:root {
  --bg: #f8fafc;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --primary: #2563eb;
  --accent: #0ea5e9;
  --warning: #f59e0b;
  --danger: #ef4444;
  --success: #16a34a;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.08), 0 14px 30px rgba(15, 23, 42, 0.12);
  --radius: 14px;
  --radius-sm: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, rgba(14, 165, 233, 0.12), transparent 55%), var(--bg);
}

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

/* Sidebar */
.sidebar {
  width: 240px;
  background: linear-gradient(180deg, #0f172a, #0b1120);
  color: #e5e7eb;
  padding: 26px 18px;
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  border-right: 1px solid rgba(148, 163, 184, 0.2);
}

.sidebar-logo { display: flex; align-items: center; gap: 10px; font-weight: 600; margin-bottom: 28px; }
.logo-icon { font-size: 20px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 6px; }

.nav-item {
  color: inherit;
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  font-size: 14px;
  transition: background 0.15s;
}

.nav-item.active, .nav-item:hover {
  background: rgba(37, 99, 235, 0.25);
  color: #fff;
}

.nav-section {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #6b7280;
  margin-top: 18px;
  margin-bottom: 4px;
  padding: 0 12px;
}

/* Main */
.main { flex: 1; padding: 28px 36px 40px; margin-left: 240px; max-width: 1100px; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin: 6px 0 20px;
}

.page-eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 8px;
}

.page-title {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--text);
}

.page-subtitle {
  color: var(--muted);
  font-size: 13px;
  max-width: 520px;
}

/* Summary bar */
.summary-bar {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  margin-bottom: 20px;
}

.summary-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow);
}

.summary-label { color: var(--muted); font-size: 11px; margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.summary-value { font-size: 20px; font-weight: 600; }
.summary-value-sm { font-size: 14px; }
.summary-trend { font-size: 11px; margin-top: 4px; }
.summary-trend.up { color: var(--accent); }
.summary-trend.neutral { color: var(--muted); }

/* Cards */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}

.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; flex-wrap: wrap; gap: 8px; }
.card-title { font-size: 16px; font-weight: 600; }
.card-subtitle { font-size: 12px; color: var(--muted); }

/* Tables */
.table { width: 100%; border-collapse: collapse; font-size: 13px; }
.table th, .table td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); }
.table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  background: #f8fafc;
}
.table code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: 12px; }
.table tr { transition: background 0.1s; }
.table tbody tr:hover { background: #f8fafc; }
.table tbody tr.selected { background: #eff6ff; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}

.badge.immediate { background: rgba(234, 88, 12, 0.12); color: #c2410c; }
.badge.digest { background: rgba(15, 118, 110, 0.12); color: #0f766e; }
.badge.wrapper { background: rgba(107, 114, 128, 0.12); color: #4b5563; }
.badge.draft { background: rgba(107, 114, 128, 0.12); color: #4b5563; }
.badge.live { background: rgba(16, 185, 129, 0.12); color: #047857; }
.badge.mandatory { background: rgba(239, 68, 68, 0.12); color: #b91c1c; }
.badge.opt-out { background: rgba(59, 130, 246, 0.12); color: #1d4ed8; }
.badge.opt-in { background: rgba(245, 158, 11, 0.12); color: #92400e; }
.badge.email { background: rgba(59, 130, 246, 0.08); color: #2563eb; }
.badge.teams { background: rgba(118, 74, 188, 0.12); color: #6d28d9; }

/* Status */
.status-delivered { color: var(--success); font-weight: 500; }
.status-queued { color: var(--warning); font-weight: 500; }
.status-bounced { color: var(--danger); font-weight: 500; }
.status-draft { color: var(--muted); font-weight: 500; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; align-items: flex-end; }
.filter-group { display: flex; flex-direction: column; gap: 4px; font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.3px; }

.filter-group select, .filter-group input {
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 13px;
  background: #fff;
  font-family: inherit;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

/* Buttons */
.button {
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.08);
}

