/* =========================================================
   TOKENS
========================================================= */
:root{
  --bg:            #0a0e17;
  --bg-alt:        #0d1320;
  --panel:         #121a29;
  --panel-border:  #232c40;
  --text:          #e7ecf3;
  --text-muted:    #8a94a8;
  --text-dim:      #5b6478;
  --accent:        #2de1c2;
  --accent-dim:    #1a8f7c;
  --accent-soft:   rgba(45,225,194,0.10);
  --amber:         #f5a623;

  --font-display:  'Space Grotesk', sans-serif;
  --font-body:     'Inter', sans-serif;
  --font-mono:     'JetBrains Mono', monospace;

  --maxw: 1160px;
  --radius: 14px;
}

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

html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,h2,h3{
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0 0 .5em;
  letter-spacing: -0.01em;
}

p{ margin: 0 0 1em; color: var(--text-muted); }

a{ color: inherit; text-decoration: none; }

ul{ margin:0; padding: 0 0 0 1.1em; }
li{ margin-bottom: .55em; color: var(--text-muted); }

img{ max-width: 100%; display: block; }

.section__inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 32px;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--accent);
  margin-bottom: 14px;
}

.section__title{
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  max-width: 20ch;
}

/* subtle grain overlay for texture */
.grain{
  position: fixed; inset:0; pointer-events:none; z-index: 500;
  opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =========================================================
   REVEAL ON SCROLL
========================================================= */
.reveal{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s ease, transform .8s ease;
}
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* =========================================================
   NAV
========================================================= */
.nav{
  position: fixed; top:0; left:0; right:0; z-index: 200;
  border-bottom: 1px solid transparent;
  transition: background .35s ease, border-color .35s ease, backdrop-filter .35s ease;
}
.nav.is-scrolled{
  background: rgba(10,14,23,0.78);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--panel-border);
}
.nav__inner{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav__brand{
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 600;
  display: flex; align-items: baseline; gap: 8px;
  letter-spacing: .02em;
}
.nav__bracket{ color: var(--accent); }
.nav__brand-sub{
  font-size: .68rem; color: var(--text-dim); font-weight: 400;
  letter-spacing: .08em;
}
.nav__links{
  display: flex; align-items: center; gap: 30px;
  font-size: .92rem;
}
.nav__links a{
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  transition: color .2s ease;
}
.nav__links a:hover, .nav__links a.is-active{ color: var(--text); }
.nav__links a:not(.nav__cta)::after{
  content:'';
  position: absolute; left:0; right: 100%; bottom:-2px; height:1px;
  background: var(--accent);
  transition: right .25s ease;
}
.nav__links a:not(.nav__cta):hover::after,
.nav__links a.is-active::after{ right: 0; }

.nav__cta{
  font-family: var(--font-mono);
  font-size: .82rem;
  border: 1px solid var(--accent-dim);
  color: var(--accent) !important;
  padding: 7px 16px;
  border-radius: 100px;
  transition: background .2s ease, color .2s ease;
}
.nav__cta:hover{ background: var(--accent-soft); }

.nav__toggle{
  display:none; flex-direction: column; gap: 5px;
  background:none; border:none; cursor:pointer; padding: 6px;
}
.nav__toggle span{
  width: 22px; height: 2px; background: var(--text); display:block;
  transition: transform .25s ease, opacity .25s ease;
}

/* =========================================================
   HERO
========================================================= */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center;
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas{
  position: absolute; inset: 0; z-index: 0;
  width: 100%; height: 100%;
}
.hero__layer{
  position: absolute; inset: -10% -10% -10% -10%;
  z-index: -1;
  will-change: transform;
}
.hero__layer--grid{
  background-image:
    linear-gradient(rgba(45,225,194,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,225,194,0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 40%, transparent 85%);
}
.hero__layer--photo{
  background-image: url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?fm=jpg&q=70&w=1800&auto=format&fit=crop');
  background-size: cover;
  background-position: center;
  opacity: .16;
  filter: grayscale(40%) contrast(1.1);
}
.hero__scrim{
  position: absolute; inset: 0; z-index: 0;
  background:
    radial-gradient(ellipse 60% 50% at 50% 30%, rgba(45,225,194,0.08), transparent 60%),
    linear-gradient(180deg, rgba(10,14,23,0.2) 0%, rgba(10,14,23,0.55) 55%, var(--bg) 100%);
}

.hero__content{
  position: relative; z-index: 2;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 140px 32px 100px;
  width: 100%;
}

.terminal{
  font-family: var(--font-mono);
  font-size: .92rem;
  color: var(--accent);
  min-height: 1.4em;
  margin-bottom: 22px;
  white-space: pre-wrap;
}
.terminal::after{
  content:'▌';
  animation: blink 1s step-end infinite;
  margin-left: 2px;
}
@keyframes blink{ 50%{ opacity: 0; } }

.hero__name{
  font-size: clamp(2.6rem, 7vw, 5rem);
  line-height: 1.02;
  margin-bottom: 18px;
  background: linear-gradient(100deg, #ffffff 30%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__title{
  font-family: var(--font-mono);
  font-size: clamp(.82rem, 1.6vw, 1rem);
  color: var(--text-muted);
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 38px;
  letter-spacing: .01em;
}
.hero__dot{ color: var(--accent-dim); }

.hero__actions{ display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 46px; }

.btn{
  font-family: var(--font-mono);
  font-size: .88rem;
  padding: 13px 26px;
  border-radius: 100px;
  border: 1px solid transparent;
  display: inline-flex; align-items: center; gap: 8px;
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.btn--primary{
  background: var(--accent);
  color: #06110e;
  font-weight: 600;
}
.btn--primary:hover{ transform: translateY(-2px); background: #4bf0d4; }
.btn--ghost{
  border-color: var(--panel-border);
  color: var(--text);
}
.btn--ghost:hover{ border-color: var(--accent-dim); transform: translateY(-2px); }

.hero__badge{
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  border: 1px solid var(--panel-border);
  background: rgba(18,26,41,0.6);
  padding: 9px 16px;
  border-radius: 100px;
}

.pulse-dot{
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(45,225,194,.6);
  animation: pulse 2s infinite;
  flex: none;
}
@keyframes pulse{
  0%{ box-shadow: 0 0 0 0 rgba(45,225,194,.5); }
  70%{ box-shadow: 0 0 0 8px rgba(45,225,194,0); }
  100%{ box-shadow: 0 0 0 0 rgba(45,225,194,0); }
}

.hero__scroll{
  position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%);
  width: 26px; height: 42px; border: 1px solid var(--panel-border);
  border-radius: 20px; z-index: 2;
  display: flex; justify-content: center; padding-top: 8px;
}
.hero__scroll span{
  width: 4px; height: 8px; border-radius: 2px; background: var(--accent);
  animation: scrollDown 1.8s ease infinite;
}
@keyframes scrollDown{
  0%{ transform: translateY(0); opacity: 1; }
  70%{ transform: translateY(12px); opacity: 0; }
  100%{ opacity: 0; }
}

/* =========================================================
   ABOUT
========================================================= */
.about{ padding: 130px 0; position: relative; }
.about__grid{
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 70px;
  align-items: center;
}
.about__text{ max-width: 52ch; }

.stat-row{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.stat{
  border-top: 1px solid var(--panel-border);
  padding-top: 14px;
}
.stat__num{
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}
.stat__label{
  font-size: .78rem;
  color: var(--text-dim);
  line-height: 1.3;
}

.about__card{ display: flex; justify-content: center; }

.id-badge{
  width: 280px;
  background: linear-gradient(165deg, var(--panel) 0%, #0e1523 100%);
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  padding: 26px;
  position: relative;
  box-shadow: 0 30px 60px -20px rgba(0,0,0,0.6);
  transform: rotate(-3deg);
  transition: transform .35s ease;
}
.id-badge:hover{ transform: rotate(0deg); }
.id-badge__photo{
  width: 100%; aspect-ratio: 4/3; border-radius: 12px; margin-bottom: 16px;
  background-image: linear-gradient(160deg, rgba(45,225,194,0.25), rgba(10,14,23,0.9)),
    url('https://images.unsplash.com/photo-1618588845382-4267677cfc11?fm=jpg&q=70&w=800&auto=format&fit=crop');
  background-size: cover; background-position: center;
  border: 1px solid var(--panel-border);
}
.id-badge__strip{
  height: 6px; border-radius: 3px; margin-bottom: 16px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 8px, transparent 8px 14px);
  opacity: .6;
}
.id-badge__label{
  font-family: var(--font-mono); font-size: .68rem; letter-spacing: .14em;
  color: var(--text-dim); margin-bottom: 6px;
}
.id-badge__name{ font-size: 1.3rem; margin-bottom: 2px; }
.id-badge__role{ font-size: .85rem; margin-bottom: 18px; }
.id-badge__row{
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: .74rem;
  padding: 8px 0; border-top: 1px dashed var(--panel-border);
  color: var(--text-dim);
}
.id-badge__ok{ color: var(--accent); }
.id-badge__barcode{
  margin-top: 16px; height: 26px; border-radius: 4px;
  background: repeating-linear-gradient(90deg, var(--text-dim) 0 2px, transparent 2px 5px);
  opacity: .4;
}

