/* ==========================================================================
   KUROIKO / PORTFOLIO — Neo Swiss × Terminal
   Gruvbox Light (cream + faded blue) / Gruvbox Dark (charcoal + bright green).
   Grid-driven, mono/grotesk.
   ========================================================================== */

:root{
  color-scheme: light;
  --bg:             #fbf1c7;
  --paper:          #ebdbb2;
  --ink:            #3c3836;
  --ink-soft:       #665c54;
  --ink-faint:      #928374;
  --accent:         #076678;
  --accent-rgb:     7,102,120;
  --accent-deep:    #054652;
  --accent-soft:    #dde8e6;
  --accent-mid:     #af3a03;
  --on-accent-soft: #054652;
  --surface-dark:   #1d2021;
  --surface-text:   #ebdbb2;
  --term-accent:    #83a598;
  --fg-on-accent:   #fbf1c7;
  --line:           rgba(60,56,54,0.14);
  --line-accent:    rgba(7,102,120,0.18);
  --nav-bg:         rgba(251,241,199,0.86);
  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --display: 'Space Grotesk', 'Hiragino Sans', 'Inter', sans-serif;
  --container: 1280px;
  --gap: 24px;
  --nav-h: 64px;
}

:root[data-theme="dark"]{
  color-scheme: dark;
  --bg:             #282828;
  --paper:          #32302f;
  --ink:            #ebdbb2;
  --ink-soft:       #bdae93;
  --ink-faint:      #928374;
  --accent:         #b8bb26;
  --accent-rgb:     184,187,38;
  --accent-deep:    #98971a;
  --accent-soft:    #32361b;
  --accent-mid:     #fabd2f;
  --on-accent-soft: #fabd2f;
  --surface-dark:   #1d2021;
  --surface-text:   #ebdbb2;
  --term-accent:    #8ec07c;
  --fg-on-accent:   #1d2021;
  --line:           rgba(235,219,178,0.14);
  --line-accent:    rgba(184,187,38,0.3);
  --nav-bg:         rgba(29,32,33,0.86);
}

*, *::before, *::after{ box-sizing:border-box; }
*, *::before, *::after{
  transition: background-color .25s ease, border-color .25s ease, color .25s ease;
}
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--display);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  position:relative;
}

/* faint blueprint grid, whole page */
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background-image:
    linear-gradient(rgba(var(--accent-rgb),0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(var(--accent-rgb),0.05) 1px, transparent 1px);
  background-size:40px 40px;
  mask-image:linear-gradient(to bottom, black, black 60%, transparent 100%);
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; cursor:pointer; }
ul{ list-style:none; margin:0; padding:0; }

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
  position:relative;
}

@media (max-width:640px){
  .container{ padding:0 20px; }
}

/* ---- reveal-on-scroll ---- */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .6s ease, transform .6s ease;
}
[data-reveal].is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
  *, *::before, *::after{ transition:none !important; }
}

/* ---- section chrome (Swiss numbering + rule) ---- */
.section{
  position:relative;
  padding:120px 0 100px;
  border-top:1px solid var(--line);
  z-index:1;
}
.section-head{
  display:flex;
  align-items:baseline;
  gap:20px;
  margin-bottom:56px;
  flex-wrap:wrap;
}
.section-index{
  font-family:var(--mono);
  font-size:14px;
  color:var(--accent);
  letter-spacing:.08em;
  white-space:nowrap;
}
.section-title{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(28px, 4vw, 44px);
  letter-spacing:-0.02em;
  margin:0;
  text-transform:uppercase;
}
.section-title small{
  display:block;
  font-family:var(--mono);
  font-size:13px;
  font-weight:400;
  text-transform:none;
  color:var(--ink-soft);
  letter-spacing:0;
  margin-top:6px;
}
.section-rule{
  flex:1 1 auto;
  height:1px;
  background:var(--line);
  min-width:40px;
}
.cmd-line{
  font-family:var(--mono);
  font-size:14px;
  color:var(--ink-soft);
  margin:0 0 32px;
}
.cmd-line .prompt{ color:var(--accent); }

