/* ============================================================
   aQuarter — Underground booking agency
   Dark editorial / Berlin techno aesthetic. B&W.
   ============================================================ */

:root{
  /* palette — monochrome */
  --black:        #000000;
  --ink:          #0a0a0b;
  --surface:      #0e0e10;
  --surface-2:    #141417;
  --line:         rgba(255,255,255,.10);
  --line-strong:  rgba(255,255,255,.22);
  --fg:           #f4f4f5;
  --fg-dim:       #a6a6ad;
  --fg-faint:     #6c6c74;
  --white:        #ffffff;

  /* type */
  --font-display: "Clash Display", system-ui, sans-serif;
  --font-body:    "Satoshi", system-ui, -apple-system, sans-serif;

  /* spacing (4px base) */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-6:24px;
  --s-8:32px; --s-12:48px; --s-16:64px; --s-20:80px; --s-32:128px;

  --container: 1240px;
  --radius: 2px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--ink);
  color:var(--fg);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{ display:block; max-width:100%; }
[hidden]{ display:none !important; }
a{ color:inherit; text-decoration:none; }
h1,h2,h3{ margin:0; font-family:var(--font-display); font-weight:600; line-height:1.02; letter-spacing:-.02em; }

/* film grain overlay */
.grain{
  position:fixed; inset:0; z-index:9999; pointer-events:none;
  opacity:.05; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Header ---------- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:100;
  display:flex; align-items:center; justify-content:space-between;
  gap:var(--s-8);
  padding:18px clamp(20px,5vw,56px);
  background:linear-gradient(to bottom, rgba(10,10,11,.82), rgba(10,10,11,0));
  backdrop-filter:blur(2px);
  transition:background .4s var(--ease), padding .4s var(--ease);
}
.site-header.scrolled{
  background:rgba(10,10,11,.88);
  backdrop-filter:blur(12px) saturate(1.1);
  border-bottom:1px solid var(--line);
  padding-top:12px; padding-bottom:12px;
}
.brand{ display:flex; align-items:center; gap:10px; color:var(--white); }
.brand-mark{ flex:none; }
.brand-name{
  font-family:var(--font-display); font-weight:600; font-size:21px;
  letter-spacing:-.01em;
}
.site-nav{ display:flex; gap:var(--s-8); margin-left:auto; }
.site-nav a{
  font-size:14px; letter-spacing:.04em; text-transform:uppercase;
  color:var(--fg-dim); position:relative; padding:4px 0;
  transition:color .25s var(--ease);
}
.site-nav a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:1px; width:0;
  background:var(--white); transition:width .3s var(--ease);
}
.site-nav a:hover{ color:var(--white); }
.site-nav a:hover::after{ width:100%; }

.header-cta{
  font-size:13px; letter-spacing:.05em; text-transform:uppercase;
  border:1px solid var(--line-strong); padding:9px 18px; border-radius:var(--radius);
  color:var(--white); transition:background .25s var(--ease), color .25s var(--ease);
}
.header-cta:hover{ background:var(--white); color:var(--black); }

.nav-toggle{ display:none; }

/* mobile menu */
.mobile-menu{
  position:fixed; inset:0; z-index:90;
  background:rgba(8,8,9,.97); backdrop-filter:blur(10px);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:var(--s-8); opacity:0; pointer-events:none; transition:opacity .35s var(--ease);
}
.mobile-menu.open{ opacity:1; pointer-events:auto; }
.mobile-menu a{
  font-family:var(--font-display); font-size:clamp(34px,9vw,56px); font-weight:500;
  color:var(--fg); letter-spacing:-.02em;
}

