@import url('open-iconic/font/css/open-iconic-bootstrap.min.css');

/* ─── Design Tokens — Light Mode ────────────────────────────────────── */
:root {
  /* Brand */
  --primary:      #4f46e5;   /* indigo-600 */
  --primary-h:    #4338ca;   /* indigo-700 */
  --primary-l:    #e0e7ff;   /* indigo-100 */
  --primary-ll:   #f0f4ff;   /* near-indigo-50 */

  /* Sidebar (always dark) */
  --sidebar-bg:   #1e1b4b;   /* indigo-950 */
  --sidebar-t:    #c4b5fd;   /* violet-300 */
  --sidebar-hi:   rgba(165,147,255,.18);
  --sidebar-ht:   #ede9fe;   /* violet-100 */
  --sidebar-w:    220px;

  /* Page */
  --bg:           #f6f8fc;   /* clean neutral — NOT blue-tinted */
  --surface:      #ffffff;
  --border:       #dde1ea;
  --text:         #0f172a;   /* slate-900, near-black, max contrast */
  --muted:        #56637a;   /* slate-ish, 5.8:1 on #f6f8fc */

  /* Semantic */
  --success:      #059669;
  --success-bg:   #d1fae5;
  --warn:         #b45309;
  --warn-bg:      #fef3c7;
  --danger:       #dc2626;
  --danger-bg:    #fee2e2;

  /* Shape */
  --r:            12px;
  --r-sm:         7px;
  --r-lg:         20px;

  /* Shadow */
  --shadow:       0 1px 3px rgba(15,23,42,.07), 0 4px 14px rgba(15,23,42,.06);
  --shadow-sm:    0 1px 2px rgba(15,23,42,.06);
}

/* ─── Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC',
               'Microsoft JhengHei', 'Noto Sans TC', sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

h1 { font-size: 1.65rem; font-weight: 700; margin: 0 0 4px; text-wrap: balance; }
h2 { font-size: 1.1rem;  font-weight: 600; margin: 24px 0 12px; color: var(--text); }
h3 { font-size: .95rem;  font-weight: 600; margin: 0 0 14px; color: var(--text); }
h1:focus { outline: none; }
p { margin: 0 0 12px; }

code {
  font-family: 'Cascadia Code', 'Consolas', 'Fira Mono', monospace;
  font-size: .83em;
  background: var(--primary-ll); color: #3730a3;
  padding: 1px 5px; border-radius: 4px;
}

/* ─── Cards ─────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border-radius: var(--r);
  box-shadow: var(--shadow);
  padding: 24px 26px;
  border: 1px solid var(--border);
  margin-bottom: 22px;
}
.card-sm { padding: 15px 18px; }
.card-title {
  font-size: .74rem; font-weight: 700;
  letter-spacing: .07em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 6px;
}
.card-value { font-size: 2.1rem; font-weight: 700; color: var(--text); line-height: 1; }
.card-desc  { font-size: .85rem; color: var(--muted); margin-top: 5px; }

/* ─── Buttons ───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 18px;
  border-radius: var(--r-sm);
  font-size: .9rem; font-weight: 500;
  border: none; cursor: pointer;
  transition: background .15s, box-shadow .15s, transform .1s;
  white-space: nowrap; text-decoration: none; line-height: 1.4;
}
.btn:hover  { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-h); color: #fff;
  box-shadow: 0 4px 14px rgba(79,70,229,.35); }

.btn-secondary {
  background: var(--surface); color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-secondary:hover { background: var(--bg); color: var(--text); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; color: #fff; }

.btn-ghost { background: transparent; color: var(--muted); border: 1px solid transparent; }
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-sm { padding: 5px 11px; font-size: .82rem; }
.btn:disabled, .btn[disabled] {
  opacity: .46; cursor: not-allowed;
  transform: none !important; box-shadow: none !important;
}

/* ─── Forms ─────────────────────────────────────────────────────────── */
.form-row { margin-bottom: 18px; }
.form-label {
  display: block; font-size: .78rem; font-weight: 700;
  color: var(--muted); margin-bottom: 6px;
  letter-spacing: .04em; text-transform: uppercase;
}
.form-label small {
  font-size: .78rem; font-weight: 400;
  text-transform: none; letter-spacing: 0;
  color: var(--muted); opacity: .85;
}
.form-control {
  display: block; width: 100%;
  padding: 9px 13px;
  border: 1.5px solid var(--border);
  border-radius: var(--r-sm);
  font-size: .9rem; font-family: inherit;
  color: var(--text); background: var(--surface);
  transition: border-color .15s, box-shadow .15s;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.14);
}
.form-control-sm { padding: 6px 10px; font-size: .85rem; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-hint { font-size: .8rem; color: var(--muted); margin-top: 4px; }
.form-check { display: flex; align-items: center; gap: 8px; cursor: pointer; margin-bottom: 8px; }
.form-check input[type=checkbox] {
  width: 16px; height: 16px;
  border-radius: 4px; accent-color: var(--primary); cursor: pointer;
}
.form-check-label { font-size: .9rem; }
.form-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-top: 4px; }
input[type=number].form-control { max-width: 140px; }

