============================================================ */

/* ============================================================
   Top Application Menubar (replaces cluttered side palette)
   ============================================================ */
#top-menubar {
  height: 44px;
  background: linear-gradient(180deg, #10161e 0%, #0c1117 100%);
  border-bottom: 1px solid #1e3a4a;
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 10px;
  flex-shrink: 0;
  z-index: 900;
  font-family: var(--font-ui);
  user-select: none;
}

.mb-app-title {
  font-family: var(--font-ui);
  font-weight: 900;
  letter-spacing: 1.5px;
  font-size: 14px;
  color: var(--accent-cyan);
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-right: 8px;
  white-space: nowrap;
}
.mb-app-title .lite { color: var(--text-muted); font-weight: 400; font-size: 9px; letter-spacing: 2px; }

.mb-separator { width: 1px; height: 24px; background: #1e3a4a; flex-shrink: 0; }

.mb-group { display: flex; align-items: center; gap: 4px; }

.mb-btn {
  height: 30px;
  min-width: 30px;
  padding: 0 8px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  transition: all 0.15s ease;
  white-space: nowrap;
}
.mb-btn svg { width: 15px; height: 15px; flex-shrink: 0; }
.mb-btn:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.35);
  color: var(--accent-cyan);
}
.mb-btn.active {
  background: rgba(0, 212, 255, 0.16);
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.25);
}
.mb-btn.sim-run { border-color: rgba(0, 255, 136, 0.4); color: var(--accent-green); }
.mb-btn.sim-run:hover { background: rgba(0, 255, 136, 0.12); border-color: var(--accent-green); }
.mb-btn.sim-run.running { background: rgba(0, 255, 136, 0.2); box-shadow: 0 0 10px rgba(0,255,136,0.3); }
.mb-btn.danger:hover { border-color: rgba(255, 51, 68, 0.5); color: var(--accent-red); background: rgba(255,51,68,0.08); }

/* Dropdown wrappers (components / presets / themes) */
.mb-dropdown { position: relative; }
.mb-dropdown-btn .chev { font-size: 8px; margin-left: 2px; opacity: 0.7; }

.mb-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  min-width: 240px;
  max-height: min(560px, calc(100vh - 120px));
  overflow-y: auto;
  background: #10161e;
  border: 1px solid #1e3a4a;
  border-radius: 8px;
  box-shadow: 0 16px 44px rgba(0, 0, 0, 0.75);
  padding: 6px;
  display: none;
  z-index: 2000;
}
.mb-dropdown-menu.open, .mb-dropdown.open .mb-dropdown-menu { display: block; }

.mb-dropdown.right-align .mb-dropdown-menu { left: auto; right: 0; }

/* Categorized component palette menu */
#comp-dropdown-menu { min-width: 560px; }
.palette-menu-group { margin-bottom: 4px; }
.palette-menu-group-title {
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent-cyan);
  padding: 6px 8px 3px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  margin-bottom: 4px;
}
.palette-menu-items { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2px; }
.palette-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 8px;
  border-radius: 5px;
  cursor: grab;
  border: 1px solid transparent;
  transition: all 0.12s ease;
}
.palette-menu-item:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: rgba(0, 212, 255, 0.4);
}
.palette-menu-item:active { cursor: grabbing; }
.palette-thumb {
  width: 40px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  background: #0a0f15;
  border: 1px solid #223442;
  border-radius: 4px;
  flex-shrink: 0;
}
.palette-item-name {
  font-size: 11px;
  color: var(--text-primary);
  line-height: 1.25;
}

/* Preset / theme menu item rows */
.mb-menu-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.12s;
}
.mb-menu-row:hover { background: rgba(0, 212, 255, 0.1); }
.mb-menu-bullet {
  width: 8px; height: 8px; border-radius: 2px; flex-shrink: 0;
}
.mb-menu-text { font-size: 11.5px; color: var(--text-primary); }
.mb-menu-sub { font-size: 9.5px; color: var(--text-muted); margin-top: 1px; }

