/* Kos & Deeksha Travel OS — mobile-first, large touch targets */
* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
:root {
  --bg: #f1f5f9; --card: #ffffff; --ink: #0f172a; --muted: #64748b;
  --accent: #2563eb; --accent-ink: #ffffff; --ok: #16a34a; --danger: #dc2626;
  --line: #e2e8f0; --radius: 14px;
}
html { font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--ink); min-height: 100vh;
}
h1 { font-size: 1.25rem; } h2 { font-size: 1.05rem; margin-bottom: .5rem; }
h3 { font-size: .95rem; margin: .6rem 0 .3rem; }
a { color: var(--accent); text-decoration: none; }
code { background: #f1f5f9; padding: 1px 6px; border-radius: 6px; font-size: .85rem; }

/* layout */
.content { padding: 0 .8rem 1rem; max-width: 640px; margin: 0 auto; }
.content.narrow { padding-top: 1rem; }
section { margin-top: 1.2rem; }

/* topbar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: var(--ink); color: #fff;
  padding: .7rem .9rem; display: flex; align-items: center; gap: .7rem;
  padding-top: calc(.7rem + env(safe-area-inset-top));
}
.topbar h1 { font-size: 1.05rem; line-height: 1.2; }
.topbar-title h1 { font-size: 1.1rem; }
.topbar-actions { margin-left: auto; display: flex; gap: .4rem; }
.topbar .dates { color: #cbd5e1; font-size: .8rem; }
.topbar .btn.ghost { color: #e2e8f0; border-color: #475569; }

/* buttons */
.btn {
  display: inline-block; border: 1.5px solid var(--line); border-radius: 12px;
  background: var(--card); color: var(--ink); font-size: .95rem; font-weight: 600;
  padding: .6rem 1rem; min-height: 44px; cursor: pointer; text-align: center;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.ghost { background: transparent; }
.btn.big { width: 100%; padding: .9rem; font-size: 1.05rem; }
.btn.small { min-height: 38px; padding: .35rem .7rem; font-size: .85rem; }
.btn.paid { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn.unpaid { background: #fef9c3; border-color: #facc15; color: #854d0e; }
button.chip-x {
  background: none; border: none; color: var(--muted); font-size: 1rem;
  min-width: 36px; min-height: 36px; cursor: pointer;
}
button.tick {
  background: none; border: 2px solid var(--line); border-radius: 50%;
  width: 34px; height: 34px; font-size: 1rem; color: var(--muted); cursor: pointer;
}
button.tick.on { background: var(--ok); border-color: var(--ok); color: #fff; }

/* trip cards */
.trip-card {
  display: block; background: var(--card); border-radius: var(--radius);
  padding: 1rem; margin: .9rem 0; box-shadow: 0 1px 3px rgba(15,23,42,.08);
  border-left: 6px solid var(--accent); color: var(--ink);
}
.trip-card.active { border-left-color: var(--ok); }
.trip-card.past { border-left-color: #94a3b8; opacity: .75; }
.trip-card h2 { font-size: 1.3rem; margin: .3rem 0; }
.trip-card .dates { color: var(--muted); font-size: .9rem; }
.trip-card .next { margin-top: .5rem; font-size: .9rem; font-weight: 600; }
.trip-card-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.countdown { color: var(--muted); font-size: .8rem; white-space: nowrap; }

.badge {
  display: inline-block; font-size: .72rem; font-weight: 700; padding: .2rem .55rem;
  border-radius: 999px; background: #e2e8f0; color: #334155; text-transform: uppercase; letter-spacing: .02em;
}
.badge.active { background: #dcfce7; color: #166534; }
.badge.upcoming { background: #dbeafe; color: #1e40af; }
.badge.past { background: #f1f5f9; color: #64748b; }
.badge.ok { background: #dcfce7; color: #166534; }
.badge.prio-must { background: #fee2e2; color: #991b1b; }
.badge.prio-maybe { background: #fef9c3; color: #854d0e; }
.badge.prio-backup { background: #e2e8f0; color: #475569; }
.badge.cat, .badge.owner { background: #ede9fe; color: #5b21b6; text-transform: none; }

