* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #f9f9f9;
}

/* Navbar */
.navbar {
    background: #fff;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 10;
}

.log {
    padding: 10px 15px;
    border-radius: 9px;
    font-size: 17px;
    border: none;
    background: #deedef;
    color: #003f8d;
    margin: 7px;
    box-shadow: 0px 2px 3px 0px #1616165c;
}

.navbar .search {
    width: 60%;
}

    .navbar .search input {
        width: 100%;
        padding: 7px 12px;
        border: 1px solid #ccc;
        border-radius: 20px;
    }

.navbar .user-controls {
    display: flex;
    gap: 15px;
}

.logo {
    font-weight: bold;
    font-size: 1.6rem;
    font-family: serif;
    color: #333;
}

    .logo a {
        text-decoration: none;
        color: #333;
    }

/* Header */
.header {
    background: #fff;
    padding: 60px 110px;
    margin: 20px;
    background: #efefef;
    /*    border: 1px solid #ddd;*/
    border-radius: 5px;
}

    .header h1 {
        font-size: 2.7rem;
        margin-bottom: 15px;
        font-family: serif;
    }

    .header h4 {
        font-size: 20px;
        color: #333;
        margin-bottom: 15px;
    }

    .header p {
        font-size: 1rem;
        color: #555;
        margin-bottom: 20px;
    }

.buttons {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.btn, .view-btn {
    padding: 10px 20px;
    border-radius: 7px;
    font-size: 1rem;
    border: none;
    cursor: pointer;
}

.btn {
    background: #0047b3;
    color: #fff;
    box-shadow: 0px 2px 3px 0px #1616165c;
}

.view-btn {
    background: #f5f7fa;
    color: #0047b3;
    border: 1px solid #ddd;
}

hr {
    width: 83%;
    margin: 15px auto;
}

.filt {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

    .filt-btn {
        border: 1px solid #000;
        padding: 6px 12px;
        border-radius: 7px;
        font-size: 14px;
        cursor: pointer;
        background-color:white;
    }
.active {
    background-color: #e6f4ff;
    color: #003b9f;
    border: 1px solid #003b9f;
    box-shadow: inset 0px 0px 4px 1px #003b9f;
}



.papers {
    width: 80vw;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    gap: 60px;
}


.paper h4 {
    font-size: 16px;
    cursor: pointer;
}

.paper p {
    font-size: 14px;
    margin: 7px 0;
}

.viewPaper {
    font-size: 16px;
    color: #0101b2;
    text-decoration: none;
    margin: 12px;
}

.titleLink {
    font-size: 16px;
    color: #000;
    margin-bottom: 15px;
    text-decoration: none;
    font-weight: 700;
}

/* Footer */
.footer {
    text-align: center;
    padding: 15px;
    background: #fff;
    margin-top: 40px;
    font-size: 0.85rem;
    color: #999;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 10px;
    }

        .navbar .search {
            width: 100%;
            margin: 0;
        }

    .header {
        padding: 20px;
        margin: 10px;
    }

        .header h1 {
            font-size: 1.8rem;
        }

        .header h4 {
            font-size: 16px;
        }

        .header p {
            font-size: 0.95rem;
        }
    .log {
        padding: 6px 10px;
    }
    .buttons {
        flex-direction: column;
    }

    .btn, .view-btn {
        width: 100%;
    }

    .filt {
        gap: 5px;
    }
}