/* 保证铺满屏幕 */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

/* ---------- 浅色模式 ---------- */
html[data-theme="light"] {
    background: #ffffff !important;
}

html[data-theme="light"] body,
html[data-theme="light"] #web_bg,
html[data-theme="light"] #page {
    background: #ffffff !important;
}

/* ---------- 深色模式 ---------- */
html[data-theme="dark"] {
    background: #1e1e1e !important; /* VSCode 深色 */
}

html[data-theme="dark"] body,
html[data-theme="dark"] #web_bg,
html[data-theme="dark"] #page,
html[data-theme="dark"] #footer,
html[data-theme="dark"] #aside-content {
    background: #1e1e1e !important;
}

/* 卡片层次优化 */
html[data-theme="dark"] .card-widget,
html[data-theme="dark"] .recent-post-item,
html[data-theme="dark"] .layout_post {
    background: #2d2d2d !important;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(255,255,255,0.06);
}

/* hover 动效 */
.recent-post-item:hover {
    transform: translateY(-5px);
    transition: all 0.3s ease;
}


/* 壁纸加载优化 - 核心样式 */
#web_bg {
    opacity: 0;
    /* 缩短动画时长，适配快加载，同时增加延迟开始，避免闪屏 */
    transition: opacity 0.4s ease-in-out 0.1s;
    background-color: #f5f5f5;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    /* 强制硬件加速，让动画更流畅 */
    transform: translateZ(0);
  }
  
#web_bg.loaded {
    opacity: 1;
  }

/* ---------- Home hero: identity before decoration ---------- */
#page-header.full_page {
    height: min(88vh, 860px) !important;
    min-height: 650px;
}

#page-header.full_page::before {
    background: linear-gradient(110deg, rgba(7, 18, 38, 0.62), rgba(12, 34, 61, 0.34) 55%, rgba(3, 12, 25, 0.48)) !important;
}

#page-header.full_page #site-info {
    top: 48%;
    transform: translateY(-50%);
}

#page-header #site-title {
    margin-inline: auto;
    max-width: 1120px;
    font-size: clamp(2rem, 4vw, 3.75rem);
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.08;
    text-wrap: balance;
    display: block;
    overflow: visible;
    white-space: normal;
    text-shadow: 0 10px 30px rgba(0, 0, 0, 0.32);
}

.home-hero-title-line {
    display: block;
}

#page-header #site-subtitle.home-hero-role {
    margin: 1.2rem auto 0;
    max-width: 900px;
    color: rgba(255, 255, 255, 0.96);
    font-size: clamp(1rem, 1.65vw, 1.35rem);
    font-weight: 600;
    letter-spacing: -0.018em;
    line-height: 1.35;
}

.home-hero-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.8rem;
}

.home-hero-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 138px;
    padding: 0.72rem 1.1rem;
    border: 1px solid rgba(255, 255, 255, 0.46);
    border-radius: 999px;
    background: rgba(5, 16, 32, 0.2);
    color: #fff !important;
    font-size: 0.9rem;
    font-weight: 650;
    backdrop-filter: blur(10px);
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.home-hero-button:hover {
    border-color: rgba(255, 255, 255, 0.82);
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}

.home-hero-button.primary {
    border-color: #66d9ff;
    background: #2eaadc;
    box-shadow: 0 12px 30px rgba(46, 170, 220, 0.28);
}

/* ---------- Home profile and projects ---------- */
.home-profile-card,
.home-projects {
    margin-bottom: 20px;
    border: 1px solid rgba(73, 177, 245, 0.16);
    border-radius: 16px;
    background: var(--card-bg);
    box-shadow: var(--card-box-shadow);
}

.home-profile-card {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    padding: 2.1rem 2.2rem;
}

.home-profile-copy {
    max-width: 650px;
}

.section-kicker {
    color: #199dcc;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.15em;
}

.home-profile-card h2,
.home-projects h2,
.selected-writing-heading h2 {
    margin: 0.4rem 0 0;
    color: var(--text-highlight-color);
    font-size: clamp(1.45rem, 2.8vw, 2.15rem);
    font-weight: 750;
    letter-spacing: -0.035em;
    line-height: 1.18;
}

.home-profile-card p {
    margin: 0.85rem 0 0;
    color: var(--font-color);
    font-size: 0.98rem;
    line-height: 1.75;
}

