/* Health-Family 封面页样式 */

:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --accent-color: #e74c3c;
    --warning-color: #f39c12;
    --purple-color: #9b59b6;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-health: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow-x: hidden;
    background: #0f0c29;
    background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
    min-height: 100vh;
    position: relative;
}

/* 动态背景 */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.8) 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(240, 147, 251, 0.6) 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
    animation-delay: 7s;
}

.orb-3 {
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.7) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

/* 浮动图标 */
.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    color: rgba(255, 255, 255, 0.1);
    font-size: 3rem;
    animation: floatShape 15s ease-in-out infinite;
}

.shape-1 {
    top: 10%;
    left: 15%;
    animation-delay: 0s;
}

.shape-2 {
    top: 60%;
    left: 80%;
    animation-delay: 3s;
}

.shape-3 {
    top: 30%;
    right: 10%;
    animation-delay: 6s;
}

.shape-4 {
    bottom: 20%;
    left: 10%;
    animation-delay: 9s;
}

.shape-5 {
    top: 70%;
    left: 50%;
    animation-delay: 12s;
}

.shape-6 {
    top: 20%;
    left: 60%;
    animation-delay: 15s;
}

@keyframes floatShape {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.1;
    }
    50% {
        transform: translateY(-30px) rotate(180deg);
        opacity: 0.2;
    }
}

/* 主容器 */
.cover-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    gap: 0;
}

/* Logo 区域 */
.logo-section {
    text-align: center;
    margin-bottom: 0.8rem;
}

.logo-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 0.5rem;
}

.logo-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.5);
    animation: pulse 2s ease-in-out infinite;
    z-index: 2;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.05);
    }
}

.logo-rings {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 50%;
    animation: ripple 3s ease-out infinite;
}

.ring-1 {
    width: 100px;
    height: 100px;
    animation-delay: 0s;
}

.ring-2 {
    width: 120px;
    height: 120px;
    animation-delay: 1s;
}

.ring-3 {
    width: 140px;
    height: 140px;
    animation-delay: 2s;
}

@keyframes ripple {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 1;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0;
    }
}

/* 品牌标题 */
.brand-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.2rem;
    letter-spacing: 2px;
}

.brand-health {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-separator {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0.5rem;
}

.brand-family {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand-subtitle {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.4rem;
    font-weight: 300;
}

.brand-tagline {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    color: white;
    font-size: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tagline-icon {
    font-size: 1rem;
    color: #f5576c;
}

/* 特色功能网格 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
    width: 100%;
    margin-bottom: 3rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1rem;
    background: var(--feature-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.feature-card h3 {
    color: white;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 登录区域 */
.login-section {
    text-align: center;
    margin-bottom: 1rem;
    max-width: 380px;
    width: 100%;
}

.login-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 1.2rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    margin-bottom: 0.8rem;
}

.login-header {
    margin-bottom: 1rem;
}

.login-header h2 {
    color: white;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.2rem;
}

.login-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
}

.login-form {
    text-align: left;
}

.form-group {
    margin-bottom: 0.8rem;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.form-group label i {
    color: #667eea;
}

.form-input {
    width: 100%;
    padding: 0.6rem 0.9rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    outline: none;
}

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

.form-input:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.password-wrapper {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    padding: 0.5rem;
    transition: color 0.3s ease;
}

.toggle-password:hover {
    color: rgba(255, 255, 255, 0.8);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.8rem;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.forgot-password {
    color: #667eea;
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #764ba2;
}

.login-button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.7rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
    cursor: pointer;
}

.login-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.6);
}

.button-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.login-button:hover .button-glow {
    left: 100%;
}

.button-icon {
    transition: transform 0.3s ease;
}

.login-button:hover .button-icon {
    transform: translateX(5px);
}

.divider {
    position: relative;
    text-align: center;
    margin: 0.8rem 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
}

.divider span {
    position: relative;
    background: rgba(255, 255, 255, 0.08);
    padding: 0 1rem;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
}

.guest-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.7rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.guest-button:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.login-footer {
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-footer p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
}

.register-link {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.register-link:hover {
    color: #764ba2;
}

.quick-stats {
    display: flex;
    justify-content: center;
    gap: 1.2rem;
    margin-top: 0.8rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
}

.stat-item i {
    color: #2ecc71;
}

/* 健康指标圆圈 */
.health-metrics {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 0;
}

.metric-circle {
    position: absolute;
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: floatMetric 10s ease-in-out infinite;
}

.metric-1 {
    top: 15%;
    left: 5%;
    animation-delay: 0s;
}

.metric-2 {
    bottom: 20%;
    right: 8%;
    animation-delay: 3s;
}

.metric-3 {
    top: 50%;
    right: 5%;
    animation-delay: 6s;
}

.metric-content {
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.metric-content i {
    display: block;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.metric-content span {
    font-size: 0.8rem;
}

@keyframes floatMetric {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* 底部信息 */
.footer-info {
    text-align: center;
    margin-top: 0.5rem;
}

.footer-text {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* 粒子画布 */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* 动画延迟 */
.fade-in-up {
    animation: fadeInUp 1s ease-out forwards;
    opacity: 0;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .brand-title {
        font-size: 2.5rem;
    }

    .brand-subtitle {
        font-size: 1.2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .feature-card {
        padding: 1.5rem;
    }

    .enter-button {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }

    .quick-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .health-metrics {
        display: none;
    }

    .logo-wrapper {
        width: 120px;
        height: 120px;
    }

    .logo-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .brand-title {
        font-size: 2rem;
    }

    .brand-tagline {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }

    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .feature-card h3 {
        font-size: 1.1rem;
    }

    .feature-card p {
        font-size: 0.85rem;
    }
}