@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600&family=Noto+Sans+TC:wght@400;500;700&display=swap');

:root {
  --bg: #101210;
  --panel: #171a16;
  --line: #2c3228;
  --text: #e8e6df;
  --muted: #9a9e93;
  --accent: #8fa36a;
  --danger: #c45c4a;
  --font-display: "Oswald", "Noto Sans TC", sans-serif;
  --font-body: "Noto Sans TC", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.admin-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  min-height: 100vh;
}

.admin-side {
  background: #0d0f0c;
  border-right: 1px solid var(--line);
  padding: 1.25rem 1rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}

.admin-side .brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: 1.5rem;
  padding: 0 .4rem;
}

.admin-side .brand img { width: 36px; height: 36px; object-fit: contain; }
.admin-side .brand strong {
  font-family: var(--font-display);
  letter-spacing: .08em;
  font-size: .95rem;
}

.admin-nav { display: grid; gap: .2rem; }
.admin-nav a {
  padding: .55rem .7rem;
  color: var(--muted);
  border: 1px solid transparent;
  font-size: .9rem;
}
.admin-nav a:hover,
.admin-nav a.is-active {
  color: var(--text);
  border-color: var(--line);
  background: var(--panel);
}

.admin-main { padding: 1.5rem; }
.admin-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.admin-top-left {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 0;
}
.admin-top h1 {
  font-family: var(--font-display);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: 1.5rem;
  margin: 0;
}

.admin-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: .45rem;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
}
.admin-menu-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
}
.admin-side-close {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  width: 2rem;
  height: 2rem;
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
}
.admin-nav-backdrop {
  display: none;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1.25rem;
}
.stat .num {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--accent);
  letter-spacing: .04em;
}
.stat .lbl { color: var(--muted); font-size: .85rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: .55rem 1rem;
  cursor: pointer;
  font-family: var(--font-display);
  letter-spacing: .06em;
  text-transform: uppercase;
  font-size: .78rem;
}
.btn-primary { background: var(--accent); color: #101208; border-color: var(--accent); }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-sm { padding: .35rem .65rem; font-size: .7rem; }

.field { margin-bottom: 1rem; }
.field label { display: block; color: var(--muted); font-size: .85rem; margin-bottom: .35rem; }
.field input, .field select, .field textarea {
  width: 100%;
  background: #101210;
  border: 1px solid var(--line);
  color: var(--text);
  padding: .65rem .8rem;
  font: inherit;
}
.field textarea { min-height: 120px; }
.field-inline {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: .55rem;
}
.field-inline input[type="checkbox"] {
  width: auto;
  max-width: none;
  margin: 0;
  padding: 0;
  flex: 0 0 auto;
  accent-color: var(--accent);
}
.field-inline label {
  display: inline;
  margin: 0;
  color: var(--text);
  width: auto;
  flex: 0 1 auto;
  cursor: pointer;
}

table.data { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.data th, table.data td {
  text-align: left;
  padding: .7rem .4rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data th { color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; }

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  align-items: center;
  margin-top: 1rem;
}
.pagination-meta { margin-left: .35rem; font-size: .85rem; }
.date-range-filter {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  align-items: center;
  padding: .75rem 0;
}
.date-range-filter input[type="date"] {
  background: var(--bg-elev, var(--panel));
  border: 1px solid var(--line);
  color: var(--text);
  padding: .35rem .5rem;
}
.date-range-label { font-size: .85rem; color: var(--muted); margin-right: .25rem; }
.date-range-sep { color: var(--muted); }
.date-range-presets { display: inline-flex; flex-wrap: wrap; gap: .35rem; margin-left: .25rem; }

.flash { padding: .75rem 1rem; margin-bottom: 1rem; border: 1px solid var(--line); }
.flash-success { border-color: #7aa86a; color: #7aa86a; }
.flash-error { border-color: var(--danger); color: var(--danger); }

