/* ==================== Cyberpunk Accents ==================== */
/* 赛博朋克风格元素 - 用于点缀，不主导 */

:root {
    /* Cyberpunk Colors - 赛博朋克点缀色 */
    --cyber-blue: #00F0FF;        /* 霓虹蓝 */
    --cyber-purple: #BD00FF;       /* 故障紫 */
    --cyber-dark: #1A1A2E;         /* 深空灰 */
    --cyber-pink: #FF0055;         /* 霓虹粉 */
    
    /* Gradients - 赛博朋克渐变 */
    --cyber-gradient: linear-gradient(135deg, #00F0FF, #BD00FF);
    --cyber-gradient-subtle: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(189, 0, 255, 0.1));
}

/* Glitch Text Effect - 故障艺术文字效果 */
@keyframes glitch {
    0%, 100% {
        transform: translate(0);
        text-shadow: none;
    }
    20% {
        transform: translate(-2px, 2px);
        text-shadow: 2px 0 var(--cyber-blue), -2px 0 var(--cyber-purple);
    }
    40% {
        transform: translate(-2px, -2px);
        text-shadow: -2px 0 var(--cyber-blue), 2px 0 var(--cyber-purple);
    }
    60% {
        transform: translate(2px, 2px);
        text-shadow: 2px 0 var(--cyber-purple), -2px 0 var(--cyber-blue);
    }
    80% {
        transform: translate(2px, -2px);
        text-shadow: -2px 0 var(--cyber-purple), 2px 0 var(--cyber-blue);
    }
}

.glitch-text {
    position: relative;
    animation: glitch 0.3s ease-in-out;
}

/* Neon Glow Effect - 霓虹发光效果 */
@keyframes neon-glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(0, 240, 255, 0.3),
                    0 0 10px rgba(0, 240, 255, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(0, 240, 255, 0.6),
                    0 0 30px rgba(189, 0, 255, 0.4),
                    0 0 40px rgba(0, 240, 255, 0.2);
    }
}

.neon-glow {
    animation: neon-glow 2s ease-in-out infinite;
}

/* Neon Border - 霓虹边框 */
.neon-border {
    border: 2px solid var(--cyber-blue);
    box-shadow: 0 0 5px rgba(0, 240, 255, 0.5),
                0 0 10px rgba(0, 240, 255, 0.3);
}

.neon-border-purple {
    border: 2px solid var(--cyber-purple);
    box-shadow: 0 0 5px rgba(189, 0, 255, 0.5),
                0 0 10px rgba(189, 0, 255, 0.3);
}

/* Card Hover with Neon - 卡片悬停霓虹效果 */
.card-cyber-hover {
    transition: all 0.3s ease;
}

.card-cyber-hover:hover {
    border: 2px solid var(--cyber-blue);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.4),
                0 0 30px rgba(0, 240, 255, 0.2);
}

/* Tech Grid Background - 科技网格背景 */
.tech-grid {
    position: relative;
    overflow: hidden;
}

.tech-grid::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

/* Digital Rain Canvas Container - 数字雨Canvas容器 */
.digital-rain {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    opacity: 0.1;
}

/* Cyberpunk Button - 赛博朋克按钮 */
.btn-cyber {
    background: transparent;
    border: 2px solid var(--cyber-blue);
    color: var(--cyber-blue);
    padding: 0.75rem 2rem;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-cyber::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--cyber-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.btn-cyber:hover::before {
    left: 0;
}

.btn-cyber:hover {
    color: white;
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.6);
}

/* Cyberpunk Link - 赛博朋克链接 */
.link-cyber {
    color: var(--text-secondary);
    position: relative;
    transition: color 0.3s ease;
}

.link-cyber::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--cyber-gradient);
    transition: width 0.3s ease;
}

.link-cyber:hover {
    color: var(--cyber-blue);
}

.link-cyber:hover::after {
    width: 100%;
}

/* Scanner Line Effect - 扫描线效果 */
.scanner-line {
    position: relative;
    overflow: hidden;
}

.scanner-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--cyber-gradient);
    animation: scan 3s linear infinite;
}

@keyframes scan {
    0% {
        top: 0;
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

/* Glitch Image Effect - 故障图片效果 */
.glitch-image {
    position: relative;
}

.glitch-image::before,
.glitch-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: inherit;
    opacity: 0.5;
}

.glitch-image::before {
    transform: translate(-2px, 2px);
    mix-blend-mode: color-dodge;
    animation: glitch-image-1 0.3s infinite;
}

.glitch-image::after {
    transform: translate(2px, -2px);
    mix-blend-mode: color-burn;
    animation: glitch-image-2 0.3s infinite;
}

@keyframes glitch-image-1 {
    0%, 100% { transform: translate(-2px, 2px); }
    50% { transform: translate(-2px, -2px); }
}

@keyframes glitch-image-2 {
    0%, 100% { transform: translate(2px, -2px); }
    50% { transform: translate(2px, 2px); }
}

/* Navigation Active State with Cyberpunk Effect - 导航激活状态赛博朋克效果 */
.nav-item.active {
    color: var(--text-primary);
    font-weight: 600;
    text-shadow: 0 0 10px rgba(232, 200, 114, 0.5);
}

.nav-item.active::after {
    width: 100%;
    background: var(--cyber-gradient);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

/* Loading Spinner Cyberpunk - 赛博朋克加载动画 */
.loading-cyber {
    width: 50px;
    height: 50px;
    border: 3px solid transparent;
    border-top-color: var(--cyber-blue);
    border-right-color: var(--cyber-purple);
    border-radius: 50%;
    animation: spin-cyber 1s linear infinite;
}

@keyframes spin-cyber {
    to { transform: rotate(360deg); }
}

/* Subtle Cyberpunk Accent - 微弱赛博朋克点缀 */
.cyber-accent {
    position: relative;
}

.cyber-accent::before {
    content: '';
    position: absolute;
    left: -10px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--cyber-gradient);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
}

/* Chapter Card Cyberpunk Hover - 篇章卡片赛博朋克悬停 */
.chapter-card:hover {
    border-color: var(--cyber-blue);
    box-shadow: 
        0 12px 40px rgba(61, 43, 31, 0.15),
        0 0 20px rgba(0, 240, 255, 0.2),
        inset 0 0 20px rgba(0, 240, 255, 0.05);
}