/* ================================================================
   NT-UI  –  Neural-Things shared UI styles
   ================================================================
   Include via:  <link rel="stylesheet" href="../lib/nt-ui.css">
   Projects may override any variable or class below.
   ================================================================ */

/* ---------- Theme tokens (dark) ---------- */
:root {
  --nt-bg:          #0b0f14;
  --nt-bg-panel:    #0d131b;
  --nt-bg-input:    #0f1b29;
  --nt-bg-inset:    #0b1119;
  --nt-bg-canvas:   #060a0f;
  --nt-border:      #1d2a3a;
  --nt-border-light:rgba(255,255,255,0.12);
  --nt-text:        #e8eef6;
  --nt-text-dim:    #9fb6d3;
  --nt-text-muted:  #7a8fa6;
  --nt-text-heading:#d9e7ff;
  --nt-text-ctrl:   #cfe1ff;
  --nt-accent:      #1d3557;
  --nt-accent-hover:#2a4a6f;
  --nt-accent-active:#3d5a80;
  --nt-green:       #27ae60;
  --nt-green-hover: #2ecc71;
  --nt-orange:      #e67e22;
  --nt-orange-hover:#f39c12;
  --nt-red:         #c0392b;
  --nt-link:        #8ab4ff;
  --nt-radius:      10px;
  --nt-radius-lg:   14px;
  --nt-shadow-card: 0 10px 24px rgba(0,0,0,0.25);
  --nt-font:        system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

  font-family: var(--nt-font);
  color-scheme: dark;
}

/* ---------- Base reset ---------- */
body.nt-dark {
  margin: 0;
  background: var(--nt-bg);
  color: var(--nt-text);
}

/* ---------- Buttons (base) ---------- */
button.nt-btn,
.nt-btn {
  background: var(--nt-accent);
  color: #fff;
  border: 0;
  padding: 9px 11px;
  border-radius: var(--nt-radius);
  cursor: pointer;
  font-weight: 650;
  font-size: inherit;
  line-height: 1.2;
}
.nt-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.nt-btn:hover:not(:disabled) {
  background: var(--nt-accent-hover);
}
.nt-btn.active {
  background: var(--nt-accent-active);
}

/* ---------- Toggle (Start / Stop) button ---------- */
.nt-toggle-btn {
  background: var(--nt-green);
  color: #fff;
  border: 0;
  padding: 9px 11px;
  border-radius: var(--nt-radius);
  cursor: pointer;
  font-weight: 650;
  box-shadow: 0 2px 8px rgba(39, 174, 96, 0.3);
}
.nt-toggle-btn:hover:not(:disabled) {
  background: var(--nt-green-hover);
}
.nt-toggle-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.nt-toggle-btn.running {
  background: var(--nt-orange);
  box-shadow: 0 2px 8px rgba(230, 126, 34, 0.3);
}
.nt-toggle-btn.running:hover:not(:disabled) {
  background: var(--nt-orange-hover);
}

/* ---------- Collapse button (pill) ---------- */
.nt-collapse-btn {
  background: var(--nt-bg-input);
  border: 1px solid var(--nt-border);
  color: var(--nt-text-ctrl);
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 650;
  cursor: pointer;
}
.nt-collapse-btn:hover {
  background: var(--nt-accent);
}
.nt-collapse-btn.active {
  background: var(--nt-accent);
  border-color: var(--nt-accent-active);
}

/* ---------- Collapsible panel ---------- */
.nt-panel {
  margin-top: 10px;
  border: 1px solid var(--nt-border);
  border-radius: var(--nt-radius-lg);
  padding: 12px;
  background: var(--nt-bg-inset);
  display: none;
}
.nt-panel.open {
  display: block;
}

/* Variant: collapse by content body */
.nt-panel-body.collapsed {
  display: none;
}

/* ---------- Slider control row ---------- */
.ctrl {
  display: grid;
  grid-template-columns: 130px 1fr 70px;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
}
.ctrl.with-adj {
  grid-template-columns: 130px auto 1fr auto 70px;
  gap: 6px;
}
.ctrl:first-child {
  margin-top: 0;
}
.ctrl label {
  font-size: 12px;
  color: var(--nt-text-ctrl);
}
.ctrl input[type="range"] {
  width: 100%;
}
.ctrl .small,
.small {
  font-size: 11px;
  color: var(--nt-text-dim);
}

/* ---------- Adjustment +/- buttons ---------- */
.adj-btn {
  width: 26px;
  height: 26px;
  padding: 0;
  background: var(--nt-bg-input);
  border: 1px solid var(--nt-border);
  border-radius: 6px;
  color: var(--nt-text-ctrl);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  touch-action: manipulation;
  user-select: none;
}
.adj-btn:hover {
  background: var(--nt-accent);
  border-color: var(--nt-accent-active);
}
.adj-btn:active {
  background: var(--nt-green);
}

/* ---------- Recording pulse ---------- */
.nt-rec-btn.recording {
  background: var(--nt-red);
  animation: nt-pulse-rec 1s infinite;
}
@keyframes nt-pulse-rec {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ---------- Common form elements ---------- */
.nt-select,
select {
  background: var(--nt-bg-input);
  color: var(--nt-text);
  border: 1px solid var(--nt-border);
  border-radius: var(--nt-radius);
  padding: 8px 10px;
}

/* ---------- Card / panel ---------- */
.nt-card {
  background: var(--nt-bg-panel);
  border: 1px solid var(--nt-border);
  border-radius: var(--nt-radius-lg);
  padding: 14px;
  box-shadow: var(--nt-shadow-card);
}

/* ---------- Canvas wrapper ---------- */
.nt-canvas-wrap {
  position: relative;
  border: 1px solid var(--nt-border);
  border-radius: 12px;
  background: var(--nt-bg-canvas);
  padding: 8px;
}

/* ---------- Separator ---------- */
.nt-sep,
.sep {
  height: 1px;
  background: var(--nt-border);
  margin: 10px 0;
}

/* ---------- Layout helpers ---------- */
.nt-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}
.nt-btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

/* ---------- Topbar ---------- */
.nt-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--nt-bg-panel);
  border-bottom: 1px solid var(--nt-border);
  padding: 12px 14px;
}
.nt-topbar h1,
.nt-topbar h2 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 750;
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.nt-footer {
  margin-top: 40px;
  padding: 20px 14px;
  border-top: 1px solid var(--nt-border);
  text-align: center;
  font-size: 12px;
  color: var(--nt-text-muted);
}
.nt-footer a {
  color: var(--nt-link);
  text-decoration: none;
}
.nt-footer a:hover {
  text-decoration: underline;
}

/* ---------- Status text ---------- */
.nt-status {
  font-size: 12px;
  font-weight: 400;
  color: var(--nt-text-muted);
}

/* ---------- Mobile ---------- */
@media (max-width: 600px) {
  .ctrl {
    grid-template-columns: 90px 1fr 45px;
  }
  .ctrl.with-adj {
    grid-template-columns: 90px auto 1fr auto 45px;
  }
}