/* ==========================================================================
   Design tokens
   ========================================================================== */
:root{
  --bg: #0B0D10;
  --bg-surface: #14171C;
  --bg-surface-alt: #191D24;
  --bg-raised: #1D2128;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.14);

  --text: #EDEEF0;
  --text-muted: #9AA1AC;
  --text-faint: #666D78;

  --accent: #E3A34C;
  --accent-soft: rgba(227,163,76,0.12);
  --accent-border: rgba(227,163,76,0.35);
  --accent-dim: #7A5B2E;

  --font-display: 'Space Grotesk', 'IBM Plex Sans', sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --container: 1160px;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --ease: cubic-bezier(.22,.8,.32,1);
}

*,*::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;
  overflow-x: hidden;
}

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

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

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

.skip-link{
  position:absolute; left:-999px; top:0;
  background: var(--accent); color:#151005; padding:10px 16px;
  z-index: 999; border-radius: 0 0 8px 0; font-weight:600;
}
.skip-link:focus{ left:0; }

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

/* subtle background texture — one restrained wash, not overdone */
body::before{
  content:"";
  position: fixed; inset:0;
  background:
    radial-gradient(700px 420px at 82% -6%, rgba(227,163,76,0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(227,163,76,0.05), transparent 60%);
  pointer-events:none;
  z-index:0;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1,h2,h3,h4{ font-family: var(--font-display); font-weight:600; line-height:1.15; margin:0; color:var(--text); letter-spacing: -0.01em; }

.section-title{ font-size: clamp(1.7rem, 1.2rem + 2vw, 2.5rem); margin-bottom: 14px; max-width: 720px; }
.section-title-sm{ font-size: clamp(1.3rem, 1.1rem + 1vw, 1.7rem); margin-bottom: 12px; }
.section-lead{ color: var(--text-muted); max-width: 560px; font-size: 1.05rem; margin-bottom: 40px; }

.body-text{ color: var(--text-muted); max-width: 60ch; margin: 0 0 16px; }

.eyebrow{
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin: 0 0 22px;
}
.eyebrow-plain{ color: var(--accent); }

.accent-text{ color: var(--accent); }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 14px 26px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  cursor:pointer;
  border: 1px solid transparent;
  transition: transform .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
  white-space: nowrap;
}
.btn:hover{ transform: translateY(-2px); }
.btn:active{ transform: translateY(0); }

.btn-primary{
  background: var(--accent);
  color: #171003;
  box-shadow: 0 8px 24px -8px rgba(227,163,76,0.55);
}
.btn-primary:hover{ background:#eeb262; box-shadow: 0 10px 28px -6px rgba(227,163,76,0.6); }

.btn-outline{
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-outline:hover{ border-color: var(--accent); color: var(--accent); }

.btn-ghost{
  background: var(--bg-raised);
  border-color: var(--border);
  color: var(--text-muted);
}
.btn-ghost:hover{ color: var(--text); border-color: var(--border-strong); }

.btn-small{ padding: 10px 18px; font-size: 0.88rem; }

/* ==========================================================================
   Nav
   ========================================================================== */
.nav{
  position: fixed; top:0; left:0; right:0; z-index: 100;
  padding: 22px 0;
  transition: padding .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease), backdrop-filter .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled{
  padding: 12px 0;
  background: rgba(11,13,16,0.78);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav-inner{
  display:flex; align-items:center; justify-content: space-between; gap: 24px;
}
.nav-logo{
  font-family: var(--font-display); font-weight:700; font-size: 1.35rem; color: var(--text);
  flex-shrink:0;
}
.nav-logo .dot{ color: var(--accent); }

.nav-links{ display:flex; gap: 30px; margin: 0 auto; }
.nav-links a{
  font-size: 0.95rem; color: var(--text-muted);
  position: relative; padding: 4px 0;
  transition: color .2s;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:0; bottom:-4px; height:1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform .3s var(--ease);
}
.nav-links a:hover{ color: var(--text); }
.nav-links a:hover::after{ transform: scaleX(1); }

