:root {
  --color-bg: #f4f6f9;
  --color-surface: #ffffff;
  --color-border: #e2e5ea;
  --color-text: #1c2230;
  --color-text-muted: #667085;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-route-1: #2563eb;
  --color-route-2: #9333ea;
  --color-headwind: #e0433b;
  --color-crosswind: #e8b93a;
  --color-tailwind: #2fa860;
  --shadow-card: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0f1115;
    --color-surface: #171a21;
    --color-border: #2a2e38;
    --color-text: #e7e9ee;
    --color-text-muted: #9aa2b1;
    --color-accent: #5b8def;
    --color-accent-hover: #7ba3f5;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.4), 0 1px 3px rgba(0, 0, 0, 0.3);
  }
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

/* ============================
   HEADER
   ============================ */

.page-header {
  padding: 28px 32px 8px;
}

.page-header-title {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo-mark {
  font-size: 40px;
  line-height: 1;
}

.page-header h1 {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 700;
}

.subtitle {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

/* ============================
   LAYOUT
   ============================ */

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 32px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.card h2 {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.results {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.map-card {
  flex: 3;
  padding: 0;
  overflow: hidden;
  min-width: 0;
}

.side-panel {
  flex: 1;
  min-width: 280px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

@media (max-width: 900px) {
  .results {
    flex-direction: column;
  }
  .side-panel {
    min-width: 0;
    width: 100%;
  }
  .page-header {
    padding: 20px 16px 4px;
  }
  .layout {
    padding: 16px 16px 32px;
  }
}

/* ============================
   TOOLBAR / FORM
   ============================ */

.toolbar-form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 16px;
}

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

.route-input-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.route-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.route-dot-1 {
  background: var(--color-route-1);
}

.route-dot-2 {
  background: var(--color-route-2);
}

.route-input-row {
  display: flex;
  gap: 8px;
}

.toolbar-datetime {
  display: flex;
  gap: 12px;
}

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

.field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-muted);
}

input[type="file"],
input[type="date"],
input[type="time"],
select {
  font-family: inherit;
  font-size: 14px;
  padding: 9px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
  color: var(--color-text);
}

input[type="file"] {
  max-width: 220px;
}

.link-button {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  padding: 0;
}

.link-button:hover {
  text-decoration: underline;
}

.primary-button {
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.15s ease;
}

.primary-button:hover {
  background: var(--color-accent-hover);
}

/* ============================
   MAP
   ============================ */

#map {
  height: 650px;
  width: 100%;
  display: block;
}

/* ============================
   ROUTE CARDS / SUMMARY
   ============================ */

.route-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.summary {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.summary td {
  padding: 6px 0;
  border-bottom: 1px solid var(--color-border);
}

.summary td:first-child {
  color: var(--color-text-muted);
}

.summary td:last-child {
  text-align: right;
  font-weight: 600;
}

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

/* ============================
   LEGEND
   ============================ */

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

.legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--color-text-muted);
}

.swatch {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
}

.swatch-headwind {
  background: var(--color-headwind);
}

.swatch-crosswind {
  background: var(--color-crosswind);
}

.swatch-tailwind {
  background: var(--color-tailwind);
}

.swatch-line-solid,
.swatch-line-dashed {
  width: 20px;
  height: 0;
  border-top: 3px solid var(--color-text-muted);
  background: none;
  border-radius: 0;
}

.swatch-line-dashed {
  border-top-style: dashed;
}

/* ============================
   STATUS
   ============================ */

#status {
  font-size: 14px;
  color: var(--color-text-muted);
}