/* Modern Flat Design */
body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background-color: #f4f6f9;
    display: flex;
}

.sidebar {
    width: 250px;
    background-color: #1e293b;
    color: white;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.sidebar h2 {
    margin-bottom: 30px;
}

.sidebar button {
    background-color: #334155;
    border: none;
    color: white;
    padding: 15px;
    margin-bottom: 15px;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.sidebar button:hover {
    background-color: #475569;
}

.logout {
    margin-top: auto;
    background-color: #dc2626;
}

.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: linear-gradient(135deg, #1e3a8a, #2563eb);
}

.login-container {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.login-container h2 {
    margin-bottom: 20px;
}

.login-container input {
    display: block;
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 8px;
}

.login-container button {
    background-color: #2563eb;
    color: white;
    padding: 12px;
    border: none;
    width: 100%;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
}

.login-container button:hover {
    background-color: #1e40af;
}

.progress-bar {
    background-color: #e2e8f0;
    border-radius: 8px;
    height: 25px;
    overflow: hidden;
}

.progress-bar div {
    background-color: #16a34a;
    height: 100%;
    transition: width 0.5s ease;
}