/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #ff6b35;
    --primary-glow: rgba(255, 107, 53, 0.3);
    --secondary-color: #004e89;
    --accent-color: #f77f00;
    --bg-dark: #f5f3f0;
    --bg-darker: #ffffff;
    --bg-card: #fafafa;
    --bg-card-hover: #f0f0f0;
    --text-color: #1a1a2e;
    --text-secondary: #16213e;
    --text-muted: #4a5568;
    --border-color: #d1d5db;
    --border-accent: rgba(255, 107, 53, 0.3);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
    --shadow-colored: 0 4px 12px rgba(255, 107, 53, 0.2);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 107, 53, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 78, 137, 0.08) 0%, transparent 50%);
    background-attachment: fixed;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 2px solid var(--border-color);
    padding: 0.6rem 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-links {
    display: flex;
    gap: 1.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all 0.3s ease;
    padding: 0.35rem 0;
    position: relative;
}

.nav-links a::before {
    content: '[ ';
    color: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-links a::after {
    content: ' ]';
    color: var(--primary-color);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a:hover::before,
.nav-links a:hover::after {
    opacity: 1;
}

/* Header */
.header {
    text-align: center;
    padding: 3.5rem 0 3rem;
    background: linear-gradient(135deg, #ff6b35 0%, #f77f00 50%, #004e89 100%);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.05) 2px, rgba(255, 255, 255, 0.05) 4px);
    pointer-events: none;
}

.header .container {
    position: relative;
    z-index: 1;
}

.title {
    font-size: 3.2rem;
    font-weight: 900;
    margin-bottom: 1.25rem;
    line-height: 1.2;
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.03em;
}

.title::before {
    content: '>>> ';
    color: #ffffff;
    font-family: 'Courier New', monospace;
}

.authors {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.01em;
}

.authors::before {
    content: '// ';
    color: #ffffff;
}

/* Sections */
.section {
    padding: 3rem 0;
    position: relative;
}

.section.bg-light {
    background-color: var(--bg-darker);
}

.section h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1.75rem;
    color: var(--text-color);
    letter-spacing: -0.02em;
    position: relative;
    padding-left: 1.25rem;
    border-left: 4px solid var(--primary-color);
}

.section h2::before {
    content: '# ';
    color: var(--primary-color);
    font-family: 'Courier New', monospace;
    margin-right: 0.5rem;
}

.section h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin: 1.75rem 0 1rem 0;
    color: var(--secondary-color);
    letter-spacing: -0.01em;
    font-family: 'Courier New', monospace;
}

.section h3::before {
    content: '## ';
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.section p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

.section ul {
    margin: 1rem 0 1rem 1.5rem;
    color: var(--text-secondary);
}

.section li {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
    line-height: 1.7;
}

/* Abstract Placeholder */
.abstract-placeholder {
    margin: 1.25rem 0;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 4px;
    text-align: justify;
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    position: relative;
}

.abstract-placeholder p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* Architecture Content Layout */
.architecture-content {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    margin: 1.75rem 0;
    background: var(--bg-card);
    padding: 1.75rem;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    position: relative;
}

.architecture-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary-color), var(--secondary-color));
}

/* Architecture Figure */
.architecture-figure {
    flex: 0 0 48%;
}

.architecture-figure img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.architecture-figure img:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-colored);
    transform: translateY(-2px);
}

/* Architecture Description */
.architecture-description {
    flex: 1;
    padding: 2rem;
    background: var(--bg-darker);
    border-radius: 4px;
    display: flex;
    align-items: center;
    border: 2px dashed var(--border-color);
}

.architecture-description p {
    color: var(--text-secondary);
    font-style: normal;
    margin-bottom: 1.25rem;
    font-size: 1.05rem;
    line-height: 1.8;
}

/* Leaderboard */
.leaderboard-table {
    overflow-x: auto;
    background-color: var(--bg-card);
    border-radius: 4px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-bottom: 2px solid var(--primary-color);
}

th {
    padding: 0.85rem 1rem;
    text-align: left;
    font-weight: 700;
    font-size: 0.75rem;
    color: #ffffff;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-family: 'Courier New', monospace;
}

td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: 'Courier New', monospace;
}

tbody tr {
    transition: all 0.2s ease;
}

tbody tr:hover {
    background-color: var(--bg-card-hover);
    box-shadow: inset 4px 0 0 var(--primary-color);
}

tbody tr:last-child td {
    border-bottom: none;
}

.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 2px;
    font-weight: 700;
    font-size: 1rem;
    font-family: 'Courier New', monospace;
    border: 2px solid;
}

.rank-1 {
    background: #ffd700;
    color: #1a1a2e;
    border-color: #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.4);
}

.rank-2 {
    background: #c0c0c0;
    color: #1a1a2e;
    border-color: #a0a0a0;
    box-shadow: 0 0 15px rgba(192, 192, 192, 0.4);
}

.rank-3 {
    background: #cd7f32;
    color: #ffffff;
    border-color: #cd7f32;
    box-shadow: 0 0 15px rgba(205, 127, 50, 0.4);
}

/* Experiment Logs Section */
.logs-section {
    background: var(--bg-card);
    padding: 1.75rem;
    border-radius: 4px;
    margin: 1.25rem 0;
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--primary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
}

.logs-section::before {
    content: attr(data-index);
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--border-color);
    font-family: 'Courier New', monospace;
    font-size: 2rem;
    font-weight: 700;
}

.logs-section:hover {
    border-left-color: var(--accent-color);
    box-shadow: var(--shadow-colored);
    transform: translateX(4px);
}

.logs-section h3 {
    color: var(--primary-color);
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.logs-section p {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
}

/* Survey Section */
.survey-section {
    background: var(--bg-card);
    padding: 1.75rem;
    border-radius: 4px;
    margin: 1.25rem 0;
    border: 2px solid var(--border-color);
    border-left: 4px solid var(--secondary-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.survey-section:hover {
    border-left-color: var(--primary-color);
    box-shadow: var(--shadow-colored);
    transform: translateX(4px);
}

.survey-section h3 {
    color: var(--secondary-color);
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.survey-section p {
    color: var(--text-muted);
    font-style: italic;
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
}

/* BibTeX Section */
.bibtex-container {
    background: var(--bg-card);
    border-radius: 4px;
    border: 2px solid var(--border-color);
    padding: 1.75rem;
    margin: 1.75rem 0;
    position: relative;
    box-shadow: var(--shadow-lg);
}

#bibtex-code {
    background: var(--text-color);
    color: var(--primary-color);
    padding: 2rem;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    overflow-x: auto;
    font-family: 'Courier New', 'Monaco', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}

#bibtex-code code {
    color: #f5f3f0;
}

.copy-btn {
    margin-top: 1.5rem;
    padding: 0.875rem 2rem;
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    font-family: 'Courier New', monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.copy-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    transition: left 0.3s ease;
    z-index: -1;
}

.copy-btn:hover {
    color: #ffffff;
    box-shadow: var(--shadow-colored);
}

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

.copy-btn:active {
    transform: scale(0.98);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--text-color), var(--text-secondary));
    color: #ffffff;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: 4px solid var(--primary-color);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-color), var(--accent-color), transparent);
}

.footer p {
    margin: 0.75rem 0;
    font-size: 0.9rem;
    font-family: 'Courier New', monospace;
    color: rgba(255, 255, 255, 0.9);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .container {
        padding: 0 1.5rem;
    }

    .title {
        font-size: 2.5rem;
    }

    .section h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .title {
        font-size: 1.75rem;
        padding: 0 1rem;
    }

    .title::before {
        display: block;
        margin-bottom: 0.5rem;
    }

    .authors {
        font-size: 1rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    .section {
        padding: 3rem 0;
    }

    .section h2 {
        font-size: 1.75rem;
        padding-left: 1rem;
    }

    .section h3 {
        font-size: 1.25rem;
    }

    .architecture-content {
        flex-direction: column;
        gap: 2rem;
        padding: 1.5rem;
    }

    .architecture-figure {
        flex: 1;
    }

    th, td {
        padding: 1rem;
        font-size: 0.85rem;
    }

    .logs-section,
    .survey-section {
        padding: 1.5rem;
    }

    .bibtex-container {
        padding: 1.5rem;
    }

    #bibtex-code {
        font-size: 0.8rem;
        padding: 1.5rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

/* Selection Styling */
::selection {
    background: var(--primary-color);
    color: #ffffff;
}

::-moz-selection {
    background: var(--primary-color);
    color: #ffffff;
}