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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

#dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.dashboard-header {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.dashboard-header h1 {
    color: #333;
    font-size: 2rem;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.user-info span {
    color: #666;
    font-size: 0.9rem;
}

.dashboard-nav {
    background: rgba(255, 255, 255, 0.9);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.nav-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    background: #f8f9fa;
    color: #333;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-btn:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

.nav-btn.active {
    background: #667eea;
    color: white;
}

.dashboard-main {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    padding: 30px;
    min-height: 500px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

#module-container {
    width: 100%;
    height: 100%;
}

.module {
    display: none;
}

.module.active {
    display: block;
}

.module h2 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.module-content {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}