.button:hover {
  background: #f1f5f9;
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, #2563eb, #38bdf8);
  color: #fff;
  border: none;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.25);
}

.button.primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #0ea5e9);
}

.button.danger {
  background: linear-gradient(135deg, #ef4444, #f97316);
  color: #fff;
  border: none;
}

.button.danger:hover {
  background: linear-gradient(135deg, #dc2626, #ea580c);
}

.button.sm { padding: 4px 10px; font-size: 11px; }

/* Layout helpers */
.grid-two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 900px) { .grid-two { grid-template-columns: 1fr; } }

.muted { color: var(--muted); font-size: 12px; }
.footer-note { font-size: 11px; color: var(--muted); margin-top: 10px; line-height: 1.5; }

/* Template preview */
.template-preview {
  background: #f8fafc;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 16px;
  font-size: 13px;
  line-height: 1.7;
}

.template-preview .placeholder {
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
  padding: 1px 5px;
  border-radius: 3px;
  font-family: "SF Mono", "Fira Code", monospace;
  font-size: 12px;
}

.template-preview .section-header {
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
  margin-bottom: 8px;
}

.template-preview .topic-section {
  margin-top: 12px;
}

.template-preview .topic-section-title {
  font-weight: 600;
  font-size: 13px;
}

/* Modal / slide-out panel */
.panel-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 100;
}

.panel-overlay.open { display: block; }

.panel {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 500px;
  max-width: 90vw;
  background: #fff;
  box-shadow: -16px 0 40px rgba(15, 23, 42, 0.18);
  z-index: 101;
  padding: 28px;
  overflow-y: auto;
  border-left: 1px solid var(--border);
}

.panel.open { display: block; }

.panel-title { font-size: 18px; font-weight: 600; margin-bottom: 18px; }

.panel-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--muted);
}

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.3px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 13px;
  font-family: inherit;
}
.form-group textarea { min-height: 80px; resize: vertical; }

.form-actions { display: flex; gap: 8px; margin-top: 18px; }

/* Validation */
.validation-ok { color: var(--success); font-size: 12px; }
.validation-warn { color: var(--warning); font-size: 12px; }
.validation-error { color: var(--danger); font-size: 12px; }

/* Tabs */
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--border); margin-bottom: 16px; }
.tab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color 0.15s, border-color 0.15s;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
}
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab:hover { color: var(--text); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Channel icons */
.channel-icon { font-size: 14px; }

/* Branding page */
.organ-rows { display: flex; flex-direction: column; gap: 8px; margin-bottom: 8px; }
.organ-row { display: grid; grid-template-columns: 1fr 1.2fr auto; gap: 8px; }
.organ-row input { padding: 6px 8px; border-radius: 6px; border: 1px solid var(--border); font-size: 12px; }

/* Field picker */
.field-picker { display: flex; flex-wrap: wrap; gap: 6px; }
.field-chip {
  border: 1px solid var(--border);
  background: #fff;
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  cursor: pointer;
}
.field-chip:hover { background: #f1f5f9; }

/* Topic filters */
.filter-rows { display: flex; flex-direction: column; gap: 8px; }
.filter-row {
  display: grid;
  grid-template-columns: 1.2fr 1fr 0.8fr 1.2fr auto;
  gap: 8px;
  align-items: center;
}
.filter-row select,
.filter-row input {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--border);
  font-size: 12px;
  font-family: inherit;
}
.filter-row .button { padding: 4px 10px; font-size: 11px; }

.email-frame {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  max-width: 520px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.email-header {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 16px;
  background: #f1f5f9;
  border-bottom: 1px solid var(--border);
}

.email-logo { font-size: 22px; }
.email-title { font-weight: 600; }
.email-organ { font-size: 12px; color: var(--muted); }

.email-body { padding: 18px; font-size: 13px; line-height: 1.6; }
.email-footer {
  padding: 14px 18px;
  font-size: 11px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: #f8fafc;
}

.sender-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin: 6px 0 6px;
}