:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-alt: #fcfcfb;
  --ink: #1f2933;
  --ink-soft: #5f6772;
  --line: #e7e8ea;
  --line-strong: #d7d9dd;
  --accent: #5f8f8a;
  --accent-strong: #4d7a76;
  --surface-hover: #f8fbfb;
  --muted-strong: #4b5563;
  --footer-bg: #2f3d43;
  --hero-start: #2d3a3f;
  --hero-end: #3e5258;
  --on-dark: #f3f4f6;
  --shadow-sm: 0 4px 12px rgba(17, 24, 39, 0.06);
  --shadow-md: 0 12px 26px rgba(17, 24, 39, 0.08);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1120px;
  --ease-fast: 180ms ease;
  --ease-med: 320ms cubic-bezier(0.2, 0.65, 0.2, 1);
}

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

html {
  scroll-padding-top: 0;
  scroll-behavior: smooth;
}

body {
  font-family: "Manrope", "Segoe UI", sans-serif;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  min-height: 100vh;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -3rem;
  z-index: 1200;
  background: var(--ink);
  color: var(--on-dark);
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  text-decoration: none;
  font-size: 0.84rem;
  transition: top var(--ease-fast);
}

.skip-link:focus {
  top: 0.9rem;
}

.container {
  width: min(var(--container), calc(100% - 2.5rem));
  margin-inline: auto;
}

section {
  margin-bottom: 2.2rem;
  scroll-margin-top: 86px;
}

#about,
#experience,
#skills,
#blog,
#education,
#contact {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: clamp(1.2rem, 0.7rem + 1.6vw, 2rem);
  box-shadow: var(--shadow-sm);
  content-visibility: auto;
  contain-intrinsic-size: 1px 900px;
}

.section-title {
  font-size: clamp(1.6rem, 1.05rem + 2.05vw, 2.2rem);
  line-height: 1.2;
  color: var(--ink);
  margin-bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: "";
  width: 6px;
  height: 2rem;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--accent), var(--accent-strong));
}

nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  padding: 0.95rem 1.2rem;
  background: rgba(247, 247, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(22, 33, 47, 0.08);
  transition: box-shadow var(--ease-fast), background-color var(--ease-fast);
}

nav.scrolled {
  background: rgba(247, 247, 245, 0.98);
  box-shadow: 0 6px 18px rgba(17, 24, 39, 0.08);
}

.nav-container {
  max-width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  text-decoration: none;
  padding: 0.38rem 0.62rem;
  border-radius: 0.7rem;
  border: 1px solid transparent;
  transition: border-color var(--ease-fast), background-color var(--ease-fast), transform var(--ease-fast);
}

.logo-text {
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-transform: uppercase;
  color: var(--ink);
}

.logo-subtitle {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

.logo:hover {
  border-color: var(--line-strong);
  background: #f5f9f8;
  transform: translateY(-1px);
}

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.6rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--ink-soft);
  font-size: 0.95rem;
  font-weight: 600;
  position: relative;
  transition: color var(--ease-fast);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.34rem;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--ease-fast);
}

.nav-links a:hover,
.nav-links .active {
  color: var(--accent-strong);
}

.nav-links a:hover::after,
.nav-links .active::after {
  transform: scaleX(1);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 0.35rem;
  border: none;
  background: transparent;
  padding: 0.25rem;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2.5px;
  border-radius: 999px;
  background: var(--ink);
}

main {
  margin-top: 82px;
}

.hero {
  width: min(var(--container), calc(100% - 2.5rem));
  margin: 1.6rem auto 4.2rem;
  border-radius: var(--radius-lg);
  padding: clamp(2.7rem, 1.6rem + 3.4vw, 5.1rem) clamp(1.2rem, 0.5rem + 2.5vw, 3.5rem);
  background: linear-gradient(145deg, var(--hero-start), var(--hero-end));
  color: var(--on-dark);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  right: -90px;
  top: -110px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0));
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: clamp(2.05rem, 1.4rem + 2.85vw, 3.35rem);
  line-height: 1.1;
  margin-bottom: 0.55rem;
  letter-spacing: -0.02em;
}

