:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c2330;
  --muted: #5b6472;
  --border: #dfe3ea;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --good: #15803d;
  --good-bg: #dcfce7;
  --warn: #92400e;
  --warn-bg: #fef3c7;
  --error: #b91c1c;
  --track: #e8ebf1;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 8px 24px rgba(15, 23, 42, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1420;
    --card: #171d2b;
    --text: #e7ebf3;
    --muted: #9aa4b6;
    --border: #2a3345;
    --accent: #3b82f6;
    --track: #232c3d;
    --good: #4ade80;
    --good-bg: #123524;
    --warn: #fbbf24;
    --warn-bg: #3a2c07;
    --error: #f87171;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.wrap.narrow { max-width: 460px; }
.wrap.wide { max-width: 1100px; }

h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
small.muted { display: block; margin-top: 4px; font-size: 0.85rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  margin-bottom: 18px;
}

label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin: 14px 0 6px;
}

input[type="text"],
input[type="url"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: 10px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
}

textarea { min-height: 90px; resize: vertical; }

input:focus, textarea:focus, select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
  border-color: var(--accent);
}

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font: inherit;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  text-decoration: none;
}

button.secondary, .btn.secondary {
  color: var(--text);
  background: transparent;
  border-color: var(--border);
}

button.danger {
  color: var(--error);
  background: transparent;
  border-color: var(--border);
}

button:disabled { opacity: 0.55; cursor: default; }

.row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.row.between { justify-content: space-between; }
.spacer { flex: 1; }

.error { color: var(--error); font-weight: 600; }
.notice { color: var(--good); font-weight: 600; }

.pill {
  display: inline-block;
  padding: 2px 10px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 999px;
  background: var(--track);
  color: var(--muted);
}
.pill-good {
  background: var(--good-bg);
  color: var(--good);
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.85em;
  background: var(--track);
  padding: 1px 5px;
  border-radius: 5px;
  word-break: break-all;
}

.choice {
  font-weight: 400;
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin: 8px 0;
  line-height: 1.4;
}

.tier-block {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-top: 16px;
}
.tier-head { margin-bottom: 4px; }
.tier-head h3 { margin: 0; font-size: 1rem; }
.tier-block .tier-remove { font-size: 0.85rem; padding: 6px 12px; }
.choice input { margin-top: 3px; }

.progress {
  height: 14px;
  background: var(--track);
  border-radius: 999px;
  overflow: hidden;
  margin: 10px 0;
}
.progress > span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.4s ease;
}

.count-big {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
}

.linkbox {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0;
}
.linkbox input {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
}
.linkbox button { flex-shrink: 0; }

.share-buttons { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.share-buttons a,
.share-buttons button {
  font: inherit;
  font-size: 0.9rem;
  font-weight: 400;
  padding: 8px 14px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
}

.reward {
  border: 1px solid var(--good);
  background: var(--good-bg);
  border-radius: var(--radius);
  padding: 22px;
}

/* Reward images (locked, unlocked, invite page, admin preview all share this)
   scale down to fit the card, never spill out at their native pixel size. */
.card img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  /* Never enlarged past its own natural size, but shown as large as the card
     allows. Centred whenever it ends up narrower than the card. */
  margin: 0 auto 12px;
}

.project-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
}
.project-item h3 { margin: 0 0 4px; font-size: 1.05rem; }

.snippet {
  width: 100%;
  min-height: 150px;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  white-space: pre;
  overflow: auto;
}

.step {
  padding-left: 20px;
  margin: 0 0 14px;
}

table.activity {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.activity th,
table.activity td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
}
table.activity th {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
table.activity tr.flagged td { background: var(--warn-bg); }
table.activity tr.flagged code { color: var(--text); }

/* editor with side-by-side live preview */
.editor-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 400px);
  gap: 20px;
  align-items: start;
}
.preview-col {
  position: sticky;
  top: 16px;
}
.preview-note { margin-bottom: 10px; }
.preview-cap {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  margin: 16px 0 6px;
}
.preview-cap:first-child { margin-top: 0; }
.preview-frame {
  border: 1px dashed var(--border);
  border-radius: 12px;
  padding: 14px;
  background: var(--bg);
}
.preview-frame .card {
  box-shadow: none;
  margin-bottom: 10px;
  padding: 16px;
}
.preview-frame .card:last-child { margin-bottom: 0; }
.preview-frame h1 { font-size: 1.15rem; }
.preview-frame h2 { font-size: 1rem; }
.preview-frame .count-big { font-size: 1.8rem; }

@media (max-width: 820px) {
  .editor-layout { grid-template-columns: 1fr; }
  .preview-col { position: static; }
}