/* ========================================
   Modal Form Styles
   ======================================== */

/* Modal Content */
.modal-content {
    border: none;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

/* Modal Header */
.modal-header {
    background: var(--primary-color);
    color: var(--white);
    border-bottom: none;
    border-radius: 10px 10px 0 0;
    padding: 20px 30px;
}

.modal-title {
    font-family: 'Russo One', sans-serif;
    font-size: 20px;
    text-transform: uppercase;
    margin: 0;
}

.modal-header .btn-close {
    filter: brightness(0) invert(1);
    opacity: 0.8;
}

.modal-header .btn-close:hover {
    opacity: 1;
}

/* Modal Body */
.modal-body {
    padding: 30px;
}

/* Form Styles */
.calculation-form .form-label {
    font-family: 'Open Sans', sans-serif;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 8px;
    font-size: 14px;
}

.calculation-form .form-control {
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 16px;
    transition: var(--transition);
}

.calculation-form .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(106, 184, 238, 0.25);
}

.calculation-form .form-control.is-invalid {
    border-color: #dc3545;
}

.calculation-form .form-control::placeholder {
    color: #999;
}

/* Submit Button - Using btn-hero style */
.calculation-form .btn-hero {
    background-color: var(--primary-color);
    color: var(--white);
    font-family: 'Russo One', sans-serif;
    text-transform: uppercase;
    padding: 15px 45px;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(106, 184, 238, 0.3);
    transition: var(--transition);
}

.calculation-form .btn-hero:hover:not(:disabled) {
    background-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(106, 184, 238, 0.4);
}

.calculation-form .btn-hero:active:not(:disabled) {
    transform: translateY(0);
}

.calculation-form .btn-hero:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Form Text */
.form-text small {
    color: #666;
    font-size: 12px;
}

/* Alert Messages */
#formSuccess,
#formError {
    border-radius: 8px;
    padding: 15px;
    font-size: 14px;
}

#formSuccess {
    background-color: #d4edda;
    border-color: #c3e6cb;
    color: #155724;
}

#formError {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

/* Invalid Feedback */
.invalid-feedback {
    font-size: 13px;
    margin-top: 5px;
    display: none;
}

.form-control.is-invalid ~ .invalid-feedback,
.was-validated .form-control:invalid ~ .invalid-feedback {
    display: block;
}

/* Validation Styles */
.was-validated .form-control:invalid {
    border-color: #dc3545;
}

.was-validated .form-control:valid {
    border-color: #28a745;
}

/* Общие стили валидации для всех форм */
.form-control.is-invalid {
    border-color: #dc3545 !important;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25) !important;
}

.form-control.is-valid {
    border-color: #28a745 !important;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25) !important;
}

/* Стили для галочек и крестиков */
.form-control.is-valid::after {
    content: "✓";
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #28a745;
    font-weight: bold;
}

.form-control.is-invalid::after {
    content: "✗";
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #dc3545;
    font-weight: bold;
}

/* Spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15em;
}

/* Responsive */
@media (max-width: 576px) {
    .modal-dialog {
        margin: 10px;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-title {
        font-size: 16px;
    }
    
    .modal-body {
        padding: 20px;
    }
    
    .calculation-form .form-control {
        padding: 10px 14px;
        font-size: 14px;
    }
    
    .calculation-form .btn-hero {
        padding: 12px 35px;
        font-size: 14px;
    }
}