/* SIDANG — design & AI conference demo · Website by ZNO AI */
:root{
  --bg:#0b0b12; --bg-2:#12121d; --panel:#171826; --panel-2:#1e1f30;
  --ink:#f4f3fb; --muted:#a6a5c4; --faint:#6f6e8f;
  --violet:#7c5cff; --violet-2:#9d86ff; --violet-deep:#5b3ee0;
  --lime:#c6f24e; --lime-deep:#a8d92f;
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
  --display:'Syne',system-ui,sans-serif;
  --sans:'Inter',system-ui,sans-serif;
  --maxw:1200px; --r:20px; --r-sm:14px;
  --shadow:0 24px 60px -30px rgba(0,0,0,.8);
  --glow:0 0 0 1px rgba(124,92,255,.4),0 20px 60px -20px rgba(124,92,255,.5);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;
  line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--display);margin:0;font-weight:700;line-height:1.02;letter-spacing:-.02em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}
.eyebrow{font-family:var(--sans);font-weight:700;font-size:.72rem;letter-spacing:.24em;text-transform:uppercase;color:var(--violet-2)}
.grad{background:linear-gradient(100deg,var(--violet-2),var(--lime));-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;gap:.5rem;border:0;cursor:pointer;font-family:var(--sans);
  font-weight:700;font-size:.95rem;padding:.9rem 1.5rem;border-radius:999px;transition:.2s;white-space:nowrap}
.btn-primary{background:var(--lime);color:#12121d}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 30px -12px rgba(198,242,78,.6)}
.btn-violet{background:var(--violet);color:#fff}
.btn-violet:hover{background:var(--violet-deep);transform:translateY(-2px)}
.btn-ghost{background:transparent;border:1.5px solid var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--violet-2);color:var(--violet-2)}

/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(11,11,18,.78);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:.55rem;font-family:var(--display);font-weight:800;font-size:1.4rem;letter-spacing:-.01em}
.brand .dot{width:12px;height:12px;border-radius:50%;background:var(--lime);box-shadow:0 0 14px var(--lime)}
.nav{display:flex;gap:2rem;align-items:center}
.nav a{font-size:.93rem;font-weight:500;color:var(--muted)}
.nav a:hover{color:var(--ink)}
.hdr-cta{display:flex;align-items:center;gap:.8rem}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px}
.mobile{display:none;flex-direction:column;gap:.3rem;padding:1rem 24px 1.4rem;background:var(--panel);border-bottom:1px solid var(--line)}
.mobile.open{display:flex}
.mobile a{padding:.6rem 0;font-weight:500;color:var(--muted);border-bottom:1px solid var(--line)}

/* hero */
.hero{position:relative;overflow:hidden;padding:4.5rem 0 4rem}
.hero::before{content:'';position:absolute;top:-30%;left:-10%;width:60%;height:120%;
  background:radial-gradient(circle,rgba(124,92,255,.28),transparent 60%);filter:blur(30px);z-index:0}
.hero::after{content:'';position:absolute;bottom:-40%;right:-10%;width:55%;height:120%;
  background:radial-gradient(circle,rgba(198,242,78,.14),transparent 60%);filter:blur(30px);z-index:0}
.hero-in{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:center}
.hero-copy .chips{display:flex;gap:.6rem;flex-wrap:wrap;margin:1.2rem 0 0}
.chip{font-family:var(--sans);font-weight:600;font-size:.8rem;color:var(--muted);background:var(--panel);
  border:1px solid var(--line);border-radius:999px;padding:.4rem .9rem;display:flex;align-items:center;gap:.4rem}
.chip svg{width:15px;height:15px;color:var(--violet-2)}
.hero h1{font-size:clamp(2.8rem,6.6vw,5.4rem);letter-spacing:-.03em}
.hero p{color:var(--muted);font-size:1.15rem;max-width:44ch;margin:1.3rem 0 1.8rem}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap}
.hero-fig{position:relative;border-radius:var(--r);overflow:hidden;border:1px solid var(--line-2);box-shadow:var(--glow);aspect-ratio:3/2.4}
.hero-fig img{width:100%;height:100%;object-fit:cover}
.hero-fig .tagpill{position:absolute;left:1rem;bottom:1rem;background:rgba(11,11,18,.75);backdrop-filter:blur(8px);
  border:1px solid var(--line-2);border-radius:999px;padding:.5rem 1rem;font-weight:600;font-size:.82rem}

/* countdown */
.count{display:flex;gap:.7rem;margin-top:2rem}
.cd{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);padding:.9rem 0;text-align:center;flex:1;position:relative;overflow:hidden}
.cd::after{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--violet),var(--lime))}
.cd b{display:block;font-family:var(--display);font-size:2.2rem;font-weight:800;line-height:1;color:var(--ink);font-variant-numeric:tabular-nums}
.cd span{font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);font-weight:700}

