:root {
    --primary: #2563eb; --success: #10b981; --danger: #ef4444;
    --text-main: #1e293b; --text-muted: #64748b;
    --bg-body: #f1f5f9; --bg-card: #ffffff; --border-color: #e2e8f0;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Segoe UI', sans-serif; background-color: var(--bg-body); color: var(--text-main); font-size: 14px; padding: 20px; }
.header { display: flex; justify-content: space-between; align-items: center; background: white; padding: 15px 20px; border-radius: 8px; margin-bottom: 20px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.btn { padding: 10px 16px; border-radius: 8px; font-weight: 600; cursor: pointer; border: none; }
.btn-primary { background-color: var(--primary); color: #fff; }
.btn-danger { background-color: var(--danger); color: #fff; }
.btn-secondary { background-color: #fff; border: 1px solid var(--border-color); color: var(--text-main); }
.card { background: white; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); padding: 20px; }
table { width: 100%; border-collapse: collapse; text-align: left; }
th { background-color: #f8fafc; padding: 12px; font-size: 12px; color: var(--text-muted); text-transform: uppercase; border-bottom: 1px solid var(--border-color); }
td { padding: 12px; border-bottom: 1px solid var(--border-color); }
.row-main { font-weight: 600; cursor: pointer; }
.row-main:hover { background-color: #f8fafc; }
.row-sub { background-color: #f8fafc; font-size: 13px; display: none; }
.row-sub.open { display: table-row; }
.toggle-btn { display: inline-block; width: 20px; cursor: pointer; color: var(--primary); font-weight: bold; }
.delta-plus { color: var(--success); font-weight: 700; }
.delta-minus { color: var(--danger); font-weight: 700; }

/* Модалка */
.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 1000; padding: 20px; overflow-y: auto; }
.modal { background: #fff; width: 100%; max-width: 1100px; margin: 0 auto; border-radius: 12px; padding: 24px; }
.form-control { padding: 10px; border: 1px solid var(--border-color); border-radius: 8px; width: 100%; }