#vd-calc-wrapper {
    --primary: #10b981;
    --dark: #059669;
    --bg: #f4f7f6;
    --card: #ffffff;
    --text: #1e293b;
    --border: #cbd5e1;
    background-color: var(--bg);
    padding: 25px 15px;
    border-radius: 12px;
    font-family: 'Segoe UI', sans-serif;
    color: var(--text);
    max-width: 600px;
    margin: 0 auto;
}
.vd-main-header { text-align: center; margin-bottom: 25px; }
.vd-main-header h1 { font-size: 20px; margin: 0; font-weight: bold; }
.vd-card { background: var(--card); padding: 25px; border-radius: 12px; box-shadow: 0 4px 10px rgba(0,0,0,0.08); border-top: 6px solid var(--primary); }
.vd-input-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 20px; }
.vd-input-item label { display: block; font-size: 11px; font-weight: 700; text-transform: uppercase; margin-bottom: 5px; color: #475569; }
.vd-input-item input, .vd-input-item select { width: 100%; padding: 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 16px; background: #fdfdfd; box-sizing: border-box; }
.full-width { grid-column: span 2; }
.vd-calc-btn { width: 100%; background: var(--primary); color: white; border: none; padding: 15px; font-size: 18px; font-weight: bold; border-radius: 8px; cursor: pointer; margin-bottom: 10px; }
.vd-reset-btn { width: 100%; background: #f1f5f9; color: #64748b; border: none; padding: 10px; border-radius: 8px; cursor: pointer; }
.vd-result-container { margin-top: 25px; background: #f0fdf4; padding: 20px; border-radius: 10px; border: 1px solid #d1fae5; display: none; }
.res-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.res-row strong { font-size: 18px; color: var(--dark); }
.vd-badge { text-align: center; padding: 8px; border-radius: 6px; font-weight: bold; margin-top: 10px; font-size: 13px; }
.vd-info-section { margin-top: 30px; padding: 20px; background: #fff; border-radius: 12px; border: 1px solid #cbd5e1; }
.vd-formula-card { background: #f8fafc; padding: 12px; border-radius: 8px; border-left: 5px solid var(--primary); margin-bottom: 10px; }
.vd-green-text { color: var(--dark); font-weight: bold; }
@media (max-width: 480px) { .vd-input-grid { grid-template-columns: 1fr; } .full-width { grid-column: span 1; } .vd-main-header h1 { font-size: 18px; } }