/* =============================================================
   Amamiya Honpo — 雨宮本舗
   Neubrutalism dissolved into ethereal-blue mist.
   Border-radius is forbidden. Slabs are clipped octagons.
   ============================================================= */

* {
  box-sizing: border-box;
  border-radius: 0;
  margin: 0;
  padding: 0;
}

:root {
  --mist:    #f4f8fb; /* primary background      */
  --cement:  #dbe7ef; /* slab interior fill      */
  --fog:     #a9c8dc; /* dividers, accents       */
  --rain:    #7fb3d5; /* hard cyan signal colour */
  --slate:   #3e6c89; /* secondary text          */
  --ink:     #0a1628; /* borders, primary text   */
  --paper:   #ffffff; /* footer kanji counter    */
  --rail-w:  28px;
  --gutter:  80px;
  --slab-cut: 24px;
  --shadow-offset: 8px;
}

html { scroll-behavior: smooth; }

body {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 400;
  font-size: 17px;
  line-height: 1.78;
  letter-spacing: 0.005em;
  color: var(--ink);
  background: var(--mist);
  display: grid;
  grid-template-columns: var(--rail-w) 1fr;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

/* -------------------------------------------------------------
   RAIL — the only navigation surface
   ------------------------------------------------------------- */
.rail {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--rail-w);
  height: 100vh;
  background: var(--ink);
  z-index: 50;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 22px 0;
  gap: 22px;
}

.rail__glyph {
  position: relative;
  width: 28px;
  height: 28px;
  color: var(--mist);
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  cursor: pointer;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  font-weight: 600;
}

.rail__glyph svg { stroke: var(--mist); }

.rail__hanko {
  font-family: "Shippori Mincho", "Cormorant Garamond", serif;
  font-size: 14px;
  font-weight: 500;
  color: var(--mist);
  background: var(--ink);
  border: 1px solid var(--fog);
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-4deg);
}

.rail__panel {
  position: absolute;
  left: var(--rail-w);
  top: 0;
  width: 240px;
  padding: 14px 16px;
  background: rgba(127, 179, 213, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 4px solid var(--ink);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  filter: blur(12px);
  pointer-events: none;
  transition: opacity 380ms ease-out, filter 380ms ease-out;
  z-index: 60;
  font-family: "Cormorant Garamond", serif;
}

.rail__glyph:hover .rail__panel,
.rail__glyph:focus-visible .rail__panel,
.rail__glyph:focus .rail__panel {
  opacity: 1;
  filter: blur(0);
  pointer-events: auto;
}

.rail__panel-eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--ink);
}

.rail__panel-title {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-weight: 500;
  font-size: 1.4rem;
  line-height: 1.05;
  color: var(--ink);
}

.rail__panel-body {
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--ink);
}

/* -------------------------------------------------------------
   RAIN STREAKS — left gutter
   ------------------------------------------------------------- */
.rain {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  width: var(--gutter);
  height: 100vh;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.streak {
  position: absolute;
  top: -200px;
  width: 1px;
  background: var(--fog);
  opacity: 0.45;
  height: var(--h, 80px);
  left: var(--x, 30px);
  animation: fall var(--d, 9s) linear var(--delay, 0s) infinite;
}

@keyframes fall {
  0%   { transform: translateY(0); }
  100% { transform: translateY(120vh); }
}

/* -------------------------------------------------------------
   CONTENT TRACK
   ------------------------------------------------------------- */
.track {
  grid-column: 2 / 3;
  padding: 14vh 0 0 var(--gutter);
  position: relative;
  z-index: 2;
}

/* shared eyebrow */
.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 18px;
}

.kanji-inline {
  font-family: "Shippori Mincho", "Cormorant Garamond", serif;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* -------------------------------------------------------------
   HERO
   ------------------------------------------------------------- */
.hero {
  position: relative;
  max-width: 720px;
  margin-left: clamp(0px, 8vw, 160px);
  padding-bottom: 18vh;
}

.hero__hanko {
  position: absolute;
  top: -12vh;
  right: clamp(-40px, 4vw, 80px);
  width: 56px;
  height: 56px;
  background: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(4deg);
  z-index: 3;
}
.hero__hanko-mark {
  font-family: "Shippori Mincho", serif;
  color: var(--mist);
  font-size: 26px;
  font-weight: 500;
  transform: rotate(-4deg);
}

