/* Grafiti Studio — onepager
   Clean, responsive, CMYK-accented UI
*/

:root{
  --bg0: #0b0f1a;
  --bg1: #0c1326;
  --card: rgba(255,255,255,.08);
  --card2: rgba(255,255,255,.10);
  --stroke: rgba(255,255,255,.14);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --muted2: rgba(255,255,255,.62);
  --shadow: 0 22px 60px rgba(0,0,0,.45);
  --shadow2: 0 14px 30px rgba(0,0,0,.35);

  --c: #00A3E0;
  --m: #E6007E;
  --y: #FFDD00;
  --k: #111827;

  --radius: 18px;
  --radius2: 26px;
  --container: 1100px;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
 background:
  radial-gradient(80vw 80vh at 20% 20%, #172554 0%, transparent 60%),
  radial-gradient(80vw 80vh at 80% 20%, #3b0a2a 0%, transparent 60%),
  linear-gradient(180deg, var(--bg0), var(--bg1));
  background-attachment: fixed;
  background-repeat: no-repeat;
  background-size: cover;
  overflow-x: hidden;
}

a{ color: inherit; text-decoration: none; }
.link{
  color: rgba(255,255,255,.92);
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,.35);
  text-underline-offset: 3px;
}
.link:hover{ text-decoration-color: rgba(255,255,255,.75); }

.container{
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.bg{ position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.bg__layer{ position:absolute; inset:-140px; transform: translate3d(0,0,0); will-change: transform; }
.bg__layer--mesh{
  background:
    radial-gradient(600px 380px at 20% 20%, rgba(0,163,224,.14), transparent 60%),
    radial-gradient(560px 360px at 80% 30%, rgba(230,0,126,.12), transparent 58%),
    radial-gradient(520px 360px at 60% 85%, rgba(255,221,0,.11), transparent 60%);
  filter: blur(16px);
  opacity: .95;
}
.bg__layer--glow{
  inset:-220px;
  background:
    radial-gradient(900px 520px at 10% 40%, rgba(255,255,255,.06), transparent 70%),
    radial-gradient(760px 460px at 90% 15%, rgba(255,255,255,.05), transparent 68%),
    radial-gradient(820px 520px at 60% 92%, rgba(255,255,255,.04), transparent 72%);
  filter: blur(10px);
  opacity: .75;
}
.bg__layer--dots{
  inset:0;
  opacity: .20;
  background-image: radial-gradient(rgba(255,255,255,.9) 1px, transparent 1px);
  background-size: 18px 18px;
  mask-image: radial-gradient(900px 560px at 40% 25%, black 0%, transparent 70%);
}

.header{
  position: relative;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: linear-gradient(180deg, rgba(9,12,20,.72), rgba(9,12,20,.42));
  border-bottom: 1px solid rgba(255,255,255,.10);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand{ display:flex; align-items:center; gap: 12px; }
.brand__logo{
  height: 42px;
  width: auto;
  filter: drop-shadow(0 10px 18px rgba(0,0,0,.35));
}

.nav{
  display:flex;
  align-items:center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav__link{
  font-weight: 600;
  color: rgba(255,255,255,.86);
  padding: 10px 12px;
  border-radius: 12px;
}
.nav__link:hover{
  background: rgba(255,255,255,.07);
  color: rgba(255,255,255,.96);
}
.nav__btn{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.06);
  color: rgba(255,255,255,.92);
  font-weight: 700;
  cursor: pointer;
}
.nav__btn:hover{ background: rgba(255,255,255,.09); }
.nav__chev{ transition: transform .18s ease; }
.nav__btn[aria-expanded="true"] .nav__chev{ transform: rotate(180deg); }

.main{ position: relative; z-index: 1; }

.hero{
  padding: 42px 0 10px;
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 26px;
  align-items: stretch;
}

.hero__card{
  border-radius: var(--radius2);
  background: linear-gradient(180deg, rgba(255,255,255,.10), rgba(255,255,255,.06));
  border: 1px solid rgba(255,255,255,.14);
  box-shadow: var(--shadow);
  padding: 26px;
  position: relative;
  overflow: hidden;
}
.hero__card::before{
  content:"";
  position:absolute; inset:-2px;
  background: radial-gradient(600px 280px at 20% 15%, rgba(0,163,224,.20), transparent 60%),
              radial-gradient(520px 280px at 70% 25%, rgba(230,0,126,.18), transparent 58%),
              radial-gradient(420px 240px at 55% 85%, rgba(255,221,0,.14), transparent 60%);
  opacity: .55;
  filter: blur(8px);
  z-index: 0;
}
.hero__card > *{ position: relative; z-index: 1; }

.kicker{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  color: rgba(255,255,255,.80);
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
  font-size: .78rem;
}
.kicker__dot{
  width: 10px; height: 10px; border-radius: 100px;
  background: linear-gradient(90deg, var(--c), var(--m), var(--y));
  box-shadow: 0 10px 24px rgba(0,0,0,.35);
}

