:root {
    --bg-dark: #070a13;
    --accent: #3ad59f;
    --accent-secondary: #00d2ff;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --gradient: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', 'Noto Sans SC', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background */
#bg-canvas {
    position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
    z-index: -1; pointer-events: none;
}

/* Utilities */
.container { max-width: 1200px; margin: 0 auto; padding: 0 2rem; }
.highlight { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.glass-card {
    background: var(--card-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border); border-radius: 20px; transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(0, 210, 255, 0.15);
    border-color: rgba(58, 213, 159, 0.3);
}
.section { padding: 6rem 0; }
.section-title { font-size: 2.8rem; margin-bottom: 3.5rem; font-weight: 800; letter-spacing: -1px; }
.mt-4 { margin-top: 1.5rem; }

/* Navigation */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    backdrop-filter: blur(15px); background: rgba(7, 10, 19, 0.75);
    border-bottom: 1px solid var(--card-border);
}
.nav-container {
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1200px; margin: 0 auto; padding: 1.2rem 2rem;
}
.brand { font-size: 1.5rem; font-weight: 800; text-decoration: none; color: var(--text-primary); letter-spacing: -0.5px;}
.nav-links { display: flex; list-style: none; gap: 2.5rem; }
.nav-links a { text-decoration: none; color: var(--text-primary); font-weight: 500; font-size: 0.95rem; transition: color 0.3s; }
.nav-links a:hover { color: var(--accent); }

/* Hero */
.hero { min-height: 100vh; display: flex; align-items: center; justify-content: space-between; padding-top: 5rem; }
.hero-content { flex: 1; max-width: 650px; }
.hello-badge {
    display: inline-block; padding: 0.6rem 1.2rem; background: rgba(58, 213, 159, 0.1);
    color: var(--accent); border-radius: 50px; font-size: 0.9rem; font-weight: 600; margin-bottom: 1.5rem;
    border: 1px solid rgba(58, 213, 159, 0.2);
}
.name { font-size: 5rem; font-weight: 800; line-height: 1.1; margin-bottom: 1rem; letter-spacing: -2px;}
.roles { font-size: 1.8rem; font-weight: 400; color: var(--text-secondary); margin-bottom: 2.5rem; height: 50px; }
.contact-info { display: flex; flex-direction: column; gap: 1.2rem; margin-bottom: 3rem; }
.contact-item { text-decoration: none; color: var(--text-secondary); display: flex; align-items: center; gap: 1rem; transition: color 0.3s; font-size: 1.1rem;}
.contact-item i { color: var(--accent); font-size: 1.2rem;}
.contact-item:hover { color: var(--text-primary); }
.action-buttons { display: flex; gap: 1.5rem; }
.btn { padding: 0.9rem 2.2rem; border-radius: 50px; font-weight: 600; text-decoration: none; transition: all 0.3s; font-size: 1rem;}
.btn-primary { background: var(--gradient); color: var(--bg-dark); box-shadow: 0 4px 15px rgba(0, 210, 255, 0.3); }
.btn-primary:hover { box-shadow: 0 8px 25px rgba(0, 210, 255, 0.5); transform: translateY(-3px); }
.btn-outline { border: 2px solid var(--card-border); color: var(--text-primary); backdrop-filter: blur(5px);}
.btn-outline:hover { border-color: var(--accent-secondary); color: var(--accent-secondary); background: rgba(0,210,255,0.05);}

.hero-graphic { flex: 1; display: flex; justify-content: center; align-items: center; }
.circle-graphic { width: 380px; height: 380px; border-radius: 50%; position: relative; display: flex; justify-content: center; align-items: center; background: radial-gradient(circle, rgba(0,210,255,0.1) 0%, transparent 70%); }
.glow { position: absolute; width: 100%; height: 100%; border-radius: 50%; box-shadow: 0 0 60px rgba(0, 210, 255, 0.2); animation: pulse 4s infinite alternate ease-in-out; }
.abstract-icon { font-size: 9rem; color: #fff; text-shadow: 0 0 30px rgba(0,210,255,0.8); animation: float 6s ease-in-out infinite; }

@keyframes pulse { 0% { transform: scale(0.95); opacity: 0.6; } 100% { transform: scale(1.05); opacity: 1; } }
@keyframes float { 0% { transform: translateY(0px) rotate(0deg); } 50% { transform: translateY(-25px) rotate(8deg); } 100% { transform: translateY(0px) rotate(0deg); } }