/* ---------- Hero ---------- */
.hero{ position:relative; min-height:100svh; display:flex; align-items:flex-end; }
.hero-media{ position:absolute; inset:0; z-index:-1; }
.hero-media img{ width:100%; height:100%; object-fit:cover; filter:grayscale(1) contrast(1.05); }
.hero-scrim{
  position:absolute; inset:0;
  background:
    linear-gradient(to top, rgba(10,10,11,1) 4%, rgba(10,10,11,.2) 45%, rgba(10,10,11,.55) 100%),
    radial-gradient(120% 80% at 50% 30%, transparent 30%, rgba(10,10,11,.65) 100%);
}
.hero-content{
  width:100%; max-width:var(--container); margin:0 auto;
  padding:0 clamp(20px,5vw,56px) clamp(72px,12vh,140px);
}
.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;
}
.eyebrow{
  font-size:13px; letter-spacing:.22em; text-transform:uppercase;
  color:var(--fg-dim); margin:0 0 var(--s-8);
}
.hero-title{
  font-size:clamp(56px,12vw,160px); font-weight:600;
  letter-spacing:-.04em; line-height:.92; color:var(--white);
  margin-bottom:var(--s-8);
}
.hero-lede{
  max-width:46ch; font-size:clamp(16px,2vw,20px); color:var(--fg-dim);
  margin:0 0 var(--s-12);
}
.hero-actions{ display:flex; flex-wrap:wrap; gap:var(--s-4); }
.hero-scroll{
  position:absolute; right:clamp(20px,5vw,56px); bottom:40px;
  writing-mode:vertical-rl; font-size:12px; letter-spacing:.25em; text-transform:uppercase;
  color:var(--fg-faint);
}
.hero-scroll span{ position:relative; padding-bottom:38px; }
.hero-scroll span::after{
  content:""; position:absolute; left:50%; bottom:0; width:1px; height:28px;
  background:linear-gradient(var(--fg-faint), transparent);
  animation:scrollline 2s var(--ease) infinite;
}
@keyframes scrollline{ 0%{transform:scaleY(0);transform-origin:top} 50%{transform:scaleY(1)} 100%{transform:scaleY(0);transform-origin:bottom} }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  font-size:14px; letter-spacing:.05em; text-transform:uppercase; font-weight:500;
  padding:14px 28px; border-radius:var(--radius); border:1px solid transparent;
  cursor:pointer; transition:transform .2s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--white); color:var(--black); }
.btn-primary:hover{ background:#e3e3e3; }
.btn-ghost{ border-color:var(--line-strong); color:var(--white); }
.btn-ghost:hover{ background:rgba(255,255,255,.06); border-color:var(--white); }
.btn.full{ width:100%; }

/* ---------- Manifesto ---------- */
.manifesto{
  max-width:var(--container); margin:0 auto;
  padding:clamp(72px,12vh,140px) clamp(20px,5vw,56px);
  border-bottom:1px solid var(--line);
}
.manifesto p{
  font-family:var(--font-display); font-weight:400;
  font-size:clamp(24px,4vw,46px); line-height:1.18; letter-spacing:-.02em;
  color:var(--fg); max-width:20ch; margin:0;
}
.manifesto p { max-width:24ch; }

/* ---------- Sections ---------- */
.section{ max-width:var(--container); margin:0 auto; padding:clamp(72px,11vh,128px) clamp(20px,5vw,56px); }
.section-head{ margin-bottom:var(--s-16); }
.section-index{
  display:inline-block; font-size:13px; letter-spacing:.2em; color:var(--fg-faint);
  margin-bottom:var(--s-3);
}
.section-title{ font-size:clamp(40px,7vw,84px); color:var(--white); line-height:.95; }
.section-sub{ color:var(--fg-dim); margin:var(--s-3) 0 0; font-size:18px; }

/* ---------- Roster ---------- */
.roster-grid{
  display:grid; grid-template-columns:repeat(2,1fr); gap:clamp(20px,3vw,40px) clamp(20px,4vw,56px);
}
.artist-media{ position:relative; overflow:hidden; aspect-ratio:3/4; background:var(--surface-2); }
.artist-media img{
  width:100%; height:100%; object-fit:cover; filter:grayscale(1) contrast(1.04);
  transition:transform .7s var(--ease), filter .5s var(--ease);
}
.artist:hover .artist-media img{ transform:scale(1.04); filter:grayscale(1) contrast(1.1) brightness(1.05); }
.artist-tag{
  position:absolute; top:14px; left:14px;
  font-size:11px; letter-spacing:.14em; text-transform:uppercase;
  padding:5px 10px; background:rgba(0,0,0,.6); border:1px solid var(--line);
  color:var(--fg); backdrop-filter:blur(4px);
}
.artist-meta{ padding-top:var(--s-6); }
.artist-meta h3{ font-size:clamp(24px,3vw,34px); color:var(--white); }
.artist-style{ font-size:13px; letter-spacing:.1em; text-transform:uppercase; color:var(--fg-dim); margin:var(--s-2) 0 var(--s-3); }
.artist-bio{ color:var(--fg-faint); max-width:42ch; margin:0; }

