:root {
  --bg: #f6f5f2;
  --surface: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --border: #dddcd7;
  --accent: #2f6fdf;
  --accent-text: #ffffff;
  --danger: #c0392b;
  --success-bg: #e6f4ea;
  --success-text: #1e5b32;
  --error-bg: #fdecea;
  --error-text: #8a1f15;
  --radius: 10px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151517;
    --surface: #1f1f23;
    --text: #ececef;
    --muted: #9b9ba3;
    --border: #34343a;
    --accent: #5b8ff0;
    --danger: #ef6b5e;
    --success-bg: #173322;
    --success-text: #a6e0b6;
    --error-bg: #3a1a17;
    --error-text: #f5b4ac;
  }
}

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

/* Author display rules (grid, block, flex) would otherwise override the hidden attribute. */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }

h1 { font-size: 1.6rem; line-height: 1.2; margin: 0 0 1rem; overflow-wrap: anywhere; }

/* Header */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.brand { font-weight: 700; color: var(--text); text-decoration: none; margin-right: auto; }
.user { color: var(--muted); font-size: 0.9rem; }
.user strong { color: var(--text); font-weight: 600; }

.inner { max-width: 40rem; margin: 0 auto; padding: 0.75rem 1rem; }
main.inner { padding-top: 1.5rem; padding-bottom: 3rem; }

/* Buttons */
.button, button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.button.primary, button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-text);
}
.button.danger, button.danger { color: var(--danger); border-color: currentColor; background: transparent; }
button.link {
  min-height: 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--accent);
  font-weight: 400;
  text-decoration: underline;
}
.block { width: 100%; }

/* Page toolbar: title + action */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: 1rem; }
.toolbar h1 { margin: 0; }

/* Segmented tabs */
.tabs { display: flex; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-bottom: 1rem; }
.tabs a {
  flex: 1;
  text-align: center;
  padding: 0.6rem;
  color: var(--muted);
  text-decoration: none;
  background: var(--surface);
}
.tabs a + a { border-left: 1px solid var(--border); }
.tabs a[aria-current="page"] { color: var(--text); font-weight: 600; background: var(--bg); }

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}
.card-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; }
.card-list a.card { display: block; color: inherit; text-decoration: none; }
.card-list a.card:hover, .card-list a.card:focus-visible { border-color: var(--accent); }
.card-title { font-weight: 600; font-size: 1.05rem; overflow-wrap: anywhere; }
.card-text { color: var(--muted); margin: 0.25rem 0 0; overflow-wrap: anywhere; }
.meta { color: var(--muted); font-size: 0.875rem; }

.empty { text-align: center; color: var(--muted); padding: 2rem 1rem; }
.empty p { margin: 0 0 1rem; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  background: var(--border);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 600;
}

.description { overflow-wrap: anywhere; }
.description p:first-child { margin-top: 0; }
.actions { margin-top: 1.5rem; display: grid; gap: 0.75rem; }
.back { display: inline-block; margin-top: 1.5rem; }

/* Forms */
form.stack > div { margin-bottom: 1rem; }
form.stack label { display: block; font-weight: 600; margin-bottom: 0.3rem; }
input[type="text"], input[type="password"], input[type="email"], textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  font: inherit; /* 16px keeps iOS from zooming on focus */
}
input:focus, textarea:focus, button:focus-visible, .button:focus-visible, a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.helptext { display: block; color: var(--muted); font-size: 0.875rem; margin-top: 0.25rem; }
.errorlist { list-style: none; padding: 0; margin: 0 0 0.4rem; color: var(--danger); font-size: 0.9rem; }
.errorlist.nonfield { background: var(--error-bg); color: var(--error-text); padding: 0.75rem; border-radius: var(--radius); margin-bottom: 1rem; }

/* Flash messages */
.messages { list-style: none; padding: 0; margin: 0 0 1rem; }
.messages li { padding: 0.75rem 1rem; border-radius: var(--radius); background: var(--success-bg); color: var(--success-text); }
.messages li.error { background: var(--error-bg); color: var(--error-text); }

.narrow { max-width: 24rem; margin: 0 auto; }

dl.details { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1rem; margin: 0; }
dl.details dt { color: var(--muted); }
dl.details dd { margin: 0; overflow-wrap: anywhere; }
[aria-invalid="true"] { border-color: var(--danger); }
.card > :first-child { margin-top: 0; }
.card > :last-child { margin-bottom: 0; }

