/* ============================================================
   Quantum Lab — UI futuristic stil IBM Quantum Composer
   ============================================================ */
:root {
  --bg-0: #05060d;
  --bg-1: #0a0d1c;
  --bg-2: #11152a;
  --bg-3: #181d38;
  --line: #2a3158;
  --line-soft: #1a1f3a;
  --txt: #e6ecff;
  --txt-dim: #8b94c8;
  --txt-mute: #5b638e;
  --accent: #6ee7ff;
  --accent-2: #a78bfa;
  --accent-3: #f472b6;
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #fb7185;
  --ibm: #0f62fe;
  --gate-bg: #1f2750;
  --gate-bg-2: #273063;
  --gate-h:  #6ee7ff;
  --gate-x:  #f472b6;
  --gate-y:  #f59e0b;
  --gate-z:  #a78bfa;
  --gate-cx: #34d399;
  --gate-rot: #60a5fa;
  --gate-meas: #fbbf24;
  --gate-special: #94a3b8;
  --shadow-glow: 0 0 24px rgba(110, 231, 255, .25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: 'Inter', 'SF Pro Display', system-ui, -apple-system, sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, #1a224a 0%, transparent 60%),
    radial-gradient(800px 500px at -10% 100%, #2a1a4a 0%, transparent 50%),
    var(--bg-0);
  color: var(--txt);
  overflow: hidden;
  font-size: 14px;
  line-height: 1.5;
}

/* ---------------- TOPBAR ---------------- */

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(15,18,40,.95), rgba(10,12,28,.85));
  backdrop-filter: blur(8px);
  position: relative; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand h1 { margin: 0; font-size: 20px; letter-spacing: .5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent; font-weight: 700;
}
.brand .subtitle { color: var(--txt-dim); font-size: 11.5px; }
.logo-orb {
  width: 36px; height: 36px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff 0%, var(--accent) 25%, var(--accent-2) 60%, #1a1140 100%);
  box-shadow: 0 0 24px var(--accent), inset 0 0 12px rgba(0,0,0,.4);
  animation: orb-pulse 4s ease-in-out infinite;
}
@keyframes orb-pulse {
  0%,100% { box-shadow: 0 0 18px var(--accent), inset 0 0 10px rgba(0,0,0,.4); }
  50%     { box-shadow: 0 0 32px var(--accent-2), inset 0 0 14px rgba(0,0,0,.4); }
}
.topbar-controls { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.qubits-control, .shots-control {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg-2); border: 1px solid var(--line);
  padding: 4px 10px; border-radius: 8px;
}
.qubits-control label, .shots-control label { color: var(--txt-dim); font-size: 12px; }
#qubits-count { min-width: 18px; text-align: center; font-weight: 600; }
.shots-control input { width: 70px; background: transparent; border: 0; color: var(--txt); font-size: 13px; }
.shots-control input:focus { outline: none; }

/* ---------------- BUTTONS ---------------- */

.btn {
  border: 0; padding: 8px 14px; border-radius: 8px;
  font-size: 13px; font-weight: 500; cursor: pointer;
  transition: all .15s ease;
  background: var(--bg-3); color: var(--txt);
  border: 1px solid var(--line);
}
.btn:hover { background: var(--bg-2); border-color: var(--accent); }
.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0f1f; font-weight: 600;
  border-color: transparent;
}
.btn.primary:hover { filter: brightness(1.1); box-shadow: var(--shadow-glow); }
.btn.ibm { background: var(--ibm); color: white; border-color: transparent; }
.btn.ibm:hover { background: #0353d3; box-shadow: 0 0 18px rgba(15, 98, 254, .4); }
.btn.ghost { background: transparent; }
.btn.block { width: 100%; }
.btn-tiny {
  background: var(--bg-3); color: var(--txt); border: 1px solid var(--line);
  padding: 4px 8px; border-radius: 6px; font-size: 12px; cursor: pointer;
}
.btn-tiny:hover { border-color: var(--accent); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

/* ---------------- LAYOUT ---------------- */

.app {
  display: grid;
  grid-template-columns: 230px 1fr 380px;
  height: calc(100vh - 65px);
  gap: 12px; padding: 12px;
}
.panel {
  background: linear-gradient(180deg, rgba(20,24,52,.6), rgba(10,12,28,.6));
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 0;
}
.panel-header {
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  font-weight: 600; font-size: 13px; letter-spacing: .5px;
  color: var(--accent);
  text-transform: uppercase;
}

/* ---------------- PALETTE ---------------- */

.palette { overflow-y: auto; }
.palette-section { padding: 10px 12px; border-bottom: 1px solid var(--line-soft); }
.palette-title { color: var(--txt-dim); font-size: 11px; text-transform: uppercase; letter-spacing: .8px; margin-bottom: 8px; }
.palette-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }

.gate-chip {
  display: flex; align-items: center; justify-content: center;
  background: var(--gate-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  height: 36px; cursor: grab;
  font-weight: 600; font-size: 13px;
  color: var(--txt);
  transition: all .15s ease;
  user-select: none;
  position: relative;
}
.gate-chip:hover { border-color: var(--accent); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.4); }
.gate-chip:active { cursor: grabbing; }
.gate-chip.dragging { opacity: .5; }

