/* ---------- variables ---------- */
:root {
  --bg-0: #071a1e;
  --bg-1: #0c2830;
  --bg-2: #0f323c;
  --teal: #12414c;
  --accent: #ff7a29;
  --accent-2: #ffb347;
  --text-0: #eef5f4;
  --text-1: #b7cbca;
  --text-2: #7f9c9b;
  --border: rgba(255, 255, 255, 0.09);
  --card: rgba(255, 255, 255, 0.035);
  --radius: 20px;
  --max-width: 1180px;
  --font-head: "Poppins", sans-serif;
  --font-body: "Inter", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(60% 50% at 85% -5%, rgba(255, 122, 41, 0.14), transparent 60%),
    radial-gradient(50% 40% at 10% 10%, rgba(18, 130, 140, 0.28), transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 40%, var(--bg-0) 100%);
  z-index: -2;
  pointer-events: none;
}

.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.05;
  background-image:
    linear-gradient(var(--text-1) 1px, transparent 1px),
    linear-gradient(90deg, var(--text-1) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

a { color: inherit; text-decoration: none; }
ul { padding: 0; margin: 0; list-style: none; }
img { max-width: 100%; display: block; }

h1, h2, h3 { font-family: var(--font-head); font-weight: 700; margin: 0; }

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

.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 22px 0;
  transition: background 0.3s ease, padding 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  padding: 14px 0;
  background: rgba(7, 26, 30, 0.82);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

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

.logo {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 1.5px;
  color: var(--text-0);
  white-space: nowrap;
}
.logo span { color: var(--accent); margin-left: 6px; }

.nav {
  display: flex;
  gap: 32px;
  font-size: 14.5px;
  font-weight: 500;
}
.nav a { color: var(--text-1); transition: color 0.2s ease; }
.nav a:hover { color: var(--text-0); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.social-links {
  display: flex;
  gap: 14px;
}
.social-links a {
  color: var(--text-1);
  transition: color 0.2s ease, transform 0.2s ease;
}
.social-links a:hover { color: var(--accent); transform: translateY(-2px); }

.hire-badge {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid rgba(255, 122, 41, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}
.hire-badge-text {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  animation: spin 12s linear infinite;
}
.hire-badge-arrow { display: flex; }

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-0);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s 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); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: 100px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #1a0d02;
  box-shadow: 0 8px 24px rgba(255, 122, 41, 0.28);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(255, 122, 41, 0.4); }
.btn-ghost {
  border: 1px solid var(--border);
  color: var(--text-0);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- hero ---------- */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 40px;
  padding-top: 140px;
  padding-bottom: 80px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}
.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 122, 41, 0.18);
}

.hero h1 {
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.08;
  letter-spacing: -1px;
  margin-bottom: 22px;
}

.hero-sub {
  max-width: 480px;
  color: var(--text-1);
  font-size: 16.5px;
  margin-bottom: 34px;
}

.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }

.hero-stats {
  display: flex;
  gap: 40px;
}
.hero-stats div { display: flex; flex-direction: column; gap: 4px; }
.hero-stats strong {
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--text-0);
}
.hero-stats span { font-size: 13px; color: var(--text-2); }

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.blob {
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle at 30% 30%, rgba(255, 122, 41, 0.35), transparent 70%);
  filter: blur(10px);
  border-radius: 50%;
  z-index: -1;
}

.code-card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
  transform: rotate(-2deg);
}
.code-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }
.code-card-title { margin-left: 8px; font-size: 12.5px; color: var(--text-2); }
.code-card-body {
  margin: 0;
  padding: 20px 22px;
  font-family: "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 13.2px;
  line-height: 1.75;
  color: var(--text-1);
  white-space: pre;
  overflow-x: auto;
}
.c-key { color: #ff9b6a; }
.c-class { color: #ffd479; }
.c-str { color: #8fd6c1; }
.c-num { color: #7fb8ff; }

.floating-chip {
  position: absolute;
  padding: 9px 16px;
  border-radius: 100px;
  background: rgba(15, 50, 60, 0.85);
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-0);
  backdrop-filter: blur(8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
  animation: float 6s ease-in-out infinite;
}
.chip-1 { top: 4%; left: 0%; animation-delay: 0s; }
.chip-2 { top: 12%; right: 2%; animation-delay: 1.2s; }
.chip-3 { bottom: 10%; left: 4%; animation-delay: 2.1s; }
.chip-4 { bottom: 0%; right: 8%; animation-delay: 0.6s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ---------- section shared ---------- */
section { padding: 80px 0; position: relative; }

.section-title {
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.5px;
  color: var(--text-0);
}

.section-header { margin-bottom: 56px; display: flex; align-items: flex-end; gap: 48px; flex-wrap: wrap; }
.section-lede { max-width: 360px; color: var(--text-1); font-size: 15.5px; padding-bottom: 4px; }

/* ---------- about ---------- */
.about-grid {
  margin-top: 56px;
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 56px;
}

.about-portrait { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.portrait-frame {
  width: 100%;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--teal), var(--bg-1));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.portrait-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 20%, rgba(255, 122, 41, 0.25), transparent 55%);
}
.portrait-initials {
  font-family: var(--font-head);
  font-size: 96px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: -2px;
  z-index: 1;
}
.portrait-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}
.portrait-tag {
  background: var(--accent);
  color: #1a0d02;
  font-size: 12.5px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 100px;
  white-space: nowrap;
  box-shadow: 0 10px 24px rgba(255, 122, 41, 0.3);
}

