/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Source+Serif+4:ital,wght@0,400;0,600;0,700;1,400&display=swap');

/* ── Design System ── */
:root {
  --color-bg:          #fafaf9;
  --color-surface:     #ffffff;
  --color-text:        #1a1a1a;
  --color-text-secondary: #555555;
  --color-muted:       #888888;
  --color-accent:      #2b6cb0;
  --color-accent-hover:#1e4e8c;
  --color-border:      #e2e2e0;

  --font-body:    'Inter', -apple-system, system-ui, sans-serif;
  --font-heading: 'Source Serif 4', Georgia, serif;
  --font-mono:    'SF Mono', 'Fira Code', 'Consolas', monospace;
}

[data-theme="dark"] {
  --color-bg:          #161618;
  --color-surface:     #1e1e20;
  --color-text:        #e4e4e3;
  --color-text-secondary: #a8a8a6;
  --color-muted:       #717170;
  --color-accent:      #63a1e8;
  --color-accent-hover:#8cb8ef;
  --color-border:      #2e2e30;
}

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
  background-color: var(--color-accent);
  color: #ffffff;
}

/* ── Full-viewport centering ── */
body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100dvh;
  padding: 2rem;
  animation: fadeInUp 0.4s ease-out both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Constellation canvas ── */
#constellation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
  transition: opacity 0.6s ease;
}

[data-theme="dark"] #constellation {
  opacity: 1;
}

/* ── Content layering (above canvas) ── */
.home {
  position: relative;
  z-index: 1;
}

/* ── Card ── */
.home-card {
  max-width: 420px;
  width: 100%;
  text-align: center;
}

/* ── Photo ── */
.home-photo {
  margin-bottom: 1.75rem;
}

.home-photo img {
  width: 130px;
  height: 130px;
  object-fit: cover;
  object-position: top;
  border-radius: 50%;
  filter: grayscale(15%);
  transition: filter 0.3s ease;
}

.home-photo img:hover {
  filter: grayscale(0%);
}

/* ── Name ── */
.home-name {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-text);
}

/* ── Tagline ── */
.home-tagline {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-muted);
  line-height: 1.6;
  margin-top: 0.75rem;
  margin-bottom: 1.75rem;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Navigation ── */
.home-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1.25rem;
  margin-bottom: 2.25rem;
}

.home-nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  padding: 0.25rem 0;
  position: relative;
  transition: color 0.2s ease;
}

.home-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--color-accent);
  transition: width 0.25s ease;
}

.home-nav a:hover {
  color: var(--color-accent);
}

.home-nav a:hover::after {
  width: 100%;
}

/* ── Contact list ── */
.home-contact {
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.home-contact li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.home-contact .icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  stroke: var(--color-muted);
}

.home-contact a {
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.home-contact a:hover {
  color: var(--color-accent);
}

.home-contact span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: -0.01em;
}

/* ── Philosophy quote ── */
.home-quote {
  margin-top: 1.75rem;
  max-width: 320px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.home-quote-text {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--color-muted);
}

.home-quote-attr {
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--color-muted);
  opacity: 0.75;
}

/* ── Dark mode toggle ── */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1rem;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--color-muted);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.3s ease;
  z-index: 100;
  line-height: 1;
}

.theme-toggle-icon {
  position: relative;
  width: 18px;
  height: 18px;
  display: block;
}

.theme-icon {
  position: absolute;
  inset: 0;
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.theme-icon-sun {
  opacity: 0;
  transform: scale(0.85) rotate(-20deg);
}

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

[data-theme="dark"] .theme-icon-sun {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

[data-theme="dark"] .theme-icon-moon {
  opacity: 0;
  transform: scale(0.85) rotate(20deg);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
}

/* ── Persistent Canon Link ── */
.canon-pocket-link {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  color: var(--color-muted);
  font-size: 0.76rem;
  font-weight: 500;
  line-height: 1;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.canon-pocket-link:hover,
.canon-pocket-link-active {
  color: var(--color-text);
  border-color: var(--color-text-secondary);
  text-decoration: none;
}

/* ── Focus states ── */
a:focus-visible,
button:focus-visible,
[tabindex]:not([tabindex="-1"]):focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── Mobile ── */
@media (max-width: 480px) {
  body {
    padding: 1.5rem 1.25rem;
    align-items: flex-start;
    padding-top: 15vh;
  }

  .home-name {
    font-size: 1.5rem;
  }

  .home-nav {
    gap: 0.35rem 0.45rem;
  }

  .home-nav a {
    min-height: 40px;
    padding: 0.45rem 0.55rem;
  }

  .home-photo img {
    width: 110px;
    height: 110px;
  }

  .canon-pocket-link {
    right: 0.75rem;
    bottom: 0.75rem;
  }
}

/* ── Page transitions ── */
body.page-exit {
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  body {
    animation: none;
  }

  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}