/* ============================================================
   SmartBlog — Apple-inspired front styles
   Colors: blue rgb(37,99,235) / white / light-gray / black
   ============================================================ */

:root {
    --sb-blue:        rgb(37, 99, 235);
    --sb-blue-hover:  rgb(29, 78, 216);
    --sb-blue-light:  rgba(37, 99, 235, 0.08);
    --sb-black:       #111111;
    --sb-gray-900:    #1a1a1a;
    --sb-gray-700:    #374151;
    --sb-gray-500:    #6b7280;
    --sb-gray-300:    #d1d5db;
    --sb-gray-100:    #f3f4f6;
    --sb-gray-50:     #f9fafb;
    --sb-white:       #ffffff;
    --sb-radius:      14px;
    --sb-radius-sm:   8px;
    --sb-shadow:      0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
    --sb-shadow-md:   0 4px 24px rgba(0,0,0,.09);
    --sb-shadow-lg:   0 8px 48px rgba(0,0,0,.12);
    --sb-transition:  all .2s cubic-bezier(.4,0,.2,1);
    --sb-font:        -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
}

/* ---- Layout ---- */
.sb-wrap {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    font-family: var(--sb-font);
}

/* ---- Blog Header ---- */
.sb-hero {
    padding: 72px 0 56px;
    text-align: center;
}
.sb-hero__title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--sb-black);
    margin: 0 0 12px;
}
.sb-hero__sub {
    font-size: 1.125rem;
    color: var(--sb-gray-500);
    margin: 0;
}

/* ---- RSS link ---- */
.sb-rss-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 16px;
    font-size: 0.875rem;
    color: var(--sb-blue);
    text-decoration: none;
    font-weight: 500;
}
.sb-rss-link:hover { text-decoration: underline; }

/* ---- Grid ---- */
.sb-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    padding-bottom: 80px;
}
@media (max-width: 900px) {
    .sb-layout { grid-template-columns: 1fr; }
    .sb-sidebar { order: -1; }
}

/* ---- Post Card ---- */
.sb-post-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.sb-card {
    background: var(--sb-white);
    border: 1px solid var(--sb-gray-300);
    border-radius: var(--sb-radius);
    overflow: hidden;
    box-shadow: var(--sb-shadow);
    transition: var(--sb-transition);
    text-decoration: none;
    display: block;
    color: inherit;
}
.sb-card:hover {
    box-shadow: var(--sb-shadow-md);
    transform: translateY(-2px);
    border-color: var(--sb-gray-300);
}

.sb-card__img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
    background: var(--sb-gray-100);
}
.sb-card__img-placeholder {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, var(--sb-gray-100) 0%, var(--sb-gray-50) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}
.sb-card__img-placeholder svg { opacity: .3; }

.sb-card__body {
    padding: 24px;
}
.sb-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--sb-gray-500);
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.sb-card__cat {
    display: inline-block;
    background: var(--sb-blue-light);
    color: var(--sb-blue);
    border-radius: 20px;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    text-decoration: none;
}
.sb-card__cat:hover { background: var(--sb-blue); color: var(--sb-white); }

.sb-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sb-black);
    letter-spacing: -0.02em;
    margin: 0 0 10px;
    line-height: 1.35;
}
.sb-card__excerpt {
    color: var(--sb-gray-700);
    font-size: 0.9375rem;
    line-height: 1.65;
    margin: 0 0 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.sb-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 16px;
}
.sb-card__tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.sb-tag {
    display: inline-block;
    background: var(--sb-gray-100);
    color: var(--sb-gray-700);
    border-radius: 20px;
    padding: 2px 10px;
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    transition: var(--sb-transition);
}
.sb-tag:hover { background: var(--sb-black); color: var(--sb-white); }

.sb-card__stats {
    display: flex;
    gap: 12px;
    font-size: 0.8125rem;
    color: var(--sb-gray-500);
}
.sb-card__stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ---- Read more link ---- */
.sb-read-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--sb-blue);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}
.sb-read-more:hover { gap: 8px; }
.sb-read-more svg { transition: var(--sb-transition); }

/* ---- Pagination ---- */
.sb-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 48px;
}
.sb-pagination a,
.sb-pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--sb-gray-300);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--sb-gray-700);
    background: var(--sb-white);
    transition: var(--sb-transition);
}
.sb-pagination a:hover { border-color: var(--sb-blue); color: var(--sb-blue); }
.sb-pagination .current {
    background: var(--sb-blue);
    border-color: var(--sb-blue);
    color: var(--sb-white);
}
.sb-pagination .dots {
    border: none;
    background: none;
    color: var(--sb-gray-500);
}

