:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --text: #1b1d21;
  --muted: #6b7280;
  --line: #e4e6ea;
  --accent: #03c75a;
  --accent-dark: #02a54b;
  --accent-soft: #e6f8ee;
  --danger: #d93a3a;
  --warn-bg: #fff7e6;
  --warn-line: #f5d9a0;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --surface: #1f2226;
    --text: #e8eaed;
    --muted: #9aa0a8;
    --line: #33373d;
    --accent-soft: #163626;
    --warn-bg: #3a2f17;
    --warn-line: #6b5420;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif;
  line-height: 1.5;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

.top { background: var(--surface); border-bottom: 1px solid var(--line); padding-top: 24px; position: sticky; top: 0; z-index: 5; }
h1 { margin: 0; font-size: 22px; }
.sub { margin: 4px 0 14px; color: var(--muted); font-size: 14px; }
.tabs { display: flex; gap: 4px; }
.tab {
  border: 0; background: none; color: var(--muted); font: inherit; font-weight: 600;
  padding: 10px 14px; border-bottom: 3px solid transparent; cursor: pointer;
}
.tab.is-active { color: var(--text); border-bottom-color: var(--accent); }
.badge { display: inline-block; min-width: 20px; padding: 0 6px; border-radius: 10px; background: var(--line); font-size: 12px; text-align: center; }
.tab.is-active .badge { background: var(--accent); color: #fff; }

main { padding-top: 20px; padding-bottom: 60px; }

.search { display: flex; gap: 8px; }
.search input {
  flex: 1; min-width: 0; font: inherit; font-size: 16px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--text);
}
.search input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

.btn {
  font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--surface); color: var(--text);
  padding: 10px 16px; border-radius: 10px; cursor: pointer; white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.small { padding: 6px 10px; font-size: 13px; }
.btn.wide { display: block; width: 100%; margin-top: 12px; }
.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-dark); }
.btn.danger { color: var(--danger); }

.keywords { margin-top: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.keywords-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.keywords h2 { margin: 0; font-size: 15px; }
.chips { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips:empty { display: none; }
.chip { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.chip.is-current { border-color: var(--accent); background: var(--accent-soft); }
.chip-go { border: 0; background: none; color: var(--text); font: inherit; font-size: 14px; padding: 6px 4px 6px 12px; cursor: pointer; }
.chip-count { color: var(--muted); font-size: 12px; margin-left: 6px; }
.chip-del { border: 0; background: none; color: var(--muted); cursor: pointer; padding: 6px 10px 6px 6px; font-size: 14px; }
.chip-del:hover { color: var(--danger); }
.hint { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.notice { margin-top: 16px; padding: 12px 14px; border-radius: 10px; background: var(--warn-bg); border: 1px solid var(--warn-line); font-size: 14px; }
.meta { margin: 18px 0 0; color: var(--muted); font-size: 13px; }

.cards { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 10px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; }
.card-title { font-size: 16px; font-weight: 700; color: var(--text); text-decoration: none; display: block; overflow-wrap: anywhere; }
.card-title:hover { text-decoration: underline; }
.card-info { margin-top: 4px; color: var(--muted); font-size: 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.card-desc { margin: 8px 0 0; font-size: 14px; color: var(--muted); overflow-wrap: anywhere; }
.card-actions { margin-top: 10px; display: flex; gap: 8px; justify-content: flex-end; }
.tag { background: var(--accent-soft); color: var(--accent-dark); border-radius: 6px; padding: 0 6px; }

.memo { margin-top: 10px; }
.memo textarea {
  width: 100%; min-height: 64px; resize: vertical; font: inherit; font-size: 14px;
  padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text);
}
.memo-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; color: var(--muted); font-size: 12px; gap: 8px; }

.empty { text-align: center; color: var(--muted); padding: 48px 0; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0;
  background: #1b1d21; color: #fff; padding: 10px 16px; border-radius: 10px; font-size: 14px;
  transition: opacity .2s, transform .2s; pointer-events: none; max-width: calc(100% - 32px);
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 520px) {
  .keywords-head { flex-wrap: wrap; }
}