/* ─── Tables ────────────────────────────────────────────────────────── */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--r);
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}
table.tbl { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.tbl thead th {
  background: var(--bg);
  color: var(--muted);
  font-weight: 700; font-size: .74rem;
  letter-spacing: .07em; text-transform: uppercase;
  padding: 12px 17px;
  border-bottom: 1.5px solid var(--border);
  text-align: left; white-space: nowrap;
}
table.tbl tbody td {
  padding: 13px 17px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.tbl tbody tr:last-child td { border-bottom: none; }
table.tbl tbody tr:hover { background: #f0f3fb; }
.text-mono { font-family: 'Cascadia Code','Consolas','Fira Mono',monospace; font-variant-numeric: tabular-nums; }

/* ─── Badges ────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: .73rem; font-weight: 700; letter-spacing: .03em;
  white-space: nowrap;
}
.badge-success { background: #dcfce7; color: #166534; }
.badge-danger  { background: #fee2e2; color: #991b1b; }
.badge-warn    { background: #fef3c7; color: #92400e; }
.badge-primary { background: var(--primary-l);  color: #3730a3; }
.badge-neutral { background: var(--bg); color: var(--muted); border: 1px solid var(--border); }

/* ─── Toggle Switch ─────────────────────────────────────────────────── */
.toggle { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.toggle input { display: none; }
.toggle-track {
  width: 36px; height: 20px;
  background: #cbd5e1; border-radius: 99px;
  position: relative; transition: background .2s; flex-shrink: 0;
}
.toggle-track::after {
  content: ''; position: absolute;
  left: 3px; top: 3px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.2);
  transition: transform .2s;
}
.toggle input:checked ~ .toggle-track { background: var(--success); }
.toggle input:checked ~ .toggle-track::after { transform: translateX(16px); }

/* ─── Alerts ────────────────────────────────────────────────────────── */
.alert {
  padding: 11px 15px; border-radius: var(--r-sm);
  font-size: .9rem; margin: 0 0 16px;
  display: flex; align-items: flex-start; gap: 8px;
}
.alert .oi { margin-top: 2px; flex-shrink: 0; }
.alert-success { background: #f0fdf4; color: #14532d; border-left: 3px solid #22c55e; }
.alert-danger  { background: #fff1f2; color: #7f1d1d; border-left: 3px solid var(--danger); }
.alert-warn    { background: #fffbeb; color: #78350f; border-left: 3px solid #f59e0b; }
.alert-info    { background: #eff6ff; color: #1e3a8a; border-left: 3px solid #3b82f6; }

/* ─── Page structure ────────────────────────────────────────────────── */
.page-header { margin-bottom: 26px; }
.subtitle { color: var(--muted); font-size: .9rem; margin: 3px 0 0; }
.page-header-row {
  display: flex; justify-content: space-between;
  align-items: flex-start; gap: 12px; flex-wrap: wrap;
}
.breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: .82rem; color: var(--muted); margin-bottom: 6px;
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary); text-decoration: none; }
.breadcrumb .oi { font-size: .6rem; opacity: .6; }

/* ─── Section divider in cards ──────────────────────────────────────── */
.section-title {
  display: flex; align-items: center; gap: 8px;
  font-size: .95rem; font-weight: 600;
  margin: 0 0 16px; color: var(--text);
}
.section-title .oi { color: var(--primary); font-size: .88rem; }
.card-divider { border: none; border-top: 1px solid var(--border); margin: 22px 0; }

/* ─── Helpers ───────────────────────────────────────────────────────── */
.text-muted { color: var(--muted); }
.loading { color: var(--muted); font-size: .9rem; display: flex; align-items: center; gap: 6px; }

/* ─── Blazor infrastructure ─────────────────────────────────────────── */
.valid.modified:not([type=checkbox]) { outline: 1px solid var(--success); }
.invalid { outline: 1px solid var(--danger); }
.validation-message { color: var(--danger); font-size: .82rem; margin-top: 2px; }

#blazor-error-ui {
  background: var(--warn-bg); color: var(--warn);
  bottom: 0; left: 0; right: 0;
  padding: .6rem 1.25rem;
  position: fixed; z-index: 9999;
  display: none;
  border-top: 1px solid var(--border);
  font-size: .9rem;
}
#blazor-error-ui .dismiss { cursor: pointer; float: right; }
.blazor-error-boundary {
  background: var(--danger-bg); color: var(--danger);
  padding: 1rem; border-radius: var(--r-sm);
  border: 1px solid var(--danger);
}
.blazor-error-boundary::after { content: "An error has occurred." }

/* ═══════════════════════════════════════════════════════════════════════
   DARK THEME
   Applied when: data-theme="dark"
   OR: data-theme="system" AND OS prefers dark
   ═══════════════════════════════════════════════════════════════════════ */

:root[data-theme="dark"] {
  /* Page backgrounds */
  --bg:        #12121a;   /* near-black, neutral-dark */
  --surface:   #1e1e2c;   /* card surface — clearly lighter than bg */
  --border:    #30304a;   /* visible but not glaring */

