/* ========================================
   知辰在线工具网 - 智能导航系统
   ======================================== */

/* ========================================
   顶部导航栏 - 升级版
   ======================================== */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 70px;
    background: rgba(15, 28, 63, 0.98);
    backdrop-filter: blur(30px);
    border-bottom: 1px solid rgba(0, 198, 255, 0.2);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.nav-container {
    max-width: 1920px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    gap: 40px;
}

/* Logo区域 */
.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    font-weight: 700;
    color: var(--text-primary);
    cursor: pointer;
    transition: transform var(--transition-fast);
    flex-shrink: 0;
}

.logo:hover {
    transform: scale(1.02);
}

.logo:hover .logo-icon {
    transform: scale(1.1);
}

.logo-main {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 40px;
    animation: rotate-glow 4s linear infinite;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.logo-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    justify-content: center;
}

.logo-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 24px;
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.5px;
}

.logo-subtitle {
    font-size: 10px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.45);
    opacity: 0.9;
    line-height: 1.2;
    white-space: nowrap;
    letter-spacing: 0.5px;
}

.logo-badge {
    padding: 6px 14px;
    background: linear-gradient(135deg, rgba(0, 198, 255, 0.2) 0%, rgba(0, 128, 255, 0.15) 100%);
    border: 1px solid rgba(0, 198, 255, 0.4);
    border-radius: 18px;
    font-size: 12px;
    color: #00C6FF;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 198, 255, 0.2);
    transition: all var(--transition-fast);
}

.logo-badge:hover {
    background: linear-gradient(135deg, rgba(0, 198, 255, 0.3) 0%, rgba(0, 128, 255, 0.2) 100%);
    box-shadow: 0 4px 12px rgba(0, 198, 255, 0.3);
    transform: scale(1.05);
}

/* 主导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    color: var(--gray-300);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: 8px;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent);
    background: rgba(0, 198, 255, 0.1);
}

.nav-icon {
    font-size: 16px;
}

.dropdown-arrow {
    font-size: 10px;
    transition: transform var(--transition-fast);
}

.nav-item.has-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    min-width: 200px;
    background: rgba(15, 28, 63, 0.98);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(0, 198, 255, 0.3);
    border-radius: 12px;
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    z-index: 100;
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: block;
    padding: 10px 15px;
    color: var(--gray-300);
    text-decoration: none;
    font-size: 13px;
    border-radius: 6px;
    transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
    background: rgba(0, 198, 255, 0.15);
    color: var(--accent);
    transform: translateX(5px);
}

/* 超大下拉菜单 */
.mega-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    width: 800px;
    background: rgba(15, 28, 63, 0.98);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(0, 198, 255, 0.3);
    border-radius: 16px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    z-index: 100;
}

.nav-item:hover .mega-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.dropdown-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 30px;
}

.dropdown-section h4 {
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(0, 198, 255, 0.2);
}

.dropdown-section a {
    display: block;
    padding: 8px 12px;
    color: var(--gray-300);
    text-decoration: none;
    font-size: 13px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    margin-bottom: 4px;
}

.dropdown-section a:hover {
    background: rgba(0, 198, 255, 0.15);
    color: var(--accent);
    transform: translateX(5px);
}

.dropdown-footer {
    padding: 15px 30px;
    border-top: 1px solid rgba(0, 198, 255, 0.2);
    text-align: center;
}

.view-all-btn {
    display: inline-block;
    padding: 10px 24px;
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    transition: all var(--transition-fast);
}

.view-all-btn:hover {
    box-shadow: 0 5px 20px rgba(0, 198, 255, 0.4);
    transform: translateY(-2px);
}

/* 右侧操作区 */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.live-stats {
    padding: 8px 16px;
    background: rgba(0, 217, 163, 0.1);
    border: 1px solid rgba(0, 217, 163, 0.3);
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.stat-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.3);
    }
}

.stat-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
}

.nav-btn {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(0, 198, 255, 0.1);
    border: 1px solid rgba(0, 198, 255, 0.3);
    border-radius: 20px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    background: rgba(0, 198, 255, 0.2);
    box-shadow: var(--glow-blue);
    transform: translateY(-2px);
}

.nav-btn.primary {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
}

.nav-btn.primary:hover {
    box-shadow: var(--glow-accent);
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--error);
    color: white;
    font-size: 10px;
    font-weight: 700;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ========================================
   实时数据状态栏
   ======================================== */
.status-bar {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    height: 45px;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 198, 255, 0.15);
    z-index: 999;
}

.status-container {
    max-width: 1920px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    padding: 0 40px;
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-icon {
    font-size: 16px;
}

.status-label {
    font-size: 12px;
    color: var(--gray-400);
}

.status-value {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    min-width: 50px;
    text-align: right;
    font-family: 'Courier New', monospace;
}

.status-online-badge {
    padding: 4px 12px;
    background: rgba(0, 217, 163, 0.2);
    border: 1px solid rgba(0, 217, 163, 0.3);
    border-radius: 12px;
    color: var(--success);
    font-size: 11px;
}

.status-divider {
    width: 1px;
    height: 20px;
    background: linear-gradient(to bottom, transparent, rgba(0, 198, 255, 0.3), transparent);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1400px) {
    .dropdown-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .mega-dropdown {
        width: 700px;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        display: none;
    }
    
    .status-container {
        gap: 15px;
        font-size: 12px;
    }
    
    .status-label {
        display: none;
    }
    
    /* 添加移动菜单按钮 */
    .mobile-menu-btn {
        display: block;
        width: 40px;
        height: 40px;
        background: rgba(0, 198, 255, 0.1);
        border: 1px solid rgba(0, 198, 255, 0.3);
        border-radius: 8px;
        color: var(--accent);
        font-size: 20px;
        cursor: pointer;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 20px;
        gap: 20px;
    }
    
    .logo-badge,
    .live-stats {
        display: none;
    }
    
    .status-bar {
        height: 40px;
    }
    
    .status-container {
        gap: 10px;
        justify-content: space-around;
    }
    
    .status-icon {
        font-size: 14px;
    }
    
    .status-value {
        font-size: 12px;
        min-width: 40px;
    }
}

/* ========================================
   滚动时的导航栏状态
   ======================================== */
.top-nav.scrolled {
    height: 60px;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.top-nav.scrolled .logo-icon {
    font-size: 28px;
}

.top-nav.scrolled .logo-text {
    font-size: 20px;
}

.top-nav.hidden {
    transform: translateY(-100%);
}