.gate-chip[data-key="h"]      { background: linear-gradient(135deg, var(--gate-h),  #2a4d7a); }
.gate-chip[data-key="x"]      { background: linear-gradient(135deg, var(--gate-x),  #5a1f4a); color: #fff; }
.gate-chip[data-key="y"]      { background: linear-gradient(135deg, var(--gate-y),  #5a3f1f); color: #fff; }
.gate-chip[data-key="z"]      { background: linear-gradient(135deg, var(--gate-z),  #3a1f5a); color: #fff; }
.gate-chip[data-key="cx"],
.gate-chip[data-key="cy"],
.gate-chip[data-key="cz"],
.gate-chip[data-key="ch"],
.gate-chip[data-key="swap"],
.gate-chip[data-key="iswap"]  { background: linear-gradient(135deg, var(--gate-cx), #1f5a3f); color: #0a1a14; }
.gate-chip[data-key="ccx"],
.gate-chip[data-key="cswap"]  { background: linear-gradient(135deg, #fb7185, #5a1f2f); color: #fff; }
.gate-chip[data-key="rx"],
.gate-chip[data-key="ry"],
.gate-chip[data-key="rz"],
.gate-chip[data-key="p"],
.gate-chip[data-key="u"],
.gate-chip[data-key="crx"],
.gate-chip[data-key="cry"],
.gate-chip[data-key="crz"],
.gate-chip[data-key="cp"]     { background: linear-gradient(135deg, var(--gate-rot), #1f3a5a); color: #fff; }
.gate-chip[data-key="measure"]{ background: linear-gradient(135deg, var(--gate-meas), #5a4a1f); color: #1a1305; }
.gate-chip[data-key="barrier"]{ background: var(--bg-3); color: var(--txt-dim); }
.gate-chip[data-key="delay"]{ background: linear-gradient(135deg, var(--gate-y), #5a3f1f); color: #1a1305; font-style: italic; }

.preset-list { display: flex; flex-direction: column; gap: 4px; }
.preset {
  background: var(--bg-2); border: 1px solid var(--line); color: var(--txt);
  padding: 6px 10px; border-radius: 6px; font-size: 12px; cursor: pointer; text-align: left;
}
.preset:hover { border-color: var(--accent); background: var(--bg-3); }

/* ---------------- COMPOSER ---------------- */

.composer { background: var(--bg-1); border: 1px solid var(--line); border-radius: 12px;
  display: flex; flex-direction: column; overflow: hidden; min-width: 0; }
.composer-header {
  padding: 10px 14px; border-bottom: 1px solid var(--line);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
  background: rgba(10,12,28,.5);
}
.composer-actions { display: flex; gap: 6px; }
.hint { color: var(--txt-dim); font-size: 12px; }

.circuit-wrap { flex: 1; overflow: auto; padding: 18px; min-height: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 49px, rgba(106,140,255,.03) 49px 50px),
    var(--bg-1);
}
.circuit { position: relative; min-width: 100%; min-height: 100%; }

.lane {
  display: flex; align-items: center; height: 64px; position: relative;
}
.lane-label {
  width: 42px; flex-shrink: 0;
  font-family: 'JetBrains Mono', 'SF Mono', monospace;
  font-size: 13px; color: var(--accent);
  text-align: right; padding-right: 10px;
}
.lane-track {
  flex: 1; position: relative; height: 100%;
  display: flex; align-items: center;
}
.lane-track::before {
  content: ''; position: absolute; left: 0; right: 0; top: 50%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent) 5%, var(--accent) 95%, transparent 100%);
  opacity: .35;
  transform: translateY(-50%);
}
.lane-track.cl::before { background: var(--txt-mute); opacity: .4; height: 1px;
  top: calc(50% + 3px); }
.lane-track.cl::after  { content: ''; position: absolute; left: 0; right: 0;
  top: calc(50% - 3px); height: 1px; background: var(--txt-mute); opacity: .4; }

/* time slots */
.slot {
  width: 50px; height: 50px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 1;
}
.slot.empty:hover .slot-hint {
  opacity: 1;
}
.slot-hint {
  width: 38px; height: 38px;
  border: 1px dashed var(--line);
  border-radius: 6px;
  opacity: 0;
  transition: opacity .15s;
}
.slot.drop-target .slot-hint {
  opacity: 1; border-color: var(--accent);
  background: rgba(110, 231, 255, .08);
  box-shadow: 0 0 12px rgba(110, 231, 255, .3);
}
.slot.target-pick .slot-hint {
  opacity: 1; border: 2px solid var(--accent-3);
  background: rgba(244, 114, 182, .12);
  animation: pick-pulse 1s ease-in-out infinite;
  cursor: crosshair;
}
@keyframes pick-pulse { 50% { box-shadow: 0 0 14px var(--accent-3); } }

