* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --ink: #101418;
  --muted: #5d6978;
  --line: #dfe5eb;
  --paper: #ffffff;
  --soft: #f4f7f8;
  --green: #0f7b6c;
  --blue: #2358d4;
  --orange: #f47d42;
  --yellow: #f5c84c;
  --dark: #151b22;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(244, 247, 248, 0.9)),
    radial-gradient(circle at top left, rgba(15, 123, 108, 0.16), transparent 34%),
    var(--soft);
  font-family: Arial, Helvetica, sans-serif;
}

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

.page-shell {
  overflow: hidden;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(244, 247, 248, 0.86);
  backdrop-filter: blur(18px);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 20px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 900;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  box-shadow: 0 10px 24px rgba(16, 20, 24, 0.06);
  object-fit: cover;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-links a {
  color: #4a5564;
  font-size: 15px;
  font-weight: 800;
}

.nav-links a:hover {
  color: var(--green);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.9fr);
  gap: 56px;
  align-items: center;
  width: min(1140px, calc(100% - 48px));
  min-height: calc(100vh - 80px);
  margin: 0 auto;
  padding: 64px 0 84px;
}

.eyebrow,
.section-kicker {
  color: var(--green);
  font-size: 15px;
  font-weight: 900;
  line-height: 1.5;
}

.hero h1 {
  margin-top: 6px;
  color: var(--ink);
  font-size: 80px;
  font-weight: 900;
  line-height: 0.95;
  letter-spacing: 0;
}

.hero-text {
  max-width: 650px;
  margin-top: 24px;
  color: #334155;
  font-size: 22px;
  font-weight: 700;
  line-height: 1.5;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  font-weight: 900;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button:hover {
  transform: translateY(-2px);
  border-color: #aab6c2;
}

.button.primary {
  border-color: var(--green);
  background: var(--green);
  color: white;
}

.lab-board {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, #151b22, #20313a 52%, #0f7b6c);
  background-size: 34px 34px, 34px 34px, auto;
  box-shadow: 0 28px 80px rgba(16, 20, 24, 0.16);
}

.board-topbar {
  display: flex;
  gap: 8px;
  padding: 18px;
}

.board-topbar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.72);
}

.circuit-card {
  position: absolute;
  display: grid;
  gap: 6px;
  min-width: 150px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.12);
  color: white;
  backdrop-filter: blur(14px);
}

.circuit-card strong {
  font-size: 21px;
  font-weight: 900;
}

.card-label {
  color: rgba(255, 255, 255, 0.74);
  font-size: 13px;
  font-weight: 800;
}

.arduino {
  top: 76px;
  left: 36px;
}

.video {
  top: 200px;
  right: 30px;
}

.ai {
  left: 48px;
  bottom: 42px;
}

.robot-face {
  position: absolute;
  right: 72px;
  bottom: 58px;
  width: 190px;
  height: 158px;
  border: 4px solid rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.16);
}

.robot-face::before {
  content: "";
  position: absolute;
  top: -44px;
  left: 50%;
  width: 4px;
  height: 40px;
  background: rgba(255, 255, 255, 0.9);
  transform: translateX(-50%);
}

.robot-face::after {
  content: "";
  position: absolute;
  top: -54px;
  left: 50%;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--yellow);
  transform: translateX(-50%);
}

.robot-face span {
  position: absolute;
  top: 54px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: white;
}

.robot-face span:first-child {
  left: 42px;
}

.robot-face span:last-child {
  right: 42px;
}

section {
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 82px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 54px;
  align-items: start;
}

.section-heading {
  max-width: 780px;
}

h2 {
  color: var(--ink);
  font-size: 43px;
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: 0;
}

.section-copy {
  margin-top: 18px;
  color: var(--muted);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.7;
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 26px;
}

.quick-facts div,
.focus-card,
.focus-points,
.skill-card,
.project-card,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.quick-facts div {
  padding: 18px;
}

.quick-facts strong {
  display: block;
  font-size: 18px;
  font-weight: 900;
}

.quick-facts span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.project-card {
  overflow: hidden;
  box-shadow: 0 14px 38px rgba(16, 20, 24, 0.05);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 54px rgba(16, 20, 24, 0.1);
}

.project-banner {
  height: 210px;
  overflow: hidden;
  background: #dbeafe;
}

.project-banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-visual {
  position: relative;
  height: 210px;
  overflow: hidden;
  background: #dbeafe;
}

.car-visual {
  background: linear-gradient(135deg, #c8f1e5, #0f7b6c);
}

.car-visual::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 64px;
  width: 220px;
  height: 74px;
  border-radius: 8px 8px 18px 18px;
  background: rgba(255, 255, 255, 0.86);
  transform: translateX(-50%);
}

.car-visual::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 116px;
  width: 88px;
  height: 48px;
  border-radius: 8px 8px 2px 2px;
  background: rgba(21, 27, 34, 0.84);
  transform: translateX(-50%);
}

.wheel {
  position: absolute;
  bottom: 43px;
  width: 42px;
  height: 42px;
  border: 9px solid var(--dark);
  border-radius: 50%;
  background: var(--yellow);
  z-index: 2;
}

.wheel.left {
  left: calc(50% - 96px);
}

.wheel.right {
  right: calc(50% - 96px);
}

.humanoid-visual {
  background: linear-gradient(135deg, #eaf0ff, #2358d4);
}

.bot-head {
  position: absolute;
  top: 38px;
  left: 50%;
  width: 92px;
  height: 72px;
  border-radius: 8px;
  background: white;
  transform: translateX(-50%);
}