.nav-cta{ flex-shrink:0; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:none; cursor:pointer; padding:0;
}
.nav-toggle span{
  display:block; width:100%; height:2px; background: var(--text);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-toggle.open span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2){ opacity:0; }
.nav-toggle.open span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.mobile-menu{
  display:none; flex-direction:column;
  max-height:0; overflow:hidden;
  background: rgba(11,13,16,0.98);
  border-bottom: 1px solid var(--border);
  transition: max-height .4s var(--ease);
}
.mobile-menu a{
  padding: 16px 28px; color: var(--text-muted); border-top: 1px solid var(--border); font-size:1.05rem;
}
.mobile-menu.open{ max-height: 420px; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero{
  position: relative; z-index:1;
  padding: 168px 0 100px;
}
.hero-grid{
  display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items:center;
}
.hero-title{
  font-size: clamp(2.4rem, 1.6rem + 3.4vw, 4rem);
  margin-bottom: 24px;
}
.hero-lead{
  color: var(--text-muted); font-size: 1.15rem; max-width: 46ch; margin: 0 0 34px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom: 22px; }

.hero-cv{
  display:inline-flex; align-items:center; gap:6px;
  color: var(--text-muted); font-size: 0.95rem; font-weight:500;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 2px;
  transition: color .2s, border-color .2s;
}
.hero-cv:hover{ color: var(--accent); border-color: var(--accent); }

.hero-social{ display:flex; gap:14px; margin-top: 34px; }
.hero-social a{
  width:42px; height:42px; display:flex; align-items:center; justify-content:center;
  border: 1px solid var(--border); border-radius: 50%;
  color: var(--text-muted);
  transition: color .25s, border-color .25s, transform .25s var(--ease);
}
.hero-social a:hover{ color: var(--accent); border-color: var(--accent-border); transform: translateY(-3px); }

.hero-visual{
  display:flex; align-items:flex-end; justify-content:center;
  position:relative;
}
.hero-photo-wrap{
  position:relative;
  width: min(440px, 88vw);
  display:flex; justify-content:center;
}

/* soft grounded glow behind the figure — the one bold moment in the hero */
.hero-glow{ position:absolute; border-radius:50%; filter: blur(60px); pointer-events:none; z-index:0; }
.hero-glow-1{
  width:92%; height:70%; top:4%; left:50%; transform:translateX(-50%);
  background: radial-gradient(circle, rgba(227,163,76,0.30), transparent 70%);
}
.hero-glow-2{
  width:60%; height:34%; bottom:2%; left:50%; transform:translateX(-50%);
  background: radial-gradient(ellipse, rgba(227,163,76,0.20), transparent 72%);
}

.hero-cutout{
  position:relative; z-index:1;
  width:100%; height:auto;
  object-fit: contain;
  filter: drop-shadow(0 26px 40px rgba(0,0,0,0.5));
}

.badge{
  position:absolute; z-index:2;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: rgba(20,23,28,0.92);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-strong);
  padding: 7px 13px;
  border-radius: 100px;
  color: var(--text);
  box-shadow: 0 8px 20px -8px rgba(0,0,0,0.5);
  animation: float 6s ease-in-out infinite;
}
.badge-1{ top: 6%; left: -6%; animation-delay: 0s; }
.badge-2{ top: 32%; right: -10%; animation-delay: .6s; }
.badge-3{ top: 58%; left: -12%; animation-delay: 1.2s; }
.badge-4{ bottom: 10%; right: -6%; animation-delay: 1.8s; }
.badge-5{ top: -2%; right: 14%; animation-delay: 2.4s; }

@keyframes float{
  0%,100%{ transform: translateY(0); }
  50%{ transform: translateY(-9px); }
}

/* ==========================================================================
   Sections (generic)
   ========================================================================== */
.section{ position:relative; z-index:1; padding: 110px 0; }
.section-alt{ background: var(--bg-surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }

[data-reveal]{
  opacity:0; transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
[data-reveal].in-view{ opacity:1; transform:none; }

