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

:root {
    --bg: #f8f9fc;
    --surface: #ffffff;
    --surface-hover: #f1f4f9;
    --text: #0f172a;
    --text-secondary: #64748b;
    --accent: #2563eb;
    --accent-light: #dbeafe;
    --accent-glow: rgba(37, 99, 235, 0.12);
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    --radius: 16px;
    --radius-sm: 12px;
    --shadow-card: 0 1px 3px rgba(15,23,42,0.04), 0 4px 16px rgba(15,23,42,0.06);
    --shadow-card-hover: 0 4px 24px rgba(15,23,42,0.10);
    --glass-bg: rgba(255,255,255,0.7);
    --glass-border: rgba(255,255,255,0.6);
    --transition: 0.3s cubic-bezier(0.2, 0, 0, 1);
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    line-height: 1.6;
}

h1, h2, h3, h4 { letter-spacing: -0.03em; text-wrap: balance; line-height: 1.1; }
p { text-wrap: pretty; color: var(--text-secondary); }
a { color: inherit; text-decoration: none; }

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ─── NAV ─── */
nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    padding: 12px 16px;
}
.nav-inner {
    max-width: 960px; margin: 0 auto;
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: 0 1px 8px rgba(15,23,42,0.06);
}
.nav-logo {
    display: flex; align-items: center; gap: 10px;
}
.nav-logo-icon {
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 16px;
}
.nav-logo-text { font-weight: 700; font-size: 18px; letter-spacing: -0.02em; }
.nav-links { display: flex; gap: 4px; }
.nav-links a {
    padding: 8px 14px; border-radius: 10px; font-size: 14px; font-weight: 500;
    color: var(--text-secondary); transition: all var(--transition);
}
.nav-links a:hover { color: var(--text); background: var(--surface-hover); }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.nav-cta {
    padding: 8px 18px; border-radius: var(--radius-sm);
    background: var(--accent); color: white;
    font-size: 14px; font-weight: 600; border: none; cursor: pointer;
    transition: all var(--transition);
    display: inline-block;
}
.nav-cta:hover { background: #1d4ed8; }

/* Language Switcher */
.lang-switcher { position: relative; }
.lang-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 8px 12px; border-radius: 10px;
    background: transparent; border: 1px solid var(--border);
    color: var(--text-secondary); font-size: 14px; font-weight: 500;
    cursor: pointer; transition: all var(--transition);
}
.lang-btn:hover { background: var(--surface-hover); border-color: var(--border-hover); color: var(--text); }
.lang-btn svg { width: 16px; height: 16px; }
.lang-dropdown {
    position: absolute; top: calc(100% + 8px); right: 0;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 4px;
    box-shadow: var(--shadow-card);
    min-width: 180px;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: all var(--transition);
    z-index: 1000;
}
.lang-dropdown.show {
    opacity: 1; visibility: visible; transform: translateY(0);
}
.lang-option {
    display: block; width: 100%;
    padding: 8px 12px; border-radius: 8px;
    background: transparent; border: none;
    color: var(--text-secondary); font-size: 14px; font-weight: 500;
    text-align: left; cursor: pointer;
    transition: all var(--transition);
}
.lang-option:hover { background: var(--surface-hover); color: var(--text); }

/* ─── HERO ─── */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    text-align: center; position: relative; overflow: hidden;
    padding-top: 80px;
}
.hero::before {
    content: ''; position: absolute;
    top: -30%; left: 50%; transform: translateX(-50%);
    width: 800px; height: 600px;
    background: radial-gradient(ellipse, var(--accent-glow), transparent 70%);
    pointer-events: none;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 6px 16px; border-radius: 999px;
    background: var(--surface); border: 1px solid var(--border);
    font-size: 13px; font-weight: 500; color: var(--text-secondary);
    margin-bottom: 32px;
}
.hero-badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--accent);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 0.4; transform: scale(0.9); }
    50% { opacity: 1; transform: scale(1.1); }
}
.hero h1 {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800; margin-bottom: 20px;
}
.hero h1.hero-name {
    font-family: 'Marck Script', cursive;
    font-weight: 400;
    font-size: clamp(3.5rem, 9vw, 6.5rem);
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 50%, #2563eb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shine 3s linear infinite;
    letter-spacing: 0.02em;
}
.hero h1 span {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero p {
    font-size: 18px; max-width: 560px; margin: 0 auto 40px;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: var(--radius);
    background: var(--text); color: white;
    font-size: 15px; font-weight: 600;
    transition: all var(--transition);
}
.btn-primary:hover { background: #1e293b; transform: translateY(-1px); }
.btn-glass {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    font-size: 15px; font-weight: 600;
    transition: all var(--transition);
}
.btn-glass:hover { background: var(--surface-hover); border-color: var(--border-hover); }
.hero-scroll {
    margin-top: 60px;
    animation: float 4s ease-in-out infinite;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: all var(--transition);
}
.hero-scroll:hover {
    color: var(--accent);
    transform: translateY(-4px);
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

/* ─── SECTION COMMON ─── */
section { padding: 100px 0; }
.section-alt { background: linear-gradient(180deg, var(--bg) 0%, #f0f4f8 50%, var(--bg) 100%); }
.section-header { margin-bottom: 48px; }
.section-header h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.section-header-bar { width: 48px; height: 4px; border-radius: 2px; background: var(--accent); }

