/* Стили для валидации форм */

input.valid,
textarea.valid,
select.valid {
    border-color: #28a745;
}

input.invalid,
textarea.invalid,
select.invalid {
    border-color: #dc3545;
}

.field-errors {
    color: #dc3545;
    font-size: 0.85em;
    margin-top: 3px;
}

.field-errors div {
    margin: 2px 0;
}

/* Индикатор загрузки */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    margin-top: 20px;
    font-size: 1.2em;
}

/* Кнопка в состоянии loading */
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

button.loading {
    position: relative;
    color: transparent;
}

button.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

/* Toast уведомления */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    min-width: 250px;
    max-width: 400px;
    padding: 15px 20px;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    z-index: 10000;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    background: #28a745;
    color: white;
}

.toast.error {
    background: #dc3545;
    color: white;
}

.toast.warning {
    background: #ffc107;
    color: #000;
}

.toast.info {
    background: #17a2b8;
    color: white;
}