/* ===== Reset & Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:5rem}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:#0b1120;color:#94a3b8;line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
button{cursor:pointer;font-family:inherit}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* ===== Navigation ===== */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(11,17,32,0.8);backdrop-filter:blur(16px) saturate(180%);
  border-bottom:1px solid rgba(255,255,255,0.05);
  height:64px;display:flex;align-items:center;transition:0.3s;
}
.nav--scrolled{background:rgba(11,17,32,0.95);box-shadow:0 4px 30px rgba(0,0,0,0.3)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.nav__logo{
  font-size:1.5rem;font-weight:900;letter-spacing:-0.04em;
  background:linear-gradient(135deg,#22c55e,#14b8a6);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;
}
.nav__logo-accent{-webkit-text-fill-color:#22c55e}
.nav__right{display:flex;align-items:center;gap:12px}
.nav__links{display:flex;gap:2px}
.nav__link{
  padding:8px 18px;border-radius:8px;font-size:0.88rem;font-weight:500;
  color:#64748b;transition:all 0.25s;
}
.nav__link:hover,.nav__link.active{color:#e2e8f0;background:rgba(255,255,255,0.06)}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;padding:8px}
.nav__toggle span{display:block;width:22px;height:2px;background:#94a3b8;border-radius:2px;transition:0.3s}

/* ===== Hero ===== */
.hero{
  min-height:100vh;display:flex;align-items:center;
  padding:96px 0 48px;position:relative;
}
.hero__canvas{position:absolute;inset:0;pointer-events:none;z-index:0}
.hero__grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;position:relative;z-index:1}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:24px;
  padding:6px 16px;border-radius:100px;font-size:0.82rem;font-weight:600;
  background:rgba(34,197,94,0.1);color:#22c55e;border:1px solid rgba(34,197,94,0.2);
}
.hero__badge-dot{
  width:8px;height:8px;border-radius:50%;background:#22c55e;
  animation:badge-pulse 2s ease-in-out infinite;
}
@keyframes badge-pulse{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(34,197,94,0.4)}50%{opacity:0.6;box-shadow:0 0 0 6px rgba(34,197,94,0)}}
.hero__title{
  font-size:clamp(2.4rem,5.5vw,4.2rem);font-weight:900;line-height:1.05;
  letter-spacing:-0.05em;color:#fff;margin-bottom:20px;
}
.hero__cursor{display:inline-block;color:#22c55e;animation:blink 1s step-end infinite;font-weight:300}
@keyframes blink{0%,100%{opacity:1}50%{opacity:0}}
.gradient-text{
  background:linear-gradient(135deg,#22c55e,#14b8a6,#06b6d4,#22c55e);
  background-size:200% auto;-webkit-background-clip:text;-webkit-text-fill-color:transparent;
  animation:gradient-shift 4s ease infinite;
}
@keyframes gradient-shift{0%,100%{background-position:0% center}50%{background-position:100% center}}
.hero__text{
  font-size:1.1rem;color:#64748b;max-width:500px;margin-bottom:32px;line-height:1.8;
}
.hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:32px}
.hero__socials{display:flex;gap:10px}
.hero__socials a{
  width:38px;height:38px;border-radius:10px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);
  color:#64748b;transition:all 0.25s;
}
.hero__socials a:hover{color:#22c55e;background:rgba(34,197,94,0.1);border-color:rgba(34,197,94,0.25);transform:translateY(-2px)}

/* Hero Visual */
.hero__visual{display:flex;justify-content:center;align-items:center}
.hero__image-wrap{position:relative;width:300px;height:300px}
@media(min-width:768px){.hero__image-wrap{width:360px;height:360px}}
.hero__image-frame{
  width:100%;height:100%;border-radius:50%;overflow:hidden;
  border:3px solid rgba(34,197,94,0.3);position:relative;z-index:2;
}
.hero__image-frame img{width:100%;height:100%;object-fit:cover}
.hero__ring{
  position:absolute;border-radius:50%;border:1px solid rgba(34,197,94,0.15);
  top:50%;left:50%;transform:translate(-50%,-50%);
  animation:ring-pulse 4s ease-in-out infinite;
}
.hero__ring--1{width:340px;height:340px}@media(min-width:768px){.hero__ring--1{width:400px;height:400px}}
.hero__ring--2{width:380px;height:380px;animation-delay:0.5s}@media(min-width:768px){.hero__ring--2{width:440px;height:440px}}
.hero__ring--3{width:420px;height:420px;animation-delay:1s}@media(min-width:768px){.hero__ring--3{width:480px;height:480px}}
@keyframes ring-pulse{0%,100%{opacity:0.3;transform:translate(-50%,-50%) scale(1)}50%{opacity:0.6;transform:translate(-50%,-50%) scale(1.04)}}

