:root {
  --bg-deep: #06141d;
  --bg-mid: #0c1d2b;
  --bg-soft: #f3f7fb;
  --panel: #ffffff;
  --panel-strong: #0f1d2b;
  --text: #102031;
  --text-soft: #223b52;
  --muted: #587084;
  --line: rgba(148, 163, 184, 0.24);
  --primary: #76f2d9;
  --primary-strong: #4cc9f0;
  --accent: #7c6af5;
  --warm: #f7b267;
  --success: #3ddc97;
  --shadow: 0 24px 60px rgba(4, 12, 18, 0.18);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
  background:
    radial-gradient(circle at top left, rgba(118, 242, 217, 0.12), transparent 22%),
    radial-gradient(circle at bottom right, rgba(124, 106, 245, 0.1), transparent 24%),
    linear-gradient(180deg, #f4f7fb 0%, #eef4fa 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.2) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.2) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.2;
  pointer-events: none;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

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

.container,
.nav-wrap {
  width: min(1180px, calc(100% - 64px));
  margin: auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.8);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  gap: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-strong) 100%);
  color: #03131d;
  font-size: 0.8rem;
  font-weight: 900;
  box-shadow: 0 12px 24px rgba(56, 189, 248, 0.25);
}

.brand span:not(.brand-mark) {
  border-left: 1px solid var(--line);
  padding-left: 12px;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  position: relative;
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding: 8px 0;
}

nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

nav a:hover::after,
nav a:focus-visible::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  place-content: center;
  gap: 5px;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 99px;
  background: var(--text);
  transition: transform 180ms ease, opacity 180ms ease;
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  padding: 84px 0 0;
  overflow: hidden;
  color: #edf5ff;
  background:
    radial-gradient(circle at top left, rgba(94, 234, 212, 0.25), transparent 28%),
    radial-gradient(circle at bottom right, rgba(139, 92, 246, 0.22), transparent 30%),
    linear-gradient(135deg, var(--bg-deep) 0%, var(--bg-mid) 52%, #0b1d31 100%);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 100%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, 0.9fr);
  gap: 72px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--primary);
  line-height: 1.6;
}

.hero .eyebrow,
.contact .eyebrow {
  color: var(--primary);
}

.section-tag {
  display: inline-block;
  margin: 0 0 12px;
  font-size: clamp(1.4rem, 2vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  color: var(--primary-strong);
  line-height: 1.1;
  text-shadow: 0 0 18px rgba(110, 231, 183, 0.16);
}

h1,
h2,
h3,
h4 {
  letter-spacing: -0.05em;
  line-height: 1.08;
  margin: 0 0 20px;
}

h1 {
  font-size: clamp(2.8rem, 5vw, 5rem);
  max-width: 760px;
}

h1 span {
  color: var(--primary);
}

.hero-intro {
  max-width: 640px;
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.7;
  color: rgba(226, 236, 249, 0.8);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-decoration: none;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
  filter: brightness(1.03);
}

.primary {
  background: linear-gradient(135deg, var(--primary) 0%, #d5fff4 100%);
  color: #061d2b;
  box-shadow: 0 20px 36px rgba(118, 242, 217, 0.24);
}

.secondary {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(140, 160, 185, 0.28);
  color: #edf5ff;
}

.secondary:hover {
  background: rgba(255, 255, 255, 0.06);
  color: #ffffff;
}

.hero-aside {
  position: relative;
  padding-left: 28px;
  border-left: 1px solid rgba(181, 202, 220, 0.2);
}

.architecture-map {
  background: rgba(9, 18, 27, 0.55);
  border: 1px solid rgba(134, 159, 180, 0.25);
  border-radius: 20px;
  padding: 22px 18px 18px;
  box-shadow: var(--shadow);
}

.map-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(224, 233, 245, 0.78);
}

.map-core {
  position: relative;
  width: min(100%, 255px);
  margin: 28px auto 0;
  padding: 18px 18px 16px;
  border-left: 3px solid var(--primary);
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(20, 29, 40, 0.9), rgba(20, 36, 49, 0.9));
}

.map-core::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 100%;
  width: 1px;
  height: 18px;
  background: rgba(176, 194, 214, 0.8);
}

.map-core span {
  display: block;
  margin-bottom: 6px;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(224, 233, 245, 0.72);
}

.map-core strong {
  font-size: 1.04rem;
  color: var(--primary);
}

.map-nodes {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
  padding-top: 18px;
}

.map-nodes::before {
  content: "";
  position: absolute;
  top: 0;
  left: 16%;
  right: 16%;
  border-top: 1px solid rgba(176, 194, 214, 0.7);
}

.map-nodes span {
  position: relative;
  padding: 10px 6px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
  text-align: center;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #edf5ff;
}

.map-nodes span::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 100%;
  width: 1px;
  height: 12px;
  background: rgba(176, 194, 214, 0.7);
}

.experience-mark {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 26px;
}

.experience-mark strong {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  color: var(--primary);
  line-height: 1;
}

.experience-mark span {
  color: rgba(226, 236, 249, 0.82);
  font-size: 0.82rem;
  line-height: 1.5;
}

.stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 72px;
  padding: 30px 0 32px;
  border-top: 1px solid rgba(176, 194, 214, 0.2);
}

.stats div {
  padding: 0 14px;
  border-right: 1px solid rgba(176, 194, 214, 0.18);
}

.stats div:last-child {
  border-right: 0;
}

.stats strong {
  display: block;
  font-size: clamp(1.4rem, 2vw, 2rem);
  color: var(--primary);
  line-height: 1.2;
}

.stats span {
  display: block;
  margin-top: 6px;
  font-size: 0.78rem;
  color: rgba(226, 236, 249, 0.7);
}