/* ==========================================================================
   NAV
   ========================================================================== */
.nav{
  position:fixed;
  top:0; left:0; right:0;
  height:var(--nav-h);
  z-index:100;
  background:var(--nav-bg);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav .container{
  height:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.nav-logo{
  font-family:var(--mono);
  font-weight:700;
  font-size:16px;
  letter-spacing:.02em;
}
.nav-logo .cursor{
  display:inline-block;
  width:9px; height:16px;
  background:var(--accent);
  margin-left:2px;
  vertical-align:-2px;
  animation:blink 1s steps(1) infinite;
}
.nav-links{
  display:flex;
  gap:4px;
  font-family:var(--mono);
  font-size:13px;
}
.nav-links a{
  padding:8px 14px;
  color:var(--ink-soft);
  border:1px solid transparent;
  letter-spacing:.04em;
  transition:color .2s, border-color .2s, background .2s;
}
.nav-links a:hover{ color:var(--accent); }
.nav-links a.active{
  color:var(--accent);
  border-color:var(--line-accent);
  background:var(--accent-soft);
}
.nav-links-sep{
  width:1px;
  margin:8px 4px;
  background:var(--line);
}
.nav-external{ color:var(--ink-faint); }
.nav-external .ext-arrow{ display:inline-block; transition:transform .2s; }
.nav-external:hover .ext-arrow{ transform:translate(2px,-2px); }
.nav-status{
  display:flex;
  align-items:center;
  gap:10px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-soft);
  white-space:nowrap;
}
.nav-right{
  display:flex;
  align-items:center;
  gap:14px;
}
.dot{
  width:7px; height:7px;
  border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 0 rgba(var(--accent-rgb),.5);
  animation:pulse 2s infinite;
}
.nav-toggle{
  display:none;
  background:none;
  border:1px solid var(--line);
  color:var(--ink);
  font-family:var(--mono);
  font-size:12px;
  padding:8px 12px;
}
.theme-toggle{
  background:none;
  border:1px solid var(--line);
  color:var(--ink);
  font-family:var(--mono);
  font-size:12px;
  padding:8px 12px;
  white-space:nowrap;
  transition:border-color .2s ease, color .2s ease;
}
.theme-toggle:hover{ border-color:var(--accent); color:var(--accent); }

@keyframes blink{ 50%{ opacity:0; } }
@keyframes pulse{
  0%{ box-shadow:0 0 0 0 rgba(var(--accent-rgb),.45); }
  70%{ box-shadow:0 0 0 7px rgba(var(--accent-rgb),0); }
  100%{ box-shadow:0 0 0 0 rgba(var(--accent-rgb),0); }
}

@media (max-width:900px){
  .nav-status{ display:none; }
  .nav-toggle{ display:block; }
  .nav-links{
    position:fixed;
    top:var(--nav-h);
    left:0; right:0;
    background:var(--bg);
    border-bottom:1px solid var(--line);
    flex-direction:column;
    gap:0;
    display:none;
    padding:8px 0;
  }
  .nav-links.open{ display:flex; }
  .nav-links-sep{ width:auto; height:1px; margin:8px 32px; }
  .nav-links a{ padding:14px 32px; border-bottom:1px solid var(--line); }
}

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  min-height:100vh;
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding-top:var(--nav-h);
  overflow:hidden;
}
.hero .container{ z-index:2; }

.reg-mark{
  position:absolute;
  width:22px; height:22px;
  z-index:1;
  opacity:.5;
}
.reg-mark::before, .reg-mark::after{
  content:"";
  position:absolute;
  background:var(--accent);
}
.reg-mark::before{ width:100%; height:1px; top:50%; left:0; }
.reg-mark::after{ width:1px; height:100%; left:50%; top:0; }
.reg-tl{ top:88px; left:24px; }
.reg-tr{ top:88px; right:24px; }
.reg-bl{ bottom:24px; left:24px; }
.reg-br{ bottom:24px; right:24px; }
@media (max-width:640px){ .reg-mark{ display:none; } }

.term-chrome{
  display:inline-flex;
  align-items:center;
  gap:16px;
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-soft);
  border:1px solid var(--line);
  padding:8px 14px;
  margin-bottom:40px;
  background:var(--paper);
}
.term-dots{ display:flex; gap:6px; }
.term-dots span{
  width:8px; height:8px; border-radius:50%;
  background:var(--ink-faint);
}
.term-dots span:nth-child(1){ background:var(--accent); }

.hero-title{
  position:relative;
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(52px, 12vw, 148px);
  line-height:.92;
  letter-spacing:-0.03em;
  margin:0 0 28px;
  text-transform:uppercase;
}
.hero-title .ghost{
  position:absolute;
  top:5px; left:5px;
  color:var(--accent);
  opacity:.55;
  z-index:-1;
  user-select:none;
}
.hero-tagline{
  font-family:var(--mono);
  font-size:clamp(14px, 1.6vw, 18px);
  color:var(--ink-soft);
  max-width:640px;
  margin:0 0 40px;
  min-height:3.2em;
}
.hero-tagline .prompt{ color:var(--accent); }
.hero-tagline .type-cursor{
  display:inline-block;
  width:8px; height:1.1em;
  background:var(--ink);
  vertical-align:-2px;
  margin-left:2px;
  animation:blink .9s steps(1) infinite;
}

