:root {
  color-scheme: light dark;
  --bg: #f3f4f6;
  --card: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --border: #d1d5db;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --danger: #dc2626;
  --warn-bg: #fef3c7;
  --warn-text: #92400e;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1120;
    --card: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --border: #374151;
    --accent: #3b82f6;
    --warn-bg: #3b2a06;
    --warn-text: #fcd34d;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: max(12px, env(safe-area-inset-top)) 12px max(24px, env(safe-area-inset-bottom));
}

h1 { font-size: 1.4rem; margin: 0 0 .75rem; }
h2 { font-size: 1.1rem; margin: 1.25rem 0 .5rem; }
h2:first-child { margin-top: 0; }

[hidden] { display: none !important; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.view.card { margin-top: 10vh; }

label { display: block; margin: .75rem 0; font-size: .9rem; color: var(--muted); }
label > input, label > textarea, label > .row { margin-top: .25rem; }
label.check { display: flex; align-items: center; gap: .5rem; color: var(--text); cursor: pointer; }
label.check > input { width: auto; margin: 0; accent-color: var(--accent); }

input, textarea, select {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .6rem .7rem;
}
textarea { resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button, .button {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: .55rem .9rem;
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
  white-space: nowrap;
  display: inline-block;
  margin: 0;
}
button:disabled { opacity: .55; cursor: wait; }
button.secondary, .button.secondary { background: transparent; color: var(--accent); }
button.ghost { background: transparent; border-color: transparent; color: var(--text); }
button.danger, .danger { color: var(--danger); }
button.secondary.danger { border-color: var(--danger); }

form > button[type=submit] { width: 100%; margin-top: .5rem; }

.row { display: flex; gap: .5rem; align-items: center; margin: .6rem 0; }
.row > input, .row > select, .row > textarea { flex: 1; min-width: 0; }
.row.wrap { flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.spacer { flex: 1; }

.topbar { display: flex; align-items: center; justify-content: space-between; }
.topbar h1 { margin: 0; }

.tabs {
  display: flex;
  gap: 4px;
  margin: .75rem 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px;
}
.tabs button {
  flex: 1;
  padding: .5rem .25rem;
  background: transparent;
  border-color: transparent;
  color: var(--muted);
  font-size: .9rem;
}
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-text); }

.entries { list-style: none; margin: 0; padding: 0; }
.entry {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 8px;
}
.entry-head { display: flex; flex-direction: column; margin-bottom: .5rem; overflow-wrap: anywhere; }
.entry-actions { display: flex; gap: .4rem; flex-wrap: wrap; }

.muted { color: var(--muted); }
.small { font-size: .85rem; }
.center { text-align: center; }
.mono { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; }
.error { color: var(--danger); min-height: 1.2em; margin: .5rem 0 0; }
.warn { background: var(--warn-bg); color: var(--warn-text); border-radius: 8px; padding: .6rem .8rem; font-size: .9rem; }

.result {
  display: block;
  min-height: 2.6rem;
  padding: .6rem .7rem;
  border: 1px dashed var(--border);
  border-radius: 8px;
  overflow-wrap: anywhere;
  user-select: all;
}

code { font-size: .85em; background: var(--bg); padding: 1px 4px; border-radius: 4px; }

dialog {
  width: min(520px, calc(100vw - 24px));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  padding: 16px;
}
dialog::backdrop { background: rgb(0 0 0 / .5); }

#toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: .6rem 1rem;
  border-radius: 999px;
  box-shadow: 0 4px 16px rgb(0 0 0 / .25);
  z-index: 10;
  max-width: calc(100vw - 32px);
}
#toast.error { background: var(--danger); color: #fff; }

.offscreen { position: fixed; left: -9999px; top: 0; }