/* ============================================================
   Wake Insomnia — editorial night theme
   Design tokens, fluid type, accessible contrast, no dependencies
   ============================================================ */

:root {
  --bg: #0b0f18;
  --bg-soft: #101725;
  --surface: #121a2a;
  --surface-2: #172135;
  --ink: #f1ebe0;
  --muted: #a7b0be;
  --faint: #78839a;
  --accent: #e2aa4d;
  --accent-ink: #1a1206;
  --accent-soft: rgba(226, 170, 77, 0.13);
  --line: rgba(241, 235, 224, 0.13);
  --line-strong: rgba(241, 235, 224, 0.24);

  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --step--1: clamp(0.76rem, 0.73rem + 0.15vw, 0.86rem);
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  --step-1: clamp(1.18rem, 1.08rem + 0.5vw, 1.4rem);
  --step-2: clamp(1.5rem, 1.28rem + 1vw, 2rem);
  --step-3: clamp(2rem, 1.55rem + 2.2vw, 3rem);
  --step-4: clamp(2.7rem, 1.9rem + 4vw, 5rem);

  --space-2xs: clamp(0.3rem, 0.25rem + 0.2vw, 0.45rem);
  --space-xs: clamp(0.55rem, 0.45rem + 0.4vw, 0.8rem);
  --space-sm: clamp(0.85rem, 0.7rem + 0.6vw, 1.15rem);
  --space-md: clamp(1.2rem, 1rem + 0.9vw, 1.8rem);
  --space-lg: clamp(1.8rem, 1.4rem + 1.6vw, 2.8rem);
  --space-xl: clamp(2.6rem, 2rem + 2.6vw, 4.2rem);
  --space-2xl: clamp(3.5rem, 2.6rem + 4vw, 6.5rem);

  --radius: 14px;
  --radius-sm: 8px;
  --max: 76rem;
  --max-read: 44rem;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --duration: 260ms;
}

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 620px at 78% -12%, #1b2a46 0%, transparent 62%),
    radial-gradient(900px 500px at 12% 8%, #182237 0%, transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* subtle paper grain, pure CSS */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.018) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.012) 0 1px, transparent 1px 4px);
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
  transition: color var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

a:hover {
  color: #f1c477;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top 160ms var(--ease);
}

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

/* ---------- header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.1rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--line);
  background: rgba(11, 15, 24, 0.78);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.brand {
  font-family: var(--font-serif);
  font-size: var(--step-0);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  color: var(--accent);
}

.site-header nav {
  display: flex;
  gap: clamp(0.8rem, 2.2vw, 1.8rem);
  flex-wrap: wrap;
}

.site-header nav a {
  font-size: var(--step--1);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
}

.site-header nav a:hover {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- shared layout ---------- */

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
}

.kicker,
.meta {
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.kicker {
  margin: 0 0 var(--space-md);
}

.meta {
  margin: 0 0 var(--space-xs);
  color: var(--faint);
}

.lead {
  max-width: 40rem;
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.55;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: var(--step--1);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 0.3rem;
}

.text-link:hover {
  border-bottom-color: var(--accent);
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: var(--space-2xl) 0 var(--space-xl);
  max-width: 62rem;
}

.hero h1 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-serif);
  font-size: var(--step-4);
  font-weight: 400;
  line-height: 1.03;
  letter-spacing: -0.02em;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.75rem 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform var(--duration) var(--ease), background var(--duration) var(--ease),
    border-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

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

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
}

.button-primary:hover {
  background: #efbf6a;
  color: var(--accent-ink);
}

.hero-moon {
  position: absolute;
  top: 2.2rem;
  right: 2%;
  width: clamp(8rem, 18vw, 15rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 32%, #f7e6c1 0%, #e2aa4d 38%, #9a6a24 78%, #4a3210 100%);
  box-shadow:
    0 0 70px rgba(226, 170, 77, 0.18),
    0 0 160px rgba(226, 170, 77, 0.08);
  opacity: 0.9;
  pointer-events: none;
}

