:root {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light dark;
  --bg: #f5f6fb;
  --card: #ffffff;
  --text: #1d2030;
  --muted: #6e728c;
  --primary: #ff7a18;
  --primary-dark: #d86100;
  --danger: #d7263d;
  --border: #e1e4f2;
}

*, *::before, *::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(255, 122, 24, 0.15), transparent 45%),
    linear-gradient(180deg, #fefefe 0%, #f5f6fb 100%);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
  color: var(--muted);
  margin: 0 0 0.3rem;
}

.hero-subtitle {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.app-shell {
  width: min(960px, 100vw);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 3.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero {
  text-align: center;
  padding: 0.5rem 0 1rem;
}

.hero h1 {
  margin: 0 0 0.25rem;
  font-size: clamp(1.7rem, 6vw, 2.5rem);
}

.card {
  background: var(--card);
  border-radius: 1.25rem;
  padding: 1.5rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  animation: fadeUp 0.5s ease;
  position: relative;
  overflow: hidden;
}

.card h2,
.card h3 {
  margin: 0;
}

.card-intro {
  margin: -0.35rem 0 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.view {
  display: none;
  flex-direction: column;
  gap: 1rem;
}

body[data-view="auth"] .view[data-view="auth"],
body[data-view="home"] .view[data-view="home"],
body[data-view="trips"] .view[data-view="trips"],
body[data-view="relays"] .view[data-view="relays"] {
  display: flex;
}

.auth-view {
  max-width: 520px;
  margin: 0 auto;
}

.auth-switch {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.auth-toggle {
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  padding: 0.65rem 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}

.auth-toggle.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.auth-panel {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
}

.profile-card {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.home-actions {
  display: grid;
  gap: 1rem;
}

.nav-card {
  border-radius: 1.1rem;
  border: 1px solid color-mix(in srgb, var(--primary) 25%, var(--border));
  background: radial-gradient(circle at 20% 20%, rgba(255, 122, 24, 0.15), transparent 60%),
    #fff;
  padding: 1.25rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-weight: 600;
  font-size: 1rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  position: relative;
}

.nav-card span {
  font-size: 1.15rem;
}

.nav-card small {
  color: var(--muted);
  font-weight: 400;
}

.nav-card::after {
  content: "\2192";
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
  color: var(--primary);
}

.nav-card:hover,
.nav-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px rgba(255, 122, 24, 0.2);
  border-color: var(--primary);
  outline: none;
}

.profile-details {
  gap: 1rem;
}

.profile-heading {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.profile-data {
  margin: 0;
  display: none;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

[data-profile-expanded="true"] .profile-data {
  display: grid;
}

.profile-details.collapsed .profile-data {
  display: none;
}

.profile-details.collapsed #profile-form {
  display: none;
}

.profile-data div {
  background: rgba(255, 122, 24, 0.08);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: 0.75rem;
}

.profile-data dt {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin: 0 0 0.3rem;
}

.profile-data dd {
  margin: 0;
  font-weight: 600;
  color: var(--text);
}

.profile-form-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.view-header {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.back-btn {
  align-self: flex-start;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.95rem;
}

input,
textarea {
  border-radius: 0.85rem;
  border: 1px solid var(--border);
  padding: 0.85rem 1rem;
  font-size: 1rem;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.98);
  color: var(--text);
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--primary) 40%, transparent);
  border-color: var(--primary);
}

button {
  font-size: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 0.85rem;
  border: none;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
}

button:not(:disabled):hover {
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  transform: translateY(-1px);
}

button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary) 40%, transparent);
  outline-offset: 2px;
}

.primary {
  background: var(--primary);
  color: #fff;
  border: 1px solid var(--primary);
  width: 100%;
}

.primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
}

.ghost {
  background: transparent;
  color: var(--primary);
  border: 1px solid color-mix(in srgb, var(--primary) 45%, var(--border));
  padding: 0.55rem 0.85rem;
  font-size: 0.9rem;
}

.ghost:hover:not(:disabled) {
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

.danger {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 60%, var(--border));
}

.form-status {
  min-height: 1.2rem;
  margin: 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 0.75rem;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.relay-card fieldset {
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1rem;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.relay-card fieldset + fieldset {
  margin-top: 0.85rem;
}

.relay-card legend {
  padding: 0 0.4rem;
  font-weight: 600;
  color: var(--muted);
}

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.pill input {
  width: auto;
  accent-color: var(--primary);
}

.summary {
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
}

.summary div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.summary-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.summary strong {
  font-size: 1.4rem;
}

.list ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.list-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.trip-row,
.relay-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
  animation: fadeUp 0.4s ease;
}

.trip-row:last-child,
.relay-row:last-child {
  border-bottom: none;
}

.trip-info,
.relay-row > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.trip-info span,
.relay-row span {
  color: var(--muted);
  font-size: 0.85rem;
}

.trip-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
}

.trip-meta span {
  font-weight: 600;
}

.status-chip {
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--primary) 40%, var(--border));
  padding: 0.25rem 0.75rem;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--primary);
  background: rgba(255, 122, 24, 0.12);
}

.empty-state {
  text-align: center;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (min-width: 768px) {
  .home-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .view.trips-view,
  .view.relays-view {
    gap: 1.5rem;
  }

  .trip-meta {
    flex-direction: row;
    align-items: center;
  }
}

@media (max-width: 640px) {
  .app-shell {
    padding: 1.5rem 1rem 2.5rem;
  }

  .hero {
    text-align: left;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .profile-card,
  .view-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-card {
    padding-right: 3rem;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }

  .trip-row,
  .relay-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .trip-meta {
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

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