@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap");

:root {
  color-scheme: light;
  --bg: #f5f6f8;
  --bg-alt: #e8f0f2;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-strong: #ffffff;
  --text: #16181f;
  --muted: #6a7285;
  --accent: #4b6b8a;
  --accent-soft: rgba(75, 107, 138, 0.14);
  --accent-2: #6b829a;
  --accent-3: #8cb8b2;
  --border: rgba(22, 24, 31, 0.1);
  --shadow: 0 20px 60px rgba(75, 107, 138, 0.18);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1116;
  --bg-alt: #151a21;
  --surface: rgba(24, 29, 39, 0.92);
  --surface-strong: #1e2430;
  --text: #eef1f6;
  --muted: #9aa3b2;
  --accent: #6f8fa8;
  --accent-soft: rgba(111, 143, 168, 0.18);
  --accent-2: #7f94a8;
  --accent-3: #7fb0ab;
  --border: rgba(238, 241, 246, 0.1);
  --shadow: 0 24px 70px rgba(10, 12, 18, 0.5);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Space Grotesk", sans-serif;
  background: radial-gradient(circle at top, var(--bg-alt), var(--bg));
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

h1,
h2,
h3,
.logo-title {
  font-family: "Space Grotesk", "IBM Plex Sans", sans-serif;
  letter-spacing: -0.02em;
}

.aurora {
  position: fixed;
  inset: -20% 0 0 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(140, 184, 178, 0.18), transparent 60%),
    radial-gradient(circle at 85% 10%, rgba(107, 130, 154, 0.18), transparent 58%),
    radial-gradient(circle at 50% 60%, rgba(75, 107, 138, 0.16), transparent 62%);
  filter: blur(18px);
  opacity: 0.55;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 48px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.logo-mark svg {
  width: 26px;
  height: 26px;
  display: block;
}

.logo-title {
  font-weight: 600;
}

.logo-sub {
  font-size: 0.9rem;
  color: var(--muted);
}

.controls {
  display: flex;
  gap: 12px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border 0.2s ease;
  font-weight: 600;
}

.toggle:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.toggle-lang span {
  opacity: 0.4;
  transition: opacity 0.2s ease;
}

.toggle-lang span.active {
  opacity: 1;
}

.toggle-icon {
  font-size: 1.1rem;
}

.hero {
  margin-top: 40px;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 32px;
}

.hero-text h1 {
  font-size: clamp(2.4rem, 3.5vw, 3.2rem);
  margin-bottom: 12px;
}

.hero-text p {
  color: var(--muted);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 12px;
}

.primary,
.ghost {
  border: none;
  border-radius: 16px;
  padding: 12px 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: var(--shadow);
}

.ghost {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

.primary:hover,
.ghost:hover {
  transform: translateY(-1px);
}

.hero-stats {
  display: grid;
  gap: 16px;
}

.stat-card {
  padding: 16px 18px;
  border-radius: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.stat-label {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 600;
  margin: 8px 0;
}

.stat-foot {
  color: var(--muted);
  font-size: 0.85rem;
}

.panel {
  margin-top: 40px;
  background: var(--surface);
  border-radius: 24px;
  padding: 24px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.panel-header h2 {
  margin: 0 0 6px 0;
}

.panel-header p {
  margin: 0;
  color: var(--muted);
}

.panel-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.85rem;
}

.panel-grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.filters {
  display: grid;
  gap: 16px;
  position: sticky;
  top: 24px;
  align-self: start;
  max-height: calc(100vh - 180px);
  overflow-y: auto;
  padding-right: 6px;
}

.field {
  display: grid;
  gap: 8px;
  font-weight: 600;
  color: var(--muted);
}

.field input,
.field select {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  color: var(--text);
  font-weight: 600;
}

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

.range output {
  font-weight: 600;
  color: var(--accent);
}

.results {
  display: grid;
  gap: 16px;
}

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

.results-title {
  font-weight: 700;
  font-size: 1.1rem;
}

.results-sub {
  color: var(--muted);
}

.results-summary {
  background: var(--accent-soft);
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 0.85rem;
}

.results-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.results-loading {
  display: none;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.analysis {
  background: linear-gradient(120deg, rgba(94, 101, 245, 0.1), rgba(108, 225, 217, 0.18));
  border-radius: 18px;
  padding: 14px 16px;
  border: 1px solid var(--border);
}

.analysis-title {
  font-weight: 700;
  margin-bottom: 6px;
}

.results-list {
  display: grid;
  gap: 14px;
}

.route-card {
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: var(--surface-strong);
  display: grid;
  gap: 14px;
  animation: floatIn 0.4s ease;
}

.route-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.route-path {
  min-width: 0;
}

.route-title {
  font-weight: 700;
  font-size: 1.1rem;
}

.route-cargo {
  margin-top: 6px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  min-width: 0;
}

.route-cargo span {
  text-transform: uppercase;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--accent);
  flex-shrink: 0;
}

.cargo-name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.route-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tag {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.65rem;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--text);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.tag-mode {
  background: rgba(111, 143, 168, 0.25);
}

.route-profit-block {
  text-align: right;
  min-width: 140px;
}

.route-profit-label {
  text-transform: uppercase;
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--muted);
}

.route-profit-value {
  margin-top: 6px;
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--accent);
}

.route-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--surface);
}

.metric-label {
  text-transform: uppercase;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.metric-value {
  margin-top: 4px;
  font-weight: 600;
}

.route-signal {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.signal-item {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--muted);
}

.signal-item strong {
  color: var(--text);
  font-weight: 600;
}

.results-empty {
  display: none;
  padding: 18px;
  border-radius: 16px;
  border: 1px dashed var(--border);
  text-align: center;
  color: var(--muted);
}

.footer {
  margin-top: 32px;
  color: var(--muted);
  text-align: center;
  font-size: 0.85rem;
}

.reveal {
  animation: floatIn 0.8s ease both;
  animation-delay: var(--delay, 0s);
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

  .panel-grid {
    grid-template-columns: 1fr;
  }

  .filters {
    position: static;
    max-height: none;
    padding-right: 0;
  }

  .route-top {
    flex-direction: column;
    align-items: flex-start;
  }

  .route-profit-block {
    text-align: left;
  }

  .route-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .route-signal {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .controls {
    width: 100%;
    justify-content: space-between;
  }

  .hero-actions {
    flex-direction: column;
  }

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

  .results-head {
    flex-direction: column;
    align-items: flex-start;
  }
}