@import url('https://fonts.googleapis.com/css2?family=SF+Pro+Display:wght@300;400;500;600&display=swap');

:root {
    --primary-color: #0066ff;
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    --transition-speed: 0.3s;
}

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

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #2a2a72 0%, #009ffd 74%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    overflow: hidden;
}

.container {
    display: flex;
    width: 90%;
    height: 85vh;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    overflow: hidden;
}

.sidebar {
    width: var(--sidebar-width);
    height: 100%;
    padding: 30px 15px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-speed) ease;
    position: relative;
}

.logo {
    text-align: center;
    margin-bottom: 40px;
}

.logo i {
    font-size: 36px;
    color: #fff;
    opacity: 0.9;
}

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

.menu li {
    margin-bottom: 8px;
    border-radius: 16px;
    transition: all 0.2s ease;
    position: relative;
}

.menu li:hover {
    background: rgba(255, 255, 255, 0.2);
}

.menu li.active {
    background: rgba(255, 255, 255, 0.25);
}

.menu li.active::before {
    content: '';
    position: absolute;
    left: -15px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 0 4px 4px 0;
}

.menu a {
    display: flex;
    align-items: center;
    color: #fff;
    padding: 12px 16px;
    text-decoration: none;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.menu a i {
    font-size: 20px;
    margin-right: 14px;
    min-width: 22px;
    text-align: center;
}

.profile {
    margin-top: auto;
    display: flex;
    align-items: center;
    padding: 16px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    overflow: hidden;
    margin-right: 12px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-info h3 {
    font-size: 16px;
    font-weight: 500;
    margin-bottom: 2px;
}

.user-info p {
    font-size: 12px;
    opacity: 0.8;
}

.content {
    flex: 1;
    padding: 40px;
    overflow-y: auto;
}

header {
    margin-bottom: 30px;
}

header h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 8px;
}

header p {
    font-size: 16px;
    opacity: 0.8;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
    margin-top: 30px;
}

.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
}

.card-icon i {
    font-size: 22px;
}

.card-info h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-info p {
    font-size: 14px;
    opacity: 0.8;
}

/* Apple-style liquid effects */
.menu li::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 16px;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0);
    transition: box-shadow 0.3s ease;
}

.menu li:hover::after {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.3);
}

@media (max-width: 1024px) {
    .sidebar {
        width: var(--sidebar-collapsed-width);
    }
    
    .menu a span, 
    .user-info {
        display: none;
    }
    
    .profile {
        justify-content: center;
    }
    
    .avatar {
        margin-right: 0;
    }
    
    .content {
        padding: 30px;
    }
    
    .card-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        width: 95%;
        height: 90vh;
    }
    
    .card-container {
        grid-template-columns: 1fr;
    }
}