/* ============================================================
   sinaga.sbs — design system
   Fonts: Space Grotesk (display) · Inter (body) · JetBrains Mono
   ============================================================ */

/* ==================  DESIGN TOKENS  ================== */
:root {
  /* Backgrounds */
  --bg-void:      #07080F;
  --bg-surface:   #0F1119;
  --bg-surface-2: #151728;
  --bg-surface-3: #1C2038;

  /* Borders */
  --border-subtle: rgba(255,255,255,0.07);
  --border-soft:   rgba(255,255,255,0.13);
  --border-accent: rgba(91,127,255,0.30);

  /* Text */
  --text-primary: #EDEEF7;
  --text-muted:   #9296B0;
  --text-dim:     #5B5E78;

  /* Accent palette */
  --accent-blue:   #5B7FFF;
  --accent-violet: #9B5BFF;
  --accent-cyan:   #5BC8FF;
  --accent-green:  #57E5A0;

  /* Gradients */
  --gradient-main:      linear-gradient(135deg,#5B7FFF 0%,#9B5BFF 100%);
  --gradient-soft:      linear-gradient(135deg,rgba(91,127,255,0.14),rgba(155,91,255,0.14));
  --gradient-text:      linear-gradient(135deg,#7B9FFF 0%,#C57BFF 100%);
  --gradient-text-hero: linear-gradient(125deg,#8BAAFF 0%,#CA80FF 60%,#FF80D4 100%);

  /* Glow */
  --glow:       rgba(123,97,255,0.40);
  --glow-blue:  rgba(91,127,255,0.28);

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

  /* Layout */
  --container:  1100px;
  --pad:        32px;
  --nav-h:      64px;

  /* Radii */
  --r-sm:   8px;
  --r-md:  14px;
  --r-lg:  20px;
  --r-pill: 9999px;

  /* Shadows */
  --shadow-card: 0 4px 28px -8px rgba(0,0,0,0.45);
  --shadow-glow: 0 18px 48px -14px var(--glow);
}

/* ==================  RESET  ================== */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { -webkit-text-size-adjust:100%; text-size-adjust:100%; scroll-behavior:smooth; }
img, svg { display:block; max-width:100%; }
a { color:inherit; text-decoration:none; -webkit-tap-highlight-color:transparent; }
button { cursor:pointer; font:inherit; border:none; background:none; }
ul, ol { list-style:none; }
::selection { background:var(--accent-violet); color:#fff; }
:focus-visible { outline:2px solid var(--accent-blue); outline-offset:3px; border-radius:6px; }

/* ==================  BODY  ================== */
body {
  background: var(--bg-void);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
  padding-left:  env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Ambient grid + radial glows — fixed so it doesn't repaint on scroll */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(ellipse at 12% 0%,  rgba(91,127,255,0.10), transparent 52%),
    radial-gradient(ellipse at 88% 8%,  rgba(155,91,255,0.08), transparent 50%),
    linear-gradient(to right,  rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ==================  LAYOUT  ================== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
  position: relative;
  z-index: 1;
}

/* ==================  NAVIGATION  ================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(7,8,15,0.78);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  gap: 16px;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 13px;
  border-radius: var(--r-sm);
  transition: color .18s ease, background .18s ease;
}

.nav-links a:hover { color: var(--text-primary); background: var(--bg-surface); }
.nav-links a.active { color: var(--accent-blue); background: rgba(91,127,255,0.08); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-socials {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-socials a {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  transition: border-color .18s, color .18s, background .18s;
}

.nav-socials a:hover {
  border-color: var(--border-accent);
  color: var(--accent-blue);
  background: var(--gradient-soft);
}

.nav-socials svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-nav {
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 20px;
  border-radius: var(--r-pill);
  background: var(--gradient-main);
  color: #fff;
  white-space: nowrap;
  transition: opacity .2s, box-shadow .2s, transform .2s;
}

.btn-nav:hover {
  opacity: .88;
  box-shadow: 0 8px 28px -8px var(--glow);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 38px; height: 38px;
  align-items: center; justify-content: center;
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.nav-burger span {
  display: block;
  width: 16px; height: 1.5px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: transform .22s ease, opacity .22s ease;
}

.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile drawer */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: rgba(7,8,15,0.97);
  backdrop-filter: blur(22px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 18px var(--pad) 28px;
  z-index: 190;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav.open { display: flex; }

.mobile-nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 13px 16px;
  border-radius: 10px;
  transition: color .18s, background .18s;
}

.mobile-nav a:hover { color: var(--text-primary); background: var(--bg-surface); }
.mobile-nav a.active { color: var(--accent-blue); background: rgba(91,127,255,0.08); }

.mobile-nav-divider { height: 1px; background: var(--border-subtle); margin: 10px 0; }

.mobile-nav-socials {
  display: flex;
  gap: 8px;
  padding: 4px 16px;
  flex-wrap: wrap;
}

.mobile-nav-socials a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--accent-blue);
  padding: 0;
  background: none;
  border-radius: 0;
}

.mobile-nav-socials a:hover { color: var(--accent-violet); background: none; }
.mobile-nav-socials svg { width: 15px; height: 15px; flex-shrink: 0; }

/* ==================  BUTTONS  ================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--r-pill);
  background: var(--gradient-main);
  color: #fff;
  border: none;
  transition: opacity .2s, box-shadow .2s, transform .2s;
  white-space: nowrap;
  cursor: pointer;
}

.btn-primary:hover {
  opacity: .88;
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn-primary:active { transform: translateY(0); }
.btn-primary svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14.5px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-soft);
  transition: border-color .2s, background .2s, transform .2s;
  white-space: nowrap;
  cursor: pointer;
}

.btn-secondary:hover {
  border-color: var(--border-accent);
  background: rgba(91,127,255,0.06);
  transform: translateY(-2px);
}

.btn-secondary:active { transform: translateY(0); }
.btn-secondary svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ==================  EYEBROW  ================== */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--accent-blue);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gradient-main);
  box-shadow: 0 0 10px var(--glow);
  flex-shrink: 0;
}

/* Section heading */
.section-header { margin-bottom: 48px; }

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* ==================  HERO  ================== */
.hero {
  padding: 96px 0 80px;
  position: relative;
  overflow: hidden;
}

/* Decorative radial glows specific to hero */
.hero-glow-a,
.hero-glow-b {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(1px);
}

.hero-glow-a {
  top: -120px; right: -180px;
  width: 640px; height: 640px;
  background: radial-gradient(circle, rgba(155,91,255,0.09) 0%, transparent 65%);
}

.hero-glow-b {
  bottom: -80px; left: -80px;
  width: 440px; height: 440px;
  background: radial-gradient(circle, rgba(91,127,255,0.08) 0%, transparent 65%);
}

/* Status badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-pill);
  padding: 6px 16px 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gradient-main);
  box-shadow: 0 0 10px var(--glow);
  animation: pulse-dot 2.2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse-dot {
  0%, 100% { opacity:1; box-shadow: 0 0 10px var(--glow); }
  50%       { opacity:.6; box-shadow: 0 0 22px var(--glow); }
}

/* Name */
.hero-name {
  font-family: var(--font-display);
  font-size: clamp(52px, 10vw, 88px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.0;
  margin-bottom: 16px;
}

.grad-text {
  background: var(--gradient-text-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Role line */
.hero-role {
  font-family: var(--font-display);
  font-size: clamp(18px, 3.5vw, 28px);
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: -0.015em;
  margin-bottom: 26px;
}

/* Description */
.hero-desc {
  font-size: 16.5px;
  color: var(--text-muted);
  line-height: 1.78;
  max-width: 540px;
  margin-bottom: 40px;
}

/* CTA row */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* Stats bar */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1px;
  background: var(--border-subtle);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.hero-stat {
  background: var(--bg-surface);
  padding: 28px 32px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 7px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

/* ==================  ABOUT  ================== */
.about-section { padding: 92px 0; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.12;
  margin-bottom: 22px;
}

