:root {
  color-scheme: dark;
  --bg-a: #0b0620;
  --bg-b: #1a0b3d;
  --bg-c: #05081f;
  --glow-1: rgba(124, 58, 237, 0.55);
  --glow-2: rgba(236, 72, 153, 0.4);
  --glow-3: rgba(34, 211, 238, 0.28);
  --card: rgba(255, 255, 255, 0.055);
  --surface: rgba(255, 255, 255, 0.05);
  --surface-hover: rgba(255, 255, 255, 0.12);
  --sidebar-bg: rgba(18, 12, 40, 0.55);
  --border: rgba(255, 255, 255, 0.14);
  --text: #f1eefc;
  --muted: #a9a3c9;
  --primary: #8b5cf6;
  --primary-2: #ec4899;
  --ok: #4ade80;
  --err: #fb7185;
  --fb-card-bg: #ffffff;
  --fb-card-text: #1c1e21;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg-a: #eef2ff;
  --bg-b: #fdf2f8;
  --bg-c: #ecfeff;
  --glow-1: rgba(139, 92, 246, 0.28);
  --glow-2: rgba(236, 72, 153, 0.22);
  --glow-3: rgba(34, 211, 238, 0.25);
  --card: rgba(255, 255, 255, 0.65);
  --surface: rgba(255, 255, 255, 0.55);
  --surface-hover: rgba(139, 92, 246, 0.1);
  --sidebar-bg: rgba(255, 255, 255, 0.6);
  --border: rgba(76, 29, 149, 0.14);
  --text: #241b40;
  --muted: #6b6285;
  --primary: #7c3aed;
  --primary-2: #db2777;
  --ok: #16a34a;
  --err: #e11d48;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background:
    radial-gradient(1100px 700px at 8% -10%, var(--glow-1), transparent 60%),
    radial-gradient(900px 600px at 105% 10%, var(--glow-2), transparent 55%),
    radial-gradient(800px 800px at 50% 115%, var(--glow-3), transparent 60%),
    linear-gradient(160deg, var(--bg-a), var(--bg-b) 45%, var(--bg-c));
  background-attachment: fixed;
  min-height: 100vh;
  transition: background 0.2s ease, color 0.2s ease;
}

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: 250px;
  flex-shrink: 0;
  background: var(--sidebar-bg);
  backdrop-filter: blur(22px) saturate(140%);
  -webkit-backdrop-filter: blur(22px) saturate(140%);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.brand {
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #a855f7, #ec4899 60%, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: 0.01em;
}
.side-nav { display: flex; flex-direction: column; gap: 4px; margin-bottom: 24px; }
.side-nav .tab-btn {
  text-align: left;
  border-radius: 10px;
  border: 1px solid transparent;
  padding: 10px 12px;
  background: transparent;
  color: var(--muted);
  transition: all 0.15s ease;
}
.side-nav .tab-btn:hover { background: var(--surface-hover); color: var(--text); }
.side-nav .tab-btn.active {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.35), rgba(236, 72, 153, 0.25));
  border-color: rgba(139, 92, 246, 0.4);
  color: var(--text);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}
.theme-toggle {
  margin-top: auto;
  width: 100%;
  justify-content: center;
  background: var(--surface);
}

.main-content { flex: 1; min-width: 0; max-width: 780px; margin: 0 auto; padding: 28px 18px 70px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

header h1 { font-size: 22px; margin-bottom: 4px; }
.sub { color: var(--muted); font-size: 14px; margin-top: 0; }

.card {
  background: var(--card);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 18px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.16);
}
.card h2 { font-size: 16px; margin-top: 0; color: var(--text); }

.row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.row input { flex: 1; min-width: 120px; }

input[type=text], input[type=password], input[type=number], textarea, select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px;
  margin-bottom: 10px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input::placeholder, textarea::placeholder { color: var(--muted); opacity: 0.8; }
input[type=text]:focus, input[type=password]:focus, input[type=number]:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.28);
}
.row input[type=text], .row input[type=password] { margin-bottom: 0; }

button, input[type=file]::file-selector-button {
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 14px;
  transition: transform 0.1s ease, background 0.15s ease, box-shadow 0.15s ease;
}
input[type=file] { color: var(--muted); font-size: 13px; }
input[type=file]::file-selector-button { margin-right: 10px; }
button:hover, input[type=file]::file-selector-button:hover { background: var(--surface-hover); }
button:active { transform: scale(0.98); }
button.primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  border: none;
  color: #fff;
  font-weight: 600;
  width: 100%;
  padding: 13px;
  box-shadow: 0 6px 24px rgba(139, 92, 246, 0.4);
}
button.primary:hover { box-shadow: 0 8px 30px rgba(236, 72, 153, 0.45); }
button.primary:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }

.hint { font-size: 12.5px; color: var(--muted); line-height: 1.55; }
.hint code { background: var(--surface-hover); padding: 1px 5px; border-radius: 5px; }

table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.token-mask { font-family: "SFMono-Regular", Consolas, monospace; color: var(--muted); }