.theme-preview-strip { display: flex; gap: 2px; margin-left: auto; }
.theme-preview-strip span { width: 12px; height: 12px; border-radius: 2px; border: 1px solid rgba(0,0,0,0.4); }

.mb-spacer { flex: 1; }

.mb-sim-pill {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px; border-radius: 12px;
  font-size: 10px; font-weight: 700; letter-spacing: 0.5px;
  background: rgba(255,255,255,0.05); border: 1px solid #1e3a4a; color: var(--text-secondary);
}
.mb-sim-pill.active {
  background: rgba(0,255,136,0.15); border-color: var(--accent-green); color: var(--accent-green);
  box-shadow: 0 0 10px rgba(0,255,136,0.3);
}
.mb-sim-pill .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.mb-sim-pill.active .dot { animation: pulseSim 1.2s infinite; }
@keyframes pulseSim { 0%,100%{opacity:1;} 50%{opacity:0.35;} }

/* ============================================================
   Component Name & Value labels on canvas
   ============================================================ */
.comp-label {
  position: absolute;
  pointer-events: none;
  text-align: center;
  z-index: 5;
  line-height: 1.3;
}
.comp-label-name {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.3px;
  color: #b8cfdd;
  text-shadow: 0 1px 3px rgba(0,0,0,0.9);
  white-space: nowrap;
}
.comp-label-value {
  font-family: var(--font-mono);
  font-size: 9.5px;
  color: var(--accent-cyan);
  text-shadow: 0 1px 3px rgba(0,0,0,0.9);
  white-space: nowrap;
}
.circuit-comp-node.selected .comp-label-name { color: var(--accent-cyan); }

/* ============================================================
   Wire layer: ALWAYS on top of components & grid
   ============================================================ */
#wire-svg-layer {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 500;                 /* above .circuit-comp-node (z 20) */
  pointer-events: none;
  overflow: visible;
}
.wire-interactive-group { pointer-events: stroke; cursor: pointer; }
.wire-interactive-group:hover .wire-main-stroke { stroke-width: 3.5; filter: drop-shadow(0 0 6px var(--accent-cyan)); }

.wire-main-stroke {
  fill: none;
  stroke: var(--wire-default);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.wire-main-stroke.powered { stroke: var(--wire-powered); filter: drop-shadow(0 0 5px rgba(0,255,136,0.7)); }
.wire-main-stroke.clock { stroke: var(--wire-clock); stroke-dasharray: 6 3; }
.wire-main-stroke.selected { stroke: #ffffff; stroke-width: 3.2; filter: drop-shadow(0 0 8px #fff); }

.wire-temp-drawing {
  fill: none;
  stroke: var(--accent-cyan);
  stroke-width: 2;
  stroke-dasharray: 6 4;
  opacity: 0.85;
}
.wire-corner-marker {
  fill: #ffffff;
  stroke: var(--accent-cyan);
  stroke-width: 1.5;
  pointer-events: none;
}
.wire-node-dot { fill: var(--accent-cyan); pointer-events: none; }
.wire-node-dot.powered { fill: var(--accent-green); }

/* Pin labels */
.comp-pin-label {
  position: absolute;
  transform: translate(6px, -4px);
  font-size: 7.5px;
  font-family: var(--font-mono);
  color: #6b8ba0;
  pointer-events: none;
  white-space: nowrap;
  z-index: 6;
}

/* ============================================================
   DSO Linear Drag Levelers (replace ALL rotary knobs)
   ============================================================ */
.dso-leveler-v, .dso-leveler-h {
  position: relative;
  background: #0a0f15;
  border: 1px solid #3e4a5d;
  border-radius: 5px;
  cursor: ns-resize;
  touch-action: none;
  overflow: visible;
}
.dso-leveler-v { width: 34px; height: 64px; }
.dso-leveler-h { height: 26px; width: 100%; cursor: ew-resize; }

