/* Joker User System - 统一样式表 */
:root {
    --js-primary: #667eea;
    --js-secondary: #764ba2;
    --js-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --js-glass: rgba(255, 255, 255, 0.1);
    --js-glass-border: rgba(255, 255, 255, 0.2);
    --js-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
    --js-radius: 16px;
    --js-radius-lg: 24px;
}

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

body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background-color: #0f0f1a;
    color: #fff;
    min-height: 100vh;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--js-primary); }

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: var(--js-bg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.navbar-logo { display: flex; align-items: center; gap: 12px; }
.navbar-logo img { height: 45px; width: auto; }
.navbar-logo span { font-size: 18px; font-weight: 700; color: #fff; letter-spacing: 1px; }

.navbar-menu { display: flex; align-items: center; gap: 8px; }
.navbar-menu a {
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 15px;
    font-weight: 500;
    border-radius: 25px;
    transition: all 0.3s ease;
}
.navbar-menu a:hover, .navbar-menu a.active { background: rgba(255, 255, 255, 0.2); color: #fff; }

/* 移动端菜单按钮（默认隐藏） */
.navbar-menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-left: auto;
}
.navbar-menu-btn:hover { background: rgba(255, 255, 255, 0.15); }
.navbar-menu-btn.active {
    background: var(--js-primary, #e94560);
    border-color: var(--js-primary, #e94560);
}
.navbar-menu-btn .hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 20px;
}
.navbar-menu-btn .hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    border-radius: 1px;
    transition: all 0.3s ease;
}
.navbar-menu-btn.active .hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.navbar-menu-btn.active .hamburger span:nth-child(2) { opacity: 0; }
.navbar-menu-btn.active .hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.navbar-avatar img {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
    cursor: pointer;
    transition: all 0.3s ease;
}
.navbar-avatar img:hover { border-color: #fff; transform: scale(1.1); }

.btn-auth {
    padding: 10px 24px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 25px;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}
.btn-auth:hover { background: #fff; color: var(--js-primary); }

/* 主内容 */
.main-content { padding-top: 70px; min-height: calc(100vh - 70px); }

.content-section { padding: 60px 40px; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 30px; }
.section-title {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 12px;
}
.section-title::before {
    content: '';
    width: 5px;
    height: 30px;
    background: var(--js-bg);
    border-radius: 3px;
}

.section-box {
    background: var(--js-glass);
    backdrop-filter: blur(10px);
    border: 1px solid var(--js-glass-border);
    border-radius: var(--js-radius-lg);
    padding: 30px;
}

.btn-primary {
    padding: 14px 24px;
    background: var(--js-bg);
    border: none;
    border-radius: var(--js-radius);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--js-shadow); }

/* 博客 */
.blog-list { display: flex; flex-direction: column; gap: 20px; }
.blog-item {
    background: var(--js-glass);
    border: 1px solid var(--js-glass-border);
    border-radius: var(--js-radius);
    padding: 25px;
}
.blog-title { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.blog-meta { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 10px; }
.blog-excerpt { color: rgba(255,255,255,0.7); margin-bottom: 15px; }
.blog-link { color: var(--js-primary); font-weight: 600; }

/* 底部 */
.footer { background: rgba(0,0,0,0.3); padding: 40px; text-align: center; margin-top: 60px; }
.footer-content { max-width: 1200px; margin: 0 auto; }
.footer-copyright { font-size: 13px; color: rgba(255,255,255,0.5); }

/* 登录页面 */
.login-wrapper {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}
.login-form {
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--js-glass-border);
    border-radius: var(--js-radius-lg);
    padding: 50px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--js-shadow);
}
.login-header { text-align: center; margin-bottom: 40px; }
.login-header h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; background: var(--js-bg); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.login-header p { color: rgba(255,255,255,0.6); font-size: 14px; }
.login-form .form-group { margin-bottom: 20px; }
.login-form .form-group label { display: block; margin-bottom: 8px; font-size: 14px; color: rgba(255,255,255,0.8); }
.login-form .form-group input[type="text"],
.login-form .form-group input[type="password"],
.login-form .form-group input[type="email"] {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255,255,255,0.05);
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: var(--js-radius);
    color: #fff;
    font-size: 14px;
    transition: all 0.3s ease;
}
.login-form .form-group input:focus { outline: none; border-color: var(--js-primary); }
.login-form .btn-primary { width: 100%; padding: 16px; background: var(--js-bg); border: none; border-radius: var(--js-radius); color: #fff; font-size: 16px; font-weight: 600; cursor: pointer; transition: all 0.3s ease; }
.login-form .btn-primary:hover { transform: translateY(-2px); box-shadow: var(--js-shadow); }
.checkbox-label { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.7); cursor: pointer; }
.login-footer { margin-top: 25px; text-align: center; }
.login-footer p { color: rgba(255,255,255,0.6); font-size: 14px; margin-bottom: 8px; }
.login-footer a { color: var(--js-primary); font-weight: 600; }

