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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* Navbar Styles */
.navbar {
    background-color: #2c3e50;
    padding: 0 30px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-links {
    display: flex;
    gap: 5px;
}

.nav-link {
    color: #ffffff;
    text-decoration: none;
    font-size: 13px;
    font-weight: normal;
    padding: 0 15px;
    height: 50px;
    display: flex;
    align-items: center;
    transition: background-color 0.2s ease;
}

.nav-link:hover {
    background-color: #34495e;
}

.nav-link.active {
    background-color: #3498db;
}

/* Header Styles */
.header {
    background-color: #ffffff;
    padding: 15px 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-bottom: 1px solid #ddd;
    position: relative;
}

.welcome-message {
    display: flex;
    flex-direction: column;
    gap: 3px;
    align-items: center;
    text-align: center;
}

.welcome-text {
    font-size: 16px;
    font-weight: normal;
    color: #333;
}

.date-time {
    font-size: 12px;
    color: #666;
}

.settings-icon {
    cursor: pointer;
    color: #666;
    text-decoration: none;
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
}

.settings-icon:hover {
    color: #333;
}

/* Main Content Styles */
.main-content {
    padding: 25px 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.cards-container {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.card {
    flex: 1;
    background-color: #ffffff;
    border-radius: 4px;
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 130px;
    border: 1px solid #e0e0e0;
}

.card-title {
    font-size: 14px;
    font-weight: normal;
    color: #666;
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-number {
    font-size: 48px;
    font-weight: bold;
    color: #333;
}

/* Green Section Styles */
.green-section {
    background-color: #4caf50;
    border-radius: 4px;
    min-height: 180px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        padding: 0 15px;
        height: auto;
        flex-wrap: wrap;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 0;
        flex-wrap: wrap;
    }

    .nav-link {
        flex: 1;
        justify-content: center;
        font-size: 12px;
        padding: 0 10px;
        min-width: 80px;
    }

    .header {
        padding: 15px;
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .settings-icon {
        position: absolute;
        right: 15px;
        top: 50%;
        transform: translateY(-50%);
    }

    .main-content {
        padding: 20px 15px;
    }

    .cards-container {
        flex-direction: column;
        gap: 15px;
    }

    .card {
        min-height: 110px;
        padding: 20px;
    }

    .card-number {
        font-size: 40px;
    }

    .green-section {
        min-height: 150px;
    }
}

@media (max-width: 480px) {
    .nav-link {
        font-size: 11px;
        padding: 0 8px;
        min-width: 70px;
    }

    .welcome-text {
        font-size: 14px;
    }

    .date-time {
        font-size: 11px;
    }

    .card-number {
        font-size: 36px;
    }

    .card-title {
        font-size: 13px;
    }
}