/* ---- Sidebar ---- */
.sb-sidebar {
    display: flex;
    flex-direction: column;
    gap: 28px;
}
.sb-widget {
    background: var(--sb-white);
    border: 1px solid var(--sb-gray-300);
    border-radius: var(--sb-radius);
    padding: 24px;
    box-shadow: var(--sb-shadow);
}
.sb-widget__title {
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sb-gray-500);
    margin: 0 0 16px;
}
.sb-widget ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.sb-widget ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--sb-gray-100);
}
.sb-widget ul li:last-child { border-bottom: none; }
.sb-widget ul li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    color: var(--sb-gray-700);
    font-size: 0.9375rem;
    transition: var(--sb-transition);
}
.sb-widget ul li a:hover { color: var(--sb-blue); }
.sb-widget ul li a .count {
    font-size: 0.75rem;
    background: var(--sb-gray-100);
    color: var(--sb-gray-500);
    border-radius: 20px;
    padding: 2px 8px;
}
.sb-widget .sb-tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* ---- Single Post ---- */
.sb-single {
    max-width: 780px;
    margin: 0 auto;
    padding: 48px 24px 80px;
    font-family: var(--sb-font);
}
.sb-single__cover {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--sb-radius);
    margin-bottom: 40px;
    box-shadow: var(--sb-shadow-lg);
}
.sb-single__meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.875rem;
    color: var(--sb-gray-500);
    margin-bottom: 20px;
    flex-wrap: wrap;
}
.sb-single__title {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--sb-black);
    line-height: 1.2;
    margin: 0 0 20px;
}
.sb-single__excerpt {
    font-size: 1.125rem;
    color: var(--sb-gray-700);
    line-height: 1.7;
    margin-bottom: 36px;
    padding-bottom: 36px;
    border-bottom: 1px solid var(--sb-gray-300);
}

/* ---- EditorJS rendered content ---- */
.sb-content {
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--sb-gray-900);
}
.sb-content p          { margin: 0 0 1.4em; }
.sb-content h1         { font-size: 2rem;   font-weight: 800; letter-spacing: -.03em; margin: 2em 0 .6em; color: var(--sb-black); }
.sb-content h2         { font-size: 1.625rem; font-weight: 700; letter-spacing: -.025em; margin: 1.8em 0 .5em; color: var(--sb-black); }
.sb-content h3         { font-size: 1.3rem; font-weight: 700; margin: 1.6em 0 .4em; color: var(--sb-black); }
.sb-content h4,
.sb-content h5,
.sb-content h6         { font-weight: 700; margin: 1.4em 0 .4em; color: var(--sb-black); }
.sb-content ul,
.sb-content ol         { padding-left: 1.5em; margin: 0 0 1.4em; }
.sb-content li         { margin-bottom: .4em; }
.sb-content blockquote {
    margin: 2em 0;
    padding: 20px 28px;
    border-left: 4px solid var(--sb-blue);
    background: var(--sb-blue-light);
    border-radius: 0 var(--sb-radius-sm) var(--sb-radius-sm) 0;
    font-size: 1.125rem;
    font-style: italic;
    color: var(--sb-gray-700);
}
.sb-content blockquote cite {
    display: block;
    margin-top: 10px;
    font-size: .875rem;
    font-style: normal;
    font-weight: 600;
    color: var(--sb-blue);
}
.sb-content pre {
    background: var(--sb-gray-900);
    color: #e5e7eb;
    border-radius: var(--sb-radius-sm);
    padding: 20px 24px;
    overflow-x: auto;
    font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
    font-size: .875rem;
    line-height: 1.6;
    margin: 0 0 1.4em;
}
.sb-content code {
    background: var(--sb-gray-100);
    color: var(--sb-blue);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
    font-size: .875em;
}
.sb-content pre code { background: none; color: inherit; padding: 0; }
.sb-content hr.sb-delimiter {
    border: none;
    border-top: 1px solid var(--sb-gray-300);
    margin: 2.5em auto;
    max-width: 120px;
}
.sb-content figure.sb-image {
    margin: 1.5em 0;
}
.sb-content figure.sb-image img {
    width: 100%;
    border-radius: var(--sb-radius-sm);
    display: block;
}
.sb-content figure.sb-image--stretched img { width: 100%; }
.sb-content figure.sb-image--border img { border: 1px solid var(--sb-gray-300); }
.sb-content figure.sb-image--bg { background: var(--sb-gray-50); padding: 16px; }
.sb-content figcaption {
    text-align: center;
    font-size: .8125rem;
    color: var(--sb-gray-500);
    margin-top: 8px;
}
.sb-content figure.sb-embed { margin: 1.5em 0; }
.sb-content figure.sb-embed iframe {
    width: 100%;
    height: 400px;
    border-radius: var(--sb-radius-sm);
    border: none;
}
.sb-content .sb-table-wrap { overflow-x: auto; margin: 1.5em 0; }
.sb-content .sb-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9375rem;
}
.sb-content .sb-table th,
.sb-content .sb-table td {
    padding: 10px 14px;
    border: 1px solid var(--sb-gray-300);
    text-align: left;
}
.sb-content .sb-table th {
    background: var(--sb-gray-50);
    font-weight: 700;
    color: var(--sb-black);
}
.sb-content .sb-warning {
    background: #fffbeb;
    border: 1px solid #fbbf24;
    border-radius: var(--sb-radius-sm);
    padding: 16px 20px;
    margin: 1.5em 0;
}
.sb-content .sb-checklist { margin: 1.5em 0; }
.sb-content .sb-checklist__item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 8px;
    font-size: .9375rem;
}
.sb-content .sb-checklist__checkbox {
    width: 18px;
    height: 18px;
    min-width: 18px;
    border: 2px solid var(--sb-gray-300);
    border-radius: 4px;
    margin-top: 2px;
    display: inline-block;
}
.sb-content .sb-checklist__checkbox.checked {
    background: var(--sb-blue);
    border-color: var(--sb-blue);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 12 10' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 5l3.5 3.5L11 1' stroke='%23fff' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-size: 10px;
    background-repeat: no-repeat;
    background-position: center;
}

