/* SPFSplat Project Page Styles — adapted from InfiniSplat */

* {
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Jost', 'Lato', sans-serif;
    background: #fafafa;
    color: #333;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

strong { font-weight: 600; }
b { font-weight: 700; }

/* Navigation */
.site-nav {
    position: fixed;
    top: 50%;
    right: 18px;
    transform: translateY(-50%);
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(52, 85, 120, 0.1);
    border-radius: 16px;
    backdrop-filter: blur(12px);
    box-shadow:
        0 4px 16px rgba(52, 85, 120, 0.08),
        0 12px 32px rgba(52, 85, 120, 0.06);
}

.site-nav-inner {
    width: 132px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.site-nav-brand {
    color: #2c3e50;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
}

.site-nav-brand:hover {
    color: #5a8ab8;
    text-decoration: none;
}

.site-nav-links {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    width: 100%;
}

.site-nav-links a {
    color: #526273;
    border-radius: 999px;
    padding: 7px 10px;
    font-size: 0.88rem;
    font-weight: 500;
    line-height: 1;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    width: 100%;
    transition: color 0.2s ease, background 0.2s ease;
}

.site-nav-links a:hover,
.site-nav-links a.active {
    color: #2c3e50;
    background: rgba(90, 138, 184, 0.1);
    text-decoration: none;
}

/* Jumbotron */
.jumbotron {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 3rem 1rem;
    margin-bottom: 0;
    margin-top: 0 !important;
    border-radius: 0;
    position: relative;
    overflow: hidden;
}

.jumbotron::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(107, 154, 196, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.jumbotron::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(123, 165, 145, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.jumbotron h1 {
    font-weight: 700;
    font-size: 2.15rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    line-height: 1.3;
    position: relative;
    z-index: 1;
}

.jumbotron h4 {
    color: #5a6268;
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.jumbotron hr {
    margin: 1.5rem auto;
    width: 100%;
    max-width: 1000px;
    position: relative;
    z-index: 1;
    background: linear-gradient(90deg, transparent 0%, rgba(107, 154, 196, 0.3) 50%, transparent 100%);
    height: 2px;
    border: none;
}

.jumbotron a,
.jumbotron .author-name {
    color: #495057;
    text-decoration: none;
    transition: all 0.3s ease;
    margin: 0 8px;
    display: inline-block;
    position: relative;
    z-index: 1;
}

.jumbotron a:hover {
    color: #6b9ac4;
    text-decoration: none;
    transform: translateY(-1px);
}

.jumbotron p {
    color: #6c757d;
    font-size: 1.1rem;
    margin-top: 1rem;
    position: relative;
    z-index: 1;
}

.author-list {
    font-size: 1.4rem;
    line-height: 1.8;
    margin-bottom: 0.5rem;
}

.author-row {
    display: block;
    margin-bottom: 0.3rem;
}

.author-note {
    margin-top: 0.15rem;
    margin-bottom: 0;
    font-size: 0.95rem;
    color: #6c757d;
}

.venue-badge {
    display: inline-block;
    margin-top: 0.35rem;
    padding: 4px 14px;
    border-radius: 999px;
    background: rgba(90, 138, 184, 0.12);
    color: #3d6a94;
    font-weight: 600;
    font-size: 0.95rem;
}

/* Buttons */
.btn-large {
    padding: 13px 36px;
    font-size: 1.02rem;
    font-weight: 500;
    border-radius: 32px;
    border: 2px solid rgba(52, 85, 120, 0.12);
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: #495057 !important;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 2px 8px rgba(52, 85, 120, 0.08),
        0 4px 16px rgba(52, 85, 120, 0.04);
    margin: 0 10px;
    text-decoration: none !important;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-large::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #5a8ab8 0%, #345 100%);
    transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
}

.btn-large:hover {
    color: white !important;
    border-color: #5a8ab8;
    transform: translateY(-2px);
    box-shadow:
        0 4px 12px rgba(90, 138, 184, 0.25),
        0 8px 24px rgba(90, 138, 184, 0.15);
}

