/* 08-zen-minimal — Japanese zen minimal portfolio */
:root {
  --off-white: #F5F5F0;
  --charcoal: #2C2C2C;
  --accent: #C0392B;
  --muted: #6B6B6B;
  --line: rgba(44, 44, 44, 0.12);
  --font-serif: "Noto Serif SC", "Songti SC", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", sans-serif;
  --max-width: 720px;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  --transition: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 300;
  line-height: 2;
  color: var(--charcoal);
  background: var(--off-white);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--charcoal);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover, a:focus-visible {
  color: var(--accent);
}

a:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  background: var(--charcoal);
  color: var(--off-white);
  padding: var(--space-xs) var(--space-sm);
  z-index: 100;
}

.skip-link:focus { top: var(--space-sm); }

/* Header */
.site-header {
  padding: var(--space-lg) var(--space-md) var(--space-md);
  text-align: center;
}

.site-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.4em;
  margin: 0 0 var(--space-md);
  opacity: 0;
  animation: fadeUp 1.2s var(--transition) forwards;
}

.site-name a { color: inherit; }

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  opacity: 0;
  animation: fadeUp 1.2s 0.2s var(--transition) forwards;
}

.main-nav a {
  font-size: 0.8125rem;
  letter-spacing: 0.15em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

main {
  padding-bottom: var(--space-xl);
}

/* Hero */
.hero {
  text-align: center;
  padding: var(--space-xl) 0;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero-line {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 2.2;
  margin: 0;
  opacity: 0;
  animation: fadeUp 1.4s 0.4s var(--transition) forwards;
}

.hero-sub {
  margin-top: var(--space-lg);
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.2em;
  opacity: 0;
  animation: fadeUp 1.4s 0.7s var(--transition) forwards;
}

.divider {
  width: 1px;
  height: 48px;
  background: var(--line);
  margin: var(--space-lg) auto;
  opacity: 0;
  animation: fadeUp 1s 1s var(--transition) forwards;
}

/* Page title */
.page-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-align: center;
  margin: 0 0 var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--line);
}

/* Works grid */
.works-grid {
  display: grid;
  gap: var(--space-md);
}

@media (min-width: 540px) {
  .works-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.work-card {
  padding: var(--space-md);
  border: 1px solid var(--line);
  transition: border-color var(--transition), transform var(--transition);
}

.work-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.work-card:focus-within {
  border-color: var(--accent);
}

.work-number {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--muted);
  margin-bottom: var(--space-xs);
}

.work-card h2 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 400;
  margin: 0 0 var(--space-xs);
  letter-spacing: 0.05em;
}

.work-card h2 a {
  color: inherit;
}

.work-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.8;
}

.work-meta {
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}

/* Philosophy essays */
.essay {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--line);
}

.essay:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.essay h2 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  margin: 0 0 var(--space-sm);
}

.essay .subtitle {
  font-size: 0.8125rem;
  color: var(--muted);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-md);
}

.essay p {
  margin: 0 0 var(--space-sm);
  text-align: justify;
}

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

/* Footer */
.site-footer {
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--muted);
}

.footer-nav {
  margin-bottom: var(--space-sm);
}

.footer-nav a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  margin: 0 var(--space-sm);
  color: var(--muted);
}

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

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}