/**
 * SIKU Blocks - Frontend Styles
 *
 * Minimal, theme-compatible styling for Gutenberg blocks.
 *
 * @package SIKU
 */

/* CSS Custom Properties for theme compatibility */
:root {
    --siku-border-radius: 8px;
    --siku-transition: 0.2s ease;
    --siku-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --siku-shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.12);
}

/* ==========================================================================
   Block Placeholder (Editor)
   ========================================================================== */

.siku-block-placeholder {
    padding: 2rem;
    text-align: center;
    background: #f0f0f0;
    border: 2px dashed #ccc;
    border-radius: var(--siku-border-radius);
    color: #666;
}

.siku-block-notice {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    background: #f0f6fc;
    border-left: 4px solid #0073aa;
    font-size: 0.875rem;
    color: #1e3a5f;
}

/* ==========================================================================
   Taxonomy Landing Block
   ========================================================================== */

.siku-taxonomy-landing {
    --columns: var(--siku-landing-columns, 4);
}

.siku-landing-grid {
    display: grid;
    grid-template-columns: repeat(var(--columns), 1fr);
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .siku-landing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .siku-landing-grid {
        grid-template-columns: 1fr;
    }
}

.siku-landing-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    text-decoration: none;
    color: inherit;
    background: var(--wp--preset--color--base, #fff);
    border: 1px solid var(--wp--preset--color--contrast, #ddd);
    border-radius: var(--siku-border-radius);
    transition: transform var(--siku-transition), box-shadow var(--siku-transition);
}

.siku-landing-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--siku-shadow-hover);
    text-decoration: none;
}

.siku-landing-item:focus {
    outline: 2px solid var(--wp--preset--color--primary, #0073aa);
    outline-offset: 2px;
}

.siku-landing-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: var(--wp--preset--color--primary, #333);
}

.siku-landing-icon svg {
    width: 48px;
    height: 48px;
}

.siku-landing-label {
    font-size: 1.125rem;
    font-weight: 600;
    text-align: center;
}

/* ==========================================================================
   Taxonomy List Block
   ========================================================================== */

.siku-taxonomy-listing {
    --columns: var(--siku-grid-columns, 4);
}

.siku-taxonomy-header {
    margin-bottom: 1.5rem;
    text-align: center;
}

.siku-taxonomy-header h2 {
    margin: 0 0 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.siku-listing-title-icon {
    display: inline-flex;
    flex-shrink: 0;
}

.siku-listing-header-icon {
    width: 32px;
    height: 32px;
}

.siku-count {
    margin: 0;
    color: var(--wp--preset--color--contrast, #666);
    font-size: 0.9rem;
}

/* Search Form */
.siku-search-form {
    position: relative;
    max-width: 400px;
    margin: 0 auto 2rem;
}

.siku-search-input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--wp--preset--color--contrast, #ccc);
    border-radius: var(--siku-border-radius);
    background: var(--wp--preset--color--base, #fff);
}

.siku-search-input:focus {
    outline: none;
    border-color: var(--wp--preset--color--primary, #0073aa);
    box-shadow: 0 0 0 2px rgba(0, 115, 170, 0.2);
}

.siku-search-clear {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.25rem 0.5rem;
    font-size: 1.25rem;
    line-height: 1;
    color: #666;
    background: transparent;
    border: none;
    cursor: pointer;
}

.siku-search-clear:hover {
    color: #333;
}

/* Grid */
.siku-taxonomy-grid {
    display: grid;
    grid-template-columns: repeat(var(--columns), 1fr);
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .siku-taxonomy-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .siku-taxonomy-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .siku-taxonomy-grid {
        grid-template-columns: 1fr;
    }
}

/* Card */
.siku-card {
    background: var(--wp--preset--color--base, #fff);
    border-radius: var(--siku-border-radius);
    overflow: hidden;
    box-shadow: var(--siku-shadow);
    transition: transform var(--siku-transition), box-shadow var(--siku-transition);
}

.siku-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--siku-shadow-hover);
}

.siku-card-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.siku-card-link:hover {
    text-decoration: none;
}

.siku-card-image {
    position: relative;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: #f0f0f0;
}

.siku-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--siku-transition);
}

.siku-card:hover .siku-card-image img {
    transform: scale(1.05);
}

.siku-card-image--placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.siku-card-placeholder-icon {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
}

.siku-card-content {
    padding: 1rem;
}

.siku-card-title {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

.siku-card-scientific {
    margin: 0 0 0.5rem;
    font-size: 0.85rem;
    color: var(--wp--preset--color--contrast, #666);
}

.siku-card-description {
    margin: 0;
    font-size: 0.85rem;
    color: var(--wp--preset--color--contrast, #666);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Loading */
.siku-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--wp--preset--color--contrast, #666);
}

.siku-loading-spinner {
    display: flex;
    gap: 6px;
    margin-bottom: 0.75rem;
}

.siku-loading-spinner span {
    width: 10px;
    height: 10px;
    background: var(--wp--preset--color--primary, #0073aa);
    border-radius: 50%;
    animation: siku-bounce 1.4s ease-in-out infinite both;
}

.siku-loading-spinner span:nth-child(1) {
    animation-delay: -0.32s;
}

.siku-loading-spinner span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes siku-bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.siku-loading-text {
    font-size: 0.9rem;
}

/* Messages */
.siku-no-more,
.siku-no-items {
    text-align: center;
    padding: 1.5rem;
    color: var(--wp--preset--color--contrast, #666);
    font-size: 0.9rem;
}

.siku-error {
    padding: 1rem 1.5rem;
    background: #fcf0f0;
    border: 1px solid #ebccd1;
    border-radius: var(--siku-border-radius);
    margin-bottom: 1.5rem;
}

.siku-error-message {
    margin: 0;
    color: #a94442;
}

.siku-sentinel {
    height: 1px;
    visibility: hidden;
}

/* ==========================================================================
   Taxonomy Single Block
   ========================================================================== */

/* Block wrapper - styles come from siku-taxonomy.css */
.siku-taxonomy-single-block {
    /* Inherits all styling from siku-taxonomy.css via the nested .siku-taxonomy-detail */
}

/* ==========================================================================
   Screen Reader Text
   ========================================================================== */

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}