/* ====== 0sense — nihilism/existentialism themed site ====== */
:root{
  --bg:#0b0b0f;
  --bg-alt:#111119;
  --text:#e7e7ea;
  --muted:#9a9aa3;
  --accent:#7b00ff; /* electric purple */
  --accent-2:#ff2a6d; /* hot magenta */
  --card:#151522;
  --edge:#222233;
  --shadow:rgba(0,0,0,.5);
  --radius:14px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}
@media (prefers-color-scheme: light){
  :root{ --bg:#f7f7fb; --text:#0b0b0f; --muted:#555566; --card:#ffffff; --edge:#e4e4ee; --shadow:rgba(0,0,0,.08); }
}

*{ box-sizing:border-box }
html,body{ height:100% }
body{
  margin:0;
  background:radial-gradient(1200px 600px at 80% -10%, rgba(123,0,255,.2), transparent 60%),
             radial-gradient(800px 400px at -10% 10%, rgba(255,42,109,.08), transparent 60%),
             var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
  letter-spacing:.2px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

a{ color:var(--text); text-decoration:none }
a:hover{ color:var(--accent) }

.wrap{ width:min(1100px, 92%); margin-inline:auto; }
.wrap.narrow{ width:min(800px, 92%) }

/* Header */
.site-header{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:1rem;
  justify-content:space-between;
  padding: .9rem 4vw;
  backdrop-filter: blur(8px);
  background: linear-gradient(to bottom, rgba(11,11,15,.75), rgba(11,11,15,.45));
  border-bottom:1px solid rgba(255,255,255,.05);
}
.brand{ display:flex; align-items:center; gap:.8rem; font-weight:700; letter-spacing:.8px }
.brand-mark{ width:28px; height:28px; filter:drop-shadow(0 0 6px rgba(123,0,255,.6)) }
.brand-text{ font-family:var(--mono); font-size:1.1rem }
.brand-sub{ color:var(--muted); font-size:.8rem; margin-left:.3rem }

.site-nav{ display:flex; gap:1rem; align-items:center }
.site-nav a{ padding:.45rem .7rem; border-radius:10px; border:1px solid transparent }
.site-nav a:hover{ border-color:var(--edge); background:rgba(255,255,255,.02) }

.actions{ display:flex; gap:.6rem; align-items:center }
.theme-toggle, .nav-toggle{
  appearance:none; border:1px solid var(--edge); background:transparent; color:var(--text);
  padding:.5rem; border-radius:10px; cursor:pointer
}
.theme-toggle .icon-sun{ display:none }
html[data-theme="light"] .theme-toggle .icon-sun{ display:block }
html[data-theme="light"] .theme-toggle .icon-moon{ display:none }

.nav-toggle{ display:none }
@media (max-width: 860px){
  .nav-toggle{ display:block }
  .site-nav{ position:absolute; right:4vw; top:64px; flex-direction:column; align-items:flex-start;
    background:var(--bg-alt); padding:.6rem; border-radius:12px; border:1px solid var(--edge); display:none }
  .site-nav[aria-expanded="true"]{ display:flex }
}

/* Footer */
.site-footer{ margin-top:6rem; padding:2rem 4vw; border-top:1px solid var(--edge); color:var(--muted); text-align:center }
.site-footer .mono{ font-family:var(--mono) }
.small{ font-size:.9rem; opacity:.8 }

/* Hero */
.hero{ padding:8rem 0 4rem; text-align:center }
.tagline{ color:var(--muted) }
.cta-row{ margin-top:1.6rem; display:flex; gap:1rem; justify-content:center }
.cta, .ghost{
  display:inline-block; padding:.9rem 1.1rem; border-radius:12px; border:1px solid var(--edge);
  font-weight:600; letter-spacing:.4px; box-shadow:0 10px 30px var(--shadow);
}
.cta{ background:linear-gradient(135deg, var(--accent), var(--accent-2)); color:white }
.ghost{ background:transparent }
.ghost:hover{ border-color:var(--accent); color:var(--accent) }

