/* ===== Tokens ===== */
:root{
  --bg:#f7f7f5;
  --surface:#ffffff;
  --ink:#1c1c1e;
  --muted:#5c5c58;
  --line:#e4e4e1;
  --accent:#0f7173;
  --accent-dark:#0a5254;
  --accent-soft:#e6f2f1;
  --chip-bg:#ececea;
  --radius:14px;
  --shadow:0 1px 2px rgba(28,28,30,.04), 0 8px 24px rgba(28,28,30,.06);
  --max:1120px;
}

/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'Work Sans', system-ui, -apple-system, sans-serif;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%; display:block;}
a{color:inherit;}
h1,h2,h3{font-family:'Sora', 'Work Sans', sans-serif; margin:0; text-wrap:balance;}
p{margin:0;}
button{font-family:inherit;}

.skip-link{
  position:absolute; left:-999px; top:auto;
  background:var(--accent); color:#fff; padding:10px 16px; border-radius:8px; z-index:100;
}
.skip-link:focus{left:16px; top:16px;}

.wrap{max-width:var(--max); margin:0 auto; padding:0 24px;}

/* ===== Header ===== */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(247,247,245,.9); backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; padding:16px 24px;}
.brand{font-family:'Sora',sans-serif; font-weight:700; font-size:1.15rem; text-decoration:none; color:var(--ink);}
.brand span{color:var(--accent);}
.main-nav{display:flex; align-items:center; gap:28px;}
.main-nav a{text-decoration:none; font-size:.92rem; font-weight:500; color:var(--ink);}
.main-nav a:hover{color:var(--accent);}
.nav-cta{
  background:var(--accent); color:#fff !important; padding:9px 18px; border-radius:999px;
}
.nav-cta:hover{background:var(--accent-dark); color:#fff !important;}
.nav-toggle{display:none; flex-direction:column; gap:5px; background:none; border:none; padding:6px; cursor:pointer;}
.nav-toggle span{width:22px; height:2px; background:var(--ink); border-radius:2px;}

/* ===== Hero ===== */
.hero{
  padding:72px 24px 56px; text-align:center;
  display:flex; flex-direction:column; align-items:center;
}
.hero-photo-wrap{position:relative; width:168px; height:168px; margin-bottom:24px;}
.hero-photo{
  width:168px; height:168px; border-radius:50%; overflow:hidden;
  border:4px solid var(--surface); box-shadow:var(--shadow);
  position:relative; z-index:2;
  opacity:0; transform:scale(.82) translateY(10px);
  animation:photoIn .9s cubic-bezier(.2,.8,.2,1) .15s forwards, floaty 5s ease-in-out 1.1s infinite;
}
.hero-photo img{width:100%; height:100%; object-fit:cover;}
.hero-ring{
  position:absolute; inset:-10px; border-radius:50%;
  border:2px dashed var(--accent); opacity:.35;
  animation:spin 24s linear infinite;
}
@keyframes photoIn{
  to{opacity:1; transform:scale(1) translateY(0);}
}
@keyframes floaty{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-8px);}
}
@keyframes spin{
  from{transform:rotate(0deg);}
  to{transform:rotate(360deg);}
}
.eyebrow{
  display:inline-block; font-size:.76rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--accent); font-weight:600; margin-bottom:10px;
}
.hero h1{font-size:clamp(2rem,4.5vw,2.9rem); font-weight:800; margin-bottom:8px;}
.hero .role{font-size:1.05rem; color:var(--muted); margin-bottom:18px; font-weight:500;}
.about-lead{max-width:56ch; color:#454541; font-size:1rem; margin:0 auto 30px;}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap; justify-content:center;}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 24px; border-radius:999px; text-decoration:none;
  font-weight:600; font-size:.92rem; border:1px solid transparent; cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);}
.btn-primary{background:var(--accent); color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-ghost{background:var(--surface); color:var(--ink); border-color:var(--line);}
.btn-ghost:hover{border-color:var(--accent); color:var(--accent);}