.dso-leveler-v .leveler-track,
.dso-leveler-h .leveler-track {
  position: absolute;
  background: repeating-linear-gradient(
    to bottom, rgba(255,255,255,0.05) 0 1px, transparent 1px 8px);
}
.dso-leveler-v .leveler-track { top: 3px; bottom: 3px; left: 50%; width: 2px; margin-left: -1px; }
.dso-leveler-h .leveler-track { left: 3px; right: 3px; top: 50%; height: 2px; margin-top: -1px;
  background: repeating-linear-gradient(to right, rgba(255,255,255,0.05) 0 1px, transparent 1px 8px); }

.dso-leveler-v .leveler-fill {
  position: absolute; left: 2px; right: 2px; bottom: 1px;
  height: var(--fill, 50%);
  background: linear-gradient(180deg, rgba(0,212,255,0.35), rgba(0,212,255,0.08));
  border-radius: 3px;
  pointer-events: none;
}
.dso-leveler-h .leveler-fill {
  position: absolute; top: 2px; bottom: 2px; left: 1px;
  width: var(--fill, 50%);
  background: linear-gradient(90deg, rgba(0,212,255,0.35), rgba(0,212,255,0.08));
  border-radius: 3px;
  pointer-events: none;
}

.dso-leveler-v .leveler-handle {
  position: absolute; left: -4px; right: -4px;
  bottom: calc(var(--fill, 50%) - 6px);
  height: 11px;
  background: linear-gradient(180deg, #eceff1, #90a4ae);
  border: 1px solid #546e7a;
  border-radius: 3px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.6);
  pointer-events: none;
}
.dso-leveler-v .leveler-handle::after {
  content: ''; position: absolute; top: 50%; left: 3px; right: 3px; height: 1.5px;
  background: #37474f; transform: translateY(-50%);
}
.dso-leveler-h .leveler-handle {
  position: absolute; top: -4px; bottom: -4px;
  left: calc(var(--fill, 50%) - 6px);
  width: 11px;
  background: linear-gradient(180deg, #eceff1, #90a4ae);
  border: 1px solid #546e7a;
  border-radius: 3px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.6);
  pointer-events: none;
}
.dso-leveler-h .leveler-handle::after {
  content: ''; position: absolute; left: 50%; top: 3px; bottom: 3px; width: 1.5px;
  background: #37474f; transform: translateX(-50%);
}
.dso-leveler-v.dragging, .dso-leveler-h.dragging { border-color: var(--accent-cyan); box-shadow: 0 0 8px rgba(0,212,255,0.4); }

.dso-leveler-unit { display: flex; flex-direction: column; align-items: center; gap: 4px; min-width: 60px; }
.dso-leveler-row { display: flex; gap: 14px; justify-content: space-around; align-items: flex-start; }
.dso-leveler-label { font-size: 9px; font-weight: 700; color: #b0bec5; text-transform: uppercase; }
.dso-leveler-val {
  font-size: 10px; font-family: var(--font-mono); font-weight: 700; color: #cfd8dc;
  background: rgba(0,0,0,0.45); padding: 1px 5px; border-radius: 3px; white-space: nowrap;
}
.dso-leveler-val.ch1 { color: #ffe600; }
.dso-leveler-val.ch2 { color: #00f0ff; }

/* ============================================================
   Bode Plotter Modal
   ============================================================ */
#bode-modal {
  position: fixed;
  top: 50px; left: 50%;
  transform: translateX(-50%);
  width: 960px; max-width: calc(100vw - 40px);
  height: 660px; max-height: calc(100vh - 90px);
  background: #10161e;
  border: 2px solid #2a4457;
  border-radius: 10px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.85);
  z-index: 5200;
  display: none;
  flex-direction: column;
  overflow: hidden;
  font-family: var(--font-ui);
  user-select: none;
}
#bode-modal.open { display: flex; }

.bode-header {
  height: 40px;
  background: linear-gradient(180deg, #1a2430, #131b24);
  border-bottom: 1px solid #1e3a4a;
  display: flex; align-items: center; gap: 12px;
  padding: 0 14px;
}
.bode-title { font-weight: 800; letter-spacing: 1px; font-size: 13px; color: var(--accent-cyan); }
.bode-sub { font-size: 10px; color: var(--text-muted); }
.bode-close-btn {
  margin-left: auto; width: 24px; height: 24px;
  background: #2a3340; border: 1px solid #3e4a5d; border-radius: 4px;
  color: #b0bec5; cursor: pointer;
}
.bode-close-btn:hover { background: #c62828; color: #fff; }