.about-text p {
  font-size: 15.5px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-text p + p { margin-top: 0; }

.about-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 32px;
}

/* Stacked card visual */
.card-stack { position: relative; }

.card-back {
  position: absolute;
  top: 14px; left: 14px;
  right: -14px; bottom: -14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
}

.card-main {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.card-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

/* Skill chips */
.chip-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 22px;
}

.chip {
  font-size: 12.5px;
  font-weight: 500;
  padding: 6px 13px;
  border-radius: var(--r-pill);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
  transition: border-color .18s, color .18s;
}

.chip:hover { border-color: var(--border-accent); color: var(--accent-blue); }

.chip.hi {
  background: var(--gradient-soft);
  border-color: var(--border-accent);
  color: var(--accent-blue);
}

.card-divider { height:1px; background:var(--border-subtle); margin:20px 0; }

.card-links { display:flex; gap:16px; flex-wrap:wrap; }

.card-link {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .18s;
}

.card-link:hover { color: var(--accent-blue); }
.card-link svg { width:15px; height:15px; flex-shrink:0; }

/* ==================  EXPERTISE  ================== */
.expertise-section {
  padding: 92px 0;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 18px;
}

.expertise-card {
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 28px;
  position: relative;
  overflow: hidden;
  transition: border-color .18s, transform .18s, box-shadow .18s;
}

.expertise-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-soft);
  opacity: 0;
  transition: opacity .2s;
}

@media (hover:hover) and (pointer:fine) {
  .expertise-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
    box-shadow: 0 16px 40px -16px var(--glow);
  }
  .expertise-card:hover::before { opacity: 1; }
}

.expertise-card:active { transform: scale(.98); }

.exp-icon {
  width: 48px; height: 48px;
  border-radius: var(--r-sm);
  background: var(--gradient-soft);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  position: relative;
}

.exp-icon svg { width:22px; height:22px; stroke: var(--accent-blue); }

.expertise-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 10px;
  position: relative;
}

.expertise-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.72;
  position: relative;
}

/* ==================  FEATURED WORK  ================== */
.featured-section { padding: 92px 0; }

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 18px;
}

.feat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: border-color .18s, transform .18s, box-shadow .18s;
}

@media (hover:hover) and (pointer:fine) {
  .feat-card:hover {
    border-color: var(--border-accent);
    transform: translateY(-3px);
    box-shadow: 0 24px 56px -20px var(--glow);
  }
}

.feat-card:active { transform: scale(.98); }

.feat-type {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-violet);
  margin-bottom: 14px;
}

.feat-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin-bottom: 12px;
}

.feat-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 22px;
}

/* Tags */
.tag-row { display:flex; flex-wrap:wrap; gap:7px; margin-bottom:22px; }

.tag {
  font-size: 11.5px;
  font-weight: 500;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  color: var(--text-dim);
}

.feat-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 18px;
  border-top: 1px solid var(--border-subtle);
}

.feat-meta { font-family:var(--font-mono); font-size:12px; color:var(--text-dim); }

.feat-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-blue);
  transition: gap .18s;
}

.feat-link:hover { gap: 10px; }
.feat-link svg { width:14px; height:14px; flex-shrink:0; }

.feat-card.span-full { grid-column: 1 / -1; }

/* ==================  CTA SECTION  ================== */
.cta-section { padding: 80px 0 96px; }

.cta-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-lg);
  padding: 72px 52px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  top: -100px; left: 50%; transform: translateX(-50%);
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(123,97,255,0.11) 0%, transparent 65%);
  pointer-events: none;
}

.cta-box h2 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.12;
  margin-bottom: 16px;
  position: relative;
}

.cta-box p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 480px;
  margin: 0 auto 36px;
  position: relative;
}

.cta-actions {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  position: relative;
}

/* ==================  FOOTER  ================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 36px 0 max(40px, env(safe-area-inset-bottom));
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
}

.footer-brand .hl {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.footer-socials { display:flex; gap:8px; }

.footer-socials a {
  width: 34px; height: 34px;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-subtle);
  display: flex; align-items:center; justify-content:center;
  color: var(--text-dim);
  transition: color .18s, border-color .18s, background .18s;
}

.footer-socials a:hover {
  color: var(--accent-blue);
  border-color: var(--border-accent);
  background: rgba(91,127,255,0.06);
}

.footer-socials svg { width:15px; height:15px; }

/* ==================  PAGE HEADER (inner pages)  ================== */
.page-header {
  padding: 72px 0 60px;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: -60px; right: -100px;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91,127,255,0.07) 0%, transparent 65%);
  pointer-events: none;
}

.page-header h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 7.5vw, 58px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 14px;
  position: relative;
}

.page-header p {
  font-size: 16.5px;
  color: var(--text-muted);
  max-width: 520px;
  line-height: 1.75;
  position: relative;
}

/* ==================  PROJECTS GRID  ================== */
.projects-block { padding: 68px 0; }
.projects-block + .projects-block { padding-top: 0; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2,1fr);
  gap: 16px;
}

.proj-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: border-color .18s, transform .18s, box-shadow .18s;
}

@media (hover:hover) and (pointer:fine) {
  .proj-card:hover {
    border-color: rgba(123,97,255,0.4);
    transform: translateY(-2px);
    box-shadow: 0 14px 36px -14px var(--glow);
  }
}

.proj-card:active { transform: scale(.98); }

.proj-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.proj-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--gradient-soft);
  display: flex; align-items:center; justify-content:center;
  flex-shrink: 0;
}

.proj-icon svg { width:18px; height:18px; stroke:var(--accent-blue); }

.proj-ext {
  color: var(--text-dim);
  transition: color .18s;
}

.proj-ext:hover { color: var(--accent-blue); }
.proj-ext svg { width:16px; height:16px; }

.proj-card h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 9px;
}

.proj-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.72;
  flex: 1;
  margin-bottom: 20px;
}

.proj-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

/* Language dots */
.lang {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.lang::before {
  content: "";
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--accent-blue);
}

.lang.violet::before  { background: var(--accent-violet); }
.lang.cyan::before    { background: var(--accent-cyan); }
.lang.green::before   { background: var(--accent-green); }
.lang.yellow::before  { background: #F5C842; }
.lang.orange::before  { background: #FF8A3D; }

/* ==================  RESEARCH CARDS  ================== */
.research-list {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.res-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 36px;
  transition: border-color .18s;
}

@media (hover:hover) and (pointer:fine) {
  .res-card:hover { border-color: var(--border-accent); }
}

.res-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.res-period {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  background: var(--bg-surface-2);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-pill);
  padding: 4px 13px;
  white-space: nowrap;
}

.res-org {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--text-dim);
}

.res-org svg { width:13px; height:13px; flex-shrink:0; stroke:var(--text-dim); }

.res-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  margin-bottom: 14px;
}

.res-body {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.82;
  margin-bottom: 24px;
}

.res-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.res-skill {
  font-size: 11.5px;
  font-weight: 500;
  padding: 5px 13px;
  border-radius: var(--r-pill);
  background: var(--gradient-soft);
  border: 1px solid var(--border-accent);
  color: var(--accent-blue);
}

/* ==================  CONTACT PAGE  ================== */
.contact-section { padding: 68px 0 100px; }

.contact-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.contact-info > p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.78;
  margin-bottom: 32px;
}

.contact-methods { display:flex; flex-direction:column; gap:11px; }

.c-method {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  transition: border-color .18s, background .18s;
  color: inherit;
}

.c-method:hover { border-color: var(--border-accent); background: rgba(91,127,255,0.04); }

.c-method-icon {
  width: 38px; height: 38px;
  border-radius: 9px;
  background: var(--gradient-soft);
  display: flex; align-items:center; justify-content:center;
  flex-shrink: 0;
}

.c-method-icon svg { width:18px; height:18px; stroke:var(--accent-blue); }

.c-method-body { flex:1; min-width:0; }

.c-method-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  margin-bottom: 2px;
}

