/* ==================================================
   rinji.net — Provisional Bulletin
   Palette:
     #faf8f5  Parchment White (primary background)
     #1a1a1a  Ink Black       (primary text)
     #c41e3a  Alert Crimson   (accent / stamps / rules)
     #8b7355  Archive Brown   (meta / illustrations)
     #e8e2d9  Aged Linen      (cards / quote surfaces)
     #2c5f7c  Diplomatic Blue (links / interactive)
     #f0ece5  Soft Ivory      (alternate sections)
   ================================================== */

:root {
    --parchment: #faf8f5;
    --ink: #1a1a1a;
    --crimson: #c41e3a;
    --brown: #8b7355;
    --linen: #e8e2d9;
    --blue: #2c5f7c;
    --ivory: #f0ece5;

    --display: "Bebas Neue", "Inter", "Arial Narrow", sans-serif;
    --serif: "Source Serif 4", "Inter", Georgia, serif;
    --jp: "Noto Sans JP", "Inter", sans-serif;
    --mono: "Red Hat Mono", "Inter", "Menlo", monospace;
    --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

    --gutter: clamp(20px, 4vw, 64px);
    --col-w: minmax(0, 1fr);

    --grain-svg: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.55 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/></svg>");
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--parchment);
    color: var(--ink);
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body {
    overflow-x: hidden;
}

a {
    color: var(--blue);
    text-decoration: none;
    border-bottom: 1px solid currentColor;
    transition: color 220ms ease, border-color 220ms ease;
}
a:hover { color: var(--crimson); border-bottom-color: var(--crimson); }

.mono {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--brown);
    text-transform: uppercase;
}
.mono--alert { color: var(--crimson); font-weight: 500; }

/* ==================================================
   INTRO — full viewport opening
   ================================================== */

.intro {
    position: relative;
    min-height: 100vh;
    background: var(--parchment);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 0 var(--gutter);
    transform: translateY(0);
    transition: transform 1100ms cubic-bezier(0.7, 0, 0.2, 1),
                opacity 900ms ease;
    will-change: transform, opacity;
}

.intro.is-receding {
    transform: translateY(-12vh);
    opacity: 0;
    pointer-events: none;
}

.intro-inner {
    position: relative;
    text-align: center;
    width: 100%;
    max-width: 1200px;
}

.intro-line {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 0;
    height: 1px;
    background: var(--ink);
    transform: translate(-50%, 0);
    transition: width 1500ms cubic-bezier(0.85, 0, 0.15, 1);
}

.intro-line.is-drawn {
    width: min(72vw, 980px);
}

.intro-kanji {
    font-family: var(--display);
    font-size: 20vw;
    line-height: 0.85;
    color: var(--ink);
    letter-spacing: 0.05em;
    margin: 0 0 0.18em 0;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 800ms ease 100ms, transform 800ms ease 100ms;
    font-weight: 400;
}
.intro-kanji.is-shown { opacity: 1; transform: translateY(0); }

.intro-domain {
    font-family: var(--mono);
    font-size: 14px;
    letter-spacing: 0.22em;
    color: var(--ink);
    text-transform: lowercase;
    margin-top: 28px;
    opacity: 0;
    transition: opacity 700ms ease 200ms;
}
.intro-domain.is-shown { opacity: 1; }

.intro-meta {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    margin-top: 22px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.32em;
    color: var(--brown);
    text-transform: uppercase;
    opacity: 0;
    transition: opacity 700ms ease 380ms;
}
.intro-meta.is-shown { opacity: 1; }
.intro-meta-tag { display: inline-block; }
.intro-meta-sep { color: var(--crimson); }

.intro-corner {
    position: absolute;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--brown);
    text-transform: uppercase;
    opacity: 0;
    transition: opacity 700ms ease 600ms;
}
.intro-corner.is-shown { opacity: 0.85; }
.intro-corner--tl { top: 22px; left: var(--gutter); }
.intro-corner--tr { top: 22px; right: var(--gutter); font-family: var(--jp); letter-spacing: 0.4em; color: var(--crimson); }
.intro-corner--bl { bottom: 22px; left: var(--gutter); }
.intro-corner--br { bottom: 22px; right: var(--gutter); }