/* ==========================================================================
   About
   ========================================================================== */
.about-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items:start; }
.about-meta{ display:flex; gap: 40px; margin-top: 30px; }
.about-meta > div{ display:flex; flex-direction:column; gap:4px; }
.meta-label{ font-family: var(--font-mono); font-size:0.78rem; color: var(--accent); }

.about-cards{ display:grid; grid-template-columns: 1fr 1fr; gap:18px; }
.info-card{
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color .3s, transform .3s var(--ease), background .3s;
}
.info-card:hover{ border-color: var(--accent-border); transform: translateY(-4px); background: var(--bg-raised); }
.info-card h3{ font-size: 1.05rem; margin: 14px 0 8px; }
.info-card p{ color: var(--text-muted); font-size: 0.92rem; margin:0; }

.info-icon{
  width:38px; height:38px; border-radius:10px;
  background: var(--accent-soft); color: var(--accent);
  display:flex; align-items:center; justify-content:center;
}
.info-icon svg{ width:19px; height:19px; }

/* ==========================================================================
   Skills
   ========================================================================== */
.skills-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap: 26px 34px; }
.skill-group h3{
  display:flex; align-items:center; gap:10px;
  font-size: 1.02rem; font-weight:600; margin-bottom: 16px; color: var(--text);
}
.skill-icon{ color: var(--accent); display:flex; }
.skill-icon svg{ width:17px; height:17px; }

.chip-row{ display:flex; flex-wrap:wrap; gap: 9px; }
.chip{
  font-size: 0.86rem;
  padding: 8px 15px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-muted);
  transition: border-color .25s, color .25s, background .25s;
}
.chip:hover{ border-color: var(--accent-border); color: var(--text); background: var(--accent-soft); }
.chip-sm{ font-size: 0.8rem; padding: 6px 13px; }

/* ==========================================================================
   Timeline / Experience
   ========================================================================== */
.timeline{ position:relative; max-width: 820px; }
.timeline-item{ display:grid; grid-template-columns: 56px 1fr; gap: 26px; }
.timeline-marker{
  font-family: var(--font-mono);
  width:56px; height:56px; border-radius:50%;
  border: 1px solid var(--accent-border);
  background: var(--accent-soft); color: var(--accent);
  display:flex; align-items:center; justify-content:center;
  font-size: 0.95rem; font-weight:600;
}
.timeline-content{
  background: var(--bg-surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 30px 32px;
}
.timeline-head{ display:flex; flex-wrap:wrap; justify-content:space-between; gap:10px 20px; align-items:baseline; margin-bottom:4px; }
.timeline-head h3{ font-size: 1.2rem; }
.timeline-date{ font-family: var(--font-mono); font-size: 0.83rem; color: var(--accent); white-space:nowrap; }
.timeline-org{ color: var(--text-muted); font-weight:500; margin: 0 0 14px; }

/* ==========================================================================
   Projects
   ========================================================================== */
.projects-list{ display:flex; flex-direction:column; gap: 90px; margin-top: 20px; }
.project-card{
  display:grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items:center;
}
.project-card.reverse .project-visual{ order:2; }
.project-card.reverse .project-info{ order:1; }

.project-tag{ font-family: var(--font-mono); font-size:0.8rem; color: var(--accent); display:block; margin-bottom:10px; }
.project-info h3{ font-size: clamp(1.4rem, 1.2rem + 1vw, 1.85rem); margin-bottom: 14px; }
.project-info > p{ color: var(--text-muted); margin: 0 0 18px; max-width: 48ch; }

.project-features{
  list-style:none; margin: 0 0 20px; padding:0;
  display:grid; grid-template-columns: 1fr 1fr; gap: 8px 20px;
}
.project-features li{
  color: var(--text-muted); font-size: 0.88rem; position:relative; padding-left: 16px;
}
.project-features li::before{
  content:""; position:absolute; left:0; top:9px; width:5px; height:5px; border-radius:50%;
  background: var(--accent);
}
.project-actions{ display:flex; gap: 12px; margin-top: 22px; flex-wrap:wrap; }