.hero .title {
  font-size: clamp(1.07rem, 0.8rem + 1.2vw, 1.43rem);
  color: rgba(243, 244, 246, 0.9);
  margin-bottom: 1.2rem;
  font-weight: 500;
}

.hero p {
  font-size: 1.03rem;
  color: rgba(243, 244, 246, 0.9);
  max-width: 66ch;
}

.cta-buttons {
  margin-top: 1.85rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 154px;
  padding: 0.74rem 1.35rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-size: 0.93rem;
  font-weight: 700;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), background-color var(--ease-fast), color var(--ease-fast), border-color var(--ease-fast);
}

.btn-primary {
  background: linear-gradient(120deg, var(--accent-strong), var(--accent));
  color: var(--on-dark);
  box-shadow: 0 10px 20px rgba(77, 122, 118, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 24px rgba(77, 122, 118, 0.34);
}

.btn-secondary {
  color: var(--on-dark);
  border-color: rgba(243, 244, 246, 0.45);
  background: rgba(255, 255, 255, 0.09);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  border-color: rgba(243, 244, 246, 0.72);
  background: rgba(255, 255, 255, 0.16);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 1.25rem;
}

.about-text,
.info-box,
.experience-content,
.skill-category,
.education-card,
.contact-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.about-text {
  padding: 1.7rem;
}

.about-text p {
  color: var(--ink-soft);
  font-size: 1rem;
}

.about-text p + p {
  margin-top: 0.95rem;
}

.info-box {
  padding: 1.45rem;
  background: linear-gradient(180deg, var(--surface-alt), var(--surface));
}

.info-box h3 {
  color: var(--ink);
  margin-bottom: 1rem;
  font-size: 1.06rem;
}

.info-items {
  display: grid;
  gap: 0.92rem;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.info-icon {
  font-size: 1.15rem;
  width: 1.65rem;
  text-align: center;
  flex-shrink: 0;
}

.info-content p {
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.info-content strong {
  color: var(--ink);
}

.experience-timeline {
  display: grid;
  gap: 0.95rem;
}

.experience-item {
  margin: 0;
}

.experience-content {
  padding: 1.2rem 1.25rem;
  border-color: var(--line);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid #a2a8b0;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast), background-color var(--ease-fast);
}

.experience-content:hover {
  transform: translateY(-1px);
  border-color: var(--line);
  border-left-color: var(--accent);
  background-color: var(--surface-hover);
  box-shadow: var(--shadow-md);
}

.experience-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.job-title {
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.35;
}

.company {
  margin-top: 0.12rem;
  color: var(--muted-strong);
  font-weight: 600;
}

.experience-meta {
  text-align: right;
  min-width: 170px;
  display: grid;
  gap: 0.35rem;
}

.date,
.location {
  color: var(--ink-soft);
  font-size: 0.82rem;
  line-height: 1.25;
  letter-spacing: 0.02em;
  font-weight: 600;
  padding: 0.28rem 0.55rem;
  background: var(--surface-alt);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.location {
  width: fit-content;
  justify-self: end;
}

.responsibilities {
  list-style: none;
  display: grid;
  gap: 0.35rem;
}

.responsibilities li {
  color: var(--ink-soft);
  position: relative;
  padding-left: 0;
  font-size: 0.94rem;
  line-height: 1.55;
}

.responsibilities li::before {
  content: "• ";
  position: static;
  color: var(--accent);
  font-weight: 600;
}

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

.skill-category {
  padding: 1.35rem;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast);
}

.skill-category:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: var(--shadow-md);
}

.skill-category h3 {
  color: var(--ink);
  margin-bottom: 0.85rem;
  font-size: 1.04rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.skill-category-icon {
  font-size: 1.08rem;
}

.skill-list {
  list-style: none;
  display: grid;
  gap: 0.52rem;
}

.skill-item {
  color: var(--ink-soft);
  display: inline-flex;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-alt);
  font-size: 0.95rem;
}

