:root {
    --primary: #2b2d42;
    --secondary: #8d99ae;
    --accent: #ef233c;
    --accent-light: #d90429;
    --bg-dark: #121212;
    --bg-medium: #1e1e1e;
    --bg-light: #262626;
    --card-bg: rgba(255, 255, 255, 0.07);
    --card-border: rgba(255, 255, 255, 0.12);
    --text-primary: #f5f5f5;
    --text-secondary: #c0c0c0;
    --radius: 10px;
    --transition: 0.3s;
    --font-main: 'Poppins', sans-serif;
    --font-accent: 'Orbitron', sans-serif;
}
.light-theme {
    --bg-dark: #ffffff;
    --bg-medium: #f0f0f0;
    --bg-light: #e0e0e0;
    --text-primary: #121212;
    --text-secondary: #333333;
    --card-bg: rgba(0, 0, 0, 0.07);
    --card-border: rgba(0, 0, 0, 0.12);
}
.light-theme header {
    background: rgba(255,255,255,0.95);
}
.light-theme a {
    color: var(--primary);
}
.light-theme .btn.primary {
    background: var(--accent);
    color: #fff;
}
.light-theme .card {
    background: #f5f5f5;
    border: 1px solid #ddd;
}
.light-theme footer {
    background: #e0e0e0;
    color: #333;
}

/* Reset & base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    font-size: 16px;
}
body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}
h1 {
    font-size: 3rem;
    font-family: var(--font-accent);
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
h2, .section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    font-family: var(--font-accent);
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
p {
    margin-bottom: 1rem;
}

/* Links & Buttons */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover {
    color: var(--accent-light);
}
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    min-width: 150px;
    transition: transform var(--transition), box-shadow var(--transition);
}
.btn.primary {
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.btn.primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.btn.secondary {
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}
.btn.secondary:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-3px);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(18,18,18,0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo:hover {
    transform: scale(1.05);
}
.menu-toggle {
    display: none;
    font-size: 1.6rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}
.theme-toggle {
    font-size: 1.6rem;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    margin-left: 0.5rem;
}
.nav-menu {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
    padding: 0;
    margin: 0;
    list-style-type: none;
    /* remove bullet points */
}
.nav-menu li {
    list-style: none;
    list-style-type: none;
}
.nav-menu li {
    list-style: none;
}
.nav-menu a {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    position: relative;
    transition: color var(--transition);
}
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    transition: width var(--transition);
}
.nav-menu a:hover {
    color: var(--accent);
}
.nav-menu a:hover::after {
    width: 100%;
}
.nav-menu a.active {
    color: var(--accent);
}
.nav-menu a.active::after {
    width: 100%;
}

/* Push toggle button to right end of nav */
.nav-menu li:last-child {
    margin-left: auto;
}

/* Mobile navigation */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--bg-medium);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition) ease;
    }
    .nav-menu.active {
        max-height: 500px;
        padding: 1rem 0;
    }
    .nav-menu a {
        width: 100%;
        text-align: center;
        padding: 1rem 0;
    }
}

/* Hero Section */
.hero-content {
    position: relative;
    z-index: 1;
}
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('https://cdn.neoneko.xyz/yusarina/background.jpg');
    background-size: cover;
    background-position: center;
    filter: brightness(0.4);
    z-index: -2;
}
.hero-content {
    position: relative;
    max-width: 800px;
    text-align: center;
    background: rgba(18,18,18,0.6);
    backdrop-filter: blur(8px);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}
.avatar {
    width: 180px;
    height: 180px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--accent);
    box-shadow: 0 0 0 4px var(--bg-dark);
}
.avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transform: scale(1.2);
    transform-origin: top center;
}
.tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}
.subtitle {
    font-size: 1.1rem;
    color: var(--accent);
    margin-bottom: 2rem;
}

/* Social Links */
.social {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}
.social a {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    color: var(--text-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition), background var(--transition);
}
.social a:hover {
    transform: translateY(-4px);
    background: var(--accent);
    color: #fff;
}

/* Sections */
.section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Worlds page specific styling */
.section[style*="min-height: 70vh"] {
    padding-top: 180px; /* Add proper spacing from fixed header */
    padding-bottom: 80px; /* Add spacing before footer */
}

/* Privacy pages container */
.privacy-section {
    padding: 6rem 2rem;
    max-width: 1300px;
    margin: 0 auto;
}
.section:nth-child(even) {
    background: var(--bg-medium);
}

/* Streaming */
.stream-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}
.twitch-embed {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    border: 1px solid var(--card-border);
}
.stream-info {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
}

/* Projects */
.project-grid {
    display: grid;
    /* Keep three columns on larger screens to maintain row layout */
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Responsive adjustments: fall back to auto-fit on smaller screens */
@media (max-width: 1024px) {
    .project-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 2rem;
    border: 1px solid var(--card-border);
    text-align: center;
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Reduce vertical spacing between title/description and icon */
.card h3,
.card p {
    margin-bottom: 0.2rem; /* tighter spacing for boxed content */
}
.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
    background: var(--card-hover);
}
.card-icon {
    font-size: 2.5rem;
    margin-bottom: 0.2rem; /* reduced spacing between icon and text */
    color: var(--accent);
    animation: pulse 3s ease-in-out infinite;
}

/* About */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}
.privacy-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 2rem;
    background: rgba(18, 18, 18, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}
.about-photo img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.about-text {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--card-border);
}

/* Setup */
.setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}
.list {
    list-style: none;
    text-align: left;
    padding-left: 0;
}
.list li {
    margin-bottom: 0.6rem;
}

/* Footer */
footer {
    background: var(--bg-medium);
    color: var(--text-secondary);
    padding: 4rem 2rem 2rem;
}
.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 2rem;
    text-align: center;
}
.footer-brand {
    font-family: var(--font-accent);
    font-size: 2rem;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}
.footer-nav a {
    display: block;
    margin: 0.3rem 0;
    color: var(--text-secondary);
}
.footer-nav a:hover {
    color: var(--accent);
}
.footer-social a {
    margin: 0 0.5rem;
    font-size: 1.5rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}
.footer-social a:hover {
    color: var(--accent);
}
footer p {
    margin-top: 2rem;
    font-size: 0.9rem;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transform: translateY(100px);
    transition: opacity var(--transition), transform var(--transition);
    z-index: 99;
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}
.back-to-top:hover {
    transform: translateY(-5px);
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* Responsive */
@media (max-width: 1024px) {
    .stream-wrapper {
        grid-template-columns: 1fr;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .section-title { font-size: 2rem; }
    .hero-content { padding: 1.5rem; }
    .avatar { width: 150px; height: 150px; }
}
@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    .section-title { font-size: 1.8rem; }
    .hero-content { padding: 1rem; }
    .avatar { width: 120px; height: 120px; }
    .cta .btn { width: 100%; margin-bottom: 0.5rem; }
}