/* ══════════════════════════════════════════════════════════════
   Tanka Notes – Admin Panel Styles
   ══════════════════════════════════════════════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --teal:       #00ADB5;
  --teal-dark:  #008a93;
  --teal-deep:  #1e5a6b;
  --lime:       #CDDC39;
  --ink:        #1F2937;
  --ink-soft:   #374151;
  --muted:      #6B7280;
  --surface:    #F9FAFB;
  --border:     #E5E7EB;
  --white:      #ffffff;
  --danger:     #dc3545;
  --success:    #198754;
  --warning:    #fd7e14;
  --sidebar-w:  230px;
  --radius:     8px;
  --shadow:     0 2px 8px rgba(0,0,0,.10);
  --shadow-md:  0 4px 18px rgba(0,0,0,.13);
}

html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', sans-serif;
  font-size: .9rem;
  color: var(--ink);
  background: var(--surface);
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Login page ───────────────────────────────────────────────── */
.admin-login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, var(--teal-deep) 0%, var(--teal) 100%);
}

.login-card {
  background: var(--white);
  border-radius: 14px;
  padding: 2.5rem 2.25rem;
  width: min(420px, 90vw);
  box-shadow: var(--shadow-md);
}

.login-logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 1.5rem;
}
.login-logo i { font-size: 1.5rem; }

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: .3rem;
}
.login-sub  { color: var(--muted); font-size: .88rem; margin-bottom: 1.75rem; }
.login-back { text-align: center; margin-top: 1.5rem; font-size: .85rem; color: var(--muted); }

/* ── Layout ───────────────────────────────────────────────────── */
.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────────── */
.admin-sidebar {
  width: var(--sidebar-w);
  background: linear-gradient(180deg, var(--teal-deep) 0%, #0e3a48 100%);
  color: var(--white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  padding: 0;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: .65rem;
  font-size: 1.1rem;
  font-weight: 700;
  padding: 1.4rem 1.25rem 1.2rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
  color: var(--white);
}
.admin-brand i { font-size: 1.25rem; color: var(--lime); }

.admin-nav {
  flex: 1;
  padding: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.admin-nav-btn {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: 100%;
  padding: .75rem 1.25rem;
  background: none;
  border: none;
  color: rgba(255,255,255,.72);
  font-size: .9rem;
  cursor: pointer;
  text-align: left;
  transition: background .15s, color .15s;
  border-radius: 0;
}
.admin-nav-btn i { width: 1.1rem; text-align: center; }
.admin-nav-btn:hover { background: rgba(255,255,255,.1); color: var(--white); }
.admin-nav-btn.active { background: rgba(255,255,255,.15); color: var(--white); border-left: 3px solid var(--lime); }

.admin-sidebar-footer {
  padding: 1rem;
  border-top: 1px solid rgba(255,255,255,.1);
  display: flex;
  flex-direction: column;
  gap: .4rem;
}
.admin-sidebar-link {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: .55rem .75rem;
  border-radius: var(--radius);
  color: rgba(255,255,255,.65);
  font-size: .85rem;
  transition: background .15s, color .15s;
}
.admin-sidebar-link:hover { background: rgba(255,255,255,.1); color: var(--white); text-decoration: none; }
.admin-sidebar-link--logout { color: rgba(255,150,150,.8); }
.admin-sidebar-link--logout:hover { background: rgba(220,53,69,.2); color: #ff9999; }

/* ── Main area ────────────────────────────────────────────────── */
.admin-main {
  margin-left: var(--sidebar-w);
  flex: 1;
  padding: 2rem;
  min-height: 100vh;
}

/* ── Tabs ─────────────────────────────────────────────────────── */
.admin-tab { display: none; }
.admin-tab.active { display: block; }

.admin-tab-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}
.admin-tab-header h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: .5rem;
}
.admin-tab-header h2 i { color: var(--teal); }

/* ── Buttons ──────────────────────────────────────────────────── */
.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem 1.1rem;
  border-radius: var(--radius);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .15s;
}
.admin-btn--primary  { background: var(--teal);    color: var(--white); }
.admin-btn--primary:hover { background: var(--teal-dark); }
.admin-btn--danger   { background: var(--danger);  color: var(--white); }
.admin-btn--danger:hover  { background: #b02a37; }
.admin-btn--success  { background: var(--success); color: var(--white); }
.admin-btn--success:hover { background: #146c43; }
.admin-btn--warning  { background: var(--warning); color: var(--white); }
.admin-btn--warning:hover { background: #d96b0e; }
.admin-btn--ghost    { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.admin-btn--ghost:hover   { background: var(--surface); color: var(--ink); }
.admin-btn--full     { width: 100%; justify-content: center; padding: .75rem 1.1rem; }
.admin-btn--sm       { padding: .35rem .75rem; font-size: .78rem; }
.admin-btn:disabled  { opacity: .6; cursor: not-allowed; }

/* ── Cards ────────────────────────────────────────────────────── */
.admin-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}
.admin-card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 1.25rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--border);
}

/* ── Table ────────────────────────────────────────────────────── */
.admin-table-wrap {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .86rem;
}
.admin-table th {
  background: var(--surface);
  padding: .75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.admin-table td {
  padding: .85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--surface); }

