/* Office AI 导航栏样式 */
:root {
    --nav-height: 70px;
    --nav-bg: rgba(255, 255, 255, 0.95);
    --nav-border: rgba(0, 0, 0, 0.08);
    --nav-text: #252525;
    --nav-text-hover: #217346;
    --nav-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

/* 导航栏容器 */
.main-navigation {
    position: sticky;
    top: 0;
    z-index: 999;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--nav-border);
    box-shadow: var(--nav-shadow);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo区域 */
.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--nav-text);
    font-weight: 700;
    font-size: 1.25rem;
    transition: color 0.3s ease;
}

.nav-logo:hover {
    color: var(--nav-text-hover);
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, #217346 0%, #2b579a 50%, #d24726 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(33, 115, 70, 0.25);
}

.nav-logo-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    background: linear-gradient(135deg, #217346 0%, #2b579a 50%, #d24726 100%);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 12px;
    margin-left: 0.5rem;
    box-shadow: 0 2px 8px rgba(33, 115, 70, 0.3);
    animation: pulse 2s ease-in-out infinite;
    cursor: help;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(33, 115, 70, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 4px 12px rgba(33, 115, 70, 0.5);
    }
}

.demand-nav-link {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.15), rgba(255, 152, 0, 0.15)) !important;
    border: 1px solid rgba(255, 193, 7, 0.3) !important;
}

.demand-nav-link:hover {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.25), rgba(255, 152, 0, 0.25)) !important;
    border-color: rgba(255, 193, 7, 0.5) !important;
    color: #ff9800 !important;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.25rem;
    color: var(--nav-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--nav-text-hover);
    background: rgba(33, 115, 70, 0.08);
}

.nav-link.active {
    color: var(--nav-text-hover);
    background: rgba(33, 115, 70, 0.12);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 3px;
    background: linear-gradient(90deg, #217346, #2b579a, #d24726);
    border-radius: 3px 3px 0 0;
}

.nav-link i {
    font-size: 0.9rem;
}

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--nav-text);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 1.5rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--nav-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: stretch;
        padding: 1rem;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border-bottom: 1px solid var(--nav-border);
    }

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

    .nav-item {
        width: 100%;
    }

    .nav-link {
        width: 100%;
        padding: 1rem 1.25rem;
        border-radius: 8px;
        justify-content: flex-start;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-logo {
        font-size: 1.1rem;
    }

    .nav-logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
}

/* 针对首页的特殊处理 - 确保不遮挡原有按钮 */
.hero .main-navigation {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.hero .main-navigation .nav-link {
    color: rgba(255, 255, 255, 0.92);
}

.hero .main-navigation .nav-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.18);
}

.hero .main-navigation .nav-link.active {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.25);
}

.hero .main-navigation .nav-link.active::after {
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.6));
}

.hero .main-navigation .nav-logo {
    color: rgba(255, 255, 255, 0.98);
}

.hero .main-navigation .nav-logo:hover {
    color: #ffffff;
}

.hero .main-navigation .nav-logo-icon {
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.3);
}

.hero .main-navigation .nav-toggle span {
    background: rgba(255, 255, 255, 0.92);
}

.hero .main-navigation.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.hero .main-navigation.scrolled .nav-link {
    color: var(--nav-text);
}

.hero .main-navigation.scrolled .nav-link:hover,
.hero .main-navigation.scrolled .nav-link.active {
    color: var(--nav-text-hover);
    background: rgba(33, 115, 70, 0.12);
}

.hero .main-navigation.scrolled .nav-logo {
    color: var(--nav-text);
}

.hero .main-navigation.scrolled .nav-toggle span {
    background: var(--nav-text);
}

/* 滚动时的导航栏效果 */
.main-navigation.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.12);
    background: rgba(255, 255, 255, 0.98);
}

/* 动画效果 */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-navigation {
    animation: fadeInDown 0.5s ease;
}