:root {
  --bg: #f8fafc;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: #ffffff;
  --surface-border: rgba(148, 163, 184, 0.22);
  --text: #0f172a;
  --muted: #475569;
  --accent: #f97316;
  --accent-strong: #ea580c;
  --accent-soft: rgba(249, 115, 22, 0.12);
  --line: rgba(148, 163, 184, 0.22);
  --shadow: 0 24px 60px rgba(15, 23, 42, 0.08);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --header-height: 78px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100svh;
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(249, 115, 22, 0.1), transparent 30%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.1), transparent 25%),
    var(--bg);
  transition: background-color 0.25s ease, color 0.25s ease;
}

body.is-loading,
body.is-drawer-open,
body.is-modal-open {
  overflow: hidden;
}

body.theme-dark {
  --bg: #020617;
  --surface: rgba(15, 23, 42, 0.82);
  --surface-strong: #0f172a;
  --surface-border: rgba(148, 163, 184, 0.14);
  --text: #e5eef9;
  --muted: #9fb1c7;
  --accent-soft: rgba(249, 115, 22, 0.18);
  --line: rgba(148, 163, 184, 0.16);
  --shadow: 0 24px 60px rgba(2, 6, 23, 0.42);
}

.loading-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at center, #ffffff 0%, #eff6ff 100%);
  z-index: 9999;
  transition: opacity 0.45s ease, visibility 0.45s ease;
}

body.theme-dark .loading-overlay {
  background: radial-gradient(circle at center, #0f172a 0%, #020617 100%);
}

.loading-overlay.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-text {
  position: relative;
  font-size: clamp(1.5rem, 2vw, 2rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text);
  overflow: hidden;
  padding: 0.4rem 0.8rem;
}

.loading-text::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: linear-gradient(115deg, transparent 20%, rgba(255, 255, 255, 0.95) 50%, transparent 80%);
  transform: translateX(-120%);
  animation: shine 1.45s linear infinite;
}

body.theme-dark .loading-text::before {
  background: linear-gradient(115deg, transparent 20%, rgba(255, 255, 255, 0.18) 50%, transparent 80%);
}

@keyframes shine {
  to {
    transform: translateX(120%);
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  backdrop-filter: blur(16px);
  background: rgba(248, 250, 252, 0.7);
  border-bottom: 1px solid transparent;
  transition: background-color 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

body.theme-dark .site-header {
  background: rgba(2, 6, 23, 0.72);
}

.site-header.is-scrolled {
  border-color: var(--line);
  box-shadow: 0 18px 38px rgba(15, 23, 42, 0.06);
}

.header-inner {
  max-width: 1160px;
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  margin-left: auto;
}

.desktop-nav a,
.drawer-nav a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.22s ease, transform 0.22s ease;
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible,
.drawer-nav a:hover,
.drawer-nav a:focus-visible,
.inline-links a:hover,
.inline-links a:focus-visible,
.contact-card:hover,
.contact-card:focus-visible {
  color: var(--text);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button {
  position: relative;
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.22s ease, background-color 0.22s ease, color 0.22s ease;
}

.icon-button:hover,
.icon-button:focus-visible,
.button:hover,
.button:focus-visible,
.portfolio-card:hover,
.portfolio-card:focus-visible,
.contact-card:hover,
.contact-card:focus-visible {
  transform: translateY(-2px);
}

.icon-button:focus-visible,
.button:focus-visible,
.portfolio-card:focus-visible,
.contact-card:focus-visible,
.drawer-nav a:focus-visible,
.desktop-nav a:focus-visible,
.inline-links a:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgba(249, 115, 22, 0.32);
  outline-offset: 4px;
}

.icon-button svg,
.back-to-top svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-icon {
  position: absolute;
  inset: 0;
  margin: auto;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.theme-icon-sun {
  opacity: 0;
  transform: scale(0.7) rotate(-25deg);
}

body.theme-dark .theme-icon-sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

body.theme-dark .theme-icon-moon {
  opacity: 0;
  transform: scale(0.7) rotate(25deg);
}

.mobile-only {
  display: none;
}

.site-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.4);
  z-index: 115;
}

.drawer-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: min(84vw, 320px);
  height: 100svh;
  transform: translateX(-100%);
  background: var(--surface-strong);
  border-right: 1px solid var(--line);
  box-shadow: var(--shadow);
  z-index: 130;
  transition: transform 0.28s ease;
  padding: 20px 18px 28px;
}

.drawer-menu.is-open {
  transform: translateX(0);
}

.drawer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.drawer-title {
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.drawer-nav {
  display: grid;
  gap: 6px;
}

