:root {
  --bg: #0f1419;
  --bg-elevated: #1a222d;
  --bg-card: #1e2733;
  --border: #2d3a4a;
  --text: #e8edf4;
  --text-muted: #8b9cb3;
  --accent: #3b9eff;
  --accent-hover: #5eb0ff;
  --success: #34c759;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
  --font: 'DM Sans', system-ui, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

code {
  font-family: ui-monospace, monospace;
  font-size: 0.85em;
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}

.hidden { display: none !important; }

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal {
  width: 100%;
  max-width: 420px;
  padding: 1.75rem;
}

.modal h2 { margin-bottom: 0.5rem; }

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

.sidebar {
  background: var(--bg-elevated);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 1.25rem 0;
}

.brand {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  padding: 0 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), #6366f1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.brand strong { display: block; font-size: 0.95rem; }
.brand span { font-size: 0.75rem; color: var(--text-muted); }

.nav { flex: 1; display: flex; flex-direction: column; gap: 0.25rem; padding: 0 0.75rem; }

.nav-item {
  background: none;
  border: none;
  color: var(--text-muted);
  text-align: left;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  transition: background 0.15s, color 0.15s;
}

.nav-item:hover { background: rgba(255, 255, 255, 0.05); color: var(--text); }
.nav-item.active { background: rgba(59, 158, 255, 0.15); color: var(--accent); font-weight: 600; }

.sidebar-footer {
  padding: 1rem 1.25rem 0;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.link, .link-btn {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-decoration: none;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.link:hover, .link-btn:hover { color: var(--accent); }

.main {
  padding: 1.5rem 2rem 2rem;
  overflow-y: auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.topbar h1 { font-size: 1.5rem; font-weight: 700; }
.subtitle { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.25rem; }

.topbar-actions { display: flex; align-items: center; gap: 0.75rem; }

.pill {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.pill-ok { background: rgba(52, 199, 89, 0.15); color: var(--success); }
.pill-warn { background: rgba(255, 159, 10, 0.15); color: var(--warning); }
.pill-neutral { background: rgba(139, 156, 179, 0.15); color: var(--text-muted); }

.btn {
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-elevated); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--text-muted); }
.btn-sm { padding: 0.35rem 0.65rem; font-size: 0.78rem; }
.btn-danger { background: rgba(255, 69, 58, 0.15); color: var(--danger); border: 1px solid transparent; }
.btn-danger:hover { background: rgba(255, 69, 58, 0.25); }

.file-btn { position: relative; overflow: hidden; cursor: pointer; }

.view { display: none; }
.view.active { display: block; }

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

.card h2 {
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 1.25rem 0;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.card-header h2 { padding: 0; }

.pad { padding: 0 1.25rem 1rem; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.stat-card .label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-card .value { font-size: 1.75rem; font-weight: 700; margin-top: 0.25rem; }

.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

th, td {
  text-align: left;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: rgba(255, 255, 255, 0.03); }

.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  text-transform: uppercase;
}

.badge-running { background: rgba(59, 158, 255, 0.2); color: var(--accent); }
.badge-draft { background: rgba(139, 156, 179, 0.2); color: var(--text-muted); }
.badge-completed { background: rgba(52, 199, 89, 0.2); color: var(--success); }
.badge-paused { background: rgba(255, 159, 10, 0.2); color: var(--warning); }
.badge-cancelled { background: rgba(255, 69, 58, 0.2); color: var(--danger); }

.badge-pending { background: rgba(139, 156, 179, 0.2); color: var(--text-muted); }
.badge-dialing, .badge-ringing, .badge-answered, .badge-playing { background: rgba(59, 158, 255, 0.2); color: var(--accent); }
.badge-completed { background: rgba(52, 199, 89, 0.15); color: var(--success); }
.badge-no_answer { background: rgba(255, 159, 10, 0.15); color: var(--warning); }
.badge-failed { background: rgba(255, 69, 58, 0.2); color: var(--danger); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.span-2 { grid-column: span 2; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0 1.25rem 1rem;
}

.field span { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }

.field input,
.field select,
.field textarea {
  font: inherit;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 0.6rem 0.75rem;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 158, 255, 0.15);
}

.field textarea { resize: vertical; min-height: 120px; }

.divider {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0 1.25rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.25rem 1.25rem;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
}

.hint, .muted { color: var(--text-muted); font-size: 0.8rem; }
.hint { padding: 0 1.25rem 1rem; }

.schedule-presets {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0 1.25rem 0.5rem;
}

.preset-btn { font-size: 0.78rem; }

.result {
  margin: 0 1.25rem 1.25rem;
  padding: 1rem;
  background: rgba(52, 199, 89, 0.1);
  border: 1px solid rgba(52, 199, 89, 0.3);
  border-radius: 8px;
  font-size: 0.85rem;
}

.result.error {
  background: rgba(255, 69, 58, 0.1);
  border-color: rgba(255, 69, 58, 0.3);
}

.split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 1rem;
  align-items: start;
}

.detail-header {
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.detail-header h2 { font-size: 1.1rem; margin-bottom: 0.5rem; }

.detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.detail-actions {
  display: flex;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}

.status-bars {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
}

.status-chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.65rem;
  font-size: 0.78rem;
}

.status-chip strong { color: var(--text); margin-right: 0.25rem; }

.empty-state {
  padding: 3rem 1.25rem;
  text-align: center;
  color: var(--text-muted);
}

.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 0.85rem 1.25rem;
  border-radius: 8px;
  box-shadow: var(--shadow);
  z-index: 2000;
  max-width: 360px;
  font-size: 0.875rem;
}

.toast.error { border-color: var(--danger); color: var(--danger); }

@media (max-width: 960px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { border-right: none; border-bottom: 1px solid var(--border); }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .form-grid, .split, .form-row { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
}