/* ===== ESTILOS PARA FORMULARIOS CON VALIDACIÓN ===== */

/* Campos con error */
input.error,
textarea.error,
select.error {
    border-color: var(--danger) !important;
    animation: shake 0.3s;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Mensaje de error */
.field-error {
    color: var(--danger);
    font-size: 13px;
    margin-top: 5px;
    display: flex;
    align-items: center;
    gap: 5px;
    animation: fadeIn 0.3s;
}

.field-error::before {
    content: '\f06a';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Campos válidos */
input.valid,
textarea.valid {
    border-color: var(--success);
}

/* Loading state para botones */
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

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