/* MVP.css v1.17 - https://github.com/andybrewer/mvp */

:root {
    --active-brightness: 0.85;
    --border-radius: 5px;
    --box-shadow: 2px 2px 10px;
    --color-accent: #118bee15;
    --color-bg: #fff;
    --color-bg-secondary: #e9e9e9;
    --color-link: #0000ff;
    --color-secondary: #920de9;
    --color-secondary-accent: #920de90b;
    --color-shadow: #f4f4f4;
    --color-table: #999999;
    --color-text: #000;
    --color-text-secondary: #999;
    --color-scrollbar: #cacae8;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --hover-brightness: 1.2;
    --justify-important: center;
    --justify-normal: left;
    --line-height: 1.5;
    --width-card: 285px;
    --width-card-medium: 460px;
    --width-card-wide: 800px;
    --width-content: 960px;
}

@media (prefers-color-scheme: dark) {
    :root[color-mode="user"] {
        --color-accent: #0097fc4f;
        --color-bg: #333;
        --color-bg-secondary: #555;
        --color-link: #0097fc;
        --color-secondary: #e20de9;
        --color-secondary-accent: #e20de94f;
        --color-shadow: #bbbbbb20;
        --color-table: #0097fc;
        --color-text: #f7f7f7;
        --color-text-secondary: #aaa;
    }
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

/* Layout */
article aside {
    background: var(--color-secondary-accent);
    border-left: 4px solid var(--color-secondary);
    padding: 0.01rem 0.8rem;
}

body {
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-family);
    line-height: var(--line-height);
    margin: 30;
    overflow-x: hidden;
    padding: 0;
}

footer,
header,
main {
    margin: 0 auto;
    max-width: var(--width-content);
    padding: 0rem 1rem;
}

hr {
    background-color: var(--color-bg-secondary);
    border: none;
    height: 1px;
    margin: 4rem 0;
    width: 100%;
}

section {
    justify-content: var(--justify-important);
}

section img,
article img {
    max-height: 500px;
    height: auto;
    display: block;
    margin: 0 auto;
}

section pre {
    overflow: auto;
}

section aside {
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow) var(--color-shadow);
    margin: 1rem;
    padding: 1.25rem;
    width: var(--width-card);
}

section aside:hover {
    box-shadow: var(--box-shadow) var(--color-bg-secondary);
}

[hidden] {
    display: none;
}

/* Headers */
article header,
div header,
main header {
    padding-top: 0;
}

header {
    text-align: var(--justify-important);
}

header a b,
header a em,
header a i,
header a strong {
    margin-left: 0.5rem;
    margin-right: 0.5rem;
}

header nav img {
    margin: 1rem 0;
}

section header {
    padding-top: 0;
    width: 100%;
}

/* Nav */
nav {
    align-items: center;
    display: flex;
    font-weight: bold;
    justify-content: space-between;
    margin-bottom: 7rem;
}

nav ul {
    list-style: none;
    padding: 0;
}

nav ul li {
    display: inline-block;
    margin: 0 0.5rem;
    position: relative;
    text-align: left;
}

/* Nav Dropdown */
nav ul li:hover ul {
    display: block;
}

nav ul li ul {
    background: var(--color-bg);
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow) var(--color-shadow);
    display: none;
    height: auto;
    left: -2px;
    padding: 0.5rem 1rem;
    position: absolute;
    top: 1.7rem;
    white-space: nowrap;
    width: auto;
    z-index: 1;
}

nav ul li ul::before {
    /* fill gap above to make mousing over them easier */
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -0.5rem;
    height: 0.5rem;
}

nav ul li ul li,
nav ul li ul li a {
    display: block;
}

/* Nav for Mobile */
@media (max-width: 768px) {
    nav {
        flex-wrap: wrap;
    }

    nav ul li {
        width: calc(100% - 1em);
    }

    nav ul li ul {
        border: none;
        box-shadow: none;
        display: block;
        position: static;
    }
}

/* Typography */
code,
samp {
    background-color: var(--color-accent);
    border-radius: var(--border-radius);
    color: var(--color-text);
    display: inline-block;
    margin: 0 0.1rem;
    padding: 0 0.5rem;
}

details {
    margin: 1.3rem 0;
}

details summary {
    font-weight: bold;
    cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: var(--line-height);
    text-wrap: balance;
}

mark {
    padding: 0.1rem;
}

ol li,
ul li {
    padding: 0.2rem 0;
}

p {
    margin: 0.75rem 0;
    padding: 0;
    width: 100%;
}

pre {
    margin: 1rem 0;
    max-width: var(--width-card-wide);
    padding: 1rem 0;
}

pre code,
pre samp {
    display: block;
    max-width: var(--width-card-wide);
    padding: 0.5rem 2rem;
    white-space: pre-wrap;
}

small {
    color: var(--color-text-secondary);
}

sup {
    background-color: var(--color-secondary);
    border-radius: var(--border-radius);
    color: var(--color-bg);
    font-size: xx-small;
    font-weight: bold;
    margin: 0.2rem;
    padding: 0.2rem 0.3rem;
    position: relative;
    top: -2px;
}

/* Links */
a {
    color: var(--color-link);
    display: inline-block;
    font-weight: bold;
    text-decoration: underline;
}

a:hover {
    filter: brightness(var(--hover-brightness));
}

a:active {
    filter: brightness(var(--active-brightness));
}

a b,
a em,
a i,
a strong,
button,
input[type="submit"] {
    border-radius: var(--border-radius);
    display: inline-block;
    font-size: medium;
    font-weight: bold;
    line-height: var(--line-height);
    margin: 0.5rem 0;
    padding: 1rem 2rem;
}

button,
input[type="submit"] {
    font-family: var(--font-family);
}

button:hover,
input[type="submit"]:hover {
    cursor: pointer;
    filter: brightness(var(--hover-brightness));
}

button:active,
input[type="submit"]:active {
    filter: brightness(var(--active-brightness));
}

a b,
a strong,
button,
input[type="submit"] {
    background-color: var(--color-link);
    border: 2px solid var(--color-link);
    color: var(--color-bg);
}

a em,
a i {
    border: 2px solid var(--color-link);
    border-radius: var(--border-radius);
    color: var(--color-link);
    display: inline-block;
    padding: 1rem 2rem;
}

article aside a {
    color: var(--color-secondary);
}

/* Images */
figure {
    margin: 0;
    padding: 0;
}

figure img {
    max-height: 500px;
    height: auto;
    display: block;
    margin: 0 auto;
}

figure figcaption {
    color: var(--color-text-secondary);
}

/* Forms */
button:disabled,
input:disabled {
    background: var(--color-bg-secondary);
    border-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    cursor: not-allowed;
}

button[disabled]:hover,
input[type="submit"][disabled]:hover {
    filter: none;
}

form {
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow) var(--color-shadow);
    display: block;
    max-width: var(--width-card-wide);
    min-width: var(--width-card);
    padding: 1.5rem;
    text-align: var(--justify-normal);
}

form header {
    margin: 1.5rem 0;
    padding: 1.5rem 0;
}

input,
label,
select,
textarea {
    display: block;
    font-size: inherit;
    max-width: var(--width-card-wide);
}

input[type="checkbox"],
input[type="radio"] {
    display: inline-block;
}

input[type="checkbox"] + label,
input[type="radio"] + label {
    display: inline-block;
    font-weight: normal;
    position: relative;
    top: 1px;
}

input[type="range"] {
    padding: 0.4rem 0;
}

input,
select,
textarea {
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    padding: 0.4rem 0.8rem;
}

input[type="text"],
input[type="password"],
textarea {
    width: calc(100% - 1.6rem);
}

input[readonly],
textarea[readonly] {
    background-color: var(--color-bg-secondary);
}

label {
    font-weight: bold;
    margin-bottom: 0.2rem;
}

/* Popups */
dialog {
    max-width: 90%;
    max-height: 85dvh;
    margin: auto;
    padding: 0;
    border: 1px solid var(--color-bg-secondary);
    border-radius: 0.5rem;
    overscroll-behavior: contain;
    scroll-behavior: smooth;
    scrollbar-width: none; /* Hide scrollbar for Firefox */
    -ms-overflow-style: none; /* Hide scrollbar for IE and Edge */
    scrollbar-color: transparent transparent;
    animation: bottom-to-top 0.25s ease-in-out forwards;
}

dialog::-webkit-scrollbar {
    width: 0;
    display: none;
}

dialog::-webkit-scrollbar-track {
    background: transparent;
}

dialog::-webkit-scrollbar-thumb {
    background-color: transparent;
}

@media (min-width: 650px) {
    dialog {
        max-width: 39rem;
    }
}

dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.5);
}

@keyframes bottom-to-top {
    0% {
        opacity: 0;
        transform: translateY(10%);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Tables */
table {
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    border-spacing: 0;
    display: inline-block;
    max-width: 100%;
    overflow-x: auto;
    padding: 0;
    white-space: nowrap;
}

table td,
table th,
table tr {
    padding: 0.4rem 0.8rem;
    text-align: var(--justify-important);
}

table thead {
    background-color: var(--color-table);
    border-collapse: collapse;
    border-radius: var(--border-radius);
    color: var(--color-bg);
    margin: 0;
    padding: 0;
}

table thead tr:first-child th:first-child {
    border-top-left-radius: var(--border-radius);
}

table thead tr:first-child th:last-child {
    border-top-right-radius: var(--border-radius);
}

table thead th:first-child,
table tr td:first-child {
    text-align: var(--justify-normal);
}

table tr:nth-child(even) {
    background-color: var(--color-accent);
}

/* Quotes */
blockquote {
    display: block;
    font-size: x-large;
    line-height: var(--line-height);
    margin: 1rem auto;
    max-width: var(--width-card-medium);
    padding: 1.5rem 1rem;
    text-align: var(--justify-important);
}

blockquote footer {
    color: var(--color-text-secondary);
    display: block;
    font-size: small;
    line-height: var(--line-height);
    padding: 1.5rem 0;
}

/* Scrollbars */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--color-scrollbar) transparent;
}

*::-webkit-scrollbar {
    width: 5px;
    height: 5px;
}

*::-webkit-scrollbar-track {
    background: transparent;
}

*::-webkit-scrollbar-thumb {
    background-color: var(--color-scrollbar);
    border-radius: 10px;
}

/* Papers Grid - 5 columns fixed */
.papers-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    margin: 2rem auto;
    padding: 0;
    width: 100%;
    justify-items: stretch;
}

.post-card {
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform 0.2s ease;
    background: var(--color-bg);
}

.post-card:hover {
    transform: translateY(-4px);
}

.post-card a {
    text-decoration: none;
    color: inherit;
    display: block;
    font-weight: normal;
}

.post-image {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-bottom: 1px solid var(--color-bg-secondary);
}

.post-image-placeholder {
    width: 100%;
    height: 150px;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
}

.post-image-placeholder::after {
    content: "📄";
    font-size: 3rem;
    opacity: 0.5;
}

.post-card .post-title {
    padding: 0.75rem;
    margin: 0;
    font-size: 1rem;
    line-height: 1.4;
    color: var(--color-text);
}

/* Grid Sections */
.grid-section {
    margin: 3rem 0;
    width: 100%;
    display: block;
}

/* Category Pages */
.category-posts {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0;
    list-style: none;
}

/* Posts Section */
.posts-section {
    margin: 4rem 0;
    width: 100%;
}

.posts-list {
    max-width: 800px;
    margin: 0 auto;
    padding: 0;
    list-style: none;
}

.post-item {
    padding: 1.2rem 0;
    border-bottom: 1px solid var(--color-bg-secondary);
}

.post-item:last-child {
    border-bottom: none;
}

.post-header {
    display: block;
    margin-bottom: 0.5rem;
}

.post-title-link {
    font-size: 1.1rem;
    text-decoration: none;
    color: var(--color-link);
    font-weight: bold;
    display: block;
    margin-bottom: 0.25rem;
}

.post-title-link:hover {
    text-decoration: underline;
}

.post-date {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: normal;
    display: block;
    margin-bottom: 0.5rem;
}

.post-summary {
    margin: 0;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.4;
}

/* Canvas Visualization Styles */
.canvas-title {
    margin-bottom: 2rem;
    text-align: center;
    font-size: 2.5rem;
    color: var(--color-text);
}

#canvas-container {
    position: relative;
    width: 100%;
    min-height: 600px;
    border: 1px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    background: var(--color-bg);
    overflow: hidden;
    margin-bottom: 2rem;
}

#canvas-visualization {
    width: 100%;
    height: 100%;
    min-height: 600px;
}

#canvas-controls {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 10px;
    z-index: 1000;
}

.canvas-btn {
    background: var(--color-link);
    color: var(--color-bg);
    border: none;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.canvas-btn:hover {
    filter: brightness(var(--hover-brightness));
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.canvas-btn:active {
    filter: brightness(var(--active-brightness));
    transform: translateY(0);
}

.node-details-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--color-bg);
    border: 2px solid var(--color-bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    z-index: 2000;
}

.node-details-panel::backdrop {
    background: rgba(0,0,0,0.5);
}

.node-details-panel h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--color-link);
    border-bottom: 2px solid var(--color-bg-secondary);
    padding-bottom: 0.5rem;
}

.node-details-panel p,
.node-content {
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.node-details-panel .canvas-btn {
    margin-top: 1rem;
}

/* Wikilink 스타일 */
.wikilink {
    color: var(--color-link);
    text-decoration: underline;
    cursor: pointer;
    transition: color 0.2s ease;
}

.wikilink:hover {
    filter: brightness(var(--hover-brightness));
}

/* Canvas SVG 스타일 (블로그 스타일) */
#canvas-visualization svg {
    background: var(--color-bg);
}

/* 노드 스타일 (깔끔한 블로그 스타일) */
.node-group:hover .node-bg {
    stroke: var(--color-link) !important;
    stroke-width: 2 !important;
}

/* 링크 스타일 (심플) */
.link:hover {
    stroke: var(--color-link) !important;
    stroke-width: 2 !important;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .papers-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
        margin: 1rem 0;
        padding: 0 0.5rem;
    }
    
    
    /* Canvas 시각화 모바일 스타일 */
    .canvas-title {
        font-size: 2rem;
        margin-bottom: 1rem;
    }
    
    #canvas-container {
        min-height: 400px;
    }
    
    #canvas-visualization {
        min-height: 400px;
    }
    
    #canvas-controls {
        flex-direction: column;
        gap: 5px;
        top: 5px;
        right: 5px;
    }
    
    .canvas-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .node-details-panel {
        max-width: 90vw;
        padding: 1.5rem;
        top: 20%;
        transform: translate(-50%, 0);
    }
}

@media (max-width: 480px) {
    .papers-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .canvas-title {
        font-size: 1.5rem;
    }
    
    #canvas-container {
        min-height: 300px;
    }
    
    #canvas-visualization {
        min-height: 300px;
    }
}