:root {
    --bg: #f5f6f8;
    --card: #ffffff;
    --text: #1c2230;
    --muted: #6b7280;
    --accent: #2952e3;
    --border: #e3e6ec;
    --danger: #d9364a;
    --success: #1c8a4b;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}
.topnav {
    background: #12172b;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    height: 56px;
}
.topnav .brand { color: #fff; font-weight: 700; margin-right: 20px; }
.topnav a { color: #c7cbe0; text-decoration: none; font-size: 14px; }
.topnav a:hover { color: #fff; }
.topnav a.logout { margin-left: auto; }
.container { max-width: 1100px; margin: 0 auto; padding: 24px; }
h1 { font-size: 22px; margin-bottom: 4px; }
h2 { font-size: 17px; margin-top: 32px; }
h3 { font-size: 15px; margin-top: 0; }
.muted { color: var(--muted); font-size: 13px; }
.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 18px;
    margin: 16px 0;
}
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label {
    display: block;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--muted);
}
label input, label select, label textarea {
    display: block;
    width: 100%;
    margin-top: 4px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--text);
    font-family: inherit;
}
input[type=checkbox] { width: auto; display: inline-block; margin-right: 6px; }
button {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 9px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
}
button:hover { opacity: 0.9; }
.link-btn {
    background: none;
    color: var(--accent);
    padding: 0;
    font-weight: 500;
    text-decoration: underline;
    font-size: 12px;
}
.link-btn.danger { color: var(--danger); }
.inline-form { display: flex; gap: 8px; align-items: center; margin: 10px 0 20px; }
.inline-form input, .inline-form select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 6px; }
.data-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-top: 10px; font-size: 13px; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: #fafbfc; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }
.data-table tr:last-child td { border-bottom: none; }
.actions-cell { display: flex; gap: 10px; align-items: center; }
.stat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 16px 0; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px; text-align: center; }
.stat-num { font-size: 24px; font-weight: 700; color: var(--accent); }
.stat-label { font-size: 12px; color: var(--muted); margin-top: 4px; }
.badge { padding: 3px 8px; border-radius: 12px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-active { background: #e3f6ea; color: var(--success); }
.badge-paused { background: #fdf3d8; color: #92680a; }
.badge-unsubscribed { background: #f1f1f4; color: var(--muted); }
.badge-bounced { background: #fde3e6; color: var(--danger); }
.flash { background: #e3f6ea; color: var(--success); padding: 10px 14px; border-radius: 6px; font-size: 13px; }
.error { color: var(--danger); font-size: 13px; }
.step-panel { padding: 20px; }
.step-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.step-head h2 { margin: 0; font-size: 16px; }
.variant-box {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    margin: 10px 0;
    background: #fafbfc;
}
.variant-box summary { cursor: pointer; font-weight: 600; font-size: 13px; margin-bottom: 8px; }
.preview-box {
    margin-top: 10px;
    padding: 10px 12px;
    background: #fff;
    border: 1px dashed var(--border);
    border-radius: 6px;
    font-size: 12px;
}
.preview-box pre { white-space: pre-wrap; margin: 0; font-family: inherit; }
.google-connect-btn {
    display: inline-block;
    background: #fff;
    color: #3c4043;
    border: 1px solid var(--border);
    padding: 9px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
}
.google-connect-btn:hover { background: #f8f9fa; }
.login-body { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-box { background: var(--card); padding: 32px; border-radius: 10px; border: 1px solid var(--border); width: 320px; }
.login-box h1 { font-size: 18px; margin-bottom: 16px; }