:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0c1a2e;
  --surface: #102238;
  --surface-2: #142a45;
  --text: #edf5ff;
  --muted: #a8b8ca;
  --line: rgba(190, 210, 235, 0.18);
  --accent: #5db7ff;
  --accent-2: #7dd3fc;
  --gold: #f1c76a;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.32);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f5f8fc;
  --bg-soft: #e8f0fa;
  --surface: #ffffff;
  --surface-2: #eef5fd;
  --text: #071525;
  --muted: #53657a;
  --line: rgba(21, 48, 78, 0.14);
  --accent: #0f5fa8;
  --accent-2: #0b7cc8;
  --gold: #a66f00;
  --shadow: 0 24px 70px rgba(19, 45, 78, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(93, 183, 255, 0.22), transparent 28rem),
    linear-gradient(180deg, var(--bg), var(--bg-soft));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

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

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 9ch;
  margin: 0;
  font-size: clamp(4rem, 12vw, 8.7rem);
  line-height: 0.9;
  letter-spacing: 0;
}

h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.1rem);
  line-height: 1.02;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 1.12rem;
  line-height: 1.25;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 16px clamp(18px, 4vw, 56px);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.14);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 850;
}

.brand span {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-2);
  background: var(--surface);
}

.brand span svg {
  width: 23px;
  height: 23px;
}

.site-nav {
  display: flex;
  justify-content: center;
  gap: clamp(12px, 1.8vw, 26px);
  font-size: 0.94rem;
  font-weight: 750;
}

.site-nav a {
  padding: 8px 0;
  color: var(--muted);
}

.site-nav a:hover {
  color: var(--text);
}

.header-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.icon-button,
.chip-button,
.nav-toggle {
  display: grid;
  height: 42px;
  min-width: 42px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
}

.chip-button {
  padding: 0 14px;
  font-weight: 850;
}

.nav-toggle {
  display: none;
}

svg {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
}

.hero {
  min-height: 92vh;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 430px);
  gap: clamp(28px, 6vw, 88px);
  align-items: center;
  padding: 130px clamp(18px, 6vw, 84px) 70px;
}

.hero-copy {
  max-width: 840px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-copy p:not(.eyebrow) {
  max-width: 720px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.32rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button,
.icon-link {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  font-weight: 850;
}

.button {
  padding: 12px 18px;
}

.button.primary {
  color: #06101c;
  background: var(--accent-2);
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--surface);
}

.profile-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--surface-2) 82%, transparent));
  box-shadow: var(--shadow);
}

.profile-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center top;
  background: var(--surface-2);
}

.profile-meta {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
  border-top: 1px solid var(--line);
}

.profile-meta span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.profile-meta strong {
  font-size: 0.98rem;
}

.section,
.contact-section {
  padding: clamp(70px, 10vw, 124px) clamp(18px, 6vw, 84px);
}

.section-heading {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(30px, 5vw, 58px);
}

.about-grid,
.cv-layout,
.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 390px);
  gap: clamp(26px, 6vw, 72px);
}

.text-block {
  max-width: 860px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.text-block p {
  margin: 0 0 18px;
}

.fact-grid {
  display: grid;
  gap: 12px;
}

.fact-grid div,
.timeline-item,
.skills-panel,
.detail-card,
.certificate-grid article,
.certificate-list a {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.08);
}

.fact-grid div {
  display: grid;
  gap: 6px;
  padding: 20px;
}

.fact-grid strong {
  color: var(--accent-2);
  font-size: 1.35rem;
  line-height: 1.15;
}

.fact-grid span,
.timeline-item p,
.detail-card p,
.certificate-grid p,
.plain-list,
.contact-section p {
  color: var(--muted);
}

.experience-section,
.hobbies-section {
  background: color-mix(in srgb, var(--surface-2) 42%, transparent);
}

.thesis-section {
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--surface-2) 74%, transparent), transparent),
    var(--bg);
}

.thesis-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: clamp(24px, 5vw, 62px);
  align-items: start;
  padding: clamp(24px, 5vw, 42px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.thesis-panel svg {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: var(--accent-2);
}

.status-pill {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 14px;
  padding: 7px 11px;
  border: 1px solid color-mix(in srgb, var(--accent-2) 55%, var(--line));
  border-radius: 999px;
  color: var(--accent-2);
  background: color-mix(in srgb, var(--accent-2) 12%, transparent);
  font-size: 0.82rem;
  font-weight: 900;
}

.thesis-panel p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.thesis-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.thesis-list li {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: var(--surface-2);
  font-weight: 800;
}

.timeline {
  display: grid;
  gap: 16px;
}

.cv-main {
  display: grid;
  gap: 30px;
}

.cv-group {
  display: grid;
  gap: 14px;
}

.cv-group > h3 {
  margin: 0;
  color: var(--accent-2);
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-item {
  position: relative;
  padding: 24px 24px 24px 34px;
}

.timeline-item::before {
  position: absolute;
  top: 24px;
  bottom: 24px;
  left: 16px;
  width: 3px;
  border-radius: 99px;
  background: var(--accent);
  content: "";
}