/* ==================================================
   TOP BAR
   ================================================== */

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--parchment);
    border-top: 1px solid var(--crimson);
    border-bottom: 1px solid var(--ink);
    transform: translateY(-110%);
    transition: transform 700ms cubic-bezier(0.6, 0, 0.2, 1);
}
.topbar.is-revealed { transform: translateY(0); }

.topbar-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
    padding: 10px var(--gutter);
}

.topbar-domain {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.28em;
    color: var(--ink);
    text-transform: lowercase;
    justify-self: start;
}

.topbar-center {
    font-family: var(--jp);
    font-size: 11px;
    letter-spacing: 0.3em;
    color: var(--brown);
    text-transform: uppercase;
    white-space: nowrap;
}

.topbar-toc {
    justify-self: end;
    font-family: var(--jp);
    font-size: 12px;
    letter-spacing: 0.18em;
    color: var(--ink);
    border-bottom: 1px solid var(--ink);
}
.topbar-toc:hover { color: var(--crimson); border-bottom-color: var(--crimson); }

/* ==================================================
   DOCUMENT
   ================================================== */

.document {
    position: relative;
    background: var(--parchment);
    padding-top: 80px;
}

.bulletin {
    position: relative;
    padding: 200px var(--gutter);
    background: var(--parchment);
}

.bulletin--ivory {
    background: var(--ivory);
}

.grid {
    display: grid;
    grid-template-columns: repeat(8, var(--col-w));
    gap: 24px;
    max-width: 1320px;
    margin: 0 auto;
    position: relative;
}

/* Section number — monumental numeral in leftmost column */
.section-number {
    grid-column: 1 / span 1;
    font-family: var(--display);
    font-size: clamp(96px, 12vw, 180px);
    line-height: 0.8;
    color: var(--ink);
    letter-spacing: 0.02em;
    opacity: 0;
    transition: opacity 900ms ease;
    user-select: none;
    pointer-events: none;
    align-self: start;
    transform: translateX(-4px);
}

.section-number.is-revealed {
    opacity: 0.15;
}

/* Bulletin body placement */
.bulletin-body {
    grid-column: 2 / span 5;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 900ms cubic-bezier(0.2, 0.7, 0.2, 1) 200ms,
                transform 900ms cubic-bezier(0.2, 0.7, 0.2, 1) 200ms;
}
.bulletin-body.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

.bulletin-body--wide { grid-column: 2 / span 6; }
.bulletin-body--right { grid-column: 4 / span 5; }
.bulletin-body--center { grid-column: 2 / span 6; text-align: left; }

/* Kicker — section subtitle / classification label */
.kicker {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 28px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--ink);
}
.kicker--right { justify-content: flex-start; }
.kicker--center { justify-content: flex-start; }

.kicker-jp {
    font-family: var(--jp);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.18em;
    color: var(--ink);
}
.kicker-en {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.32em;
    color: var(--brown);
    text-transform: uppercase;
}
.kicker-divider {
    width: 24px;
    height: 1px;
    background: var(--crimson);
}
.kicker-stamp {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.28em;
    color: var(--crimson);
    border: 1px solid var(--crimson);
    padding: 4px 10px;
    text-transform: uppercase;
    border-radius: 1px;
}

/* Display headlines */
.display {
    font-family: var(--display);
    color: var(--ink);
    letter-spacing: 0.05em;
    line-height: 0.92;
    margin: 0 0 36px 0;
    font-weight: 400;
}
.display--xl { font-size: clamp(56px, 9vw, 120px); }
.display--lg { font-size: clamp(44px, 6.5vw, 84px); }
.display--md { font-size: clamp(36px, 5vw, 64px); }

/* Lede paragraph */
.lede {
    font-family: var(--serif);
    font-size: clamp(19px, 1.4vw, 22px);
    line-height: 1.6;
    color: var(--ink);
    max-width: 60ch;
    margin: 0 0 36px 0;
}
.lede em {
    font-style: italic;
    color: var(--crimson);
}

