/* =====================================================
   word.css — 全局样式 & 玻璃拟态卡片系统 v2
   ===================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text: rgba(255, 255, 255, 0.93);
    --text-muted: rgba(255, 255, 255, 0.60);
    --text-faint: rgba(255, 255, 255, 0.32);

    /* 紫→粉→青 三色强调系统 */
    --accent: #a78bfa;
    --accent-2: #f472b6;
    --accent-3: #22d3ee;
    --accent-glow: rgba(167, 139, 250, 0.22);
    --accent-glow-strong: rgba(167, 139, 250, 0.4);

    --card-bg: rgba(255, 255, 255, 0.04);
    --card-bg-hover: rgba(255, 255, 255, 0.08);
    --card-border: rgba(255, 255, 255, 0.07);
    --card-border-hover: rgba(167, 139, 250, 0.32);
    --glass-blur: 16px;

    --site-bg-start: #0d0d14;
    --site-bg-end: #13131d;

    --font-sans: "DM Sans", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;

    --shadow-card: 0 4px 24px rgba(0,0,0,0.28), 0 1px 3px rgba(0,0,0,0.18);
    --shadow-card-hover: 0 14px 44px rgba(0,0,0,0.42), 0 0 0 1px rgba(167,139,250,0.14), 0 4px 20px rgba(167,139,250,0.09);

    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 滚动条 */
html { scroll-behavior: smooth; }
html { scrollbar-width: thin; scrollbar-color: rgba(167,139,250,0.38) transparent; }
html::-webkit-scrollbar { width: 5px; }
html::-webkit-scrollbar-track { background: transparent; }
html::-webkit-scrollbar-thumb { background: rgba(167,139,250,0.38); border-radius: 99px; }
html::-webkit-scrollbar-thumb:hover { background: rgba(167,139,250,0.6); }

::selection { background: rgba(167,139,250,0.32); color: #fff; }

body {
    margin: 0; padding: 48px 20px;
    min-height: 100vh;
    background: var(--site-bg-start);
    color: var(--text);
    overflow-x: hidden; overflow-y: auto;
    position: relative;
    font-family: var(--font-sans);
    font-size: 15px; line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

.bg-blur { position: fixed; inset: 0; z-index: 1; background: rgba(13,13,20,0.38); pointer-events: none; }

.container {
    position: relative; z-index: 2;
    width: min(1200px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    align-items: start;
}

/* ========== 玻璃卡片 ========== */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition:
        background 0.35s var(--ease-smooth),
        border-color 0.35s var(--ease-smooth),
        box-shadow 0.35s var(--ease-smooth),
        transform 0.35s var(--ease-spring);
    position: relative; overflow: hidden;
    color: var(--text);
}

/* 顶部光泽 */
.card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(167,139,250,0.55) 30%, rgba(244,114,182,0.35) 70%, transparent 100%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.card:hover {
    background: var(--card-bg-hover);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px) scale(1.005);
}
.card:hover::before { opacity: 1; }

/* ========== 左侧栏 ========== */
.sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 24px; }

.avatar-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    border: 1px solid var(--card-border);
    padding: 20px;
    box-shadow: var(--shadow-card);
    transition: all 0.35s var(--ease-smooth);
    position: relative; overflow: hidden;
}
.avatar-card::before {
    content: ""; position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(167,139,250,0.5), transparent);
}
.avatar-card:hover {
    border-color: rgba(167,139,250,0.3);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

.avatar {
    width: 80px; height: 80px; margin: 0 auto 12px;
    border-radius: 50%; overflow: hidden;
    border: 2px solid rgba(167,139,250,0.4);
    box-shadow: 0 0 20px rgba(167,139,250,0.22);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.avatar:hover { border-color: rgba(167,139,250,0.8); box-shadow: 0 0 32px rgba(167,139,250,0.38); }

.avatar-placeholder {
    width: 100%; height: 100%;
    background: linear-gradient(135deg, #252535, #3a3860);
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; color: rgba(255,255,255,0.28);
}

/* ========== 主内容 ========== */
.main-content { display: flex; flex-direction: column; gap: 20px; }

.title-card {
    background: linear-gradient(135deg, rgba(167,139,250,0.09) 0%, rgba(244,114,182,0.04) 100%);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(167,139,250,0.14);
    padding: 32px 28px;
    box-shadow: var(--shadow-card);
    position: relative; overflow: hidden;
    transition: all 0.35s var(--ease-smooth);
}
.title-card::before {
    content: ""; position: absolute;
    top: -60%; left: -60%; width: 220%; height: 220%;
    background: radial-gradient(circle at 30% 50%, rgba(167,139,250,0.07) 0%, transparent 55%);
    pointer-events: none;
}
.title-card:hover {
    border-color: rgba(167,139,250,0.28);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

.title-wrap {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; margin: 0;
}
.title-prefix {
    display: block; font-size: 0.45em; font-weight: 500;
    color: var(--text-muted); letter-spacing: 0.05em; margin-bottom: 4px;
}
.title {
    background: linear-gradient(135deg, #a78bfa 0%, #f472b6 50%, #22d3ee 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradShift 7s ease infinite;
}
@keyframes gradShift {
    0%,100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.subtitle-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    padding: 18px 24px;
    box-shadow: var(--shadow-card);
    transition: all 0.35s var(--ease-smooth);
}
.subtitle-card:hover { border-color: var(--card-border-hover); }

.subtitle-wrap {
    font-size: clamp(0.88rem, 2vw, 1rem); font-weight: 400;
    color: var(--text-muted); line-height: 1.55;
    display: flex; flex-wrap: wrap; gap: 6px; align-items: center;
}
.subtitle-prefix { opacity: 0.65; }
.subtitle-name {
    font-weight: 600;
    background: linear-gradient(135deg, rgba(167,139,250,0.85), rgba(244,114,182,0.85));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 像素横幅 */
.pixel-banner {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--card-border);
    transition: border-color 0.3s ease;
}
.pixel-banner:hover { border-color: rgba(167,139,250,0.22); }
.pixel-active {
    border-radius: 1px;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

/* 内容卡片 */
.intro-card, .skills-card, .posts-card, .projects-card, .contact-card {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(160%);
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
    padding: 24px;
    box-shadow: var(--shadow-card);
    transition:
        background 0.35s var(--ease-smooth),
        border-color 0.35s var(--ease-smooth),
        box-shadow 0.35s var(--ease-smooth),
        transform 0.35s var(--ease-spring);
}
.intro-card:hover, .skills-card:hover, .posts-card:hover,
.projects-card:hover, .contact-card:hover {
    background: var(--card-bg-hover);
    border-color: var(--card-border-hover);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px) scale(1.003);
}

.section-title {
    font-size: 1.05rem; font-weight: 700; color: var(--text);
    margin-bottom: 16px; padding-bottom: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    letter-spacing: 0.02em;
    display: flex; align-items: center; gap: 8px;
}
.section-title::before {
    content: ""; width: 3px; height: 1em;
    background: linear-gradient(180deg, var(--accent), var(--accent-2));
    border-radius: 2px; flex-shrink: 0;
}

/* 技能标签 */
.skills-grid { display: flex; flex-wrap: wrap; gap: 10px; }

.skill-tag {
    display: inline-flex; align-items: center;
    padding: 6px 14px;
    background: rgba(167,139,250,0.09);
    border: 1px solid rgba(167,139,250,0.18);
    border-radius: 99px;
    font-size: 0.82rem; font-weight: 500;
    color: rgba(167,139,250,0.88);
    cursor: default;
    transition: all 0.25s var(--ease-smooth);
    position: relative; overflow: hidden;
}
.skill-tag::before {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(167,139,250,0.14), rgba(244,114,182,0.08));
    opacity: 0; transition: opacity 0.25s ease;
}
.skill-tag:hover {
    background: rgba(167,139,250,0.17);
    border-color: rgba(167,139,250,0.38);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 16px rgba(167,139,250,0.24);
    color: #fff;
}
.skill-tag:hover::before { opacity: 1; }