/* Jar state */
:root { --open-bg: #e8f0fe; --open-text: #1a4fa0; --closed-bg: #e6f4ea; --closed-text: #1e5b32; }
@media (prefers-color-scheme: dark) {
  :root { --open-bg: #1b2a44; --open-text: #a9c4f5; --closed-bg: #173322; --closed-text: #a6e0b6; }
}
.badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0 0 1rem; }
.badge.state-open { background: var(--open-bg); color: var(--open-text); }
.badge.state-closed { background: var(--closed-bg); color: var(--closed-text); }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 0.75rem; }
.card-head .badge { flex-shrink: 0; }

h2 { font-size: 1.2rem; margin: 2rem 0 0.75rem; }
.step { color: var(--muted); font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; margin: 0 0 0.25rem; }

/* Photos */
figure { margin: 0; }
figcaption { color: var(--muted); font-size: 0.85rem; margin-top: 0.35rem; }
.photo { display: block; width: 100%; height: auto; border-radius: var(--radius); background: var(--border); }
.photo-frame { margin: 1rem 0; }

.file-input {
  display: block;
  width: 100%;
  padding: 0.75rem;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font: inherit;
}
.file-input::file-selector-button {
  margin-right: 0.75rem;
  min-height: 40px;
  padding: 0.4rem 0.9rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
}

form.stack label.confirm, label.confirm { display: flex; gap: 0.75rem; align-items: flex-start; font-weight: 400; cursor: pointer; }
label.confirm input { width: 1.4rem; height: 1.4rem; flex-shrink: 0; margin: 0.1rem 0 0; accent-color: var(--accent); }

/* Comparison */
.compare { margin: 1rem 0; }
.compare-side { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.flip-stage { display: block; width: 100%; padding: 0; border: 0; background: none; min-height: 0; cursor: pointer; }
.flip-label { color: var(--muted); font-size: 0.9rem; text-align: center; margin: 0.5rem 0 0; }
.verdict { display: grid; gap: 0.75rem; }
.verdict .danger { background: var(--surface); }

/* History */
.history { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; }
.history-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; margin-bottom: 0.5rem; }
.verdict-intact { color: var(--closed-text); font-weight: 600; }
.verdict-changed { color: var(--danger); font-weight: 600; }
.check-row { display: grid; grid-template-columns: 6rem 1fr; gap: 0.75rem; align-items: center; }
.check-row p { margin: 0; }
figcaption .verdict-intact, figcaption .verdict-changed { display: block; }

/* Check links */
:root { --notice-bg: #fff4d6; --notice-text: #6b4a00; }
@media (prefers-color-scheme: dark) { :root { --notice-bg: #3a2f12; --notice-text: #f3d68a; } }
.notice { background: var(--notice-bg); color: var(--notice-text); padding: 0.75rem 1rem; border-radius: var(--radius); margin-bottom: 1rem; }
.notice a { color: inherit; font-weight: 600; }
.to-review { color: var(--notice-text); background: var(--notice-bg); display: inline-block; padding: 0.1rem 0.5rem; border-radius: 6px; font-size: 0.85rem; font-weight: 600; margin: 0.25rem 0 0; }
.link-row { margin-bottom: 0.75rem; display: grid; gap: 0.6rem; }
.link-row p { margin: 0; }
.copy-row { display: flex; gap: 0.5rem; }
.copy-row input { flex: 1; min-width: 0; font-size: 0.9rem; }
.copy-row button { flex-shrink: 0; }
.link-foot { display: flex; justify-content: space-between; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.badge.link-active { background: var(--open-bg); color: var(--open-text); }
.badge.link-used { background: var(--notice-bg); color: var(--notice-text); }
select { width: 100%; min-height: 44px; padding: 0.5rem 0.75rem; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); color: var(--text); font: inherit; }
.tips { padding-left: 1.2rem; }
.tips li { margin-bottom: 0.25rem; }
.link-note h1 { font-size: 1.3rem; }
.link-note { color: var(--text); }
.link-note p { color: var(--muted); }

/* History timeline */
.timeline { list-style: none; margin: 0; padding: 0 0 0 1rem; border-left: 2px solid var(--border); display: grid; gap: 0.75rem; }
.event { position: relative; display: grid; grid-template-columns: 1fr; gap: 0.75rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 0.75rem; }
.event::before { content: ""; position: absolute; left: calc(-1rem - 7px); top: 1.1rem; width: 12px; height: 12px; border-radius: 50%; background: var(--muted); border: 2px solid var(--bg); }
.event:has(.event-photo) { grid-template-columns: 5.5rem 1fr; }
.event-photo { display: block; }
.event-body p { margin: 0.25rem 0 0; }
.event-body .button { margin-top: 0.5rem; min-height: 40px; }
.event-title { font-weight: 600; }
.event-closed::before { background: var(--closed-text); }
.event-opened::before { background: var(--open-text); }
.event-link_photo::before, .event-link_checked::before { background: var(--notice-text); }
.event:has(.verdict-changed)::before { background: var(--danger); }
.site-footer { color: var(--muted); font-size: 0.8rem; text-align: center; padding-top: 0; padding-bottom: 2rem; }