.caption {
    font-family: var(--serif);
    font-style: italic;
    color: var(--brown);
    font-size: 15px;
    line-height: 1.65;
    max-width: 56ch;
    margin: 0 0 28px 0;
}
.caption--right {
    text-align: right;
    margin-top: 18px;
}

/* Rules */
.rule {
    height: 1px;
    background: var(--ink);
    margin: 28px 0;
}
.rule--full { width: 100%; background: var(--ink); }
.rule--3col { width: 38%; background: var(--crimson); height: 2px; }
.rule--center { margin-left: 0; }

/* Meta row */
.meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    margin-top: 18px;
}

/* ==================================================
   DEFINITION CARD (Bulletin 02)
   ================================================== */

.def-card {
    position: relative;
    background: var(--linen);
    padding: 48px 56px 56px;
    margin-top: 8px;
    box-shadow: inset -20px -20px 30px rgba(0, 0, 0, 0.03);
    border-top: 2px solid var(--ink);
}
.def-card-fold {
    position: absolute;
    right: 0; top: 0;
    width: 36px; height: 36px;
    background: linear-gradient(225deg, var(--parchment) 0 50%, transparent 50%);
    border-left: 1px solid rgba(0,0,0,0.08);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.def-list {
    list-style: none;
    margin: 0;
    padding: 0;
    counter-reset: defi;
}
.def-list li {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 18px;
    padding: 18px 0;
    border-bottom: 1px solid rgba(26,26,26,0.12);
}
.def-list li:last-child { border-bottom: none; }

.def-num {
    font-family: var(--display);
    font-size: 24px;
    color: var(--crimson);
    letter-spacing: 0.06em;
    line-height: 1.2;
    padding-top: 4px;
}
.def-body {
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.65;
    color: var(--ink);
}

/* ==================================================
   HANKO STAMP (general)
   ================================================== */

.hanko {
    position: absolute;
    width: 96px;
    height: 96px;
    border: 3px solid var(--crimson);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--crimson);
    background: transparent;
    transform-origin: center;
    /* initial state for animation */
    transform: scale(1.5) rotate(-30deg);
    opacity: 0;
    transition: transform 600ms cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 400ms ease;
}
.hanko.is-stamped {
    transform: scale(1) rotate(-8deg);
    opacity: 1;
}

.hanko-text {
    font-family: var(--jp);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: 0.08em;
    color: var(--crimson);
    text-align: center;
    line-height: 1;
}

.hanko--approved {
    bottom: 28px;
    right: 36px;
}

.hanko--filed {
    position: relative;
    width: 88px;
    height: 88px;
    border-radius: 50%;
    flex-shrink: 0;
}
.hanko--filed .hanko-text { font-size: 20px; }

.hanko--rinji {
    position: relative;
    width: 96px;
    height: 96px;
    border-radius: 4px;
    flex-shrink: 0;
}
.hanko--rinji .hanko-text { font-size: 24px; }

/* ==================================================
   REDACTION GRID (Bulletin 03)
   ================================================== */

.redaction-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 24px;
}

.redaction {
    position: relative;
    margin: 0;
    padding: 0;
}

.redaction-bar {
    position: relative;
    width: 100%;
    background-color: var(--ink);
    background-image: var(--grain-svg);
    background-size: 160px 160px;
    background-blend-mode: screen;
    transition: opacity 600ms ease, background-color 600ms ease;
    cursor: help;
}

.redaction--16x9 .redaction-bar { aspect-ratio: 16 / 9; }
.redaction--4x3  .redaction-bar { aspect-ratio: 4 / 3; }
.redaction--1x1  .redaction-bar { aspect-ratio: 1 / 1; }

.redaction-reveal {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--ink);
    opacity: 0;
    transition: opacity 600ms ease;
    pointer-events: none;
    background: var(--linen);
}
.redaction-reveal-en {
    font-family: var(--mono);
    font-size: 13px;
    letter-spacing: 0.36em;
    color: var(--ink);
}
.redaction-reveal-jp {
    font-family: var(--jp);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.22em;
    color: var(--crimson);
}
.redaction-reveal-ref {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.24em;
    color: var(--brown);
    margin-top: 8px;
}

