/**
 * 密钥博客 - 暗色极简密码学风格
 * Author: Lighter (zhenith)
 * Theme: 深邃的黑夜 · 加密的艺术
 */

/* ==================== 变量定义 ==================== */
:root {
    /* 色彩系统 */
    --bg-primary: #0a0a0f;
    --bg-secondary: #0f0f18;
    --bg-tertiary: #14141f;
    --bg-card: #1a1a28;
    --bg-hover: #22223a;
    --bg-primary-rgb: 10, 10, 15;
    
    /* 强调色 */
    --accent-primary: #00ff88;
    --accent-secondary: #7b8cde;
    --accent-tertiary: #bd93f9;
    --accent-warning: #ffb86c;
    --accent-error: #ff5555;
    --accent-success: #50fa7b;

    /* 强调色 RGB（用于 rgba() 组合） */
    --accent-primary-rgb: 0, 255, 136;
    --accent-secondary-rgb: 123, 140, 222;
    --accent-tertiary-rgb: 189, 147, 249;
    --accent-warning-rgb: 255, 184, 108;
    --accent-error-rgb: 255, 85, 85;
    --accent-success-rgb: 80, 250, 123;
    
    /* 文字色 */
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #606080;
    --text-dim: #404060;
    
    /* 边框 */
    --border-subtle: rgba(var(--accent-primary-rgb), 0.08);
    --border-accent: rgba(var(--accent-primary-rgb), 0.2);

    /* 阴影 */
    --shadow-glow: 0 0 30px rgba(var(--accent-primary-rgb), 0.1);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
    
    /* 字体 */
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --font-serif: 'Noto Serif SC', 'Source Han Serif CN', serif;
    
    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==================== 浅色主题 ==================== */
:root[data-theme="light"] {
    --bg-primary: #f5f5f8;
    --bg-secondary: #eeeef2;
    --bg-tertiary: #e6e6ec;
    --bg-primary-rgb: 245, 245, 248;
    --bg-card: #ffffff;
    --bg-hover: #dddde4;
    
    --accent-primary: #00b35c;
    --accent-secondary: #4a5a9e;
    --accent-tertiary: #7c3aed;
    --accent-warning: #c47a20;
    --accent-error: #cc3333;
    --accent-success: #2d9e50;

    --accent-primary-rgb: 0, 179, 92;
    --accent-secondary-rgb: 74, 90, 158;
    --accent-tertiary-rgb: 124, 58, 237;
    --accent-warning-rgb: 196, 122, 32;
    --accent-error-rgb: 204, 51, 51;
    --accent-success-rgb: 45, 158, 80;
    
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a68;
    --text-muted: #8888a0;
    --text-dim: #aaaac0;
    
    --border-subtle: rgba(var(--accent-primary-rgb), 0.12);
    --border-accent: rgba(var(--accent-primary-rgb), 0.25);

    --shadow-glow: 0 0 30px rgba(var(--accent-primary-rgb), 0.08);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* 浅色主题下的二进制背景 */
:root[data-theme="light"] .binary-bg {
    opacity: 0.5;
}

/* 浅色主题下的凯撒轮 */
:root[data-theme="light"] .caesar-wheel {
    opacity: 0.55;
}
:root[data-theme="light"] .caesar-wheel svg circle {
    stroke: rgba(var(--accent-primary-rgb), 0.2);
}
:root[data-theme="light"] .caesar-wheel svg text {
    fill: rgba(var(--accent-primary-rgb), 0.35);
}

/* 浅色主题下的代码块 */
:root[data-theme="light"] .article-content pre,
:root[data-theme="light"] .article-content code {
    background: #e8e8f0;
    color: #1a1a2e;
    border-color: rgba(0, 0, 0, 0.08);
}
:root[data-theme="light"] .article-content strong,
:root[data-theme="light"] .article-content b {
    color: #b86a00;
}
:root[data-theme="light"] .article-content img {
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

/* 浅色主题下的终端 */
:root[data-theme="light"] .terminal-header {
    background: #dddde4;
}
:root[data-theme="light"] .entrance-content {
    background: #ffffff;
    border-color: var(--border-subtle);
}

/* 浅色主题下的文章检索页 */
:root[data-theme="light"] .search-box {
    background: #f5f5f5;
    border-color: #ddd;
    color: #333;
}

:root[data-theme="light"] .article-row:hover {
    background: #f0f0f0;
}

:root[data-theme="light"] .article-row {
    border-bottom-color: #eee;
}

:root[data-theme="light"] .article-date {
    color: #999;
}

:root[data-theme="light"] .article-title {
    color: #333;
}

:root[data-theme="light"] .no-results {
    color: #999;
}

:root[data-theme="light"] .tag-btn {
    border-color: #ddd;
    color: #666;
}

:root[data-theme="light"] .tag-btn:hover {
    border-color: #aaa;
}

:root[data-theme="light"] .exit-btn {
    border-color: #ddd;
    color: #666;
}

/* 浅色主题下的文章阅读页 */
:root[data-theme="light"] .article-meta {
    color: #999;
}

:root[data-theme="light"] .article-reader::before {
    border-color: rgba(0, 0, 0, 0.06);
}

/* ==================== 主题切换按钮 ==================== */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 6px 8px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    width: 34px;
    height: 34px;
}
.theme-toggle:hover {
    border-color: var(--border-accent);
    color: var(--accent-primary);
    background: var(--bg-hover);
}
.theme-toggle svg {
    width: 16px;
    height: 16px;
}
/* 默认显示月亮（暗色主题下切换到浅色） */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: none; }

/* ==================== 基础重置 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    max-width: 100vw;
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

body {
    font-family: var(--font-mono);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    max-width: 100vw;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-text-size-adjust: 100%;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

/* 全局过渡动画 - 所有使用CSS变量的元素自动获得过渡效果 */
*,
*::before,
*::after {
    transition-property: background-color, border-color, color, fill, stroke, box-shadow, opacity;
    transition-duration: var(--transition-normal);
    transition-timing-function: ease;
}

/* canvas 元素不需要过渡 */
canvas, canvas::before, canvas::after {
    transition: none !important;
}

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* ==================== 背景装饰 ==================== */
.binary-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
    opacity: 0.15;
}

.matrix-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 5;
    opacity: 0.4;
}

.caesar-wheel {
    position: fixed;
    width: 300px;
    height: 300px;
    pointer-events: none;
    z-index: 1;
    opacity: 0.4;
    animation: rotate-slow 120s linear infinite;
}

.caesar-wheel.top-left {
    top: -100px;
    left: -100px;
}

.caesar-wheel.bottom-right {
    bottom: -100px;
    right: -100px;
    animation-direction: reverse;
}

.wheel-svg {
    width: 100%;
    height: 100%;
}

.caesar-wheel svg circle {
    stroke: rgba(var(--accent-primary-rgb), 0.1);
}
.caesar-wheel svg text {
    fill: rgba(var(--accent-primary-rgb), 0.3);
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ==================== 主页导航 ==================== */
/* 全局导航栏（原 home-nav） */
.global-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--bg-primary);
    background: color-mix(in srgb, var(--bg-primary) 80%, transparent);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    transition: opacity var(--transition-normal);
}
.global-nav.hidden {
    opacity: 0;
    pointer-events: none;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    padding: 4px 0;
}

.logo-symbol {
    font-size: 28px;
    color: var(--accent-primary);
    font-weight: 300;
}

.logo-badge {
    font-size: 11px;
    color: #444;
    font-weight: 400;
    margin-left: 6px;
    letter-spacing: 0.05em;
}

.logo-text {
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-primary);
    border-radius: 1px;
}

.vault-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(var(--accent-primary-rgb), 0.1);
    border: 1px solid var(--border-accent);
    border-radius: 6px;
    color: var(--accent-primary) !important;
}

.vault-link:hover {
    background: rgba(var(--accent-primary-rgb), 0.2);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

.mobile-menu {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: 16px;
    z-index: 99;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav-link {
    display: block;
    padding: 12px 16px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 8px;
    transition: background var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: var(--bg-hover);
}

.mobile-theme-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    background: none;
    border: none;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: 8px;
    text-decoration: none;
    text-align: left;
}

.mobile-theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.mobile-theme-toggle .icon-sun,
.mobile-theme-toggle .icon-moon { width: 18px; height: 18px; }

:root .mobile-theme-toggle .icon-sun { display: none; }
:root .mobile-theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] .mobile-theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .mobile-theme-toggle .icon-sun { display: block; }

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
}

/* ==================== 主页 Hero ==================== */
.home-page {
    min-height: 100vh;
    padding-top: 60px;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 24px 60px;
    position: relative;
    z-index: 2;
    background: transparent;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    animation: fade-in 1s ease;
}

.hero-title {
    font-size: 3rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 24px;
    text-align: center;
}

.hero-title-line {
    display: block;
    color: var(--text-primary);
}

.hero-title-accent {
    display: block;
    color: var(--accent-primary);
    text-shadow: 0 0 40px rgba(var(--accent-primary-rgb), 0.3);
}

.hero-subtitle {
    font-size: 1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 32px;
    text-align: center;
}

.hero-math {
    display: block;
    margin-top: 16px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-secondary);
    opacity: 0.8;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.hero-tag {
    padding: 6px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 13px;
    color: var(--text-secondary);
}

@keyframes fade-in {
    from { 
        opacity: 0; 
        transform: translateY(20px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== Home 中间文案 ==================== */
.home-between {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 24px 0 60px;
    padding: 0 24px;
    position: relative;
    z-index: 10;
}

.home-between-text {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.05rem;
    color: #999;
    letter-spacing: 0.15em;
    margin: 0;
}

/* ==================== README 卡片 ==================== */
.home-readme-card {
    max-width: 520px;
    margin: 0 auto 48px;
    border: 1px solid #222;
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    position: relative;
    z-index: 10;
}

.home-readme-card:hover {
    border-color: #00ff88;
    box-shadow: 0 0 24px rgba(0, 255, 136, 0.08);
}

.readme-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    background: #0a0a0a;
    border-bottom: 1px solid #1a1a1a;
}

.readme-card-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.readme-card-dot.red { background: #ff5f56; }
.readme-card-dot.yellow { background: #ffbd2e; }
.readme-card-dot.green { background: #27c93f; }

.readme-card-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: #888;
    margin-left: 8px;
}

.readme-card-body {
    padding: 20px 24px;
}

.readme-card-line {
    font-family: 'Noto Serif SC', serif;
    font-size: 0.9rem;
    color: #aaa;
    line-height: 1.8;
    margin: 0 0 8px;
}

.readme-card-line.muted {
    color: #555;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    margin-top: 16px;
    margin-bottom: 0;
}

/* ==================== 密钥室入口按钮 ==================== */
.vault-entrance {
    margin-top: 60px;
    position: relative;
    z-index: 2;

    background: transparent;
}

.vault-btn-wrapper {
    position: relative;
    width: 220px;
    height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.vault-ring {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.vault-ring-outer {
    animation: rotate-ring 30s linear infinite;
}

.vault-ring-inner {
    animation: rotate-ring 20s linear infinite reverse;
}

@keyframes rotate-ring {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.ring-svg {
    width: 100%;
    height: 100%;
}

.ring-text {
    fill: var(--accent-primary);
    font-size: 10px;
    font-family: var(--font-mono);
    letter-spacing: 2px;
    opacity: 0.4;
}

.ring-text.inner {
    font-size: 8px;
    opacity: 0.3;
}

.vault-btn {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 160px;
    height: 160px;
    background: linear-gradient(145deg, var(--bg-card), var(--bg-tertiary));
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    box-shadow: 
        0 0 30px rgba(var(--accent-primary-rgb), 0.2),
        inset 0 0 30px rgba(var(--accent-primary-rgb), 0.05);
}

.vault-btn:hover {
    transform: scale(1.05);
    box-shadow: 
        0 0 50px rgba(var(--accent-primary-rgb), 0.3),
        inset 0 0 40px rgba(var(--accent-primary-rgb), 0.1);
    border-color: var(--accent-primary);
}

.vault-btn:active {
    transform: scale(0.98);
}

.vault-btn-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.vault-icon {
    color: var(--accent-primary);
    transition: all var(--transition-normal);
}

.vault-btn:hover .vault-icon {
    transform: translateY(-3px);
    filter: drop-shadow(0 0 10px rgba(var(--accent-primary-rgb), 0.5));
}

.vault-icon svg .lock-top {
    transition: all var(--transition-normal);
}

.vault-btn:hover .vault-icon svg .lock-top {
    transform-origin: center;
    animation: unlock-pulse 1s ease infinite;
}

@keyframes unlock-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.vault-btn-text {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.vault-btn-subtext {
    font-size: 11px;
    color: var(--text-muted);
    text-align: center;
    max-width: 100px;
}

.vault-btn-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(circle, rgba(var(--accent-primary-rgb), 0.15) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.vault-btn:hover .vault-btn-glow {
    opacity: 1;
    animation: glow-pulse 2s ease infinite;
}

@keyframes glow-pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

/* ==================== 主页页脚 ==================== */
.home-footer {
    padding: 60px 24px;
    text-align: center;
    position: relative;
    z-index: 10;
}

.footer-symbol {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 16px;
}

.footer-text {
    font-size: 1rem;
    color: #e0e0e0;
    margin-bottom: 8px;
}

.footer-formula {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: #666;
}

/* ==================== 主入口 ==================== */
/* 密钥室页面 */
.vault-page {
    position: relative;
    z-index: 10;
    min-height: 100vh;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 20px 20px;
}

.entrance {
    width: 100%;
    max-width: 480px;
    animation: fade-in 1s ease;
}

/* 终端头部 */
.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-bottom: none;
    border-radius: 12px 12px 0 0;
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green { background: #27ca40; }

.terminal-title {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-muted);
}

/* 入口内容 */
.entrance-content {
    padding: 40px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 0 0 12px 12px;
    box-shadow: var(--shadow-glow);
    position: relative;
}

/* ASCII艺术 */
.ascii-art {
    text-align: center;
    margin-bottom: 32px;
}

.ascii-art pre {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
    line-height: 1.3;
    text-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.5);
    display: inline-block;
    text-align: left;
    margin: 0 auto;
    padding: 0;
}

/* 提示文字 */
.hint-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

/* 输入框 */
.input-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-accent);
    border-radius: 8px;
    transition: all var(--transition-normal);
}

.input-wrapper:focus-within {
    border-color: var(--accent-primary);
    box-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.15);
}

.input-prefix {
    color: var(--accent-primary);
    font-weight: 500;
    user-select: none;
}

.key-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 16px;
    letter-spacing: 2px;
}

.key-input::placeholder {
    color: var(--text-dim);
    letter-spacing: 1px;
}

/* 提交按钮 */
.submit-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border-accent);
    border-radius: 8px;
    color: var(--accent-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.submit-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: translateX(2px);
}

.submit-btn:active {
    transform: scale(0.95);
}

/* 错误消息 */
.error-message {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    padding: 12px;
    background: rgba(var(--accent-error-rgb), 0.1);
    border: 1px solid rgba(var(--accent-error-rgb), 0.3);
    border-radius: 6px;
    color: var(--accent-error);
    font-size: 13px;
    animation: shake 0.5s ease;
}

.error-message.show {
    display: flex;
}

.error-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    background: var(--accent-error);
    color: var(--bg-primary);
    border-radius: 50%;
    font-size: 12px;
    font-weight: bold;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* 成功动画 — 用 opacity 代替 display:none，确保 offsetWidth 能触发 reflow */
.success-animation {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
}

.success-animation.show {
    opacity: 1;
    visibility: visible;
}

.success-ring {
    position: absolute;
    width: 100px;
    height: 100px;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    opacity: 0;
}

/* 只有 .show 状态下才触发动画 */
.success-animation.show .success-ring {
    animation: ring-expand 1s ease-out forwards;
}

.success-animation.show .success-ring.delay1 { animation-delay: 0.2s; }
.success-animation.show .success-ring.delay2 { animation-delay: 0.4s; }

@keyframes ring-expand {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
        transform: translate(50px, 50px);
    }
    100% {
        width: 300px;
        height: 300px;
        opacity: 0;
        transform: translate(-50px, -50px);
    }
}

/* 底部提示 */
.footer-hint {
    margin-top: 32px;
    text-align: center;
    font-size: 12px;
    color: var(--text-dim);
}

.footer-hint .hint-key {
    color: var(--accent-secondary);
    margin-right: 8px;
}

/* ==================== 文章检索页 ==================== */
#articles {
    max-width: 800px;
    margin: 0 auto;
    padding: 120px 24px 40px;
}

#articles .articles-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
}

.articles-logo {
    font-size: 2rem;
    color: var(--accent-primary);
}

.search-box {
    flex: 1;
    background: transparent;
    border: 1px solid #333;
    border-radius: 4px;
    padding: 10px 16px;
    color: #e0e0e0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.search-box:focus {
    border-color: var(--accent-primary);
}

.search-box::placeholder {
    color: #555;
}

#articles .articles-list {
    margin-bottom: 24px;
}

.article-row {
    display: flex;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px solid #1a1a1a;
    cursor: pointer;
    transition: background 0.15s;
}

.article-row:hover {
    background: #141414;
}

.article-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: #666;
    min-width: 110px;
    flex-shrink: 0;
}

.article-separator {
    color: #333;
    margin: 0 12px;
    flex-shrink: 0;
}

.article-title {
    color: #e0e0e0;
    flex: 1;
    font-size: 0.95rem;
}

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

.article-tags {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}

.article-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-primary);
    cursor: pointer;
}

.article-tag:hover {
    text-decoration: underline;
}

.articles-empty {
    margin-top: -24px;
    margin-bottom: 24px;
}

.no-results {
    color: #666;
    font-family: 'JetBrains Mono', monospace;
    padding: 8px 0;
    text-align: center;
}

.tag-filter {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.tag-btn {
    background: transparent;
    border: 1px solid #333;
    color: #888;
    padding: 4px 14px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    transition: all 0.15s;
}

.tag-btn:hover {
    border-color: #555;
    color: #ccc;
}

.tag-btn.active {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.exit-btn {
    background: transparent;
    border: 1px solid #333;
    color: #888;
    padding: 8px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    transition: all 0.15s;
    margin-top: 24px;
}

.exit-btn:hover {
    border-color: #555;
    color: #ccc;
}

/* ==================== 文章列表页面 ==================== */
.articles-container {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    padding: 100px 20px 20px;
    animation: fade-in 0.5s ease;
}

.articles-container .articles-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 800px;
    margin: 0 auto 40px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.category-title {
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
}

.article-count {
    font-size: 13px;
    color: var(--text-muted);
}

.articles-container .articles-list {
    max-width: 800px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    min-height: calc(100vh - 200px);
}

/* ==================== 悬浮按钮 ==================== */
.back-fab {
    position: fixed;
    bottom: 30px;
    left: 30px;
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    color: var(--accent-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-card);
}

.back-fab:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.toc-fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    color: var(--accent-secondary);
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-card);
    pointer-events: auto;
}

.toc-fab:hover {
    background: var(--accent-secondary);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.theme-fab {
    position: fixed;
    top: 80px;
    right: 30px;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-accent);
    border-radius: 50%;
    color: var(--accent-warning);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    z-index: 1001;
    box-shadow: var(--shadow-card);
}

.theme-fab:hover {
    background: var(--accent-warning);
    color: var(--bg-primary);
    transform: scale(1.1);
}

.theme-fab svg { width: 18px; height: 18px; }

:root .theme-fab .icon-sun { display: none; }
:root .theme-fab .icon-moon { display: block; }
:root[data-theme="light"] .theme-fab .icon-moon { display: none; }
:root[data-theme="light"] .theme-fab .icon-sun { display: block; }

/* ==================== 目录面板 ==================== */
.toc-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
}

.toc-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 300px;
    max-width: 80vw;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-subtle);
    z-index: 999;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
}

/* active = 滑入显示 */
.toc-panel.active {
    transform: translateX(0);
}

.toc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-subtle);
}

.toc-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.toc-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-fast);
}

.toc-close:hover {
    color: var(--text-primary);
}

.toc-list {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
}

.toc-item {
    display: block;
    padding: 10px 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    cursor: pointer;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.toc-item:hover {
    background: var(--bg-hover);
    color: var(--accent-primary);
}

.toc-h2 { padding-left: 0; }
.toc-h3 { padding-left: 16px; }
.toc-h4 { padding-left: 32px; font-size: 13px; }

/* ==================== 文章阅读器 ==================== */
.article-reader {
    position: relative;
    z-index: 10;
    max-width: 820px;
    margin: 0 auto;
    padding: 100px 48px 80px;
    animation: fade-in 0.5s ease;
    isolation: isolate;
}

/* 液态玻璃背景层 —— 独立于文字，mask 不影响文本 */
.article-reader::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;

    /* 液态玻璃核心 */
    background:
        radial-gradient(ellipse 80% 60% at 50% 30%, rgba(var(--accent-primary-rgb), 0.04), transparent 70%),
        radial-gradient(ellipse 60% 50% at 50% 70%, rgba(var(--accent-secondary-rgb), 0.03), transparent 70%),
        linear-gradient(135deg, rgba(var(--bg-primary-rgb), 0.55), rgba(var(--bg-primary-rgb), 0.45));
    backdrop-filter: blur(60px) saturate(120%);
    -webkit-backdrop-filter: blur(60px) saturate(120%);

    /* 柔和边框 */
    border: 1px solid rgba(var(--accent-primary-rgb), 0.06);
    border-radius: 20px;

    /* 边缘渐变过渡 —— 上下两端缓慢融入页面背景（仅作用于背景层） */
    mask-image:
        linear-gradient(
            to bottom,
            transparent 0%,
            rgba(0, 0, 0, 0.12) 6%,
            rgba(0, 0, 0, 0.35) 12%,
            rgba(0, 0, 0, 1) 18%,
            rgba(0, 0, 0, 1) 82%,
            rgba(0, 0, 0, 0.35) 88%,
            rgba(0, 0, 0, 0.12) 94%,
            transparent 100%
        );
    -webkit-mask-image:
        linear-gradient(
            to bottom,
            transparent 0%,
            rgba(0, 0, 0, 0.12) 6%,
            rgba(0, 0, 0, 0.35) 12%,
            rgba(0, 0, 0, 1) 18%,
            rgba(0, 0, 0, 1) 82%,
            rgba(0, 0, 0, 0.35) 88%,
            rgba(0, 0, 0, 0.12) 94%,
            transparent 100%
        );
}

.article-content {
    font-family: var(--font-serif);
    font-size: 17px;
    line-height: 1.95;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    word-break: break-word;
}

/* 覆盖 github-markdown-css 的背景，交给液态玻璃容器统一处理 */
.article-content.markdown-body {
    background: transparent !important;
}

/* ---------- 标题 ---------- */
.article-content h1 {
    font-size: 34px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
    line-height: 1.3;
    letter-spacing: 0.02em;
    scroll-margin-top: 24px;
}

.article-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 56px 0 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
    scroll-margin-top: 24px;
    position: relative;
}

.article-content h2::before {
    content: '#';
    color: var(--accent-primary);
    opacity: 0.35;
    margin-right: 12px;
    font-family: var(--font-mono);
    font-weight: 400;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 36px 0 16px;
    scroll-margin-top: 24px;
    position: relative;
    padding-left: 16px;
}

.article-content h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background: var(--accent-primary);
    border-radius: 2px;
    opacity: 0.5;
}

.article-content h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 28px 0 12px;
    scroll-margin-top: 24px;
    position: relative;
}

.article-content h5 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 24px 0 10px;
    scroll-margin-top: 24px;
}

.article-content h6 {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    margin: 20px 0 8px;
    scroll-margin-top: 24px;
}

/* ---------- 段落 ---------- */
.article-content p {
    margin-bottom: 20px;
}

/* ---------- 强调 ---------- */
.article-content strong,
.article-content b {
    font-weight: 700;
    color: #ffd699;
}

.article-content em,
.article-content i {
    font-style: italic;
}

/* ---------- 删除线 ---------- */
.article-content del {
    opacity: 0.5;
    text-decoration: line-through;
}

/* ---------- 高亮 ---------- */
.article-content mark {
    background: rgba(var(--accent-warning-rgb), 0.25);
    color: var(--text-primary);
    padding: 1px 4px;
    border-radius: 2px;
}

/* ---------- 链接 ---------- */
.article-content a {
    color: var(--accent-primary);
    text-decoration: none;
    border-bottom: 1px solid rgba(var(--accent-primary-rgb), 0.3);
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.article-content a:hover {
    border-bottom-color: var(--accent-primary);
    color: #33ff99;
}

/* ---------- 行内代码 ---------- */
.article-content code {
    font-family: var(--font-mono);
    font-size: 13.5px;
    padding: 2px 7px;
    background: var(--bg-tertiary);
    border: 1px solid rgba(var(--accent-tertiary-rgb), 0.12);
    border-radius: 4px;
    color: var(--accent-tertiary);
}

/* ---------- 代码块 ---------- */
.article-content pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 24px;
    margin: 28px 0;
    overflow-x: auto;
    position: relative;
}

.article-content pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(var(--accent-primary-rgb), 0.15), transparent);
}

.article-content pre code {
    background: none;
    padding: 0;
    font-size: 13.5px;
    line-height: 1.7;
    color: var(--text-primary);
    border: none;
}

/* ---------- 代码块包装器 ---------- */
.article-content .code-block-wrapper {
    position: relative;
    margin: 28px 0;
}

.article-content .code-block-wrapper pre {
    margin: 0;
}

/* ---------- 代码块语言标签 ---------- */
.article-content .code-lang-label {
    position: absolute;
    top: 0;
    right: 16px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg-primary);
    padding: 3px 10px;
    border-radius: 0 0 6px 6px;
    border: 1px solid var(--border-subtle);
    border-top: none;
    text-transform: lowercase;
    z-index: 2;
}

/* ---------- 复制按钮 ---------- */
.article-content .copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 32px;
    height: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 6px;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-family: var(--font-mono);
    opacity: 0;
    transition: all var(--transition-fast);
    z-index: 5;
}

.article-content .code-block-wrapper:hover .copy-btn {
    opacity: 1;
}

.article-content .copy-btn:hover {
    background: var(--bg-hover);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.article-content .copy-btn.copied {
    color: var(--accent-success);
    border-color: var(--accent-success);
}

/* ---------- 引用块 ---------- */
.article-content blockquote {
    border-left: 3px solid var(--accent-secondary);
    padding: 16px 20px;
    margin: 28px 0;
    color: var(--text-secondary);
    font-style: italic;
    background: rgba(var(--accent-secondary-rgb), 0.04);
    border-radius: 0 6px 6px 0;
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

/* ---------- 列表 ---------- */
.article-content ul,
.article-content ol {
    margin: 20px 0;
    padding-left: 28px;
}

.article-content ul ::marker {
    color: var(--accent-primary);
    opacity: 0.5;
}

.article-content ol ::marker {
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.85em;
}

.article-content li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.article-content li > ul,
.article-content li > ol {
    margin: 8px 0;
}

/* ---------- 分割线 ---------- */
.article-content hr {
    border: none;
    height: 1px;
    margin: 40px 0;
    background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
}

/* ---------- 图片 ---------- */
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 24px 0;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.3);
}

/* ---------- 标题锚点 ---------- */
.article-content .heading-anchor {
    position: absolute;
    left: -1.3em;
    top: 50%;
    transform: translateY(-50%);
    color: var(--accent-primary);
    opacity: 0;
    text-decoration: none;
    border-bottom: none !important;
    font-family: var(--font-mono);
    font-size: 0.9em;
    font-weight: 400;
    transition: opacity var(--transition-fast);
}

.article-content h2:hover .heading-anchor,
.article-content h3:hover .heading-anchor,
.article-content h4:hover .heading-anchor {
    opacity: 0.5;
}

.article-content .heading-anchor:hover {
    opacity: 1 !important;
}

/* ---------- 表格 ---------- */
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 15px;
}

.article-content th,
.article-content td {
    padding: 12px 16px;
    border: 1px solid var(--border-subtle);
    text-align: left;
}

.article-content th {
    background: var(--bg-tertiary);
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.article-content tr:nth-child(even) td {
    background: rgba(var(--accent-primary-rgb), 0.02);
}

/* ---------- 表格滚动包装器 ---------- */
.article-content .table-wrapper {
    overflow-x: auto;
    max-width: 100%;
    margin: 28px 0;
    -webkit-overflow-scrolling: touch;
}

.article-content .table-wrapper table {
    margin: 0;
}

/* ---------- 键盘 ---------- */
.article-content kbd {
    font-family: var(--font-mono);
    font-size: 12.5px;
    padding: 2px 7px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-accent);
    border-radius: 4px;
    color: var(--text-secondary);
    box-shadow: 0 1px 0 rgba(var(--accent-primary-rgb), 0.1);
}

/* ---------- 脚注 ---------- */
.article-content sup a {
    font-family: var(--font-mono);
    font-size: 0.8em;
    border-bottom: none;
}

/* ---------- 任务列表 ---------- */
.article-content input[type="checkbox"] {
    accent-color: var(--accent-primary);
    margin-right: 6px;
}

/* ==================== 文章元信息 ==================== */
.article-meta {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 8px 0 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.article-category {
    padding: 4px 12px;
    background: rgba(var(--accent-warning-rgb), 0.15);
    color: var(--accent-warning);
    border-radius: 4px;
}

.article-category.public-category {
    background: rgba(var(--accent-secondary-rgb), 0.15);
    color: var(--accent-secondary);
}

.article-date {
    color: var(--text-muted);
    line-height: 28px;
}

/* ==================== 打字机效果 ==================== */
.typewriter-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.typewriter-text {
    font-family: var(--font-mono);
    font-size: 24px;
    color: var(--accent-primary);
    text-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.5);
}

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
    grid-column: 1 / -1; /* 跨越所有 grid 列 */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 14px;
}

/* ==================== 响应式 ==================== */
@media (max-width: 768px) {
    .hero {
        padding: 40px 20px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .vault-btn-wrapper {
        width: 180px;
        height: 180px;
    }
    
    .vault-btn {
        width: 130px;
        height: 130px;
    }
    
    .vault-icon svg {
        width: 36px;
        height: 36px;
    }
    
    .vault-btn-text {
        font-size: 12px;
    }
    
    .vault-btn-subtext {
        font-size: 10px;
    }
    
    .article-reader {
        padding: 70px 16px 50px;
        max-width: 100%;
    }

    .article-reader::before {
        border-radius: 12px;
        backdrop-filter: blur(40px) saturate(110%);
        -webkit-backdrop-filter: blur(40px) saturate(110%);
    }

    .article-content h1 {
        font-size: 26px;
    }

    .article-content h2 {
        font-size: 20px;
        margin: 40px 0 16px;
    }

    .article-content h3 {
        font-size: 18px;
    }

    .article-content {
        font-size: 16px;
    }

    .article-content pre {
        padding: 18px;
        border-radius: 8px;
    }

    .article-content .code-block-wrapper {
        margin: 22px 0;
    }

    .article-content .code-lang-label {
        font-size: 10px;
        padding: 2px 8px;
        right: 10px;
    }

    .article-content .copy-btn {
        width: 28px;
        height: 28px;
        top: 8px;
        right: 8px;
        font-size: 12px;
        opacity: 0.6;
    }

    .article-content .heading-anchor {
        font-size: 0.8em;
        left: -1.1em;
    }
    
    .back-fab,
    .toc-fab,
    .theme-fab {
        width: 44px;
        height: 44px;
        bottom: 20px;
    }
    .theme-fab {
        top: 70px;
        right: 16px;
        bottom: auto;
    }
    
    .back-fab {
        left: 20px;
    }
    
    .toc-fab {
        right: 20px;
    }
}

/* ==================== 解密动画覆盖层 ==================== */
.decryption-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 20000;
    overflow: hidden;
}

.decryption-overlay.hidden {
    display: none;
}

.decryption-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    padding: 40px;
    text-align: center;
    z-index: 2;
}

.decryption-title {
    font-family: var(--font-mono);
    font-size: 28px;
    color: var(--accent-primary);
    margin-bottom: 24px;
    letter-spacing: 4px;
    text-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.5);
    animation: flicker 2s ease infinite;
}

@keyframes flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        opacity: 1;
        text-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.5),
                     0 0 40px rgba(var(--accent-primary-rgb), 0.3);
    }
    20%, 24%, 55% {
        opacity: 0.8;
        text-shadow: none;
    }
}

.decryption-status {
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    min-height: 24px;
}

.decryption-progress {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 32px;
    border: 1px solid var(--border-subtle);
}

.decryption-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    border-radius: 4px;
    transition: width 0.1s linear;
    box-shadow: 0 0 20px rgba(var(--accent-primary-rgb), 0.5);
}

.decryption-text-container {
    height: 120px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 20px;
    overflow: hidden;
    margin-bottom: 20px;
}

.decryption-random-text {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--accent-primary);
    line-height: 1.4;
    text-align: left;
    word-break: break-all;
    text-shadow: 0 0 5px rgba(var(--accent-primary-rgb), 0.3);
}

.decryption-matrix {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}

.decryption-matrix-column {
    position: absolute;
    top: -100%;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--accent-primary);
    opacity: 0.3;
    writing-mode: vertical-rl;
    animation: matrix-fall linear infinite;
}

@keyframes matrix-fall {
    0% { transform: translateY(0); }
    100% { transform: translateY(200vh); }
}

:root[data-theme="light"] .decryption-random-text {
    text-shadow: 0 0 5px rgba(var(--accent-primary-rgb), 0.3);
}

:root[data-theme="light"] .decryption-matrix-column {
    opacity: 0.2;
}

:root[data-theme="light"] .decryption-text-container {
    background: rgba(0, 0, 0, 0.05);
}

/* ==================== 动画开关按钮 ==================== */
.animation-toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
    padding: 12px;
    background: rgba(var(--accent-primary-rgb), 0.05);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
}

.animation-toggle-label {
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--text-secondary);
    user-select: none;
}

.animation-toggle-btn {
    position: relative;
    width: 52px;
    height: 28px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    padding: 0;
}

.animation-toggle-btn:hover {
    border-color: var(--border-accent);
}

.animation-toggle-btn.active {
    background: rgba(var(--accent-primary-rgb), 0.2);
    border-color: var(--accent-primary);
}

.toggle-slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--transition-normal);
}

.animation-toggle-btn.active .toggle-slider {
    left: 27px;
    background: var(--accent-primary);
    box-shadow: 0 0 10px rgba(var(--accent-primary-rgb), 0.5);
}

:root[data-theme="light"] .animation-toggle-btn.active {
    background: rgba(var(--accent-primary-rgb), 0.15);
    border-color: var(--accent-primary);
}

:root[data-theme="light"] .animation-toggle-btn.active .toggle-slider {
    box-shadow: 0 0 10px rgba(var(--accent-primary-rgb), 0.3);
}