/* cards / forms */
.card {
  background: var(--card); border-radius: var(--radius); padding: .8rem .9rem;
  margin: .55rem 0; box-shadow: 0 1px 2px rgba(15,23,42,.06);
}
.card-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.kv { font-size: .9rem; color: #334155; margin-top: .25rem; }
.note-text { font-size: .88rem; color: var(--muted); margin-top: .35rem; white-space: pre-wrap; }
.muted { color: var(--muted); font-size: .9rem; margin: .4rem 0; }
.small-note { font-size: .75rem; font-weight: 400; }
.flash { color: var(--ok); font-weight: 600; }
.flash.ok { display: block; margin-bottom: .8rem; }
.error { color: var(--danger); font-weight: 600; margin-bottom: .8rem; }

.stack label { display: block; margin-bottom: .7rem; font-size: .88rem; color: var(--muted); font-weight: 600; }
.stack input, .stack textarea, .stack select, .inline-add input {
  width: 100%; margin-top: .25rem; padding: .7rem .8rem; font-size: 1rem;
  border: 1.5px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
.stack input:focus, .stack textarea:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.row { display: flex; gap: .6rem; align-items: center; flex-wrap: wrap; }
.row > label { flex: 1; min-width: 130px; }
label.check { display: flex; align-items: center; gap: .5rem; font-weight: 600; color: var(--ink); }
label.check input { width: 22px; height: 22px; }

.inline { display: inline-block; }
.inline-add { display: flex; gap: .5rem; margin-top: .5rem; }
.inline-add input { flex: 1; }

details.editor {
  background: var(--card); border-radius: var(--radius); margin: .6rem 0;
  box-shadow: 0 1px 2px rgba(15,23,42,.06);
}
details.editor summary {
  padding: .8rem .9rem; font-weight: 700; color: var(--accent); cursor: pointer; min-height: 44px;
  display: flex; align-items: center;
}
details.editor > form, details.editor > .stack { padding: .2rem .9rem .9rem; }
details.danger-zone summary { color: var(--danger); }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: .5rem 0 .2rem; }
.chip {
  display: inline-flex; align-items: center; gap: .15rem; background: #dbeafe; color: #1e40af;
  border-radius: 999px; padding: .25rem .4rem .25rem .75rem; font-size: .85rem; font-weight: 600;
}

/* packing */
.pack-group h3 { display: flex; gap: .4rem; align-items: baseline; }
.pack-row { display: flex; align-items: center; gap: .6rem; padding: .3rem 0; }
.pack-name { flex: 1; font-size: .95rem; }
.pack-name.strike { text-decoration: line-through; color: var(--muted); }
.pack-group { background: var(--card); border-radius: var(--radius); padding: .6rem .9rem; margin: .55rem 0; box-shadow: 0 1px 2px rgba(15,23,42,.06); }

/* tasks */
.task.done .task-text { text-decoration: line-through; color: var(--muted); }

/* itinerary */
.itin .stack { margin-top: .4rem; }

/* login */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 90vh; padding: 1rem; }
.login-card {
  background: var(--card); border-radius: 18px; padding: 1.6rem 1.3rem; width: 100%; max-width: 380px;
  box-shadow: 0 4px 16px rgba(15,23,42,.12); text-align: center;
}
.login-card h1 { margin-bottom: 1.2rem; font-size: 1.35rem; }
.login-card label { display: block; text-align: left; margin-bottom: .8rem; font-size: .88rem; color: var(--muted); font-weight: 600; }
.login-card input { width: 100%; margin-top: .25rem; padding: .75rem .8rem; font-size: 1rem; border: 1.5px solid var(--line); border-radius: 10px; }
.login-card .error { margin-top: .8rem; }

/* bottom nav */
.bottomnav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 30;
  background: #ffffff; border-top: 1px solid var(--line);
  display: flex; justify-content: center; padding: .5rem .8rem;
  padding-bottom: calc(.5rem + env(safe-area-inset-bottom));
}
.bottomnav.scroll { overflow-x: auto; justify-content: flex-start; gap: .2rem; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.bottomnav.scroll::-webkit-scrollbar { display: none; }
.bottomnav a {
  flex-shrink: 0; padding: .55rem .75rem; border-radius: 10px; font-size: .82rem; font-weight: 700;
  color: #334155; min-height: 40px; display: inline-flex; align-items: center;
}
.bottomnav a:active { background: #e2e8f0; }
.newtrip { min-width: 60%; }

.empty { text-align: center; margin-top: 4rem; color: var(--muted); }
.empty p { margin-bottom: 1rem; }

@media (min-width: 700px) {
  .content { max-width: 720px; }
}