/* sections */
section{padding:5rem 0;position:relative}
.sec-head{margin-bottom:2.4rem}
.sec-head h2{font-size:clamp(2rem,4vw,3.1rem)}
.sec-head p{color:var(--muted);max-width:52ch;margin:.7rem 0 0}

/* agenda */
.day-tabs{display:flex;gap:.6rem;margin-bottom:1.6rem;flex-wrap:wrap}
.day-tab{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-sm);padding:.8rem 1.3rem;
  cursor:pointer;text-align:left;transition:.2s;color:var(--muted);min-width:150px}
.day-tab:hover{border-color:var(--line-2)}
.day-tab.active{background:linear-gradient(140deg,var(--violet-deep),var(--violet));border-color:transparent;color:#fff}
.day-tab .dt-d{font-family:var(--display);font-weight:800;font-size:1.1rem;display:block}
.day-tab .dt-date{font-size:.78rem;font-weight:600;opacity:.8}
.agenda{display:none;flex-direction:column;gap:.7rem}
.agenda.show{display:flex}
.slot{display:grid;grid-template-columns:110px 1fr auto;gap:1.2rem;align-items:center;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--r-sm);padding:1.1rem 1.4rem;transition:.2s}
.slot:hover{border-color:var(--violet);background:var(--panel-2)}
.slot .time{font-family:var(--display);font-weight:700;color:var(--lime);font-size:1rem}
.slot .s-main h4{font-family:var(--sans);font-size:1.05rem;font-weight:700;margin:0 0 .2rem}
.slot .s-main p{margin:0;color:var(--muted);font-size:.86rem}
.track{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:.35rem .75rem;border-radius:999px;white-space:nowrap}
.track.ai{background:rgba(124,92,255,.16);color:var(--violet-2)}
.track.design{background:rgba(198,242,78,.14);color:var(--lime)}
.track.build{background:rgba(255,255,255,.08);color:var(--muted)}
.track.keynote{background:linear-gradient(90deg,var(--violet),var(--lime));color:#12121d}

/* speakers */
.spk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem}
.spk{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.25s}
.spk:hover{transform:translateY(-5px);border-color:var(--violet);box-shadow:var(--shadow)}
.spk-fig{position:relative;aspect-ratio:1/1;overflow:hidden}
.spk-fig img{width:100%;height:100%;object-fit:cover;filter:grayscale(.25);transition:.4s}
.spk:hover .spk-fig img{filter:none;transform:scale(1.04)}
.spk-fig::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(11,11,18,.85))}
.spk-tag{position:absolute;top:.8rem;left:.8rem;z-index:2;font-size:.68rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;background:rgba(11,11,18,.7);border:1px solid var(--line-2);padding:.3rem .65rem;border-radius:999px;color:var(--lime)}
.spk-body{padding:1.1rem 1.3rem 1.4rem;position:relative;margin-top:-2.6rem;z-index:2}
.spk-body h3{font-size:1.3rem}
.spk-body .role{color:var(--violet-2);font-weight:600;font-size:.88rem;margin:.2rem 0 0}
.spk-body .org{color:var(--faint);font-size:.84rem}

/* tickets */
.tix{background:var(--bg-2)}
.tix-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.3rem;align-items:stretch}
.tier{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.8rem;display:flex;flex-direction:column;transition:.25s;position:relative}
.tier.feat{border-color:var(--violet);box-shadow:var(--glow)}
.tier.feat::before{content:'Most popular';position:absolute;top:-11px;left:50%;transform:translateX(-50%);
  background:linear-gradient(90deg,var(--violet),var(--lime));color:#12121d;font-size:.7rem;font-weight:800;
  letter-spacing:.06em;text-transform:uppercase;padding:.3rem .8rem;border-radius:999px}
.tier h3{font-size:1.5rem}
.tier .desc{color:var(--muted);font-size:.88rem;margin:.3rem 0 1rem;min-height:2.6em}
.tier .amt{font-family:var(--display);font-weight:800;font-size:2.6rem;line-height:1}
.tier .amt small{font-size:.9rem;color:var(--faint);font-weight:600;font-family:var(--sans)}
.tier ul{list-style:none;margin:1.2rem 0;padding:0;display:flex;flex-direction:column;gap:.6rem;flex:1}
.tier li{display:flex;gap:.6rem;font-size:.9rem;color:var(--muted)}
.tier li svg{width:18px;height:18px;color:var(--lime);flex:none}
.qty{display:flex;align-items:center;justify-content:space-between;gap:.7rem;background:var(--bg);border:1px solid var(--line);
  border-radius:999px;padding:.4rem .5rem;margin-top:auto}
.qty span{font-weight:600;font-size:.88rem;color:var(--muted);padding-left:.6rem}
.qty .qbtns{display:flex;align-items:center;gap:.5rem}
.qty button{width:32px;height:32px;border-radius:50%;border:1.5px solid var(--line-2);background:var(--panel);
  color:var(--ink);font-size:1.1rem;cursor:pointer;line-height:1}
.qty button:hover{border-color:var(--violet-2);color:var(--violet-2)}
.qty b{min-width:1.4ch;text-align:center;font-size:1.05rem}

