/* ==========================================
   TowSafe — The Payload Reality Check
   style.css
   ========================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  --bg-body: #1a1d23;
  --bg-panel: #252830;
  --bg-panel-alt: #2a2d36;
  --bg-input: #1e2128;
  --border-subtle: #3a3d47;
  --border-focus: #3498db;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a8;
  --text-muted: #6b7280;
  --color-safe: #2ecc71;
  --color-tight: #f39c12;
  --color-risky: #e67e22;
  --color-danger: #e74c3c;
  --color-accent: #3498db;
  --color-purple: #9b59b6;
  --color-teal: #1abc9c;
  --color-curb: #4a4e5a;
  --font-ui: 'Barlow', 'Segoe UI', system-ui, sans-serif;
  --font-condensed: 'Barlow Condensed', 'Barlow', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 2px 12px rgba(0,0,0,0.35);
  --shadow-glow-safe: 0 0 20px rgba(46,204,113,0.25);
  --shadow-glow-danger: 0 0 20px rgba(231,76,60,0.35);
  --transition: 0.25s ease;
}

/* ---------- Reset & Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-body);
  min-height: 100vh;
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Header ---------- */
.site-header {
  background: linear-gradient(135deg, #1e2128 0%, #252830 100%);
  border-bottom: 2px solid var(--color-accent);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

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

.logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.logo-icon svg {
  width: 100%;
  height: 100%;
}

.logo-text h1 {
  font-family: var(--font-condensed);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.tagline {
  font-size: 0.72rem;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Unit toggle */
.btn-unit {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
  padding: 6px 12px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}

.btn-unit:hover {
  border-color: var(--color-accent);
}

.unit-switch {
  width: 32px;
  height: 18px;
  background: var(--border-subtle);
  border-radius: 9px;
  position: relative;
  transition: var(--transition);
}

.unit-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  background: var(--color-accent);
  border-radius: 50%;
  transition: var(--transition);
}

.btn-unit.active .unit-switch::after {
  transform: translateX(14px);
}

.btn-unit .unit-label.active {
  color: var(--color-accent);
}

/* ---------- Ad Placeholders ---------- */
.ad-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  margin: 16px auto;
  background: rgba(37, 40, 48, 0.4);
  border-radius: var(--radius-sm);
}

.ad-mobile {
  width: 320px;
  height: 50px;
  max-width: 100%;
}

.ad-desktop {
  display: none;
  width: 728px;
  height: 90px;
  max-width: 100%;
}

@media (min-width: 768px) {
  .ad-mobile { display: none; }
  .ad-desktop { display: flex; }
}

/* ---------- Main ---------- */
.main-content {
  padding-top: 20px;
  padding-bottom: 40px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- Panels ---------- */
.panel {
  background: var(--bg-panel);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  animation: panelSlideIn 0.4s ease both;
}

@keyframes panelSlideIn {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.panel:nth-child(2) { animation-delay: 0.05s; }
.panel:nth-child(3) { animation-delay: 0.1s; }
.panel:nth-child(4) { animation-delay: 0.15s; }
.panel:nth-child(5) { animation-delay: 0.2s; }
.panel:nth-child(6) { animation-delay: 0.25s; }
.panel:nth-child(7) { animation-delay: 0.3s; }

.panel-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  background: var(--bg-panel-alt);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}

.panel-icon {
  width: 28px;
  height: 28px;
  color: var(--color-accent);
  flex-shrink: 0;
}

.panel-icon svg {
  width: 100%;
  height: 100%;
}

.panel-header h2 {
  font-family: var(--font-condensed);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.3px;
  flex: 1;
}

.panel-body {
  padding: 20px;
}

/* ---------- Forms ---------- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.form-group label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

select,
input[type="number"],
input[type="text"] {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  transition: var(--transition);
  width: 100%;
}

input[type="number"] {
  font-family: var(--font-mono);
  font-weight: 600;
}

select:focus,
input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

select:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

/* ---------- Vehicle Selectors ---------- */
.vehicle-selectors {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 600px) {
  .vehicle-selectors {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

/* Custom vehicle */
.custom-vehicle-toggle {
  margin-top: 14px;
  text-align: center;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.custom-vehicle-inputs {
  margin-top: 16px;
  padding: 16px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.custom-vehicle-inputs h3 {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-accent);
}

.custom-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 600px) {
  .custom-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.hidden {
  display: none !important;
}

/* Vehicle Stats */
.vehicle-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
  animation: fadeInUp 0.35s ease;
}

@media (min-width: 600px) {
  .vehicle-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-card {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  transition: var(--transition);
}

.stat-card.highlight {
  border-color: var(--color-safe);
  background: rgba(46, 204, 113, 0.07);
}

.stat-card.accent {
  border-color: var(--color-accent);
  background: rgba(52, 152, 219, 0.07);
}

.stat-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-unit {
  display: block;
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

/* ---------- Remaining Payload Badge ---------- */
.remaining-payload-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-input);
  border: 1px solid var(--color-safe);
  border-radius: 20px;
  padding: 6px 14px;
  margin-left: auto;
  transition: var(--transition);
}

.badge-label {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.badge-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-safe);
  transition: color var(--transition);
}

.badge-unit {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
}

.remaining-payload-badge.tight {
  border-color: var(--color-tight);
}
.remaining-payload-badge.tight .badge-value {
  color: var(--color-tight);
}

.remaining-payload-badge.risky {
  border-color: var(--color-risky);
}
.remaining-payload-badge.risky .badge-value {
  color: var(--color-risky);
}

.remaining-payload-badge.danger {
  border-color: var(--color-danger);
  animation: pulseBadge 1s ease infinite;
}
.remaining-payload-badge.danger .badge-value {
  color: var(--color-danger);
}

@keyframes pulseBadge {
  0%, 100% { box-shadow: 0 0 0 0 rgba(231,76,60,0.4); }
  50% { box-shadow: 0 0 10px 3px rgba(231,76,60,0.3); }
}

/* ---------- Deduction Groups ---------- */
.deduction-group {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.deduction-group:last-child {
  border-bottom: none;
}

.deduction-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.deduction-title svg {
  color: var(--color-accent);
  flex-shrink: 0;
}

.passenger-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

@media (min-width: 600px) {
  .passenger-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.deduction-subtotal {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding: 8px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.deduction-subtotal strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent);
}

/* Accessories */
.accessory-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-bottom: 12px;
}

@media (min-width: 480px) {
  .accessory-list {
    grid-template-columns: 1fr 1fr;
  }
}

.accessory-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  user-select: none;
}

.accessory-item:hover {
  border-color: var(--border-subtle);
}

.accessory-item.checked {
  border-color: var(--color-accent);
  background: rgba(52, 152, 219, 0.08);
}

.accessory-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
  cursor: pointer;
}

.accessory-name {
  flex: 1;
  font-size: 0.82rem;
  color: var(--text-primary);
  font-weight: 500;
}

.accessory-weight {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

/* Custom accessory */
.custom-accessory {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 10px 0;
  flex-wrap: wrap;
}

.custom-accessory .form-group.inline {
  flex: 1;
  min-width: 120px;
}

.btn-add {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--color-accent);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: #fff;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-add:hover {
  background: #2980b9;
  transform: translateY(-1px);
}

.custom-accessories-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.custom-accessory-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: rgba(52, 152, 219, 0.08);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  animation: fadeInUp 0.2s ease;
}

.custom-accessory-item .cai-name {
  flex: 1;
  color: var(--text-primary);
  font-weight: 500;
}

.custom-accessory-item .cai-weight {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-accent);
  font-weight: 600;
}

.custom-accessory-item .cai-remove {
  background: transparent;
  border: none;
  color: var(--color-danger);
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  padding: 2px;
  transition: var(--transition);
}

.custom-accessory-item .cai-remove:hover {
  transform: scale(1.2);
}

/* ---------- Towing Section ---------- */
.section-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
  font-style: italic;
}

.towing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 600px) {
  .towing-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.tongue-pct-group .range-wrapper {
  display: flex;
  align-items: center;
  gap: 10px;
}

input[type="range"] {
  flex: 1;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border-subtle);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--bg-panel);
  cursor: pointer;
  transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 0 8px rgba(52, 152, 219, 0.4);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50%;
  border: 2px solid var(--bg-panel);
  cursor: pointer;
}

output {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent);
  min-width: 40px;
  text-align: center;
}

.range-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.tongue-result {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 16px;
}

.tongue-stat {
  text-align: center;
  padding: 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.tongue-stat.highlight {
  border-color: var(--color-safe);
  background: rgba(46, 204, 113, 0.06);
}