/* placed gate */
.gate {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  background: var(--gate-bg-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 600; font-size: 13px;
  cursor: pointer;
  position: relative; z-index: 2;
  transition: all .15s ease;
}
.gate:hover { border-color: var(--err); }
.gate .gate-param { position: absolute; bottom: -14px; font-size: 9px;
  color: var(--txt-dim); white-space: nowrap;
  font-family: 'JetBrains Mono', monospace;
}

.gate.h      { background: linear-gradient(135deg, var(--gate-h),  #2a4d7a); }
.gate.x      { background: linear-gradient(135deg, var(--gate-x),  #5a1f4a); color: #fff; }
.gate.y      { background: linear-gradient(135deg, var(--gate-y),  #5a3f1f); color: #fff; }
.gate.z, .gate.s, .gate.t, .gate.sdg, .gate.tdg, .gate.sx, .gate.sxdg, .gate.id {
  background: linear-gradient(135deg, var(--gate-z), #3a1f5a); color: #fff; }
.gate.rotation { background: linear-gradient(135deg, var(--gate-rot), #1f3a5a); color: #fff; }
.gate.measure {
  background: linear-gradient(135deg, var(--gate-meas), #5a4a1f); color: #1a1305;
}
.gate.barrier {
  background: transparent;
  border: 0;
  width: 14px; height: 38px;
  border-left: 2px dashed var(--txt-mute);
  border-right: 2px dashed var(--txt-mute);
  border-radius: 0;
  opacity: .55;
}
.gate.barrier:hover { opacity: 1; border-color: var(--err); }
.gate.delay {
  background: linear-gradient(135deg, var(--gate-y), #5a3f1f);
  color: #1a1305;
  font-style: italic;
  font-size: 12px;
  border-color: rgba(245, 158, 11, .55);
  box-shadow: 0 0 8px rgba(245, 158, 11, .25);
}
.gate.delay .gate-param { color: var(--gate-y); font-weight: 600; }

/* control dot for cx/cz */
.gate.control {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--accent); border: 0;
  box-shadow:
    0 0 0 4px rgba(110, 231, 255, .12),
    0 0 10px rgba(110, 231, 255, .55);
  transition: all .15s ease;
}
.gate.control:hover {
  background: var(--err);
  box-shadow:
    0 0 0 4px rgba(251, 113, 133, .15),
    0 0 12px rgba(251, 113, 133, .6);
}

/* CNOT target — cerc plin cu crucea desenata via pseudo-elemente
   (background: var(--bg-1) "punch-uieste" linia de legatura prin centru) */
.gate.target-x {
  width: 34px; height: 34px;
  background: var(--bg-1);
  border: 2px solid var(--accent);
  border-radius: 50%;
  color: transparent;
  font-size: 0;
  box-shadow: 0 0 10px rgba(110, 231, 255, .35);
  position: relative;
  transition: all .15s ease;
}
.gate.target-x::before,
.gate.target-x::after {
  content: '';
  position: absolute;
  background: var(--accent);
  border-radius: 1px;
  transition: background .15s ease;
}
.gate.target-x::before {  /* brat orizontal */
  left: 5px; right: 5px;
  top: 50%; height: 2px;
  transform: translateY(-50%);
}
.gate.target-x::after {   /* brat vertical */
  top: 5px; bottom: 5px;
  left: 50%; width: 2px;
  transform: translateX(-50%);
}
.gate.target-x:hover {
  border-color: var(--err);
  box-shadow: 0 0 14px rgba(251, 113, 133, .55);
}
.gate.target-x:hover::before,
.gate.target-x:hover::after { background: var(--err); }

/* vertical link line for multi-qubit gates */
.link-line {
  position: absolute;
  width: 2px; background: var(--accent);
  border-radius: 1px;
  box-shadow: 0 0 6px rgba(110, 231, 255, .35);
  z-index: 1; pointer-events: none;
}
.link-line.barrier-line {
  width: 0;
  background: transparent;
  box-shadow: none;
  border-left: 2px dashed var(--txt-mute);
  opacity: .55;
}
.link-line.delay-line {
  width: 0;
  background: transparent;
  box-shadow: none;
  border-left: 2px dashed var(--gate-y);
  opacity: .65;
}

/* ---------------- SIDEPANEL ---------------- */

.sidepanel { display: flex; flex-direction: column; min-height: 0; }
.tabs { display: flex; border-bottom: 1px solid var(--line); }
.tab {
  flex: 1; background: transparent; color: var(--txt-dim); border: 0; padding: 10px;
  font-size: 12px; cursor: pointer; border-bottom: 2px solid transparent;
}
.tab:hover { color: var(--txt); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-pane { display: none; flex: 1; flex-direction: column; min-height: 0; padding: 12px; overflow: hidden; }
.tab-pane.active { display: flex; }

