/* ==========================================================================
   TOKENS
   ========================================================================== */
:root{
  --bg: #090D16;
  --bg-elev: #10182A;
  --bg-elev-2: #16223B;
  --line: rgba(148,163,184,0.14);
  --line-strong: rgba(148,163,184,0.28);
  --text: #E9EEF7;
  --text-muted: #8B9AB3;
  --text-dim: #5A6A85;

  --accent: #49C7FF;       /* electric cyan-blue, nods to CR flag blue */
  --accent-soft: rgba(73,199,255,0.12);
  --accent-2: #FFB454;     /* warm amber, "circuit" energy */
  --accent-2-soft: rgba(255,180,84,0.12);
  --accent-cr: #E7404F;    /* CR flag red, used sparingly */

  --ok: #3ED598;

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

  --wrap: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
}

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

html{ scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

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

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

h1,h2,h3,h4{
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.01em;
}

::selection{ background: var(--accent); color: #06101C; }

:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Background grid texture */
.bg-grid{
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 0%, transparent 75%);
  opacity: 0.6;
}

.prompt{ color: var(--accent); font-family: var(--font-mono); }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(9,13,22,0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.header-row{
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.brand{
  display: flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.brand-mark{ color: var(--text); }
.brand-cursor{
  width: 9px; height: 18px;
  background: var(--accent);
  display: inline-block;
  margin-left: 2px;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink{ 50%{ opacity: 0; } }

.main-nav{
  display: flex;
  gap: 32px;
  font-size: 14px;
  color: var(--text-muted);
}
.main-nav a{ transition: color .15s ease; position: relative; }
.main-nav a:hover{ color: var(--text); }

.header-actions{ display: flex; align-items: center; gap: 16px; }

.cr-chip{
  display: flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
}
.cr-flag{ width: 16px; height: auto; border-radius: 2px; }

.lang-toggle{
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
}
.lang-opt{ padding: 2px 4px; border-radius: 4px; }
.lang-opt.is-active{ color: var(--bg); background: var(--accent); }
.lang-div{ opacity: 0.4; }

.nav-burger{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px; height: 32px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-burger span{ width: 100%; height: 2px; background: var(--text); border-radius: 2px; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position: relative;
  padding: 76px 0 40px;
  overflow: hidden;
}

.hero-grid{
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.eyebrow, .section-eyebrow{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 18px;
  text-transform: lowercase;
}
.section-eyebrow.small{ margin-bottom: 10px; }

.hero-title{
  font-size: clamp(40px, 5.4vw, 64px);
  line-height: 1.03;
  margin-bottom: 14px;
}

.hero-role{
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 17px;
  margin: 0 0 20px;
}

.hero-sub{
  max-width: 46ch;
  color: var(--text-muted);
  font-size: 16.5px;
  margin: 0 0 30px;
}

.hero-cta{ display: flex; gap: 14px; margin-bottom: 40px; flex-wrap: wrap; }

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 24px;
  border-radius: var(--radius-sm);
  font-size: 14.5px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{ transform: translateY(-1px); }
.btn-primary{
  background: var(--accent);
  color: #06101C;
}
.btn-primary:hover{ background: #6ad3ff; }
.btn-ghost{
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--accent); color: var(--accent); }
.btn-block{ width: 100%; }

.console{
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 18px 20px;
  max-width: 480px;
  font-family: var(--font-mono);
  font-size: 12.5px;
}
.console-row{
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--line);
}
.console-row:last-child{ border-bottom: none; }
.console-key{ color: var(--text-dim); }
.console-val{ color: var(--text-muted); text-align: right; }
.console-val.ok{ color: var(--ok); display: flex; align-items: center; gap: 7px; }
.dot{
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(62,213,152,0.6);
  animation: pulseDot 2s infinite;
}
@keyframes pulseDot{
  0%{ box-shadow: 0 0 0 0 rgba(62,213,152,0.5); }
  70%{ box-shadow: 0 0 0 7px rgba(62,213,152,0); }
  100%{ box-shadow: 0 0 0 0 rgba(62,213,152,0); }
}