/* ---- Likes button ---- */
.sb-like-wrap {
    margin: 40px 0;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--sb-gray-50);
    border-radius: var(--sb-radius);
    border: 1px solid var(--sb-gray-300);
}
.sb-like-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--sb-white);
    border: 2px solid var(--sb-gray-300);
    border-radius: 100px;
    padding: 10px 22px;
    font-size: .9375rem;
    font-weight: 600;
    color: var(--sb-gray-700);
    cursor: pointer;
    transition: var(--sb-transition);
    font-family: var(--sb-font);
}
.sb-like-btn:hover,
.sb-like-btn.liked {
    background: var(--sb-blue);
    border-color: var(--sb-blue);
    color: var(--sb-white);
}
.sb-like-btn svg { transition: var(--sb-transition); }
.sb-like-btn.liked svg { fill: var(--sb-white); }

/* ---- Post footer ---- */
.sb-post-footer {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--sb-gray-300);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}
.sb-post-footer__tags h4 {
    font-size: .8125rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--sb-gray-500);
    margin: 0 0 10px;
}
.sb-post-footer__tags .sb-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* ---- Related posts ---- */
.sb-related {
    margin-top: 64px;
    border-top: 1px solid var(--sb-gray-300);
    padding-top: 48px;
}
.sb-related__title {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -.025em;
    color: var(--sb-black);
    margin: 0 0 28px;
}
.sb-related__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}
.sb-related__card {
    background: var(--sb-white);
    border: 1px solid var(--sb-gray-300);
    border-radius: var(--sb-radius);
    overflow: hidden;
    box-shadow: var(--sb-shadow);
    text-decoration: none;
    transition: var(--sb-transition);
    display: block;
    color: inherit;
}
.sb-related__card:hover {
    box-shadow: var(--sb-shadow-md);
    transform: translateY(-2px);
}
.sb-related__card img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    background: var(--sb-gray-100);
    display: block;
}
.sb-related__card__body {
    padding: 14px;
}
.sb-related__card__title {
    font-size: .9375rem;
    font-weight: 600;
    color: var(--sb-black);
    line-height: 1.4;
    margin: 0;
}

/* ---- Notify banner (black) ---- */
.sb-notify {
    background: var(--sb-black);
    color: var(--sb-white);
    text-align: center;
    padding: 12px 24px;
    font-size: .875rem;
    font-weight: 500;
    letter-spacing: .01em;
}

/* ---- Back link ---- */
.sb-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--sb-gray-500);
    font-size: .875rem;
    font-weight: 500;
    text-decoration: none;
    margin-bottom: 32px;
    transition: var(--sb-transition);
}
.sb-back:hover { color: var(--sb-blue); }