.redaction:hover .redaction-bar {
    opacity: 0.10;
}
.redaction:hover .redaction-reveal {
    opacity: 1;
}

.redaction figcaption {
    margin-top: 12px;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--brown);
    text-transform: uppercase;
}

/* ==================================================
   TIMETABLE (Bulletin 04 — Index)
   ================================================== */

.timetable {
    list-style: none;
    margin: 28px 0 0 0;
    padding: 0;
    border-top: 1px solid var(--ink);
}

.timetable-row {
    display: grid;
    grid-template-columns: 90px 80px 1fr 1fr 100px;
    align-items: baseline;
    gap: 18px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(26,26,26,0.18);
    transition: background 240ms ease, padding-left 280ms ease;
    cursor: default;
    position: relative;
}
.timetable-row::before {
    content: "";
    position: absolute;
    left: 0; top: 50%;
    width: 0;
    height: 1px;
    background: var(--crimson);
    transition: width 320ms cubic-bezier(0.4, 0, 0.2, 1);
}
.timetable-row:hover {
    padding-left: 24px;
    background: rgba(196, 30, 58, 0.04);
}
.timetable-row:hover::before {
    width: 14px;
}

.tt-time { font-size: 13px; }
.tt-code { font-size: 12px; color: var(--ink); }

.tt-title {
    font-family: var(--display);
    font-size: clamp(20px, 1.8vw, 26px);
    letter-spacing: 0.04em;
    color: var(--ink);
}
.tt-jp {
    font-family: var(--jp);
    font-weight: 500;
    font-size: 14px;
    letter-spacing: 0.12em;
    color: var(--brown);
}
.tt-status {
    font-size: 11px;
    text-align: right;
    justify-self: end;
}

/* ==================================================
   PULLQUOTE (Bulletin 05)
   ================================================== */

.pullquote {
    position: relative;
    background: var(--linen);
    padding: 64px 64px 56px;
    margin: 0 0 48px 0;
    box-shadow: inset -20px -20px 30px rgba(0, 0, 0, 0.03);
    border-left: 3px solid var(--crimson);
}

.pullquote-mark {
    position: absolute;
    top: 4px;
    left: 18px;
    font-family: var(--display);
    font-size: 120px;
    line-height: 1;
    color: var(--crimson);
    opacity: 0.6;
}

.pullquote-text {
    margin: 0;
    font-family: var(--serif);
    font-style: italic;
    font-size: clamp(20px, 1.8vw, 26px);
    line-height: 1.55;
    color: var(--ink);
    max-width: 60ch;
}

.pullquote-cite {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid rgba(26,26,26,0.15);
}
.pullquote-name {
    font-family: var(--display);
    font-size: 18px;
    letter-spacing: 0.06em;
    color: var(--ink);
}
.pullquote-meta { font-size: 11px; }

.line-illos {
    display: flex;
    gap: 28px;
    align-items: center;
    flex-wrap: wrap;
    color: var(--brown);
    opacity: 0.4;
}
.illo {
    width: 56px;
    height: 56px;
    color: var(--brown);
}

/* ==================================================
   FORM CARD (Bulletin 06)
   ================================================== */

.form-card {
    position: relative;
    background: var(--parchment);
    border: 1px solid var(--ink);
    padding: 48px 56px 64px;
    margin-top: 28px;
    box-shadow: inset -20px -20px 30px rgba(0, 0, 0, 0.04);
}
.form-card-fold {
    position: absolute;
    right: 0; top: 0;
    width: 36px; height: 36px;
    background: linear-gradient(225deg, var(--ivory) 0 50%, transparent 50%);
    border-left: 1px solid rgba(0,0,0,0.08);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.form-row {
    display: grid;
    grid-template-columns: 220px 1fr 320px;
    align-items: center;
    gap: 18px;
    padding: 16px 0;
    border-bottom: 1px dashed rgba(26,26,26,0.25);
}
.form-row:last-of-type { border-bottom: 1px solid var(--ink); }