/* results */
.empty { color: var(--txt-mute); padding: 30px 10px; text-align: center; font-size: 13px; }
.results { display: flex; flex-direction: column; gap: 12px; overflow-y: auto; }
.results.hidden { display: none; }
.results-meta {
  display: flex; gap: 16px; flex-wrap: wrap;
  padding: 10px; background: var(--bg-2); border-radius: 8px; font-size: 12px;
}
.results-meta b { color: var(--accent); }
.results-chart {
  background: var(--bg-2); border-radius: 8px; padding: 14px;
}
.bar-row { display: flex; align-items: center; gap: 8px; margin: 4px 0; }
.bar-label {
  font-family: 'JetBrains Mono', monospace; font-size: 12px;
  color: var(--txt-dim); width: 90px; text-align: right;
}
.bar-track { flex: 1; height: 22px; background: var(--bg-3); border-radius: 4px; overflow: hidden; position: relative; }
.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 4px;
  transition: width .4s ease;
}
.bar-value { position: absolute; right: 6px; top: 50%; transform: translateY(-50%);
  font-size: 11px; color: #fff; font-family: 'JetBrains Mono', monospace; }
.results-details { background: var(--bg-2); border-radius: 8px; padding: 8px 12px; }
.results-details summary { cursor: pointer; color: var(--txt-dim); font-size: 12px; }
.results-actions {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--bg-2); border-radius: 8px; padding: 10px 12px;
  margin-top: 4px;
}
.results-actions .btn { width: 100%; }
.empty-actions { padding: 0 10px 10px; text-align: center; }
.empty-actions .btn { font-size: 12px; }

.results-details pre {
  font-family: 'JetBrains Mono', monospace; font-size: 11px;
  color: var(--txt-dim); white-space: pre-wrap; word-break: break-all;
  max-height: 240px; overflow: auto; margin: 8px 0 0;
}

/* chat */
.chat-log { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding: 4px; }
.chat-msg { display: flex; }
.chat-msg.user { justify-content: flex-end; }
.chat-bubble {
  max-width: 85%; padding: 9px 13px; border-radius: 12px;
  background: var(--bg-2); border: 1px solid var(--line);
  font-size: 13px; line-height: 1.55; word-wrap: break-word;
}
.chat-bubble pre {
  background: var(--bg-0); padding: 8px 10px; border-radius: 6px;
  font-size: 11px; overflow: auto;
  font-family: 'JetBrains Mono', monospace;
}
.chat-bubble code { font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.chat-msg.user .chat-bubble {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0f1f; border-color: transparent;
}
.chat-msg.system .chat-bubble { background: var(--bg-3); border-color: var(--line); }
.chat-msg.assistant .chat-bubble { border-color: rgba(110, 231, 255, .35); }
.chat-bubble ul { margin: 4px 0; padding-left: 18px; }

.chat-circuit-action {
  margin-top: 8px; padding: 8px;
  background: rgba(110, 231, 255, .1); border: 1px solid var(--accent);
  border-radius: 6px;
}
.chat-circuit-action button { margin-top: 6px; }

.chat-attachments {
  display: flex; flex-wrap: wrap; gap: 4px; padding: 6px 0;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
}
.chat-attachments.hidden { display: none; }
.chat-attachments .att-label { color: var(--txt-mute); margin-right: 4px; align-self: center; }
.chat-attachments .att-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 8px;
  background: rgba(110, 231, 255, .08);
  border: 1px solid rgba(110, 231, 255, .35);
  border-radius: 12px;
  color: var(--accent); font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
}
.chat-attachments .att-chip button {
  background: transparent; border: 0; color: var(--txt-mute);
  cursor: pointer; padding: 0; font-size: 14px; line-height: 1;
}
.chat-attachments .att-chip button:hover { color: var(--err); }

.chat-mode-bar {
  display: flex; gap: 8px; align-items: center; justify-content: space-between;
  padding: 6px 0; border-top: 1px solid var(--line);
}
.builder-toggle { display: flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; font-size: 12px; color: var(--txt-dim); }
.builder-toggle input { display: none; }
.toggle-track {
  width: 32px; height: 18px; background: var(--bg-3);
  border: 1px solid var(--line); border-radius: 10px;
  position: relative; transition: all .2s;
}
.toggle-thumb {
  position: absolute; top: 1px; left: 1px;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--txt-mute); transition: all .2s;
}
.builder-toggle input:checked + .toggle-track {
  background: linear-gradient(135deg, var(--accent-3), var(--accent-2));
  border-color: var(--accent-3);
}
.builder-toggle input:checked + .toggle-track .toggle-thumb {
  left: 15px; background: #fff;
}
.builder-toggle input:checked ~ .toggle-label { color: var(--accent-3); font-weight: 600; }
.btn-restart { font-size: 12px; padding: 4px 10px; border-color: var(--accent-3); color: var(--accent-3); }
.btn-restart:hover { background: rgba(244, 114, 182, .1); }
.btn-restart.hidden { display: none; }
.btn-restart.spinning { animation: spin 1s linear infinite; pointer-events: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.chat-msg.builder .chat-bubble {
  background: rgba(244, 114, 182, .08);
  border-color: var(--accent-3);
}
.chat-msg.builder .chat-bubble::before {
  content: '🔧 Mod constructor — Claude editeaza codul';
  display: block;
  font-size: 11px; color: var(--accent-3);
  margin-bottom: 6px; font-weight: 600;
}