.timeline-item span {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 900;
}

.timeline-item p,
.detail-card p,
.certificate-grid p {
  margin: 0;
}

.skills-panel {
  align-self: start;
  padding: 24px;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 28px;
}

.skill-list span {
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface-2);
  font-size: 0.88rem;
  font-weight: 750;
}

.plain-list {
  margin: 12px 0 0;
  padding-left: 20px;
}

.project-grid,
.hobby-grid,
.certificate-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.hobby-grid,
.certificate-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.detail-card,
.certificate-grid article,
.certificate-list a {
  min-height: 230px;
  display: grid;
  align-content: start;
  text-align: left;
  gap: 14px;
  padding: 24px;
}

.detail-card {
  width: 100%;
  color: var(--text);
  font: inherit;
  cursor: pointer;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.detail-card:hover,
.detail-card.is-selected {
  border-color: color-mix(in srgb, var(--accent-2) 70%, var(--line));
  background: color-mix(in srgb, var(--surface) 78%, var(--accent) 10%);
  transform: translateY(-2px);
}

.detail-card > span {
  display: inline-flex;
  width: fit-content;
  margin-top: 6px;
  padding: 7px 10px;
  border-radius: 999px;
  color: #06101c;
  background: var(--accent-2);
  font-size: 0.82rem;
  font-weight: 900;
}

.detail-panels {
  margin-top: 18px;
}

.detail-panel {
  display: none;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 1.1fr);
  gap: clamp(18px, 4vw, 42px);
  align-items: start;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 84%, var(--surface-2));
  box-shadow: var(--shadow);
}

.detail-panel.is-active {
  display: grid;
}

.detail-panel p:not(.eyebrow) {
  color: var(--muted);
  margin: 0;
}

.resource-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.resource-links a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 9px;
  padding: 10px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--surface-2);
  font-weight: 850;
}

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

.project-gallery a {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-soft);
}

.project-gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 180ms ease;
}

.project-gallery a:hover img {
  transform: scale(1.03);
}

.book-shelf {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 10px;
  max-height: 430px;
  overflow: auto;
  padding-right: 4px;
}

.book-shelf article {
  display: grid;
  gap: 6px;
  min-height: 82px;
  align-content: center;
  padding: 16px;
  border: 1px dashed color-mix(in srgb, var(--accent-2) 45%, var(--line));
  border-radius: 8px;
  background: var(--bg-soft);
}

.coming-soon-panel {
  display: grid;
  gap: 6px;
  min-height: 150px;
  align-content: center;
  padding: 22px;
  border: 1px dashed color-mix(in srgb, var(--accent-2) 45%, var(--line));
  border-radius: 8px;
  background: var(--bg-soft);
}

.coming-soon-panel span {
  color: var(--muted);
}

.book-shelf span {
  color: var(--muted);
}

.certificate-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.certificate-list a {
  min-height: 130px;
  color: var(--text);
  font-weight: 850;
  transition: border-color 180ms ease, transform 180ms ease;
}

.certificate-list a:hover {
  border-color: color-mix(in srgb, var(--accent-2) 70%, var(--line));
  transform: translateY(-2px);
}

.detail-card svg,
.certificate-grid svg,
.resource-links svg {
  width: 34px;
  height: 34px;
  color: var(--accent-2);
}

.detail-card .basketball-icon {
  color: var(--accent-2);
  fill: color-mix(in srgb, var(--accent-2) 20%, transparent);
  stroke: currentColor;
  stroke-width: 2.3;
}

.contact-section {
  align-items: center;
  background: #06101c;
}

:root[data-theme="light"] .contact-section {
  color: #fff;
  background: #0a3660;
}

.contact-section .eyebrow {
  color: var(--gold);
}

.contact-section h2 {
  max-width: 680px;
}

.contact-section p {
  max-width: 620px;
}

.contact-section p:empty {
  display: none;
}

.contact-actions {
  display: grid;
  gap: 12px;
}

.icon-link {
  width: 100%;
  justify-content: flex-start;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.brand-icon {
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
}

.linkedin-mark {
  fill: #0a66c2;
}

.muted-link {
  cursor: default;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 24px clamp(18px, 6vw, 84px);
  color: var(--muted);
  background: var(--surface);
}

@media (max-width: 1060px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: auto auto auto;
    justify-content: space-between;
    background: color-mix(in srgb, var(--bg) 90%, transparent);
    backdrop-filter: blur(16px);
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 18px;
    left: 18px;
    display: none;
    grid-template-columns: 1fr;
    gap: 0;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    padding: 12px;
  }

  .hero,
  .about-grid,
  .cv-layout,
  .thesis-panel,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 126px;
  }

  .profile-card {
    max-width: 430px;
  }

  .hobby-grid,
  .certificate-grid,
  .certificate-list {
    grid-template-columns: 1fr;
  }

  .detail-panel,
  .project-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .brand strong {
    display: none;
  }

  h1 {
    font-size: clamp(3.2rem, 18vw, 4.8rem);
  }

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

  .button {
    width: 100%;
  }

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

  .site-footer {
    flex-direction: column;
  }
}