.auth-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(143,163,106,.15), transparent 50%),
    var(--bg);
}
.auth-box {
  width: min(100%, 400px);
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 2rem;
}
.auth-box h1 {
  font-family: var(--font-display);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: 1.4rem;
  margin: 0 0 1.25rem;
  text-align: center;
}
.thumb-sm { width: 48px; height: 48px; object-fit: cover; border: 1px solid var(--line); }

.actions { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }

.gallery-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .25rem;
}
.gallery-list { display: grid; gap: .75rem; }
.gallery-row {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: .75rem;
  align-items: start;
  border: 1px solid var(--line);
  padding: .75rem;
  background: #101210;
}
.gallery-thumb {
  width: 96px;
  height: 96px;
  border: 1px solid var(--line);
  overflow: hidden;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: .75rem;
}
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumb-empty { background: #0d0f0c; }
.gallery-delete {
  display: flex;
  align-items: center;
  gap: .35rem;
  color: var(--danger);
  font-size: .85rem;
  white-space: nowrap;
}
.muted { color: var(--muted); }

/* Category tree — simplified */
.cat-help {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--muted);
  line-height: 1.7;
}
.cat-help strong { color: var(--text); }
.cat-simple-add {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}
.cat-simple-add input {
  flex: 1 1 16rem;
  background: #101210;
  border: 1px solid var(--line);
  color: var(--text);
  padding: .7rem .85rem;
  font: inherit;
}
.cat-tree { display: flex; flex-direction: column; gap: .65rem; }
.cat-card {
  border: 1px solid var(--line);
  background: #121512;
  padding: .85rem 1rem;
  margin-left: calc(var(--depth, 0) * 1.25rem);
  border-left: 3px solid var(--accent);
}
.cat-card-main {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1rem;
  align-items: center;
  justify-content: space-between;
}
.cat-card-name {
  font-weight: 700;
  font-size: 1.05rem;
}
.cat-card-path {
  color: var(--muted);
  font-size: .8rem;
  margin-top: .2rem;
}
.cat-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  align-items: flex-start;
}
.cat-pop { position: relative; }
.cat-pop > summary {
  list-style: none;
  cursor: pointer;
}
.cat-pop > summary::-webkit-details-marker { display: none; }
.cat-pop-form {
  position: absolute;
  right: 0;
  top: calc(100% + .35rem);
  z-index: 5;
  width: min(20rem, 85vw);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: .85rem;
  display: grid;
  gap: .45rem;
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.cat-pop-form label {
  color: var(--muted);
  font-size: .78rem;
  margin: 0;
}
.cat-pop-form input,
.cat-pop-form select {
  width: 100%;
  background: #101210;
  border: 1px solid var(--line);
  color: var(--text);
  padding: .55rem .65rem;
  font: inherit;
}
@media (max-width: 700px) {
  .cat-card { margin-left: calc(var(--depth, 0) * .65rem); }
  .cat-card-main { align-items: stretch; }
  .cat-pop-form { right: auto; left: 0; }
}

@media (max-width: 900px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-main { padding: 1rem; }
  .admin-top h1 { font-size: 1.2rem; }
  .admin-menu-toggle { display: inline-flex; }
  .admin-side-close { display: inline-flex; align-items: center; justify-content: center; }

  .admin-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 90;
    border: 0;
    padding: 0;
    margin: 0;
    background: rgba(0, 0, 0, .55);
    cursor: pointer;
  }
  .admin-nav-backdrop[hidden] { display: none !important; }

  .admin-side {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: min(280px, 86vw);
    z-index: 100;
    height: 100vh;
    transform: translateX(-105%);
    transition: transform .22s ease;
    box-shadow: none;
  }
  .admin-shell.nav-open .admin-side {
    transform: translateX(0);
    box-shadow: 8px 0 28px rgba(0, 0, 0, .45);
  }
  body.admin-nav-lock { overflow: hidden; }

  .stats { grid-template-columns: 1fr; }
  table.data { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
}