.bode-io-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid #1e3a4a;
  background: rgba(255,255,255,0.02);
}
.bode-field { display: flex; align-items: center; gap: 6px; flex: 1; }
.bode-field-label { font-size: 11px; font-weight: 800; color: var(--text-secondary); white-space: nowrap; }
.bode-input {
  flex: 1; min-width: 60px;
  background: #0a0f15; border: 1px solid #1e3a4a; border-radius: 5px;
  color: var(--text-primary); font-family: var(--font-mono); font-size: 12px;
  padding: 6px 10px; outline: none;
}
.bode-input:focus { border-color: var(--accent-cyan); }
.bode-apply-btn {
  height: 32px; padding: 0 16px;
  background: #0288d1; border: 1px solid #29b6f6; border-radius: 5px;
  color: #fff; font-weight: 800; font-size: 11px; cursor: pointer; letter-spacing: 0.5px;
}
.bode-apply-btn:hover { background: #039be5; }

.bode-examples {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px; border-bottom: 1px solid #1e3a4a;
  flex-wrap: wrap;
}
.bode-examples-label { font-size: 9px; font-weight: 800; letter-spacing: 1px; color: var(--text-muted); text-transform: uppercase; margin-right: 4px; }
.bode-example {
  padding: 3px 10px; border-radius: 12px;
  background: rgba(0,212,255,0.07); border: 1px solid rgba(0,212,255,0.25);
  color: var(--accent-cyan); font-size: 10px; cursor: pointer; font-family: var(--font-ui);
}
.bode-example:hover { background: rgba(0,212,255,0.18); }

#bode-error {
  display: none;
  padding: 6px 14px;
  background: rgba(255,51,68,0.12);
  color: #ffb3ba; font-size: 11px; font-family: var(--font-mono);
  border-bottom: 1px solid rgba(255,51,68,0.3);
}
#bode-formula {
  padding: 6px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-green);
  min-height: 20px;
  display: flex; align-items: center;
}
.bode-frac { display: inline-flex; flex-direction: column; text-align: center; vertical-align: middle; margin-left: 8px; }
.bode-frac span:first-child { border-bottom: 1px solid var(--accent-green); padding: 0 8px 2px; }
.bode-frac span:last-child { padding: 2px 8px 0; }

.bode-canvas-wrap { flex: 1; position: relative; min-height: 0; }
#bode-canvas { position: absolute; top: 0; left: 0; width: 100%; height: 100%; display: block; }

/* ============================================================
   Property Inspector Extras
   ============================================================ */
.prop-empty {
  color: var(--text-muted); font-size: 11px; text-align: center;
  padding: 24px 12px; line-height: 1.7; font-family: var(--font-ui);
}
.prop-toggle-btn {
  padding: 3px 14px; border-radius: 4px;
  background: #37474f; border: 1px solid #546e7a;
  color: #eceff1; font-size: 10px; font-weight: 800; cursor: pointer;
}
.prop-toggle-btn.on { background: #2e7d32; border-color: #4caf50; color: #e8ffeb; }
.prop-danger-btn {
  width: calc(100% - 24px); margin: 10px 12px;
  padding: 7px 0; border-radius: 5px;
  background: rgba(255,51,68,0.12); border: 1px solid rgba(255,51,68,0.45);
  color: #ff8a94; font-size: 11px; font-weight: 700; cursor: pointer;
  font-family: var(--font-ui); letter-spacing: 0.4px;
}
.prop-danger-btn:hover { background: rgba(255,51,68,0.25); color: #ffd2d5; }
select.prop-val-input { appearance: auto; }

/* Responsive: compact menubar on narrow screens */
@media (max-width: 1100px) {
  #comp-dropdown-menu { min-width: 460px; }
  .palette-menu-items { grid-template-columns: 1fr 1fr; }
  .mb-btn .mb-text { display: none; }
  .mb-btn { padding: 0 6px; }
}