:root {
    /* 颜色变量 */
    --primary-color: #1dbee6;
    --primary-color-light: rgba(29, 190, 230, 0.1);
    --primary-color-transparent: rgba(29, 190, 230, 0.3);
    --text-color: white;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --container-bg: rgba(15, 23, 42, 0.7);
    --container-radius: 20px;
    
    /* 新增深紫色系变量 */
    --purple-primary: #6b46c1;
    --purple-light: rgba(107, 70, 193, 0.1);
    --purple-transparent: rgba(107, 70, 193, 0.3);
    
    /* 媒体查询断点 */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    
    /* 动画时间 */
    --animation-duration: 0.3s;
    --animation-timing: cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html {
    height: 100%;
    overflow-y: auto;
}

body {
    min-height: 100vh;
    background-color: #050b1f;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    overflow-y: auto;
}

/* 全局滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(29, 190, 230, 0.8);
}

/* 背景粒子容器 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    border-radius: 0;
}

.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(29, 190, 230, 0.3);
    animation: float 15s infinite linear;
    will-change: transform, opacity;
    transform: translate3d(0, 0, 0);
    box-shadow: 0 0 10px rgba(29, 190, 230, 0.5);
}

@keyframes float {
    0% {
        transform: translate3d(0, 0, 0) rotate(0deg);
        opacity: 0.8;
    }
    100% {
        transform: translate3d(0, -1000px, 0) rotate(720deg);
        opacity: 0.2;
    }
}

/* 主容器 */
.container {
    width: 100%;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    border-radius: var(--container-radius);
    backdrop-filter: blur(10px);
    background: var(--container-bg);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--primary-color-transparent);
    position: relative;
    z-index: 2;
    overflow: hidden;
}

/* 左侧可视化区域 */
.login-visualization {
    flex: 1.2;
    min-width: 0;
    background: linear-gradient(135deg, #0a1828, #0d253f);
    padding: 40px;
    position: relative;
}

/* 右侧登录表单 */
.login-form {
    flex: 0.8;
    background-color: rgba(15, 23, 42, 0.5);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

/* 图片容器圆角 */
.image-container {
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(29, 190, 230, 0.1);
    border: 1px dashed var(--primary-color-transparent);
    border-radius: 10px;
    margin: 10px 0;
    overflow: hidden;
    position: relative;
    min-height: 300px;
}

.image-container::before {
    content: "请在此处插入系统展示图片";
    color: var(--text-secondary);
    font-size: 16px;
    position: absolute;
    z-index: 1;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 9px;
    position: relative;
    z-index: 2;
}

/* 响应式设计优化 */
@media (max-width: var(--breakpoint-lg)) {
    .container {
        flex-direction: column;
        border-radius: var(--container-radius);
    }
    
    .login-visualization, .login-form {
        border-radius: 0;
    }
    
    .login-visualization {
        border-top-left-radius: var(--container-radius);
        border-top-right-radius: var(--container-radius);
    }
    
    .login-form {
        border-bottom-left-radius: var(--container-radius);
        border-bottom-right-radius: var(--container-radius);
    }
}

@media (max-width: var(--breakpoint-sm)) {
    body {
        padding: 10px;
    }
    
    .container {
        max-height: none;
    }
    
    .login-visualization, .login-form {
        padding: 20px;
    }
    
    .form-header h1 {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .input-group input {
        padding: 10px 15px;
    }
    
    .input-icon {
        padding: 10px;
    }
    
    .image-container::before {
        font-size: 14px;
    }
    
    .social-btn {
        width: 40px;
        height: 40px;
    }
    
    .social-icon {
        font-size: 18px;
    }
}

/* 其他样式 */
.visualization-content {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    width: 100%;
}

.logo-wrapper {
    display: flex;
    align-items: center;
}

.logo {
    width: 40px;
    height: 40px;
    margin-right: 15px;
    filter: brightness(0) invert(1);
}

.company-name {
    color: var(--text-color);
    font-size: 24px;
    font-weight: 600;
}

.visualization-info {
    color: var(--text-color);
    padding: 30px 0;
    margin-bottom: 20px;
}

.visualization-info h2 {
    font-size: 26px;
    margin-bottom: 15px;
    background: linear-gradient(90deg, var(--primary-color), #3a8bff);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.visualization-info p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.tech-dots {
    display: flex;
    gap: 10px;
    margin-left: auto;
}

.tech-dot {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--primary-color-transparent);
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--animation-duration) var(--animation-timing);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-dot:hover {
    background: var(--primary-color-light);
    transform: translateY(-2px);
}