.hero__title{
  margin: 12px 0 8px;
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}
.hero__subtitle{
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.55;
  max-width: 60ch;
}

.cmyk{
  display:flex;
  gap: 6px;
  margin: 12px 0 18px;
}
.cmyk span{
  height: 10px; width: 46px;
  border-radius: 999px;
  box-shadow: 0 10px 18px rgba(0,0,0,.30);
}
.cmyk__c{ background: var(--c); }
.cmyk__m{ background: var(--m); }
.cmyk__y{ background: var(--y); }
.cmyk__k{ background: var(--k); }

.hero__cta{
  display:flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 6px 0 18px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  font-weight: 800;
  letter-spacing: .01em;
  border: 1px solid rgba(255,255,255,.14);
  cursor: pointer;
  transition: transform .06s ease, background .18s ease, border-color .18s ease;
}
.btn:active{ transform: translateY(1px); }
.btn--primary{
  background: linear-gradient(90deg, rgba(0,163,224,.95), rgba(230,0,126,.85));
  border-color: #333333;
}
.btn--primary:hover{
  background: linear-gradient(90deg, rgba(0,163,224,1), rgba(230,0,126,.95));
}
.btn--ghost{
  background: rgba(255,255,255,.06);
  border-color: #333333;
}
.btn--ghost:hover{
  background: rgba(255,255,255,.10);
}

.meta{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.12);
}
.meta__label{
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--muted2);
  font-weight: 800;
}
.meta__value{
  margin-top: 5px;
  font-size: .98rem;
  color: rgba(255,255,255,.92);
}
.mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; }

.hero__visual{
  border-radius: var(--radius2);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.05);
  box-shadow: var(--shadow2);
  min-height: 320px;
}
.visual{
  position: relative;
  height: 100%;
}
.visual__img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
}
.visual__glow{
  position:absolute; inset: 0;
  background: radial-gradient(600px 300px at 25% 30%, rgba(0,163,224,.15), transparent 60%),
              radial-gradient(560px 300px at 80% 25%, rgba(230,0,126,.12), transparent 58%),
              radial-gradient(520px 320px at 70% 80%, rgba(255,221,0,.12), transparent 60%);
  mix-blend-mode: screen;
  opacity: .7;
}

.section{
  padding: 26px 0 18px;
}
.section--tight{ padding-top: 10px; }

.section__header{
  display:flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px;
  margin-bottom: 14px;
}
.section__title{
  margin: 0;
  font-size: 1.4rem;
  letter-spacing: -0.01em;
}
.section__desc{
  margin: 0;
  color: var(--muted);
  max-width: 60ch;
}

.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.card{
  border-radius: var(--radius);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  padding: 16px;
}
.card__title{
  margin: 0 0 8px;
  font-size: 1.06rem;
}
.card__text{
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

.accordion{
  border-radius: var(--radius2);
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  overflow: hidden;
}
.accordion__toggle{
  width: 100%;
  display:flex;
  align-items:center;
  gap: 12px;
  padding: 16px 18px;
  background: transparent;
  border: 0;
  color: rgba(255,255,255,.92);
  cursor: pointer;
  text-align: left;
}
.accordion__title{
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: -0.01em;
}
.accordion__hint{
  margin-left: auto;
  color: var(--muted2);
  font-weight: 700;
  font-size: .9rem;
}
.accordion__chev{
  margin-left: 6px;
  transition: transform .18s ease;
}
.accordion__toggle[aria-expanded="true"] .accordion__chev{
  transform: rotate(180deg);
}
.accordion__panel{
  padding: 0 18px 16px;
  border-top: 1px solid rgba(255,255,255,.10);
}

.booklist{
  margin: 14px 0 8px;
  padding: 0 0 0 18px;
}
.booklist__link{
  display:inline-block;
  padding: 6px 0;
  color: rgba(255,255,255,.92);
  text-decoration: underline;
  text-decoration-color: rgba(255,255,255,.25);
  text-underline-offset: 3px;
}
.booklist__link:hover{ text-decoration-color: rgba(255,255,255,.75); }

.note{
  margin: 0;
  color: var(--muted2);
  font-size: .92rem;
  line-height: 1.5;
}

.footer{
  padding: 18px 0 30px;
  color: rgba(255,255,255,.68);
}
.footer__inner{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255,255,255,.10);
  padding-top: 14px;
}

/* Responsive */
@media (max-width: 980px){
  .hero__grid{ grid-template-columns: 1fr; }
  .hero__visual{ min-height: 260px; }
  .meta{ grid-template-columns: 1fr; }
  .cards{ grid-template-columns: 1fr; }
  .section__header{ flex-direction: column; align-items: flex-start; }
  .nav{ gap: 8px; }
}

@media (max-width: 520px){
  .container{ width: min(var(--container), calc(100% - 24px)); }
  .brand__logo{ height: 38px; }
  .hero__card{ padding: 18px; }
  .nav__link{ padding: 8px 10px; }
  .nav__btn{ padding: 9px 10px; }
}