/* Timeline Experience */
.timeline { position: relative; border-left: 2px dashed rgba(255,255,255,0.15); padding-left: 3.5rem; margin-left: 1rem; }
.timeline-item { position: relative; margin-bottom: 5rem; }
.timeline-dot {
    position: absolute; left: -4rem; top: 0; width: 22px; height: 22px;
    background: var(--bg-dark); border: 4px solid var(--accent-secondary); border-radius: 50%;
    box-shadow: 0 0 15px var(--accent-secondary); transition: all 0.3s ease;
}
.timeline-item:hover .timeline-dot { transform: scale(1.3); background: var(--accent-secondary); }
.timeline-date { color: var(--accent); font-weight: 700; margin-bottom: 1rem; font-size: 1rem; letter-spacing: 1.5px; text-transform: uppercase;}
.timeline-content { padding: 2.5rem; }
.timeline-content h3 { font-size: 1.6rem; margin-bottom: 0.3rem; font-weight: 700;}
.timeline-content h3 span { font-size: 1.1rem; font-weight: 400; color: var(--accent-secondary);}
.timeline-content h4 { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 1.8rem; font-weight: 500; }
.job-details { list-style: none; display: flex; flex-direction: column; gap: 1rem; }
.job-details li { position: relative; padding-left: 1.8rem; color: #cbd5e1; font-size: 1.05rem; line-height: 1.7;}
.job-details li::before {
    content: "▹"; position: absolute; left: 0; top: 0; color: var(--accent-secondary); font-weight: 800; font-size: 1.2rem;
}
.job-details li strong { color: var(--text-primary); font-weight: 600; }

/* Education Grid */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 2.5rem; }
.edu-card { padding: 2.5rem; text-align: left; position: relative; overflow: hidden;}
.edu-card::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--gradient); opacity: 0; transition: opacity 0.3s;}
.edu-card:hover::before { opacity: 1; }
.edu-icon { font-size: 3rem; color: var(--accent); margin-bottom: 1.8rem; }
.edu-card h3 { font-size: 1.4rem; margin-bottom: 0.5rem; font-weight: 700;}
.edu-card h3 span { font-size: 1rem; color: var(--text-secondary); font-weight: 500; }
.edu-card h4 { font-size: 1.15rem; color: #e2e8f0; margin-bottom: 0.5rem; font-weight: 600; }
.edu-meta { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 1.8rem; }
.pill { display: inline-block; padding: 0.5rem 1rem; background: rgba(255, 255, 255, 0.05); color: #fff; border-radius: 50px; font-size: 0.85rem; margin-right: 0.5rem; margin-bottom: 0.5rem; border: 1px solid rgba(255,255,255,0.1); font-weight: 500;}

/* Grid Layout for Awards etc */
.grid-layout { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 3rem; align-items: start;}
.cert-list { list-style: none; display: flex; flex-direction: column; gap: 1.2rem; }
.cert-list li { display: flex; align-items: center; gap: 1.2rem; background: var(--card-bg); padding: 1.2rem 1.5rem; border-radius: 16px; border: 1px solid var(--card-border); transition: transform 0.3s ease, border-color 0.3s ease; backdrop-filter: blur(10px);}
.cert-list li:hover { transform: translateX(8px); border-color: rgba(58, 213, 159, 0.4); box-shadow: 0 5px 15px rgba(0,0,0,0.2);}
.cert-list i { color: var(--accent); font-size: 1.4rem; }
.cert-list span { font-size: 1.05rem; font-weight: 500; }

.awards-container { display: flex; flex-direction: column; }
.award-item { display: flex; gap: 1.5rem; align-items: flex-start; border-bottom: 1px solid rgba(255,255,255,0.08); padding-bottom: 1.2rem; margin-bottom: 1.2rem; }
.award-year { font-weight: 800; color: var(--accent-secondary); min-width: 90px; font-size: 1.1rem; }
.award-desc { font-size: 1.05rem; color: #e2e8f0; font-weight: 500;}

.info-card { padding: 2.2rem; }
.info-card h4 { display: flex; align-items: center; gap: 0.8rem; font-size: 1.3rem; margin-bottom: 1.2rem; font-weight: 700;}
.info-card h4 i { color: var(--accent); font-size: 1.4rem;}
.sub-info { font-size: 0.95rem; color: var(--text-secondary); margin-top: 0.8rem; line-height: 1.7;}

.langs { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.2rem; }
.lang-tag { background: rgba(58, 213, 159, 0.1); padding: 0.6rem 1.5rem; border-radius: 50px; border: 1px solid rgba(58, 213, 159, 0.3); color: var(--accent); font-weight: 600; display: flex; align-items: center; gap: 0.5rem;}

.footer { text-align: center; padding: 3rem; border-top: 1px solid rgba(255,255,255,0.05); color: var(--text-secondary); font-size: 0.95rem; margin-top: 6rem; background: rgba(0,0,0,0.2);}

/* Responsive */
@media (max-width: 992px) {
    .name { font-size: 4rem;}
    .circle-graphic { width: 300px; height: 300px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero { flex-direction: column; text-align: center; justify-content: center; padding-top: 8rem; gap: 4rem;}
    .hero-content { align-items: center; display: flex; flex-direction: column; }
    .name { font-size: 3.5rem; }
    .roles { font-size: 1.4rem; height: auto;}
    .action-buttons { justify-content: center; }
    .timeline { padding-left: 2rem; border-left-width: 1px; }
    .timeline-dot { left: -2.3rem; width: 16px; height: 16px; border-width: 3px; }
    .timeline-item { margin-bottom: 3.5rem; }
    .timeline-content { padding: 1.8rem; }
    .circle-graphic { width: 250px; height: 250px; }
    .abstract-icon { font-size: 6rem; }
}