.drawer-nav a {
  padding: 14px 16px;
  border-radius: 14px;
  background: transparent;
}

.drawer-nav a:hover,
.drawer-nav a:focus-visible {
  background: var(--accent-soft);
}

.page-content {
  max-width: 1160px;
  margin: 0 auto;
  padding: 40px 24px 96px;
}

.section {
  padding: 30px 0;
}

.section + .section {
  border-top: 1px solid var(--line);
}

.section-label {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-heading {
  margin-bottom: 24px;
}

.section-heading h2,
.intro-copy h1,
.intro-card h2 {
  margin: 0;
  line-height: 1.08;
}

.section-heading h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
}

body.has-motion [data-reveal] {
  opacity: 0;
  filter: blur(10px);
  transition:
    opacity 0.82s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms),
    transform 0.82s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms),
    filter 0.82s cubic-bezier(0.22, 1, 0.36, 1) var(--reveal-delay, 0ms),
    box-shadow 0.6s ease var(--reveal-delay, 0ms),
    border-color 0.6s ease var(--reveal-delay, 0ms);
  will-change: opacity, transform, filter;
}

body.has-motion [data-reveal].is-visible {
  opacity: 1;
  filter: blur(0);
  transform: none;
}

body.has-motion [data-reveal="fade-up"] {
  transform: translateY(28px);
}

body.has-motion [data-reveal="fade-right"] {
  transform: translateX(-36px);
}

body.has-motion [data-reveal="fade-left"] {
  transform: translateX(36px);
}

body.has-motion [data-reveal="pop"] {
  transform: translateY(24px) scale(0.94);
}

body.has-motion [data-reveal="lift"] {
  transform: translateY(30px) scale(0.98);
}

body.has-motion [data-reveal="timeline"] {
  transform: translateX(24px) translateY(18px);
}

body.has-motion .intro-copy.is-visible,
body.has-motion .intro-card.is-visible,
body.has-motion .content-card.is-visible,
body.has-motion .portfolio-card.is-visible,
body.has-motion .contact-card.is-visible,
body.has-motion .stat-card.is-visible {
  box-shadow: 0 28px 64px rgba(15, 23, 42, 0.12);
}

body.theme-dark.has-motion .intro-copy.is-visible,
body.theme-dark.has-motion .intro-card.is-visible,
body.theme-dark.has-motion .content-card.is-visible,
body.theme-dark.has-motion .portfolio-card.is-visible,
body.theme-dark.has-motion .contact-card.is-visible,
body.theme-dark.has-motion .stat-card.is-visible {
  box-shadow: 0 28px 64px rgba(2, 6, 23, 0.5);
}

body.has-motion .timeline-item .timeline-dot {
  opacity: 0;
  transform: scale(0.45);
  transition:
    opacity 0.65s cubic-bezier(0.22, 1, 0.36, 1) calc(var(--reveal-delay, 0ms) + 120ms),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1) calc(var(--reveal-delay, 0ms) + 120ms),
    box-shadow 0.65s ease calc(var(--reveal-delay, 0ms) + 120ms);
}

body.has-motion .timeline-item.is-visible .timeline-dot {
  opacity: 1;
  transform: scale(1);
}

body.has-motion .portfolio-card .portfolio-type,
body.has-motion .contact-card .contact-title,
body.has-motion .stat-card .stat-value {
  transition:
    opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1) calc(var(--reveal-delay, 0ms) + 120ms),
    transform 0.7s cubic-bezier(0.22, 1, 0.36, 1) calc(var(--reveal-delay, 0ms) + 120ms);
}

body.has-motion .portfolio-card .portfolio-type,
body.has-motion .contact-card .contact-title,
body.has-motion .stat-card .stat-value {
  opacity: 0;
  transform: translateY(10px);
}

body.has-motion .portfolio-card.is-visible .portfolio-type,
body.has-motion .contact-card.is-visible .contact-title,
body.has-motion .stat-card.is-visible .stat-value {
  opacity: 1;
  transform: translateY(0);
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(320px, 420px);
  gap: 28px;
  align-items: stretch;
}

.intro-copy,
.intro-card,
.content-card,
.timeline-card,
.portfolio-card,
.contact-card {
  border: 1px solid var(--surface-border);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.intro-copy {
  padding: 34px;
}

.intro-copy h1 {
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  max-width: 12ch;
}

.intro-text {
  margin: 18px 0 0;
  max-width: 60ch;
  color: var(--muted);
  line-height: 1.75;
  font-size: 1.02rem;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.stat-card {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid var(--surface-border);
  display: grid;
  gap: 4px;
}

body.theme-dark .stat-card {
  background: rgba(15, 23, 42, 0.5);
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 800;
}

