/* Shared design system loaded via shared.css */

:root {
          --bg-color: #0b0f19;
          --panel-bg: #151b2b;
          --border: #2a344a;
          --text-main: #e2e8f0;
          --text-muted: #94a3b8;
          --primary: #38bdf8;
          --nmos-color: #4ade80;
          --pmos-color: #f87171;
          --vin-color: #c084fc;
          --bg-math: #0f1423;
}

* {
          margin: 0;
          padding: 0;
          box-sizing: border-box;
}

body {
          font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
          background-color: var(--bg-color);
          color: var(--text-main);
          line-height: 1.6;
}

.ambient-glow {
          position: fixed;
          top: -10%;
          left: 50%;
          transform: translateX(-50%);
          width: 60vw;
          height: 40vh;
          background: radial-gradient(circle, rgba(56, 189, 248, 0.1) 0%, transparent 60%);
          pointer-events: none;
          z-index: -1;
}

.container {
          max-width: 1200px;
          margin: 0 auto;
          padding: 20px;
}

header {
          padding: 30px 0 20px;
          text-align: center;
}

.text-gradient {
          background: linear-gradient(90deg, var(--primary), var(--vin-color));
          -webkit-background-clip: text;
          -webkit-text-fill-color: transparent;
          font-size: 2.4rem;
          font-weight: 800;
}

.subtitle {
          color: var(--text-muted);
          font-size: 1.1rem;
          margin-top: 5px;
}

.panel {
          background: var(--panel-bg);
          border: 1px solid var(--border);
          border-radius: 12px;
          padding: 25px;
          margin-bottom: 20px;
          box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.control-grid {
          display: grid;
          grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
          gap: 20px;
}

.control-group {
          display: flex;
          flex-direction: column;
          gap: 8px;
}

/* FIX: Label row layout */
.label-row {
          display: flex;
          justify-content: space-between;
          align-items: baseline;
}

.label-row label {
          font-size: 0.9rem;
          font-weight: 600;
          color: var(--text-muted);
}

.val-display {
          color: var(--primary);
          font-family: monospace;
          font-size: 1.05rem;
          font-weight: bold;
}

input[type="range"] {
          width: 100%;
          accent-color: var(--primary);
          cursor: pointer;
}

select {
          width: 100%;
          background: #0b0f19;
          color: white;
          border: 1px solid var(--border);
          padding: 10px;
          border-radius: 6px;
          outline: none;
          font-weight: bold;
}

.highlight-control {
          background: rgba(192, 132, 252, 0.1);
          padding: 15px;
          border-radius: 8px;
          border-left: 4px solid var(--vin-color);
}

.info-panel {
          display: flex;
          justify-content: space-between;
          gap: 20px;
          text-align: center;
}

.state-box {
          flex: 1;
          padding: 15px;
          border-radius: 8px;
          background: var(--bg-math);
          border: 1px solid var(--border);
}

.nmos-state {
          border-bottom: 3px solid var(--nmos-color);
}

.pmos-state {
          border-bottom: 3px solid var(--pmos-color);
}

.vtc-region {
          border-bottom: 3px solid var(--primary);
          background: rgba(56, 189, 248, 0.05);
}

.state-box h4 {
          color: var(--text-muted);
          font-size: 0.85rem;
          text-transform: uppercase;
          margin-bottom: 8px;
          letter-spacing: 0.5px;
}

.region-val {
          font-size: 1.4rem;
          font-weight: bold;
          font-family: monospace;
}

.highlight-text {
          color: var(--primary);
}

.code-text {
          font-family: monospace;
          color: var(--primary);
          font-weight: bold;
}

.charts-grid {
          display: grid;
          grid-template-columns: 1fr 1fr;
          gap: 20px;
}

@media (max-width: 900px) {
          .charts-grid {
                    grid-template-columns: 1fr;
          }

          .info-panel {
                    flex-direction: column;
          }
}

.chart-card h3 {
          font-size: 1.1rem;
          margin-bottom: 15px;
          border-bottom: 1px solid var(--border);
          padding-bottom: 10px;
}

.chart-wrap {
          height: 350px;
          width: 100%;
          position: relative;
}

/* Explanation Panel */
.explanation-panel {
          border-left: 4px solid var(--primary);
}

