/* --- Base Styles & Dark Mode Palette --- */
:root {
    --bg-color: #1a1d24;
    --text-color: #e2e2e2;
    --header-bg: rgba(26, 29, 36, 0.7);
    --card-bg: #242831;
    --border-color: #333947;
    --accent-color: #fca311;
    --accent-hover: #ffc300;
    --sexy-font: 'Inter', sans-serif;
}

body {
    font-family: var(--sexy-font);
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding-top: 120px; /* Adjust for new header */
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* --- Typography & Header --- */
h1 {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(252, 163, 17, 0.2);
}

header {
    display: flex;
    justify-content: center; /* Center h1 */
    align-items: center;
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 900px;
    padding: 15px 30px;
    background-color: var(--header-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* --- Search Box --- */
/* Search styles removed */

/* --- Main Content & Paper Entries --- */
main {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 20px 100px 20px; /* Add bottom padding for footer */
}

.paper-entry {
    background-color: var(--card-bg);
    border-radius: 10px;
    margin-bottom: 35px;
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.5s forwards;
}

.paper-entry:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.no-results {
    text-align: center;
    font-size: 1.2rem;
    padding: 50px 20px;
    color: var(--accent-color);
}

@keyframes fadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.paper-header {
    display: flex;
    align-items: baseline;
    gap: 15px;
    margin-bottom: 15px;
}

.paper-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
}

.paper-title {
    font-size: 1.6rem;
    font-weight: 500;
    margin: 0;
}

.paper-meta {
    font-size: 1rem;
    color: #aab;
    display: flex;
    flex-wrap: wrap;
    gap: 10px 20px;
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
}

.paper-meta span {
    display: inline-block;
}

.paper-link {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    background-color: var(--accent-color);
    color: var(--bg-color);
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 700;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.paper-link:hover {
    background-color: var(--accent-hover);
    transform: scale(1.05);
}

/* --- Footer --- */
footer {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: auto; /* Auto width for content */
    padding: 10px 25px;
    color: #aab;
    background-color: var(--header-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    z-index: 999;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

footer p {
    margin: 0;
    font-size: 0.9rem;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    body {
        padding-top: 120px; /* Readjusted */
    }
    header {
        flex-direction: row; /* Keep as row */
        width: 95%;
        top: 10px;
        padding: 15px;
        gap: 10px;
    }
    h1 {
        font-size: 1.1rem; /* Smaller for mobile */
        text-align: center;
    }
    .paper-title {
        font-size: 1.3rem;
    }
    .paper-meta {
        font-size: 0.9rem;
    }
    .paper-entry {
        padding: 20px;
    }
}