/* ============================================================================
   landing.css — ExpertSummit.ai landing page
   Dark, violet, "executive war room". Space Grotesk + Manrope + JetBrains Mono.
   ========================================================================== */
:root {
  --bg: #0a0910;
  --bg2: #0e0c15;
  --panel: #15131d;
  --panel2: #1b1826;
  --line: #2a2636;
  --line2: #38334a;
  --text: #f0eef6;
  --muted: #a39db5;
  --faint: #6f6885;
  --violet: #7c3aed;
  --violet-bright: #9b6bff;
  --violet-soft: #b794ff;
  --green: #34d399;
  --amber: #f0b429;
  --rose: #fb6b7e;
  --blue: #5aa2f5;
  --maxw: 1180px;
  --r: 16px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: 'Manrope', sans-serif; line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(60% 50% at 80% -5%, rgba(124,58,237,.18), transparent 60%),
    radial-gradient(50% 40% at 0% 0%, rgba(124,58,237,.08), transparent 55%);
  background-repeat: no-repeat;
}
::selection { background: rgba(124,58,237,.4); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; font-weight: 600; letter-spacing: -.02em; line-height: 1.08; margin: 0; }
p { margin: 0; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: clamp(64px, 9vw, 120px) 0; }
.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--violet-bright); margin-bottom: 16px;
  display: inline-flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ''; width: 22px; height: 1px; background: var(--violet); }
.section-title { font-size: clamp(28px, 4vw, 44px); margin-bottom: 14px; text-wrap: balance; }
.section-sub { color: var(--muted); font-size: clamp(15px, 1.6vw, 18px); max-width: 620px; text-wrap: pretty; }
.center { text-align: center; }
.center .eyebrow { justify-content: center; }
.center .section-sub { margin-left: auto; margin-right: auto; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; gap: 9px; cursor: pointer;
  font-family: 'Manrope'; font-weight: 700; font-size: 15px; border-radius: 12px;
  padding: 13px 22px; border: 1px solid transparent; transition: all .18s ease; white-space: nowrap;
}
.btn-primary { background: var(--violet); color: #fff; box-shadow: 0 8px 30px -6px rgba(124,58,237,.5); }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line2); }
.btn-ghost:hover { background: var(--panel2); border-color: var(--violet); }
.btn-lg { padding: 16px 28px; font-size: 16px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px);
  background: color-mix(in oklch, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; gap: 28px; height: 66px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: 'Space Grotesk'; font-weight: 700; font-size: 19px; }
.nav-links { display: flex; gap: 26px; margin-left: 12px; }
.nav-links a { font-size: 14.5px; color: var(--muted); font-weight: 500; }
.nav-links a:hover { color: var(--text); }
.nav-cta { margin-left: auto; display: flex; gap: 12px; align-items: center; }

/* hero */
.hero { padding: clamp(48px,7vw,96px) 0 clamp(40px,6vw,72px); }
.hero-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(38px, 5.4vw, 68px); text-wrap: balance; }
.hero h1 .accent { color: var(--violet-bright); }
.hero-sub { color: var(--muted); font-size: clamp(16px,1.7vw,20px); margin: 22px 0 30px; max-width: 540px; text-wrap: pretty; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-trust { margin-top: 26px; display: flex; align-items: center; gap: 12px; color: var(--faint); font-size: 13px; }
.hero-trust .dots { display: flex; }
.hero-trust .dots > div { margin-left: -8px; border: 2px solid var(--bg); border-radius: 50%; }

