:root {
  --bg-page: #080d1a;
  --bg-card: #111a2e;
  --bg-panel: #0a1120;
  --border-color: #1e2c47;
  --border-focus: #38bdf8;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --color-green: #22c55e;
  --color-amber: #f59e0b;
  --color-cyan: #38bdf8;
  --color-red: #ef4444;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

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

body {
  background-color: var(--bg-page);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 16px;
  -webkit-font-smoothing: antialiased;
}

.app-container {
  width: 100%;
  max-width: 1180px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.header-section {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.badge-tag {
  background: rgba(56, 189, 248, 0.1);
  color: var(--color-cyan);
  border: 1px solid rgba(56, 189, 248, 0.35);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  padding: 4px 12px;
  border-radius: 9999px;
  text-transform: uppercase;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
}

.header-section h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-main);
}

.header-section .subtitle {
  color: var(--text-muted);
  font-size: 0.98rem;
}

.calculator-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 24px;
}

@media (max-width: 980px) {
  .calculator-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.view-mode-tabs {
  display: flex;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 3px;
  gap: 4px;
}

.view-tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  color: var(--text-dim);
  border: none;
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.view-tab-btn svg {
  opacity: 0.7;
}

.view-tab-btn:hover {
  color: var(--text-main);
}

.view-tab-btn.active {
  background: rgba(56, 189, 248, 0.16);
  color: var(--color-cyan);
}

.view-tab-btn.active svg {
  opacity: 1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
}

.presets-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.presets-label {
  font-size: 0.82rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
}

.presets-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preset-btn {
  background: var(--bg-panel);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.preset-btn:hover {
  background: #15223c;
  color: var(--color-cyan);
  border-color: rgba(56, 189, 248, 0.4);
}

.preset-btn.active {
  background: rgba(56, 189, 248, 0.15);
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
}

.dimensions-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-field label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
}

.input-field input,
.select-car {
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 0.95rem;
  outline: none;
  width: 100%;
  transition: all 0.15s ease;
}

.input-field input:focus,
.select-car:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.25);
}

.checkbox-control {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-main);
  margin-top: 4px;
}

.checkbox-control input[type="checkbox"] {
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--bg-panel);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  cursor: pointer;
  display: grid;
  place-content: center;
  transition: all 0.15s ease;
}

.checkbox-control input[type="checkbox"]:checked {
  background: var(--color-cyan);
  border-color: var(--color-cyan);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.checkbox-control input[type="checkbox"]:checked::before {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid #000;
  border-bottom: 2px solid #000;
  transform: rotate(-45deg) translate(1px, -1px);
}

.results-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.result-banner {
  width: 100%;
  padding: 16px 20px;
  border-radius: 10px;
  font-size: 1.45rem;
  font-weight: 800;
  text-align: center;
  letter-spacing: -0.01em;
  transition: all 0.2s ease;
}

.result-banner.fits-comfortable {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.4);
  box-shadow: 0 0 20px rgba(34, 197, 94, 0.15);
}

.result-banner.fits-tight {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.15);
}

.result-banner.fits-angled {
  background: rgba(56, 189, 248, 0.14);
  color: var(--color-cyan);
  border: 1px solid rgba(56, 189, 248, 0.5);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
}

.result-banner.will-not-fit {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.15);
}

.result-explanation {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.view-container {
  display: none;
  width: 100%;
}

.view-container.active {
  display: block;
}

/* 3D Interactive Viewport */
.viewport-3d-wrap {
  position: relative;
  width: 100%;
  height: 480px;
  background: #060a14;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  overflow: hidden;
}

#three-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

#three-canvas:active {
  cursor: grabbing;
}

.camera-toolbar {
  position: absolute;
  top: 14px;
  left: 14px;
  display: flex;
  background: rgba(10, 17, 32, 0.88);
  border: 1px solid rgba(56, 189, 248, 0.3);
  backdrop-filter: blur(10px);
  border-radius: 8px;
  padding: 4px;
  gap: 4px;
  z-index: 10;
}

.cam-btn {
  background: transparent;
  color: var(--text-dim);
  border: none;
  border-radius: 6px;
  padding: 6px 11px;
  font-size: 0.76rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.15s ease;
}

.cam-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}

.cam-btn.active {
  background: rgba(56, 189, 248, 0.22);
  color: var(--color-cyan);
}

.cam-btn.x-ray-btn {
  color: #38bdf8;
  border-left: 1px solid rgba(56, 189, 248, 0.25);
  margin-left: 4px;
  padding-left: 10px;
}

.viewport-hud-bottom {
  position: absolute;
  bottom: 12px;
  left: 14px;
  right: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
}

.hud-hint {
  font-size: 0.74rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.body-type-pill {
  background: rgba(56, 189, 248, 0.12);
  color: var(--color-cyan);
  border: 1px solid rgba(56, 189, 248, 0.4);
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 4px;
}

/* 2D Blueprints */
.visualizers-grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 16px;
}

@media (max-width: 820px) {
  .visualizers-grid {
    grid-template-columns: 1fr;
  }
}

.visualizer-card {
  background: #070c18;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.visualizer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(30, 44, 71, 0.6);
  padding-bottom: 10px;
}

.visualizer-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.view-axis-indicator {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--color-cyan);
  opacity: 0.8;
}

.visualizer-header h3 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-main);
  text-transform: uppercase;
}

.badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 9px;
  border-radius: 4px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.badge-clears {
  background: rgba(34, 197, 94, 0.2);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.5);
}

.badge-colliding {
  background: rgba(239, 68, 68, 0.25);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.5);
}

.badge-angled {
  background: rgba(56, 189, 248, 0.2);
  color: var(--color-cyan);
  border: 1px solid rgba(56, 189, 248, 0.5);
}

.blueprint-canvas-wrap {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid rgba(34, 48, 74, 0.6);
  background: #060a14;
}

.blueprint-svg {
  width: 100%;
  height: 220px;
  display: block;
}

.specs-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--color-cyan);
  border-radius: 10px;
  padding: 18px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.specs-title {
  color: var(--color-cyan);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.specs-list strong {
  color: var(--text-main);
  font-weight: 600;
}