/**
 * components.css
 * Reusable UI components: buttons, cards, forms.
 * No layout. No page-specific styles.
 */


/* ============================================================
   BUTTONS
============================================================ */

.btn {
    display:          inline-flex;
    align-items:      center;
    justify-content:  center;
    gap:              var(--btn-gap);               /* em - scales with font size */
    padding:          var(--btn-padding-y) var(--btn-padding-x); /* em */
    border-radius:    var(--btn-radius);
    font-size:        var(--btn-font-size);
    font-weight:      var(--btn-font-weight);
    line-height:      1;
    text-align:       center;
    white-space:      nowrap;
    cursor:           pointer;
    transition:       background-color var(--transition-fast),
                      color            var(--transition-fast),
                      border-color     var(--transition-fast),
                      box-shadow       var(--transition-fast);
    border:           2px solid transparent;
    text-decoration:  none;
}

.btn--primary {
    background-color: var(--btn-primary-bg);
    color:            var(--btn-primary-text);
    border-color:     var(--btn-primary-bg);
}

.btn--primary:hover {
    background-color: var(--btn-primary-bg-hover);
    border-color:     var(--btn-primary-bg-hover);
}

.btn--secondary {
    background-color: var(--btn-secondary-bg);
    color:            var(--btn-secondary-text);
    border-color:     var(--btn-secondary-border);
}

.btn--secondary:hover {
    background-color: var(--btn-secondary-hover-bg);
    color:            var(--btn-secondary-hover-text);
    border-color:     var(--btn-secondary-hover-bg);
}

.btn--sm {
    padding:   var(--btn-padding-y-sm) var(--btn-padding-x-sm); /* em */
    font-size: var(--text-small);
}

.btn--lg {
    padding:   var(--btn-padding-y-lg) var(--btn-padding-x-lg); /* em */
    font-size: var(--text-lead);
}


/* ============================================================
   CARDS
============================================================ */

.post-card {
    position:         relative;    /* Required for stretched link */
    display:          flex;
    flex-direction:   column;
    background-color: var(--card-bg);
    border:           1px solid var(--card-border);
    border-radius:    var(--card-radius);
    overflow:         hidden;
    box-shadow:       var(--card-shadow);
    transition:       box-shadow var(--transition-base),
                      transform  var(--transition-base);
}

.post-card:hover {
    box-shadow: var(--card-shadow-hover);
    transform:  translateY( -2px );
}

/* Image container with aspect ratio */
.post-card__image {
    position:       relative;
    padding-bottom: var(--card-image-ratio);
    overflow:       hidden;
    flex-shrink:    0;
}

.post-card__image img {
    position:   absolute;
    inset:      0;
    width:      100%;
    height:     100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.post-card:hover .post-card__image img {
    transform: scale( 1.04 );
}

.post-card__body {
    display:        flex;
    flex-direction: column;
    flex:           1;
    padding:        var(--card-padding);
}

.post-card__meta {
    margin-bottom: var(--space-xs);
}

.post-card__date {
    font-size: var(--text-label);
    color:     var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.post-card__title {
    font-size:     var(--text-h3);
    margin-bottom: var(--space-xs);
}

/* Stretched link technique */
.post-card__link {
    color:           var(--color-text);
    text-decoration: none;
    transition:      color var(--transition-fast);
}

.post-card__link::after {
    content:  '';
    position: absolute;
    inset:    0;
}

.post-card:hover .post-card__link {
    color: var(--color-brand);
}

.post-card__excerpt {
    font-size:   var(--text-small);
    color:       var(--color-text-muted);
    line-height: var(--leading-snug);
    margin-top:  var(--space-xs);
}


/* ============================================================
   FORMS
============================================================ */

.form-field {
    display:        flex;
    flex-direction: column;
    gap:            var(--space-xs);
    margin-bottom:  var(--space-sm);
}

.form-label {
    font-size:   var(--text-small);
    font-weight: 600;
    color:       var(--color-text);
}

.form-input,
.form-textarea,
.form-select {
    width:            100%;
    padding:          var(--input-padding-y) var(--input-padding-x); /* em - scales with font size */
    font-size:        var(--text-body);
    color:            var(--input-text);
    background-color: var(--input-bg);
    border:           1px solid var(--input-border);
    border-radius:    var(--input-radius);
    transition:       border-color var(--transition-fast),
                      box-shadow   var(--transition-fast);
    appearance:       none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline:      none;
    border-color: var(--input-border-focus);
    box-shadow:   0 0 0 var(--focus-ring-offset) var(--input-bg),
                  0 0 0 calc( var(--focus-ring-offset) + 2px ) var(--color-focus);
}

.form-textarea {
    min-height: 140px;
    resize:     vertical;
}

.form-label__optional {
    font-weight: 400;
    color:       var(--color-text-muted);
}


