:root {
  --bg: #0f172a;
  --card: #131c2f;
  --panel: #16233a;
  --border: #1f2d46;
  --text: #e9edf5;
  --muted: #a8b3c7;
  --accent: #3b82f6;
  --accent-2: #8b5cf6;
  --danger: #f87171;
  --success: #22c55e;
  --radius: 14px;
  --shadow: 0 14px 40px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.12), transparent 26%),
    radial-gradient(circle at 90% 10%, rgba(139, 92, 246, 0.12), transparent 26%),
    linear-gradient(135deg, #0f172a, #15233b);
  color: var(--text);
  min-height: 100vh;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 16px 56px;
}

.hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.hero__text h1 {
  margin: 4px 0 6px;
  font-size: 32px;
  letter-spacing: -0.02em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 720px;
}

.hero__cta {
  display: flex;
  gap: 10px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 20px 22px;
  box-shadow: var(--shadow);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.muted {
  color: var(--muted);
  margin: 4px 0 0;
}

.actions {
  display: flex;
  gap: 10px;
}

.card__header .actions {
  flex-shrink: 0;
}

.actions--inline {
  flex-wrap: wrap;
}

.actions .wide {
  width: 100%;
}

button {
  border: none;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
}

button:active {
  transform: translateY(1px);
}

.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #f8fafc;
  box-shadow: 0 12px 30px rgba(59, 130, 246, 0.28);
}

.primary:hover {
  box-shadow: 0 16px 40px rgba(59, 130, 246, 0.35);
}

.ghost {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  border: 1px solid var(--border);
}

#legs-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 4px;
}

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

.leg {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.leg__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.leg__title {
  font-weight: 600;
  margin: 0;
}

.leg__body {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.detail-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.label {
  color: var(--muted);
  font-size: 13px;
  margin: 0 0 4px;
}

input,
select {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  font-size: 14px;
}

input[type='checkbox'] {
  width: 16px;
  height: 16px;
  padding: 0;
  margin: 0;
  accent-color: var(--accent);
}

.hidden {
  display: none !important;
}

input:focus,
select:focus {
  outline: 2px solid rgba(59, 130, 246, 0.4);
  border-color: var(--accent);
}

.helper {
  font-size: 12px;
  color: var(--muted);
  margin: 2px 0 0;
}

.totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.value {
  margin: 6px 0 0;
  font-size: 22px;
  font-weight: 700;
}

.highlight {
  color: var(--accent);
}

.saving {
  color: var(--success);
}

.divider {
  height: 1px;
  background: var(--border);
  margin: 14px 0 10px;
}

.breakdown {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.breakdown.empty {
  color: var(--muted);
}

.breakdown-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
}

.breakdown-item__title {
  margin: 0 0 4px;
  font-weight: 600;
}

.breakdown-item__meta {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 20px;
  background: rgba(59, 130, 246, 0.12);
  color: var(--accent);
  font-weight: 600;
  font-size: 12px;
}

.badge--regular {
  color: #fcd34d;
  background: rgba(252, 211, 77, 0.12);
}

.badge--highspeed {
  color: #34d399;
  background: rgba(52, 211, 153, 0.12);
}

.remove-btn {
  background: rgba(248, 113, 113, 0.12);
  color: #fecdd3;
  border: 1px solid rgba(248, 113, 113, 0.3);
  padding: 8px 10px;
}

.footer {
  margin-top: 12px;
  color: var(--muted);
  font-size: 13px;
}

.footer a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.footer a:hover {
  color: var(--accent);
}

.footer__links {
  margin-left: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

input.error,
select.error {
  border-color: var(--danger);
  outline: 1px solid rgba(248, 113, 113, 0.6);
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .hero__text h1 {
    font-size: 28px;
  }
}

@media (max-width: 640px) {
  .hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero__cta {
    width: 100%;
  }

  .hero__cta button {
    flex: 1;
  }
}