/* =========================================================
   SKILLS
========================================================= */
.skills{ padding: 130px 0; position: relative; overflow: hidden; }
.skills__bg{
  position: absolute; inset: -15% -5%;
  background-image: radial-gradient(rgba(45,225,194,0.09) 1px, transparent 1px);
  background-size: 28px 28px;
  z-index: 0;
  will-change: transform;
}
.skills .section__inner{ position: relative; z-index: 1; }

.skill-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 50px;
}
.skill-card{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color .25s ease, transform .25s ease;
}
.skill-card:hover{ border-color: var(--accent-dim); transform: translateY(-4px); }
.skill-card__head{ display: flex; align-items: baseline; gap: 10px; margin-bottom: 18px; }
.skill-card__id{
  font-family: var(--font-mono); font-size: .7rem; color: var(--accent);
  border: 1px solid var(--accent-dim); border-radius: 4px; padding: 2px 6px;
}
.skill-card h3{ font-size: 1.05rem; margin: 0; }

.chip-list{ display: flex; flex-wrap: wrap; gap: 8px; }
.chip{
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--text-muted);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-border);
  padding: 6px 11px;
  border-radius: 100px;
  white-space: nowrap;
}

/* =========================================================
   EXPERIENCE
========================================================= */
.experience{ padding: 130px 0; }
.timeline{ position: relative; margin-top: 54px; }
.timeline::before{
  content:'';
  position: absolute; left: 9px; top: 6px; bottom: 6px; width: 1px;
  background: linear-gradient(var(--panel-border), var(--panel-border));
}
.tl-item{ position: relative; padding-left: 46px; margin-bottom: 56px; }
.tl-item:last-child{ margin-bottom: 0; }
.tl-item__marker{
  position: absolute; left: 0; top: 6px;
  width: 19px; height: 19px; border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--panel-border);
  display: flex; align-items: center; justify-content: center;
}
.tl-item__meta{ display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.tl-item__date{
  font-family: var(--font-mono); font-size: .76rem; color: var(--text-dim);
  letter-spacing: .04em;
}
.tag{
  font-family: var(--font-mono); font-size: .66rem; letter-spacing: .08em;
  padding: 3px 9px; border-radius: 100px;
}
.tag--active{ color: var(--accent); border: 1px solid var(--accent-dim); background: var(--accent-soft); }

.tl-item h3{ font-size: 1.25rem; margin-bottom: 4px; }
.tl-item__org{ color: var(--text-dim); font-size: .9rem; margin-bottom: 16px; }

.education{
  margin-top: 60px;
  display: flex; align-items: center; gap: 20px;
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 24px 28px;
  background: var(--panel);
}
.education__icon{ font-size: 1.6rem; color: var(--accent); }
.education h3{ font-size: 1.02rem; margin-bottom: 2px; }
.education p{ margin: 0; font-size: .88rem; }

/* =========================================================
   CERTIFICATIONS
========================================================= */
.certs{ padding: 130px 0; }
.cert-grid{
  margin-top: 50px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.cert-card{
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 22px;
  background: linear-gradient(160deg, var(--panel), var(--bg-alt));
  transition: border-color .25s ease, transform .25s ease;
}
.cert-card:hover{ border-color: var(--accent-dim); transform: translateY(-3px); }
.cert-card__code{
  display: block;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--accent);
  margin-bottom: 8px;
  letter-spacing: .03em;
}
.cert-card p{ margin: 0; font-size: .84rem; }

/* =========================================================
   PROJECTS
========================================================= */
.projects{ padding: 130px 0; position: relative; overflow: hidden; }
.projects__bg{
  position: absolute; inset: -10%;
  background-image:
    linear-gradient(rgba(45,225,194,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(45,225,194,0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  z-index: 0; will-change: transform;
}
.projects .section__inner{ position: relative; z-index: 1; }

.project-card{
  margin-top: 50px;
  border: 1px solid var(--panel-border);
  border-radius: 20px;
  background: var(--panel);
  overflow: hidden;
}
.project-card__head{
  padding: 34px 34px 10px;
  display: flex; justify-content: space-between; gap: 30px; flex-wrap: wrap;
}
.project-card__tag{
  font-family: var(--font-mono); font-size: .72rem; color: var(--accent);
  letter-spacing: .1em;
}
.project-card__head h3{ font-size: 1.4rem; max-width: 30ch; margin: 8px 0 12px; }
.project-card__objective{ max-width: 52ch; margin: 0; }

.project-card__stats{ display: flex; gap: 26px; align-items: flex-start; }
.project-card__stats div{
  font-family: var(--font-mono); font-size: .74rem; color: var(--text-dim);
  text-align: center;
}
.project-card__stats span{
  display: block; font-family: var(--font-display); font-size: 1.6rem;
  color: var(--text); font-weight: 700;
}

