/* Tax Invoice Request Form Styles */
:root {
    --primary-color: #4a6bef;
    --primary-hover: #3a5bdf;
    --text-color: #333;
    --label-color: #666;
    --error-color: #e53935;
    --success-color: #43a047;
    --border-color: #ddd;
    --background-color: #f9f9f9;
    --card-background: #fff;
    --focus-shadow: 0 0 0 2px rgba(74, 107, 239, 0.25);
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.tir-form {
    font-family: var(--font-family);
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem;
    background-color: var(--card-background);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-radius: 8px;
}

.tir-form h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 600;
}

.tir-form .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.tir-form .form-group {
    margin-bottom: 1.25rem;
    position: relative;
}

.tir-form .form-group.required label:after {
    content: "*";
    color: var(--error-color);
    margin-left: 4px;
}

.tir-form label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--label-color);
    font-size: 0.95rem;
}

.tir-form input,
.tir-form select,
.tir-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--background-color);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.tir-form input:focus,
.tir-form select:focus,
.tir-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--focus-shadow);
    background-color: #fff;
}

.tir-form input::placeholder,
.tir-form textarea::placeholder {
    color: #aaa;
}

.tir-form input:disabled {
    background-color: #f2f2f2;
    color: #777;
    cursor: not-allowed;
}

.tir-form .submit-button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    display: block;
    margin: 1.5rem auto 0;
    width: 100%;
    max-width: 300px;
}

.tir-form .submit-button:hover {
    background-color: var(--primary-hover);
}

.tir-form .submit-button:active {
    transform: translateY(1px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .tir-form {
        padding: 1.5rem;
    }
    
    .tir-form .form-grid {
        grid-template-columns: 1fr;
    }
}

/* Error messages */
.tir-form .error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 0.35rem;
    display: none;
}

.tir-form input.error,
.tir-form select.error,
.tir-form textarea.error {
    border-color: var(--error-color);
}

/* Success message */
.tir-form .success-message {
    background-color: rgba(67, 160, 71, 0.1);
    color: var(--success-color);
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1.5rem;
    text-align: center;
    display: none;
}

/* Loading state */
.tir-form .loading {
    position: relative;
    opacity: 0.7;
    pointer-events: none;
}

.tir-form .loading:after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1.5rem;
    height: 1.5rem;
    margin: -0.75rem 0 0 -0.75rem;
    border: 2px solid rgba(74, 107, 239, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 0.8s infinite linear;
}

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