/* ============================================================
   FLOATING LABEL — base form variant
   Add "form-field--floating" alongside "form-field" to float the
   label inside the input until it's focused or filled.
   Requires: input/textarea BEFORE label in markup (sibling selector),
   and placeholder=" " (a single space) on the input/textarea so
   :placeholder-shown stays true only while genuinely empty.
   Does not touch :focus-visible — the global outline ring in
   accessibility.css still applies on top of the underline colour change.
============================================================ */

.form-field--floating {
    position:    relative;
    padding-top: var(--space-md);
}

.form-field--floating .form-input,
.form-field--floating .form-textarea {
    background:    transparent;
    border:        none;
    border-bottom: 1px solid var(--input-border);
    border-radius: 0;
    padding:       var(--input-padding-y) 0 calc( var(--input-padding-y) * 0.6 );
    transition:    border-color var(--transition-fast);
}

.form-field--floating .form-input:focus,
.form-field--floating .form-textarea:focus {
    border-bottom-color: var(--input-border-focus);
}

.form-field--floating .form-input::placeholder,
.form-field--floating .form-textarea::placeholder {
    color: transparent;
}

.form-field--floating .form-label {
    position:       absolute;
    left:           0;
    top:            calc( var(--space-md) + var(--input-padding-y) );
    font-size:      var(--text-body);
    font-weight:    400;
    color:          var(--input-placeholder);
    opacity:        0.7;
    pointer-events: none;
    line-height:    1;
    transition:     top var(--transition-fast),
                    font-size var(--transition-fast),
                    opacity var(--transition-fast);
}

.form-field--floating .form-input:focus ~ .form-label,
.form-field--floating .form-input:not( :placeholder-shown ) ~ .form-label,
.form-field--floating .form-textarea:focus ~ .form-label,
.form-field--floating .form-textarea:not( :placeholder-shown ) ~ .form-label {
    top:       0;
    font-size: var(--text-label);
    opacity:   1;
    color:     var(--color-text-muted);
}

/* date inputs don't support :placeholder-shown, so the label above
   stays floated even when empty. contact-form.js toggles
   form-field--date-empty from the real value so this can restore the
   normal empty look until focused or filled. */
.form-field--floating.form-field--date-empty:not( :focus-within ) .form-input[type="date"] {
    color: transparent;
}

.form-field--floating.form-field--date-empty:not( :focus-within ) .form-label {
    top:         calc( var(--space-md) + var(--input-padding-y) );
    font-size:   var(--text-body);
    font-weight: 400;
    opacity:     0.7;
    color:       var(--input-placeholder);
}


/* ============================================================
   CONTACT FORM
   Generic form used by template-parts/components/contact-form.php.
   Handling lives in inc/contact-form.php.
============================================================ */

.contact-form-wrap {
    display:        flex;
    flex-direction: column;
    gap:            var(--space-md);
}

.contact-form {
    display:        flex;
    flex-direction: column;
    gap:            var(--space-sm);
}

/* .form-field's own margin-bottom would stack with the flex gap above —
   let gap alone control spacing between the form's direct children. */
.contact-form > .form-field {
    margin-bottom: 0;
}

/* optional 2-column layout for a form's shorter fields, wrap a group
   of .form-field in contact-form__grid. stacks to 1 column below 480px */
.contact-form__grid {
    display:               grid;
    grid-template-columns: 1fr;
    gap:                   var(--space-sm);
}

@media ( min-width: 480px ) {
    .contact-form__grid {
        grid-template-columns: 1fr 1fr;
    }
}

.contact-form__grid > .form-field {
    margin-bottom: 0;
}

/* Honeypot — kept in the DOM and tab-order-excluded, not display:none,
   so naive bots that skip hidden fields still fill it in. */
.contact-form__honeypot {
    position: absolute;
    left:     -9999px;
    width:    1px;
    height:   1px;
    overflow: hidden;
}

.contact-form__count {
    display:    block;
    margin-top: var(--space-xs);
    font-size:  var(--text-label);
    color:      var(--color-text-muted);
    text-align: right;
}

.contact-form__count--limit {
    color: var(--input-error);
}

.contact-form__status {
    padding:       var(--space-sm) var(--card-padding);
    border-radius: var(--radius-sm);
    font-size:     var(--text-small);
    line-height:   var(--leading-base);
}

.contact-form__status--success {
    background: var(--color-surface-alt);
    color:      var(--color-text);
}

.contact-form__status--error {
    color: var(--input-error);
}

.contact-form__submit {
    align-self: flex-start;
}


/* ============================================================
   ERROR 404
============================================================ */

.error-404 {
    text-align:  center;
    padding:     var(--space-2xl) var(--container-padding);
    max-width:   600px;
    margin:      0 auto;
}

.error-404__title {
    margin-bottom: var(--space-sm);
}

.error-404__message {
    color:         var(--color-text-muted);
    margin-bottom: var(--space-lg);
}