/* ============================================================
   JYDNX — profile site  v2
   dark red / black / gold / acid ・ blackletter ・ 電脳侍
   ============================================================ */

/* ---- Stacktwin (add your licensed font files to assets/fonts/) ----
   Drop in whichever formats you own; the browser uses the first
   one it finds. If none exist, Pirata One (Google) takes over. */
@font-face {
  font-family: "Stacktwin";
  src: url("../assets/fonts/Stacktwin.woff2") format("woff2"),
       url("../assets/fonts/Stacktwin.woff") format("woff"),
       url("../assets/fonts/Stacktwin.otf") format("opentype"),
       url("../assets/fonts/Stacktwin.ttf") format("truetype");
  font-weight: 450;
  font-style: normal;
  font-display: swap;
}

:root {
  --red: #910000;          /* Red 300 — base background */
  --red-hot: #C40000;
  --black: #0B0505;
  --ink: #050202;
  --gold: #D9AE5F;
  --gold-glow: #F6DFA4;
  --acid: #D8F02B;         /* Stacktwin reference green */
  --paper: #F3EADB;

  --font-display: "Stacktwin", "Pirata One", serif;
  --font-jp: "Yuji Mai", serif;
  --font-mono: "Share Tech Mono", monospace;
  --font-body: "Zen Kaku Gothic New", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  /* black on top bleeding into dark red across the first half of the page */
  background-color: var(--red);
  background-image: linear-gradient(
    to bottom,
    #000000 0%,
    #120202 16%,
    #3d0000 34%,
    var(--red) 50%
  );
  background-repeat: no-repeat;
  background-size: 100% 100vh;
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.mono { font-family: var(--font-mono); }

.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

/* ============ INTRO ============ */

.intro {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .6s ease;
}
.intro__gif { width: 100%; height: 100%; object-fit: cover; }
.intro__tag {
  position: absolute;
  bottom: 6vh;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  color: var(--gold);
  font-size: .8rem;
  letter-spacing: .35em;
  text-transform: uppercase;
}
.blink { animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.intro.is-done { opacity: 0; pointer-events: none; }

.site { opacity: 0; transition: opacity .8s ease .15s; }
.site.is-live { opacity: 1; }

/* ============ ATMOSPHERE ============ */

.fx--scanlines {
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0, 0, 0, .10) 0px,
    rgba(0, 0, 0, .10) 1px,
    transparent 1px,
    transparent 4px
  );
  mix-blend-mode: multiply;
}

.fx--grain {
  position: fixed;
  inset: -50%;
  z-index: 61;
  pointer-events: none;
  opacity: .15;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 1.2s steps(4) infinite;
}
@keyframes grain-shift {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-3%, 2%); }
  50% { transform: translate(2%, -3%); }
  75% { transform: translate(-2%, -2%); }
  100% { transform: translate(3%, 3%); }
}

/* ============ NAV ============ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2rem;
}
.nav__logo {
  font-family: var(--font-display);
  font-size: 2.1rem;
  line-height: 1;
  color: var(--acid);
  text-decoration: none;
}
.nav__links { display: flex; gap: 1.8rem; }
.nav__links a {
  font-family: var(--font-mono);
  font-size: .85rem;
  letter-spacing: .12em;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s, color .2s;
}
.nav__links a:hover,
.nav__links a:focus-visible {
  color: var(--acid);
  border-bottom-color: var(--acid);
}
a:focus-visible { outline: 2px dashed var(--acid); outline-offset: 3px; }

/* ============ HERO ============ */

.hero {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1rem 4rem;
}

/* title + calligraphy share one stack; JP sits fully behind JYDNX */
.hero__stack {
  position: relative;
  display: grid;
  place-items: center;
  margin: 2rem 0 3.5rem;
}

.hero__jp {
  grid-area: 1 / 1;
  writing-mode: vertical-rl;
  font-family: var(--font-jp);
  font-size: clamp(5rem, 15vw, 13rem);
  /* matte brush gold, clearly dimmer than the title */
  color: #C79B54;
  letter-spacing: .1em;
  z-index: 0;
  opacity: .55;
  filter: url(#warp);
  text-shadow:
    0 0 10px rgba(217, 174, 95, .5),
    0 0 30px rgba(217, 174, 95, .3),
    0 0 70px rgba(217, 174, 95, .18);
  animation: gold-breathe 4.5s ease-in-out infinite;
  pointer-events: none;
}
@keyframes gold-breathe {
  0%, 100% { opacity: .55; }
  50% { opacity: .38; }
}