.chat-input { display: flex; flex-direction: column; gap: 6px; padding-top: 8px; border-top: 1px solid var(--line); }
.chat-input textarea {
  resize: vertical; min-height: 60px; max-height: 200px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--txt);
  padding: 8px 10px; border-radius: 8px; font-size: 13px;
  font-family: inherit;
}
.chat-input textarea:focus { outline: none; border-color: var(--accent); }
.chat-actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.checkbox-inline { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--txt-dim); }
.checkbox-inline input { accent-color: var(--accent); }

/* docs */
.upload-area { margin-bottom: 10px; }
.upload-zone {
  display: flex; flex-direction: column; align-items: center;
  padding: 20px; border: 2px dashed var(--line);
  border-radius: 10px; cursor: pointer;
  transition: all .15s ease; text-align: center;
  color: var(--txt-dim);
}
.upload-zone:hover { border-color: var(--accent); color: var(--txt); background: rgba(110, 231, 255, .03); }
.upload-icon { font-size: 28px; margin-bottom: 6px; color: var(--accent); }
.upload-sub { font-size: 11px; margin-top: 4px; color: var(--txt-mute); }
#file-input { display: none; }

.docs-list { flex: 1; overflow-y: auto; min-height: 60px; margin-bottom: 8px; }
.doc-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 6px; margin-bottom: 4px; font-size: 12px;
}
.doc-item .doc-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-item .doc-size { color: var(--txt-mute); font-family: 'JetBrains Mono', monospace; }
.doc-item button { padding: 2px 6px; font-size: 11px; }

#doc-prompt {
  resize: vertical; min-height: 60px;
  background: var(--bg-2); border: 1px solid var(--line); color: var(--txt);
  padding: 8px 10px; border-radius: 8px; font-size: 13px;
  margin-bottom: 8px;
  font-family: inherit;
}
#doc-prompt:focus { outline: none; border-color: var(--accent); }

/* ibm */
.ibm-form { display: flex; flex-direction: column; gap: 8px; overflow-y: auto; }
.ibm-form label { font-size: 12px; color: var(--txt-dim); }
.ibm-form input, .ibm-form select {
  background: var(--bg-2); border: 1px solid var(--line); color: var(--txt);
  padding: 8px 10px; border-radius: 6px; font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
}
.ibm-form input:focus, .ibm-form select:focus { outline: none; border-color: var(--accent); }
.ibm-form small { color: var(--txt-mute); font-size: 11px; }
.ibm-token-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.ibm-token-row small { flex: 1; min-width: 140px; }
#ibm-token-status { font-size: 11px; color: var(--txt-mute); }
#ibm-token-status.saved { color: var(--ok); font-weight: 600; }
#btn-ibm-clear-token.hidden { display: none; }

.ibm-dashboard-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 8px;
  background: linear-gradient(135deg, rgba(110, 145, 255, .12), rgba(180, 110, 255, .08));
  border: 1px solid rgba(140, 160, 255, .35);
  color: var(--txt); text-decoration: none;
  transition: border-color .15s, background .15s, transform .05s;
}
.ibm-dashboard-link:hover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(110, 145, 255, .18), rgba(180, 110, 255, .14));
}
.ibm-dashboard-link:active { transform: translateY(1px); }
.ibm-dashboard-icon {
  font-size: 22px; line-height: 1;
  color: #9ab1ff;
  flex-shrink: 0;
}
.ibm-dashboard-text { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.ibm-dashboard-text b { font-size: 13px; }
.ibm-dashboard-text small { color: var(--txt-mute); font-size: 11px; }
.ibm-dashboard-arrow { color: var(--txt-dim); font-size: 16px; flex-shrink: 0; }
.ibm-dashboard-link:hover .ibm-dashboard-arrow { color: var(--accent); }

.ibm-server-banner {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  padding: 8px 10px; border-radius: 6px;
  background: rgba(110, 231, 255, .08);
  border: 1px solid rgba(110, 231, 255, .35);
  color: var(--ok); font-size: 12px;
}
.ibm-server-banner.hidden { display: none; }
.ibm-server-banner code {
  font-family: 'JetBrains Mono', monospace; color: var(--txt-dim);
  background: var(--bg-2); padding: 1px 6px; border-radius: 4px;
}
.ibm-server-banner span { flex: 1; }