.admin-table .actions { display: flex; gap: .5rem; flex-wrap: wrap; }

/* ── Badges ───────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: .2rem .65rem;
  border-radius: 100px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.badge--active   { background: rgba(25,135,84,.12);  color: var(--success); }
.badge--inactive { background: rgba(108,117,125,.12); color: var(--muted);  }
.badge--pdf      { background: rgba(220,53,69,.12);  color: var(--danger);  }
.badge--docx, .badge--doc  { background: rgba(13,110,253,.12); color: #0d6efd; }
.badge--pptx, .badge--ppt  { background: rgba(253,126,20,.12); color: var(--warning); }
.badge--mp3, .badge--audio { background: rgba(25,135,84,.12);  color: var(--success); }
.badge--mp4, .badge--video { background: rgba(111,66,193,.12);  color: #6f42c1; }
.badge--zip      { background: rgba(108,117,125,.12); color: var(--muted); }
.badge--image    { background: rgba(0,173,181,.12);   color: var(--teal);  }
.badge--other    { background: rgba(108,117,125,.12); color: var(--muted); }

/* ── Forms ────────────────────────────────────────────────────── */
.admin-form-group {
  margin-bottom: 1rem;
}
.admin-form-group label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: .35rem;
}
.admin-form-group input,
.admin-form-group select,
.admin-form-group textarea {
  width: 100%;
  padding: .6rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: .875rem;
  color: var(--ink);
  background: var(--white);
  transition: border-color .15s;
}
.admin-form-group input:focus,
.admin-form-group select:focus,
.admin-form-group textarea:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(0,173,181,.1);
}
.admin-form-group textarea { resize: vertical; }
.admin-form-group input[type="file"] { padding: .45rem .75rem; }

.admin-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 560px) { .admin-form-row { grid-template-columns: 1fr; } }

/* ── Modals ───────────────────────────────────────────────────── */
.admin-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.admin-modal {
  background: var(--white);
  border-radius: 12px;
  width: min(580px, 100%);
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}
.admin-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.admin-modal-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.admin-modal-header h3 i { color: var(--teal); }
.admin-modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--muted);
  line-height: 1;
  padding: 0 .25rem;
}
.admin-modal-close:hover { color: var(--ink); }

.admin-modal form { padding: 1.25rem 1.5rem; }
.admin-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: .75rem;
  padding-top: .75rem;
  border-top: 1px solid var(--border);
  margin-top: .5rem;
}

/* ── Alerts ───────────────────────────────────────────────────── */
.admin-alert {
  padding: .75rem 1rem;
  border-radius: var(--radius);
  font-size: .85rem;
  margin-bottom: 1rem;
}
.admin-alert--error   { background: rgba(220,53,69,.1);  color: var(--danger);  border: 1px solid rgba(220,53,69,.2); }
.admin-alert--success { background: rgba(25,135,84,.1);  color: var(--success); border: 1px solid rgba(25,135,84,.2); }

/* ── Toast ────────────────────────────────────────────────────── */
.admin-toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--ink);
  color: var(--white);
  padding: .75rem 1.25rem;
  border-radius: var(--radius);
  font-size: .875rem;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .2s, transform .2s;
  pointer-events: none;
  z-index: 1000;
  max-width: 320px;
}
.admin-toast.show { opacity: 1; transform: translateY(0); }
.admin-toast.success { background: var(--success); }
.admin-toast.error   { background: var(--danger);  }

/* ── Progress bar ─────────────────────────────────────────────── */
.admin-progress {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 1rem;
}
.admin-progress-bar {
  height: 100%;
  background: var(--teal);
  width: 0%;
  transition: width .2s;
}

/* ── Star rating input ────────────────────────────────────────── */
.star-rating-input {
  display: flex;
  gap: .3rem;
  margin-top: .25rem;
}
.star-rating-input .star {
  background: none;
  border: none;
  font-size: 1.3rem;
  cursor: pointer;
  color: var(--border);
  transition: color .1s;
  padding: 0;
}
.star-rating-input .star.active { color: #f59e0b; }

/* ── Misc helpers ─────────────────────────────────────────────── */
.admin-hint       { color: var(--muted); font-size: .82rem; margin-bottom: 1rem; }
.admin-hint-inline { color: var(--muted); font-size: .78rem; font-weight: 400; }
.admin-loading    { padding: 2rem; text-align: center; color: var(--muted); }
.admin-empty      { padding: 2rem; text-align: center; color: var(--muted); font-style: italic; }
.required         { color: var(--danger); }

.poem-preview {
  font-style: italic;
  color: var(--ink-soft);
  font-size: .88rem;
  line-height: 1.9;
  display: block;
}

.file-size { color: var(--muted); font-size: .8rem; }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
  .admin-sidebar { width: 60px; }
  .admin-sidebar .admin-brand span,
  .admin-sidebar .admin-nav-btn span,
  .admin-sidebar .admin-sidebar-link span { display: none; }
  .admin-main { margin-left: 60px; padding: 1.25rem; }
  .admin-nav-btn { justify-content: center; padding: .75rem; }
  .admin-sidebar-link { justify-content: center; }
  .admin-brand { justify-content: center; padding: 1rem .5rem; }
}