.hero__scroll{
  position:absolute;bottom:24px;left:50%;transform:translateX(-50%);z-index:2;
  display:flex;flex-direction:column;align-items:center;gap:8px;
}
.hero__scroll span{
  display:block;width:20px;height:32px;border:2px solid rgba(255,255,255,0.15);
  border-radius:10px;position:relative;
}
.hero__scroll span::after{
  content:'';position:absolute;top:5px;left:50%;transform:translateX(-50%);
  width:3px;height:7px;border-radius:2px;background:#22c55e;
  animation:scroll-anim 2s infinite;
}
@keyframes scroll-anim{0%{opacity:1;transform:translateX(-50%) translateY(0)}100%{opacity:0;transform:translateX(-50%) translateY(10px)}}

/* ===== Section ===== */
.section{padding:96px 0}
.section--alt{background:#0f172a}
.section__header{text-align:center;max-width:620px;margin:0 auto 56px}
.section__label{
  display:inline-flex;padding:6px 16px;border-radius:100px;
  font-size:0.78rem;font-weight:600;text-transform:uppercase;letter-spacing:0.12em;
  background:rgba(34,197,94,0.1);color:#22c55e;border:1px solid rgba(34,197,94,0.2);
  margin-bottom:16px;
}
.section__title{
  font-size:clamp(1.8rem,3.2vw,2.6rem);font-weight:800;
  letter-spacing:-0.03em;color:#fff;line-height:1.15;
}
.section__desc{font-size:1.05rem;color:#64748b;margin-top:16px;line-height:1.8}

/* ===== Card ===== */
.card{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:20px;padding:32px;transition:all 0.35s;
}
.card:hover{transform:translateY(-6px);background:rgba(255,255,255,0.04);border-color:rgba(34,197,94,0.2);box-shadow:0 16px 48px rgba(0,0,0,0.3)}
.card__icon{
  width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);
  color:var(--icon-clr);margin-bottom:16px;
}
.card__title{font-size:1.1rem;font-weight:700;color:#fff;margin-bottom:8px}
.card__text{font-size:0.92rem;color:#64748b;line-height:1.7}

/* ===== About ===== */
.about__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:40px}
.about__quote{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:24px;padding:48px;
}
.about__quote blockquote{
  font-size:1.15rem;color:#cbd5e1;line-height:1.8;font-style:italic;
  text-align:center;margin-bottom:32px;
  font-family:'Playfair Display',serif;font-weight:700;
}
.about__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;text-align:center}
.stat__num{display:block;font-size:2.2rem;font-weight:800;color:#22c55e;line-height:1.2}
.stat__label{font-size:0.78rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:#64748b}

/* ===== Research ===== */
.research__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.research__card{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:24px;overflow:hidden;transition:all 0.35s;
}
.research__card:hover{transform:translateY(-6px);box-shadow:0 20px 60px rgba(0,0,0,0.3);border-color:rgba(34,197,94,0.2)}
.research__img{
  height:160px;display:flex;align-items:center;justify-content:center;position:relative;
}
.research__img-icon{font-size:3rem;font-weight:900;color:rgba(255,255,255,0.2);letter-spacing:-0.04em}
.research__body{padding:28px}
.research__tag{
  display:inline-block;padding:4px 14px;border-radius:100px;
  font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:0.08em;
  background:rgba(34,197,94,0.1);color:var(--tag-clr,#22c55e);
  border:1px solid rgba(34,197,94,0.2);margin-bottom:12px;
}
.research__body h3{font-size:1.2rem;font-weight:700;color:#fff;margin-bottom:10px;line-height:1.3}
.research__body p{font-size:0.9rem;color:#64748b;line-height:1.7;margin-bottom:16px}
.research__tags{display:flex;flex-wrap:wrap;gap:6px}
.research__tags span{
  padding:4px 12px;border-radius:6px;font-size:0.82rem;
  background:rgba(255,255,255,0.04);color:#94a3b8;
}