.btn-large:hover::before {
    left: 0;
}

.btn-large i { margin-right: 8px; }

/* Sections */
section {
    padding: 1.25rem 0;
    border-bottom: none;
    scroll-margin-top: 66px;
}

section:first-of-type {
    padding-top: 0;
}

.section-card {
    background: white;
    border: 1px solid rgba(52, 85, 120, 0.08);
    border-radius: 16px;
    padding: 2.2rem 2.4rem;
    box-shadow:
        0 1px 3px rgba(52, 85, 120, 0.04),
        0 4px 12px rgba(52, 85, 120, 0.06),
        0 8px 24px rgba(52, 85, 120, 0.02);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.section-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(97, 182, 242, 0.4) 50%, transparent 100%);
    opacity: 0;
    transition: opacity 0.35s ease;
}

.section-card:hover {
    box-shadow:
        0 2px 6px rgba(52, 85, 120, 0.06),
        0 8px 20px rgba(52, 85, 120, 0.08),
        0 16px 40px rgba(52, 85, 120, 0.04);
    transform: translateY(-3px);
    border-color: rgba(97, 182, 242, 0.15);
}

.section-card:hover::before {
    opacity: 1;
}

.section-title {
    font-weight: 600;
    color: #345;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    letter-spacing: -0.01em;
    position: relative;
    padding-bottom: 0.45rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #5a8ab8, #61b6f2);
    border-radius: 2px;
}

.section-card p,
.section-body {
    font-size: 1.06rem;
    line-height: 1.85;
    color: #495057;
    margin-bottom: 1.2rem;
}

.section-card ul {
    margin-left: 18px;
    margin-bottom: 0;
    line-height: 1.8;
    font-size: 1.01rem;
    color: #3a4a5a;
}

.section-card ul li {
    margin-bottom: 0.55rem;
}

/* Stage / filter bar */
.stage-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 1.1rem;
}

.stage-btn {
    border: 1px solid rgba(52, 85, 120, 0.12);
    background: #f7f9fb;
    color: #526273;
    border-radius: 999px;
    padding: 7px 16px;
    font-size: 0.92rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.stage-btn:hover {
    background: rgba(90, 138, 184, 0.12);
    color: #2c3e50;
}

.stage-btn.active {
    background: linear-gradient(135deg, #5a8ab8 0%, #4a7aa8 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(90, 138, 184, 0.25);
}

/* Demo carousel with side arrows */
#demo .section-card {
    padding-left: 1.2rem;
    padding-right: 1.2rem;
}

.demo-carousel {
    position: relative;
}

.demo-carousel-viewport {
    width: 100%;
}

.demo-nav-btn {
    position: absolute;
    top: 49%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(52, 85, 120, 0.12);
    background: rgba(255, 255, 255, 0.92);
    color: #3d6a94;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow:
        0 2px 8px rgba(52, 85, 120, 0.08),
        0 6px 16px rgba(52, 85, 120, 0.06);
    transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    z-index: 3;
}

.demo-prev {
    left: 10px;
}

.demo-next {
    right: 10px;
}

.demo-nav-btn:hover {
    background: #fff;
    color: #2c3e50;
    box-shadow:
        0 4px 12px rgba(52, 85, 120, 0.12),
        0 8px 20px rgba(52, 85, 120, 0.08);
}

.demo-nav-btn:active {
    transform: translateY(-50%) scale(0.96);
}

.demo-nav-btn i {
    font-size: 1.1rem;
    line-height: 1;
}

@media (max-width: 768px) {
    #demo .section-card {
        padding-left: 0.85rem;
        padding-right: 0.85rem;
    }

    .demo-nav-btn {
        width: 36px;
        height: 36px;
    }

    .demo-prev {
        left: 4px;
    }

    .demo-next {
        right: 4px;
    }
}

/* Media panels */
.media-panel {
    display: none;
}

.media-panel.active {
    display: block;
}

.media-panel video,
.media-panel img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
    display: block;
}

.media-caption {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.98rem;
    color: #5a6a7a;
    line-height: 1.6;
}

/* 3D .glb reconstruction viewer (model-viewer) */
#reconstruction .section-card {
    overflow: visible;
}

.glb-carousel {
    position: relative;
}

.glb-carousel-viewport {
    width: 100%;
}

.glb-slide {
    display: none;
    gap: 1rem;
    flex-wrap: wrap;
}

.glb-slide.active {
    display: flex;
}

.glb-viewer-wrap {
    flex: 1 1 280px;
    min-width: 0;
}

.glb-viewer-wrap--single {
    flex: 1 1 100%;
    max-width: 640px;
    margin: 0 auto;
}

.glb-canvas {
    display: block;
    width: 100%;
    height: 420px;
    min-height: 420px;
    background-color: #eef1f4;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    touch-action: none;
}

.glb-canvas canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

.glb-status {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #5a6a7a;
    font-size: 0.95rem;
    pointer-events: none;
    background: #f5f5f5;
}

.glb-status.is-error,
.glb-error {
    color: #8a5a5a;
}

.glb-canvas.is-loaded .glb-status {
    display: none;
}

.glb-carousel .demo-nav-btn {
    top: 50%;
}

.glb-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 0.9rem;
}

.glb-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: background 0.2s ease;
}

.glb-dot.active {
    background: #5a8ab8;
}

@media (max-width: 768px) {
    .glb-carousel model-viewer,
    .glb-canvas {
        height: 280px;
        min-height: 280px;
    }
}

.method-figure {
    margin: 1rem 0 1.25rem;
    text-align: center;
}

.method-figure img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 12px;
}

/* Tables */
.table-panel {
    display: none;
    overflow-x: auto;
}

.table-panel.active {
    display: block;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.92rem;
    background: #fff;
    margin: 0 auto;
}

.results-table th,
.results-table td {
    padding: 8px 10px;
    text-align: center;
    border-top: 1px solid #dfe3e6;
    white-space: nowrap;
}

.results-table thead th {
    background: #e5e7eb;
    color: #111;
    font-weight: 600;
}

.results-table tbody td:first-child {
    text-align: left;
}

.results-table td.group-header {
    background: #f2f4f7 !important;
    color: #111;
    font-weight: 700;
    text-align: left;
}

.results-table td.our-method {
    color: #3d6a94;
    font-weight: 700;
}

.results-table b {
    color: #2c3e50;
}

.results-table u {
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Citation */
.citation-wrap {
    position: relative;
}

.citation-wrap pre {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: #ecf0f1;
    padding: 1.8rem;
    border-radius: 12px;
    font-size: 0.91rem;
    line-height: 1.7;
    overflow-x: auto;
    box-shadow:
        0 4px 12px rgba(52, 85, 120, 0.12),
        0 8px 24px rgba(52, 85, 120, 0.06);
    border: 1px solid rgba(236, 240, 241, 0.08);
    margin: 0;
}

.citation-wrap pre code {
    color: #ecf0f1;
    white-space: pre;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
}

.copy-citation-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.9);
    color: #2c3e50;
    border: 1px solid rgba(236, 240, 241, 0.3);
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.copy-citation-btn:hover {
    background: #fff;
    border-color: rgba(97, 182, 242, 0.5);
    transform: translateY(-2px);
}

/* Footer */
footer {
    padding: 2rem 0;
    color: #6c757d;
    font-size: 0.9rem;
    text-align: center;
}

footer a {
    color: #5a8ab8;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 1500px) {
    .site-nav {
        position: sticky;
        top: 0;
        right: auto;
        transform: none;
        border-radius: 0;
        box-shadow: none;
        border-left: 0;
        border-right: 0;
        border-top: 0;
    }

    .site-nav-inner {
        width: min(1120px, calc(100% - 32px));
        height: 52px;
        margin: 0 auto;
        padding: 0;
        flex-direction: row;
        justify-content: space-between;
        gap: 20px;
    }

    .site-nav-links {
        flex-direction: row;
        justify-content: flex-end;
        gap: 4px;
        width: auto;
        overflow-x: auto;
    }

    .site-nav-links a {
        width: auto;
        padding: 6px 10px;
    }
}

@media (max-width: 768px) {
    .jumbotron h1 {
        font-size: 1.35rem !important;
    }

    .section-card {
        padding: 1.5rem;
        border-radius: 14px;
    }

    .btn-large {
        padding: 11px 24px;
        font-size: 0.96rem;
        margin: 6px;
    }

    .author-list {
        font-size: 1.15rem;
    }
}