/**
 * Form Validation Styles
 * Echtzeit-Validierung mit visuellem Feedback
 */

/* ================================
   Form Group Layout
   ================================ */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text, #1a1a1a);
}

.form-group label.required::after {
    content: ' *';
    color: var(--color-danger, #DC2626);
}

/* ================================
   Input Field States
   ================================ */
input,
textarea,
select {
    transition: border-color 0.2s, box-shadow 0.2s, background-color 0.2s;
}

/* Valid State */
input.is-valid,
textarea.is-valid,
select.is-valid {
    border-color: var(--color-success, #2D7D46);
    padding-right: 40px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%232D7D46' stroke-width='3'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
}

/* Invalid State */
input.is-invalid,
textarea.is-invalid,
select.is-invalid {
    border-color: var(--color-danger, #DC2626);
    background-color: rgba(220, 38, 38, 0.05);
}

input.is-invalid:focus,
textarea.is-invalid:focus,
select.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
    outline-color: var(--color-danger, #DC2626);
}

input.is-valid:focus,
textarea.is-valid:focus,
select.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(45, 125, 70, 0.2);
    outline-color: var(--color-success, #2D7D46);
}

/* ================================
   Error Messages
   ================================ */
.field-error {
    color: var(--color-danger, #DC2626);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    animation: slideDown 0.3s ease-out;
    padding: 0.5rem 0.75rem;
    background-color: rgba(220, 38, 38, 0.08);
    border-radius: var(--radius-md, 0.5rem);
    border-left: 3px solid var(--color-danger, #DC2626);
}

.field-error .error-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    background: var(--color-danger, #DC2626);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================
   Character Counter
   ================================ */
.char-counter {
    font-size: 0.875rem;
    color: var(--color-text-light, #6B7280);
    text-align: right;
    margin-top: 0.25rem;
    transition: color 0.3s;
}

.char-counter.warning {
    color: var(--color-warning, #D97706);
    font-weight: 600;
}

.char-counter.info {
    color: var(--color-info, #2563EB);
}

.char-counter.success {
    color: var(--color-success, #2D7D46);
    font-weight: 500;
}

/* ================================
   Toast Notifications
   ================================ */
.validation-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    min-width: 300px;
    max-width: 500px;
    padding: 1rem 1.25rem;
    background: var(--color-surface, #ffffff);
    border-radius: var(--radius-lg, 1rem);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 10001;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.9375rem;
}

.validation-toast.show {
    opacity: 1;
    transform: translateX(0);
}

.validation-toast .toast-icon {
    flex-shrink: 0;
    display: flex;
}

.validation-toast .toast-message {
    flex: 1;
    line-height: 1.4;
}

.validation-toast .toast-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-light, #6B7280);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    margin-left: 0.5rem;
}

.validation-toast .toast-close:hover {
    color: var(--color-text, #1a1a1a);
}

/* Toast Variants */
.validation-toast.toast-error {
    border-left: 4px solid var(--color-danger, #DC2626);
}

.validation-toast.toast-error .toast-icon svg {
    stroke: var(--color-danger, #DC2626);
}

.validation-toast.toast-success {
    border-left: 4px solid var(--color-success, #2D7D46);
}

.validation-toast.toast-success .toast-icon svg {
    stroke: var(--color-success, #2D7D46);
}

.validation-toast.toast-info {
    border-left: 4px solid var(--color-info, #2563EB);
}

.validation-toast.toast-info .toast-icon svg {
    stroke: var(--color-info, #2563EB);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 768px) {
    .validation-toast {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        min-width: auto;
    }
}

/* ================================
   Focus Improvements
   ================================ */
input:focus,
textarea:focus,
select:focus {
    outline: 3px solid var(--color-primary, #C41E68);
    outline-offset: 2px;
}

input.is-invalid:focus,
textarea.is-invalid:focus {
    outline-color: var(--color-danger, #DC2626);
}

input.is-valid:focus,
textarea.is-valid:focus {
    outline-color: var(--color-success, #2D7D46);
}

/* ================================
   Accessibility
   ================================ */
@media (prefers-reduced-motion: reduce) {
    .field-error,
    .validation-toast,
    input,
    textarea,
    select {
        animation: none;
        transition: none;
    }

    .validation-toast.show {
        transform: none;
    }
}

/* High Contrast */
@media (prefers-contrast: high) {
    .field-error {
        border-left-width: 5px;
        background-color: transparent;
        border: 2px solid var(--color-danger, #DC2626);
    }

    input.is-invalid,
    textarea.is-invalid,
    select.is-invalid {
        border-width: 3px;
    }
}