:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-elevated: #121a2f;
  --bg-panel: #151f38;
  --border: rgba(255, 255, 255, 0.08);
  --text: #e8edf8;
  --muted: #93a0bd;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  font-family: "DM Sans", system-ui, sans-serif;
  background: radial-gradient(circle at top left, #172554 0%, var(--bg) 40%), var(--bg);
  color: var(--text);
}

button, input, select, textarea {
  font: inherit;
}

a {
  color: #93c5fd;
}

.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: rgba(10, 14, 28, 0.9);
  border-right: 1px solid var(--border);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2563eb, #22c55e);
  font-weight: 700;
}

.brand strong {
  display: block;
}

.brand span {
  color: var(--muted);
  font-size: 0.85rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.nav-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 12px 14px;
  border-radius: 12px;
  cursor: pointer;
  transition: 0.2s ease;
}

.nav-btn:hover,
.nav-btn.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--text);
}

.sidebar-footer {
  margin-top: auto;
}

.instance-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: var(--bg-panel);
  font-size: 0.85rem;
  color: var(--muted);
}

.instance-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--warning);
}

.instance-pill.online .dot {
  background: var(--success);
}

.main {
  min-width: 0;
  padding: 28px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.topbar h1 {
  margin: 0 0 6px;
  font-size: 1.8rem;
}

.topbar p {
  margin: 0;
  color: var(--muted);
}

.topbar-actions {
  flex-wrap: wrap;
  display: flex;
  gap: 10px;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.stat-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.stat-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-card strong {
  display: block;
  margin-top: 8px;
  font-size: 2rem;
}

.panel-grid,
.split {
  display: grid;
  gap: 16px;
}

.panel-grid {
  grid-template-columns: 1fr 1fr;
}

.split {
  grid-template-columns: 1.1fr 0.9fr;
}

.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.panel-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.panel-body {
  padding: 18px 20px;
}

.btn {
  border: 0;
  border-radius: 12px;
  padding: 10px 16px;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-hover);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fecaca;
}

.btn-lg {
  width: 100%;
  padding: 14px;
  font-size: 1rem;
}

.toolbar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
  align-items: center;
}

.toolbar-hint {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 0.85rem;
}

.toolbar input,
.toolbar select,
.form input,
.form select,
.form textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  padding: 10px 12px;
}

.toolbar input[type="search"] {
  flex: 1;
  min-width: 220px;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-panel);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 600;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.tag {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  margin-right: 4px;
  background: rgba(59, 130, 246, 0.15);
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
}

.badge.pending { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
.badge.running { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }
.badge.completed { background: rgba(34, 197, 94, 0.15); color: #86efac; }
.badge.failed { background: rgba(239, 68, 68, 0.15); color: #fca5a5; }
.badge.partial { background: rgba(168, 85, 247, 0.15); color: #d8b4fe; }
.badge.admin { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }
.badge.super { background: rgba(234, 179, 8, 0.15); color: #fde047; }

.form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.list-item {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.list-item:last-child {
  border-bottom: 0;
}

.list-item strong {
  display: block;
}

.list-item small {
  color: var(--muted);
}

.selected-groups {
  min-height: 80px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

.checkbox {
  flex-direction: row !important;
  align-items: center;
  gap: 8px !important;
}

.checkbox input {
  width: auto;
}

.hidden {
  display: none !important;
}

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}

.code-block {
  display: block;
  padding: 12px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.25);
  word-break: break-all;
}

dialog {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: var(--bg-elevated);
  color: var(--text);
  width: min(520px, 92vw);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.55);
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 8px;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  padding: 14px 18px;
  border-radius: 12px;
  background: #111827;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(12px);
  transition: 0.25s ease;
  pointer-events: none;
  max-width: 360px;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success { border-color: rgba(34, 197, 94, 0.4); }
.toast.error { border-color: rgba(239, 68, 68, 0.4); }

.empty {
  color: var(--muted);
  padding: 20px 0;
}

@media (max-width: 1100px) {
  .app {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .stats-grid,
  .panel-grid,
  .split,
  .form-grid {
    grid-template-columns: 1fr;
  }
}
[hidden] { display: none !important; }
.login-screen { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(100%, 430px); padding: 32px; display: grid; gap: 20px; }
.login-card h1 { font-size: 26px; }
#loginError { color: #dc2626; margin: 0; }

select, select option, select optgroup { background-color: #1e293b; color: #e8edf8; color-scheme: dark; }
select option:checked { background-color: #2563eb; color: #fff; }
input:autofill { -webkit-text-fill-color: #e8edf8; box-shadow: 0 0 0 1000px #1e293b inset; }
.panel, .split > * { min-width: 0; }
.btn:disabled { opacity: .55; cursor: wait; }
.message-preview { background: #0b141a; padding: 20px; border-radius: 12px; }
.message-bubble { background: #005c4b; color: #fff; border-radius: 12px 12px 0 12px; padding: 6px; max-width: 360px; margin-left: auto; overflow-wrap: anywhere; }
.message-bubble img, .message-bubble video { display: block; width: 100%; max-height: 320px; object-fit: contain; border-radius: 8px; }
.message-caption { white-space: pre-wrap; padding: 8px; margin: 0; }
.message-file { padding: 16px; background: #064b40; border-radius: 8px; }
.preview-time { display: block; text-align: right; font-size: 11px; color: #b8d8d0; padding: 0 8px 5px; }
.choice-list { display: grid; gap: 10px; max-height: 260px; overflow-y: auto; padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
.weekday-list { display: flex; flex-wrap: wrap; gap: 12px; }
fieldset { border: 1px solid var(--border); border-radius: 12px; padding: 14px; min-width: 0; }
legend { color: var(--muted); padding: 0 6px; }
.queue-order { color: var(--muted); overflow-wrap: anywhere; padding-left: 24px; }
.queue-card { padding: 16px 0; border-bottom: 1px solid var(--border); }
.queue-card h3 { margin: 0 0 8px; }
.preview-action { border-top: 1px solid #428779; color: #79d5f2; text-align: center; padding: 12px; overflow-wrap: anywhere; }
#messageButtonFields label { margin-bottom: 12px; }
#messagesList .form-actions { align-content: start; flex-shrink: 0; }
@media (max-width: 600px) { #messagesList .list-item { flex-wrap: wrap; } }
.ai-copy-box { border: 1px solid var(--border); border-radius: 12px; padding: 14px; background: var(--bg-elevated); }
.ai-copy-box summary { cursor: pointer; color: #bfdbfe; font-weight: 600; }
.ai-copy-box label, .ai-copy-box button { margin-top: 12px; }
@media (max-width: 600px) { .topbar { flex-direction: column; } .main { padding: 16px; } }