/* ===== CSS Variables ===== */
:root {
    --bg: hsl(40, 30%, 98%);
    --surface: #fff;
    --ink: hsl(222, 30%, 14%);
    --text: hsl(222, 20%, 20%);
    --text-muted: hsl(222, 10%, 46%);
    --primary: hsl(18, 78%, 52%);
    --primary-soft: hsl(18, 80%, 96%);
    --border: hsl(40, 14%, 88%);
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Helvetica, Arial, sans-serif;
    --font-serif: "Noto Serif SC", Georgia, "Songti SC", "Times New Roman", serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 920px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container { padding: 0 24px; }
}

/* ===== Site Header ===== */
.site-header {
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 26px;
    padding-bottom: 26px;
}

.site-logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.08em;
    font-family: var(--font-serif);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
    list-style: none;
}

.nav-menu a {
    position: relative;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    letter-spacing: 0.05em;
    padding: 4px 0;
    transition: color 0.2s ease;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.25s ease;
}

.nav-menu a:hover,
.nav-menu .current-menu-item > a,
.nav-menu a.active { color: var(--ink); }

.nav-menu a:hover::after,
.nav-menu .current-menu-item > a::after,
.nav-menu a.active::after { width: 100%; }

/* ===== Hero Banner ===== */
.hero-banner {
    position: relative;
    margin-top: 40px;
    min-height: 420px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    overflow: hidden;
    isolation: isolate;
    color: #fff;
    border-radius: 24px;
    box-shadow: 0 30px 60px -20px hsla(222, 45%, 20%, 0.35);
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    animation: heroZoom 18s ease-out forwards;
}

@keyframes heroZoom {
    to { transform: scale(1); }
}

/* Overlay for the hero banner background */
.hero-overlay-inner {
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(180deg, hsla(222, 45%, 8%, 0.15) 0%, hsla(222, 45%, 8%, 0.35) 45%, hsla(222, 45%, 10%, 0.82) 100%),
        radial-gradient(ellipse 70% 60% at 75% 20%, hsla(18, 80%, 55%, 0.2) 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 10;
    padding: 0 44px 44px;
    max-width: 640px;
}

.hero-label {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 22px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.hero-label::before {
    content: '';
    width: 38px;
    height: 1px;
    background: var(--primary);
    flex-shrink: 0;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.08;
    color: #fff;
    font-family: var(--font-serif);
    text-shadow: 0 2px 30px rgba(0,0,0,0.25);
}

.hero-desc {
    margin-top: 26px;
    max-width: 520px;
    font-size: 1.05rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.82);
}

.hero-cta {
    margin-top: 44px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 15px 30px;
    background: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 999px;
    color: #fff;
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-decoration: none;
    box-shadow: 0 10px 30px hsla(18, 78%, 40%, 0.4);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
    width: fit-content;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 40px hsla(18, 78%, 40%, 0.5);
}

.hero-cta svg { transition: transform 0.2s ease; }
.hero-cta:hover svg { transform: translateX(4px); }

/* ===== Articles Section ===== */
.section-wrap {
    background-color: var(--bg);
    padding: 80px 24px 96px;
}

.content-area {
    max-width: 920px;
    margin: 0 auto;
}

.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 12px;
    padding-bottom: 22px;
    border-bottom: 1px solid var(--border);
}

.section-eyebrow {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 10px;
}

.section-title {
    font-size: 1.9rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--ink);
    font-family: var(--font-serif);
}

.section-count {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Article Item */
.article-item {
    display: grid;
    grid-template-columns: 88px 1fr;
    gap: 28px;
    padding: 34px 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.article-item:last-child { border-bottom: none; }

.article-index {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-muted);
    padding-top: 4px;
    letter-spacing: 0.04em;
    transition: color 0.2s ease;
}

.article-item:hover .article-index { color: var(--primary); }

.article-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.article-category {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 4px 10px;
    border-radius: 999px;
    text-decoration: none;
}

.article-date,
.article-readtime {
    font-size: 0.78rem;
    color: var(--text-muted);
}
.article-readtime { margin-left: auto; }

.article-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 10px;
    line-height: 1.35;
    font-family: var(--font-serif);
    transition: color 0.2s ease;
}

.article-title a {
    text-decoration: none;
    color: inherit;
}

.article-item:hover .article-title { color: var(--primary); }

.article-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-muted);
}

.article-action {
    margin-top: 16px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.article-item:hover .article-action {
    opacity: 1;
    transform: translateX(0);
}

/* ===== Pagination ===== */
.pagination {
    margin-top: 56px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-info { font-size: 0.78rem; color: var(--text-muted); }
.page-controls { display: flex; align-items: center; gap: 6px; }

.page-controls ul {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}

.page-btn {
    display: flex; align-items: center; justify-content: center;
    min-width: 40px; height: 40px;
    font-size: 0.9rem; font-weight: 600;
    background: none;
    border: 1px solid transparent;
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-muted);
    font-family: var(--font-sans);
    text-decoration: none;
    transition: all 0.15s ease;
    padding: 0 4px;
}

.page-btn:hover:not(.page-btn-active) {
    border-color: var(--border);
    color: var(--ink);
}