.hero-actions{
  display:flex;
  gap:16px;
  flex-wrap:wrap;
}
.btn-bracket{
  font-family:var(--mono);
  font-size:14px;
  letter-spacing:.04em;
  padding:14px 22px;
  border:1px solid var(--ink);
  color:var(--ink);
  background:var(--bg);
  transition:background .2s, color .2s, border-color .2s;
}
.btn-bracket:hover{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--fg-on-accent);
}
.btn-bracket.primary{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--fg-on-accent);
}
.btn-bracket.primary:hover{
  background:var(--accent-deep);
  border-color:var(--accent-deep);
}

.hero-side{
  position:absolute;
  right:40px;
  top:50%;
  transform:translateY(-50%) rotate(90deg);
  transform-origin:right center;
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
  letter-spacing:.2em;
  display:flex;
  align-items:center;
  gap:12px;
}
@media (max-width:900px){ .hero-side{ display:none; } }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid{
  display:grid;
  grid-template-columns:1.1fr 1fr;
  gap:64px;
  align-items:start;
}
@media (max-width:860px){
  .about-grid{ grid-template-columns:1fr; gap:40px; }
}
.about-quote{
  font-family:var(--display);
  font-weight:500;
  font-size:clamp(22px, 3vw, 32px);
  line-height:1.4;
  margin:0 0 28px;
  border-left:3px solid var(--accent);
  padding-left:24px;
}
.about-body p{
  color:var(--ink-soft);
  margin:0 0 16px;
  max-width:52ch;
}
.about-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:24px;
}
.about-tags span{
  font-family:var(--mono);
  font-size:12px;
  padding:5px 10px;
  border:1px solid var(--line);
  color:var(--ink-soft);
}

.term-card{
  background:var(--surface-dark);
  color:var(--surface-text);
  font-family:var(--mono);
  font-size:13.5px;
  line-height:1.8;
  padding:0;
  border:1px solid var(--line-accent);
  overflow:hidden;
}
.term-card-bar{
  display:flex;
  align-items:center;
  gap:8px;
  padding:10px 14px;
  background:rgba(235,219,178,0.06);
  border-bottom:1px solid rgba(235,219,178,0.1);
  font-size:11px;
  color:rgba(235,219,178,0.55);
}
.term-card-bar .term-dots span{ background:rgba(235,219,178,0.3); }
.term-card-bar .term-dots span:nth-child(1){ background:var(--term-accent); }
.term-card-body{ padding:22px 24px; }
.term-card-body .k{ color:var(--term-accent); }
.term-card-body .out{ color:var(--surface-text); }
.term-card-body .muted{ color:rgba(235,219,178,0.55); }
.term-card-body pre{ margin:0; white-space:pre-wrap; font-family:inherit; }

/* ==========================================================================
   STACK
   ========================================================================== */
.stack-groups{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:40px;
}
@media (max-width:760px){
  .stack-groups{ grid-template-columns:1fr; gap:32px; }
}
.stack-group h3{
  font-family:var(--mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:.08em;
  margin:0 0 16px;
  text-transform:uppercase;
}
.chip-row{ display:flex; flex-wrap:wrap; gap:8px; }
.chip{
  font-family:var(--mono);
  font-size:13px;
  padding:8px 12px;
  border:1px solid var(--line);
  color:var(--ink);
  transition:background .15s, color .15s, border-color .15s;
}
.chip::before{ content:"[x] "; color:var(--accent); }
.chip:hover{ background:var(--ink); color:var(--bg); border-color:var(--ink); }
.chip:hover::before{ color:var(--accent-mid); }

/* ==========================================================================
   PROJECTS
   ========================================================================== */
.project-grid{
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
@media (max-width:980px){ .project-grid{ grid-template-columns:repeat(2, 1fr); } }
@media (max-width:640px){ .project-grid{ grid-template-columns:1fr; } }