.ibm-usage {
  padding: 10px 12px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 6px; font-size: 12px; line-height: 1.5;
}
.ibm-usage.hidden { display: none; }
.ibm-usage .u-title { font-weight: 600; color: var(--accent); margin-bottom: 6px; }
.ibm-usage .u-bar {
  height: 8px; background: var(--bg-1); border-radius: 4px; overflow: hidden;
  margin: 6px 0 4px; border: 1px solid var(--line);
}
.ibm-usage .u-bar > span {
  display: block; height: 100%;
  background: linear-gradient(90deg, var(--ok), var(--accent));
}
.ibm-usage .u-bar.warn > span { background: linear-gradient(90deg, var(--warn), #f0c674); }
.ibm-usage .u-bar.danger > span { background: linear-gradient(90deg, var(--err), #ff7676); }
.ibm-usage .u-row { display: flex; gap: 12px; flex-wrap: wrap; color: var(--txt-dim); }
.ibm-usage .u-row b { color: var(--txt); font-family: 'JetBrains Mono', monospace; }
.ibm-usage .u-instance { margin-top: 8px; padding-top: 8px; border-top: 1px dashed var(--line); }
.ibm-usage .u-period { color: var(--txt-mute); font-size: 11px; margin-top: 6px; }
.ibm-form hr { border: 0; border-top: 1px solid var(--line); margin: 6px 0; }
.ibm-row { display: flex; gap: 6px; align-items: center; }
.ibm-row .btn { flex-shrink: 0; }
.ibm-row select { flex: 1; }
.ibm-backends { display: flex; flex-direction: column; gap: 4px; max-height: 220px; overflow-y: auto; }
.ibm-backend {
  display: flex; gap: 8px; align-items: center;
  padding: 6px 10px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 6px; font-size: 12px; cursor: pointer;
}
.ibm-backend:hover { border-color: var(--accent); }
.ibm-backend.selected { border-color: var(--accent); background: rgba(110, 231, 255, .06); }
.ibm-backend .name { flex: 1; font-family: 'JetBrains Mono', monospace; }
.ibm-backend .qubits { color: var(--accent); }
.ibm-backend .pending { color: var(--txt-mute); font-size: 11px; }
.ibm-backend.simulator { opacity: .8; }
.ibm-backend.simulator .name::after { content: ' (sim)'; color: var(--txt-mute); }

.ibm-jobs { display: flex; flex-direction: column; gap: 6px; }
.ibm-job {
  padding: 8px 10px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 6px; font-size: 12px;
}
.ibm-job .job-id { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--txt-dim); }
.ibm-job .job-status { font-weight: 600; }
.ibm-job .job-status.running { color: var(--warn); }
.ibm-job .job-status.done { color: var(--ok); }

/* help tab */
.help-content { overflow-y: auto; padding-right: 4px; }
.help-section { margin-bottom: 20px; }
.help-section h3 {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--accent);
  letter-spacing: .3px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
}
.help-card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 6px;
}
.help-card h4 {
  margin: 0 0 4px;
  font-size: 13px;
  color: var(--accent-2);
  font-weight: 600;
}
.help-card p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--txt-dim);
}
.help-card p b { color: var(--txt); }
.help-card p code {
  background: var(--bg-0);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
}

.help-note {
  font-size: 12px;
  color: var(--txt-mute);
  margin: 0 0 8px;
  font-style: italic;
}
.help-note code, .help-note b { font-style: normal; }

.help-gate {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  margin-bottom: 6px;
}
.help-gate:hover { border-color: var(--line); background: rgba(20, 24, 52, .8); }
.help-gate > div:nth-child(2) { flex: 1; min-width: 0; }
.help-gate h4 {
  margin: 0 0 4px;
  font-size: 13px;
  color: var(--txt);
  font-weight: 600;
}
.help-gate p {
  margin: 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--txt-dim);
}
.help-gate p b { color: var(--txt); }
.help-gate p code {
  background: var(--bg-0);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
}

.help-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  color: #fff;
  background: var(--gate-bg-2);
  border: 1px solid var(--line);
}
.help-icon.h { background: linear-gradient(135deg, var(--gate-h), #2a4d7a); color: #0b1422; }
.help-icon.x { background: linear-gradient(135deg, var(--gate-x), #5a1f4a); }
.help-icon.y { background: linear-gradient(135deg, var(--gate-y), #5a3f1f); }
.help-icon.z { background: linear-gradient(135deg, var(--gate-z), #3a1f5a); }
.help-icon.rotation { background: linear-gradient(135deg, var(--gate-rot), #1f3a5a); }
.help-icon.two { background: linear-gradient(135deg, var(--gate-cx), #1f5a3f); color: #0a1a14; }
.help-icon.three { background: linear-gradient(135deg, #fb7185, #5a1f2f); }
.help-icon.meas { background: linear-gradient(135deg, var(--gate-meas), #5a4a1f); color: #1a1305; }
.help-icon.barrier { background: var(--bg-3); color: var(--txt-mute); border: 1px dashed var(--line); }

.help-tips {
  margin: 0;
  padding-left: 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--txt-dim);
}
.help-tips li { margin-bottom: 4px; }
.help-tips li b { color: var(--txt); }
.help-tips li code, .help-tips li i {
  background: var(--bg-0);
  padding: 1px 5px;
  border-radius: 3px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  font-style: normal;
}