/* ===== Marquee ===== */
.marquee-section{
  border-top:1px solid var(--line); border-bottom:1px solid var(--line);
  background:var(--surface); overflow:hidden; padding:18px 0;
}
.marquee{width:100%; overflow:hidden;}
.marquee-track{
  display:flex; gap:14px; width:max-content;
  animation:scrollLeft 32s linear infinite;
}
.marquee:hover .marquee-track{animation-play-state:paused;}
.marquee-track .chip{flex-shrink:0;}
@keyframes scrollLeft{
  from{transform:translateX(0);}
  to{transform:translateX(-50%);}
}
.chip{
  display:inline-flex; align-items:center; padding:8px 18px; border-radius:999px;
  background:var(--chip-bg); color:var(--ink); font-size:.86rem; font-weight:500;
  white-space:nowrap;
}

/* ===== Sections ===== */
.section{padding:88px 0;}
.section-alt{background:var(--surface); border-top:1px solid var(--line); border-bottom:1px solid var(--line);}
.section-head{margin-bottom:44px; max-width:60ch;}
.section-head.center{margin-left:auto; margin-right:auto; text-align:center;}
.section-head h2{font-size:clamp(1.5rem,3vw,2.1rem); font-weight:700; margin-top:8px;}
.section-sub{color:var(--muted); margin-top:10px; font-size:.98rem;}

/* About */
.about-grid{display:grid; grid-template-columns:.8fr 1.2fr; gap:48px; align-items:start;}
.about-body p{color:#3d3d3a; margin-bottom:16px; font-size:1rem;}
.lang-row{display:flex; gap:28px; margin-top:24px; flex-wrap:wrap;}
.lang-item{display:flex; flex-direction:column; gap:2px;}
.lang-name{font-weight:600; font-size:.92rem;}
.lang-level{font-size:.8rem; color:var(--muted);}

/* Skills grid */
.skill-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:20px;}
.skill-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:24px; transition:box-shadow .2s ease, transform .2s ease;
}
.skill-card:hover{box-shadow:var(--shadow); transform:translateY(-2px);}
.skill-card h3{font-size:1rem; margin-bottom:8px; color:var(--accent-dark);}
.skill-card p{color:var(--muted); font-size:.9rem;}

/* Timeline */
.timeline{display:flex; flex-direction:column; gap:36px; max-width:760px; margin:0 auto;}
.timeline-item{display:grid; grid-template-columns:150px 1fr; gap:24px;}
.timeline-date{font-weight:600; color:var(--accent); font-size:.9rem; padding-top:4px;}
.timeline-org{color:var(--muted); font-size:.9rem; margin:2px 0 12px;}
.timeline-body h3{font-size:1.1rem;}
.timeline-body ul{margin:0; padding-left:18px; color:#3d3d3a; font-size:.92rem;}
.timeline-body li{margin-bottom:6px;}

/* Projects */
.project-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:24px;}
.project-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  overflow:hidden; display:flex; flex-direction:column;
  transition:box-shadow .2s ease, transform .2s ease;
}
.project-card:hover{box-shadow:var(--shadow); transform:translateY(-3px);}
.project-card-wide{grid-column:span 1;}
.project-thumb{
  height:120px; display:flex; align-items:center; justify-content:center;
  color:#fff; font-family:'Sora',sans-serif; font-weight:700; font-size:1rem; text-align:center; padding:0 16px;
}
.thumb-1{background:linear-gradient(135deg,#0f7173,#0a5254);}
.thumb-2{background:linear-gradient(135deg,#1c8b8d,#0f7173);}
.thumb-3{background:linear-gradient(135deg,#2fa3a1,#127475);}
.thumb-4{background:linear-gradient(135deg,#0a5254,#1c1c1e);}
.thumb-5{background:linear-gradient(135deg,#0f7173,#2fbfa1);}
.thumb-6{background:linear-gradient(135deg,#116466,#0a5254);}
.thumb-7{background:linear-gradient(135deg,#3a3a37,#1c1c1e);}
.project-body{padding:20px 22px 22px; display:flex; flex-direction:column; gap:8px; flex:1;}
.tag{
  align-self:flex-start; font-size:.72rem; text-transform:uppercase; letter-spacing:.06em;
  color:var(--accent-dark); background:var(--accent-soft); padding:4px 10px; border-radius:999px; font-weight:600;
}
.project-body h3{font-size:1.05rem;}
.project-body p{color:var(--muted); font-size:.9rem; flex:1;}
.project-body a{
  margin-top:4px; font-weight:600; font-size:.88rem; color:var(--accent); text-decoration:none;
}
.project-body a:hover{text-decoration:underline;}
.badge-row{display:flex; flex-direction:column; gap:8px; margin-top:6px;}
.badge{
  font-size:.82rem; font-weight:600; background:var(--chip-bg); color:var(--ink);
  padding:9px 14px; border-radius:10px;
}
.badge-link{
  text-decoration:none; text-align:center; transition:background .15s ease, color .15s ease;
}
.badge-link:hover{background:var(--accent); color:#fff;}