.explanation-panel h3 {
          font-size: 1.2rem;
          margin-bottom: 15px;
          display: flex;
          align-items: center;
          gap: 10px;
}

.explanation-panel p {
          color: var(--text-muted);
          margin-bottom: 15px;
          font-size: 0.95rem;
          line-height: 1.7;
}

.math-bounds {
          display: flex;
          gap: 15px;
          margin-top: 20px;
}

@media (max-width: 768px) {
          .math-bounds {
                    flex-direction: column;
          }
}

.bound-box {
          flex: 1;
          background: var(--bg-math);
          padding: 15px;
          border-radius: 8px;
          border: 1px solid var(--border);
          text-align: center;
}

.bound-title {
          font-size: 0.8rem;
          color: var(--text-muted);
          text-transform: uppercase;
          margin-bottom: 8px;
}

.bound-eq {
          font-family: monospace;
          font-size: 1rem;
          color: var(--text-main);
          margin-bottom: 10px;
}

.bound-val {
          font-size: 1.6rem;
          font-weight: bold;
          font-family: monospace;
          color: var(--pmos-color);
}

.highlight-val {
          color: var(--primary);
}

#exp-vmin {
          color: var(--nmos-color);
}




/* Ensure the body allows absolute positioning */



/* ================================================================
   DESIGN SYSTEM OVERRIDE — Applied via shared.css variables
   These overrides unify all pages to the shared dark-lab aesthetic
   ================================================================ */

/* Reset old colors to use CSS variables from shared.css */
body {
  font-family: var(--font-sans) !important;
  background-color: var(--bg) !important;
  color: var(--text-primary) !important;
  padding-top: 72px !important;
}

h1, h2, h3 {
  font-family: var(--font-mono) !important;
}

h1 { color: var(--text-primary) !important; }
h2 { color: var(--cyan) !important; }

/* Panel backgrounds */
.controls-panel, .panel, .dashboard > *, .grid-container > *,
.info-panel, .visualizer-panel, aside, section.panel {
  background: var(--panel) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-panel) !important;
  color: var(--text-primary) !important;
}

.panel-header, header.panel-header {
  background: var(--panel-2) !important;
  border-bottom: 1px solid var(--border) !important;
  padding: 12px 16px !important;
}

/* Inputs */
input[type="text"], input[type="number"], select, textarea {
  background: var(--bg-2) !important;
  border: 1px solid var(--border-2) !important;
  color: var(--text-primary) !important;
  font-family: var(--font-mono) !important;
  border-radius: var(--radius-sm) !important;
}

label {
  color: var(--text-secondary) !important;
  font-family: var(--font-mono) !important;
  font-size: 0.78rem !important;
  letter-spacing: 0.05em !important;
  text-transform: uppercase !important;
}

/* Buttons */
button {
  font-family: var(--font-mono) !important;
  border-radius: var(--radius-sm) !important;
}

/* Canvas containers */
.canvas-container, .canvas-wrapper {
  background: var(--bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  overflow: hidden;
}

/* Metrics / data boxes */
.metrics-box, .data-box, .explanation-panel,
.instruction-box, .dynamic-explanation {
  background: var(--bg) !important;
  border: 1px solid var(--border) !important;
  border-radius: var(--radius-md) !important;
  color: var(--text-secondary) !important;
  font-size: 0.85rem !important;
}

/* Highlights */
.highlight, .highlight-k { color: var(--amber) !important; }
span[style*="color: #89b4fa"], .text-blue { color: var(--cyan) !important; }

/* Subtitles */
.subtitle, .page-subtitle, p.subtitle {
  color: var(--text-secondary) !important;
  font-family: var(--font-mono) !important;
  font-size: 0.82rem !important;
}

/* Fix dashboard flex → still works but adds top padding spacing */
.dashboard {
  padding-top: 8px;
}

/* ── SCROLL & HOME-BTN FIX ── */
body {
  padding-top: 80px !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
}
.container {
  padding-top: 8px !important;
}
.control-grid {
  display: grid !important;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) !important;
  gap: 16px !important;
}
@media (max-width: 600px) {
  .control-grid { grid-template-columns: 1fr !important; }
}