/* modal */
#modal-root { position: fixed; inset: 0; pointer-events: none; z-index: 100; }
.modal-overlay {
  position: absolute; inset: 0; background: rgba(0,0,0,.6); backdrop-filter: blur(4px);
  display: flex; align-items: center; justify-content: center;
  pointer-events: all;
}
.modal {
  background: var(--bg-2); border: 1px solid var(--line);
  border-radius: 12px; padding: 20px; min-width: 340px; max-width: 600px;
  box-shadow: 0 12px 40px rgba(0,0,0,.6);
}
.modal h2 { margin: 0 0 12px; font-size: 16px; color: var(--accent); }
.modal label { font-size: 12px; color: var(--txt-dim); display: block; margin-bottom: 4px; }
.modal input {
  width: 100%; background: var(--bg-1); border: 1px solid var(--line);
  color: var(--txt); padding: 8px 10px; border-radius: 6px; font-size: 13px;
  margin-bottom: 8px;
  font-family: 'JetBrains Mono', monospace;
}
.modal input:focus { outline: none; border-color: var(--accent); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.modal pre {
  background: var(--bg-1); border: 1px solid var(--line); border-radius: 6px;
  padding: 10px; max-height: 360px; overflow: auto;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px;
  color: var(--txt);
  white-space: pre-wrap; word-break: break-all;
}

/* toast */
#toast-root { position: fixed; bottom: 20px; right: 20px; z-index: 200; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--bg-2); border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  padding: 10px 14px; border-radius: 6px; font-size: 13px;
  box-shadow: 0 6px 20px rgba(0,0,0,.5);
  max-width: 360px;
  animation: toast-in .25s ease-out;
}
.toast.err { border-left-color: var(--err); }
.toast.ok { border-left-color: var(--ok); }
@keyframes toast-in {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: translateX(0); opacity: 1; }
}

/* loader */
.loader-dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); margin: 0 1px;
  animation: blink 1.2s infinite ease-in-out;
}
.loader-dot:nth-child(2) { animation-delay: .15s; }
.loader-dot:nth-child(3) { animation-delay: .3s; }
@keyframes blink { 0%,100% { opacity: .3; } 50% { opacity: 1; } }

/* scrollbars */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* responsive */
@media (max-width: 1100px) {
  .app { grid-template-columns: 200px 1fr 320px; }
}
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; grid-auto-rows: auto; height: auto; overflow: auto; }
  body { overflow: auto; }
}

/* ============================================================
   FLP Simulari — suprascrieri si componente proprii
   ============================================================ */
body.flp { overflow: auto; }

/* nav tab-uri principale */
.nav-tabs {
  display: flex; flex-wrap: wrap; gap: 2px;
  background: linear-gradient(180deg, rgba(15,18,40,.95), rgba(10,12,28,.9));
  border-bottom: 1px solid var(--line);
  padding: 0 14px;
  position: sticky; top: 0; z-index: 20;
}
.nav-tab {
  background: none; border: none; color: var(--txt-dim);
  padding: 11px 14px; font-size: 13.5px; cursor: pointer;
  border-bottom: 3px solid transparent; font-family: inherit;
}
.nav-tab:hover { color: var(--txt); }
.nav-tab.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

.content { max-width: 1280px; margin: 0 auto; padding: 18px 22px 80px; }
.page { display: none; }
.page.active { display: block; }

.card {
  background: linear-gradient(180deg, var(--bg-2), var(--bg-1));
  border: 1px solid var(--line-soft); border-radius: 14px;
  padding: 18px 22px; margin-bottom: 18px;
  box-shadow: 0 2px 14px rgba(0,0,0,.25);
}
.card h2 { margin: 0 0 10px; font-size: 18px; color: var(--accent); }
.card h3 { margin: 0 0 10px; font-size: 15px; color: var(--accent-2); }
.card p { color: var(--txt); }
.muted { color: var(--txt-dim); font-size: 13px; }
.ok { color: var(--ok); }
.err { color: var(--err); }

.exp-table { border-collapse: collapse; width: 100%; font-size: 13px; }
.exp-table th, .exp-table td { border: 1px solid var(--line-soft); padding: 6px 10px; text-align: left; }
.exp-table th { background: var(--bg-3); color: var(--txt-dim); }

.eq-block {
  background: var(--bg-1); border: 1px solid var(--line-soft);
  border-left: 3px solid var(--accent-2);
  border-radius: 8px; padding: 8px 14px; margin: 10px 0;
  overflow-x: auto; font-size: 15px;
}

.dl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 10px; }
.dl-row .btn { text-decoration: none; display: inline-block; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }

/* grila simulare: controale stanga, grafice dreapta */
.sim-grid { display: grid; grid-template-columns: 280px 1fr; gap: 22px; }
@media (max-width: 900px) { .sim-grid { grid-template-columns: 1fr; } }
.controls label { display: block; font-size: 12.5px; color: var(--txt-dim); margin: 12px 0 4px; }
.controls label.radio { color: var(--txt); font-size: 13px; margin: 4px 0; cursor: pointer; }
.controls input[type=range] { width: 100%; accent-color: var(--accent); }
.controls input[type=text] {
  width: 100%; background: var(--bg-1); border: 1px solid var(--line);
  color: var(--txt); border-radius: 8px; padding: 8px 10px; font-size: 14px;
  font-family: Consolas, monospace; letter-spacing: 2px;
}
.btn.block { display: block; width: 100%; margin: 8px 0; }
.note {
  margin-top: 14px; padding: 10px 12px; font-size: 12.5px; color: var(--txt-dim);
  background: var(--bg-1); border: 1px solid var(--line-soft); border-radius: 8px;
}
.stat { margin-top: 10px; font-size: 13px; color: var(--txt); font-family: Consolas, monospace; }
.txrx { display: flex; gap: 16px; margin-top: 10px; font-family: Consolas, monospace; font-size: 15px; }

