:root {
  --paper: #eef2f0;
  --paper-deep: #dde5e2;
  --paper-warm: #ebe3d4;
  --ink: #243038;
  --ink-soft: rgba(36, 48, 56, 0.72);
  --ink-faint: rgba(36, 48, 56, 0.7);
  --sea: #5a8f97;
  --sea-deep: #3a6870;
  --sea-light: rgba(90, 143, 151, 0.18);
  --sage: rgba(118, 148, 118, 0.22);
  --blush: rgba(196, 160, 154, 0.2);
  --focus: #3a6870;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --border: rgba(36, 48, 56, 0.1);
  --border-hover: rgba(58, 104, 112, 0.35);
  --card-bg: rgba(255, 255, 255, 0.55);
  --card-bg-hover: rgba(255, 255, 255, 0.78);
  --mist-core: rgba(244, 247, 246, 0.55);
  --mist-edge: rgba(244, 247, 246, 0.18);
  --header-bg: rgba(238, 242, 240, 0.78);
  --paper-canvas: #eef2f0;
}

body.is-night {
  color-scheme: dark;
  --paper: #1a2228;
  --paper-deep: #12181d;
  --paper-warm: #22282e;
  --ink: #e4ebe8;
  --ink-soft: rgba(228, 235, 232, 0.78);
  --ink-faint: rgba(228, 235, 232, 0.72);
  --sea: #6a9aa0;
  --sea-deep: #8eb4ba;
  --sea-light: rgba(106, 154, 160, 0.2);
  --sage: rgba(118, 148, 118, 0.16);
  --blush: rgba(196, 160, 154, 0.12);
  --focus: #8eb4ba;
  --border: rgba(228, 235, 232, 0.12);
  --border-hover: rgba(142, 180, 186, 0.4);
  --card-bg: rgba(26, 34, 40, 0.55);
  --card-bg-hover: rgba(34, 44, 52, 0.78);
  --mist-core: rgba(18, 24, 29, 0.55);
  --mist-edge: rgba(18, 24, 29, 0.2);
  --header-bg: rgba(18, 24, 29, 0.82);
  --paper-canvas: #1a2228;
}

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

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Sora", system-ui, sans-serif;
  font-weight: 300;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.9s var(--ease), color 0.7s ease;
}

#landscape {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  pointer-events: none;
}

.landscape-veil {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 110% 70% at 50% 18%, color-mix(in srgb, var(--paper) 42%, transparent) 0%, color-mix(in srgb, var(--paper) 12%, transparent) 48%, transparent 72%),
    linear-gradient(
      to bottom,
      color-mix(in srgb, var(--paper) 62%, transparent) 0%,
      color-mix(in srgb, var(--paper) 28%, transparent) 20%,
      color-mix(in srgb, var(--paper) 16%, transparent) 46%,
      color-mix(in srgb, var(--paper) 28%, transparent) 72%,
      color-mix(in srgb, var(--paper) 72%, transparent) 100%
    );
  transition: opacity 1.4s var(--ease), background 0.9s var(--ease);
}

body.landscape-ready .landscape-veil {
  opacity: 0.78;
}

.grain {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.055;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 1rem;
  z-index: 100;
  padding: 0.5rem 1rem;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
}

.wrap {
  width: min(100%, 52rem);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2.75rem);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  animation: header-in 1s var(--ease) both;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.brand {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: 1.35rem;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--ink);
  animation: brand-breathe 7s ease-in-out infinite;
}

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

.nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.85rem 1.35rem;
}

.nav a {
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 0.15rem;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--sea-deep);
}

.atmosphere {
  position: relative;
  margin-left: 0.05rem;
  display: flex;
  align-items: center;
  align-self: center;
}

.atmosphere-toggle {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--ink-faint);
  opacity: 0.38;
  padding: 0;
  margin: 0 0 0.15rem;
  width: 1.1rem;
  height: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 999px;
  transition: opacity 0.3s ease, color 0.3s ease, background 0.3s ease;
}