.phase-list{ padding: 10px 18px 24px; }
.phase{ border-top: 1px solid var(--panel-border); }
.phase:last-child{ border-bottom: 1px solid var(--panel-border); }
.phase__head{
  width: 100%;
  display: flex; align-items: center; gap: 16px;
  background: none; border: none; cursor: pointer;
  color: var(--text);
  padding: 18px 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  text-align: left;
}
.phase__num{ font-family: var(--font-mono); color: var(--accent-dim); font-size: .82rem; }
.phase__title{ flex: 1; font-weight: 500; }
.phase__chevron{ color: var(--text-dim); transition: transform .25s ease; }
.phase.is-open .phase__chevron{ transform: rotate(180deg); color: var(--accent); }

.phase__body{
  max-height: 0; overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
  padding: 0 16px;
}
.phase.is-open .phase__body{ max-height: 260px; padding: 0 16px 20px 46px; }

.project-card__tags{
  padding: 0 34px 34px;
  display: flex; flex-wrap: wrap; gap: 8px;
}

/* =========================================================
   CONTACT
========================================================= */
.contact{ padding: 140px 0 100px; position: relative; overflow: hidden; }
.contact__bg{
  position: absolute; inset: -10%;
  background-image: url('https://images.unsplash.com/photo-1618588845382-4267677cfc11?fm=jpg&q=60&w=1600&auto=format&fit=crop');
  background-size: cover; background-position: center;
  opacity: .05; filter: grayscale(60%);
  z-index: 0; will-change: transform;
}
.contact .section__inner{ position: relative; z-index: 1; }
.contact__sub{ max-width: 44ch; font-size: 1.02rem; }

.contact-grid{
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.contact-card{
  display: flex; flex-direction: column; gap: 6px;
  border: 1px solid var(--panel-border);
  background: var(--panel);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color .25s ease, transform .25s ease;
  position: relative;
}
.contact-card:hover{ border-color: var(--accent-dim); transform: translateY(-4px); }
.contact-card__icon{
  width: 40px; height: 40px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: var(--accent-soft); color: var(--accent);
  font-family: var(--font-mono); font-size: 1.1rem;
  margin-bottom: 8px;
}
.contact-card__label{
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .1em;
  color: var(--text-dim);
}
.contact-card__value{ font-size: 1.08rem; color: var(--text); }
.contact-card__action{
  margin-top: 10px;
  font-family: var(--font-mono); font-size: .78rem; color: var(--accent);
}

.copy-toast{
  position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(20px);
  font-family: var(--font-mono); font-size: .82rem;
  background: var(--panel); border: 1px solid var(--accent-dim); color: var(--accent);
  padding: 10px 18px; border-radius: 100px;
  opacity: 0; pointer-events: none;
  transition: opacity .25s ease, transform .25s ease;
  z-index: 300;
}
.copy-toast.is-shown{ opacity: 1; transform: translateX(-50%) translateY(0); }

/* =========================================================
   FOOTER
========================================================= */
.footer{ border-top: 1px solid var(--panel-border); padding: 34px 0; }
.footer__inner{
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer p{ margin:0; font-size: .82rem; color: var(--text-dim); }
.nav__brand--footer{ font-size: .95rem; }

/* =========================================================
   RESPONSIVE
========================================================= */
@media (max-width: 900px){
  .about__grid{ grid-template-columns: 1fr; gap: 50px; }
  .about__card{ order: -1; }
  .skill-grid{ grid-template-columns: repeat(2, 1fr); }
  .cert-grid{ grid-template-columns: repeat(2, 1fr); }
  .stat-row{ grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px){
  .nav__links{
    position: fixed; top: 64px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: rgba(10,14,23,0.98); backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--panel-border);
    max-height: 0; overflow: hidden;
    transition: max-height .3s ease;
  }
  .nav__links.is-open{ max-height: 400px; }
  .nav__links a{ padding: 16px 32px; width: 100%; border-top: 1px solid var(--panel-border); }
  .nav__cta{ margin: 16px 32px; border-radius: 100px; }
  .nav__toggle{ display: flex; }

  .hero__content{ padding-top: 120px; }
  .hero__actions{ flex-direction: column; align-items: stretch; }

  .skill-grid, .cert-grid{ grid-template-columns: 1fr; }
  .contact-grid{ grid-template-columns: 1fr; }
  .project-card__head{ flex-direction: column; }
  .project-card__stats{ gap: 40px; }
}

@media (max-width: 480px){
  .section__inner{ padding: 0 22px; }
  .stat-row{ grid-template-columns: 1fr 1fr; }
}

/* =========================================================
   REDUCED MOTION
========================================================= */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal{ opacity: 1; transform: none; }
}