/* 公共样式 */
:root {
    --primary-50: #eef2ff;
    --primary-100: #e0e7ff;
    --primary-200: #c7d2fe;
    --primary-300: #a5b4fc;
    --primary-400: #818cf8;
    --primary-500: #6366f1;
    --primary-600: #4f46e5;
    --primary-700: #4338ca;
    --primary-800: #3730a3;
    --primary-900: #312e81;
    
    --secondary-50: #f5f3ff;
    --secondary-100: #ede9fe;
    --secondary-200: #ddd6fe;
    --secondary-300: #c4b5fd;
    --secondary-400: #a78bfa;
    --secondary-500: #8b5cf6;
    --secondary-600: #7c3aed;
    --secondary-700: #6d28d9;
    --secondary-800: #5b21b6;
    --secondary-900: #4c1d95;
    
    --dark-100: #d1d5db;
    --dark-200: #9ca3af;
    --dark-300: #6b7280;
    --dark-400: #4b5563;
    --dark-500: #374151;
    --dark-600: #1f2937;
    --dark-700: #111827;
    --dark-800: #0f172a;
    --dark-900: #0a0f1a;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: #f1f1f1;
}
.dark ::-webkit-scrollbar-track {
    background: var(--dark-700);
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}
.dark ::-webkit-scrollbar-thumb {
    background: var(--dark-400);
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}
.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--dark-300);
}

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

/* 加载动画 */
.loader {
    border-top-color: var(--primary-500);
    -webkit-animation: spinner 1.5s linear infinite;
    animation: spinner 1.5s linear infinite;
}

@-webkit-keyframes spinner {
    0% { -webkit-transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); }
}

@keyframes spinner {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 导航栏滚动效果 */
.navbar-fixed {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.dark .navbar-fixed {
    background-color: rgba(15, 23, 42, 0.8);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* 3D背景画布 */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* 项目卡片悬停放大效果 */
.project-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.dark .project-card:hover {
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
}

/* 技能图标动画 */
.skill-icon {
    transition: all 0.3s ease;
}

.skill-icon:hover {
    transform: translateY(-5px) scale(1.1);
}

/* 按钮悬停效果 */
.btn-primary {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: all 0.6s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

/* 文字渐变效果 */
.text-gradient {
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 时间线样式 */
.timeline-container {
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 15px;
    height: 100%;
    width: 2px;
    background-color: #e5e7eb;
}

.dark .timeline-container::before {
    background-color: var(--dark-500);
}

.timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: 20px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--primary-500);
    border: 3px solid white;
}

.dark .timeline-item::before {
    border: 3px solid var(--dark-700);
}

/* 动画 */
@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes slideUp {
    0% { transform: translateY(20px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes slideDown {
    0% { transform: translateY(-20px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes slideLeft {
    0% { transform: translateX(20px); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

@keyframes slideRight {
    0% { transform: translateX(-20px); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-in-out;
}

.animate-slide-up {
    animation: slideUp 0.5s ease-in-out;
}

.animate-slide-down {
    animation: slideDown 0.5s ease-in-out;
}

.animate-slide-left {
    animation: slideLeft 0.5s ease-in-out;
}

.animate-slide-right {
    animation: slideRight 0.5s ease-in-out;
}