/* ===== Timeline ===== */
.timeline{position:relative;max-width:700px;margin:0 auto}
.timeline::before{
  content:'';position:absolute;left:28px;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,transparent,rgba(34,197,94,0.3),rgba(34,197,94,0.1),transparent);
}
.timeline__item{position:relative;padding-left:72px;padding-bottom:40px}
.timeline__item:last-child{padding-bottom:0}
.timeline__dot{
  position:absolute;left:16px;top:6px;width:26px;height:26px;border-radius:50%;
  background:#0b1120;border:3px solid #22c55e;z-index:1;
  box-shadow:0 0 0 4px rgba(34,197,94,0.1);
}
.timeline__content{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:16px;padding:28px;transition:all 0.3s;
}
.timeline__content:hover{background:rgba(255,255,255,0.04);border-color:rgba(34,197,94,0.15)}
.timeline__date{font-size:0.82rem;font-weight:600;color:#22c55e;display:block;margin-bottom:4px}
.timeline__content h3{font-size:1.05rem;font-weight:700;color:#fff;margin-bottom:2px}
.timeline__org{font-size:0.88rem;color:#64748b;margin-bottom:10px}
.timeline__content p{font-size:0.9rem;color:#94a3b8;line-height:1.7}

/* ===== Skills ===== */
.skills__cols{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.skill{margin-bottom:20px}
.skill__head{display:flex;justify-content:space-between;margin-bottom:8px;font-size:0.9rem}
.skill__head span:first-child{color:#e2e8f0;font-weight:500}
.skill__head span:last-child{color:#22c55e;font-weight:600}
.skill__bar{height:8px;background:rgba(255,255,255,0.06);border-radius:4px;overflow:hidden}
.skill__fill{
  height:100%;border-radius:4px;width:0;
  background:linear-gradient(90deg,var(--fill,#22c55e),transparent);
  transition:width 1.2s cubic-bezier(0.16,1,0.3,1);
}
.skill__fill.animated{width:var(--target-width)}
.skills__tools{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tool-card{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:16px;padding:24px;text-align:center;transition:all 0.3s;
}
.tool-card:hover{border-color:rgba(34,197,94,0.2);transform:translateY(-3px)}
.tool-card__icon{display:block;font-size:1.8rem;margin-bottom:8px;color:#22c55e;line-height:1}
.tool-card__icon--emerald{color:#22c55e}
.tool-card__icon--cyan{color:#06b6d4}
.tool-card__icon--purple{color:#a855f7}
.tool-card strong{display:block;font-size:0.9rem;color:#fff;margin-bottom:4px}
.tool-card small{font-size:0.75rem;color:#64748b;text-transform:uppercase;letter-spacing:0.06em}

/* ===== Testimonials ===== */
.testimonials__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.testimonial{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:20px;padding:28px;transition:all 0.3s;
}
.testimonial:hover{transform:translateY(-4px);border-color:rgba(34,197,94,0.15)}
.testimonial__quote p{font-size:0.9rem;color:#94a3b8;line-height:1.7;margin-bottom:20px;font-style:italic}
.testimonial__author{display:flex;align-items:center;gap:12px}
.testimonial__avatar{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:0.9rem;flex-shrink:0;
}
.testimonial__author strong{display:block;font-size:0.85rem;color:#e2e8f0;font-weight:600}
.testimonial__author span{font-size:0.78rem;color:#64748b}

/* ===== Achievements ===== */
.achievements__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ach-card{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:16px;padding:24px;transition:all 0.3s;
}
.ach-card:hover{transform:translateY(-4px);border-color:rgba(34,197,94,0.15);background:rgba(255,255,255,0.04)}
.ach-card__icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);
  color:var(--ac);margin-bottom:12px;
}
.ach-card h3{font-size:0.95rem;font-weight:700;color:#fff;margin-bottom:4px}
.ach-card > span{font-size:0.78rem;color:var(--ac);font-weight:500;display:block;margin-bottom:8px}
.ach-card p{font-size:0.85rem;color:#64748b;line-height:1.6}

/* ===== Contact ===== */
.contact__grid{display:grid;grid-template-columns:1fr 1.5fr;gap:40px;align-items:start}
.contact__info{display:flex;flex-direction:column;gap:20px}
.contact__item{display:flex;align-items:flex-start;gap:14px}
.contact__item-icon{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
  background:rgba(34,197,94,0.1);border:1px solid rgba(34,197,94,0.2);color:#22c55e;
}
.contact__item-label{display:block;font-size:0.72rem;font-weight:600;text-transform:uppercase;letter-spacing:0.1em;color:#64748b;margin-bottom:2px}
.contact__item a,.contact__item span{color:#e2e8f0;font-size:0.92rem}
.contact__item a:hover{color:#22c55e}
.contact__socials{margin-top:8px}
.contact__socials-label{font-size:0.85rem;color:#64748b;margin-bottom:12px;font-weight:500}
.contact__socials-links{display:flex;gap:10px}
.contact__socials-links a{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.06);
  color:#64748b;transition:all 0.25s;
}
.contact__socials-links a:hover{color:#22c55e;background:rgba(34,197,94,0.1);border-color:rgba(34,197,94,0.25);transform:translateY(-2px)}