.atmosphere-toggle:hover,
.atmosphere-toggle:focus-visible,
.atmosphere-toggle[aria-expanded="true"] {
  opacity: 0.88;
  color: var(--ink-soft);
  outline: none;
}

.atmosphere-toggle:focus-visible {
  box-shadow: 0 0 0 2px var(--focus);
}

.atmosphere-icon {
  display: block;
  width: 0.82rem;
  height: 0.82rem;
  flex-shrink: 0;
}

.atmosphere-menu {
  position: absolute;
  top: calc(100% + 0.55rem);
  right: 0;
  z-index: 20;
  width: 10.5rem;
  padding: 0.7rem 0.75rem 0.8rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 28px rgba(18, 24, 29, 0.12);
}

.atmosphere-menu[hidden] {
  display: none;
}

.atmosphere-label {
  display: block;
  margin: 0 0 0.35rem;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  opacity: 0.85;
}

.atmosphere-row + .atmosphere-label {
  margin-top: 0.7rem;
}

.atmosphere-row {
  display: flex;
  gap: 0.35rem;
}

.atmosphere-chip {
  flex: 1;
  appearance: none;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--paper) 70%, transparent);
  color: var(--ink-faint);
  font-family: inherit;
  font-size: 0.72rem;
  padding: 0.35rem 0.4rem;
  border-radius: 7px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.atmosphere-chip[aria-pressed="true"] {
  color: var(--ink);
  border-color: var(--border-hover);
  background: color-mix(in srgb, var(--paper) 92%, var(--sea) 8%);
}

.atmosphere-chip:hover,
.atmosphere-chip:focus-visible {
  color: var(--ink);
  outline: none;
}

.atmosphere-select {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  color: var(--ink-soft);
  font-family: inherit;
  font-size: 0.74rem;
  padding: 0.4rem 0.5rem;
  border-radius: 7px;
}

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

body.is-night .atmosphere-menu {
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35);
}

@media (max-width: 639px) {
  .nav {
    gap: 0.35rem 0.75rem;
  }

  .nav a {
    font-size: 0.875rem;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.15rem;
  }

  .atmosphere-toggle {
    width: 2.5rem;
    height: 2.5rem;
    margin: 0;
  }

  .contact-list a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

.main {
  position: relative;
  z-index: 3;
}

.section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
  opacity: 0;
  transform: translateY(1rem);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.section.is-inview,
.section.bio {
  opacity: 1;
  transform: none;
}

.section.bio {
  transition-delay: 0.05s;
}

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

.phase {
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0 0 0.75rem;
}

.hero-name {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: clamp(2.5rem, 8vw, 4rem);
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0 0 0.5rem;
  color: var(--ink);
  animation: rise 1.1s var(--ease) both;
}

.hero-title {
  font-size: 0.95rem;
  color: var(--sea-deep);
  margin: 0 0 1.25rem;
  letter-spacing: 0.04em;
  animation: rise 1.1s var(--ease) 0.08s both;
}

.bio-summary {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0 0 1.5rem;
  animation: rise 1.1s var(--ease) 0.12s both;
}

.bio-mission {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  animation: rise 1.1s var(--ease) 0.16s both;
}

.bio-mission p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-faint);
}

.section-title {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  letter-spacing: -0.03em;
  margin: 0 0 2rem;
  color: var(--ink);
}

.contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
}

.projects-root {
  display: flex;
  flex-direction: column;
  gap: 2.75rem;
}

.project-noscript {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

.project-noscript a {
  color: var(--ink);
}

.category-block {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}

.category-block.is-visible {
  opacity: 1;
  transform: none;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.category-icon {
  font-size: 1.1rem;
  line-height: 1;
}

.category-label {
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin: 0;
}

.category-desc {
  font-size: 0.85rem;
  color: var(--ink-faint);
  margin: 0.35rem 0 0;
}

