:root {
  --bg-main: #030712;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.9);
  --border-glow: rgba(0, 240, 255, 0.3);
  --border-neon: #00f0ff;
  --text-main: #e2e8f0;
  --text-muted: #94a3b8;
  --cyber-green: #00ff41;
  --cyber-cyan: #00f0ff;
  --cyber-purple: #b026ff;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-main);
  background-image: 
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 30px 30px;
  color: var(--text-main);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Cyber Glow Background */
.cyber-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  pointer-events: none;
  animation: pulseGlow 8s infinite alternate;
}
.glow-1 { top: -200px; left: -200px; background: rgba(0, 240, 255, 0.15); }
.glow-2 { bottom: -200px; right: -200px; background: rgba(176, 38, 255, 0.15); }

@keyframes pulseGlow {
  0% { transform: scale(1); opacity: 0.5; }
  100% { transform: scale(1.2); opacity: 0.8; }
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
  background: rgba(3, 7, 18, 0.8);
  border-bottom: 1px solid var(--border-glow);
  padding: 20px 0;
}
.nav-content { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; font-family: var(--font-mono); letter-spacing: -1px; }
.logo-tag { color: var(--cyber-cyan); }
.logo-sys { color: var(--text-main); }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  color: var(--text-muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; font-family: var(--font-mono);
  transition: var(--transition); text-transform: uppercase; letter-spacing: 1px;
}
.nav-links a:hover { color: var(--cyber-cyan); text-shadow: 0 0 8px var(--cyber-cyan); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px; font-family: var(--font-mono); font-weight: 600; font-size: 0.9rem;
  text-transform: uppercase; letter-spacing: 1px; cursor: pointer; text-decoration: none;
  transition: var(--transition); position: relative; overflow: hidden;
}
.btn-primary {
  background: transparent; color: var(--cyber-cyan);
  border: 1px solid var(--cyber-cyan); box-shadow: 0 0 10px rgba(0, 240, 255, 0.2) inset;
}
.btn-primary:hover {
  background: var(--cyber-cyan); color: #000; box-shadow: 0 0 20px var(--cyber-cyan);
}
.btn-primary::before {
  content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: all 0.5s;
}
.btn-primary:hover::before { left: 100%; }

/* Hero Terminal */
.hero { padding: 100px 0 80px; }
.terminal-window {
  background: #0a0a0a; border: 1px solid var(--border-glow); border-radius: 8px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.5), 0 0 0 1px rgba(0, 240, 255, 0.1);
  overflow: hidden; max-width: 900px; margin: 0 auto;
}
.terminal-header {
  background: #111; padding: 10px 16px; display: flex; align-items: center;
  border-bottom: 1px solid #333; font-family: var(--font-mono); font-size: 0.8rem; color: #666;
}
.term-dots { display: flex; gap: 6px; margin-right: 16px; }
.term-dot { width: 12px; height: 12px; border-radius: 50%; }
.dot-r { background: #ff5f56; } .dot-y { background: #ffbd2e; } .dot-g { background: #27c93f; }
.terminal-body { padding: 40px; font-family: var(--font-mono); text-align: left; }
.sys-status {
  display: inline-block; color: var(--cyber-green); background: rgba(0, 255, 65, 0.1);
  padding: 4px 12px; border-radius: 4px; font-size: 0.85rem; margin-bottom: 24px;
  border: 1px solid rgba(0, 255, 65, 0.3);
}
.typing-container { font-size: 2.2rem; font-weight: 700; color: var(--text-main); margin-bottom: 16px; line-height: 1.3; }
.typing-text { border-right: 2px solid var(--cyber-cyan); white-space: pre-wrap; animation: blinkCursor 0.75s step-end infinite; }
@keyframes blinkCursor { from, to { border-color: transparent } 50% { border-color: var(--cyber-cyan); } }
.highlight-ai { color: var(--cyber-purple); text-shadow: 0 0 10px rgba(176, 38, 255, 0.4); }
.highlight-cyber { color: var(--cyber-cyan); text-shadow: 0 0 10px rgba(0, 240, 255, 0.4); }
.hero-desc { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 40px; font-family: var(--font-display); }

/* Expertise Grid */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-size: 2.5rem; font-weight: 700; font-family: var(--font-mono); text-transform: uppercase; margin-bottom: 16px; }
.title-bracket { color: var(--cyber-cyan); opacity: 0.5; }
.expertise-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.expert-card {
  background: var(--bg-card); border: 1px solid rgba(255,255,255,0.05);
  border-top: 2px solid var(--border-neon); border-radius: 8px; padding: 32px;
  backdrop-filter: blur(10px); transition: var(--transition); position: relative; overflow: hidden;
}
.expert-card:hover {
  transform: translateY(-5px); border-color: var(--border-glow);
  box-shadow: 0 10px 30px rgba(0,0,0,0.5), 0 0 20px rgba(0, 240, 255, 0.1);
}
.expert-icon { font-size: 2.5rem; margin-bottom: 20px; display: inline-block; }
.expert-card h3 { font-size: 1.4rem; margin-bottom: 16px; font-family: var(--font-mono); color: var(--text-main); }
.expert-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 24px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tech-tag {
  background: rgba(0, 240, 255, 0.05); border: 1px solid rgba(0, 240, 255, 0.2);
  color: var(--cyber-cyan); font-family: var(--font-mono); font-size: 0.75rem;
  padding: 4px 10px; border-radius: 4px;
}
.card-ai { border-top-color: var(--cyber-purple); }
.card-ai .tech-tag { color: var(--cyber-purple); border-color: rgba(176, 38, 255, 0.3); background: rgba(176, 38, 255, 0.05); }