.hero__title {
  grid-area: 1 / 1;
  z-index: 2;
  font-family: var(--font-display);
  font-weight: 400;
  /* ~5 wide-tracked characters ≈ full viewport width */
  font-size: clamp(2.6rem, 11.5vw, 11.5rem);
  line-height: 1;
  color: var(--gold-glow);
  letter-spacing: .42em;
  margin-right: -.42em; /* cancel trailing tracking so it centers true */
  white-space: nowrap;
  /* taller glyphs, same horizontal length */
  transform: scaleY(1.45);
  transform-origin: center;
  /* sharp text — no displacement blur; glow via shadows only */
  text-shadow:
    0 0 6px rgba(246, 223, 164, .95),
    0 0 18px rgba(217, 174, 95, .85),
    0 0 48px rgba(217, 174, 95, .6),
    0 0 110px rgba(217, 174, 95, .4),
    0 0 190px rgba(196, 0, 0, .35);
  user-select: none;
}

/* glitch: layered slices */
.glitch { position: relative; }
.glitch::before,
.glitch::after {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.glitch::before {
  color: var(--gold);
  z-index: -1;
  clip-path: inset(12% 0 58% 0);
  animation: glitch-a 2.8s steps(1) infinite;
}
.glitch::after {
  color: var(--red-hot);
  z-index: -2;
  clip-path: inset(62% 0 8% 0);
  animation: glitch-b 3.4s steps(1) infinite;
}
@keyframes glitch-a {
  0%, 87%, 100% { transform: none; opacity: 0; }
  88% { transform: translate(-.3em, -.02em); clip-path: inset(8% 0 72% 0); opacity: 1; }
  91% { transform: translate(.22em, .015em); clip-path: inset(38% 0 40% 0); opacity: 1; }
  94% { transform: translate(-.16em, 0); clip-path: inset(70% 0 6% 0); opacity: 1; }
  96% { transform: none; opacity: 0; }
}
@keyframes glitch-b {
  0%, 78%, 100% { transform: none; opacity: 0; }
  79% { transform: translate(.26em, .02em); clip-path: inset(52% 0 30% 0); opacity: 1; }
  83% { transform: translate(-.24em, -.015em); clip-path: inset(18% 0 66% 0); opacity: 1; }
  86% { transform: none; opacity: 0; }
}

/* softer glitch for section headings */
.glitch-soft { position: relative; }
.glitch-soft::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  color: var(--gold);
  clip-path: inset(30% 0 42% 0);
  opacity: 0;
  animation: glitch-a 5.5s steps(1) infinite;
  pointer-events: none;
}

/* hover glitch */
.glitch-hover { position: relative; display: inline-block; }
.glitch-hover:hover { animation: jitter .28s steps(2) infinite; }
@keyframes jitter {
  0% { transform: translate(0, 0); }
  25% { transform: translate(-2px, 1px); }
  50% { transform: translate(2px, -1px); }
  75% { transform: translate(-1px, -1px); }
  100% { transform: translate(1px, 1px); }
}

.hero__sub {
  z-index: 2;
  font-size: clamp(.72rem, 1.6vw, .95rem);
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--paper);
}
.hero__sub .dot { color: var(--gold); text-shadow: 0 0 8px var(--gold); }

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: .72rem;
  letter-spacing: .3em;
  color: var(--paper);
  opacity: .7;
  animation: drift 2.4s ease-in-out infinite;
}
@keyframes drift { 50% { transform: translate(-50%, 6px); } }

/* stray terminal fragments */
.hero__stray {
  position: absolute;
  font-size: .7rem;
  letter-spacing: .08em;
  color: rgba(243, 234, 219, .4);
  z-index: 1;
  filter: url(#warp-hard);
  white-space: nowrap;
}
.hero__stray--tl { top: 16%; left: 6%; }
.hero__stray--tr { top: 20%; right: 5%; transform: rotate(2deg); }
.hero__stray--ml { top: 46%; left: 3%; transform: rotate(-90deg); transform-origin: left; }
.hero__stray--mr { top: 68%; right: 12%; transform: rotate(-1.5deg); }
.hero__stray--bl { bottom: 14%; left: 10%; }
.hero__stray--br { bottom: 9%; right: 7%; transform: rotate(1deg); }

/* ============ MARQUEE ============ */

.marquee {
  position: relative;
  z-index: 2;
  background: var(--ink);
  color: var(--red-hot);
  overflow: hidden;
  border-top: 2px solid #000;
  border-bottom: 2px solid #000;
  padding: .55rem 0;
}
.marquee__track {
  display: inline-flex;
  gap: 3rem;
  white-space: nowrap;
  font-size: .8rem;
  letter-spacing: .15em;
  animation: marquee 28s linear infinite;
}
.marquee__track span { flex: none; }
.marquee__track span:nth-child(even) { color: var(--gold); }
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============ ABOUT (gif background) ============ */

.about {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(5rem, 10vw, 8rem) 1.5rem;
  overflow: hidden;
}
.about__bg {
  position: absolute;
  inset: 0;
  background: url("../assets/about-bg.gif") center / cover no-repeat;
  z-index: 0;
}
/* dark veil so the text stays readable over the gif */
.about__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(to bottom, rgba(0,0,0,.55) 0%, rgba(0,0,0,.25) 30%, rgba(0,0,0,.25) 70%, rgba(0,0,0,.6) 100%);
}
.about__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  width: 100%;
  text-align: left;
  background: rgba(5, 2, 2, .55);
  border: 1px solid rgba(217, 174, 95, .3);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  padding: clamp(1.8rem, 4.5vw, 3rem);
}
.about__kicker {
  color: var(--gold);
  font-size: .75rem;
  letter-spacing: .3em;
  margin-bottom: 1.2rem;
}
.about__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  color: var(--acid);
  letter-spacing: .03em;
  margin-bottom: 1.8rem;
}
.about__body {
  font-size: clamp(.95rem, 2vw, 1.05rem);
  line-height: 1.9;
  margin-bottom: 1.2rem;
  color: rgba(243, 234, 219, .95);
  text-shadow: 0 1px 6px rgba(0, 0, 0, .8);
}
.about__foot {
  margin-top: 1.8rem;
  padding-top: 1.1rem;
  border-top: 1px dashed rgba(217, 174, 95, .4);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: .75rem;
  color: var(--gold);
  letter-spacing: .1em;
}

/* ============ OPERATIONS ============ */

.ops {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: clamp(3rem, 8vw, 6rem) 0 clamp(5rem, 10vw, 8rem);
  overflow: hidden;
}
.ops__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url("../assets/ops-bg.webp") center / cover no-repeat #0a0202;
}
.ops__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, .35);
}
.ops__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: 0 clamp(1.25rem, 6vw, 5rem);
}
.ops__head {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}
.ops__jp {
  font-family: var(--font-jp);
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  color: var(--gold-glow);
  text-shadow: 0 0 14px rgba(217, 174, 95, .8), 0 0 40px rgba(217, 174, 95, .5);
}
.ops__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--paper);
  letter-spacing: .03em;
  filter: url(#warp);
}
.ops__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.op {
  background: rgba(5, 2, 2, .88);
  color: var(--paper);
  padding: 1.8rem 1.6rem;
  border: 1px solid #000;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.op:hover {
  transform: translate(-3px, -3px);
  border-color: var(--gold);
  box-shadow: 6px 6px 0 #000;
}
.op__id {
  font-size: .7rem;
  color: var(--red-hot);
  letter-spacing: .25em;
  margin-bottom: .9rem;
}
.op__name {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.45rem;
  letter-spacing: .03em;
  color: var(--gold);
  margin-bottom: .8rem;
}
.op__desc {
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(243, 234, 219, .85);
  margin-bottom: 1.1rem;
}
.op__tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.op__tags span {
  font-size: .68rem;
  letter-spacing: .08em;
  color: var(--gold);
  border: 1px solid rgba(217, 174, 95, .45);
  padding: .2rem .55rem;
}

/* ============ PROLOGUE ============ */

.prologue {
  position: relative;
  z-index: 2; /* above fixed scanlines' multiply won't apply, but keep above bg */
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(5rem, 10vw, 8rem) 1.5rem;
  overflow: hidden;
}
/* aged paper */
.prologue__paper {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(120% 90% at 50% 0%, rgba(122, 96, 62, .28), transparent 60%),
    radial-gradient(140% 100% at 15% 100%, rgba(94, 70, 44, .35), transparent 55%),
    radial-gradient(140% 100% at 88% 90%, rgba(94, 70, 44, .3), transparent 55%),
    linear-gradient(180deg, #E4D6BC 0%, #DDCCAE 50%, #D3C09E 100%);
}
.prologue__paper::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: .18;
  mix-blend-mode: multiply;
}
.prologue__content {
  position: relative;
  z-index: 1;
  max-width: 560px;
  text-align: center;
  color: #4A3C2C;
  font-family: "EB Garamond", serif;
}
.prologue__titlewrap {
  position: relative;
  display: inline-block;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}
.prologue__kanji {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -54%);
  writing-mode: vertical-rl;
  font-family: var(--font-jp);
  font-size: clamp(3.2rem, 7vw, 5rem);
  color: #A31313;
  opacity: .92;
  letter-spacing: .05em;
  pointer-events: none;
}
.prologue__title {
  position: relative;
  font-weight: 400;
  font-size: clamp(2.4rem, 6vw, 4rem);
  letter-spacing: .01em;
  color: #3E3122;
  mix-blend-mode: multiply;
}
.prologue__body {
  font-size: clamp(1.02rem, 2.2vw, 1.2rem);
  line-height: 1.85;
  margin-bottom: 1.6rem;
  color: #4A3C2C;
}
.prologue__body--last { font-style: italic; }
.prologue__seal {
  font-family: var(--font-jp);
  font-size: 1rem;
  color: #6B5940;
  letter-spacing: .4em;
  margin: 2.5rem 0 1.6rem;
}
.prologue__ornament {
  color: #9C7C3C;
  font-size: 1.1rem;
}