/* Hero architecture diagram — signature element */
.hero-visual{ position: relative; }
.arch-svg{ width: 100%; height: auto; }

.arch-path{ stroke: var(--line-strong); stroke-dasharray: 6 5; }
.p1{ animation: dash 2s linear infinite; }
.p2{ animation: dash 2s linear infinite .1s; }
.p3{ animation: dash 2s linear infinite .2s; }
.p4{ animation: dash 2s linear infinite .3s; }
.p5{ animation: dash 2s linear infinite .4s; }
.p6{ animation: dash 2s linear infinite .5s; }
@keyframes dash{ to{ stroke-dashoffset: -22; } }

.hub-ring{ fill: none; stroke: var(--accent); stroke-width: 1.5; opacity: 0.5; }
.hub-fill{ fill: var(--bg-elev-2); stroke: var(--accent); stroke-width: 1.5; }
.hub-text{
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  fill: var(--accent);
}

.node rect{
  fill: var(--bg-elev);
  stroke: var(--line-strong);
  stroke-width: 1.2;
}
.node text{
  fill: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.scroll-cue{
  display: flex;
  justify-content: center;
  margin-top: 30px;
}
.scroll-cue span{
  width: 1px; height: 34px;
  background: linear-gradient(var(--accent), transparent);
  display: block;
  animation: scrollcue 1.8s ease-in-out infinite;
}
@keyframes scrollcue{
  0%,100%{ opacity: 0.2; transform: translateY(0); }
  50%{ opacity: 1; transform: translateY(6px); }
}

/* ==========================================================================
   SECTIONS (shared)
   ========================================================================== */
.section{ padding: 96px 0; }
.section-alt{ background: linear-gradient(180deg, transparent, var(--bg-elev) 4%, var(--bg-elev) 96%, transparent); }

.section-title{
  font-size: clamp(28px, 3.4vw, 38px);
  margin-bottom: 18px;
}
.section-lead{
  color: var(--text-muted);
  max-width: 60ch;
  font-size: 16px;
  margin: 0 0 44px;
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid{
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 56px;
  align-items: start;
}

.photo-frame{
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  position: relative;
}
.photo-frame::after{
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(9,13,22,0.5));
  pointer-events: none;
}
.photo-frame img{ width: 100%; aspect-ratio: 4/5; object-fit: cover; }

.about-text{
  color: var(--text-muted);
  margin: 0 0 16px;
  max-width: 62ch;
}

.skills{ margin-top: 36px; display: grid; gap: 22px; }
.skill-group h3{
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.tag-row{ display: flex; flex-wrap: wrap; gap: 8px; }
.tag{
  font-size: 13px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--text-muted);
  background: var(--bg-elev);
}
.tag.mono{ font-family: var(--font-mono); font-size: 12px; }

/* ==========================================================================
   EXPERIENCE / TIMELINE
   ========================================================================== */
.timeline{
  position: relative;
  padding-left: 28px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 56px;
  margin-top: 8px;
}

.timeline-item{ position: relative; }
.timeline-marker{
  position: absolute;
  left: -33.5px;
  top: 4px;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--accent);
}

.timeline-head{
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.timeline-head h3{ font-size: 20px; }
.timeline-date{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent-2);
  white-space: nowrap;
}
.timeline-org{
  color: var(--text-muted);
  font-size: 14.5px;
  margin: 4px 0 16px;
}
.timeline-list{
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 9px;
}
.timeline-list li{ color: var(--text-muted); font-size: 15px; }
.timeline-list li::marker{ color: var(--accent); }

.education-block{
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}
.edu-row{
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.edu-row h4{ font-size: 17px; margin-bottom: 6px; }
.edu-org{ color: var(--text-muted); font-size: 14px; margin: 0; }
.lang-badges{ display: flex; gap: 8px; }

