:root {
    --text-color: #383838;
    --main-hue: 100;
    --main-saturation: 49%;
    --main-lightness: 47%;
    --main-color: hsl(var(--main-hue), var(--main-saturation), var(--main-lightness));
    --main-color-dark: hsl(var(--main-hue), var(--main-saturation), 40%);
    --main-color-light: hsl(var(--main-hue), var(--main-saturation), 70%);
    
    --unified-max-width: 1150px;
    --unified-padding: 0 20px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 10px 0;
}

/* 主要布局：左侧组合 + 右侧 */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* 左侧组合：logo + 城市 */
.left-section {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-left: 50px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.logo-info {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: var(--main-color);
}

.logo-url {
    color: var(--main-color);
    font-size: 13px;
}

/* 中间：城市选择 - 现在在左侧组合中 */
.show-city {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.location {
    font-size: 16px;
    color: #666;
    font-weight: 500;
}

.change-location a {
    color: var(--main-color);
    text-decoration: none;
    font-size: 13px;
}

/* 右侧：上下两栏 */
.right-section {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 8px;
}

/* 右下：导航菜单 - 增大 */
.nav-menu ul {
    display: flex;
    list-style: none;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s;
    padding: 5px 0;
    position: relative;
}

.nav-menu a:hover {
    color: var(--main-color);
}

.nav-menu a.active {
    color: var(--main-color);
    border-bottom: 2px solid var(--main-color);
    font-weight: 500;
}

/* 右上：功能按钮区域 - 缩小 */
.auth-buttons {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 2px;
}

.btn-bx, .head-btn {
    padding: 3px 8px;
    border: 1px solid #ccc;
    border-radius: 3px;
    font-size: 12px;
    text-decoration: none;
    color: #333;
    transition: all 0.3s;
    position: relative;
    background: white;
    display: inline-block;
}

.btn-bx:hover, .head-btn:hover {
    border-color: var(--main-color);
    color: var(--main-color);
}

.btn-bx .badge {
    position: absolute;
    top: 0;
    right: 0;
    background: #ff4757;
    color: white;
    border-radius: 50%;
    transform: translate(50%, -50%);
    /* width: 16px; */
    min-width: 16px;
    height: 16px;
    padding: 0 5px;
    /* line-height: 1; */
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: bold;
    z-index: 10;
}

/* 移动端菜单切换按钮 */
.menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    cursor: pointer;
    z-index: 1001;
    border-radius: 6px;
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid rgba(76, 175, 80, 0.2);
    transition: all 0.3s ease;
    position: relative;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.menu-toggle span {
    width: 20px;
    height: 2px;
    background: var(--main-color);
    border-radius: 1px;
    transition: all 0.3s ease;
    display: block;
}

.menu-toggle:hover {
    background: rgba(76, 175, 80, 0.15);
    border-color: rgba(76, 175, 80, 0.3);
    transform: scale(1.05);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu-container {
    display: none;
}

/* 移动端适配 */
@media (max-width: 900px) {
    .left-section {
        gap: 15px;
    }

    .menu-toggle {
        display: flex;
    }

    .right-section {
        display: none;
    }

    .mobile-menu-container {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        border-left: 1px solid #eee;
        transition: right 0.3s ease;
        z-index: 1000;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        display: flex;
        flex-direction: column;
    }

    .mobile-menu-container.active {
        right: 0;
    }

    .mobile-nav-menu {
        flex: 1;
        padding: 80px 30px 30px;
        overflow-y: auto;
    }

    .mobile-nav-menu ul {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .mobile-nav-menu li {
        border-bottom: 1px solid #f0f0f0;
    }

    .mobile-nav-menu li:last-child {
        border-bottom: none;
    }

    .mobile-nav-menu a {
        display: block;
        padding: 15px 0;
        font-size: 16px;
        color: #333;
        text-decoration: none;
        position: relative;
        overflow: hidden;
        transition: all 0.3s ease;
    }

    .mobile-nav-menu a:hover {
        color: var(--main-color);
        background: rgba(76, 175, 80, 0.05);
        padding-left: 10px;
    }

    .mobile-nav-menu a::before {
        content: '';
        position: absolute;
        left: -100%;
        top: 0;
        width: 3px;
        height: 100%;
        background: linear-gradient(45deg, var(--main-color), var(--main-color-dark));
        transition: left 0.3s ease;
    }

    .mobile-nav-menu a:hover::before {
        left: 0;
    }

    .mobile-auth-section {
        padding: 15px 30px 20px;
        border-top: 2px solid #f0f0f0;
        background: rgba(255, 255, 255, 0.95);
    }

    .mobile-auth-section .nav-menu-btn {
        display: block;
        width: 100%;
        padding: 8px 12px;
        margin: 5px 0;
        background: transparent;
        border: 1px solid var(--main-color);
        border-radius: 3px;
        color: var(--main-color);
        text-decoration: none;
        text-align: center;
        font-weight: 500;
        font-size: 14px;
        transition: all 0.3s ease;
        position: relative;
        overflow: visible;
    }

    .mobile-auth-section .nav-menu-btn:hover {
        background: var(--main-color);
        color: #fff;
    }

    .mobile-auth-section .nav-menu-btn.btn-special {
        background: var(--main-color);
        color: #fff;
        border: 1px solid var(--main-color);
    }

    .mobile-auth-section .nav-menu-btn.btn-special:hover {
        background: var(--main-color-dark);
        border: 1px solid var(--main-color-dark);
    }

    .mobile-auth-section .nav-menu-btn.btn-special .badge {
        position: absolute;
        top: -8px;
        right: -8px;
        background: #ff4757;
        color: #fff;
        border-radius: 50%;
        width: 18px;
        height: 18px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 10px;
        font-weight: bold;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    }
}

/* 菜单遮罩层 */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.menu-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 菜单项动画效果 */
@media (max-width: 900px) {
    .mobile-menu-container.active li {
        opacity: 0;
        transform: translateX(50px);
        animation: slideIn 0.3s ease forwards;
    }

    .mobile-menu-container.active li:nth-child(1) { animation-delay: 0.1s; }
    .mobile-menu-container.active li:nth-child(2) { animation-delay: 0.15s; }
    .mobile-menu-container.active li:nth-child(3) { animation-delay: 0.2s; }
    .mobile-menu-container.active li:nth-child(4) { animation-delay: 0.25s; }
    .mobile-menu-container.active li:nth-child(5) { animation-delay: 0.3s; }
    .mobile-menu-container.active li:nth-child(6) { animation-delay: 0.35s; }
    .mobile-menu-container.active li:nth-child(7) { animation-delay: 0.4s; }
}

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 平板适配 */
@media (max-width: 1024px) and (min-width: 901px) {
    .container {
        padding: 0 15px;
    }

    .nav-menu ul {
        gap: 20px;
    }

    .nav-menu a {
        font-size: 13px;
    }

    .auth-buttons {
        gap: 8px;
    }

    .auth-buttons .head-btn, .auth-buttons .btn-bx {
        padding: 4px 8px;
        font-size: 13px;
    }
}

/* 小屏手机适配 */
@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .logo img {
        width: 35px;
        height: 35px;
    }

    .logo-text {
        font-size: 14px;
    }

    .logo-url {
        font-size: 10px;
    }

    .mobile-menu-container {
        width: 270px;
    }

    .mobile-nav-menu {
        padding: 70px 20px 20px;
    }

    .mobile-auth-section .nav-menu-btn {
        padding: 10px 12px;
        font-size: 14px;
    }
}