/* QnapsiZ Website Styles - Modern Theme (Deep Space) */
:root {
    /* Deep Space Theme */
    --deep-space: #0a0f1a;
    --nebula-dark: #121826;
    --nebula-mid: #1e293b;
    --nebula-light: #334155;
    --cosmic-accent: #6366f1;    /* Indigo for primary actions */
    --quantum-accent: #8b5cf6;   /* Violet for highlights */
    --plasma-accent: #06b6d4;    /* Cyan for technical accents */
    --stardust: #e2e8f0;
    --void-gray: #94a3b8;
    --code-bg: #0f172a;
    --border-glow: #4f46e5;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--deep-space) 0%, var(--nebula-dark) 100%);
    color: var(--stardust);
    line-height: 1.6;
}

/* Mycelium Background Canvas */
.mycelium-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

a {
    color: var(--cosmic-accent);
    text-decoration: none;
}

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

/* Header/Navigation */
header {
    background: rgba(18, 24, 38, 0.85);
    backdrop-filter: blur(10px);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-glow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--cosmic-accent), var(--quantum-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

nav ul li a {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
}

nav ul li a:hover {
    background: var(--nebula-light);
    color: var(--stardust);
}

.lang-toggle {
    display: flex;
    gap: 0.5rem;
}

.lang-toggle button {
    background: var(--nebula-mid);
    color: var(--stardust);
    border: 1px solid var(--cosmic-accent);
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.lang-toggle button.active {
    background: var(--cosmic-accent);
    color: var(--deep-space);
}

/* Hero Section - Glassmorphism */
.hero {
    text-align: center;
    padding: 6rem 2rem;
    background: transparent;
    position: relative;
    overflow: visible;
    z-index: 2;
}

.hero-content {
    background: rgba(18, 24, 38, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 24px;
    padding: 3rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--cosmic-accent), var(--quantum-accent), var(--plasma-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.hero .subtitle {
    font-size: 1.4rem;
    color: var(--void-gray);
    margin-bottom: 2.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero .cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.9rem 2.2rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: linear-gradient(90deg, var(--cosmic-accent), var(--quantum-accent));
    color: white;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
    filter: brightness(1.1);
}

.btn-secondary {
    background: transparent;
    border: 2px solid var(--cosmic-accent);
    color: var(--cosmic-accent);
}

.btn-secondary:hover {
    background: var(--nebula-mid);
    color: var(--plasma-accent);
    border-color: var(--plasma-accent);
    transform: translateY(-2px);
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

section {
    margin-bottom: 5rem;
}

section h2 {
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--cosmic-accent), var(--quantum-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--nebula-light);
}

section h3 {
    font-size: 1.5rem;
    color: var(--plasma-accent);
    margin: 2rem 0 1rem;
    font-weight: 600;
}

/* Paper Content */
.paper-content {
    background: rgba(30, 41, 59, 0.5);
    padding: 2.5rem;
    border-radius: 12px;
    margin-top: 2rem;
    border: 1px solid var(--nebula-light);
    backdrop-filter: blur(5px);
}

.paper-content .abstract {
    font-style: italic;
    padding: 1.5rem;
    border-left: 4px solid var(--cosmic-accent);
    background: rgba(99, 102, 241, 0.1);
    margin-bottom: 2rem;
    border-radius: 0 8px 8px 0;
}

.paper-content .keywords {
    color: var(--void-gray);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.paper-content .contributions {
    background: rgba(123, 123, 123, 0.1);
    padding: 1.5rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.paper-content .contributions ul {
    list-style: none;
    margin-top: 1rem;
}

.paper-content .contributions li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--nebula-dark);
}

.paper-content .contributions li:last-child {
    border-bottom: none;
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.tech-item {
    background: rgba(51, 65, 85, 0.3);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--nebula-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.2);
}

.tech-item h4 {
    color: var(--quantum-accent);
    margin-bottom: 0.75rem;
    font-size: 1.1rem;
}

/* Equations */
.math-display {
    overflow-x: auto;
    padding: 1.5rem;
    background: var(--code-bg);
    border-radius: 8px;
    margin: 1.5rem 0;
    text-align: center;
    border: 1px solid var(--nebula-light);
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin: 1.5rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(51, 65, 85, 0.3);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border: 1px solid var(--nebula-dark);
}

th {
    background: linear-gradient(90deg, var(--cosmic-accent), var(--quantum-accent));
    color: white;
    font-weight: 600;
}

tr.highlight {
    background: rgba(99, 102, 241, 0.15);
}

/* Figures */
.figure {
    text-align: center;
    margin: 2.5rem 0;
}

.figure img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.figure-caption {
    color: var(--void-gray);
    font-size: 0.9rem;
    margin-top: 0.75rem;
}

/* Code Blocks */
pre {
    background: var(--code-bg);
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border: 1px solid var(--nebula-light);
}

code {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    color: var(--plasma-accent);
}

/* Related Work Grid */
.related-work {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.related-work-item {
    background: rgba(51, 65, 85, 0.3);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--nebula-light);
    transition: transform 0.3s ease;
}

.related-work-item:hover {
    transform: translateY(-3px);
}

.related-work-item h4 {
    color: var(--plasma-accent);
    margin-bottom: 0.75rem;
}

/* Papers Grid */
.papers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.paper-card {
    background: rgba(51, 65, 85, 0.3);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--nebula-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.paper-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.25);
}

.paper-card h3 {
    color: var(--quantum-accent);
    margin-bottom: 1rem;
}

.paper-info {
    margin-top: 3rem;
    padding: 2rem;
    background: rgba(51, 65, 85, 0.2);
    border-radius: 8px;
    border: 1px solid var(--nebula-light);
}

/* Footer */
footer {
    background: rgba(18, 24, 38, 0.9);
    padding: 2.5rem;
    text-align: center;
    border-top: 1px solid var(--border-glow);
    margin-top: 5rem;
}

footer a {
    color: var(--plasma-accent);
    transition: color 0.3s ease;
}

footer a:hover {
    color: var(--cosmic-accent);
}

/* Responsive */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1.1rem;
    }

    .container {
        padding: 1.5rem;
    }

    .paper-content {
        padding: 1.5rem;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styling */
::selection {
    background: var(--cosmic-accent);
    color: white;
}