.contact__form{
  background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.06);
  border-radius:20px;padding:32px;
}
.form__row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form__group{margin-bottom:16px}
.form__group label{display:block;font-size:0.85rem;font-weight:600;margin-bottom:6px;color:#e2e8f0}
.form__group input,.form__group textarea{
  width:100%;padding:12px 16px;border-radius:12px;
  background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.08);
  color:#e2e8f0;font-size:0.92rem;font-family:inherit;transition:border-color 0.25s,box-shadow 0.25s;
}
.form__group input:focus,.form__group textarea:focus{outline:none;border-color:#22c55e;box-shadow:0 0 0 3px rgba(34,197,94,0.1)}
.form__group textarea{resize:vertical;min-height:120px}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:12px;
  font-size:0.9rem;font-weight:600;font-family:inherit;
  border:none;transition:all 0.25s;
}
.btn--primary{
  background:linear-gradient(135deg,#22c55e,#16a34a);color:#0b1120;
  box-shadow:0 4px 16px rgba(34,197,94,0.25);
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(34,197,94,0.35)}
.btn--ghost{
  background:transparent;color:#e2e8f0;border:2px solid rgba(255,255,255,0.1);
}
.btn--ghost:hover{border-color:#22c55e;color:#22c55e;transform:translateY(-2px)}
.btn--block{width:100%;justify-content:center}

/* ===== Footer ===== */
.footer{border-top:1px solid rgba(255,255,255,0.05);padding:32px 0}
.footer__inner{display:flex;justify-content:space-between;align-items:center}
.footer__copy{font-size:0.85rem;color:#475569}
.footer__links{display:flex;gap:24px}
.footer__links a{font-size:0.85rem;color:#475569;transition:color 0.2s}
.footer__links a:hover{color:#22c55e}

/* ===== Mobile Menu States ===== */
.nav__links.open{display:flex}
.nav__toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav__toggle.active span:nth-child(2){opacity:0}
.nav__toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== Fade-in Animation ===== */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity 0.7s ease,transform 0.7s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* ===== Responsive ===== */
@media(max-width:900px){
  .hero__grid{grid-template-columns:1fr;gap:40px;text-align:center}
  .hero__text{margin:0 auto 32px}
  .hero__actions{justify-content:center}
  .hero__socials{justify-content:center}
  .hero__visual{order:-1}
  .about__grid{grid-template-columns:1fr;max-width:500px;margin:0 auto 40px}
  .research__grid{grid-template-columns:1fr;max-width:500px;margin:0 auto}
  .testimonials__grid{grid-template-columns:1fr;max-width:500px;margin:0 auto}
  .achievements__grid{grid-template-columns:repeat(2,1fr)}
  .contact__grid{grid-template-columns:1fr}
  .skills__cols{grid-template-columns:1fr;max-width:500px;margin:0 auto}
  .about__stats{grid-template-columns:repeat(2,1fr);gap:20px}
}

@media(max-width:640px){
  .nav__links{display:none;position:absolute;top:64px;left:0;right:0;background:#0b1120;border-bottom:1px solid rgba(255,255,255,0.06);flex-direction:column;padding:12px;gap:2px}
  .nav__toggle{display:flex}
  .hero__title{font-size:2rem}
  .hero__image-wrap{width:220px;height:220px}
  .hero__ring--1{width:260px;height:260px}.hero__ring--2{width:300px;height:300px}.hero__ring--3{width:340px;height:340px}
  .hero{padding:80px 0 40px}
  .section{padding:56px 0}
  .section__header{margin-bottom:32px}
  .achievements__grid{grid-template-columns:1fr}
  .skills__tools{grid-template-columns:1fr 1fr}
  .form__row{grid-template-columns:1fr}
  .footer__inner{flex-direction:column;gap:12px;text-align:center}
  .timeline__item{padding-left:56px}
  .timeline::before{left:16px}
  .timeline__dot{left:4px;width:24px;height:24px}
  .about__quote{padding:28px}
  .about__quote blockquote{font-size:1rem}
  .research__body{padding:20px}
  .testimonial{padding:20px}
  .contact__form{padding:24px}
}