.section {
  padding-top: 92px;
  padding-bottom: 92px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.section-heading .eyebrow,
.section-heading .section-tag {
  display: block;
  margin-bottom: 12px;
}

h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  letter-spacing: -0.06em;
}

.section-heading h2 + h2 {
  margin-top: 0;
  font-size: clamp(1.6rem, 2vw, 2.4rem);
  line-height: 1.2;
  color: var(--text-soft);
}

h3 {
  font-size: 1.45rem;
  letter-spacing: -0.04em;
}

p {
  margin: 0 0 18px;
  color: var(--text-soft);
}

.about-copy {
  max-width: 900px;
  font-size: 1.08rem;
  line-height: 1.82;
}

.tinted {
  background: linear-gradient(180deg, #f4f7fb 0%, #edf3f7 100%);
}

.projects {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.project {
  position: relative;
  padding: 30px 28px 24px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(245, 249, 252, 0.95));
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-top: 4px solid var(--primary);
  border-radius: 24px;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.04);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.project:nth-child(even) {
  border-top-color: var(--accent);
}

.project:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 50px rgba(17, 24, 39, 0.09);
}

.project-number {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.project .eyebrow {
  margin-bottom: 14px;
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.project p {
  color: var(--muted);
}

summary {
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-soft);
}

summary:hover {
  color: var(--text);
}

details {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

dt {
  margin-top: 16px;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text);
}

dd {
  margin: 6px 0 0;
  color: var(--muted);
}

.job {
  position: relative;
  margin-top: 30px;
  padding: 0 0 36px 30px;
  border-left: 2px solid rgba(148, 163, 184, 0.3);
}

.job:last-child {
  padding-bottom: 0;
}

.job::before {
  content: "";
  position: absolute;
  top: 0;
  left: -6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border: 2px solid #f9fbfd;
}

.job-top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.role {
  margin: 0;
  color: #0f766e;
  font-weight: 800;
}

.date {
  white-space: nowrap;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.muted {
  color: var(--muted);
  margin-top: 18px;
}

ul {
  padding-left: 22px;
}

li {
  margin-bottom: 8px;
  color: var(--text-soft);
}

.earlier {
  max-width: 820px;
  margin: 42px 0 0 32px;
}

.skills {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.skill {
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.5);
  border-bottom: 1px solid var(--line);
}

.skill h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
}

.skill p {
  color: var(--muted);
}

.credentials {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 54px;
  align-items: start;
}

.credentials h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.credentials ul {
  margin-top: 10px;
}

.contact {
  padding: 72px 0;
  background:
    radial-gradient(circle at top left, rgba(118, 242, 217, 0.14), transparent 22%),
    linear-gradient(180deg, rgba(6, 18, 28, 0.84) 0%, rgba(8, 18, 29, 0.96) 100%),
    linear-gradient(90deg, rgba(94, 234, 212, 0.08), rgba(139, 92, 246, 0.08));
  color: #edf5ff;
  border-top: 4px solid var(--primary);
}

.contact p {
  color: rgba(226, 236, 249, 0.8);
}

.contact-detail {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}

footer {
  background: #071621;
  color: rgba(214, 227, 241, 0.8);
  font-size: 0.78rem;
  padding: 22px 0;
}

.skip {
  position: absolute;
  top: -120px;
  left: 12px;
  padding: 10px 12px;
  background: white;
  border-radius: 10px;
  z-index: 20;
  color: var(--text);
}

.skip:focus {
  top: 12px;
}

:focus-visible {
  outline: 3px solid var(--warm);
  outline-offset: 4px;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-grid > div,
.hero-aside {
  animation: rise-in 600ms ease both;
}

.hero-aside {
  animation-delay: 120ms;
}

.stats {
  animation: rise-in 680ms 180ms ease both;
}

@media (max-width: 800px) {
  .container,
  .nav-wrap {
    width: calc(100% - 40px);
  }

  .hero {
    padding-top: 64px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .hero-aside {
    border-left: 0;
    border-top: 1px solid rgba(181, 202, 220, 0.2);
    padding: 26px 0 0;
  }

  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 12px;
  }

  .stats div {
    padding: 0;
    border-right: 0;
  }

  .section {
    padding: 68px 0;
  }

  .projects,
  .skills,
  .credentials {
    grid-template-columns: 1fr;
  }

  .credentials {
    gap: 32px;
  }

  .menu-toggle {
    display: grid;
  }

  .nav-wrap {
    flex-wrap: wrap;
    padding: 12px 0;
  }

  .nav-wrap nav {
    display: none;
    width: 100%;
    gap: 12px 18px;
    padding: 8px 0 4px;
  }

  nav.open {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  nav a {
    min-height: 36px;
    align-content: center;
  }

  .project {
    padding: 24px 20px;
  }

  .job-top {
    display: block;
  }

  .date {
    display: block;
    margin-top: 8px;
  }
}

@media (max-width: 480px) {
  .container,
  .nav-wrap {
    width: calc(100% - 32px);
  }

  .brand {
    font-size: 0.94rem;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .hero {
    padding-top: 56px;
  }

  .hero-intro {
    font-size: 1.02rem;
  }

  .actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  h1 {
    font-size: 2.6rem;
  }

  h2 {
    font-size: 2.1rem;
  }

  .section-heading {
    margin-bottom: 28px;
  }

  .project {
    padding: 22px 18px;
  }

  .map-nodes span {
    font-size: 0.56rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  header,
  .actions,
  footer,
  .menu-toggle {
    display: none;
  }

  .hero,
  .contact {
    background: white;
    color: black;
  }

  .hero *,
  .contact * {
    color: black !important;
  }

  .section {
    padding: 28px 0;
  }

  .container {
    width: 100%;
  }

  details {
    display: none;
  }
}