.plots { min-width: 0; }
canvas.plot { width: 100%; height: 150px; border: 1px solid var(--line-soft); border-radius: 8px; display: block; margin-bottom: 8px; }
canvas.plot-wide { height: 160px; }
canvas.plot.tall { height: 220px; }
.plot-grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.plot-grid2 canvas.plot { margin-bottom: 0; }
canvas.plot-sm { width: 100%; height: 110px; border: 1px solid var(--line-soft); border-radius: 6px; display: block; }
.bit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin-top: 8px; }
.bit-cell .bit-label { font-size: 11.5px; color: var(--txt-dim); text-align: center; margin-top: 3px; font-family: Consolas, monospace; }
canvas.game { width: 100%; max-width: 640px; border: 2px solid var(--line); border-radius: 10px; display: block; }

.switch-state { display: inline-block; padding: 2px 12px; border-radius: 14px; background: var(--bg-3); font-family: Consolas, monospace; font-size: 12.5px; }
.switch-state.comb { background: rgba(52,211,153,.2); color: var(--ok); }
.switch-state.ww { background: rgba(251,113,133,.2); color: var(--err); }

/* composer in card */
.cmp-root { border: 1px solid var(--line-soft); border-radius: 10px; background: var(--bg-1); padding: 10px; }
.cmp-toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.cmp-toolbar .hint { font-size: 12px; color: var(--txt-mute); }
.cmp-palette { display: flex; flex-wrap: wrap; gap: 10px 18px; padding: 8px 4px; border-bottom: 1px solid var(--line-soft); margin-bottom: 8px; }
.cmp-pal-group { display: flex; align-items: center; gap: 5px; flex-wrap: wrap; }
.cmp-pal-title { font-size: 10.5px; color: var(--txt-mute); text-transform: uppercase; letter-spacing: .5px; margin-right: 2px; }
.cmp-root .circuit-wrap { max-height: 320px; }

.circ-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.circ-rez { margin-top: 12px; background: var(--bg-1); border: 1px solid var(--line-soft); border-radius: 10px; padding: 12px 14px; }
.res-meta { font-size: 13px; color: var(--txt-dim); margin-bottom: 8px; }
.res-meta.err { color: var(--err); }
.spin {
  display: inline-block; width: 13px; height: 13px; border: 2px solid var(--line);
  border-top-color: var(--accent); border-radius: 50%;
  animation: sp .7s linear infinite; vertical-align: middle; margin-right: 6px;
}
@keyframes sp { to { transform: rotate(360deg); } }

/* IBM tab */
.page[data-page="ibm"] input[type=password], .page[data-page="ibm"] select {
  width: 100%; background: var(--bg-1); border: 1px solid var(--line);
  color: var(--txt); border-radius: 8px; padding: 8px 10px; font-size: 13.5px; margin-bottom: 6px;
}
.page[data-page="ibm"] label { display: block; font-size: 12.5px; color: var(--txt-dim); margin: 10px 0 4px; }
.ibm-server-banner { background: rgba(52,211,153,.12); border: 1px solid rgba(52,211,153,.4); border-radius: 8px; padding: 8px 12px; font-size: 13px; margin-bottom: 10px; display: flex; justify-content: space-between; align-items: center; gap: 8px; }

/* chat plutitor */
#chat-fab {
  position: fixed; right: 22px; bottom: 22px; z-index: 50;
  width: 56px; height: 56px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border: none; font-size: 24px; cursor: pointer;
  box-shadow: 0 4px 24px rgba(110,231,255,.4);
}
#chat-fab.hidden { display: none; }
#chat-panel {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  width: min(440px, calc(100vw - 30px)); height: min(600px, calc(100vh - 60px));
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 16px;
  display: none; flex-direction: column; overflow: hidden;
  box-shadow: 0 12px 48px rgba(0,0,0,.55);
}
#chat-panel.open { display: flex; }
.chat-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--line);
  background: var(--bg-3); font-weight: 600; font-size: 14px;
}
.chat-head button { background: none; border: none; color: var(--txt-dim); font-size: 16px; cursor: pointer; }
#chat-panel .chat-log { flex: 1; overflow-y: auto; padding: 12px; }
#chat-panel .chat-input { display: flex; gap: 8px; padding: 10px; border-top: 1px solid var(--line); }
#chat-panel .chat-input textarea {
  flex: 1; resize: none; height: 44px; background: var(--bg-1);
  border: 1px solid var(--line); color: var(--txt); border-radius: 10px;
  padding: 10px 12px; font-size: 13.5px; font-family: inherit;
}
#chat-panel .chat-input .btn { padding: 0 16px; }