:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --background-color: #F2F2F7;
    --card-background: #FFFFFF;
    --text-primary: #000000;
    --text-secondary: #6e6e73;
    --sidebar-width: 250px;
    --header-height: 60px;
    --border-radius: 10px;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--card-background);
    padding: 20px;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    height: 100vh;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
}

.nav-links li {
    margin-bottom: 10px;
}

.nav-links a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
}

.nav-links a:hover,
.nav-links .active a {
    background-color: var(--primary-color);
    color: white;
}

.nav-links i {
    width: 20px;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
}

.search-bar {
    display: flex;
    align-items: center;
    background-color: var(--background-color);
    padding: 10px 15px;
    border-radius: 20px;
    width: 300px;
}

.search-bar input {
    border: none;
    background: none;
    margin-left: 10px;
    outline: none;
    width: 100%;
}

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

/* Dashboard Content */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    gap: 15px;
    transition: transform var(--transition-speed);
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card i {
    font-size: 24px;
    color: var(--primary-color);
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.stat-info p {
    font-size: 24px;
    font-weight: 600;
}

.upcoming-reminders {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: var(--border-radius);
}

.upcoming-reminders h2 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        width: 70px;
        padding: 20px 10px;
    }

    .sidebar .logo span,
    .sidebar .nav-links span {
        display: none;
    }

    .main-content {
        margin-left: 70px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* Animation */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.dashboard-content {
    animation: fadeIn 0.5s ease-out;
}