/* ---------- Events ---------- */
.event-list{ list-style:none; margin:0; padding:0; border-top:1px solid var(--line); }
.event{
  display:grid; grid-template-columns:96px 1fr auto auto; align-items:center;
  gap:var(--s-8); padding:var(--s-8) 0; border-bottom:1px solid var(--line);
  transition:padding-left .35s var(--ease), background .35s var(--ease);
}
.event:hover{ padding-left:14px; background:linear-gradient(90deg, rgba(255,255,255,.03), transparent 60%); }
.event.muted{ opacity:.55; }
.event-date{ display:flex; flex-direction:column; line-height:1; }
.event-date .d{ font-family:var(--font-display); font-size:40px; font-weight:600; color:var(--white); }
.event-date .m{ font-size:13px; letter-spacing:.14em; text-transform:uppercase; color:var(--fg-dim); margin-top:6px; }
.event-info h3{ font-size:clamp(20px,2.4vw,28px); color:var(--fg); }
.event-where{ color:var(--fg-faint); margin:6px 0 0; font-size:15px; }
.event-line{ color:var(--fg-dim); font-size:14px; letter-spacing:.04em; text-transform:uppercase; }
.event-cta{
  font-size:13px; letter-spacing:.05em; text-transform:uppercase;
  border:1px solid var(--line-strong); padding:9px 18px; border-radius:var(--radius);
  white-space:nowrap; transition:background .25s var(--ease), color .25s var(--ease);
}
.event-cta:hover{ background:var(--white); color:var(--black); }

/* ---------- Bookings ---------- */
.bookings{
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(32px,5vw,80px); align-items:start;
}
.bookings-media{ position:sticky; top:96px; aspect-ratio:4/5; overflow:hidden; background:var(--surface-2); }
.bookings-media img{ width:100%; height:100%; object-fit:cover; filter:grayscale(1) contrast(1.05); }
.bookings-content .section-title{ margin-top:var(--s-3); }
.bookings-lede{ color:var(--fg-dim); font-size:18px; margin:var(--s-6) 0 var(--s-12); max-width:46ch; }

.booking-form{ display:grid; grid-template-columns:1fr 1fr; gap:var(--s-4); }
.field{ display:flex; flex-direction:column; gap:var(--s-2); }
.field.full{ grid-column:1 / -1; }
label{ font-size:12px; letter-spacing:.12em; text-transform:uppercase; color:var(--fg-dim); }
input, select, textarea{
  font-family:var(--font-body); font-size:16px; color:var(--fg);
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:13px 14px; transition:border-color .25s var(--ease), background .25s var(--ease);
  width:100%;
}
input:focus, select:focus, textarea:focus{
  outline:none; border-color:var(--line-strong); background:var(--surface-2);
}
textarea{ resize:vertical; }
select{ appearance:none; cursor:pointer; }
.form-note{ grid-column:1 / -1; margin:0; font-size:14px; color:var(--fg-dim); }
.form-note.ok{ color:#bdebc9; }
.booking-direct{ margin-top:var(--s-8); color:var(--fg-faint); }
.booking-direct a{ color:var(--fg); border-bottom:1px solid var(--line-strong); padding-bottom:1px; }
.booking-direct a:hover{ color:var(--white); }

/* ---------- Footer ---------- */
.site-footer{
  border-top:1px solid var(--line);
  max-width:var(--container); margin:0 auto;
  padding:clamp(48px,8vh,80px) clamp(20px,5vw,56px);
  display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:var(--s-8);
}
.footer-brand{ display:flex; align-items:center; gap:12px; color:var(--white); font-family:var(--font-display); font-size:22px; }
.footer-nav{ display:flex; flex-wrap:wrap; gap:var(--s-8); }
.footer-nav a{ font-size:14px; letter-spacing:.04em; text-transform:uppercase; color:var(--fg-dim); transition:color .25s var(--ease); }
.footer-nav a:hover{ color:var(--white); }
.footer-fine{ width:100%; margin:var(--s-6) 0 0; padding-top:var(--s-8); border-top:1px solid var(--line); color:var(--fg-faint); font-size:13px; letter-spacing:.04em; }

/* ---------- Reveal animation ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  .hero-scroll span::after{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .bookings{ grid-template-columns:1fr; }
  .bookings-media{ position:relative; top:0; aspect-ratio:16/10; }
}
@media (max-width:760px){
  .site-nav, .header-cta{ display:none; }
  .nav-toggle{
    display:flex; flex-direction:column; gap:6px; background:none; border:0; cursor:pointer;
    padding:8px; margin-left:auto;
  }
  .nav-toggle span{ width:26px; height:2px; background:var(--white); transition:transform .3s var(--ease), opacity .3s var(--ease); }
  .nav-toggle[aria-expanded="true"] span:first-child{ transform:translateY(8px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:last-child{ transform:translateY(-0px) rotate(-45deg); }
  .roster-grid{ grid-template-columns:1fr; }
  .event{ grid-template-columns:64px 1fr; grid-template-areas:"date info" "date line" "cta cta"; gap:var(--s-2) var(--s-6); }
  .event-date{ grid-area:date; }
  .event-info{ grid-area:info; }
  .event-line{ grid-area:line; }
  .event-cta{ grid-area:cta; justify-self:start; margin-top:var(--s-3); }
  .event-date .d{ font-size:30px; }
  .booking-form{ grid-template-columns:1fr; }
}