/* project visual mockups — abstract, not stock imagery */
.project-visual{ display:flex; justify-content:center; }
.mock-window{
  width:100%; max-width: 440px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,0.7);
  transition: transform .4s var(--ease);
}
.project-card:hover .mock-window{ transform: translateY(-6px); }
.mock-bar{
  display:flex; gap:6px; padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-raised);
}
.mock-bar span{ width:9px; height:9px; border-radius:50%; background: var(--border-strong); }
.mock-body{ padding: 22px; min-height: 240px; }

.mock-admin .mock-body{ display:flex; gap:16px; }
.mock-sidebar{ width: 68px; border-radius:10px; background: var(--bg-raised); flex-shrink:0; }
.mock-main{ flex:1; display:flex; flex-direction:column; gap:14px; }
.mock-stat-row{ display:flex; gap:10px; }
.mock-stat{ flex:1; height:44px; border-radius:8px; background: var(--accent-soft); border:1px solid var(--accent-border); }
.mock-table{ flex:1; display:flex; flex-direction:column; gap:8px; }
.mock-table div{ height:24px; border-radius:6px; background: var(--bg-raised); }
.mock-table div:nth-child(1){ width:100%; }
.mock-table div:nth-child(2){ width:88%; }
.mock-table div:nth-child(3){ width:94%; }
.mock-table div:nth-child(4){ width:70%; }

.mock-phone{ max-width: 300px; }
.mock-phone-body{ display:flex; flex-direction:column; gap:14px; min-height:280px; }
.mock-qr{
  width:100px; height:100px; border-radius:12px; align-self:center;
  background:
    repeating-linear-gradient(90deg, var(--bg-raised) 0 8px, transparent 8px 16px),
    repeating-linear-gradient(0deg, var(--bg-raised) 0 8px, transparent 8px 16px);
  border: 1px solid var(--accent-border);
}
.mock-line{ height:12px; border-radius:6px; background: var(--bg-raised); width: 100%; }
.mock-line.short{ width: 55%; }
.mock-map{ flex:1; border-radius:10px; background: linear-gradient(135deg, var(--accent-soft), var(--bg-raised)); border:1px solid var(--accent-border); min-height:90px; }

.mock-ai .mock-body{ min-height:280px; }
.mock-ai-body{ display:flex; flex-direction:column; gap:18px; }
.mock-scan{ position:relative; height:150px; border-radius:12px; background: var(--bg-raised); overflow:hidden; }
.mock-scan-frame{ position:absolute; inset:14px; border:2px dashed var(--accent-border); border-radius:8px; }
.mock-scan-line{
  position:absolute; left:14px; right:14px; height:2px; background: var(--accent);
  box-shadow: 0 0 12px 1px var(--accent);
  animation: scan 2.6s ease-in-out infinite;
}
@keyframes scan{ 0%,100%{ top:16px; } 50%{ top: calc(100% - 18px); } }
.mock-result{ display:flex; flex-direction:column; gap:10px; }

.mock-ux .mock-phone-body{ gap:12px; }
.mock-ux-card{ height:70px; border-radius:12px; background: linear-gradient(135deg, var(--accent-soft), var(--bg-raised)); border:1px solid var(--accent-border); }
.mock-ux-row{ display:flex; gap:8px; }
.mock-ux-row div{ flex:1; height:46px; border-radius:8px; background: var(--bg-raised); }

/* ==========================================================================
   Education
   ========================================================================== */
.edu-card{
  display:flex; gap: 24px; align-items:flex-start;
  background: var(--bg-surface); border:1px solid var(--border); border-radius: var(--radius);
  padding: 32px; max-width: 780px;
}
.edu-marker{
  width:52px; height:52px; border-radius:14px; flex-shrink:0;
  background: var(--accent-soft); border:1px solid var(--accent-border);
  display:flex; align-items:center; justify-content:center; font-size:1.4rem;
}
.edu-card h3{ font-size:1.15rem; margin-bottom:6px; }

/* ==========================================================================
   Research
   ========================================================================== */
.research-section{ background: var(--bg-surface); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }
.research-grid{ display:grid; grid-template-columns: 1.05fr 0.95fr; gap: 60px; align-items:start; }
.research-arch{ display:flex; flex-direction:column; gap:0; }
.arch-step{
  display:flex; gap:18px; padding: 18px 0;
  border-top: 1px solid var(--border);
}
.arch-step:last-child{ border-bottom: 1px solid var(--border); }
.arch-num{
  font-family: var(--font-mono); color: var(--accent); font-size:0.95rem;
  width:28px; flex-shrink:0;
}
.arch-step h4{ font-size:1rem; margin-bottom:4px; }
.arch-step p{ color: var(--text-muted); font-size:0.9rem; margin:0; max-width: 40ch; }

/* ==========================================================================
   Services
   ========================================================================== */
.services-grid{ display:grid; grid-template-columns: repeat(3, 1fr); gap:18px; }
.service-card{
  background: var(--bg); border:1px solid var(--border); border-radius: var(--radius);
  padding: 26px 22px;
  transition: border-color .3s, transform .3s var(--ease);
}
.service-card:hover{ border-color: var(--accent-border); transform: translateY(-4px); }
.service-card h3{ font-size:1.02rem; margin: 14px 0 8px; }
.service-card p{ color: var(--text-muted); font-size:0.9rem; margin:0; }

/* ==========================================================================
   Beyond the code
   ========================================================================== */
.beyond-section{ padding: 70px 0; }
.beyond-grid{ text-align:center; max-width: 620px; margin:0 auto; }
.beyond-text{ margin: 0 auto 26px; }
.beyond-icons{ display:flex; justify-content:center; gap: 26px; }
.beyond-icons span{
  width:44px; height:44px; border-radius:50%;
  border:1px solid var(--border); color: var(--text-muted);
  display:flex; align-items:center; justify-content:center;
  transition: color .25s, border-color .25s;
}
.beyond-icons span:hover{ color: var(--accent); border-color: var(--accent-border); }
.beyond-icons svg{ width:18px; height:18px; }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-section{ padding-bottom: 130px; }
.contact-head{ max-width: 640px; margin-bottom: 50px; }
.contact-form{
  max-width: 680px;
  background: var(--bg-surface); border:1px solid var(--border); border-radius: var(--radius-lg);
  padding: 40px;
}
.form-row{ display:grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field{ display:flex; flex-direction:column; gap:8px; margin-bottom: 20px; }
.field label{ font-size: 0.9rem; color: var(--text-muted); }
.field input, .field textarea{
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.98rem;
  resize: vertical;
  transition: border-color .2s;
}
.field input:focus, .field textarea:focus{ outline:none; border-color: var(--accent); }
.field.error input, .field.error textarea{ border-color:#d97070; }
.field-error{ font-size: 0.8rem; color:#e08787; min-height: 1em; }
.form-submit{ width:100%; margin-top: 6px; }
.form-note{ margin: 14px 0 0; font-size: 0.9rem; color: var(--accent); min-height: 1.2em; }

/* ==========================================================================
   Footer
   ========================================================================== */
.footer{ position:relative; z-index:1; border-top: 1px solid var(--border); padding-top: 46px; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; gap:24px; padding-bottom: 30px; }
.footer-role{ color: var(--text-muted); font-size: 0.9rem; margin: 6px 0 0; }
.footer-social{ display:flex; gap: 16px; }
.footer-social a{ color: var(--text-muted); transition: color .2s; }
.footer-social a:hover{ color: var(--accent); }
.back-to-top{
  width:40px; height:40px; border-radius:50%;
  background: var(--bg-surface); border:1px solid var(--border); color: var(--text-muted);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
  transition: color .2s, border-color .2s, transform .3s var(--ease);
}
.back-to-top:hover{ color: var(--accent); border-color: var(--accent-border); transform: translateY(-3px); }
.footer-bottom{
  border-top: 1px solid var(--border); padding: 20px 28px 28px;
  color: var(--text-faint); font-size: 0.85rem;
}

/* ==========================================================================
   Modal
   ========================================================================== */
.modal-overlay{
  position: fixed; inset:0; z-index: 200;
  background: rgba(6,7,9,0.72);
  backdrop-filter: blur(6px);
  display:flex; align-items:center; justify-content:center;
  padding: 24px;
  opacity:0; pointer-events:none;
  transition: opacity .3s var(--ease);
}
.modal-overlay.open{ opacity:1; pointer-events:auto; }
.modal{
  background: var(--bg-surface); border:1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  max-width: 640px; width:100%;
  max-height: 84vh; overflow-y:auto;
  padding: 44px;
  position:relative;
  transform: translateY(16px) scale(.98); opacity:0;
  transition: transform .35s var(--ease), opacity .35s var(--ease);
}
.modal-overlay.open .modal{ transform:none; opacity:1; }
.modal-close{
  position:absolute; top: 20px; right:20px;
  width:36px; height:36px; border-radius:50%;
  background: var(--bg-raised); border:1px solid var(--border); color: var(--text-muted);
  display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.modal-close:hover{ color: var(--text); }
.modal h3{ font-size: 1.5rem; margin-bottom: 6px; padding-right: 30px; }
.modal .project-tag{ margin-bottom: 16px; }
.modal-block{ margin-bottom: 22px; }
.modal-block h4{ font-size: 0.85rem; color: var(--accent); font-family: var(--font-mono); margin-bottom: 8px; }
.modal-block p{ color: var(--text-muted); margin:0; }
.modal-block ul{ margin:0; padding-left: 18px; color: var(--text-muted); }
.modal-block ul li{ margin-bottom: 4px; }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1024px){
  .container{ padding: 0 24px; }
  .about-grid{ grid-template-columns: 1fr; gap: 46px; }
  .research-grid{ grid-template-columns: 1fr; gap:40px; }
  .skills-grid{ grid-template-columns: 1fr 1fr; }
  .services-grid{ grid-template-columns: 1fr 1fr; }
  .project-card, .project-card.reverse{ grid-template-columns: 1fr; }
  .project-card .project-visual, .project-card.reverse .project-visual{ order: 1; }
  .project-card .project-info, .project-card.reverse .project-info{ order: 2; }
  .project-visual{ margin-bottom: 8px; }
}

@media (max-width: 860px){
  .nav-links, .nav-cta{ display:none; }
  .nav-toggle{ display:flex; }
  .mobile-menu{ display:flex; }
  .hero{ padding: 130px 0 70px; }
  .hero-grid{ grid-template-columns: 1fr; gap: 56px; }
  .hero-visual{ order:-1; }
  .hero-photo-wrap{ width: min(300px, 64vw); }
  .hero-actions .btn{ flex:1 1 auto; }
}

@media (max-width: 640px){
  .container{ padding: 0 20px; }
  .section{ padding: 76px 0; }
  .hero-title{ font-size: clamp(2.1rem, 1.6rem + 4vw, 2.8rem); }
  .about-cards{ grid-template-columns: 1fr; }
  .skills-grid{ grid-template-columns: 1fr; }
  .services-grid{ grid-template-columns: 1fr; }
  .form-row{ grid-template-columns: 1fr; }
  .contact-form{ padding: 26px; }
  .project-features{ grid-template-columns: 1fr; }
  .footer-inner{ flex-wrap:wrap; }
  .badge{ font-size: 0.68rem; padding: 5px 10px; }
  .timeline-item{ grid-template-columns: 44px 1fr; gap: 16px; }
  .timeline-marker{ width:44px; height:44px; font-size:0.8rem; }
  .timeline-content{ padding: 22px 20px; }
  .edu-card{ flex-direction:column; padding: 26px; }
}

@media (max-width: 400px){
  .hero-actions{ flex-direction:column; align-items:stretch; }
  .hero-social{ gap:10px; }
}