body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #121212;
    color: #ffffff;
    display: flex;
    overflow: hidden;
}

.container {
    display: flex;
    height: 100vh;
    width: 100%;
    border: 1px solid #444444;
}

.sidebar {
    width: 20%;
    background-color: #181818;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transition: all 0.3s ease;
    border: 1px solid #444444;
}

.sidebar nav ul {
    list-style: none;
    padding: 0;
}

.sidebar-item {
    display: block;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    text-decoration: none;
    color: #ffffff;
    border: 1px solid #444444;
    transition: all 0.3s ease;
}

.sidebar-item:hover {
    background-color: #007bff;
    color: #ffffff;
    transform: translateX(5px);
    border-color: #007bff;
}

.search-bar {
    margin-top: 20px;
    display: flex;
    align-items: center;
    border: 1px solid #444444;
    padding: 5px;
    border-radius: 5px;
}

.search-bar input {
    flex: 1;
    padding: 8px;
    border: 1px solid #444444;
    border-radius: 4px;
    background-color: #222222;
    color: #ffffff;
    transition: all 0.3s ease;
}

.search-bar input:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
}

.search-button {
    margin-left: 10px;
    padding: 8px 15px;
    background-color: #007bff;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.search-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

.main-content {
    width: 80%;
    background-color: #181818;
    padding: 20px;
    overflow-y: auto;
    border: 1px solid #444444;
}

.header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.header-button {
    background-color: #007bff;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 8px 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.header-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    background-color: #222222;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
    border: 1px solid #444444;
}

.hidden {
    display: none;
}

.modal-content {
    text-align: center;
}

.modal-close {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 20px;
    cursor: pointer;
    color: #ffffff;
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: #ff4d4d;
    transform: scale(1.2);
}

.modal-button {
    background-color: #007bff;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    padding: 8px 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.modal-button:hover {
    background-color: #0056b3;
    transform: scale(1.05);
}

.email-field {
    display: flex;
    margin-bottom: 10px;
}

.email-field input {
    flex: 1;
    padding: 8px;
    border: 1px solid #444444;
    border-radius: 4px 0 0 4px;
    background-color: #222222;
    color: #ffffff;
    transition: all 0.3s ease;
}

.email-field input:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
}

.email-provider {
    padding: 8px;
    border: 1px solid #444444;
    border-left: none;
    border-radius: 0 4px 4px 0;
    background-color: #222222;
    color: #ffffff;
    transition: all 0.3s ease;
}

.email-provider:focus {
    border-color: #007bff;
    outline: none;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5);
}

#overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 999;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.down {
    position: relative;
    display: inline-block;
    text-decoration: none;
    color: white; 
    font-size: 1.6em; 
    font-weight: bold; 
    margin-bottom: 10px; 
}

.down::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 2px; 
    background: linear-gradient(to right, black, gray, white, gray, pink); 
    transition: height 0.3s ease; 
}

.down:hover::after {
    height: 4px;
}