body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f7f6;
    color: #333;
}

.top-nav {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #fff;
}

.logout-link a {
    color: #e74c3c;
    font-weight: bold;
}

.main-content {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-height: 400px;
}

.main-footer {
    text-align: center;
    padding: 1rem;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Auth / Login Styling */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #ecf0f1;
}

.login-card {
    background: #fff;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-card h2 {
    margin-top: 0;
    text-align: center;
    color: #2c3e50;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-sizing: border-box;
}

.btn {
    width: 100%;
    padding: 0.75rem;
    background-color: #3498db;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #2980b9;
}

.error-msg {
    background-color: #fdeaea;
    color: #e74c3c;
    padding: 0.75rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 0.9rem;
}