/* ==========================================================================
   PROJECTS
   ========================================================================== */
.projects-list{ display: grid; gap: 100px; margin-top: 8px; }

.project-card{
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}
.project-card.reverse{ direction: rtl; }
.project-card.reverse > *{ direction: ltr; }

.project-shots{
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.gallery-4{ grid-template-columns: 1fr 1fr; }
.gallery-4 .frame-wide{ grid-column: 1 / -1; }

.device-frame{
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--bg-elev);
  cursor: zoom-in;
  transition: border-color .15s ease, transform .15s ease;
}
.device-frame:hover{ border-color: var(--accent); transform: translateY(-2px); }
.device-frame img{ width: 100%; height: 100%; object-fit: cover; display: block; }
.frame-wide{ aspect-ratio: 16/10; }
.frame-modal{ aspect-ratio: 4/3; }

.project-tag-label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.project-copy h3{ font-size: 26px; margin: 10px 0 14px; }
.project-copy > p{ color: var(--text-muted); margin: 0 0 20px; max-width: 52ch; }

.metric-chip{
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: var(--accent-2-soft);
  border: 1px solid rgba(255,180,84,0.3);
  margin-bottom: 22px;
}
.metric-num{
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--accent-2);
  font-size: 16px;
}
.metric-label{ font-size: 12px; color: var(--text-muted); }

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
}

.contact-links{ display: grid; gap: 2px; margin-top: 32px; }
.contact-link{
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 4px;
  border-bottom: 1px solid var(--line);
  transition: padding-left .15s ease, color .15s ease;
}
.contact-link:not(.no-hover):hover{ padding-left: 10px; color: var(--accent); }
.contact-link-label{
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-link-value{ font-size: 14.5px; }

.contact-form{
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  display: grid;
  gap: 18px;
  align-content: start;
}
.form-row{ display: grid; gap: 8px; }
.form-row label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.form-row input, .form-row textarea{
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14.5px;
  resize: vertical;
}
.form-row input:focus, .form-row textarea:focus{
  outline: none;
  border-color: var(--accent);
}
.form-status{
  min-height: 18px;
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin: 0;
}
.form-status.is-error{ color: var(--accent-cr); }
.form-status.is-ok{ color: var(--ok); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{ border-top: 1px solid var(--line); padding: 28px 0; }
.footer-row{
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ==========================================================================
   LIGHTBOX
   ========================================================================== */
.lightbox{
  position: fixed; inset: 0;
  background: rgba(6,10,18,0.92);
  display: flex; align-items: center; justify-content: center;
  padding: 40px;
  z-index: 100;
  opacity: 0; pointer-events: none;
  transition: opacity .2s ease;
}
.lightbox.is-open{ opacity: 1; pointer-events: auto; }
.lightbox img{
  max-width: min(1100px, 100%);
  max-height: 88vh;
  border-radius: 8px;
  border: 1px solid var(--line-strong);
}
.lightbox-close{
  position: absolute;
  top: 26px; right: 30px;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--text);
  width: 40px; height: 40px;
  border-radius: 50%;
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-visual{ order: -1; max-width: 420px; margin: 0 auto; }
  .about-grid{ grid-template-columns: 1fr; }
  .photo-frame{ max-width: 220px; }
  .project-card, .project-card.reverse{ grid-template-columns: 1fr; direction: ltr; }
  .contact-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .main-nav{
    position: absolute;
    top: 68px; left: 0; right: 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 8px 28px 16px;
    display: none;
  }
  .main-nav.is-open{ display: flex; }
  .main-nav a{ padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav-burger{ display: flex; }
  .cr-chip span:last-child{ display: none; }
  .gallery-4{ grid-template-columns: 1fr; }
  .edu-row{ flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px){
  .wrap{ padding: 0 20px; }
  .hero{ padding-top: 52px; }
  .section{ padding: 64px 0; }
}