/* ============================================
   响应式适配 - 多设备屏幕
   ============================================ */

/* 平板 (1024px 以下) */
@media (max-width: 1200px) {
    .content-section { padding: 50px 30px; }
    .blog-list { gap: 15px; }
}

/* 平板竖屏 / 大手机 (1024px) */
@media (max-width: 1024px) {
    .navbar { padding: 0 20px; }
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(20, 20, 25, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 15px;
        gap: 5px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
        border-top: 1px solid rgba(255, 255, 255, 0.05);
    }
    .navbar-menu.show { display: flex; }
    .navbar-menu a {
        padding: 12px 16px;
        border-radius: 8px;
        text-align: center;
    }
    .navbar-menu form { margin: 10px 0; }
    .navbar-menu-btn { display: flex; }
    .content-section { padding: 40px 25px; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 15px; }
}

/* 手机 (768px 以下) */
@media (max-width: 768px) {
    .navbar { height: 60px; padding: 0 15px; }
    .navbar-logo img { height: 35px; }
    .navbar-logo span { font-size: 16px; }
    .btn-auth { padding: 8px 16px; font-size: 13px; }
    .navbar-avatar img { width: 32px; height: 32px; }
    
    .content-section { padding: 30px 15px; }
    .section-title { font-size: 18px; }
    .section-title::before { height: 20px; }
    .section-box { padding: 20px; border-radius: var(--js-radius); }
    
    .blog-list { gap: 12px; }
    .blog-item { padding: 18px; border-radius: 12px; }
    .blog-title { font-size: 18px; }
    .blog-meta { font-size: 12px; }
    .blog-excerpt { font-size: 14px; }
    
    .login-wrapper { padding: 20px 15px; }
    .login-form { padding: 30px 20px; border-radius: 16px; }
    .login-header { margin-bottom: 30px; }
    .login-header h2 { font-size: 24px; }
    .login-header p { font-size: 13px; }
    .login-form .form-group { margin-bottom: 15px; }
    .login-form .form-group input { padding: 12px 14px; font-size: 14px; }
    .login-form .btn-primary { padding: 14px; font-size: 15px; }
    .checkbox-label { font-size: 13px; }
    
    .footer { padding: 30px 20px; }
    .footer-copyright { font-size: 12px; }
}

/* 小手机 (480px 以下) */
@media (max-width: 480px) {
    .navbar { padding: 0 12px; }
    .navbar-logo span { display: none; }
    .btn-auth { padding: 6px 12px; font-size: 12px; }
    
    .content-section { padding: 25px 12px; }
    .section-title { font-size: 16px; gap: 8px; }
    
    .blog-item { padding: 15px; }
    .blog-title { font-size: 16px; margin-bottom: 8px; }
    .blog-meta { font-size: 11px; }
    .blog-excerpt { font-size: 13px; margin-bottom: 12px; }
    .blog-link { font-size: 13px; }
    
    .login-wrapper { padding: 15px 10px; }
    .login-form { padding: 25px 15px; }
    .login-header h2 { font-size: 22px; }
    .login-form .form-group input { padding: 10px 12px; }
    .login-footer { margin-top: 20px; }
    .login-footer p { font-size: 13px; }
    
    .btn-primary { padding: 12px 20px; font-size: 13px; }
    
    .footer { padding: 25px 15px; }
    .footer-copyright { font-size: 11px; }
}

/* 超小手机 (320px) */
@media (max-width: 320px) {
    .login-form { padding: 20px 12px; }
    .blog-item { padding: 12px; border-radius: 8px; }
    .blog-title { font-size: 15px; }
}

/* 横屏适配 */
@media (max-height: 500px) and (orientation: landscape) {
    .login-wrapper { padding: 15px 40px; }
    .login-form { max-width: 400px; }
}

/* 高分辨率屏幕 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .navbar-logo img { image-rendering: -webkit-optimize-contrast; }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .blog-item:hover { transform: none; }
    .blog-item:active { transform: scale(0.98); }
    .btn-primary:hover { transform: none; }
}