:root {
  --ink: #1f2a24;
  --muted: #5f6f66;
  --sand: #f7f1e6;
  --panel: #fffdf8;
  --line: #d9d0bf;
  --sea: #0f6a7a;
  --sunset: #c45c26;
  --radius: 0.9rem;
  --display: "Palatino Linotype", Palatino, serif;
  --ui: "Segoe UI", Tahoma, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(15, 106, 122, 0.12), transparent 28%),
    url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 60L60 0H30L0 30zM30 60L60 30V60z' fill='%23e8dfd0' fill-opacity='0.45'/%3E%3C/svg%3E"),
    var(--sand);
  color: var(--ink);
  font-family: var(--ui);
  line-height: 1.5;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--sea);
  outline-offset: 2px;
}

.app {
  width: min(70rem, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2.5rem;
}

.app-nav a { color: #e8f7f9; font-weight: 700; text-decoration: none; }

.app-hero {
  margin-bottom: 1rem;
  padding: 2rem 1.5rem;
  background:
    linear-gradient(120deg, rgba(15, 106, 122, 0.92), rgba(196, 92, 38, 0.85)),
    #0f6a7a;
  border-radius: 1.2rem;
  color: #fff;
}

.brand {
  margin: 0;
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.9;
}

.app-hero h1 {
  margin: 0.35rem 0 0.4rem;
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 2.8rem);
}

.app-hero p { margin: 0; max-width: 34rem; opacity: 0.94; }

.panel {
  padding: 1.15rem 1.2rem 1.35rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px rgba(31, 42, 36, 0.06);
}

.trip-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: end;
  margin-bottom: 1rem;
}

.trip-switch .field { min-width: 14rem; flex: 1; margin: 0; }

.readiness {
  flex-basis: 100%;
  margin: 0.25rem 0 0;
  color: var(--sea);
  font-weight: 700;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
}

.layout > * {
  min-width: 0;
}

.panel h2 {
  margin: 0 0 0.85rem;
  font-family: var(--display);
  font-size: 1.35rem;
}

.field { margin-bottom: 0.85rem; }
.field.grow { flex: 1; min-width: 10rem; }
.field label { display: block; margin-bottom: 0.28rem; font-weight: 650; font-size: 0.9rem; }

.field input,
.field select,
.field textarea,
.trip-switch select {
  width: 100%;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  font: inherit;
  background: #fff;
}

.actions, .pack-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: end;
}

button {
  padding: 0.55rem 0.95rem;
  border: 0;
  border-radius: 999px;
  background: var(--sea);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button.secondary { background: #efe7da; color: var(--ink); }

.message { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.9rem; }
.message.is-error { color: var(--sunset); }
.message.is-ok { color: var(--sea); }

.pack-list {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.pack-item {
  display: flex;
  gap: 0.65rem;
  align-items: center;
  padding: 0.7rem 0.8rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
}

.pack-item.is-done {
  opacity: 0.65;
  text-decoration: line-through;
}

.pack-item .tags {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.8rem;
}

.pack-item button {
  padding: 0.25rem 0.55rem;
  background: transparent;
  color: var(--sunset);
  font-size: 0.85rem;
}

@media (max-width: 860px) {
  .layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .field.grow {
    min-width: min(10rem, 100%);
  }
}