/* Glitch heading */
.glitch{ position:relative; font-family:var(--mono); font-size:clamp(3rem, 10vw, 9rem); line-height:1.05; letter-spacing:2px; margin:0 0 .5rem }
.glitch.small{ font-size:clamp(2.4rem, 10vw, 6rem) }
.glitch::before, .glitch::after{
  content:attr(data-text);
  position:absolute; inset:0; pointer-events:none; mix-blend-mode:screen;
}
.glitch::before{ transform:translate(-2px,-1px); color:var(--accent) }
.glitch::after{ transform:translate(2px,1px); color:var(--accent-2) }
@media (prefers-reduced-motion:no-preference){
  @keyframes glitch-shift{
    0%,100%{ transform:translate(0,0) }
    20%{ transform:translate(2px,-.10px) }
    40%{ transform:translate(-2px,.16px) }
    60%{ transform:translate(2px,.10px) }
    80%{ transform:translate(-.16px,-.12px) }
  }
  .glitch::before, .glitch::after{ animation:glitch-shift 2s infinite linear }
}

/* Cards & grids */
.grid{ display:grid; gap:1rem; margin:2rem 0 }
.grid.two{ grid-template-columns: repeat(auto-fit, minmax(260px,1fr)) }
.grid.three{ grid-template-columns: repeat(auto-fit, minmax(220px,1fr)) }

.card{
  display:block; padding:1.1rem 1.1rem 1.2rem; border-radius:var(--radius);
  background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.01));
  border:1px solid var(--edge);
  box-shadow: 0 12px 28px var(--shadow), inset 0 1px 0 rgba(255,255,255,.03);
  transition: transform .18s ease, border-color .18s ease;
}
.card:hover{ transform: translateY(-3px); border-color: var(--accent) }
.card h2{ margin:.3rem 0 }
.chip{ display:inline-block; font-family:var(--mono); font-size:.8rem; color:var(--muted); border:1px solid var(--edge); padding:.2rem .5rem; border-radius:999px }

/* Page head / filters */
.page-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:1rem; flex-wrap:wrap; margin-top:2rem }
.filters{ display:flex; gap:.8rem; align-items:center; flex-wrap:wrap }
#search{ padding:.6rem .8rem; border-radius:10px; border:1px solid var(--edge); background:var(--bg-alt); color:var(--text); min-width:220px }
.tag{ border:1px solid var(--edge); background:transparent; color:var(--text); padding:.35rem .6rem; border-radius:999px; cursor:pointer }
.tag.active{ border-color:var(--accent); color:var(--accent) }

/* Lists / items */
.list{ display:grid; gap:1.2rem; margin:2rem 0 4rem }
.item{ padding:1rem 1.1rem; background:var(--card); border:1px solid var(--edge); border-radius:14px }
.item h2{ margin:.2rem 0 .4rem }
.meta{ color:var(--muted); font-size:.92rem }
.excerpt{ color:var(--text) }

/* Notes masonry */
.masonry{ column-width: 320px; column-gap: 1rem; margin-top:1.8rem }
.note{ display:inline-block; width:100%; margin:0 0 1rem; padding:1rem; background:var(--card); border:1px solid var(--edge); border-radius:12px }
.note h2{ margin:.2rem 0 .4rem }

/* Prose */
.prose h2{ margin-top:1.6rem }
.prose ul{ padding-left:1.2rem }
.prose code{ font-family:var(--mono); background:rgba(255,255,255,.06); padding:.15rem .35rem; border-radius:6px }

/* Accessibility */
.sr-only{ position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0 }

/* Subtle film grain / noise overlay */
[data-noise]{
  position:relative;
  isolation:isolate;
}
[data-noise]::after{
  content:""; position:absolute; inset:0; pointer-events:none; z-index:-1;
  background: repeating-conic-gradient(from 0deg, rgba(255,255,255,.02) 0 2deg, transparent 2deg 4deg);
  mix-blend-mode: overlay; opacity:.45;
  filter: contrast(120%) saturate(110%) blur(.2px);
}

/* Selection */
::selection{ background: var(--accent); color:white }

/* Utility */
.center{ text-align:center }
.pad-xl{ padding: 4rem 0 }
.muted{ color:var(--muted) }