/* ============ FOOTER ============ */

.footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: clamp(4rem, 10vw, 7rem) 1.25rem clamp(3rem, 6vw, 4rem);
  background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, .55));
  color: var(--paper);
}
.footer__jp {
  font-family: var(--font-jp);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--gold-glow);
  text-shadow: 0 0 16px rgba(217, 174, 95, .85), 0 0 46px rgba(217, 174, 95, .5);
  margin-bottom: .8rem;
}
.footer__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.4rem, 8vw, 5rem);
  color: var(--acid);
  letter-spacing: .04em;
  margin-bottom: 2.2rem;
  filter: url(#warp);
  display: inline-block;
}
.footer__line {
  font-size: .85rem;
  letter-spacing: .2em;
  color: var(--gold);
  margin-bottom: 1.8rem;
}
.footer__links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1.6rem;
  margin-bottom: 3rem;
}
.footer__links a {
  color: var(--paper);
  text-decoration: none;
  font-size: .9rem;
  letter-spacing: .12em;
  transition: color .2s;
}
.footer__links a:hover { color: var(--acid); }
.footer__meta {
  font-size: .7rem;
  letter-spacing: .15em;
  color: rgba(243, 234, 219, .5);
}

/* ============ SAMURAI FLASH ============ */

.flash {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: url("../assets/flash-samurai.webp") center / cover no-repeat #000;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.flash.alt {
  background-image: url("../assets/flash-samurai-2.webp");
}
.flash.is-on {
  opacity: 1;
  visibility: visible;
  animation: flash-tear .16s steps(3) 1;
}
/* torn/sliced reveal for the horror hit */
@keyframes flash-tear {
  0%   { clip-path: inset(0 0 0 0); filter: contrast(1.4) saturate(.7); transform: scale(1.03) translateX(-6px); }
  33%  { clip-path: polygon(0 0, 100% 0, 100% 34%, 0 30%, 0 55%, 100% 58%, 100% 100%, 0 100%); filter: contrast(1.7) hue-rotate(-12deg); transform: scale(1.05) translateX(8px); }
  66%  { clip-path: inset(0 0 0 0); filter: contrast(1.3) brightness(1.15); transform: scale(1.02) translateX(-3px); }
  100% { clip-path: inset(0 0 0 0); filter: none; transform: scale(1.03); }
}
/* page jolt while the flash is on screen */
.site.is-jolted {
  animation: jolt .16s steps(2) 1;
}
@keyframes jolt {
  0% { transform: translate(4px, -2px) skewX(1.2deg); filter: invert(1) hue-rotate(90deg); }
  50% { transform: translate(-5px, 2px) skewX(-1.5deg); filter: contrast(1.6); }
  100% { transform: none; filter: none; }
}

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

@media (max-width: 760px) {
  .nav { padding: .9rem 1.1rem; }
  .nav__links { gap: 1rem; }
  .nav__links a { font-size: .72rem; }

  .hero__stack { margin: 1.5rem 0 2.5rem; }
  .hero__title { letter-spacing: .26em; margin-right: -.26em; transform: scaleY(1.35); }
  .hero__stray { font-size: .6rem; }
  .hero__stray--ml, .hero__stray--mr { display: none; }

  .ops__head { flex-direction: column; gap: .4rem; align-items: flex-start; }
  .footer__links { gap: 1rem; }
}

@media (max-width: 420px) {
  .hero__sub { letter-spacing: .18em; }
  .hero__stray--tr, .hero__stray--br { display: none; }
  .about__content { padding: 1.4rem 1.1rem; }
}

/* ============ REDUCED MOTION ============ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .glitch::before, .glitch::after,
  .glitch-soft::before,
  .fx--grain,
  .hero__jp,
  .hero__scroll,
  .marquee__track { animation: none; }
  .glitch::before, .glitch::after, .glitch-soft::before { opacity: 0; }
  .glitch-hover:hover { animation: none; }
  .flash, .flash.is-on { display: none; }
  .site.is-jolted { animation: none; }
}