@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&family=Montserrat:wght@400;700&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.3/css/all.min.css');

:root {
    --bg: #f4f4f4;
    --panel: #ffffff;
    --ink: #172026;
    --muted: #5b6872;
    --line: #ddd;
    --accent: #85B737;
    --accent-strong: #6f992d;
    --accent-soft: #eef6e2;
    --sidebar: #f5f1eb;
    --shadow: 0 4px 16px rgba(23, 32, 38, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Calibri, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    display: flex;
    font-size: 16px;
    line-height: 1.6;
}

a {
    color: var(--accent);
}

#mobile-warning {
    display: none;
    position: fixed;
    inset: 16px;
    z-index: 2000;
    height: fit-content;
    margin: auto;
    padding: 24px;
    border-radius: 8px;
    background: var(--panel);
    box-shadow: var(--shadow);
    text-align: center;
}

#mobile-warning button {
    margin-top: 16px;
    border: 0;
    border-radius: 8px;
    padding: 10px 18px;
    color: #ffffff;
    background: var(--accent);
    cursor: pointer;
}

.sidebar {
    width: 300px;
    background: var(--sidebar);
    color: #333;
    padding: 20px;
    position: fixed;
    height: 100vh;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    border-right: 1px solid var(--line);
    z-index: 1000;
}

.sidebar-title {
    margin: 0 0 20px;
    color: #85B737;
    font-size: 1.8em;
    line-height: 1.15;
    font-weight: 700;
    text-align: center;
    font-family: Calibri, "Helvetica Neue", Arial, sans-serif;
}

.sidebar-logo {
    width: 1.1em;
    height: 1em;
    object-fit: contain;
    vertical-align: -0.15em;
    margin-right: 4px;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
}

.sidebar li {
    margin: 10px 0;
}

.sidebar a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 1em;
    display: flex;
    align-items: center;
    padding: 10px 15px;
    border-radius: 8px;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.sidebar a:hover {
    color: #ffffff;
    background: var(--accent);
}

.sidebar i {
    margin-right: 10px;
    width: 18px;
    text-align: center;
}

.content {
    margin-left: 320px;
    padding: 20px;
    width: calc(100% - 320px);
}

.paper-info,
.gallery-section,
.bibtex-section {
    width: min(1160px, 100%);
    margin: 0 auto 22px;
    padding: 24px;
    background: var(--panel);
    box-shadow: var(--shadow);
    border-radius: 8px;
}

.hero-panel {
    text-align: center;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    font-size: 0.86rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

.paper-info h1 {
    max-width: 900px;
    margin: 0 auto;
    color: #050807;
    font-size: clamp(1.75rem, 2.35vw, 2.45rem);
    line-height: 1.14;
    letter-spacing: 0;
}

.title-logo {
    width: 2.2em;
    height: 2.05em;
    object-fit: contain;
    vertical-align: -0.55em;
    margin-right: 8px;
}

.authors,
.affiliations,
.contribution-notes {
    max-width: 920px;
    margin: 10px auto 0;
    color: #333;
    font-size: 1.02rem;
    line-height: 1.45;
}

.authors {
    max-width: 1080px;
    display: grid;
    gap: 2px;
    font-size: 0.99rem;
}

.author-row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    gap: 0 14px;
}

.affiliations {
    margin-top: 4px;
    color: var(--muted);
    font-size: 0.95rem;
}

.contribution-notes {
    margin-top: 2px;
    font-size: 0.94rem;
}

.author-name,
.affiliations span,
.contribution-notes span {
    display: inline-block;
    margin: 0 7px 3px;
}

.author-name {
    color: var(--accent);
    margin: 0 0 3px;
}

.author-name a {
    color: var(--accent);
    text-decoration: none;
}

.author-name a:hover {
    text-decoration: underline;
}

.contribution-note {
    color: #333;
}

.authors:empty,
.affiliations:empty {
    display: none;
}

.links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
    margin: 22px 0;
}

.links p {
    margin: 0;
}

.links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 96px;
    min-height: 38px;
    padding: 8px 16px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 700;
}

.links a:hover {
    color: #ffffff;
    background: var(--accent);
}

.intro-video-wrap {
    display: block;
    width: min(920px, 100%);
    max-width: 100%;
    margin: 0 auto 22px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #101615;
}

.intro-video {
    display: block;
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    object-fit: contain;
}

.hero-video-compare {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    width: min(860px, 100%);
    margin: 18px auto 0;
}

.gallery-section h2,
.bibtex-section h2 {
    margin: 0 0 18px;
    color: #101615;
    font-size: 1.75rem;
    line-height: 1.2;
    letter-spacing: 0;
}

.columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.item,
.metric,
.demo-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
}

.item {
    padding: 18px;
    text-align: left;
}

.item h3,
.story-text h3,
.demo-card h3 {
    margin: 0 0 8px;
    color: #101615;
    font-size: 1.08rem;
    line-height: 1.25;
    letter-spacing: 0;
}

.demo-card h3.accent-heading {
    color: var(--accent);
}

.item p,
.story-text p,
.demo-card p,
.bibtex-section p {
    margin: 0;
    color: var(--muted);
}

.story-list {
    display: grid;
    gap: 26px;
}

.story {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
    gap: 20px;
    align-items: center;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--line);
}

.story:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.story-narrow .figure {
    width: min(620px, 100%);
    margin-left: auto;
    margin-right: auto;
}

.story-compact .figure {
    width: min(50%, 340px);
}

.story-text {
    text-align: left;
}

.figure {
    margin: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #ffffff;
}

.figure img {
    display: block;
    width: 100%;
    height: auto;
}

.figure figcaption {
    padding: 9px 12px;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
    text-align: center;
}

.figure.hero-figure {
    width: min(860px, 100%);
    margin: 18px auto 0;
    border: 0;
    border-radius: 0;
    background: transparent;
}

.metrics {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.metric {
    padding: 16px;
    text-align: left;
}

.metric strong {
    display: block;
    color: var(--accent);
    font-size: 1.75rem;
    line-height: 1;
    letter-spacing: 0;
    white-space: nowrap;
}

.metric span {
    display: block;
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.9rem;
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.96rem;
}

.result-table th,
.result-table td {
    padding: 11px 12px;
    text-align: left;
    border-bottom: 1px solid var(--line);
}

.result-table th {
    color: #35434c;
    font-weight: 700;
    background: #f7fafb;
}

.result-table th:not(:first-child),
.result-table td:not(:first-child) {
    text-align: right;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.demo-collection {
    display: grid;
    gap: 16px;
}

.demo-group-title {
    margin: 10px 0 0;
    color: #101615;
    font-size: 1.25rem;
    line-height: 1.2;
    letter-spacing: 0;
    text-align: left;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
}

.speed-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 0 0 16px;
}

.hero-speed-controls {
    margin-top: 18px;
}

.speed-label {
    color: var(--muted);
    font-weight: 700;
}

.speed-btn {
    min-width: 44px;
    min-height: 34px;
    border: 1px solid var(--accent);
    border-radius: 8px;
    color: var(--accent);
    background: #ffffff;
    cursor: pointer;
    font-weight: 700;
}

.speed-btn.active,
.speed-btn:hover {
    color: #ffffff;
    background: var(--accent);
}

.demo-card {
    position: relative;
    overflow: hidden;
    text-align: left;
}

.demo-card h3 {
    margin: 0;
    min-height: 48px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--line);
    font-size: 0.92rem;
    overflow-wrap: anywhere;
}

.demo-card p {
    padding: 10px 14px 14px;
    font-size: 0.9rem;
}

.gallery-video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    background: #101615;
    object-fit: cover;
}

.caption-card {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

.caption-card:focus {
    outline-color: var(--accent);
}

.caption-popover {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    z-index: 5;
    max-height: calc(100% - 20px);
    padding: 10px 12px;
    border: 1px solid rgba(133, 183, 55, 0.35);
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.22);
    color: #1f2716;
    text-align: left;
    overflow-y: auto;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px) scale(0.98);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.demo-card h3 ~ .caption-popover {
    top: 58px;
    max-height: calc(100% - 68px);
}

.caption-card:hover .caption-popover,
.caption-card:focus .caption-popover,
.caption-card:focus-within .caption-popover {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}

.caption-popover-title {
    margin-bottom: 6px;
    color: #47610f;
    font-size: 0.92rem;
    font-weight: 700;
    line-height: 1.2;
}

.caption-list {
    display: grid;
    gap: 5px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.caption-list li {
    display: grid;
    grid-template-columns: 50px minmax(0, 1fr);
    gap: 8px;
    align-items: start;
    color: #28301f;
    font-size: 0.78rem;
    line-height: 1.25;
}

.caption-shot {
    color: #6f8e32;
    font-weight: 700;
    white-space: nowrap;
}

.caption-text {
    overflow-wrap: anywhere;
}

.bibtex-box {
    min-height: 120px;
    margin: 0;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #f7fafb;
    color: #333;
    text-align: left;
    white-space: pre-wrap;
}

.bibtex-note {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 0.92rem;
    text-align: left;
}

@media screen and (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .content {
        margin-left: 0;
        width: 100%;
        padding: 16px;
    }

    .paper-info,
    .gallery-section,
    .bibtex-section {
        padding: 22px;
    }

    .columns,
    .metrics,
    .result-grid,
    .demo-grid,
    .hero-video-compare,
    .story {
        grid-template-columns: 1fr;
    }

    .story {
        gap: 14px;
    }

    .story-compact .figure {
        width: min(50%, 320px);
    }

    .hero-figure {
        width: 100%;
    }

    .author-row {
        flex-wrap: wrap;
    }
}

@media screen and (max-width: 560px) {
    .paper-info h1 {
        font-size: 2rem;
    }

    .title-logo {
        display: block;
        margin: 0 auto 8px;
    }

    .links a {
        width: 100%;
    }

    .speed-controls {
        flex-wrap: wrap;
    }
}