/* room mock (hero visual) */
.room {
  background: linear-gradient(160deg, var(--panel) , var(--bg2)); border: 1px solid var(--line2);
  border-radius: 20px; overflow: hidden; box-shadow: 0 40px 90px -30px rgba(0,0,0,.7), 0 0 0 1px rgba(124,58,237,.12);
}
.room-top { display: flex; align-items: center; gap: 10px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.room-title { font-size: 13px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.room-live { margin-left: auto; display: inline-flex; align-items: center; gap: 6px; font-size: 11px; color: var(--green);
  font-family: 'JetBrains Mono'; }
.room-live .pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green);
  animation: pulse 1.4s ease-in-out infinite; }
.room-stage { display: flex; gap: 6px; padding: 16px; background: radial-gradient(120% 140% at 50% -30%, rgba(124,58,237,.14), transparent 60%); }
.stage-p { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 5px; opacity: .5; transition: opacity .3s; }
.stage-p.on { opacity: 1; }
.stage-p .nm { font-size: 10.5px; font-weight: 600; }
.stage-p .rl { font-size: 8.5px; color: var(--faint); }
.av { border-radius: 50%; background: #f3f1ee; background-size: cover; background-position: top center; flex: none; }
.av.ring-green { box-shadow: 0 0 0 2.5px var(--green), 0 0 18px rgba(52,211,153,.5); }
.av.ring-rose { box-shadow: 0 0 0 2.5px var(--rose); }
.av.ring-blue { box-shadow: 0 0 0 2.5px var(--blue); }
.av.ring-violet { box-shadow: 0 0 0 2.5px var(--violet-bright); }
.av.ring-amber { box-shadow: 0 0 0 2.5px var(--amber); }
.av.mono { display: grid; place-items: center; font-family: 'Space Grotesk'; font-weight: 600; color: #0c0b10; }
.room-msgs { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.msg { display: flex; gap: 10px; }
.msg .body { background: var(--panel2); border-left: 2px solid var(--line2); border-radius: 0 10px 10px 0; padding: 9px 13px;
  font-size: 12.5px; line-height: 1.5; color: var(--text); }
.msg .who { font-size: 11.5px; font-weight: 700; margin-bottom: 3px; }
.msg.mod .body { border-color: var(--amber); background: rgba(240,180,41,.07); }
.msg.green .body { border-color: var(--green); }
.msg.rose .body { border-color: var(--rose); }
.typing { display: inline-flex; gap: 4px; align-items: center; padding: 8px 12px; border-radius: 999px;
  background: var(--panel2); border: 1px solid var(--line); }
.typing i { width: 5px; height: 5px; border-radius: 50%; background: var(--blue); animation: dot 1.1s ease-in-out infinite; }
.typing i:nth-child(2){ animation-delay: .15s; } .typing i:nth-child(3){ animation-delay: .3s; }

/* generic cards */
.grid { display: grid; gap: 18px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 26px;
  transition: transform .18s, border-color .18s, box-shadow .18s;
}
.card:hover { transform: translateY(-3px); border-color: var(--line2); box-shadow: 0 18px 50px -20px rgba(0,0,0,.6); }
.card-ic { width: 50px; height: 50px; border-radius: 13px; display: grid; place-items: center;
  background: var(--panel2); color: var(--violet-bright); margin-bottom: 16px; }
.card h3 { font-size: 20px; margin-bottom: 9px; }
.card p { color: var(--muted); font-size: 14px; line-height: 1.55; }
.card .ideal { margin-top: 12px; font-size: 12.5px; color: var(--faint); }
.card .ideal b { color: var(--violet-soft); font-weight: 600; }

/* audience */
.aud { display: flex; flex-direction: column; gap: 14px; }
.aud .num { font-family: 'JetBrains Mono'; font-size: 13px; color: var(--violet-bright); }

/* steps */
.steps { display: flex; flex-direction: column; gap: 0; }
.step { display: grid; grid-template-columns: 64px 1fr; gap: 22px; padding: 22px 0; border-top: 1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .n { font-family: 'Space Grotesk'; font-size: 30px; font-weight: 600; color: var(--violet-bright); }
.step h3 { font-size: 21px; margin-bottom: 6px; }
.step p { color: var(--muted); font-size: 14.5px; }

/* experts */
.exp-card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden;
  transition: transform .18s, border-color .18s; }
.exp-card:hover { transform: translateY(-4px); }
.exp-portrait { height: 230px; background: #f3f1ee; background-size: cover; background-position: top center; position: relative; }
.exp-portrait::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, var(--panel)); }
.exp-card.c-blue .bar { background: var(--blue); } .exp-card.c-rose .bar { background: var(--rose); }
.exp-card.c-green .bar { background: var(--green); } .exp-card.c-amber .bar { background: var(--amber); }
.exp-card .bar { height: 3px; }
.exp-body { padding: 18px 20px 22px; }
.exp-body .nm { font-family: 'Space Grotesk'; font-weight: 600; font-size: 20px; }
.exp-body .rl { font-size: 13px; font-weight: 600; margin-bottom: 12px; }
.exp-card.c-blue .rl { color: var(--blue); } .exp-card.c-rose .rl { color: var(--rose); }
.exp-card.c-green .rl { color: var(--green); } .exp-card.c-amber .rl { color: var(--amber); }
.exp-body .bio { font-size: 13px; color: var(--muted); line-height: 1.5; margin-bottom: 14px; }
.exp-body .quote { font-family: 'Space Grotesk'; font-size: 15px; font-style: italic; color: var(--text);
  border-left: 2px solid var(--line2); padding-left: 12px; line-height: 1.45; }

