:root {
    --bg-dark: #0a0a0c;
    --card-bg: rgba(20, 20, 25, 0.6); /* Less transparent for better readability */
    --card-border: rgba(255, 255, 255, 0.1);
    --card-hover: rgba(255, 255, 255, 0.08);
    --text-main: #ffffff;
    --text-muted: #a0a0b0; /* Lighter for better contrast */
    --accent-glow: #7c3aed;
    --accent-cyan: #22d3ee;
    
    --font-main: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column; /* Better for sticky footer layout if needed */
    overflow-x: hidden;
}

/* Dynamic Background */
.background-grid {
    position: fixed; top: 0; left: 0; width: 200%; height: 200%;
    background-image: 
        linear-gradient(var(--card-border) 1px, transparent 1px),
        linear-gradient(90deg, var(--card-border) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.05;
    z-index: -2;
    transform: perspective(500px) rotateX(60deg) translateY(-100px) translateZ(-200px);
    animation: gridMove 30s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0% { transform: perspective(500px) rotateX(60deg) translateY(0) translateZ(-200px); }
    100% { transform: perspective(500px) rotateX(60deg) translateY(50px) translateZ(-200px); }
}

.spotlight {
    position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%);
    width: 80vw; height: 80vh;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.1) 0%, transparent 60%);
    z-index: -1;
    pointer-events: none;
}

/* Responsive Container */
.container {
    width: 100%;
    max-width: 1200px; /* Widened from 680px */
    margin: 8rem auto 4rem; /* Top margin accounts for fixed nav */
    padding: 0 2rem;
    z-index: 1;
}

/* Typography */
h1, h2, h3 { font-weight: 800; letter-spacing: -0.02em; color: white; }
p { line-height: 1.6; color: var(--text-muted); }

.glitch-text {
    background: linear-gradient(to right, #fff, #b4b4b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

/* Nav */
.glass-nav {
    position: fixed; top: 1.5rem; left: 50%; transform: translateX(-50%);
    width: 90%; max-width: 1200px;
    background: rgba(10, 10, 12, 0.8);
    backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    padding: 1rem 2rem;
    border-radius: 100px;
    display: flex; justify-content: space-between; align-items: center;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-logo { font-weight: 800; color: white; text-decoration: none; font-size: 1.1rem; }
.nav-links { display: flex; gap: 2rem; }
.nav-link { color: var(--text-muted); text-decoration: none; font-weight: 500; transition: color 0.2s, text-shadow 0.2s; }
.nav-link:hover, .nav-link.active { color: white; text-shadow: 0 0 10px rgba(255,255,255,0.3); }

/* Header/Hero */
.profile-header { text-align: center; margin-bottom: 4rem; animation: fadeInDown 0.8s ease-out; }
.hero h1 { font-size: 3.5rem; line-height: 1.1; margin-bottom: 1.5rem; }
.hero p { font-size: 1.25rem; max-width: 700px; margin: 0 auto 2rem; }

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2.5rem;
    border-radius: 24px;
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    backdrop-filter: blur(5px);
}

.feature-card:hover {
    border-color: var(--accent-cyan);
    transform: translateY(-5px);
    box-shadow: 0 10px 40px -10px rgba(34, 211, 238, 0.15);
}

.feature-icon {
    width: 50px; height: 50px;
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent-glow);
}

.feature-link {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-weight: 600; color: var(--accent-cyan);
    text-decoration: none;
    transition: gap 0.2s;
}
.feature-link:hover { gap: 0.8rem; }

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); /* Wider cards */
    gap: 2rem;
}

.post-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 2rem;
    text-decoration: none;
    transition: all 0.3s ease;
    display: block;
    position: relative;
    overflow: hidden;
}

.post-card:hover {
    border-color: var(--accent-glow);
    background: linear-gradient(145deg, rgba(255,255,255,0.05), transparent);
}

.post-date { 
    font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent-cyan); 
    margin-bottom: 0.75rem; display: block;
}
.post-title { font-size: 1.5rem; margin-bottom: 1rem; color: white; }
.post-excerpt { color: var(--text-muted); font-size: 1rem; }

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2.5rem; }
    .nav-links { display: none; } /* Hide nav links on mobile for MVP, or stacking them */
    .container { padding: 0 1.5rem; }
    .glass-nav { padding: 1rem; justify-content: center; } /* Simplify mobile nav */
    .blog-grid { grid-template-columns: 1fr; }
}

/* Animations */
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }