:root {
    --primary: #1E88E5;
    --primary-dark: #1669B5;
    --text: #111827;
    --text-secondary: #6B7280;
    --border: #E5E7EB;
    --bg: #F8FAFB;
    --surface: #FFFFFF;
    --danger: #E53935;
}

* { box-sizing: border-box; }

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

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 600;
    font-size: 18px;
    color: var(--primary);
    text-decoration: none;
}

.topnav { display: flex; align-items: center; gap: 20px; }
.topnav a { color: var(--text-secondary); text-decoration: none; font-size: 14px; }
.topnav a.active, .topnav a:hover { color: var(--primary); }
.topnav .user { color: var(--text); font-size: 14px; font-weight: 500; }

.link-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    padding: 0;
}
.link-btn:hover { color: var(--danger); }

.page { max-width: 1000px; margin: 0 auto; padding: 32px 24px; }

.page-header { margin-bottom: 24px; }
.page-header h1 { margin: 0 0 4px; font-size: 24px; }
.muted { color: var(--text-secondary); font-size: 14px; }

.back-link { color: var(--primary); text-decoration: none; font-size: 14px; }

.auth-card {
    max-width: 380px;
    margin: 60px auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 15px;
    padding: 32px;
}
.auth-card h1 { margin-top: 0; font-size: 22px; }

form label {
    display: block;
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--text);
}
form input, form select {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    background: var(--bg);
}
form input:focus, form select:focus { outline: 2px solid var(--primary); border-color: var(--primary); }

.btn-primary {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 11px 20px;
    font-size: 15px;
    cursor: pointer;
    width: 100%;
}
.btn-primary:hover { background: var(--primary-dark); }

.alert {
    background: #FEF2F2;
    color: var(--danger);
    border: 1px solid #FCA5A5;
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 16px;
    font-size: 14px;
}

.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}
.plan-card {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    color: var(--text);
}
.plan-card:hover { border-color: var(--primary); }
.plan-card-title { font-weight: 600; margin-bottom: 4px; }
.plan-card-meta { color: var(--text-secondary); font-size: 13px; }

.plan-canvas {
    width: 100%;
    max-width: 900px;
    height: auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.legend { display: flex; gap: 16px; margin-top: 12px; flex-wrap: wrap; }
.legend span { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.legend i { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }

.catalog-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 32px;
}
.catalog-table th, .catalog-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.catalog-table input.num { width: 80px; }
.catalog-table input, .catalog-table select { margin: 0; padding: 6px 8px; font-size: 13px; }
.icon-badge {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 3px 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.btn-small {
    padding: 6px 10px;
    font-size: 13px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--surface);
    cursor: pointer;
}
.btn-small:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); }

.catalog-add-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    align-items: end;
}
.catalog-add-form .btn-primary { grid-column: -2 / -1; }

.inline { display: inline; }
.inline-edit { display: contents; }