.project-card{
  background:var(--bg);
  display:flex;
  flex-direction:column;
  transition:background .2s;
}
.project-card:hover{ background:var(--paper); }
.pc-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  padding:10px 16px;
  border-bottom:1px solid var(--line);
  font-family:var(--mono);
  font-size:11px;
  color:var(--ink-faint);
}
.pc-bar .idx{ color:var(--accent); font-weight:700; }
.pc-body{ padding:20px 16px; flex:1; display:flex; flex-direction:column; }
.pc-title{
  font-family:var(--display);
  font-weight:700;
  font-size:18px;
  margin:0 0 8px;
}
.pc-desc{
  font-size:13.5px;
  color:var(--ink-soft);
  margin:0 0 16px;
  flex:1;
}
.pc-tags{ display:flex; flex-wrap:wrap; gap:6px; margin-bottom:16px; }
.pc-tags span{
  font-family:var(--mono);
  font-size:10.5px;
  padding:3px 7px;
  background:var(--accent-soft);
  color:var(--on-accent-soft);
}
.pc-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--mono);
  font-size:12px;
  padding-top:14px;
  border-top:1px solid var(--line);
}
.pc-star{ color:var(--ink-faint); }
.pc-link{ color:var(--accent); }
.pc-link:hover{ text-decoration:underline; }

.projects-more{
  margin-top:32px;
  display:flex;
  justify-content:center;
}

/* ==========================================================================
   MUSIC
   ========================================================================== */
.music-sub-head{
  display:flex;
  align-items:baseline;
  gap:14px;
  margin:56px 0 24px;
}
.music-sub-head:first-of-type{ margin-top:0; }
.music-sub-head h3{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--ink);
  text-transform:uppercase;
  margin:0;
  padding:4px 10px;
  background:var(--accent-soft);
}
.music-sub-head .section-rule{ height:1px; background:var(--line); flex:1; }

.track-grid{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:24px;
}
@media (max-width:760px){ .track-grid{ grid-template-columns:1fr; } }

.track-card{
  border:1px solid var(--line);
  background:var(--paper);
}
.track-card-head{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  padding:14px 16px 0;
  font-family:var(--mono);
}
.track-card-head .t-title{
  font-family:var(--display);
  font-weight:700;
  font-size:16px;
  color:var(--ink);
}
.track-card-head .t-date{ font-size:11px; color:var(--ink-faint); }
@media (max-width:480px){
  .track-card-head{ flex-direction:column; align-items:flex-start; gap:4px; }
  .track-card-head .t-date{ text-align:left; }
}
.track-embed{ padding:12px 16px 16px; }
.track-embed iframe{ width:100%; border:0; display:block; }
.track-note{
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-soft);
  margin:0 0 16px;
}
.t-badge{
  display:inline-block;
  font-family:var(--mono);
  font-size:9.5px;
  letter-spacing:.05em;
  padding:2px 6px;
  margin-left:6px;
  vertical-align:middle;
  background:var(--accent-soft);
  color:var(--on-accent-soft);
}

.pending-panel{
  border:1px dashed var(--line-accent);
  background:var(--paper);
  padding:32px;
  font-family:var(--mono);
}
.pending-panel .pp-status{
  display:inline-block;
  font-size:12px;
  color:var(--accent);
  border:1px solid var(--line-accent);
  padding:4px 10px;
  margin-bottom:16px;
  letter-spacing:.06em;
}
.pending-panel pre{
  background:var(--surface-dark);
  color:var(--surface-text);
  padding:16px 18px;
  margin:16px 0 0;
  font-size:13px;
  line-height:1.7;
  overflow-x:auto;
}
.pending-panel pre .k{ color:var(--term-accent); }
.pending-panel p{
  font-family:var(--display);
  font-size:14px;
  color:var(--ink-soft);
  margin:0;
  line-height:1.7;
}

.track-list{ display:grid; gap:16px; }
.track-list .track-card{ display:flex; flex-direction:column; }
.audio-native{ width:100%; }

/* ==========================================================================
   CONTACT / FOOTER
   ========================================================================== */
.contact-block{
  display:grid;
  grid-template-columns:1.2fr .8fr;
  gap:48px;
}
@media (max-width:860px){ .contact-block{ grid-template-columns:1fr; } }
.contact-title{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(32px, 5vw, 56px);
  line-height:1.05;
  letter-spacing:-0.02em;
  margin:0 0 20px;
  text-transform:uppercase;
}
.contact-title .accent{ color:var(--accent); }
.contact-links{
  display:flex;
  flex-direction:column;
  gap:0;
}
.contact-links a{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 0;
  border-bottom:1px solid var(--line);
  font-family:var(--mono);
  font-size:15px;
}
.contact-links a .arrow{ color:var(--accent); transition:transform .2s; }
.contact-links a:hover .arrow{ transform:translateX(6px); }
.contact-links a:first-child{ border-top:1px solid var(--line); }

footer{
  border-top:1px solid var(--line);
  padding:28px 0;
  font-family:var(--mono);
  font-size:12px;
  color:var(--ink-faint);
}
footer .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  flex-wrap:wrap;
  gap:8px;
}