.hero-moon::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 68% 22%, rgba(11, 15, 24, 0.55) 0 18%, transparent 19%),
    radial-gradient(circle at 30% 72%, rgba(11, 15, 24, 0.28) 0 12%, transparent 13%);
}

.hero-moon {
  animation: moon-drift 18s ease-in-out infinite alternate;
}

@keyframes moon-drift {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(0, 14px, 0);
  }
}

/* ---------- feature ---------- */

.feature {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr;
  gap: var(--space-xl);
  align-items: stretch;
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.feature h2 {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-serif);
  font-size: var(--step-3);
  font-weight: 400;
  line-height: 1.12;
}

.feature h2 a {
  color: var(--ink);
  text-decoration: none;
}

.feature h2 a:hover {
  color: var(--accent);
}

.feature-copy p {
  max-width: 38rem;
  color: var(--muted);
}

.feature-art {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 17rem;
  padding: var(--space-lg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 70% 20%, rgba(226, 170, 77, 0.16), transparent 55%),
    linear-gradient(160deg, #162033, #0d1320);
  overflow: hidden;
}

.feature-art::after {
  content: "";
  position: absolute;
  right: -3rem;
  bottom: -3rem;
  width: 12rem;
  height: 12rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
}

.feature-time {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 4vw, 3.6rem);
  letter-spacing: 0.04em;
  color: var(--accent);
}

.feature-line {
  display: block;
  height: 1px;
  margin: auto 0;
  background: linear-gradient(90deg, var(--line-strong), transparent);
}

.feature-note {
  max-width: 12rem;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: var(--step--1);
  font-style: italic;
}

/* ---------- journal grid ---------- */

.journal {
  padding: var(--space-xl) 0 var(--space-lg);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-lg);
}

.section-head h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--step-2);
  font-weight: 400;
}

.section-note {
  margin: 0;
  color: var(--faint);
  font-size: var(--step--1);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr));
  gap: var(--space-md);
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(23, 33, 53, 0.55), rgba(13, 19, 32, 0.35));
  transition: transform var(--duration) var(--ease), border-color var(--duration) var(--ease),
    background var(--duration) var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  left: var(--space-lg);
  right: var(--space-lg);
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent 70%);
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  background: linear-gradient(180deg, rgba(26, 38, 61, 0.75), rgba(13, 19, 32, 0.45));
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  margin: 0 0 var(--space-xs);
  font-family: var(--font-serif);
  font-size: var(--step-1);
  font-weight: 400;
  line-height: 1.25;
}

.card h3 a {
  color: var(--ink);
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--accent);
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: var(--step--1);
  line-height: 1.6;
}

/* ---------- start here ---------- */

.start-here {
  padding: var(--space-xl) var(--space-lg);
  margin: var(--space-lg) 0 var(--space-xl);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 12% 10%, rgba(226, 170, 77, 0.08), transparent 45%),
    var(--surface);
}

.start-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
  gap: var(--space-lg);
}

.start-number {
  display: block;
  margin-bottom: var(--space-xs);
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  color: var(--accent);
}

.start-item h3 {
  margin: 0 0 var(--space-2xs);
  font-family: var(--font-serif);
  font-size: var(--step-1);
  font-weight: 400;
}

.start-item p {
  margin: 0;
  color: var(--muted);
  font-size: var(--step--1);
}

.start-cta {
  margin: var(--space-lg) 0 0;
}

/* ---------- manifesto ---------- */

.manifesto {
  max-width: 52rem;
  margin: 0 auto;
  padding: var(--space-xl) 0 var(--space-2xl);
  text-align: center;
}

.manifesto blockquote {
  margin: 0 0 var(--space-md);
}

.manifesto blockquote p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: var(--step-3);
  line-height: 1.25;
  font-style: italic;
  color: var(--ink);
}

.manifesto-note {
  margin: 0;
  color: var(--faint);
  font-size: var(--step--1);
}

/* ---------- article ---------- */

.article-header {
  max-width: var(--max-read);
  margin: 0 auto;
  padding: var(--space-xl) 0 var(--space-lg);
}

.article-header h1 {
  margin: 0 0 var(--space-sm);
  font-family: var(--font-serif);
  font-size: var(--step-3);
  font-weight: 400;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

.article-deck {
  margin: 0;
  color: var(--muted);
  font-size: var(--step-1);
  line-height: 1.55;
}

.article-body {
  max-width: var(--max-read);
  margin: 0 auto;
  padding-bottom: var(--space-2xl);
}

.article-body > p {
  margin: 0 0 var(--space-md);
}

.article-body h2 {
  margin: var(--space-xl) 0 var(--space-sm);
  font-family: var(--font-serif);
  font-size: var(--step-2);
  font-weight: 400;
  line-height: 1.2;
}

.article-body blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  border-left: 2px solid var(--accent);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: var(--step-1);
  font-style: italic;
}

.article-body ul,
.article-body ol {
  margin: 0 0 var(--space-md);
  padding-left: 1.3rem;
  color: var(--muted);
}

.article-body li {
  margin-bottom: var(--space-2xs);
}

.article-body hr {
  margin: var(--space-xl) 0;
  border: 0;
  border-top: 1px solid var(--line);
}

.article-foot {
  max-width: var(--max-read);
  margin: 0 auto var(--space-2xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: var(--step--1);
}

.article-foot a {
  color: var(--accent);
}

/* reading progress */
.progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: var(--accent);
  z-index: 80;
  transition: width 80ms linear;
}

/* ---------- diary table ---------- */

.table-wrap {
  overflow-x: auto;
  margin: var(--space-md) 0 var(--space-lg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

table.diary {
  width: 100%;
  min-width: 54rem;
  border-collapse: collapse;
  font-size: var(--step--1);
}

table.diary th,
table.diary td {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  padding: 0.7rem 0.65rem;
  text-align: left;
  vertical-align: top;
  height: 2.2rem;
}

table.diary th:last-child,
table.diary td:last-child {
  border-right: 0;
}

table.diary tr:last-child td {
  border-bottom: 0;
}

table.diary thead th {
  color: var(--muted);
  font-weight: 500;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.03);
}

/* ---------- footer ---------- */

.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--space-lg) clamp(1rem, 4vw, 2.5rem) var(--space-xl);
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1.4fr auto;
  gap: var(--space-md) var(--space-xl);
  align-items: start;
  color: var(--muted);
  font-size: var(--step--1);
}

.footer-brand {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2.2rem;
  height: 2.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-family: var(--font-serif);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  flex: none;
}

.footer-brand p {
  margin: 0;
  max-width: 26rem;
}

.site-footer nav {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.site-footer nav a {
  color: var(--muted);
  text-decoration: none;
}

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

.footer-note {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: var(--space-sm);
  border-top: 1px solid var(--line);
  color: var(--faint);
}

/* ---------- reveal animation ---------- */

.js .reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */

@media (max-width: 900px) {
  .feature {
    grid-template-columns: 1fr;
  }

  .feature-art {
    min-height: 13rem;
  }

  .hero-moon {
    top: auto;
    bottom: 1rem;
    right: 0;
    width: 7.5rem;
    opacity: 0.5;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .site-header nav {
    gap: 1rem;
  }

  .hero {
    padding-top: var(--space-xl);
  }

  .hero-moon {
    display: none;
  }

  .start-here {
    padding: var(--space-lg) var(--space-md);
  }
}

/* ---------- motion preferences ---------- */

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ---------- print (sleep diary) ---------- */

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .site-header,
  .site-footer,
  .skip-link,
  .progress,
  .hero-actions,
  .text-link {
    display: none !important;
  }

  main {
    max-width: none;
    padding: 0;
  }

  .article-body,
  .article-header {
    max-width: none;
  }

  table.diary {
    min-width: 0;
    font-size: 11px;
  }

  table.diary th,
  table.diary td {
    border-color: #bbb;
  }

  a {
    color: #111;
    text-decoration: none;
  }
}