body {
    background: #0f172a;
    color: #fff;
    font-family: 'Segoe UI', sans-serif;
}

.sidebar {
    width: 220px;
    min-height: 100vh;
    background: #111827;
}

.menu-link {
    display: block;
    color: #9ca3af;
    padding: 10px 0;
    text-decoration: none;
}

.menu-link:hover {
    color: #fff;
}

.content {
    flex: 1;
}

.dark-card {
    background: #1f2937;
    border: none;
    color: #fff;
}

.login-bg {
    background: radial-gradient(circle at top right, #1e293b, #0f172a);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-wrapper {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.login-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.logo-icon {
    font-size: 2.25rem;
    color: #3b82f6;
    filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.4));
    line-height: 1;
    margin-bottom: 0;
}

.login-logo h1 {
    font-size: 1.85rem;
    font-weight: 800;
    margin: 0;
    line-height: 1;
    letter-spacing: -0.01em;
    color: #fff;
    text-transform: uppercase;
}

.login-logo h1 span {
    color: #3b82f6;
}

.login-logo p {
    font-size: 0.7rem;
    color: #64748b;
    font-weight: 700;
    letter-spacing: 0.4em;
    margin: 0.75rem 0 0 0;
    text-transform: uppercase;
    opacity: 0.7;
    width: 100%;
    text-align: center;
}

.login-box {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 2.5rem;
    border-radius: 24px;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.login-box .form-control {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    border-radius: 12px;
}

.login-box .form-control:focus {
    background: rgba(15, 23, 42, 0.8);
    border-color: #3b82f6;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
    color: #fff;
}

.login-box .form-floating > label {
    color: #94a3b8;
}

.login-box .form-floating > .form-control:focus ~ label,
.login-box .form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: #3b82f6;
}

.login-box .btn-primary {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    border: none;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.login-box .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(59, 130, 246, 0.5);
}

.login-footer p {
    color: #475569;
    font-size: 0.85rem;
}

@media (max-width: 480px) {
    .login-box {
        padding: 1.5rem;
        border-radius: 20px;
    }
    .logo-icon {
        font-size: 2.5rem;
    }
}