.form-label {
    font-size: 12px;
    color: var(--ink);
}

.form-rule {
    height: 1px;
    background: rgba(26,26,26,0.2);
}

.form-value {
    font-family: var(--serif);
    font-size: 17px;
    color: var(--ink);
    text-align: right;
}

.form-stamps {
    display: flex;
    gap: 36px;
    align-items: center;
    justify-content: flex-end;
    margin-top: 32px;
}

/* ==================================================
   CLOSING (Bulletin 07)
   ================================================== */

.closing {
    font-family: var(--serif);
    font-size: clamp(18px, 1.4vw, 22px);
    line-height: 1.65;
    color: var(--ink);
    max-width: 60ch;
    margin: 0 0 28px 0;
}

.signoff {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 24px;
}
.signoff-jp {
    font-family: var(--jp);
    font-size: 16px;
    letter-spacing: 0.36em;
    color: var(--crimson);
}
.signoff-mono { font-size: 11px; }

/* ==================================================
   COLOPHON
   ================================================== */

.colophon {
    background: var(--ink);
    color: var(--parchment);
    padding: 80px var(--gutter) 56px;
    margin-top: 120px;
}

.colophon-rule {
    width: 64px;
    height: 2px;
    background: var(--crimson);
    margin-bottom: 48px;
}

.colophon-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    max-width: 1320px;
    margin: 0 auto 48px;
}

.colophon-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.colophon-key {
    color: rgba(250, 248, 245, 0.55);
    font-size: 11px;
    letter-spacing: 0.32em;
}
.colophon-val {
    font-family: var(--display);
    font-size: 22px;
    letter-spacing: 0.05em;
    color: var(--parchment);
    line-height: 1.2;
}
.colophon-val--alert { color: var(--crimson); }

.colophon-line {
    max-width: 1320px;
    margin: 0 auto;
    padding-top: 32px;
    border-top: 1px solid rgba(250, 248, 245, 0.18);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: rgba(250, 248, 245, 0.55);
    text-transform: uppercase;
}

/* ==================================================
   RESPONSIVE
   ================================================== */

@media (max-width: 1100px) {
    .form-row { grid-template-columns: 180px 1fr 220px; }
}

@media (max-width: 900px) {
    .grid { grid-template-columns: repeat(4, 1fr); gap: 16px; }
    .section-number { grid-column: 1 / span 1; font-size: clamp(72px, 18vw, 120px); }
    .bulletin-body,
    .bulletin-body--wide,
    .bulletin-body--right,
    .bulletin-body--center { grid-column: 1 / -1; }
    .bulletin { padding: 140px var(--gutter); }
    .redaction-grid { grid-template-columns: 1fr; }
    .colophon-grid { grid-template-columns: repeat(2, 1fr); }
    .form-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    .form-rule { display: none; }
    .form-value { text-align: left; }
    .timetable-row {
        grid-template-columns: 70px 1fr;
        grid-template-rows: auto auto auto;
        gap: 4px 14px;
    }
    .tt-time { grid-column: 1; grid-row: 1; }
    .tt-code { grid-column: 1; grid-row: 2; }
    .tt-title { grid-column: 2; grid-row: 1 / span 2; }
    .tt-jp { grid-column: 2; grid-row: 3; }
    .tt-status { grid-column: 1 / -1; grid-row: 4; justify-self: start; text-align: left; }
}

@media (max-width: 600px) {
    .topbar-center { display: none; }
    .topbar-inner { grid-template-columns: 1fr auto; }
    .def-card, .pullquote, .form-card { padding: 32px 24px; }
    .hanko--approved { width: 76px; height: 76px; right: 16px; bottom: 16px; }
    .hanko-text { font-size: 18px; }
    .colophon-grid { grid-template-columns: 1fr; }
    .intro-corner { font-size: 9px; letter-spacing: 0.14em; }
    .intro-meta { gap: 8px; font-size: 9px; letter-spacing: 0.22em; }
}