/* ─── ABOUT ─── */
.about-grid {
    display: grid; grid-template-columns: 260px 1fr; gap: 40px; align-items: start;
}
.about-photo {
    position: relative;
}
.about-photo-inner {
    width: 100%; aspect-ratio: 1/1; border-radius: 24px; overflow: hidden;
    border: 1px solid var(--border); box-shadow: var(--shadow-card);
    background: var(--accent-light);
    display: flex; align-items: center; justify-content: center;
    font-size: 80px; color: var(--accent);
}
.about-photo-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.about-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 24px; padding: 36px;
    box-shadow: var(--shadow-card);
}
.about-card h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 16px; }
.about-card p { margin-bottom: 24px; font-size: 15px; }
.about-meta { display: flex; flex-direction: column; gap: 12px; }
.about-meta-item {
    display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--text-secondary);
}
.about-meta-icon {
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.about-meta-item a { color: var(--text); font-weight: 600; }
.about-meta-item a:hover { color: var(--accent); }

/* ─── EXPERIENCE ─── */
.timeline { position: relative; padding-left: 40px; }
.timeline::before {
    content: ''; position: absolute; left: 16px; top: 8px; bottom: 8px;
    width: 1px; background: var(--border);
}
.timeline-item {
    position: relative; margin-bottom: 8px;
}
.timeline-dot {
    position: absolute; left: -30px; top: 24px;
    width: 12px; height: 12px; border-radius: 50%;
    border: 2px solid var(--accent); background: var(--bg);
    transition: background var(--transition);
}
.timeline-item:hover .timeline-dot { background: var(--accent); }
.timeline-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}
.timeline-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border-hover);
}
.timeline-title { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.timeline-company { font-size: 14px; font-weight: 600; color: var(--accent); }
.timeline-meta {
    display: flex; flex-wrap: wrap; gap: 16px; margin-top: 10px;
    font-size: 13px; color: var(--text-secondary);
}
.timeline-meta span { display: flex; align-items: center; gap: 4px; }

/* ─── EDUCATION ─── */
.edu-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 24px; padding: 32px;
    box-shadow: var(--shadow-card);
    display: flex; gap: 16px; align-items: flex-start;
}
.edu-icon {
    width: 48px; height: 48px; border-radius: var(--radius);
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    font-size: 22px;
}
.edu-card h3 { font-size: 17px; font-weight: 700; }
.edu-card h3 a:hover { color: var(--accent); }
.edu-card .subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }
.edu-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.tag {
    padding: 4px 12px; border-radius: 999px; font-size: 12px; font-weight: 500;
}
.tag-muted { background: var(--surface-hover); color: var(--text-secondary); }
.tag-accent { background: var(--accent-light); color: var(--accent); font-weight: 600; }

/* ─── AWARDS ─── */
.awards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
.award-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow-card);
    display: flex; gap: 14px; align-items: flex-start;
    transition: all var(--transition);
}
.award-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border-hover);
}
.award-icon {
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
    font-size: 18px;
}
.award-card h3 { font-size: 15px; font-weight: 700; }
.award-card:hover h3 { color: var(--accent); }
.award-card .meta { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ─── SKILLS ─── */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.skill-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}
.skill-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--border-hover);
}
.skill-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 16px; }
.skill-item {
    display: flex; align-items: center; gap: 10px;
    padding: 6px 0; font-size: 14px; color: var(--text-secondary);
}
.skill-check {
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 11px; flex-shrink: 0;
}

/* ─── LANGUAGES ─── */
.lang-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
.lang-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    box-shadow: var(--shadow-card);
    display: flex; align-items: center; gap: 16px;
}
.lang-icon {
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    background: var(--accent-light); color: var(--accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
}
.lang-card h3 { font-size: 15px; font-weight: 700; }
.lang-card p { font-size: 13px; margin: 0; }

/* ─── CONTACT ─── */
.contact { text-align: center; }
.contact h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
.contact p { max-width: 420px; margin: 0 auto 36px; }
.contact-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-accent {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 28px; border-radius: var(--radius);
    background: var(--accent); color: white;
    font-size: 15px; font-weight: 600;
    transition: all var(--transition);
    box-shadow: 0 0 24px -6px rgba(37,99,235,0.35);
}
.btn-accent:hover { background: #1d4ed8; transform: translateY(-1px); }

/* ─── FOOTER ─── */
footer {
    padding: 32px 0; border-top: 1px solid var(--border);
    text-align: center; font-size: 14px; color: var(--text-secondary);
}

/* ─── SVG ICONS ─── */
.icon { width: 16px; height: 16px; display: inline-block; vertical-align: middle; }
.icon-lg { width: 20px; height: 20px; }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions { gap: 6px; }
    .nav-cta { padding: 8px 14px; font-size: 13px; }
    .lang-btn { padding: 8px 10px; }
    .about-grid { grid-template-columns: 1fr; }
    .about-photo-inner { max-width: 200px; margin: 0 auto; }
    .awards-grid, .lang-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.8rem; }
    section { padding: 64px 0; }
}
@media (max-width: 480px) {
    .hero-actions { flex-direction: column; align-items: center; }
    .btn-primary, .btn-glass, .btn-accent { width: 100%; justify-content: center; }
    .timeline { padding-left: 28px; }
    .nav-actions { flex-wrap: wrap; }
}