:root {
  --bg: #f5f1e8;
  --bg-soft: rgba(255, 255, 255, 0.68);
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #fffdf8;
  --text: #1d1b18;
  --muted: #5d564d;
  --line: rgba(40, 33, 24, 0.12);
  --accent: #b65a2a;
  --accent-strong: #8d3f17;
  --accent-soft: rgba(182, 90, 42, 0.12);
  --shadow: 0 24px 60px rgba(76, 56, 32, 0.12);
}

body.dark-theme {
  --bg: #101722;
  --bg-soft: rgba(18, 26, 38, 0.74);
  --surface: rgba(19, 28, 42, 0.82);
  --surface-strong: #162132;
  --text: #e9edf5;
  --muted: #a7b3c5;
  --line: rgba(233, 237, 245, 0.1);
  --accent: #ff9b61;
  --accent-strong: #ffb486;
  --accent-soft: rgba(255, 155, 97, 0.14);
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(182, 90, 42, 0.16), transparent 34%),
    radial-gradient(circle at right center, rgba(33, 112, 99, 0.12), transparent 30%),
    linear-gradient(180deg, var(--bg) 0%, #f9f7f2 100%);
  color: var(--text);
  transition: background-color 0.3s ease, color 0.3s ease;
}

body.dark-theme {
  background:
    radial-gradient(circle at top left, rgba(255, 155, 97, 0.18), transparent 30%),
    radial-gradient(circle at right center, rgba(92, 162, 150, 0.14), transparent 26%),
    linear-gradient(180deg, #0e1620 0%, #111d2d 100%);
}

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

button {
  font: inherit;
}

.page-shell {
  overflow: hidden;
}

.container {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 5rem 0;
}

.header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: rgba(245, 241, 232, 0.56);
  border-bottom: 1px solid transparent;
}

body.dark-theme .header {
  background: rgba(16, 23, 34, 0.56);
}

.header.scrolled {
  border-color: var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.75rem;
  gap: 1rem;
}

.nav__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.nav__brand-dot {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #d4a64a);
  box-shadow: 0 0 0 0.35rem var(--accent-soft);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav__menu a,
.theme-toggle {
  color: var(--muted);
}

.nav__menu a:hover,
.theme-toggle:hover {
  color: var(--text);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--line);
  background: var(--surface);
  padding: 0.6rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  transform: translateY(-1px);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  width: 3rem;
  height: 3rem;
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 999px;
  cursor: pointer;
}

.nav__toggle span {
  width: 1.1rem;
  height: 2px;
  background: var(--text);
  margin: 0 auto;
}

.hero {
  padding-top: 6.25rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(290px, 0.9fr);
  gap: 2rem;
  align-items: stretch;
}

.eyebrow {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--accent);
}

.hero h1,
.section-heading h2,
.contact h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  max-width: 11ch;
}

.hero__description,
.panel p,
.timeline__content p,
.project-card p,
.contact__text,
.achievement-card p {
  color: var(--muted);
  line-height: 1.7;
}

.hero__description {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  font-size: 1.08rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

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

.button--primary {
  background: linear-gradient(135deg, var(--accent), #d18a35);
  color: #fff;
  box-shadow: 0 12px 24px rgba(182, 90, 42, 0.24);
}

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

.hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2.2rem;
}

.hero__meta article,
.hero__card,
.panel,
.project-card,
.achievement-card,
.contact__wrap {
  border: 1px solid var(--line);
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.hero__meta article {
  padding: 1.15rem;
  border-radius: 1.5rem;
}

.hero__meta strong {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 1.2rem;
}

.hero__meta span {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.5;
}

.hero__card {
  position: relative;
  padding: 1.6rem;
  border-radius: 2rem;
  overflow: hidden;
  align-self: start;
  height: fit-content;
}

.hero__card::before {
  content: "";
  position: absolute;
  inset: auto auto -3rem -2rem;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-soft), transparent 72%);
}

.hero__card-top,
.hero__card-links {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.hero__card-top p,
.hero__card-top span {
  margin: 0;
}

.hero__card-top p,
.hero__card-links a {
  color: var(--muted);
}

.hero__card-body {
  padding: 2.5rem 0 2rem;
}

.hero__badge,
.project-card__label {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__card-body h2 {
  margin: 1rem 0 0.75rem;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 1.08;
}