/* use cases */
.case { display: grid; grid-template-columns: auto 1fr; gap: 22px; align-items: start;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 24px; }
.case .stack { display: flex; }
.case .stack .av { margin-left: -10px; border: 2px solid var(--panel); }
.case .stack .av:first-child { margin-left: 0; }
.case .verdict { margin-top: 12px; padding: 12px 15px; border-radius: 11px; background: var(--bg2);
  border: 1px solid var(--line); font-size: 13.5px; color: var(--muted); }
.case .verdict b { color: var(--green); font-weight: 700; }
.case .tag { display: inline-flex; align-items:center; gap:6px; font-size: 11.5px; font-weight: 600; color: var(--violet-soft);
  background: rgba(124,58,237,.12); border: 1px solid rgba(124,58,237,.3); border-radius: 7px; padding: 3px 9px; }

/* document mockup */
.doc-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.doc-paper { background: #f6f5f2; color: #1a1822; border-radius: 12px; padding: 34px; aspect-ratio: 8.5/11;
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.7); transform: rotate(-1.5deg); transition: transform .3s; max-width: 420px; }
.doc-paper:hover { transform: rotate(0); }
.doc-paper .dh { display: flex; align-items: center; gap: 8px; font-family: 'Space Grotesk'; font-weight: 700; font-size: 15px;
  color: var(--violet); border-bottom: 2px solid #1a1822; padding-bottom: 10px; margin-bottom: 14px; }
.doc-paper h4 { font-family: 'Space Grotesk'; font-size: 18px; margin: 0 0 4px; color: #1a1822; }
.doc-paper .dmeta { font-size: 10px; font-family: 'JetBrains Mono'; color: #7a7686; margin-bottom: 16px; }
.doc-paper .dline { height: 7px; border-radius: 4px; background: #dedbe6; margin-bottom: 9px; }
.doc-paper .dline.s { width: 60%; } .doc-paper .dline.m { width: 85%; }
.doc-paper .dchip { display: inline-block; font-size: 9px; font-weight: 700; color: #1b7a4e; background: #d6f3e3;
  border-radius: 5px; padding: 2px 7px; margin-bottom: 12px; font-family: 'JetBrains Mono'; }
.doc-feats { display: flex; flex-direction: column; gap: 16px; }
.doc-feat { display: flex; gap: 14px; align-items: flex-start; }
.doc-feat .fi { width: 40px; height: 40px; border-radius: 11px; background: var(--panel2); color: var(--violet-bright);
  display: grid; place-items: center; flex: none; }
.doc-feat h4 { font-family: 'Space Grotesk'; font-size: 16px; margin: 0 0 3px; }
.doc-feat p { color: var(--muted); font-size: 13.5px; }

/* testimonials */
.tgrid { columns: 3; column-gap: 18px; }
.tcard { break-inside: avoid; margin-bottom: 18px; background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--r); padding: 22px; }
.tcard .stars { color: var(--amber); font-size: 13px; letter-spacing: 2px; margin-bottom: 12px; }
.tcard .quote { font-size: 14.5px; line-height: 1.55; color: var(--text); margin-bottom: 14px; }
.tcard .who { font-size: 12.5px; color: var(--faint); }
.tcard .who b { color: var(--muted); font-weight: 700; }