.page-btn-active {
    background-color: var(--primary) !important;
    color: #fff !important;
    border-color: var(--primary) !important;
}

.page-arrow {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    color: var(--ink);
    text-decoration: none;
    transition: all 0.15s ease;
}

.page-arrow:hover { border-color: var(--primary); color: var(--primary); }

.page-controls .page-arrow.disabled,
.page-controls .page-arrow:has(svg) { /* handled by HTML */ }

.page-spacer { width: 90px; }

/* Disabled state */
.page-btn.disabled,
.page-arrow.disabled,
a.page-arrow[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* ===== Single Post ===== */
.single-wrap {
    background-color: var(--bg);
    padding: 60px 24px 80px;
    min-height: calc(100vh - 200px);
}

.single-container {
    max-width: 780px;
    margin: 0 auto;
}

.single-header {
    padding-bottom: 28px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.single-category {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 4px 10px;
    border-radius: 999px;
    text-decoration: none;
    margin-bottom: 18px;
    transition: background 0.2s;
}

.single-category:hover {
    background: hsla(18, 80%, 52%, 0.2);
}

.single-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--ink);
    line-height: 1.25;
    font-family: var(--font-serif);
}

@media (min-width: 768px) {
    .single-title { font-size: 2.4rem; }
}

.single-meta {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.single-dot {
    color: var(--border);
    font-weight: 300;
}

.single-thumbnail {
    margin-bottom: 36px;
    border-radius: 16px;
    overflow: hidden;
}

.single-thumbnail img {
    width: 100%;
    height: auto;
    display: block;
}

/* Single content — WordPress block styles */
.single-content {
    font-size: 1.05rem;
    line-height: 1.9;
    color: var(--text);
    font-family: var(--font-sans);
}

.single-content h2,
.single-content h3,
.single-content h4 {
    font-family: var(--font-serif);
    color: var(--ink);
    margin: 2.2rem 0 1rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.single-content h2 { font-size: 1.6rem; }
.single-content h3 { font-size: 1.3rem; }

.single-content p {
    margin-bottom: 1.25rem;
}

.single-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.single-content a:hover {
    color: hsl(18, 70%, 45%);
}

.single-content img {
    border-radius: 12px;
    margin: 1.5rem 0;
    max-width: 100%;
    height: auto;
}

.single-content blockquote {
    border-left: 3px solid var(--primary);
    padding: 1.2rem 1.5rem;
    margin: 1.8rem 0;
    background: var(--primary-soft);
    border-radius: 0 12px 12px 0;
    color: var(--text);
    font-style: italic;
}

.single-content ul,
.single-content ol {
    padding-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.single-content li {
    margin-bottom: 0.5rem;
}

.single-content pre {
    background: #f5f0eb;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.85rem;
    line-height: 1.6;
}

.single-content code {
    font-size: 0.85em;
    background: var(--primary-soft);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
}

.single-content pre code {
    background: none;
    padding: 0;
}

/* Tags */
.single-tags {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-link {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: 999px;
    transition: all 0.2s;
}

.tag-link:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--primary-soft);
}

/* Post navigation */
.single-nav {
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.single-nav-link {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-decoration: none;
    padding: 16px 20px;
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: border-color 0.2s, background 0.2s;
}

.single-nav-link:hover {
    border-color: var(--primary);
    background: var(--primary-soft);
}

.single-nav-link.next {
    text-align: right;
    grid-column: 2;
}

.single-nav-link:only-child {
    grid-column: 1 / -1;
}

.single-nav-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.single-nav-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--ink);
    font-family: var(--font-serif);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Footer ===== */
.site-footer {
    border-top: 1px solid var(--border);
    background: var(--bg);
    padding: 2.5rem 0;
}

.footer-inner {
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-copy {
    font-size: 0.78rem;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

/* ===== About Page ===== */
.about-page .single-content {
    font-size: 1.05rem;
    line-height: 1.9;
}

/* ===== Blog empty ===== */
.blog-empty {
    padding: 4rem 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== Responsive ===== */
@media (max-width: 767px) {
    .nav-menu { gap: 22px; }
    .site-logo { font-size: 1.2rem; }

    .hero-banner {
        min-height: 360px;
        margin-top: 28px;
        border-radius: 18px;
    }
    .hero-content { padding: 0 26px 30px; }
    .hero-desc { font-size: 0.95rem; }

    .section-wrap { padding: 56px 22px; }
    .section-title { font-size: 1.5rem; }
    .article-item { grid-template-columns: 1fr; gap: 6px; }
    .article-index { padding-top: 0; font-size: 0.85rem; }
    .article-title { font-size: 1.2rem; }
    .article-readtime { display: none; }

    .single-title { font-size: 1.6rem; }
    .single-wrap { padding: 40px 22px 60px; }

    .pagination { flex-wrap: wrap; gap: 16px; justify-content: center; }
    .page-spacer { display: none; }
    .page-info { width: 100%; text-align: center; }

    .single-nav { grid-template-columns: 1fr; }
    .single-nav-link.next { grid-column: 1; text-align: left; }
}