* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #4F0000;
    min-height: 100vh;
    display: flex;
    flex-direction: column; /* stack container + footer */
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    background: #FFFAF0;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    padding: 40px;
    max-width: 500px;
    width: 100%;
}

h1 {
    color: #333;
    margin-bottom: 30px;
    text-align: center;
    font-size: 28px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
    font-family: inherit;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

input[type="number"] {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.required {
    color: #e74c3c;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 30px;
}

button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-submit {
    background: #4f0000;
    color: white;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-reset {
    background: #ecf0f1;
    color: #555;
}

.btn-reset:hover {
    background: #bdc3c7;
}

.loading {
    display: none;
    text-align: center;
    color: #667eea;
    font-size: 14px;
    margin-top: 10px;
}

.loading.active {
    display: block;
}

.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid #667eea;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
    margin-right: 8px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.error {
    color: #e74c3c;
    font-size: 13px;
    margin-top: 5px;
    display: none;
}

.error.active {
    display: block;
}

.success {
    background: #d5f4e6;
    color: #27ae60;
    padding: 12px;
    border-radius: 4px;
    margin-bottom: 20px;
    display: none;
}

.success.active {
    display: block;
}

.field-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.field-group .form-group {
    margin-bottom: 0;
}

@media (max-width: 480px) {
    .container {
        padding: 20px;
    }

    h1 {
        font-size: 24px;
        margin-bottom: 20px;
    }

    .field-group {
        grid-template-columns: 1fr;
    }
}

.page-footer {
    margin-top: 18px;
    text-align: center;
    color: #666;
    font-size: 12px;
}