.c-method-value {
  font-size: 14px;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.c-method-arrow { color:var(--text-dim); flex-shrink:0; }
.c-method-arrow svg { width:14px; height:14px; }

/* ---- Form card ---- */
.form-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 40px;
}

.form-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.form-sub {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 30px;
}

.form-status {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  border-radius: var(--r-sm);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 22px;
}

.form-status.show { display:flex; }
.form-status.ok  { background:rgba(87,229,160,0.09); border:1px solid rgba(87,229,160,0.28); color:var(--accent-green); }
.form-status.err { background:rgba(255,91,91,0.09); border:1px solid rgba(255,91,91,0.28); color:#FF7070; }
.form-status svg { width:16px; height:16px; flex-shrink:0; }

.form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.form-field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.req { color:var(--accent-violet); margin-left:3px; }

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  background: var(--bg-void);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: border-color .18s, box-shadow .18s;
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color:var(--text-dim); }

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(91,127,255,0.12);
}

.form-textarea { min-height:148px; resize:vertical; line-height:1.65; }

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235B5E78' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 15px;
  padding-right: 40px;
  cursor: pointer;
  color: var(--text-primary);
}

.form-select option { background:var(--bg-surface-2); color:var(--text-primary); }

.btn-submit {
  width: 100%;
  justify-content: center;
  padding: 14px 28px;
  font-size: 15px;
  margin-top: 6px;
}

.btn-submit:disabled { opacity:.55; cursor:not-allowed; transform:none !important; }

.form-note {
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 14px;
}

/* Honeypot */
.hp-field { display:none !important; }

/* ==================  SCROLL REVEAL  ================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s cubic-bezier(.22,.68,0,1.2), transform .55s cubic-bezier(.22,.68,0,1.2);
}

.reveal.in { opacity:1; transform:none; }

.stagger > * {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .45s ease, transform .45s ease;
}

.stagger.in > *:nth-child(1) { opacity:1; transform:none; transition-delay:0ms; }
.stagger.in > *:nth-child(2) { opacity:1; transform:none; transition-delay:80ms; }
.stagger.in > *:nth-child(3) { opacity:1; transform:none; transition-delay:160ms; }
.stagger.in > *:nth-child(4) { opacity:1; transform:none; transition-delay:240ms; }
.stagger.in > *:nth-child(5) { opacity:1; transform:none; transition-delay:320ms; }
.stagger.in > *:nth-child(6) { opacity:1; transform:none; transition-delay:400ms; }

/* ==================  RESPONSIVE  ================== */
@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2,1fr); }
  .contact-grid   { grid-template-columns: 1fr; gap:40px; }
}

@media (max-width: 860px) {
  .about-grid  { grid-template-columns: 1fr; gap:44px; }
  .hero-stats  { grid-template-columns: repeat(3,1fr); }
  .featured-grid { grid-template-columns: 1fr; }
  .feat-card.span-full { grid-column: auto; }
  .projects-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --pad: 22px; }

  /* Hide desktop nav items */
  .nav-links,
  .nav-right .nav-socials,
  .nav-right .btn-nav { display: none; }

  .nav-burger { display: flex; }

  .hero   { padding: 62px 0 56px; }
  .hero-actions { margin-bottom: 48px; }

  .btn-primary,
  .btn-secondary { padding: 12px 22px; font-size: 14px; }

  .about-section,
  .expertise-section,
  .featured-section,
  .cta-section,
  .projects-block { padding: 60px 0; }

  .cta-box { padding: 48px 28px; }
  .form-card { padding: 28px 22px; }
  .res-card { padding: 26px 22px; }

  .footer-inner { flex-direction: column; align-items: flex-start; gap: 14px; }
}

@media (max-width: 540px) {
  :root { --pad: 16px; }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .hero-stat { padding: 20px 24px; }

  .expertise-grid { grid-template-columns: 1fr; }

  .card-main { padding: 24px 20px; }

  .about-text h2 { font-size: 30px; }
}

/* ==================  REDUCED MOTION  ================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal, .stagger > * { opacity:1; transform:none; }
}