.tongue-label {
  display: block;
  font-size: 0.68rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 4px;
}

.tongue-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tongue-unit {
  display: block;
  font-size: 0.6rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

/* ---------- Verdict Dashboard ---------- */
.verdict-panel {
  border-color: var(--border-subtle);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.verdict-panel.verdict-safe {
  border-color: var(--color-safe);
  box-shadow: var(--shadow-glow-safe);
}

.verdict-panel.verdict-tight {
  border-color: var(--color-tight);
}

.verdict-panel.verdict-risky {
  border-color: var(--color-risky);
}

.verdict-panel.verdict-danger {
  border-color: var(--color-danger);
  box-shadow: var(--shadow-glow-danger);
  animation: panelPulse 1.5s ease infinite;
}

@keyframes panelPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(231,76,60,0.25); }
  50% { box-shadow: 0 0 35px rgba(231,76,60,0.4); }
}

.verdict-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  border-radius: var(--radius);
  margin-bottom: 20px;
  transition: all 0.4s ease;
}

.verdict-badge.verdict-none {
  background: var(--bg-input);
  border: 1px dashed var(--border-subtle);
}

.verdict-badge.verdict-safe-badge {
  background: rgba(46, 204, 113, 0.1);
  border: 2px solid var(--color-safe);
}

.verdict-badge.verdict-tight-badge {
  background: rgba(243, 156, 18, 0.1);
  border: 2px solid var(--color-tight);
}

.verdict-badge.verdict-risky-badge {
  background: rgba(230, 126, 34, 0.1);
  border: 2px solid var(--color-risky);
}

.verdict-badge.verdict-danger-badge {
  background: repeating-linear-gradient(
    -45deg,
    rgba(231, 76, 60, 0.08),
    rgba(231, 76, 60, 0.08) 10px,
    rgba(241, 196, 15, 0.06) 10px,
    rgba(241, 196, 15, 0.06) 20px
  );
  border: 2px solid var(--color-danger);
  animation: dangerPulse 1s ease infinite;
}

@keyframes dangerPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.005); }
}

.verdict-icon {
  font-size: 2rem;
}

.verdict-text {
  font-family: var(--font-condensed);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Verdict numbers */
.verdict-numbers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 24px;
}

@media (min-width: 600px) {
  .verdict-numbers {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.verdict-num-card {
  text-align: center;
  padding: 16px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  transition: var(--transition);
}

.verdict-num-card.accent {
  border-color: var(--color-accent);
}

.verdict-num-card.gap-card {
  position: relative;
}

.verdict-num-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.verdict-num-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: color var(--transition);
}

.verdict-num-unit {
  display: block;
  font-size: 0.6rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.verdict-gap-pct {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 4px;
  color: var(--color-risky);
}

/* ---------- Gauge ---------- */
.gauge-container {
  margin-top: 8px;
}

.gauge-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.gauge-bar {
  display: flex;
  height: 42px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  position: relative;
}

.gauge-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
  position: relative;
  min-width: 0;
}

#gaugeCurb { background: var(--color-curb); }
#gaugePassengers { background: var(--color-accent); }
#gaugeCargo { background: var(--color-purple); }
#gaugeTongue { background: var(--color-risky); }
#gaugeRemaining { background: var(--color-safe); }
#gaugeRemaining.overloaded {
  background: var(--color-danger);
}

.gauge-seg-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
  white-space: nowrap;
  padding: 0 4px;
}

.gauge-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.legend-swatch {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.gauge-markers {
  margin-top: 4px;
  text-align: right;
}

.gauge-marker-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* ---------- Breakdown Section ---------- */
.breakdown-chart {
  margin-bottom: 16px;
}

.breakdown-bar-container {
  position: relative;
  margin-bottom: 6px;
}

.breakdown-bar-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 4px;
}

.breakdown-bar-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.breakdown-bar-value {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-primary);
}

.breakdown-bar-track {
  height: 22px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.breakdown-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  display: flex;
  align-items: center;
  padding-left: 6px;
}

.breakdown-bar-pct {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.breakdown-table {
  margin-top: 12px;
}

.breakdown-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.breakdown-table th {
  text-align: left;
  padding: 8px 10px;
  background: var(--bg-input);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.68rem;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-subtle);
}

.breakdown-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.breakdown-table td:nth-child(2),
.breakdown-table td:nth-child(3) {
  font-family: var(--font-mono);
  font-weight: 600;
  text-align: right;
}