.about-copy p { color: var(--text-1); font-size: 16px; margin: 0 0 18px; max-width: 640px; }
.about-copy strong { color: var(--text-0); }

.competencies { margin-top: 36px; display: flex; flex-direction: column; gap: 24px; }
.comp-group h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 12px;
}

.tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tags span {
  font-size: 13px;
  padding: 7px 14px;
  border-radius: 100px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-1);
}

/* ---------- impact ---------- */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
}
.impact-card {
  padding: 40px 28px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.impact-card:last-child { border-right: none; }
.impact-card strong {
  font-family: var(--font-head);
  font-size: 40px;
  color: var(--accent);
}
.impact-card span { font-size: 14px; color: var(--text-1); }

/* ---------- work / case studies ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.work-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.work-card:hover { transform: translateY(-4px); border-color: rgba(255, 122, 41, 0.35); }

.work-card-panel {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 20px 28px;
  position: relative;
  overflow: hidden;
}
.work-card-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.06) 1px, transparent 1px);
  background-size: 22px 22px;
}
.work-card-mark {
  font-family: var(--font-head);
  font-size: 44px;
  font-weight: 800;
  color: rgba(255, 255, 255, 0.85);
  z-index: 1;
}
.work-card-logo-plate {
  position: absolute;
  inset: 0;
  margin: auto;
  width: fit-content;
  height: fit-content;
  max-width: 78%;
  padding: 14px 26px;
  background: #ffffff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.3);
  z-index: 2;
}
.work-card-logo {
  max-width: 100%;
  max-height: 38px;
  object-fit: contain;
  display: block;
}
.panel-hitachi { background: linear-gradient(135deg, #163a44, #0c242b); }
.panel-synlab { background: linear-gradient(135deg, #1d4a52, #0c2830); }
.panel-metrixlab { background: linear-gradient(135deg, #2c3b4a, #101c26); }
.panel-fidelcard { background: linear-gradient(135deg, #7a3d16, #1a0d02); }

.work-card-body { padding: 28px 28px 32px; display: flex; flex-direction: column; gap: 14px; flex: 1; }

.work-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12.5px;
  color: var(--text-2);
}
.work-card-period { font-weight: 600; }
.work-card-role { color: var(--accent); font-weight: 600; }

.work-card-body h3 {
  font-size: 21px;
  line-height: 1.3;
  color: var(--text-0);
}
.work-card-body .work-card-company {
  color: var(--text-2);
  font-weight: 500;
  font-size: 14.5px;
  margin: -8px 0 0;
}

.work-card-body > p { color: var(--text-1); font-size: 14.5px; margin: 0; }

.work-card-body ul { display: flex; flex-direction: column; gap: 9px; }
.work-card-body ul li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-1);
  line-height: 1.55;
}
.work-card-body ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.work-card-body .tags { margin-top: 6px; }
.work-card-body .tags span { font-size: 12px; padding: 5px 12px; }

.work-card--wide { grid-column: span 1; }

/* ---------- education ---------- */
.education-grid {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.edu-card {
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.edu-card h3 { font-size: 18px; color: var(--accent); }
.edu-card p { margin: 0; color: var(--text-0); font-size: 15px; }
.edu-card > span { color: var(--text-2); font-size: 13.5px; }
.edu-card .tags { margin-top: 4px; }
.edu-card .tags span { font-size: 12.5px; }

/* ---------- contact ---------- */
.contact {
  text-align: center;
  padding-top: 80px;
  padding-bottom: 60px;
}
.contact .eyebrow { justify-content: center; }
.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.4vw, 36px);
  font-weight: 700;
  color: var(--text-0);
  letter-spacing: -0.5px;
  transition: color 0.25s ease;
}
.contact-email:hover { color: var(--accent); }
.contact-arrow {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--accent);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-arrow svg { width: 18px; height: 18px; }
.contact-sub { color: var(--text-2); margin-top: 22px; font-size: 15px; }

.contact-links { margin-top: 32px; display: flex; justify-content: center; gap: 28px; }
.contact-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-1);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.contact-links a:hover { color: var(--accent); border-color: var(--accent); }

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-nav { display: flex; gap: 24px; font-size: 13.5px; }
.footer-nav a { color: var(--text-2); }
.footer-nav a:hover { color: var(--text-0); }
.footer-copy { color: var(--text-2); font-size: 13px; margin: 0; }

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 130px; text-align: left; }
  .hero-visual { margin-top: 40px; min-height: 340px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-portrait { max-width: 260px; }
  .impact-grid { grid-template-columns: repeat(2, 1fr); }
  .impact-card:nth-child(2) { border-right: none; }
  .impact-card { border-bottom: 1px solid var(--border); }
  .work-grid { grid-template-columns: 1fr; }
  .education-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .hire-badge { width: 52px; height: 52px; }
  .site-header.nav-open .nav {
    display: flex;
    position: fixed;
    top: 68px;
    left: 16px;
    right: 16px;
    background: rgba(9, 30, 35, 0.97);
    border: 1px solid var(--border);
    border-radius: 16px;
    flex-direction: column;
    padding: 20px;
    gap: 4px;
    backdrop-filter: blur(16px);
  }
  .site-header.nav-open .nav a { padding: 12px 4px; border-bottom: 1px solid var(--border); }
  .site-header.nav-open .nav a:last-child { border-bottom: none; }
  .header-actions { gap: 12px; }
  .social-links { display: none; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  section { padding: 60px 0; }
  .contact { padding-top: 60px; }
}

@media (max-width: 480px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .hero-cta { flex-direction: column; align-items: flex-start; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}