.tech-dot i {
    font-size: 18px;
    transition: transform var(--animation-duration) var(--animation-timing);
}

.tech-dot:hover i {
    transform: scale(1.1);
}

.form-decoration {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(29, 190, 230, 0.3), transparent 70%);
}

.form-header {
    margin-bottom: 40px;
}

.form-header h1 {
    color: var(--text-color);
    font-size: 28px;
    margin-bottom: 10px;
    font-weight: 600;
}

.form-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.input-group {
    margin-bottom: 25px;
    position: relative;
}

.input-group label {
    display: block;
    margin-bottom: 10px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 15px;
    padding-left: 45px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--primary-color-transparent);
    border-radius: 8px;
    font-size: 14px;
    color: var(--text-color);
    transition: all 0.3s;
}

.input-group input:focus {
    border-color: var(--primary-color);
    outline: none;
    background: var(--primary-color-light);
    box-shadow: 0 0 0 3px rgba(29, 190, 230, 0.1);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.4);
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 41px;
    color: rgba(29, 190, 230, 0.8);
    font-size: 18px;
}

.password-wrapper {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
}

.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.remember-me {
    display: flex;
    align-items: center;
}

.remember-me input {
    margin-right: 8px;
    position: relative;
    width: 16px;
    height: 16px;
    appearance: none;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid var(--primary-color-transparent);
    border-radius: 3px;
    cursor: pointer;
}

.remember-me input:checked::after {
    content: '✓';
    position: absolute;
    top: -1px;
    left: 2px;
    color: var(--primary-color);
    font-size: 14px;
}

.remember-me label {
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
}

.forgot-password {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--animation-duration) var(--animation-timing);
    font-size: 13px;
}

.forgot-password:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn {
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.btn-icon {
    margin-left: 8px;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-color), #3a8bff);
    color: white;
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: rotate(30deg);
    transition: 0.6s;
}

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

.btn-primary:hover {
    box-shadow: 0 10px 20px rgba(29, 190, 230, 0.3);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--primary-color-transparent);
}

.btn-outline:hover {
    background: var(--primary-color-light);
}

.divider {
    display: flex;
    align-items: center;
    margin: 25px 0;
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.divider::before {
    margin-right: 10px;
}

.divider::after {
    margin-left: 10px;
}

.social-login {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
    width: 100%;
}

.social-btn {
    flex: 1;
    height: 45px;
    border-radius: 8px;
    border: 1px solid var(--primary-color-transparent);
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--animation-duration) var(--animation-timing);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 5px;
}

.social-btn:first-child {
    margin-left: 0;
}

.social-btn:last-child {
    margin-right: 0;
}

.social-btn:hover {
    background: var(--primary-color-light);
    transform: translateY(-2px);
}

.social-btn i {
    font-size: 20px;
    transition: transform var(--animation-duration) var(--animation-timing);
}

.social-btn:hover i {
    transform: scale(1.1);
}

.footer {
    margin-top: 30px;
    text-align: center;
    color: var(--text-secondary);
}

.footer p {
    margin: 5px 0;
    font-size: 13px;
}

.icp {
    font-size: 12px;
    opacity: 0.7;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.icp a {
    color: inherit;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 4px;
}

.icp a:hover {
    text-decoration: none;
    opacity: 0.9;
}

.beian-icon {
    height: 1em;
    width: auto;
    vertical-align: middle;
    display: inline-block;
}

.icp-divider {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* 错误提示样式 */
.form-error {
    color: #ff4444;
    background: rgba(255, 68, 68, 0.1);
    padding: 10px;
    border-radius: 5px;
    margin: 10px 0;
    font-size: 14px;
}

.wechat-wrapper {
    position: relative;
    display: inline-block;
}

.qrcode-popup {
    position: absolute;
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    background: #ffffff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    opacity: 0;
    visibility: hidden;
    transition: all var(--animation-duration) var(--animation-timing);
    z-index: 10;
    width: 150px;
    text-align: center;
}

.qrcode-popup::after {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid #ffffff;
    border-top: none;
}

.qrcode-popup img {
    width: 120px;
    height: 120px;
    border-radius: 5px;
    margin-bottom: 8px;
}

.qrcode-popup p {
    color: #333333;
    font-size: 12px;
    margin: 0;
}

.wechat-wrapper:hover .qrcode-popup {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(10px);
}

/* 导航菜单样式 */
.main-nav {
    margin: 0;
    padding: 0;
    width: 100%;
}

.nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-between;
    gap: 10px;
}

