:root {
  --bg: #f4f6f8;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;
  --bg-card-soft: #fafbfc;
  --border: #d7dee5;
  --border-strong: #b8c4d0;
  --accent: #0f5fa8;
  --accent-strong: #0f5fa8;
  --accent-soft: rgba(15, 95, 168, 0.08);
  --success: #1e7a4f;
  --warning: #9a6b00;
  --text-primary: #1b2733;
  --text-secondary: #4d5c6b;
  --text-muted: #6a7785;
  --shadow-lg: none;
  --shadow-md: none;
  --radius-xl: 14px;
  --radius-lg: 12px;
  --radius-md: 10px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

body::after {
  content: none;
}

a {
  color: inherit;
}

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

.container {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  width: min(1180px, calc(100% - 3rem));
  margin: 0.75rem auto 0;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(215, 222, 229, 0.8);
  overflow: hidden;
  transition:
    width 420ms cubic-bezier(0.16, 1, 0.3, 1),
    margin 420ms cubic-bezier(0.16, 1, 0.3, 1),
    border-radius 320ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 420ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 320ms ease;
  will-change: width, margin, transform;
}

header.scrolled {
  width: fit-content;
  max-width: min(560px, calc(100% - 1.5rem));
  margin: 0.5rem auto 0;
  top: 0.5rem;
  border-radius: 999px;
  transform: none;
  box-shadow: 0 18px 40px rgba(27, 39, 51, 0.12);
}

nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  transition: padding 180ms ease, min-height 180ms ease;
}

header.scrolled nav {
  min-height: 56px;
  padding: 0.35rem 0.85rem;
  justify-content: center;
}

header.scrolled .logo {
  display: none;
}

header.scrolled .nav-links {
  justify-content: center;
  transform: translateX(8px);
}

.logo {
  font-size: 0.98rem;
  letter-spacing: 0;
  text-transform: none;
  font-weight: 700;
  color: var(--text-primary);
  user-select: none;
  white-space: nowrap;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.nav-avatar {
  display: none;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--border);
  box-shadow: 0 6px 14px rgba(27, 39, 51, 0.12);
  flex: 0 0 auto;
}

.menu-toggle {
  display: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.2rem;
}

.nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  text-decoration: none;
  color: var(--text-secondary);
  border: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

header.scrolled .nav-links a {
  padding: 0.55rem 0.8rem;
}

.nav-links a:hover {
  color: var(--text-primary);
  border-color: rgba(15, 95, 168, 0.14);
  background: rgba(15, 95, 168, 0.05);
}

.hero {
  display: block;
  align-items: center;
  padding: 3rem 0 2rem;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 16ch;
}

.hero-content p {
  margin: 1rem 0 0;
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 60ch;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.9rem 1.15rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover {
  transform: none;
}

.btn-primary {
  color: #ffffff;
  background: var(--accent);
}

.btn-outline {
  color: var(--text-primary);
  border-color: var(--border);
  background: #ffffff;
}

.btn-outline:hover {
  border-color: var(--border);
  background: #f7f9fb;
}

.btn-sm {
  padding: 0.72rem 0.95rem;
  font-size: 0.94rem;
}

section {
  padding: 2.5rem 0;
}

.section-title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  letter-spacing: 0;
}

.section-title::after {
  content: none;
}

section>p {
  margin: 0 0 1.5rem;
  max-width: 60ch;
  color: var(--text-secondary);
}

.experience-container {
  max-width: 760px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.experience-card {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
}

.experience-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.75rem;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.experience-company {
  font-size: 1.05rem;
  font-weight: 700;
}

.experience-date {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.experience-summary {
  margin: 0;
  color: var(--text-secondary);
}

.experience-highlights {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
}

.experience-highlights li+li {
  margin-top: 0.35rem;
}

.projects-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 8px;
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: none;
  transition: none;
}

.project-content {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  padding: 1rem 1.1rem 1.1rem;
}

.project-card:hover {
  transform: none;
  border-color: var(--border);
  background: #ffffff;
}

.project-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #f2f4f7;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}


.project-status {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  align-self: flex-start;
  padding: 0.3rem 0.6rem;
  border-radius: 8px;
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: none;
}

.project-status.complete {
  color: #1e7a4f;
  background: #edf8f2;
  border: 1px solid #cfe9da;
}

.project-status.in-development {
  color: #0f5fa8;
  background: #edf4fb;
  border: 1px solid #c9ddee;
}

.project-description {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.55;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.55rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f8fafc;
  color: var(--text-primary);
  font-size: 0.76rem;
}

.project-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.1rem;
}

.about-container {
  max-width: 1000px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(280px, 30vw, 380px);
  gap: 4.5rem;
  align-items: start;
}

.about-content {
  padding-top: 0;
}

.about-name {
  margin: 0 0 0.75rem;
  color: var(--text-primary);
  font-size: 1.05rem;
  font-weight: 700;
}

.about-photo {
  width: 100%;
  max-width: 380px;
  justify-self: end;
  margin-left: auto;
}

.about-photo img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #ffffff;
}

.about-text {
  color: var(--text-secondary);
  margin: 0 0 1rem;
}

.skill-title {
  margin: 1.1rem 0 0.5rem;
  font-size: 0.95rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-primary);
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill {
  display: inline-flex;
  align-items: center;
  padding: 0.52rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #ffffff;
  color: var(--text-primary);
  font-weight: 600;
}