.breakdown-table tr:last-child td {
  border-bottom: none;
}

.breakdown-table .row-remaining td {
  color: var(--color-safe);
  font-weight: 700;
}

.breakdown-table .row-overloaded td {
  color: var(--color-danger);
  font-weight: 700;
}

/* ---------- Trailer Match Comparison ---------- */
.trailer-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 700px) {
  .trailer-cards {
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.trailer-card {
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: var(--transition);
}

.trailer-card.best-match {
  border-color: var(--color-safe);
  box-shadow: 0 0 12px rgba(46, 204, 113, 0.15);
}

.trailer-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.trailer-card-num {
  font-family: var(--font-condensed);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
}

.trailer-card-verdict {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 3px;
  text-transform: uppercase;
}

.trailer-card-verdict.safe { background: rgba(46,204,113,0.15); color: var(--color-safe); }
.trailer-card-verdict.tight { background: rgba(243,156,18,0.15); color: var(--color-tight); }
.trailer-card-verdict.risky { background: rgba(230,126,34,0.15); color: var(--color-risky); }
.trailer-card-verdict.danger { background: rgba(231,76,60,0.15); color: var(--color-danger); }

.trailer-card .form-group {
  gap: 4px;
}

.trailer-card label {
  font-size: 0.7rem;
}

.trailer-card select,
.trailer-card input {
  padding: 8px 10px;
  font-size: 0.85rem;
}

.trailer-card-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: auto;
}

.trailer-mini-stat {
  text-align: center;
  padding: 8px 4px;
  background: var(--bg-panel);
  border-radius: 4px;
}

.trailer-mini-stat .tms-label {
  display: block;
  font-size: 0.58rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.trailer-mini-stat .tms-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ---------- Safety Tips ---------- */
.tips-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tip-card {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--border-subtle);
  animation: fadeInUp 0.3s ease;
}

.tip-card.warning {
  border-left-color: var(--color-danger);
  background: rgba(231, 76, 60, 0.06);
}

.tip-card.caution {
  border-left-color: var(--color-tight);
  background: rgba(243, 156, 18, 0.06);
}

.tip-card.info {
  border-left-color: var(--color-accent);
  background: rgba(52, 152, 219, 0.06);
}

.tip-card.general {
  border-left-color: var(--text-muted);
}

.tip-card.safe-tip {
  border-left-color: var(--color-safe);
  background: rgba(46, 204, 113, 0.06);
}

.tip-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.tip-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--border-subtle);
  padding: 20px 0;
  margin-top: 20px;
}

.footer-inner {
  text-align: center;
}

.footer-inner p {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-disclaimer {
  margin-top: 6px;
  font-style: italic;
  font-size: 0.7rem !important;
}

/* ---------- Hazard / Caution Stripes ---------- */
.hazard-stripes {
  background: repeating-linear-gradient(
    -45deg,
    rgba(241, 196, 15, 0.12),
    rgba(241, 196, 15, 0.12) 10px,
    rgba(26, 29, 35, 0) 10px,
    rgba(26, 29, 35, 0) 20px
  );
}

/* ---------- Animations ---------- */
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-count {
  animation: countUp 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10% { transform: translateX(-3px); }
  20% { transform: translateX(3px); }
  30% { transform: translateX(-3px); }
  40% { transform: translateX(3px); }
  50% { transform: translateX(-2px); }
  60% { transform: translateX(2px); }
  70% { transform: translateX(-1px); }
  80% { transform: translateX(1px); }
}

.shake {
  animation: shake 0.5s ease;
}

/* ---------- Responsive Refinements ---------- */
@media (min-width: 768px) {
  .container {
    padding: 0 24px;
  }

  .panel-header {
    padding: 18px 24px;
  }

  .panel-body {
    padding: 24px;
  }

  .logo-text h1 {
    font-size: 1.9rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .verdict-text {
    font-size: 1.5rem;
  }

  .verdict-num-value {
    font-size: 1.8rem;
  }

  .gauge-bar {
    height: 50px;
  }

  .gauge-seg-label {
    font-size: 0.68rem;
  }
}

@media (min-width: 960px) {
  .main-content {
    gap: 24px;
  }
}

/* ---------- Scrollbar Styling ---------- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-body);
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Number input spinner hide for cleaner look */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  opacity: 1;
}