.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 5px; }
.checkbox-cell { width: 24px; }

#results .result-item {
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 8px;
  font-size: 13.5px;
  background: var(--surface);
  border: 1px solid var(--border);
}
#results .result-item.ok { border-left: 3px solid var(--ok); }
#results .result-item.err { border-left: 3px solid var(--err); }
.status-ok { color: var(--ok); font-weight: 600; }
.status-err { color: var(--err); font-weight: 600; }
.empty { color: var(--muted); font-size: 13px; }
a { color: var(--primary); }
.icon-btn { background: transparent; border: none; cursor: pointer; font-size: 14px; padding: 2px 6px; color: var(--muted); }
.icon-btn:hover { background: transparent; color: var(--err); }

.req { color: var(--muted); font-weight: 400; font-size: 12px; }
.btn-row { display: flex; gap: 10px; }
.btn-row button { flex: 1; }
.account-info { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.account-info img, .avatar-sm { width: 32px; height: 32px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border); }
.avatar-sm { width: 24px; height: 24px; }
details summary { cursor: pointer; font-size: 13.5px; color: var(--primary); }
.troubleshoot { margin-top: 10px; font-size: 13px; }
.troubleshoot summary { cursor: pointer; color: var(--primary); }
.troubleshoot ul { padding-left: 18px; margin: 8px 0 0; color: var(--muted); }

.account-picker { display: flex; flex-direction: column; gap: 8px; }
.account-option {
  display: flex; align-items: center; gap: 10px; padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 12px; cursor: pointer; font-size: 14px;
  background: var(--surface);
  transition: all 0.15s ease;
}
.account-option:hover { background: var(--surface-hover); }
.account-option.selected {
  border-color: var(--primary);
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.22), rgba(236, 72, 153, 0.14));
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.18);
}
.account-option input { margin: 0; }

/* Category filter chips */
.category-chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.category-chip {
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
}
.category-chip:hover { background: var(--surface-hover); }
.category-chip.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(139, 92, 246, 0.35);
}
.category-chip .cat-count { opacity: 0.75; font-size: 11.5px; }

.stat-row { display: flex; gap: 14px; flex-wrap: wrap; }
.stat-box {
  flex: 1; min-width: 130px; text-align: center; padding: 18px 14px;
  border: 1px solid var(--border); border-radius: 14px;
  background: var(--surface);
}
.stat-num { font-size: 26px; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--primary-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-num.status-ok, .stat-num.status-err { -webkit-text-fill-color: initial; background: none; }
.stat-label { font-size: 12px; color: var(--muted); margin-top: 4px; }

/* Facebook-style preview card (always light, mimics real FB UI) */
.fb-preview-card {
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 14px;
  padding: 14px;
  background: var(--fb-card-bg);
  color: var(--fb-card-text);
  font-family: Helvetica, Arial, sans-serif;
}
.fb-preview-header { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.fb-preview-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 16px; flex-shrink: 0;
}
.fb-preview-page { font-weight: 600; font-size: 14.5px; color: #050505; }
.fb-preview-meta { font-size: 12px; color: #65676b; }
.fb-preview-msg { white-space: pre-wrap; font-size: 14.5px; margin-bottom: 10px; color: #050505; }
.fb-preview-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); gap: 6px; }
.fb-preview-thumb { width: 100%; height: 90px; object-fit: cover; border-radius: 8px; }
.fb-preview-media { width: 100%; max-height: 320px; border-radius: 8px; background: #000; }
.fb-preview-link { font-size: 13px; color: #1877f2; word-break: break-all; }
.fb-preview-actions {
  display: flex; justify-content: space-around; margin-top: 12px; padding-top: 10px;
  border-top: 1px solid #eee; font-size: 13.5px; color: #65676b; font-weight: 600;
}

@media (max-width: 720px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; }
}

#authOverlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  background:
    radial-gradient(1100px 700px at 8% -10%, var(--glow-1), transparent 60%),
    radial-gradient(900px 600px at 105% 10%, var(--glow-2), transparent 55%),
    radial-gradient(800px 800px at 50% 115%, var(--glow-3), transparent 60%),
    linear-gradient(160deg, var(--bg-a), var(--bg-b) 45%, var(--bg-c));
}
.auth-box {
  width: 320px;
  max-width: 90vw;
  padding: 28px 24px;
  border-radius: 18px;
  background: var(--card);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  border: 1px solid var(--border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  text-align: center;
}
.auth-title {
  font-weight: 700;
  font-size: 18px;
  margin-bottom: 4px;
  background: linear-gradient(135deg, #a855f7, #ec4899 60%, #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.auth-box input { margin-bottom: 12px; text-align: center; }
.auth-box button { width: 100%; }
.auth-error { color: var(--err); min-height: 16px; }