.timeline {
  position: relative;
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  background: var(--border);
}

.timeline-item {
  position: relative;
  width: 50%;
  padding: 0 2rem 2rem;
}

.timeline-item.left {
  margin-right: auto;
  text-align: right;
}

.timeline-item.right {
  margin-left: auto;
  text-align: left;
}

.timeline-item::after {
  content: '';
  position: absolute;
  top: 1.08rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #111111;
  border: none;
  box-shadow: none;
}

.timeline-item.left::after {
  right: -5px;
}

.timeline-item.right::after {
  left: -5px;
}

.timeline-content {
  padding: 1rem 1rem 1.05rem;
  border-radius: 10px;
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: none;
}

.timeline-date {
  color: var(--text-muted);
  text-transform: none;
  letter-spacing: 0.03em;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.55rem;
}

.timeline-title {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.timeline-text {
  margin: 0;
  color: var(--text-secondary);
}

.contact-section {
  padding-bottom: 3.5rem;
}

.contact-content {
  position: relative;
  padding: 1rem;
  border-radius: 10px;
  background: #ffffff;
  border: 1px solid var(--border);
  box-shadow: none;
  overflow: hidden;
}

.contact-content::before {
  content: none;
}

.contact-content>* {
  position: relative;
  z-index: 1;
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--border);
  transition: none;
}

.contact-link:hover {
  transform: none;
  border-color: var(--border);
  background: #f8fafc;
}

.contact-icon {
  font-size: 1.2rem;
  color: var(--accent);
}

footer {
  padding: 1.5rem 1rem 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

  .about-container {
    grid-template-columns: minmax(0, 1fr) clamp(140px, 22vw, 220px);
    gap: 1.5rem;
  }

  .about-photo {
    width: 100%;
    max-width: 220px;
    justify-self: end;
    align-self: start;
    margin-top: 0;
  }

  .timeline::before {
    left: 1rem;
  }

  .timeline-item {
    width: 100%;
    padding-left: 2.5rem;
    padding-right: 0;
    margin: 0;
    text-align: left;
  }

  .timeline-item.left::after,
  .timeline-item.right::after {
    left: 0.42rem;
    right: auto;
  }

  .timeline {
    gap: 0.65rem;
  }

  .contact-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  nav {
    min-height: 70px;
    position: relative;
    z-index: 2;
  }

  header,
  header.scrolled {
    width: calc(100% - 2rem);
    margin: 0.5rem auto 0;
    border-radius: 18px;
    transform: none;
    max-width: none;
    overflow: visible;
  }

  header.scrolled nav {
    min-height: 70px;
    padding: 0.75rem 1rem;
    justify-content: space-between;
  }

  header.scrolled .logo {
    display: block;
  }

  .nav-brand {
    gap: 0.45rem;
  }

  .nav-avatar {
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 8px;
  }

  header.scrolled .nav-links {
    justify-content: center;
    align-items: center;
  }

  .menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    cursor: pointer;
    position: absolute;
    top: 50%;
    right: 0.95rem;
    transform: translateY(-50%);
    z-index: 60;
  }

  .menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 999px;
    background: var(--text-primary);
    transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1), opacity 180ms ease, width 260ms cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: left center;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg);
    width: 110%;
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-8px);
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg);
    width: 110%;
  }

  .nav-links {
    position: fixed;
    top: -1px;
    left: 50%;
    width: 100vw;
    height: calc(100dvh + 1px);
    min-height: calc(100dvh + 1px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.9rem;
    padding: 1.5rem 1.25rem;
    background:
      radial-gradient(circle at top, rgba(24, 182, 216, 0.12), transparent 30%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(244, 246, 248, 0.99));
    backdrop-filter: blur(18px);
    border: 0;
    border-radius: 0;
    box-shadow: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: none;
    margin-left: -50vw;
    transform-origin: center;
    transition:
      opacity 280ms ease,
      transform 420ms cubic-bezier(0.16, 1, 0.3, 1),
      visibility 0s linear 420ms;
    z-index: 40;
  }

  .nav-links.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: none;
    justify-content: center;
    align-items: center;
    transition:
      opacity 280ms ease,
      transform 420ms cubic-bezier(0.16, 1, 0.3, 1),
      visibility 0s linear 0s;
  }

  .nav-links a {
    width: min(100%, 360px);
    justify-content: center;
    padding: 1.25rem 1.4rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(215, 222, 229, 0.95);
    border-radius: 18px;
    box-shadow: 0 12px 24px rgba(27, 39, 51, 0.1);
    font-size: 1.05rem;
    font-weight: 700;
    opacity: 0;
    transform: translateY(14px);
    text-align: center;
  }

  .nav-links.active a {
    opacity: 1;
    transform: translateY(0);
  }

  .nav-links.active a:nth-child(1) {
    transition-delay: 0s;
  }

  .nav-links.active a:nth-child(2) {
    transition-delay: 0s;
  }

  .nav-links.active a:nth-child(3) {
    transition-delay: 0s;
  }

  .nav-links.active a:nth-child(4) {
    transition-delay: 0s;
  }

  .about-photo {
    display: none;
  }

  .about-container {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.9rem;
  }

  .about-content {
    width: 100%;
  }

  .hero-links .btn {
    width: 100%;
  }

  section {
    padding: 2.2rem 0;
  }

  .contact-content {
    padding: 1rem;
  }
}