.stat-label {
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.94rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  min-height: 48px;
  padding: 0 18px;
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.22s ease, background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

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

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

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

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--accent-soft);
}

.intro-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.intro-avatar {
  width: 118px;
  height: 118px;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  margin-bottom: 20px;
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.14);
}

.intro-card-body {
  display: grid;
  gap: 12px;
}

.intro-role {
  margin: 0;
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.intro-card h2 {
  font-size: 1.9rem;
}

.intro-quote {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.quick-list,
.tag-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.quick-list {
  display: grid;
  gap: 10px;
}

.quick-list li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
}

.quick-list li::before {
  content: "";
  position: absolute;
  top: 0.7em;
  left: 0;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--accent);
}

.inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.inline-links a {
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.content-card {
  padding: 24px;
}

.content-card h3 {
  margin: 0 0 12px;
  font-size: 1.18rem;
}

.content-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list li {
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--text);
  font-weight: 700;
  font-size: 0.92rem;
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 18px;
}

.timeline-item {
  position: relative;
  padding-left: 30px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: -18px;
  width: 2px;
  background: var(--line);
}

.timeline-item:last-child::before {
  display: none;
}

.timeline-dot {
  position: absolute;
  left: 0;
  top: 10px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px var(--accent-soft);
}

.timeline-card {
  padding: 22px;
}

.timeline-date {
  margin: 0 0 8px;
  color: var(--accent);
  font-weight: 800;
}

.timeline-card h3 {
  margin: 0 0 10px;
  font-size: 1.18rem;
}

.timeline-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

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

.portfolio-card,
.contact-card {
  width: 100%;
  padding: 24px;
  text-align: left;
  border: 1px solid var(--surface-border);
  color: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.22s ease, background-color 0.22s ease, border-color 0.22s ease;
}

.portfolio-card {
  background: var(--surface);
}

.portfolio-card:hover,
.portfolio-card:focus-visible,
.contact-card:hover,
.contact-card:focus-visible {
  border-color: rgba(249, 115, 22, 0.35);
  background: rgba(255, 255, 255, 0.92);
}

body.theme-dark .portfolio-card:hover,
body.theme-dark .portfolio-card:focus-visible,
body.theme-dark .contact-card:hover,
body.theme-dark .contact-card:focus-visible {
  background: rgba(15, 23, 42, 0.94);
}

.portfolio-type {
  display: inline-flex;
  margin-bottom: 14px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.portfolio-card h3 {
  margin: 0 0 10px;
  font-size: 1.25rem;
}

.portfolio-card p,
.contact-text {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.contact-title {
  display: block;
  margin-bottom: 8px;
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
}

.modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(15, 23, 42, 0.5);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.24s ease, visibility 0.24s ease;
  z-index: 140;
}

.modal.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.modal-content {
  position: relative;
  width: min(100%, 620px);
  border-radius: var(--radius-xl);
  background: var(--surface-strong);
  color: var(--text);
  border: 1px solid var(--surface-border);
  box-shadow: var(--shadow);
  padding: 28px;
}

.modal-close {
  position: absolute;
  top: 18px;
  right: 18px;
}

.modal-content h3 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.modal-content p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.modal-stack {
  margin-top: 16px !important;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--text) !important;
  font-weight: 700;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 50%;
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.22s ease, visibility 0.22s ease, transform 0.22s ease, background-color 0.22s ease;
  z-index: 110;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--accent-strong);
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .mobile-only {
    display: inline-flex;
  }

  .intro-grid,
  .about-grid,
  .portfolio-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

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

  .intro-copy h1 {
    max-width: none;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 72px;
  }

  .page-content {
    padding: 28px 16px 88px;
  }

  .header-inner {
    padding: 0 16px;
  }

  .intro-copy,
  .intro-card,
  .content-card,
  .timeline-card,
  .portfolio-card,
  .contact-card,
  .modal-content {
    border-radius: 22px;
  }

  .intro-copy {
    padding: 24px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .timeline-item {
    padding-left: 24px;
  }

  .timeline-dot {
    width: 16px;
    height: 16px;
  }

  .back-to-top {
    right: 16px;
    bottom: 16px;
  }
}

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

  body.has-motion [data-reveal] {
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
    transition: none !important;
  }

  body.has-motion .timeline-item .timeline-dot,
  body.has-motion .portfolio-card .portfolio-type,
  body.has-motion .contact-card .contact-title,
  body.has-motion .stat-card .stat-value {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}