:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #eef2f6;
  --text: #1b2430;
  --muted: #5d6b7c;
  --border: #dbe2ea;
  --primary: #1f5f8b;
  --primary-ink: #ffffff;
  --primary-soft: #e3eef7;
  --danger: #c0392b;
  --mark: #ffe58a;
  --mark-ink: #1b2430;
  --shadow: 0 1px 2px rgba(20, 30, 45, .06), 0 4px 14px rgba(20, 30, 45, .06);
  --radius: 14px;
  --font: 'Sarabun', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-head: 'Prompt', 'Sarabun', system-ui, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #11161d;
    --surface: #19212b;
    --surface-2: #222c38;
    --text: #e6ebf1;
    --muted: #9aa8b8;
    --border: #2c3846;
    --primary: #5aa9de;
    --primary-ink: #0d1824;
    --primary-soft: #1d3346;
    --danger: #ef6f61;
    --mark: #7a6418;
    --mark-ink: #fff7d6;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .25);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #11161d;
  --surface: #19212b;
  --surface-2: #222c38;
  --text: #e6ebf1;
  --muted: #9aa8b8;
  --border: #2c3846;
  --primary: #5aa9de;
  --primary-ink: #0d1824;
  --primary-soft: #1d3346;
  --danger: #ef6f61;
  --mark: #7a6418;
  --mark-ink: #fff7d6;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 4px 14px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 var(--font);
}
h1, h2, h3 { font-family: var(--font-head); font-weight: 600; line-height: 1.3; }
a { color: var(--primary); }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }
kbd {
  font: 12px/1 var(--font); padding: 2px 6px; border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 5px; background: var(--surface);
}
code { font-size: .9em; background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
.wrap { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }

/* ---------- header ---------- */
.demo-banner {
  background: #fff4d6; color: #6b4e00; font-size: 14px; text-align: center;
  padding: 6px 16px;
}
:root[data-theme="dark"] .demo-banner { background: #3a3013; color: #f3dc94; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .demo-banner { background: #3a3013; color: #f3dc94; } }

.site-header { background: var(--surface); border-bottom: 1px solid var(--border); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-top: 10px; padding-bottom: 10px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: inherit; min-width: 0; }
.brand strong { display: block; font-family: var(--font-head); font-size: 19px; line-height: 1.2; }
.brand small { display: block; color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.user-box { font-size: 13px; color: var(--muted); max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (max-width: 640px) { .user-box { display: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 38px; padding: 6px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); cursor: pointer;
  font-weight: 500; text-decoration: none; color: var(--text); white-space: nowrap;
}
.btn:hover { border-color: var(--primary); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-ghost { background: transparent; }
.btn-sm { min-height: 32px; padding: 4px 10px; font-size: 14px; border-radius: 8px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid transparent; background: transparent; cursor: pointer; font-size: 24px; line-height: 1;
}
.icon-btn:hover { background: var(--surface-2); }
.link-btn { background: none; border: 0; padding: 4px 2px; color: var(--primary); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ---------- search ---------- */
.search-area {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  padding: 16px 0 6px; border-bottom: 1px solid var(--border);
}
.search-box {
  display: flex; align-items: center; gap: 10px; background: var(--surface);
  border: 2px solid var(--border); border-radius: 16px; padding: 0 14px; box-shadow: var(--shadow);
  color: var(--muted);
}
.search-box:focus-within { border-color: var(--primary); }
.search-box input {
  flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--text);
  font-size: 18px; padding: 14px 0;
}
.search-box input::-webkit-search-cancel-button { display: none; }
.clear-btn { border: 0; background: var(--surface-2); width: 28px; height: 28px; border-radius: 50%; cursor: pointer; font-size: 18px; line-height: 1; color: var(--muted); }

.filters { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.filters select {
  min-height: 38px; padding: 6px 10px; border-radius: 10px; border: 1px solid var(--border);
  background: var(--surface); max-width: 100%;
}
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--surface); }
.seg button { border: 0; background: transparent; padding: 7px 12px; cursor: pointer; min-height: 36px; }
.seg button[aria-pressed="true"] { background: var(--primary); color: var(--primary-ink); }
@media (max-width: 640px) {
  .search-area { position: static; }
  .filters select { flex: 1 1 calc(50% - 8px); }
  .seg { flex: 1 1 100%; }
  .seg button { flex: 1; }
}

.admin-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; padding: 10px; border-radius: 12px; background: var(--primary-soft); }
.summary { margin: 10px 0 6px; color: var(--muted); font-size: 14px; }

/* ---------- groups ---------- */
#results { padding-top: 12px; padding-bottom: 40px; min-height: 50vh; }
.year { margin: 0 0 14px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.year > summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 10px;
  padding: 14px 16px; font-family: var(--font-head); font-size: 20px; font-weight: 600;
}
.year > summary::-webkit-details-marker { display: none; }
.year > summary::before {
  content: ''; width: 9px; height: 9px; border-right: 2px solid var(--muted); border-bottom: 2px solid var(--muted);
  transform: rotate(-45deg); transition: transform .15s; margin-right: 4px;
}
.year[open] > summary::before { transform: rotate(45deg); }
.count { font-family: var(--font); font-size: 13px; font-weight: 500; color: var(--muted); background: var(--surface-2); padding: 2px 10px; border-radius: 99px; }
.year-body { padding: 0 16px 16px; }
.month + .month { margin-top: 18px; }
.month h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; margin: 4px 0 10px; color: var(--muted); }
.month h3::after { content: ''; flex: 1; height: 1px; background: var(--border); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
@media (max-width: 640px) { .year-body { padding: 0 10px 12px; } .grid { grid-template-columns: 1fr; } }