/* order bar */
.order{position:sticky;bottom:0;z-index:50;background:rgba(18,18,29,.92);backdrop-filter:blur(14px);
  border-top:1px solid var(--line-2);transform:translateY(120%);transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.order.show{transform:none}
.order-in{display:flex;align-items:center;justify-content:space-between;gap:1.2rem;padding:1rem 0;flex-wrap:wrap}
.order-sum{display:flex;flex-direction:column}
.order-sum small{color:var(--faint);font-size:.8rem;font-weight:600}
.order-sum b{font-family:var(--display);font-size:1.7rem;font-weight:800}
.order-list{color:var(--muted);font-size:.88rem}

/* cta */
.cta{text-align:center;position:relative;overflow:hidden}
.cta::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(124,92,255,.22),transparent 60%);z-index:0}
.cta .wrap{position:relative;z-index:1}
.cta h2{font-size:clamp(2.2rem,4.5vw,3.4rem);max-width:16ch;margin:0 auto}
.cta p{color:var(--muted);max-width:44ch;margin:1rem auto 1.8rem}

/* footer */
.foot{background:var(--bg-2);border-top:1px solid var(--line);padding:3.2rem 0 2rem;color:var(--muted)}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:2rem;padding-bottom:2.2rem;border-bottom:1px solid var(--line)}
.foot .brand{color:var(--ink);margin-bottom:.7rem}
.foot h5{color:var(--ink);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;margin:0 0 1rem}
.foot ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.foot a:hover{color:var(--lime)}
.foot-bot{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding-top:1.4rem;font-size:.85rem;flex-wrap:wrap}
.credit{color:var(--ink);font-weight:600}
.credit a{color:var(--lime)}

/* toast */
.toast{position:fixed;left:50%;bottom:5.5rem;transform:translate(-50%,180%);background:var(--lime);color:#12121d;
  padding:.85rem 1.5rem;border-radius:999px;font-weight:700;font-size:.9rem;z-index:120;box-shadow:var(--shadow);
  transition:transform .35s cubic-bezier(.2,.7,.2,1)}
.toast.show{transform:translate(-50%,0)}

@media(max-width:920px){
  .hero-in{grid-template-columns:1fr;gap:2rem}
  .hero-fig{order:-1;aspect-ratio:3/2}
  .spk-grid,.tix-grid{grid-template-columns:repeat(2,1fr)}
  .foot-top{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav{display:none}
  .burger{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
  section{padding:3.4rem 0}
  .spk-grid,.tix-grid{grid-template-columns:1fr}
  .slot{grid-template-columns:1fr;gap:.5rem}
  .slot .track{justify-self:start}
  .count{flex-wrap:wrap}
  .cd{min-width:calc(50% - .35rem)}
  .day-tab{min-height:44px}
  .qty button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center}
  .foot-top{grid-template-columns:1fr 1fr}
}


/* ==== responsive-100 (audit fixes) ==== */
@media(max-width:920px){#venue .hero-in{grid-template-columns:1fr!important;gap:2rem}}
@media(max-width:480px){.foot-top{grid-template-columns:1fr;gap:1.6rem}}
.foot ul li{overflow-wrap:anywhere}
@media(max-width:920px){.qty button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center}}


/* browser-QA fixes: button clip + checkout bar on mobile */
@media(max-width:600px){.hdr-cta .btn{display:none}}
@media(max-width:400px){.btn{padding:.8rem 1.1rem;font-size:.9rem}}
@media(max-width:520px){.order-in{gap:.7rem}.order-sum b{font-size:1.35rem}.order-in .btn{flex:1;justify-content:center}}


/* toast: hide empty/idle toast by visibility (was leaving a stray empty lime pill on screen at all widths) */
.toast{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .3s ease,visibility .3s ease,transform .35s cubic-bezier(.2,.7,.2,1);}
.toast.show{opacity:1;visibility:visible;}


/* order bar: side gutter on mobile so price/label do not touch the screen edge */
@media(max-width:600px){.order-in{padding-inline:16px}}