/* Neural Lab (Prompt Generator) */
.neural-lab { background: #070b14; border-top: 1px solid #1f2937; border-bottom: 1px solid #1f2937; padding: 80px 0; }
.lab-interface {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; background: #0a0e17;
  border: 1px solid #1f2937; border-radius: 12px; padding: 40px; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
}
@media (max-width: 850px) { .lab-interface { grid-template-columns: 1fr; } }
.lab-controls label { display: block; font-family: var(--font-mono); font-size: 0.85rem; color: var(--cyber-cyan); margin-bottom: 8px; }
.lab-input {
  width: 100%; background: #03050a; border: 1px solid #1f2937; color: #e2e8f0;
  padding: 12px 16px; border-radius: 6px; font-family: var(--font-mono); font-size: 0.9rem; margin-bottom: 24px; outline: none; transition: var(--transition);
}
.lab-input:focus { border-color: var(--cyber-cyan); box-shadow: 0 0 10px rgba(0, 240, 255, 0.2); }
.output-terminal {
  background: #03050a; border: 1px solid #1f2937; border-radius: 8px; padding: 20px;
  position: relative; display: flex; flex-direction: column; height: 100%;
}
.output-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; border-bottom: 1px solid #1f2937; padding-bottom: 12px; }
.output-title { font-family: var(--font-mono); font-size: 0.8rem; color: var(--cyber-green); }
.code-display { font-family: var(--font-mono); font-size: 0.85rem; color: #a5b4fc; white-space: pre-wrap; flex-grow: 1; overflow-y: auto; max-height: 300px; line-height: 1.5; }
.btn-copy-code { background: transparent; color: var(--text-muted); border: 1px solid #333; padding: 4px 12px; border-radius: 4px; font-family: var(--font-mono); font-size: 0.75rem; cursor: pointer; transition: var(--transition); }
.btn-copy-code:hover { border-color: var(--cyber-cyan); color: var(--cyber-cyan); }
.toast { position: absolute; bottom: 20px; right: 20px; background: var(--cyber-green); color: #000; padding: 8px 16px; font-family: var(--font-mono); font-size: 0.8rem; font-weight: bold; border-radius: 4px; opacity: 0; transition: opacity 0.3s; pointer-events: none; }
.toast.show { opacity: 1; }

/* Footer */
.footer { text-align: center; padding: 40px 0; border-top: 1px solid #111; font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); }
.footer span { color: var(--cyber-cyan); }

/* Timeline & History */
.timeline { position: relative; max-width: 800px; margin: 0 auto; border-left: 2px solid var(--border-glow); padding-left: 30px; }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before {
  content: ''; position: absolute; left: -37px; top: 0; width: 12px; height: 12px;
  background: var(--bg-main); border: 2px solid var(--cyber-cyan); border-radius: 50%;
  box-shadow: 0 0 10px var(--cyber-cyan);
}
.timeline-date { font-family: var(--font-mono); font-size: 0.85rem; color: var(--cyber-cyan); margin-bottom: 8px; display: inline-block; background: rgba(0,240,255,0.1); padding: 4px 10px; border-radius: 4px; border: 1px solid rgba(0,240,255,0.2); }
.timeline-title { font-size: 1.3rem; color: var(--text-main); margin-bottom: 4px; }
.timeline-subtitle { font-family: var(--font-mono); font-size: 0.9rem; color: var(--cyber-purple); margin-bottom: 12px; }
.timeline-desc { color: var(--text-muted); font-size: 0.95rem; }
.timeline-desc ul { list-style-type: square; padding-left: 20px; margin-top: 10px; }
.timeline-desc li { margin-bottom: 6px; }

/* Projects Grid */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.project-card {
  background: rgba(10, 14, 23, 0.8); border: 1px solid #1f2937; border-radius: 8px; padding: 24px;
  transition: var(--transition); display: flex; flex-direction: column;
}
.project-card:hover { border-color: var(--cyber-cyan); box-shadow: 0 10px 30px rgba(0,240,255,0.1); transform: translateY(-3px); }
.project-title { font-family: var(--font-mono); font-size: 1.25rem; color: var(--text-main); margin-bottom: 8px; }
.project-focus { font-size: 0.8rem; color: var(--cyber-green); margin-bottom: 16px; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 1px; }
.project-desc { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 24px; flex-grow: 1; }
.project-links { margin-top: auto; border-top: 1px solid #1f2937; padding-top: 16px; }
.project-links a { color: var(--cyber-cyan); text-decoration: none; font-family: var(--font-mono); font-size: 0.9rem; transition: var(--transition); }
.project-links a:hover { text-shadow: 0 0 8px var(--cyber-cyan); }