/* 项目网格 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.project-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 18px;
    text-decoration: none; color: inherit;
    cursor: pointer;
    display: flex; flex-direction: column; gap: 8px;
    transition: all 0.3s var(--ease-smooth);
    position: relative; overflow: hidden;
}
.project-item::before {
    content: ""; position: absolute;
    top: 0; left: 0; right: 0; height: 1px;
    background: linear-gradient(90deg, transparent, rgba(167,139,250,0.5), transparent);
    opacity: 0; transition: opacity 0.3s ease;
}
.project-item:hover {
    background: rgba(167,139,250,0.07);
    border-color: rgba(167,139,250,0.22);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.28), 0 0 0 1px rgba(167,139,250,0.09);
}
.project-item:hover::before { opacity: 1; }

.project-icon {
    width: 40px; height: 40px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, rgba(167,139,250,0.14), rgba(244,114,182,0.09));
    border: 1px solid rgba(167,139,250,0.18);
    display: flex; align-items: center; justify-content: center;
    transition: all 0.3s ease;
}
.project-item:hover .project-icon {
    background: linear-gradient(135deg, rgba(167,139,250,0.24), rgba(244,114,182,0.18));
    box-shadow: 0 0 16px rgba(167,139,250,0.28);
}
.project-icon svg { width: 22px; height: 22px; stroke: var(--accent); fill: none; stroke-width: 1.5; }
.project-title { font-size: 0.95rem; font-weight: 700; color: var(--text); }
.project-desc { font-size: 0.8rem; color: var(--text-muted); line-height: 1.5; }

/* 帖子网格 */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.post-item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-md);
    padding: 18px; cursor: pointer;
    display: flex; flex-direction: column; gap: 8px;
    text-decoration: none; color: inherit;
    transition: all 0.3s var(--ease-smooth);
    position: relative; overflow: hidden;
}
.post-item::before {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(167,139,250,0.05), rgba(244,114,182,0.03));
    opacity: 0; transition: opacity 0.3s ease;
}
.post-item:hover {
    background: rgba(167,139,250,0.07);
    border-color: rgba(167,139,250,0.2);
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
}
.post-item:hover::before { opacity: 1; }
.post-title {
    font-size: 0.95rem; font-weight: 700; color: var(--text); line-height: 1.4;
    transition: color 0.25s ease;
}
.post-item:hover .post-title { color: var(--accent); }

/* 公告栏 */
.announcement-bar {
    background: linear-gradient(90deg, rgba(167,139,250,0.11) 0%, rgba(244,114,182,0.07) 50%, rgba(34,211,238,0.05) 100%);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid rgba(167,139,250,0.18);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 12px 18px;
    font-size: 0.875rem; color: var(--text-muted);
    text-decoration: none; display: block;
    transition: all 0.3s ease;
    overflow: hidden; position: relative;
}
.announcement-bar::after {
    content: "最新"; position: absolute;
    right: 14px; top: 50%; transform: translateY(-50%);
    font-size: 0.68rem; font-weight: 700;
    color: var(--accent); letter-spacing: 0.06em;
    text-transform: uppercase; opacity: 0.65;
}
.announcement-bar:hover {
    background: linear-gradient(90deg, rgba(167,139,250,0.17) 0%, rgba(244,114,182,0.11) 100%);
    border-color: rgba(167,139,250,0.32);
    color: var(--text);
    transform: translateX(3px);
}

.mobile-avatar-card { display: none; }

/* ========== 响应式 ========== */
@media (max-width: 900px) {
    .container { grid-template-columns: 1fr; gap: 16px; }
    .sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
    .avatar-card { grid-column: 1 / -1; display: flex; align-items: center; gap: 16px; padding: 16px; }
    .avatar { width: 56px; height: 56px; margin: 0; flex-shrink: 0; }
    .mobile-avatar-card { display: none !important; }
}
@media (max-width: 600px) {
    body { padding: 20px 14px 80px; }
    .sidebar { grid-template-columns: 1fr; }
    .card { padding: 18px; }
    .title-card { padding: 22px 18px; }
    .projects-grid, .posts-grid { grid-template-columns: 1fr; }
}

/* ========== 滚动渐入 ========== */
.fade-in {
    opacity: 0; transform: translateY(18px);
    transition: opacity 0.65s var(--ease-out), transform 0.65s var(--ease-out);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
    .fade-in { opacity: 1; transform: none; transition: none; }
    .card, .project-item, .post-item, .skill-tag, .title-card, .subtitle-card { transition: none; }
    .title { animation: none; background-position: 0% 50%; }
}