.hero__haze {
  position: absolute;
  top: -3vh;
  left: -20px;
  width: 320px;
  height: 320px;
  background: var(--rain);
  filter: blur(48px);
  opacity: 0.55;
  transform: rotate(8deg);
  z-index: 1;
  transition: filter 900ms ease-out, opacity 900ms ease-out;
}

.hero__haze--focused {
  filter: blur(4px);
  opacity: 0.85;
}

.hero__title {
  position: relative;
  z-index: 2;
  font-family: "Cormorant Garamond", serif;
  font-weight: 300;
  font-style: italic;
  font-size: clamp(3rem, 8vw, 6.5rem);
  letter-spacing: -0.02em;
  line-height: 0.92;
  color: var(--ink);
  margin-bottom: 28px;
}

.hero__title em {
  font-style: italic;
  font-weight: 300;
}

.hero__period {
  color: var(--rain);
  font-style: normal;
}

.hero__lede {
  position: relative;
  z-index: 2;
  font-size: 1.125rem;
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 32px;
  color: var(--ink);
}

.hero__meta {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
  border-top: 4px solid var(--ink);
  padding-top: 16px;
}

.hero__meta-item strong {
  color: var(--ink);
  font-weight: 600;
}

.hero__sentinel {
  position: absolute;
  bottom: 0;
  width: 1px;
  height: 1px;
}

/* -------------------------------------------------------------
   MORSE DIVIDER
   ------------------------------------------------------------- */
.morse {
  display: flex;
  gap: 10px;
  margin: 24px 0;
  max-width: 720px;
  margin-left: clamp(0px, 8vw, 160px);
}
.morse::before,
.morse::after {
  content: "";
  display: contents;
}
.morse {
  /* compose 14 hard rectangles via background-image */
  height: 2px;
  background-image:
    linear-gradient(to right,
      var(--rain) 0, var(--rain) 6%, transparent 6%, transparent 8%,
      var(--rain) 8%, var(--rain) 14%, transparent 14%, transparent 16%,
      var(--rain) 16%, var(--rain) 22%, transparent 22%, transparent 24%,
      var(--rain) 24%, var(--rain) 30%, transparent 30%, transparent 32%,
      var(--rain) 32%, var(--rain) 38%, transparent 38%, transparent 40%,
      var(--rain) 40%, var(--rain) 46%, transparent 46%, transparent 48%,
      var(--rain) 48%, var(--rain) 54%, transparent 54%, transparent 56%,
      var(--rain) 56%, var(--rain) 62%, transparent 62%, transparent 64%,
      var(--rain) 64%, var(--rain) 70%, transparent 70%, transparent 72%,
      var(--rain) 72%, var(--rain) 78%, transparent 78%, transparent 80%,
      var(--rain) 80%, var(--rain) 86%, transparent 86%, transparent 88%,
      var(--rain) 88%, var(--rain) 94%, transparent 94%, transparent 96%,
      var(--rain) 96%, var(--rain) 100%);
  background-repeat: no-repeat;
}

/* -------------------------------------------------------------
   ENTRIES (octagonal slabs)
   ------------------------------------------------------------- */
.entries {
  display: flex;
  flex-direction: column;
  gap: 80px;
  padding: 40px 0 60px;
}

.slab {
  position: relative;
  max-width: 720px;
  margin-left: clamp(0px, 8vw, 160px);
  padding: 56px 48px 44px;
  background: var(--cement);
  border: 4px solid var(--ink);
  clip-path: polygon(
    0 0,
    calc(100% - var(--slab-cut)) 0,
    100% var(--slab-cut),
    100% 100%,
    var(--slab-cut) 100%,
    0 calc(100% - var(--slab-cut))
  );
  isolation: isolate;
}

/* clipped offset shadow rectangle */
.slab::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--rain);
  clip-path: polygon(
    0 0,
    calc(100% - var(--slab-cut)) 0,
    100% var(--slab-cut),
    100% 100%,
    var(--slab-cut) 100%,
    0 calc(100% - var(--slab-cut))
  );
  transform: translate(var(--shadow-offset), var(--shadow-offset));
  z-index: -1;
}