  /* Text — HIGH CONTRAST */
  --text:      #f0f0fa;   /* near-white, very readable */
  --muted:     #a8a8c8;   /* MUCH brighter than before — was #8a88aa */

  /* Primary adjustments */
  --primary-l: #2c2860;
  --primary-ll: #1e1a48;

  /* Sidebar */
  --sidebar-bg: #0c0c14;

  /* Shadows */
  --shadow:    0 2px 6px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.3);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.35);
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    --bg:        #12121a;
    --surface:   #1e1e2c;
    --border:    #30304a;
    --text:      #f0f0fa;
    --muted:     #a8a8c8;
    --primary-l: #2c2860;
    --primary-ll: #1e1a48;
    --sidebar-bg: #0c0c14;
    --shadow:    0 2px 6px rgba(0,0,0,.4), 0 6px 20px rgba(0,0,0,.3);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.35);
  }
}

/* ── Dark: code ──────────────────────────────────────────────────────── */
:root[data-theme="dark"] code { background: #252550; color: #a5a3ff; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] code { background: #252550; color: #a5a3ff; }
}

/* ── Dark: alerts (bright, clearly readable) ─────────────────────────── */
:root[data-theme="dark"] .alert-success { background: rgba(21,128,61,.18);  color: #4ade80; border-color: rgba(74,222,128,.4); }
:root[data-theme="dark"] .alert-danger  { background: rgba(185,28,28,.18);  color: #fca5a5; border-color: rgba(252,165,165,.4); }
:root[data-theme="dark"] .alert-warn    { background: rgba(180,83,9,.18);   color: #fcd34d; border-color: rgba(252,211,77,.4); }
:root[data-theme="dark"] .alert-info    { background: rgba(59,130,246,.18); color: #93c5fd; border-color: rgba(147,197,253,.4); }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .alert-success { background: rgba(21,128,61,.18);  color: #4ade80; border-color: rgba(74,222,128,.4); }
  :root[data-theme="system"] .alert-danger  { background: rgba(185,28,28,.18);  color: #fca5a5; border-color: rgba(252,165,165,.4); }
  :root[data-theme="system"] .alert-warn    { background: rgba(180,83,9,.18);   color: #fcd34d; border-color: rgba(252,211,77,.4); }
  :root[data-theme="system"] .alert-info    { background: rgba(59,130,246,.18); color: #93c5fd; border-color: rgba(147,197,253,.4); }
}

/* ── Dark: badges ────────────────────────────────────────────────────── */
:root[data-theme="dark"] .badge-success { background: rgba(21,128,61,.22);  color: #4ade80; }
:root[data-theme="dark"] .badge-danger  { background: rgba(185,28,28,.22);  color: #fca5a5; }
:root[data-theme="dark"] .badge-warn    { background: rgba(180,83,9,.22);   color: #fcd34d; }
:root[data-theme="dark"] .badge-primary { background: rgba(79,70,229,.25);  color: #a5b4fc; }
:root[data-theme="dark"] .badge-neutral { background: rgba(255,255,255,.08); color: var(--muted); border-color: var(--border); }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .badge-success { background: rgba(21,128,61,.22);  color: #4ade80; }
  :root[data-theme="system"] .badge-danger  { background: rgba(185,28,28,.22);  color: #fca5a5; }
  :root[data-theme="system"] .badge-warn    { background: rgba(180,83,9,.22);   color: #fcd34d; }
  :root[data-theme="system"] .badge-primary { background: rgba(79,70,229,.25);  color: #a5b4fc; }
  :root[data-theme="system"] .badge-neutral { background: rgba(255,255,255,.08); color: var(--muted); border-color: var(--border); }
}

/* ── Dark: table ─────────────────────────────────────────────────────── */
:root[data-theme="dark"] table.tbl thead th  { background: #16162a; }
:root[data-theme="dark"] table.tbl tbody tr:hover { background: #252538; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] table.tbl thead th  { background: #16162a; }
  :root[data-theme="system"] table.tbl tbody tr:hover { background: #252538; }
}

/* ── Dark: toggle track ──────────────────────────────────────────────── */
:root[data-theme="dark"] .toggle-track { background: #3c3c5c; }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .toggle-track { background: #3c3c5c; }
}

/* ── Dark: chat bubble ───────────────────────────────────────────────── */
:root[data-theme="dark"] .bubble-ai { background: #16162a; color: var(--text); }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .bubble-ai { background: #16162a; color: var(--text); }
}

/* ── Dark: buttons ───────────────────────────────────────────────────── */
:root[data-theme="dark"] .btn-secondary {
  background: var(--surface); border-color: var(--border); color: var(--text);
}
:root[data-theme="dark"] .btn-secondary:hover { background: #28283e; }
:root[data-theme="dark"] .btn-ghost:hover { background: rgba(255,255,255,.08); color: var(--text); }
@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] .btn-secondary {
    background: var(--surface); border-color: var(--border); color: var(--text);
  }
  :root[data-theme="system"] .btn-secondary:hover { background: #28283e; }
  :root[data-theme="system"] .btn-ghost:hover { background: rgba(255,255,255,.08); color: var(--text); }
}