/* ===== 基础重置 ===== */
/* 配色、圆角、间距等设计令牌统一由 assets/css/tokens.css 提供 */

/* 平滑的主题切换动画：仅在切换瞬间启用全局过渡，避免给每个元素常驻 transition 声明 */
body {
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.theme-switching,
body.theme-switching * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-xl) 0;
}

.section-title {
    font-size: 1.65rem;
    font-weight: 650;
    letter-spacing: -0.015em;
    margin-bottom: var(--space-sm);
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.section-subtitle {
    font-size: 0.98rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    max-width: 620px;
}

/* ===== 导航栏样式 ===== */
.navbar {
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--color-card) 94%, transparent) 0%,
        color-mix(in srgb, var(--color-card) 72%, transparent) 100%);
    backdrop-filter: blur(14px) saturate(1.5);
    -webkit-backdrop-filter: blur(14px) saturate(1.5);
    border-bottom: 1px solid var(--color-border);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

/* 夜间模式切换按钮 */
.theme-toggle {
    background-color: var(--color-primary);
    border: none;
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.8rem 1rem;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    margin-left: 0.8rem;
    box-shadow: var(--shadow-md);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.1);
}

/* 主题切换动画效果 */
.theme-toggle i {
    transition: transform 0.3s ease, color 0.3s ease;
    z-index: 2;
    position: relative;
}

body.dark .theme-toggle {
    background-color: var(--color-secondary);
}

body.dark .theme-toggle i {
    color: #FFFFFF;
}

/* 移动端主题切换按钮样式 */
.nav-mobile .theme-toggle {
    width: 100%;
    justify-content: flex-start;
    gap: var(--space-sm);
    margin-left: 0;
    padding: var(--space-sm);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--color-text-dark);
    font-weight: 600;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.nav-brand:hover {
    color: var(--color-primary);
}

.nav-icon {
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    gap: 0.6rem; /* 缩小图标间距 */
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem; /* 稍微减小字体 */
    transition: all 0.3s ease;
    padding: 0.6rem 0.5rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

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

/* 主导航与社交链接之间的分隔 */
.nav-divider {
    width: 1px;
    height: 18px;
    margin: 0 4px;
    background-color: var(--color-border);
    flex: none;
}

.nav-external {
    position: relative;
}

.nav-external::after {
    content: "↗";
    font-size: 0.7rem;
    margin-left: 4px;
    opacity: 0.7;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
}
/* 移动端下拉菜单 */
.nav-mobile {
    display: none;
    flex-direction: column;
    padding: var(--space-md);
    background-color: var(--color-card);
    border-top: 1px solid var(--color-border);
}

.nav-mobile-link {
    color: var(--color-text);
    text-decoration: none;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-mobile-link:hover {
    color: var(--color-primary);
    background-color: var(--color-hover);
}

/* ===== Hero 区域：独占首屏，带纵深渐变 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 0 96px;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--color-border);
    background:
        radial-gradient(900px 480px at 50% -12%, var(--color-primary-soft) 0%, transparent 62%),
        linear-gradient(180deg, var(--color-card) 0%, var(--color-bg) 46%, var(--color-bg-subtle) 100%);
}

/* 柔和光晕：不旋转、不抢焦点，只给首屏一点纵深 */
.hero::before,
.hero::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-primary-soft) 0%, transparent 68%);
    opacity: 0.75;
    pointer-events: none;
}

.hero::before {
    width: 520px;
    height: 520px;
    top: -190px;
    left: -130px;
}

.hero::after {
    width: 420px;
    height: 420px;
    bottom: -170px;
    right: -110px;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 760px;
    padding: 0 var(--space-md);
}

.hero-title {
    font-size: 3.6rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: var(--space-sm);
    line-height: 1.12;
    background: var(--hero-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.01em;
}

.hero-scroll {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-text-light);
    animation: bounce 2s infinite;
    cursor: pointer;
    transition: color 0.3s ease;
}

.hero-scroll:hover {
    color: var(--color-primary);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-4px); }
    60% { transform: translateY(-2px); }
}

/* ===== 我的作品区域 ===== */
.works-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: var(--space-sm);
}

.work-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-height: 164px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-decoration: none;
    color: inherit;
}

.work-card:active {
    transform: translateY(-4px) scale(0.98);
}

.work-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 40%, rgba(44, 74, 110, 0.06) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.work-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.work-card:hover::before {
    opacity: 1;
}

.work-card:hover .work-icon {
    transform: translateY(-2px);
    color: var(--color-primary);
}

.work-icon {
    font-size: 2rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-sm);
    transition: all 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.work-title {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: var(--space-xs);
    position: relative;
    z-index: 2;
}

.work-desc {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.5;
    position: relative;
    z-index: 2;
    margin-bottom: 1.5rem; /* 增加底部间距，避免与hover文字重叠 */
}

.work-hover {
    position: absolute;
    bottom: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    color: var(--color-primary);
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
    text-align: right;
    z-index: 2;
}

.work-card:hover .work-hover {
    opacity: 1;
    transform: translateY(0);
}

/* ===== 常用工具区域 ===== */
.tools-section {
    background: linear-gradient(to bottom, transparent, var(--color-bg));
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-top: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.tool-card {
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 152px;
}

.tool-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-sm);
}

.tool-icon {
    font-size: 1.6rem;
    color: var(--color-primary);
}

.tool-badge {
    background-color: var(--color-accent);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 20px;
}

.tool-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: var(--space-xs);
}

.tool-desc {
    color: var(--color-text-light);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.tool-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.tool-tag {
    background-color: var(--color-hover);
    color: var(--color-primary);
    font-size: 0.8rem;
    padding: 4px 10px;
    border-radius: 20px;
}

.tool-arrow {
    color: var(--color-primary);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.tool-card:hover .tool-arrow {
    transform: translateX(5px);
}

/* ===== 底部栏 ===== */
.footer {
    background-color: var(--color-card);
    border-top: 1px solid var(--color-border);
    padding: var(--space-md) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-right {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--space-md);
}

.footer-time {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
}

.footer-time i {
    color: var(--color-primary);
    font-size: 1.1rem;
}

.footer-info {
    text-align: left;
    color: var(--color-text-light);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;
}

.footer-info p {
    margin: 0;
}

.footer-icon {
    font-size: 1.5rem;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 3rem;
    }

    .nav-menu {
        gap: 0.5rem;
    }

    .nav-link {
        font-size: 0.9rem;
        padding: 0.5rem 0.7rem;
    }
}

@media (max-width: 900px) {
    .nav-menu {
        gap: 0.4rem;
    }
    
    .nav-link {
        font-size: 0.85rem;
        padding: 0.4rem 0.6rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .nav-mobile.active {
        display: flex;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .works-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .work-card {
        min-height: 170px;
    }

    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--space-lg);
    }
    
    .footer-info {
        text-align: center;
        align-items: center;
    }
    
    .footer-time, .footer-info {
        padding: 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-sm);
    }
    
    .hero-title {
        font-size: 1.9rem;
    }
    
    .section {
        padding: var(--space-lg) 0;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .work-card {
        padding: var(--space-sm);
        min-height: 160px;
    }

    .works-grid {
        grid-template-columns: 1fr;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .work-title {
        font-size: 1.2rem;
    }

    .tool-title {
        font-size: 1.1rem;
    }

    .tool-icon {
        font-size: 1.3rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .section-subtitle {
        font-size: 0.95rem;
    }
}

/* ===== 微信图片灯箱 ===== */
.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox-overlay.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    background: var(--color-card);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    cursor: default;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.lightbox-overlay.active .lightbox-content {
    transform: scale(1);
}

.lightbox-img {
    display: block;
    width: 100%;
    max-width: 100%;
    max-height: min(56vh, 520px);
    object-fit: contain;
    border-radius: var(--radius-sm);
    margin: 0 auto var(--space-sm);
}

.lightbox-hint {
    color: var(--color-text-light);
    font-size: 0.9rem;
}
/* ===== 自定义光标（圆环 + 中心点） ===== */
/* 仅在有精确指针的设备上启用；触摸设备保持系统默认行为 */
@media (hover: hover) and (pointer: fine) {
    body.custom-cursor,
    body.custom-cursor * {
        cursor: none !important;
    }
}

.cursor-dot,
.cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.25s ease;
    will-change: transform;
}

.cursor-dot {
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
}

.cursor-ring {
    width: 42px;
    height: 42px;
    border: 1.5px solid var(--color-primary);
    transition: width 0.22s ease, height 0.22s ease, border-radius 0.22s ease,
        background-color 0.22s ease, border-color 0.22s ease, opacity 0.25s ease;
}

/* 悬停在可交互元素上：圆环放大并填充 */
body.cursor-hover .cursor-ring {
    width: 68px;
    height: 68px;
    background-color: rgba(44, 74, 110, 0.1);
    border-color: rgba(44, 74, 110, 0.5);
}

/* 按下时收缩 */
body.cursor-down .cursor-ring {
    width: 30px;
    height: 30px;
    background-color: rgba(44, 74, 110, 0.18);
}

/* 夜间模式下跟随主色 */
body.dark .cursor-dot {
    background-color: var(--color-secondary);
}

body.dark .cursor-ring {
    border-color: var(--color-secondary);
}

body.dark.cursor-hover .cursor-ring {
    background-color: rgba(168, 196, 220, 0.14);
    border-color: rgba(168, 196, 220, 0.6);
}

/* 尊重「减少动态效果」偏好：不启用自定义光标 */
@media (prefers-reduced-motion: reduce) {
    body.custom-cursor,
    body.custom-cursor * {
        cursor: auto !important;
    }

    .cursor-dot,
    .cursor-ring {
        display: none;
    }
}

/* ===== 个性化设置面板 ===== */
.theme-panel {
    position: fixed;
    top: 72px;
    right: max(1rem, calc((100vw - 1200px) / 2 + 1.5rem));
    z-index: 1200;
    width: 272px;
    padding: 16px;
    background-color: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
}

.theme-panel.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.theme-panel__section + .theme-panel__section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.theme-panel__label {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    color: var(--color-text-muted);
    margin-bottom: 10px;
}

.theme-modes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.theme-mode {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 4px;
    font-size: 0.78rem;
    color: var(--color-text-light);
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.theme-mode i {
    font-size: 0.95rem;
}

.theme-mode:hover {
    color: var(--color-text);
    border-color: var(--color-border-strong);
}

.theme-mode[aria-checked="true"] {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-soft);
}

.theme-accents {
    display: flex;
    gap: 10px;
}

.theme-accent {
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    background: none;
    cursor: pointer;
    border-radius: 50%;
    display: grid;
    place-items: center;
}

.theme-accent span {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--swatch);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.theme-accent:hover span {
    transform: scale(1.12);
}

.theme-accent[aria-checked="true"] span {
    box-shadow: 0 0 0 2px var(--color-card), 0 0 0 4px var(--swatch);
}

.theme-panel__hint {
    margin-top: 14px;
    font-size: 0.72rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* ---- 色相滑块 ---- */
.hue-slider {
    width: 100%;
    height: 10px;
    -webkit-appearance: none;
    appearance: none;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    outline: none;
    cursor: pointer;
    background: linear-gradient(90deg,
        hsl(0 72% 52%), hsl(30 72% 52%), hsl(60 72% 52%), hsl(90 72% 52%),
        hsl(120 72% 52%), hsl(150 72% 52%), hsl(180 72% 52%), hsl(210 72% 52%),
        hsl(240 72% 52%), hsl(270 72% 52%), hsl(300 72% 52%), hsl(330 72% 52%),
        hsl(360 72% 52%));
}

.hue-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #FFFFFF;
    border: 2px solid var(--color-border-strong);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
    cursor: grab;
    transition: transform 0.12s ease;
}

.hue-slider::-webkit-slider-thumb:active {
    transform: scale(1.12);
}

.hue-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #FFFFFF;
    border: 2px solid var(--color-border-strong);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.18);
    cursor: grab;
}

.hue-slider__meta {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    font-size: 0.72rem;
    color: var(--color-text-muted);
}

@media (max-width: 768px) {
    .theme-panel {
        top: auto;
        bottom: 16px;
        left: 16px;
        right: 16px;
        width: auto;
    }
}

/* ===== 浅色层次：靠底色分层与主色点缀建立节奏，而不是靠渐变与发光 ===== */
.tools-section {
    background-color: var(--color-bg-subtle);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

/* 作品图标加一层柔和底，让卡片有色彩锚点 */
.work-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    transition: color 0.2s ease, background-color 0.2s ease;
}

.work-card:hover .work-icon {
    background-color: var(--color-primary);
    color: #FFFFFF;
    transform: none;
}

/* 工具卡图标同样处理 */
.tool-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 1.1rem;
}

/* 分区标题的图标用主色，形成视觉锚点 */
.section-title i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 1rem;
}

/* 标签跟随主题色 */
.tool-tag {
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    font-weight: 600;
}

.tool-badge {
    background-color: var(--color-accent);
}

/* 导航当前项用主色下划线，替代整块背景 */
.nav-link.active {
    color: var(--color-primary) !important;
    background-color: transparent !important;
}