.hero__card-body p {
  margin: 0;
  max-width: 25rem;
  color: var(--muted);
  line-height: 1.7;
}

.section-heading {
  display: grid;
  gap: 0.55rem;
  margin-bottom: 2rem;
}

.section-heading h2 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  max-width: 14ch;
}

.about__grid,
.split-grid,
.skills-grid,
.contact__wrap {
  display: grid;
  gap: 1.5rem;
}

.about__grid {
  grid-template-columns: 1.15fr 0.95fr;
}

.panel {
  padding: 1.6rem;
  border-radius: 1.7rem;
}

.panel--accent {
  background:
    linear-gradient(135deg, var(--surface) 0%, rgba(182, 90, 42, 0.08) 100%);
}

.panel h3,
.timeline__item h3,
.project-card h3,
.contact__wrap h2,
.hero__card h2,
.experience-block h4 {
  margin-top: 0;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
}

.tag-list li {
  padding: 0.65rem 0.85rem;
  border-radius: 999px;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.timeline__item {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  gap: 1.5rem;
  align-items: start;
}

.timeline__meta {
  position: sticky;
  top: 6rem;
}

.timeline__meta span {
  color: var(--accent);
  font-weight: 700;
}

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

.timeline__content {
  display: grid;
  gap: 1rem;
}

.experience-block {
  padding: 1.6rem;
  border-radius: 1.7rem;
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.experience-block ul,
.project-card ul {
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.7;
}

.section--split {
  padding-top: 1rem;
}

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

.achievement-list,
.project-grid,
.leetcode {
  display: grid;
  gap: 1rem;
}

.achievement-card,
.project-card {
  padding: 1.4rem;
  border-radius: 1.7rem;
}

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

.project-card__stack {
  margin: 1rem 0 0;
  font-weight: 700;
  color: var(--text) !important;
}

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

.leetcode {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 1.1fr);
  align-items: stretch;
}

.leetcode__content h3,
.leetcode__visual-top strong {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}

.leetcode__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.5rem;
}

.leetcode__stats div {
  padding: 1rem;
  border-radius: 1.1rem;
  background: var(--surface-strong);
  border: 1px solid var(--line);
}

.leetcode__stats strong {
  display: block;
  font-size: 1.4rem;
  margin-bottom: 0.3rem;
}

.leetcode__stats span,
.leetcode__visual-top span,
.leetcode__months span {
  color: var(--muted);
}

.leetcode__visual {
  background:
    linear-gradient(180deg, rgba(8, 14, 22, 0.9) 0%, rgba(13, 20, 31, 0.95) 100%);
}

body:not(.dark-theme) .leetcode__visual {
  background:
    linear-gradient(180deg, rgba(17, 23, 31, 0.96) 0%, rgba(23, 32, 45, 0.98) 100%);
}

.leetcode__visual-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  color: #f2f5fa;
}

.leetcode__image {
  display: block;
  width: 100%;
  border-radius: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.contact__wrap {
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.9fr);
  align-items: center;
  padding: 2rem;
  border-radius: 2rem;
}

.contact__links {
  display: grid;
  gap: 0.9rem;
}

.contact__links a {
  padding: 0.95rem 1rem;
  border-radius: 1rem;
  background: var(--surface-strong);
  border: 1px solid var(--line);
  color: var(--muted);
}

.contact__links a:hover {
  color: var(--text);
  border-color: rgba(182, 90, 42, 0.36);
}

@media (max-width: 920px) {
  .hero__grid,
  .about__grid,
  .timeline__item,
  .split-grid,
  .leetcode,
  .project-grid,
  .skills-grid,
  .contact__wrap {
    grid-template-columns: 1fr;
  }

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

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

  .timeline__meta {
    position: static;
  }

  .section {
    padding: 4rem 0;
  }
}

@media (max-width: 760px) {
  .nav__toggle {
    display: inline-flex;
  }

  .nav__menu {
    position: absolute;
    top: calc(100% + 0.75rem);
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 1.4rem;
    background: var(--surface-strong);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-0.5rem);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .nav__menu.show-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .hero {
    padding-top: 5rem;
  }

  .hero h1 {
    max-width: none;
  }
}