/* pricing */
.pgrid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; align-items: stretch; }
.price { background: var(--panel); border: 1px solid var(--line); border-radius: var(--r); padding: 26px 22px;
  display: flex; flex-direction: column; gap: 16px; }
.price.feat { border-color: var(--violet); background: linear-gradient(180deg, rgba(124,58,237,.12), var(--panel) 40%);
  box-shadow: 0 20px 60px -24px rgba(124,58,237,.5); }
.price .pname { font-family: 'Space Grotesk'; font-weight: 600; font-size: 18px; }
.price .pamt { font-size: 34px; font-family: 'Space Grotesk'; font-weight: 700; }
.price .pamt small { font-size: 14px; color: var(--faint); font-weight: 500; }
.price .pcred { font-family: 'JetBrains Mono'; font-size: 12.5px; color: var(--violet-bright); }
.price .bonus { display: inline-block; font-size: 10.5px; font-weight: 700; color: var(--green); background: rgba(52,211,153,.12);
  border-radius: 6px; padding: 2px 8px; margin-left: 6px; }
.price ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; flex: 1; }
.price li { font-size: 13px; color: var(--muted); display: flex; gap: 9px; align-items: flex-start; }
.price li::before { content: '✓'; color: var(--violet-bright); font-weight: 700; }
.price .btn { justify-content: center; width: 100%; }
.ptag { position: absolute; top: -11px; left: 50%; transform: translateX(-50%); font-size: 10.5px; font-weight: 700;
  font-family: 'JetBrains Mono'; letter-spacing: .1em; text-transform: uppercase; color: #fff; background: var(--violet);
  border-radius: 999px; padding: 4px 12px; }
.note { margin-top: 20px; font-size: 13px; color: var(--faint); text-align: center; max-width: 640px; margin-left: auto; margin-right: auto; }

/* FAQ */
.faq { max-width: 780px; margin: 0 auto; }
.qa { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; cursor: pointer; padding: 20px 0; display: flex; align-items: center; gap: 16px;
  font-family: 'Space Grotesk'; font-weight: 600; font-size: 17px; }
.qa summary::-webkit-details-marker { display: none; }
.qa summary .pm { margin-left: auto; color: var(--violet-bright); font-size: 22px; transition: transform .2s; flex: none; }
.qa[open] summary .pm { transform: rotate(45deg); }
.qa .ans { padding: 0 0 20px 0; color: var(--muted); font-size: 14.5px; line-height: 1.6; max-width: 660px; }

/* final cta */
.final { text-align: center; border-radius: 24px; padding: clamp(48px,7vw,80px) 24px;
  background: linear-gradient(160deg, rgba(124,58,237,.18), var(--panel) 70%); border: 1px solid var(--line2);
  position: relative; overflow: hidden; }
.final::before { content:''; position:absolute; inset:0; background: radial-gradient(50% 80% at 50% 0%, rgba(124,58,237,.25), transparent 60%); pointer-events: none; }
.final h2 { font-size: clamp(30px,4.5vw,48px); position: relative; }
.final p { color: var(--muted); margin: 16px auto 28px; max-width: 480px; position: relative; }
.waitlist { display: flex; gap: 10px; max-width: 460px; margin: 0 auto; position: relative; flex-wrap: wrap; justify-content: center; }
.waitlist input { flex: 1; min-width: 220px; background: var(--bg); border: 1px solid var(--line2); border-radius: 12px;
  padding: 14px 16px; color: var(--text); font-size: 15px; font-family: 'Manrope'; outline: none; }
.waitlist input:focus { border-color: var(--violet); }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 40px 0; margin-top: 40px; }
.footer-inner { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; color: var(--faint); font-size: 13px; }
.footer-inner .brand { font-size: 16px; color: var(--text); }
.footer a { color: var(--muted); }
.footer .right { margin-left: auto; display: flex; gap: 20px; }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .3; } }
@keyframes dot { 0%,100% { opacity: .3; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-2px); } }

/* responsive */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .doc-wrap { grid-template-columns: 1fr; gap: 32px; }
  .doc-paper { margin: 0 auto; }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .pgrid { grid-template-columns: repeat(2, 1fr); }
  .tgrid { columns: 2; }
  .nav-links { display: none; }
}
@media (max-width: 600px) {
  .g3, .g2, .pgrid { grid-template-columns: 1fr; }
  .tgrid { columns: 1; }
  .case { grid-template-columns: 1fr; }
  .step { grid-template-columns: 44px 1fr; gap: 14px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { justify-content: center; }
}