/* ===================================
   Accessible Form Styles
   WCAG AA compliant form styling
   =================================== */

/* Form Container */
.contact__form--accessible {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* Form Groups */
.form__group {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form__group--checkbox {
    display: flex;
    align-items: flex-start;
}

/* Labels */
.form__label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.form__label--checkbox {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0;
    cursor: pointer;
    font-weight: normal;
}

/* Required Indicator */
.form__required {
    color: var(--color-error);
    font-weight: 700;
    margin-left: 4px;
    font-size: 1.1em;
}

/* Input Fields */
.form__input,
.form__select,
.form__textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--input-border);
    border-radius: var(--button-radius-default);
    background: var(--color-white);
    color: var(--text-primary);
    transition: var(--transition-base);
    min-height: 44px; /* Minimum touch target size */
}

/* Focus States */
.form__input:focus,
.form__select:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 3px rgba(3, 196, 235, 0.1);
}

/* Invalid States */
.form__input[aria-invalid="true"],
.form__select[aria-invalid="true"],
.form__textarea[aria-invalid="true"] {
    border-color: var(--input-error-border);
    background-color: rgba(220, 53, 69, 0.05);
}

.form__input[aria-invalid="true"]:focus,
.form__select[aria-invalid="true"]:focus,
.form__textarea[aria-invalid="true"]:focus {
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* Valid States */
.form__input:valid:not(:placeholder-shown),
.form__select:valid:not([value=""]),
.form__textarea:valid:not(:placeholder-shown) {
    border-color: var(--input-success-border);
}

/* Textarea Specific */
.form__textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

/* Select Specific */
.form__select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 20px;
    padding-right: calc(var(--spacing-md) * 3);
}

/* Checkbox */
.form__checkbox {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-sm);
    margin-top: 2px;
    flex-shrink: 0;
    cursor: pointer;
}

.form__checkbox:focus {
    outline: 3px solid var(--input-focus-border);
    outline-offset: 2px;
}

/* Hints and Help Text */
.form__hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.form__char-count {
    float: right;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Error Messages */
.form__error {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-error);
    font-weight: 500;
    min-height: 1.2em;
}

.form__error:empty {
    display: none;
}

.form__error::before {
    content: "⚠ ";
    margin-right: 4px;
}

/* Form Status Messages */
.form__status {
    margin: var(--spacing-lg) 0;
}

.form__success,
.form__error-message {
    padding: var(--spacing-md);
    border-radius: var(--button-radius-default);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
}

.form__success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--color-success);
    border: 2px solid var(--color-success);
}

.form__error-message {
    background: rgba(220, 53, 69, 0.1);
    color: var(--color-error);
    border: 2px solid var(--color-error);
}

/* Note */
.form__note {
    margin-top: var(--spacing-lg);
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

/* Loading State */
.btn[aria-busy="true"] {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn[aria-busy="true"] .btn__text,
.btn[aria-busy="true"] .btn__icon {
    visibility: hidden;
}

.btn[aria-busy="true"] .btn__loading {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
}

/* Visually Hidden (for screen readers) */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: var(--z-notification);
}

.skip-link:focus {
    top: 0;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .contact__form--accessible {
        padding: var(--spacing-lg);
    }
    
    .form__input,
    .form__select,
    .form__textarea {
        font-size: 16px; /* Prevent zoom on iOS */
    }
    
    .form__char-count {
        display: block;
        float: none;
        margin-top: var(--spacing-xs);
    }
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    .form__input,
    .form__select,
    .form__textarea {
        background: var(--bg-secondary);
        color: var(--text-primary);
        border-color: var(--border-color);
    }
    
    .form__input[aria-invalid="true"],
    .form__select[aria-invalid="true"],
    .form__textarea[aria-invalid="true"] {
        background-color: rgba(220, 53, 69, 0.1);
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .form__input,
    .form__select,
    .form__textarea {
        border-width: 3px;
    }
    
    .form__required {
        text-decoration: underline;
    }
    
    .form__error {
        font-weight: 700;
        text-decoration: underline;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .form__input,
    .form__select,
    .form__textarea,
    .btn {
        transition: none;
    }
}