:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    margin: 0;
}

.container {
    max-width: 1100px;
    margin: auto;
    overflow: hidden;
    padding: 0 2rem;
}

.navbar {
    background-color: var(--dark-color);
    color: #fff;
    padding: 1rem 0;
}

.navbar-brand {
    color: #fff;
    font-size: 1.5rem;
    text-decoration: none;
}

.navbar-nav {
    float: right;
    list-style: none;
    margin: 0;
}

.nav-item {
    display: inline-block;
    margin-left: 1.5rem;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
}

.hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://images.pexels.com/photos/1015568/pexels-photo-1015568.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding: 6rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #fff;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
}

#login-section {
    padding: 4rem 0;
}

#login-form {
    max-width: 400px;
    margin: auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.8rem;
    font-size: 1rem;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.footer {
    background-color: var(--dark-color);
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    position: relative;
    bottom: 0;
    width: 100%;
}

#dashboard-section {
    padding: 4rem 0;
}

#core-features {
    margin-bottom: 1rem;
    text-align: center;
}

.feature-button {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border: none;
    cursor: pointer;
    margin: 0.5rem;
    border-radius: 5px;
    font-size: 1.1rem;
}

#feature-content {
    margin-top: 2rem;
    padding: 2rem;
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}