body {
    background-color: #f8f9fa;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    background: #fff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.card-header {
    border-bottom: 2px solid #f1f1f1;
    margin-bottom: 25px;
    padding-bottom: 15px;
    text-align: left;
}

.card-header h3 {
    margin: 0;
    color: #1a1a1a;
    font-weight: 700;
}

.card-header.failure h3 {
    color: #dc3545;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #444;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #ff9800;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.button.primary {
    background-color: #ff9800;
    color: white;
}

.button.primary:hover {
    background-color: #e68a00;
}

.button.secondary {
    background-color: #6c757d;
    color: white;
}

.button.secondary:hover {
    background-color: #5a6268;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th,
table td {
    padding: 12px;
    border-bottom: 1px solid #eee;
    text-align: left;
}

table th {
    background-color: #fcfcfc;
    width: 40%;
    color: #666;
}

.card-footer {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.card-footer .button,
.card-footer form {
    flex: 1;
    max-width: 150px;
    min-width: 120px;
    display: flex;
}

.card-footer .button,
.card-footer form .button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.vbank-info {
    background-color: #fff9f0;
    padding: 15px;
    border-radius: 8px;
    border: 1px dashed #ff9800;
    margin: 20px 0;
}