:root {
  --bg: #f6f5fb;
  --card: #ffffff;
  --border: #ece9f7;
  --text: #1e1b2e;
  --muted: #6b7280;
  --primary: #6d5ef8;
  --primary-dark: #5a4be0;
  --primary-tint: #eeecfe;
  --danger: #dc2626;
  --danger-tint: #fde8e8;
  --success-tint: #d1fae5;
  --success-text: #065f46;
  --warn-tint: #fef3c7;
  --warn-text: #92400e;
  --shadow: 0 1px 2px rgba(30, 27, 46, 0.04), 0 8px 24px rgba(30, 27, 46, 0.04);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

/* Sidebar */
.sidebar {
  width: 240px;
  flex-shrink: 0;
  background: var(--card);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 24px; }

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #a78bfa);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.brand-name { font-weight: 700; font-size: 15px; line-height: 1.2; }
.brand-sub { font-size: 11px; color: var(--muted); }

.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: none;
  background: transparent;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  width: 100%;
}

.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; color: var(--muted); }

.nav-item:hover { background: var(--primary-tint); }

.nav-item.active { background: var(--primary); color: white; }
.nav-item.active svg { color: white; }

/* Main area */
.main-area { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  flex: 1;
  max-width: 420px;
}

.search-box svg { width: 16px; height: 16px; color: var(--muted); flex-shrink: 0; }

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 100%;
}

.topbar-user { display: flex; align-items: center; gap: 10px; }

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.user-name { font-size: 13px; font-weight: 600; }
.user-email { font-size: 11px; color: var(--muted); }

.page-scroll { flex: 1; padding: 28px; max-width: 1200px; width: 100%; margin: 0 auto; }

.page-head { margin-bottom: 20px; }
.page-head h1 { margin: 0 0 4px; font-size: 24px; }
.page-head p { margin: 0; color: var(--muted); font-size: 14px; }

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

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }

@media (max-width: 900px) {
  .grid-2 { grid-template-columns: 1fr; }
  .sidebar { display: none; }
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.card.narrow { max-width: 480px; }
.card.wide { overflow-x: auto; }

.card-head { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 18px; }

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon svg { width: 18px; height: 18px; }

.icon-purple { background: #eeecfe; color: #6d5ef8; }
.icon-pink { background: #fce7f3; color: #db2777; }
.icon-blue { background: #dbeafe; color: #2563eb; }
.icon-green { background: #d1fae5; color: #059669; }
.icon-orange { background: #ffedd5; color: #ea580c; }

.card-head h2 { margin: 0 0 2px; font-size: 16px; }
.card-head p, .muted { margin: 0; color: var(--muted); font-size: 13px; }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

label { display: block; margin: 14px 0 5px; font-size: 13px; font-weight: 600; color: #4b5563; }

.checkbox-label { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.checkbox-label input { width: auto; }

input[type="text"],
input[type="number"],
input[type="password"],
input[type="file"],
select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: white;
  color: var(--text);
}

input:focus, select:focus { outline: none; border-color: var(--primary); }

#editor { height: 240px; background: white; border-radius: 0 0 8px 8px; }
.ql-toolbar { border-radius: 8px 8px 0 0; background: #fbfaff; }

.body-label-row { display: flex; align-items: center; justify-content: space-between; margin: 14px 0 5px; }

.mode-toggle { display: flex; background: var(--bg); border-radius: 8px; padding: 3px; gap: 2px; }

.mode-btn {
  border: none;
  background: transparent;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  color: var(--muted);
}

.mode-btn.active { background: white; color: var(--primary-dark); box-shadow: 0 1px 2px rgba(0,0,0,0.08); }

.html-source-box {
  width: 100%;
  height: 240px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: ui-monospace, "SF Mono", Consolas, monospace;
  font-size: 12.5px;
  resize: vertical;
  background: #fbfaff;
  color: var(--text);
}

.hint-box {
  margin-top: 14px;
  padding: 12px 14px;
  background: var(--primary-tint);
  border-radius: 8px;
  font-size: 12.5px;
  color: #4c3fc9;
}

.hint-box code { background: rgba(109, 94, 248, 0.15); padding: 1px 5px; border-radius: 4px; }

.actions { margin-top: 18px; display: flex; gap: 10px; justify-content: flex-end; }

.btn-primary, .btn-ghost {
  padding: 10px 18px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { background: #f3f2fb; color: var(--text); }
.btn-ghost:hover { background: #ebe9f7; }

.stack { display: flex; flex-direction: column; gap: 10px; max-height: 520px; overflow-y: auto; }

.list-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.list-item-main { display: flex; align-items: center; gap: 12px; min-width: 0; }

.item-icon {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.item-icon svg { width: 16px; height: 16px; }

.item-title { font-weight: 600; font-size: 14px; }
.item-sub { font-size: 12px; color: var(--muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 260px; }

.badge {
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 999px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-General { background: #ede9fe; color: #6d28d9; }
.badge-Onboarding { background: #dbeafe; color: #1d4ed8; }
.badge-Newsletter { background: #fce7f3; color: #be185d; }
.badge-Product { background: #d1fae5; color: #047857; }
.badge-Promotion { background: #ffedd5; color: #c2410c; }

.row-actions { display: flex; gap: 6px; flex-shrink: 0; }

.row-actions button {
  border: none;
  background: #f3f2fb;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
}

.row-actions button.danger { background: var(--danger-tint); color: var(--danger); }

.status-badge {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 999px;
  text-transform: uppercase;
  font-weight: 700;
  flex-shrink: 0;
}

.status-pending, .status-sending { background: var(--warn-tint); color: var(--warn-text); }
.status-completed { background: var(--success-tint); color: var(--success-text); }
.status-failed { background: var(--danger-tint); color: var(--danger); }
.status-sent { background: var(--success-tint); color: var(--success-text); }

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

@media (max-width: 900px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: var(--shadow);
}

.stat-label { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.03em; }
.stat-value { font-size: 28px; font-weight: 700; margin-top: 6px; }

.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th { text-align: left; padding: 10px 12px; color: var(--muted); font-weight: 600; border-bottom: 1px solid var(--border); font-size: 12px; text-transform: uppercase; }
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); }
.data-table tr:last-child td { border-bottom: none; }

.app-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 4px 4px;
  color: var(--muted);
  font-size: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-links { display: flex; gap: 16px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }