@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=JetBrains+Mono:wght@400;700&display=swap');

:root {
    --bg-main: #0a0e17; /* Very dark tech blue/black */
    --bg-panel: #111827; /* Slightly lighter dark panel */
    --accent: #00f0ff; /* Cyber Cyan */
    --accent-glow: rgba(0, 240, 255, 0.4);
    --secondary: #3b82f6; /* Tech Blue */
    --text-main: #e2e8f0; /* Light gray for readability */
    --text-muted: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.1);
}

* { box-sizing: border-box; }
body { 
    font-family: 'Inter', system-ui, sans-serif; 
    margin: 0; 
    color: var(--text-main); 
    line-height: 1.6; 
    background-color: var(--bg-main); 
    background-image: radial-gradient(circle at center, #111827 0%, #0a0e17 100%);
}

h1, h2, h3, .logo-text, .subtitle, .tech-badge {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
}

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 2; }

/* Header & Nav */
header { 
    background: rgba(10, 14, 23, 0.85); 
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color); 
    padding: 1rem 0; 
    position: sticky; 
    top: 0; 
    z-index: 100; 
}
.nav-container { display: flex; justify-content: space-between; align-items: center; }
.logo-container { display: flex; align-items: center; gap: 10px; }
.nav-logo { height: 40px; filter: drop-shadow(0 0 5px var(--accent-glow)); }
.logo-text { font-size: 1.2rem; color: #fff; letter-spacing: 1px; }

nav ul { list-style: none; display: flex; margin: 0; padding: 0; }
nav li { margin-left: 25px; }
nav a { 
    color: var(--text-muted); 
    text-decoration: none; 
    font-size: 0.9rem; 
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s, text-shadow 0.3s; 
}
nav a:hover, nav a.active { 
    color: var(--accent); 
    text-shadow: 0 0 8px var(--accent-glow);
}

/* Hero Section */
.hero { 
    padding: 80px 0; 
    text-align: center; 
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}
.cyber-grid-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: 1;
    pointer-events: none;
}
.hero h1 { color: #fff; font-size: 2.8rem; margin-bottom: 20px; text-shadow: 0 0 15px rgba(255,255,255,0.1); }
.hero p { font-size: 1.15rem; max-width: 800px; margin: 0 auto 30px; color: var(--text-muted); }

.tech-badge {
    display: inline-block;
    padding: 5px 12px;
    font-size: 0.8rem;
    color: var(--accent);
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--accent);
    border-radius: 4px;
    margin-bottom: 20px;
    letter-spacing: 1px;
}

/* Buttons */
.btn { 
    padding: 12px 24px; 
    border-radius: 4px; 
    text-decoration: none; 
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    display: inline-block; 
    transition: all 0.3s ease; 
    text-transform: uppercase;
}
.btn-primary { 
    background: rgba(0, 240, 255, 0.1); 
    color: var(--accent); 
    border: 1px solid var(--accent); 
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
}
.btn-primary:hover { 
    background: var(--accent); 
    color: #000; 
    box-shadow: 0 0 20px var(--accent-glow); 
}
.btn-secondary { 
    background: transparent; 
    color: var(--text-main); 
    border: 1px solid var(--border-color); 
    margin-left: 15px; 
}
.btn-secondary:hover { 
    border-color: var(--text-main);
    background: rgba(255,255,255,0.05);
}

/* Typography & Content Layout */
.page-padding { padding: 60px 0; }
h1 { color: #fff; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; margin-bottom: 30px; }
h2 { color: var(--accent); font-size: 1.4rem; }
.intro-text { color: var(--text-muted); font-size: 1.1rem; border-left: 2px solid var(--secondary); padding-left: 15px; }

/* Cyber Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 25px; margin-top: 40px; }
.cyber-card { 
    background: var(--bg-panel); 
    border: 1px solid var(--border-color); 
    padding: 30px; 
    border-radius: 6px; 
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s; 
    position: relative;
    overflow: hidden;
}
.cyber-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px;
    height: 100%;
    background: var(--secondary);
    transition: background 0.3s;
}
.cyber-card:hover { 
    border-color: var(--secondary); 
    transform: translateY(-3px); 
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
}
.cyber-card:hover::before {
    background: var(--accent);
}
.cyber-card h3 { color: #fff; margin-top: 0; }

/* Research Blocks */
.cyber-block {
    margin-bottom: 40px;
    padding: 25px;
    background: rgba(17, 24, 39, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    border-left: 3px solid var(--accent);
}

/* Publications */
.pub-list { display: flex; flex-direction: column; gap: 15px; margin-top: 20px; }
.pub-item { display: flex; justify-content: space-between; align-items: center; padding: 20px; }
.pub-content { flex: 1; padding-right: 20px; }
.pub-content p { margin: 0; }
.pub-icon { 
    color: var(--accent); 
    display: flex; align-items: center; justify-content: center; 
    padding: 10px; border-radius: 4px; 
    border: 1px solid rgba(0, 240, 255, 0.2);
    background: rgba(0, 240, 255, 0.05); 
    transition: all 0.3s; 
}
.pub-icon:hover { 
    background: var(--accent); 
    color: #000;
    box-shadow: 0 0 15px var(--accent-glow);
}
.section-divider { margin-top: 50px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
.cyber-link { color: var(--secondary); text-decoration: none; }
.cyber-link:hover { color: var(--accent); text-decoration: underline; }

/* People Styling */
.people-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; margin-top: 20px; }
.person-card { padding: 25px; text-align: center; }
.subtitle { color: var(--accent); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 15px; }
.cyber-hr { border: 0; border-bottom: 1px dashed var(--border-color); margin: 40px 0; }

footer { 
    background: #05070a; 
    color: var(--text-muted); 
    padding: 30px 0; 
    text-align: center; 
    font-size: 0.85rem; 
    margin-top: 50px; 
    border-top: 1px solid var(--border-color);
    font-family: 'JetBrains Mono', monospace;
}