.nav-item {
    flex: 1;
    margin: 0;
}

.nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 12px 10px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all var(--animation-duration) var(--animation-timing);
    background: rgba(29, 190, 230, 0.05);
    border: 1px solid transparent;
    text-align: center;
    height: 100%;
}

.nav-link:hover {
    color: var(--text-color);
    background: var(--primary-color-light);
    border-color: var(--primary-color-transparent);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(29, 190, 230, 0.2);
}

.nav-link i, .nav-link .nav-logo {
    margin: 0 0 8px 0;
    font-size: 20px;
    width: auto;
    height: 20px;
    object-fit: contain;
    filter: brightness(0) invert(1) opacity(0.7);
    transition: all var(--animation-duration) var(--animation-timing);
}

.nav-link:hover i, .nav-link:hover .nav-logo {
    filter: brightness(0) invert(1) opacity(1);
}

.nav-link span {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.2;
}

/* 海德洛智水按钮特殊样式 */
.nav-item:last-child {
    position: relative;
}

.nav-item:last-child .nav-link {
    background: linear-gradient(90deg, var(--purple-primary), #8b5cf6);
    color: white;
    position: relative;
    overflow: hidden;
}

.nav-item:last-child .nav-link::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: rotate(30deg);
    transition: 0.6s;
}

.nav-item:last-child .nav-link:hover::after {
    left: 100%;
}

.nav-item:last-child .nav-link:hover {
    box-shadow: 0 10px 20px rgba(107, 70, 193, 0.3);
    transform: translateY(-2px);
}

.nav-item:last-child .nav-link .nav-logo {
    filter: brightness(0) invert(1) opacity(1);
    margin: 0 0 8px 0;
    height: 20px;
    width: auto;
}

.nav-item:last-child .nav-link span {
    color: white;
    font-weight: 600;
    font-size: 14px;
    line-height: 1.2;
}

/* 海德洛智水悬浮窗样式 */
.hydrolink-tooltip {
    position: absolute;
    bottom: calc(100% + 20px);
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 12px;
    border: none;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    pointer-events: none;
}

.hydrolink-tooltip::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-top: 10px solid rgba(255, 255, 255, 0.95);
}

.hydrolink-tooltip h3 {
    color: #333;
    font-size: 20px;
    margin-bottom: 12px;
    background: linear-gradient(90deg, var(--purple-primary), #8b5cf6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hydrolink-tooltip p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.nav-item:last-child:hover .hydrolink-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
    transition: opacity 0.2s ease-out, visibility 0.2s ease-out, transform 0.2s ease-out;
}

@media (max-width: var(--breakpoint-sm)) {
    .hydrolink-tooltip {
        width: 260px;
        padding: 15px;
    }
    
    .hydrolink-tooltip h3 {
        font-size: 18px;
        margin-bottom: 8px;
    }
    
    .hydrolink-tooltip p {
        font-size: 13px;
    }
}

/* 响应式调整 */
@media (max-width: var(--breakpoint-lg)) {
    .logo-area {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .tech-dots {
        margin-left: 0;
        width: 100%;
        justify-content: flex-end;
    }
    
    .visualization-info {
        padding: 20px 0;
    }
    
    .visualization-info h2 {
        font-size: 24px;
    }
    
    .visualization-info p {
        font-size: 14px;
    }
    
    .nav-list {
        gap: 8px;
    }
    
    .nav-link {
        padding: 10px 8px;
    }
    
    .nav-link i, .nav-link .nav-logo {
        font-size: 18px;
        height: 18px;
        margin-bottom: 6px;
    }
    
    .nav-link span {
        font-size: 13px;
    }
}

@media (max-width: var(--breakpoint-sm)) {
    .logo-area {
        margin-bottom: 30px;
    }
    
    .tech-dot {
        width: 35px;
        height: 35px;
    }
    
    .tech-dot i {
        font-size: 16px;
    }
    
    .visualization-info {
        padding: 15px 0;
        margin-bottom: 15px;
    }
    
    .visualization-info h2 {
        font-size: 22px;
        margin-bottom: 10px;
    }
    
    .visualization-info p {
        font-size: 13px;
    }
    
    .nav-list {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .nav-item {
        flex: 1 1 calc(50% - 5px);
    }
    
    .nav-link {
        padding: 8px 5px;
    }
    
    .nav-link i, .nav-link .nav-logo {
        font-size: 16px;
        height: 16px;
        margin-bottom: 4px;
    }
    
    .nav-link span {
        font-size: 12px;
    }
}