/*
  Palette
  --ink:    #2D3E50  darkest
  --steel:  #5D7385  medium
  --slate:  #A3B8C2  light
  --mist:   #E1E8ED  lightest
*/

:root {
  --ink: #2d3e50;
  --steel: #5d7385;
  --slate: #a3b8c2;
  --mist: #e1e8ed;
  --bg-base: var(--ink);
  --bg-glow-top: rgba(93, 115, 133, 0.35);
  --bg-glow-bottom: rgba(93, 115, 133, 0.12);
  --surface: rgba(93, 115, 133, 0.18);
  --surface-hover: rgba(93, 115, 133, 0.32);
  --surface-border: rgba(163, 184, 194, 0.25);
  --surface-border-hover: rgba(163, 184, 194, 0.45);
  --shadow-soft: rgba(45, 62, 80, 0.35);
  --divider: rgba(93, 115, 133, 0.35);
  --contact-border: rgba(163, 184, 194, 0.35);
  --font-sans: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

[data-theme="light"] {
  --ink: #f4f8fb;
  --steel: #5a6c7b;
  --slate: #2f4559;
  --mist: #1a2a38;
  --bg-base: #f4f8fb;
  --bg-glow-top: rgba(163, 184, 194, 0.42);
  --bg-glow-bottom: rgba(93, 115, 133, 0.22);
  --surface: rgba(163, 184, 194, 0.28);
  --surface-hover: rgba(163, 184, 194, 0.42);
  --surface-border: rgba(93, 115, 133, 0.35);
  --surface-border-hover: rgba(93, 115, 133, 0.5);
  --shadow-soft: rgba(93, 115, 133, 0.2);
  --divider: rgba(93, 115, 133, 0.3);
  --contact-border: rgba(93, 115, 133, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 1.25rem;
}

[data-nav-section] {
  scroll-margin-top: 1.25rem;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--mist);
  background-color: var(--bg-base);
  background-image: radial-gradient(
      ellipse 120% 80% at 50% -20%,
      var(--bg-glow-top),
      transparent 55%
    ),
    radial-gradient(
      ellipse 80% 50% at 100% 100%,
      var(--bg-glow-bottom),
      transparent 45%
    );
  -webkit-font-smoothing: antialiased;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 11rem) minmax(0, 38rem);
  gap: clamp(1.25rem, 4vw, 2.5rem);
  max-width: 52rem;
  margin: 0 auto 0 0;
  padding: clamp(2.5rem, 8vw, 5rem) clamp(0.75rem, 3vw, 1.5rem) 3rem
    clamp(1rem, 2vw, 1.75rem);
  align-items: start;
}

.wrap {
  min-width: 0;
}

.toc {
  position: sticky;
  top: 1.5rem;
}

.toc__nav {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.theme-toggle {
  margin: 0 0 0.55rem;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mist);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 999px;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  transition:
    color 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease;
}

.theme-toggle:hover {
  background: var(--surface-hover);
  border-color: var(--surface-border-hover);
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--slate);
  outline-offset: 2px;
}

.toc__link {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
  text-decoration: none;
  padding: 0.4rem 0 0.4rem 0.65rem;
  margin-left: -2px;
  border-left: 2px solid transparent;
  transition:
    color 0.2s ease,
    border-color 0.2s ease;
}

.toc__link:hover {
  color: var(--slate);
}

.toc__link.is-active {
  color: var(--mist);
  border-left-color: var(--slate);
}

.toc__link:focus-visible {
  outline: 2px solid var(--slate);
  outline-offset: 2px;
}

.intro {
  margin-bottom: 2.25rem;
}

.name {
  margin: 0 0 0.5rem;
  font-size: clamp(2rem, 6vw, 2.75rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--mist);
  text-shadow: 0 0 40px rgba(225, 232, 237, 0.08);
}

.about-lead {
  margin: 0 0 0.85rem;
  font-size: 1.0625rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--steel);
}

.contact {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.contact a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--contact-border);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.contact a:hover {
  color: var(--mist);
  border-color: var(--slate);
}

.contact__sep {
  margin: 0 0.5rem;
  color: var(--steel);
  user-select: none;
}

.section.about {
  padding-left: 0.85rem;
  border-left: 2px solid var(--steel);
}

.section.about .stack {
  color: var(--slate);
}

.block {
  margin-bottom: 2.25rem;
}

.section__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  opacity: 0.92;
}

.section__body {
  margin: 0;
  color: var(--slate);
}

.stack p {
  margin: 0 0 0.85rem;
}

.stack p:last-child {
  margin-bottom: 0;
}

.section__strong {
  font-weight: 600;
  color: var(--mist);
}

.list {
  margin: 0;
  padding-left: 1.15rem;
}

.list li {
  margin-bottom: 0.45rem;
}

.list li:last-child {
  margin-bottom: 0;
}

.list--tight li {
  margin-bottom: 0.3rem;
}

.projects {
  display: flex;
  flex-direction: column;
  gap: 1.35rem;
}

.project__title {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--mist);
}

.links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.link {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 1rem 1.15rem;
  text-decoration: none;
  color: var(--mist);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 6px;
  transition:
    background 0.25s ease,
    border-color 0.25s ease,
    transform 0.2s ease,
    box-shadow 0.25s ease;
}

.link:hover {
  background: var(--surface-hover);
  border-color: var(--surface-border-hover);
  transform: translateX(4px);
  box-shadow: 0 8px 24px var(--shadow-soft);
}

.link:focus-visible {
  outline: 2px solid var(--slate);
  outline-offset: 3px;
}

.link__label {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.link__hint {
  font-size: 0.8125rem;
  color: var(--slate);
  transition: color 0.2s ease;
}

.link:hover .link__hint {
  color: var(--mist);
  opacity: 0.9;
}

.footer {
  padding-top: 1.5rem;
  border-top: 1px solid var(--divider);
}

.footer__text {
  margin: 0;
  font-size: 0.875rem;
  font-family: var(--font-mono);
  color: var(--steel);
}

.fade-in {
  animation: fadeRaise 0.7s ease forwards;
  opacity: 0;
}

@keyframes fadeRaise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 52rem) {
  .layout {
    grid-template-columns: minmax(0, 9.5rem) minmax(0, 1fr);
    max-width: none;
  }
}

@media (max-width: 40rem) {
  .layout {
    grid-template-columns: 1fr;
    padding-top: clamp(1.75rem, 6vw, 2.5rem);
  }

  .toc {
    position: static;
  }

  .toc__nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem 0.75rem;
    padding-bottom: 1rem;
    margin-bottom: 0.25rem;
    border-bottom: 1px solid var(--divider);
  }

  .toc__link {
    padding: 0.25rem 0;
    margin-left: 0;
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .toc__link.is-active {
    border-left: none;
    border-bottom-color: var(--slate);
  }
}

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

  .fade-in {
    animation: none;
    opacity: 1;
  }

  .link {
    transition: none;
  }

  .link:hover {
    transform: none;
  }
}