body {
    margin: 0;
    font-family: "Poppins", sans-serif;
    background: #f3f8ff;
    color: #222;
}

header {
    background: #1e90ff;
    color: #fff;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.icon-bar {
    background: #fff;
    padding: 10px;
    display: flex;
    justify-content: center;
    gap: 20px;
    border-bottom: 1px solid #ccc;
}

.icon-bar i {
    font-size: 20px;
    color: #1e90ff;
    cursor: pointer;
}

.icon-bar i:hover {
    color: #004aad;
}

.dropdown {
    display: none;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 6px;
    margin: 0 auto;
    width: 90%;
    max-width: 400px;
    padding: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.dropdown.show {
    display: block;
}

.notification {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fff8b3;
    padding: 8px;
    border-radius: 6px;
    margin-bottom: 6px;
}

.notification button {
    background: #1e90ff;
    color: white;
    border: none;
    padding: 5px 8px;
    border-radius: 5px;
    cursor: pointer;
}

.notification button:hover {
    background: #004aad;
}

.dropdown-item {
    padding: 8px;
    cursor: pointer;
    border-radius: 5px;
}

.dropdown-item:hover {
    background: #e7f0ff;
}

.dashboard-container {
    padding: 20px;
}

.papers-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.paper-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    padding: 10px;
}

.view-btn {
    background: #1e90ff;
    color: white;
    border: none;
    padding: 8px;
    border-radius: 6px;
    cursor: pointer;
}

.view-btn:hover {
    background: #004aad;
}

@media (max-width:600px){
  .icon-bar{gap:15px;}
  .dropdown{width:95%;}
}

/* Dark mode toggle */
body.dark {
    background: #1a1a1a;
    color: #f0f0f0;
}

body.dark header {
    background: #0c3d91;
}

body.dark .icon-bar {
    background: #333;
}

body.dark .icon-bar i {
    color: #f0f0f0;
}

body.dark .dropdown {
    background: #333;
    color: #f0f0f0;
    border-color: #444;
}

body.dark .notification {
    background: #555500;
    color: #fff;
}

body.dark .view-btn {
    background: #004aad;
}

body.dark .view-btn:hover {
    background: #1e90ff;
}