.focus-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.15rem;
}

.focus-tags span {
    padding: 0.32rem 0.7rem;
    border: 1px solid rgba(73, 177, 245, 0.24);
    border-radius: 999px;
    background: rgba(73, 177, 245, 0.08);
    color: var(--font-color);
    font-size: 0.78rem;
    font-weight: 650;
}

.home-profile-link {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.55rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    background: #172033;
    color: #fff !important;
    font-size: 0.86rem;
    font-weight: 650;
    transition: transform 180ms ease, box-shadow 180ms ease;
}

.home-profile-link:hover {
    box-shadow: 0 10px 22px rgba(23, 32, 51, 0.2);
    transform: translateY(-2px);
}

.home-projects {
    padding: 2.1rem 2.2rem 2.2rem;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.4rem;
}

.section-link {
    flex: 0 0 auto;
    color: #199dcc;
    font-size: 0.84rem;
    font-weight: 650;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.85rem;
}

.project-card {
    display: flex;
    min-height: 260px;
    padding: 1.25rem;
    border: 1px solid rgba(125, 145, 170, 0.18);
    border-radius: 13px;
    background: linear-gradient(155deg, rgba(73, 177, 245, 0.09), rgba(124, 58, 237, 0.035) 48%, transparent);
    color: var(--font-color);
    flex-direction: column;
    transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.project-card:hover {
    border-color: rgba(46, 170, 220, 0.55);
    box-shadow: 0 14px 28px rgba(37, 72, 112, 0.12);
    color: var(--font-color);
    transform: translateY(-4px);
}

.project-card-top {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #199dcc;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.project-card h3 {
    margin: 1.35rem 0 0.65rem;
    color: var(--text-highlight-color);
    font-size: 1.28rem;
    letter-spacing: -0.025em;
}

.project-card p {
    margin: 0;
    font-size: 0.84rem;
    line-height: 1.62;
}

.project-arrow {
    margin-top: auto;
    padding-top: 1.2rem;
    color: #199dcc;
    font-size: 0.78rem;
    font-weight: 750;
}

.selected-writing-heading {
    padding: 1.9rem 0 1rem 0.25rem;
    scroll-margin-top: 85px;
}

#projects {
    scroll-margin-top: 85px;
}

.card-info-social-icons {
    display: none;
}

#language-toggle {
    font-size: 0.68rem !important;
    font-weight: 800;
    letter-spacing: -0.03em;
}

/* Make article cards feel intentional even when only one uses an image. */
#recent-posts .recent-post-item {
    border: 1px solid rgba(125, 145, 170, 0.12);
}

#recent-posts .recent-post-item:hover {
    border-color: rgba(73, 177, 245, 0.38);
}

html[data-theme="dark"] .home-profile-card,
html[data-theme="dark"] .home-projects,
html[data-theme="dark"] .project-card {
    border-color: rgba(102, 217, 255, 0.16);
}

html[data-theme="dark"] .project-card {
    background: linear-gradient(155deg, rgba(46, 170, 220, 0.1), rgba(124, 58, 237, 0.06) 50%, rgba(255, 255, 255, 0.015));
}

@media screen and (max-width: 1024px) {
    .project-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        min-height: 210px;
    }
}

@media screen and (max-width: 768px) {
    #page-header.full_page {
        height: 82vh !important;
        min-height: 610px;
        background-attachment: scroll !important;
    }

    #page-header.full_page #site-info {
        top: 49%;
        padding-inline: 18px;
    }

    #page-header #site-title {
        max-width: 350px;
        font-size: 2rem;
        line-height: 1.14;
        white-space: normal;
    }

    #page-header #site-subtitle.home-hero-role {
        max-width: 340px;
        font-size: 0.98rem;
    }

    .home-hero-actions {
        gap: 0.55rem;
        margin-top: 1.35rem;
    }

    .home-hero-button {
        min-width: 0;
        padding: 0.65rem 0.9rem;
        font-size: 0.8rem;
    }

    .home-profile-card {
        align-items: flex-start;
        padding: 1.55rem 1.35rem;
        flex-direction: column;
    }

    .home-projects {
        padding: 1.55rem 1.35rem;
    }

    .section-heading {
        align-items: flex-start;
        flex-direction: column;
    }

    .project-card {
        min-height: 220px;
    }

    .selected-writing-heading {
        padding: 1.5rem 0.35rem 0.8rem;
    }
}