.gvw-calc-container {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 25px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #0f172a;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.gvw-calc-container h2 {
    color: #002b49;
    font-size: 1.25rem;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 8px;
    margin-top: 25px;
}

.gvw-room-block {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
}

.gvw-result-card {
    background: #f1f5f9;
    border-left: 4px solid #002b49;
    padding: 15px;
    border-radius: 4px;
    margin-bottom: 15px;
}

.gvw-select-model {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    background-color: #ffffff;
}

.gvw-room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gvw-remove-room {
    background: #ef4444;
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
}

.gvw-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.gvw-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 15px; }

@media (max-width: 600px) {
    .gvw-grid-2, .gvw-grid-3 { grid-template-columns: 1fr; }
}

.gvw-form-group { margin-bottom: 12px; }
.gvw-form-group label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 0.9rem; }
.gvw-form-group input, .gvw-form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    box-sizing: border-box;
}

.gvw-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 8px;
    margin-top: 10px;
}

.gvw-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.2s;
    margin-top: 10px;
}

.gvw-btn-primary { background: #002b49; color: #fff; }
.gvw-btn-secondary { background: #64748b; color: #fff; }
.gvw-btn-success { background: #0284c7; color: #fff; width: 100%; margin-top: 15px; }

.gvw-total-box {
    background: #002b49;
    color: #fff;
    padding: 15px;
    font-size: 1.2rem;
    font-weight: bold;
    border-radius: 6px;
    text-align: center;
    margin: 15px 0;
}

.gvw-hidden { display: none; }
.gvw-message-box { margin-top: 15px; padding: 12px; border-radius: 4px; text-align: center; font-weight: bold; display: none; }
.gvw-success { background: #dcfce7; color: #166534; display: block; }
.gvw-error { background: #fee2e2; color: #991b1b; display: block; }