:root {
    --bg: #f8f9fa;
    --card: #ffffff;
    --primary: #1a56db;
    --primary-hover: #1e40af;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --text: #1f2937;
    --text-light: #6b7280;
    --border: #e5e7eb;
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

.container { max-width: 1200px; margin: 0 auto; padding: 20px; }

/* Navbar */
.navbar {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}
.navbar h1 { font-size: 18px; color: var(--primary); }
.navbar a { color: var(--text-light); text-decoration: none; font-size: 14px; margin-left: 20px; }
.navbar a:hover { color: var(--primary); }

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}
.card h2 { font-size: 16px; margin-bottom: 12px; color: var(--text); }
.card h3 { font-size: 14px; margin-bottom: 8px; }

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
}
.stat-card .number { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat-card .label { font-size: 12px; color: var(--text-light); text-transform: uppercase; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 4px 10px; font-size: 12px; }

/* Forms */
input[type="text"], input[type="email"], input[type="password"], select, textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 8px;
}
textarea { min-height: 200px; font-family: monospace; font-size: 13px; }
label { font-size: 13px; font-weight: 500; display: block; margin-bottom: 4px; }

/* Tables */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { background: var(--bg); font-weight: 600; font-size: 12px; text-transform: uppercase; color: var(--text-light); }
tr:hover { background: #f3f4f6; }

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}
.badge-new { background: #dbeafe; color: #1d4ed8; }
.badge-dripping { background: #fef3c7; color: #92400e; }
.badge-completed { background: #d1fae5; color: #065f46; }
.badge-converted { background: #c7d2fe; color: #3730a3; }
.badge-unsubscribed { background: #fee2e2; color: #991b1b; }
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-sent { background: #d1fae5; color: #065f46; }
.badge-failed { background: #fee2e2; color: #991b1b; }

/* Alert */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 14px;
}
.alert-info { background: #dbeafe; color: #1e40af; }
.alert-success { background: #d1fae5; color: #065f46; }
.alert-danger { background: #fee2e2; color: #991b1b; }

/* Actions bar */
.actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

/* Filters */
.filters {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.filters select, .filters input { width: auto; margin-bottom: 0; }

/* Timeline */
.timeline { position: relative; padding-left: 24px; }
.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}
.timeline-item {
    position: relative;
    margin-bottom: 16px;
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius);
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 16px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
}
.timeline-item.sent::before { background: var(--success); }
.timeline-item.pending::before { background: var(--warning); }
.timeline-item.failed::before { background: var(--danger); }

/* Pagination */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 16px; }
.pagination a, .pagination span {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    font-size: 13px;
    color: var(--text);
}
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Login page */
.login-container {
    max-width: 400px;
    margin: 80px auto;
    padding: 40px;
    background: var(--card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.login-container h1 { text-align: center; margin-bottom: 24px; color: var(--primary); }

/* Category tag colors */
.cat-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    background: #e5e7eb;
    color: #374151;
}

/* Responsive */
@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    table { font-size: 12px; }
    th, td { padding: 6px 8px; }
}