.skill-item::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent-strong);
  margin-right: 0.45rem;
  flex-shrink: 0;
}

.education-card {
  padding: 1.5rem;
  background: var(--surface-alt);
}

.education-card h3 {
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.degree {
  color: var(--muted-strong);
  font-weight: 700;
}

.institution {
  color: var(--ink-soft);
}

.graduation-date {
  margin-top: 0.32rem;
  color: var(--ink);
  font-weight: 600;
}

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

.blog-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast);
}

.blog-card:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: var(--shadow-md);
}

.blog-image {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--surface-alt);
  border-bottom: 1px solid var(--line);
}

.blog-body {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  flex: 1;
  padding: 1rem;
}

.blog-meta {
  display: inline-block;
  align-self: flex-start;
  width: fit-content;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-strong);
  font-weight: 700;
  background: rgba(95, 143, 138, 0.12);
  border: 1px solid rgba(95, 143, 138, 0.22);
  border-radius: 999px;
  padding: 0.22rem 0.5rem;
  margin-bottom: 0.65rem;
}

.blog-title {
  font-size: 1.02rem;
  color: var(--ink);
  line-height: 1.35;
  margin: 0;
}

.blog-excerpt {
  font-size: 0.92rem;
  color: var(--ink-soft);
  line-height: 1.55;
  margin: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.contact-item {
  text-align: left;
  padding: 1.45rem;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast);
}

.contact-item:hover {
  transform: translateY(-3px);
  border-color: var(--line);
  box-shadow: var(--shadow-md);
}

@media (hover: none) {
  .logo:hover,
  .btn-primary:hover,
  .btn-secondary:hover,
  .experience-content:hover,
  .skill-category:hover,
  .blog-card:hover,
  .contact-item:hover {
    transform: none;
    box-shadow: var(--shadow-sm);
  }
}

.contact-icon {
  width: 1.35rem;
  height: 1.35rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  margin-bottom: 0.3rem;
}

.contact-icon-svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.contact-label {
  color: var(--ink-soft);
  font-size: 0.84rem;
  margin-bottom: 0.3rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.contact-value {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  word-break: break-word;
}

.contact-value:hover {
  color: var(--accent-strong);
}

footer {
  margin-top: 3.3rem;
  background: var(--footer-bg);
  color: var(--on-dark);
  padding: 2.6rem 1rem;
}

footer p {
  text-align: center;
  color: rgba(243, 244, 246, 0.9);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.nav-links a:focus-visible,
.btn:focus-visible,
.logo:focus-visible,
.menu-toggle:focus-visible,
.contact-value:focus-visible {
  box-shadow: 0 0 0 4px rgba(95, 143, 138, 0.24);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 640ms var(--ease-med), transform 640ms var(--ease-med);
  will-change: opacity, transform;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

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

  .skill-item {
    width: 100%;
  }
}

@media (max-width: 768px) {
  nav {
    padding: 0.85rem 1rem;
  }

  .logo {
    padding: 0.26rem 0.45rem;
  }

  .logo-subtitle {
    display: none;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 1rem;
    width: min(84vw, 282px);
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    padding: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
  }

  .nav-links.active {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    width: calc(100% - 2rem);
    margin-top: 1rem;
    margin-bottom: 3.2rem;
  }

  .blog-image {
    height: 200px;
  }

  .experience-timeline {
    gap: 0.8rem;
  }

  .experience-header {
    flex-direction: column;
    gap: 0.45rem;
    padding-bottom: 0.6rem;
  }

  .experience-meta {
    text-align: left;
    min-width: 0;
  }

  .date,
  .location {
    width: fit-content;
  }

  .location {
    justify-self: start;
  }
}

@media (max-width: 560px) {
  .container {
    width: calc(100% - 1.5rem);
  }

  section {
    margin-bottom: 1.5rem;
  }

  .skills-grid,
  .blog-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .cta-buttons {
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .blog-image {
    height: 180px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0ms !important;
    scroll-behavior: auto !important;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}