.slab--shift-up   { transform: translateY(-9px); }
.slab--shift-down { transform: translateY(7px);  }

.slab__sigil {
  display: inline-flex;
  gap: 4px;
  margin-bottom: 18px;
}
.sigil-cell {
  display: inline-block;
  width: 16px;
  height: 16px;
  background: var(--ink);
}
.sigil-cell--cyan { background: var(--rain); }

.slab__glyph {
  position: absolute;
  top: 18px;
  left: 18px;
  width: 24px;
  height: 24px;
}

.slab__eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 14px;
}

.slab__title {
  font-family: "Cormorant Garamond", serif;
  font-weight: 500;
  font-style: italic;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin-bottom: 22px;
  color: var(--ink);
}

.slab__body {
  font-size: 1.0625rem;
  line-height: 1.78;
  margin-bottom: 18px;
  color: var(--ink);
}

.slab__caption {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  margin-top: 24px;
  padding-top: 14px;
  border-top: 1px solid var(--fog);
}

.slab__index {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 12px 0 24px;
  border-top: 2px solid var(--ink);
  padding-top: 12px;
}
.slab__index li {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  gap: 16px;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--fog);
}
.slab__index li span:first-child {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--slate);
}
.slab__index li span:nth-child(2) {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: 1.0625rem;
  color: var(--ink);
}
.slab__index li span:last-child {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.625rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate);
  text-align: right;
}

/* -------------------------------------------------------------
   COLOPHON
   ------------------------------------------------------------- */
.colophon {
  max-width: 720px;
  margin-left: clamp(0px, 8vw, 160px);
  padding: 32px 0 60px;
}

.colophon__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 32px;
  border-top: 4px solid var(--ink);
  padding-top: 24px;
}

.colophon__cell {
  border-left: 2px solid var(--ink);
  padding: 4px 0 4px 14px;
}

.colophon__label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 4px;
}

.colophon__value {
  font-family: "Cormorant Garamond", serif;
  font-style: italic;
  font-size: 1.125rem;
  color: var(--ink);
}

/* -------------------------------------------------------------
   FOOTER — inverted slab, 60vh, single kanji 雨
   ------------------------------------------------------------- */
.footer {
  position: relative;
  height: 60vh;
  margin: 60px 0 0 clamp(0px, 8vw, 160px);
  max-width: 1100px;
  background: var(--rain);
  border: 4px solid var(--ink);
  clip-path: polygon(
    0 0,
    calc(100% - 32px) 0,
    100% 32px,
    100% 100%,
    32px 100%,
    0 calc(100% - 32px)
  );
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding: 0 8vw;
  isolation: isolate;
}

.footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--ink);
  clip-path: polygon(
    0 0,
    calc(100% - 32px) 0,
    100% 32px,
    100% 100%,
    32px 100%,
    0 calc(100% - 32px)
  );
  transform: translate(10px, 10px);
  z-index: -1;
}

.footer__kanji {
  font-family: "Shippori Mincho", serif;
  font-weight: 500;
  font-size: 280px;
  line-height: 1;
  color: var(--paper);
  letter-spacing: -0.02em;
  user-select: none;
}

.footer__line {
  position: absolute;
  bottom: 24px;
  right: 32px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--paper);
}

/* -------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------- */
@media (max-width: 900px) {
  body { font-size: 16px; }
  .track { padding-left: 60px; }
  .slab { padding: 48px 28px 36px; margin-left: 0; }
  .hero, .colophon { margin-left: 0; }
  .morse { margin-left: 0; }
  .footer { margin-left: 0; padding: 0 32px; }
  .footer__kanji { font-size: 180px; }
  .colophon__grid { grid-template-columns: 1fr; }
  .slab__index li { grid-template-columns: 48px 1fr; }
  .slab__index li span:last-child { display: none; }
}

@media (max-width: 600px) {
  :root { --gutter: 40px; }
  .track { padding-left: 36px; }
  .hero__title { font-size: clamp(2.4rem, 11vw, 4rem); }
  .footer__kanji { font-size: 140px; }
  .footer { height: 48vh; }
  .rail__panel { width: 200px; }
}

@media (prefers-reduced-motion: reduce) {
  .streak { animation: none; opacity: 0; }
  .hero__haze { transition: none; }
  .rail__panel { transition: none; }
}