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

@media (min-width: 640px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.25rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  opacity: 0;
  transform: translateY(14px) scale(0.98);
  transition:
    opacity 0.85s var(--ease),
    transform 0.85s var(--ease),
    border-color 0.3s var(--ease),
    background 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}

.project-card.is-visible {
  opacity: 1;
  transform: none;
}

.project-card:hover {
  border-color: var(--border-hover);
  background: var(--card-bg-hover);
  box-shadow: 0 12px 32px rgba(58, 104, 112, 0.1);
  transform: translateY(-2px);
}

.project-card-header {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
}

.project-title-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.65rem;
  min-width: 0;
}

.project-badge {
  font-size: 0.62rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a5a52;
  background: rgba(196, 140, 130, 0.14);
  border: 1px solid rgba(154, 96, 88, 0.28);
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
  white-space: nowrap;
}

.project-badge--soon {
  color: var(--sea-deep);
  background: var(--sea-light);
  border-color: rgba(58, 104, 112, 0.3);
}

.project-badge--alpha {
  color: #5a6a42;
  background: rgba(118, 148, 118, 0.18);
  border-color: rgba(90, 106, 66, 0.3);
}

.project-badge--version {
  color: var(--sea-deep);
  background: rgba(58, 104, 112, 0.1);
  border-color: rgba(58, 104, 112, 0.28);
}

.project-badge--version-planned {
  color: #6a5a42;
  background: rgba(180, 150, 90, 0.14);
  border-color: rgba(140, 110, 60, 0.28);
}

.project-card--deprecated {
  opacity: 0.92;
  border-style: dashed;
}

.project-card--coming-soon {
  opacity: 0.96;
  border-style: dashed;
}

.project-card--alpha {
  border-style: dashed;
}

.project-note {
  font-size: 0.8rem;
  color: #8a5a52;
  margin: 0;
  font-style: italic;
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0.15rem 0 0;
}

.project-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.45rem 0.95rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 400;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(36, 48, 56, 0.05);
  transition:
    border-color 0.25s ease,
    background 0.25s ease,
    color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s var(--ease);
}

.project-cta:hover,
.project-cta:focus-visible {
  color: var(--sea-deep);
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 18px rgba(58, 104, 112, 0.1);
  transform: translateY(-1px);
}

.project-icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  line-height: 1;
  border-radius: 10px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border);
  box-shadow: 0 2px 8px rgba(36, 48, 56, 0.06);
}

.project-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 10px;
}

.project-name {
  font-family: "Fraunces", Georgia, serif;
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  margin: 0;
  line-height: 1.25;
}

.project-name a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.project-name a:hover {
  color: var(--sea-deep);
  border-bottom-color: var(--sea-deep);
}

.project-desc {
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 0;
  flex: 1;
}

.contact-list a {
  font-size: 0.85rem;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.contact-list a:hover {
  color: var(--sea-deep);
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.75);
}

.loading,
.error {
  color: var(--ink-faint);
  font-size: 0.9rem;
}

.error {
  color: #9a6058;
}

.site-footer {
  position: relative;
  z-index: 3;
  border-top: 1px solid var(--border);
  padding: 1.5rem 0 2rem;
}

.footer-text {
  margin: 0;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}

.footer-text a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.footer-text a:hover {
  color: var(--sea-deep);
  border-bottom-color: var(--sea-deep);
}

.footer-sep {
  margin: 0 0.5rem;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes header-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes brand-breathe {
  0%,
  100% {
    letter-spacing: -0.03em;
    opacity: 1;
  }
  50% {
    letter-spacing: -0.01em;
    opacity: 0.88;
  }
}

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

  .brand,
  .hero-name,
  .hero-title,
  .bio-summary,
  .bio-mission,
  .site-header,
  .category-block,
  .project-card,
  .section,
  .project-cta {
    animation: none;
    transition: none;
    opacity: 1;
    transform: none;
  }
}