/* Education */
.edu-grid{display:grid; grid-template-columns:1fr 1fr; gap:24px; max-width:900px; margin:0 auto;}
.edu-card{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:26px;}
.edu-year{font-weight:700; color:var(--accent); font-size:.86rem; margin-bottom:8px;}
.edu-card h3{font-size:1.05rem; margin-bottom:4px;}
.edu-card p:last-child{color:var(--muted); font-size:.88rem; margin-top:6px;}

/* Contact */
.contact-grid{display:grid; grid-template-columns:.9fr 1.1fr; gap:48px; align-items:start;}
.contact-list{margin-top:26px; display:flex; flex-direction:column; gap:14px;}
.contact-item{
  display:flex; flex-direction:column; gap:2px; text-decoration:none; color:var(--ink);
  background:var(--bg); border:1px solid var(--line); border-radius:12px; padding:14px 18px;
}
.contact-label{font-size:.74rem; text-transform:uppercase; letter-spacing:.06em; color:var(--muted); font-weight:600;}
.contact-value{font-weight:600; font-size:.96rem;}
.contact-form{
  display:flex; flex-direction:column; gap:16px; background:var(--bg);
  border:1px solid var(--line); border-radius:var(--radius); padding:28px;
}
.contact-form label{display:flex; flex-direction:column; gap:6px; font-size:.86rem; font-weight:600; color:var(--ink);}
.contact-form input, .contact-form textarea{
  font-family:inherit; font-size:.94rem; padding:11px 14px; border-radius:10px;
  border:1px solid var(--line); background:var(--surface); color:var(--ink); resize:vertical;
}
.contact-form input:focus, .contact-form textarea:focus{outline:2px solid var(--accent); outline-offset:1px;}
.contact-form button{align-self:flex-start;}
.hp-field{position:absolute; left:-9999px; width:1px; height:1px; opacity:0;}
.form-status{font-size:.88rem; font-weight:600; margin:0;}
.form-status.success{color:var(--accent-dark);}
.form-status.error{color:#b3261e;}

/* Footer */
.site-footer{padding:28px 0; border-top:1px solid var(--line);}
.footer-inner{display:flex; justify-content:space-between; align-items:center; font-size:.86rem; color:var(--muted); flex-wrap:wrap; gap:10px;}
.footer-inner a{text-decoration:none; font-weight:600; color:var(--accent);}

/* ===== Responsive ===== */
@media (max-width:900px){
  .about-grid, .contact-grid{grid-template-columns:1fr; gap:28px;}
  .skill-grid{grid-template-columns:repeat(2,1fr);}
  .project-grid{grid-template-columns:repeat(2,1fr);}
  .edu-grid{grid-template-columns:1fr;}
}
@media (max-width:720px){
  .main-nav{
    position:absolute; top:100%; left:0; right:0; background:var(--surface);
    border-bottom:1px solid var(--line); flex-direction:column; align-items:flex-start;
    padding:16px 24px; gap:16px; display:none;
  }
  .main-nav.open{display:flex;}
  .nav-toggle{display:flex;}
  .timeline-item{grid-template-columns:1fr;}
  .timeline-date{padding-top:0;}
}
@media (max-width:560px){
  .skill-grid, .project-grid{grid-template-columns:1fr;}
}

@media (prefers-reduced-motion: reduce){
  .hero-photo, .hero-ring, .marquee-track, .btn{animation:none !important; transition:none !important;}
  .hero-photo{opacity:1; transform:none;}
}