.bot-head::before,
.bot-head::after {
  content: "";
  position: absolute;
  top: 28px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
}

.bot-head::before {
  left: 24px;
}

.bot-head::after {
  right: 24px;
}

.bot-body {
  position: absolute;
  left: 50%;
  bottom: 34px;
  width: 118px;
  height: 82px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
  transform: translateX(-50%);
}

.app-visual {
  background: linear-gradient(135deg, #f0ffe3, #0f7b6c);
}

.phone-shape {
  position: absolute;
  top: 28px;
  left: 50%;
  width: 112px;
  height: 164px;
  border: 8px solid var(--dark);
  border-radius: 20px;
  background: white;
  transform: translateX(-50%);
}

.leaf-shape {
  position: absolute;
  top: 82px;
  left: 50%;
  width: 54px;
  height: 72px;
  border-radius: 54px 0 54px 0;
  background: var(--green);
  transform: translateX(-50%) rotate(-18deg);
}

.blink-visual {
  background: linear-gradient(135deg, #fff1d1, #f47d42);
}

.glass-left,
.glass-right {
  position: absolute;
  top: 74px;
  width: 104px;
  height: 64px;
  border: 9px solid var(--dark);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.35);
}

.glass-left {
  left: calc(50% - 116px);
}

.glass-right {
  right: calc(50% - 116px);
}

.glass-left::after {
  content: "";
  position: absolute;
  top: 22px;
  right: -34px;
  width: 28px;
  height: 8px;
  background: var(--dark);
}

.project-body {
  padding: 24px;
}

.project-body h3,
.focus-card h3,
.skill-card h3 {
  font-size: 22px;
  font-weight: 900;
  line-height: 1.2;
}

.project-body p,
.focus-card p {
  margin-top: 12px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tags span {
  min-height: 30px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #334155;
  font-size: 13px;
  font-weight: 900;
}

.project-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.project-links a:last-child {
  border-color: var(--green);
  background: var(--green);
  color: white;
}

.projects-profile-link {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.focus-stack {
  display: grid;
  gap: 14px;
}

.focus-card {
  padding: 24px;
}

.focus-type {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.focus-points {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  background: var(--line);
}

.focus-points div {
  padding: 22px;
  background: white;
}

.focus-points strong {
  display: block;
  color: var(--orange);
  font-size: 34px;
  font-weight: 900;
  line-height: 1;
}

.focus-points span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.skill-card {
  padding: 24px;
}

.skill-card ul {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  list-style: none;
}

.skill-card li {
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.4;
}

.learning-band {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 34px;
  align-items: center;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--dark);
  color: white;
}

.learning-band h2 {
  color: white;
}

.learning-band p:last-child {
  color: #d1d8df;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.7;
}

.badge-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.badge-card {
  display: grid;
  gap: 16px;
  align-items: center;
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  text-align: center;
}

.badge-image-wrap {
  display: grid;
  min-height: 170px;
  place-items: center;
  border: 1px dashed #b9c4d0;
  border-radius: 8px;
  background: #f8fafc;
}

.badge-image-wrap img {
  display: block;
  width: 100%;
  max-width: 150px;
  height: 150px;
  object-fit: contain;
}

.badge-card a {
  color: var(--blue);
  font-size: 15px;
  font-weight: 400;
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 34px;
  background: white;
}

.contact-panel p {
  max-width: 620px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.6;
}

.contact-actions {
  justify-content: flex-end;
  margin-top: 0;
}

.email-copy-box {
  display: grid;
  gap: 10px;
  justify-content: flex-end;
}

.email-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: flex-end;
}

.email-row span {
  min-height: 46px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  color: var(--ink);
  font-size: 15px;
  font-weight: 700;
}

.email-row button {
  display: inline-grid;
  width: 46px;
  min-height: 46px;
  place-items: center;
  padding: 0;
  border: 1px solid var(--green);
  border-radius: 8px;
  background: var(--green);
  color: white;
  cursor: pointer;
  font: inherit;
  font-size: 15px;
  font-weight: 900;
}

.email-row button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.email-row button.copied {
  background: var(--blue);
  border-color: var(--blue);
}

.github-contact-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  background: var(--dark);
  color: white;
  font-size: 15px;
  font-weight: 900;
}

.github-contact-button svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

footer {
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 34px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

@media (max-width: 980px) {
  .hero,
  .section-grid,
  .learning-band,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .lab-board {
    max-width: 560px;
  }

  .project-grid,
  .skills-grid,
  .badge-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-actions {
    justify-content: flex-start;
  }

  .email-copy-box {
    justify-content: flex-start;
  }
}

@media (max-width: 760px) {
  .navbar,
  .hero,
  section,
  footer {
    width: min(100% - 32px, 1140px);
  }

  .navbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 14px 20px;
  }

  .hero {
    min-height: auto;
    padding: 54px 0 64px;
  }

  .hero h1 {
    font-size: 56px;
  }

  .hero-text {
    font-size: 18px;
  }

  h2 {
    font-size: 34px;
  }

  .quick-facts,
  .project-grid,
  .skills-grid,
  .badge-grid {
    grid-template-columns: 1fr;
  }

  .lab-board {
    min-height: 420px;
  }
}

@media (max-width: 520px) {
  .hero h1 {
    font-size: 44px;
  }

  .lab-board {
    min-height: 380px;
  }

  .circuit-card {
    min-width: 132px;
    padding: 14px;
  }

  .robot-face {
    right: 28px;
    width: 150px;
    height: 126px;
  }

  .focus-points {
    grid-template-columns: 1fr;
  }

  .learning-band,
  .contact-panel {
    padding: 24px;
  }
}