/* ---------- card ---------- */
.card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); }
.cover { position: relative; aspect-ratio: 16 / 7; display: grid; place-items: center; background: var(--cat-bg, var(--surface-2)); font-size: 40px; }
.cover:not(:has(img)) { aspect-ratio: 16 / 5; }
.cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.card-body { display: flex; flex-direction: column; gap: 6px; padding: 12px 14px 14px; flex: 1; }
.card h4 { margin: 0; font-family: var(--font-head); font-size: 17px; font-weight: 600; line-height: 1.35; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; font-size: 14px; color: var(--muted); }
.chip { display: inline-block; font-size: 13px; padding: 1px 9px; border-radius: 99px; background: var(--cat-bg, var(--surface-2)); color: var(--text); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { border: 1px solid var(--border); background: transparent; border-radius: 99px; padding: 1px 9px; font-size: 13px; cursor: pointer; color: var(--muted); }
.tag:hover { border-color: var(--primary); color: var(--primary); }
.small { font-size: 14px; color: var(--muted); margin: 0; }
.links { margin-top: auto; padding-top: 6px; display: flex; flex-direction: column; gap: 6px; }
.link-row { display: flex; align-items: center; gap: 6px; }
.link-row .label { flex: 1; min-width: 0; font-size: 14px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.link-row.single .btn-primary { flex: 1; }
.card-admin { display: flex; gap: 8px; border-top: 1px dashed var(--border); margin-top: 8px; padding-top: 8px; }
mark { background: var(--mark); color: var(--mark-ink); border-radius: 3px; padding: 0 1px; }

.state-msg { text-align: center; color: var(--muted); padding: 48px 16px; font-size: 17px; }
.state-msg .big { font-size: 44px; display: block; margin-bottom: 6px; }

.site-footer { color: var(--muted); font-size: 13px; padding-bottom: 28px; text-align: center; }

/* ---------- dialogs ---------- */
.dlg {
  width: min(640px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); padding: 0;
  border: 1px solid var(--border); border-radius: 16px; background: var(--surface); color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
}
.dlg-wide { width: min(920px, calc(100vw - 24px)); }
.dlg-small { width: min(420px, calc(100vw - 24px)); }
.dlg::backdrop { background: rgba(10, 16, 24, .5); }
.dlg form, .dlg-inner { display: flex; flex-direction: column; max-height: calc(100dvh - 26px); }
.dlg-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 12px 0 20px; }
.dlg-head h2 { margin: 0; font-size: 20px; }
.dlg-body { padding: 14px 20px; overflow: auto; }
.dlg-body h3 { font-size: 16px; margin: 14px 0 8px; }
.dlg-body h3:first-child { margin-top: 0; }
.dlg-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 12px 20px 16px; border-top: 1px solid var(--border); }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 14px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 560px) { .form-grid { grid-template-columns: 1fr; } }
.links-field legend { font-size: 14px; font-weight: 500; }
.form-grid label { display: flex; flex-direction: column; gap: 4px; font-size: 14px; font-weight: 500; }
.form-grid em { color: var(--danger); font-style: normal; }
.form-grid input, .form-grid select, .form-grid textarea, #importText, .inline-form input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); font-weight: 400;
}
.form-grid input:focus, .form-grid select:focus, .form-grid textarea:focus, #importText:focus, .inline-form input:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
.hint { color: var(--primary); font-weight: 400; min-height: 1em; }
.links-field { border: 1px solid var(--border); border-radius: 12px; padding: 10px 12px 6px; margin: 0; }
.links-field legend { padding: 0 6px; }
.link-edit { display: grid; grid-template-columns: 140px 1fr auto; gap: 8px; margin-bottom: 8px; }
@media (max-width: 560px) { .link-edit { grid-template-columns: 1fr auto; } .link-edit input[name="url"] { grid-column: 1 / 2; grid-row: 2; } }
.form-error { color: var(--danger); margin: 0; min-height: 1em; font-size: 14px; }

.import-inputs { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 10px 0; }
.file-btn { position: relative; overflow: hidden; }
.file-btn input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
#importText { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.preview-table-wrap { overflow: auto; max-height: 40vh; margin-top: 12px; border: 1px solid var(--border); border-radius: 10px; }
.preview-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.preview-table th, .preview-table td { padding: 6px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.preview-table th { position: sticky; top: 0; background: var(--surface-2); }
.ok { color: #1e8a4c; }
.bad { color: var(--danger); }
.skip { color: var(--muted); }

.chip-list { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 10px; }
.chip-list li { display: inline-flex; align-items: center; gap: 4px; padding: 3px 4px 3px 12px; border-radius: 99px; background: var(--surface-2); }
.chip-list button { border: 0; background: transparent; cursor: pointer; width: 24px; height: 24px; border-radius: 50%; color: var(--muted); font-size: 16px; }
.chip-list button:hover { background: var(--border); color: var(--danger); }
.inline-form { display: flex; gap: 8px; }
.admin-list { list-style: none; padding: 0; margin: 0 0 10px; }
.admin-list li { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--border); }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--text); color: var(--bg); padding: 10px 18px; border-radius: 99px; font-weight: 500;
  transition: opacity .2s, transform .2s; z-index: 100; max-width: calc(100vw - 32px); text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }