/* 自定义动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

.animate-delay-200 {
    animation-delay: 0.2s;
    animation-fill-mode: both;
}

.animate-delay-400 {
    animation-delay: 0.4s;
    animation-fill-mode: both;
}

.animate-delay-600 {
    animation-delay: 0.6s;
    animation-fill-mode: both;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* 打字机效果 */
.typewriter {
    overflow: hidden;
    border-right: .15em solid #3B82F6;
    white-space: nowrap;
    animation: typing 3.5s steps(40, end), blink-caret .75s step-end infinite;
}

@keyframes typing {
    from { width: 0 }
    to { width: 100% }
}

@keyframes blink-caret {
    from, to { border-color: transparent }
    50% { border-color: #3B82F6; }
}

/* 技能条动画 */
.skill-bar {
    width: 0;
    transition: width 2s ease-in-out;
}

.skill-bar.active {
    width: var(--skill-level);
}

/* 项目卡片悬停效果 */
.project-card {
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
}

/* 导航栏滚动效果 */
.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 背景动画