/* ============ tokens ============ */
:root{
  --ink: #12141c;
  --ink-2: #1b1e2b;
  --ink-3: #23273a;
  --line: rgba(232,228,218,0.14);
  --line-strong: rgba(232,228,218,0.26);
  --paper: #e8e4da;
  --paper-dim: #9b97a6;
  --brass: #c6a15b;
  --brass-dim: #8c7440;
  --rust: #b4573f;
  --font-serif: 'Newsreader', Georgia, serif;
  --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
  --maxw: 880px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{
  font-family:var(--font-serif);
  font-weight:500;
  margin:0 0 0.5em;
  color:var(--paper);
}
p{margin:0 0 1em;color:var(--paper);}
a{color:var(--brass);}
em{font-style:italic;color:var(--paper);}

.grain{
  position:fixed;inset:0;pointer-events:none;z-index:1;opacity:0.035;
  background-image:radial-gradient(rgba(255,255,255,0.5) 0.5px, transparent 0.5px);
  background-size:3px 3px;
}
#bg-network{position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:0.5;}

/* ============ exemplo ilustrativo ============ */
.example{max-width:var(--maxw);margin:0 auto;padding:0 24px 80px;}
.example-kicker{font-size:13px;color:var(--brass);letter-spacing:0.03em;margin-bottom:8px;}
.example h2{font-size:28px;}
.example-sub{color:var(--paper-dim);max-width:56ch;font-size:15px;}
.example-board{
  display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:32px;
  border:1px solid var(--line-strong);border-radius:4px;padding:32px;
  background:var(--ink-2);
}
.example-chat{display:flex;flex-direction:column;gap:10px;}
.chat-bubble{
  padding:10px 14px;border-radius:2px;font-size:14px;max-width:88%;
  border:1px solid var(--line-strong);
}
.chat-bubble--a{align-self:flex-start;background:var(--ink-3);}
.chat-bubble--b{align-self:flex-end;background:rgba(198,161,91,0.1);border-color:var(--brass-dim);}
.example-annotations{display:flex;flex-direction:column;gap:20px;justify-content:center;}
.annotation-tag{
  display:inline-block;font-size:13px;color:var(--brass);border:1px solid var(--brass-dim);
  border-radius:2px;padding:3px 9px;margin-bottom:6px;
}
.annotation p{font-size:14px;color:var(--paper-dim);margin:0;}
@media (max-width:760px){
  .example-board{grid-template-columns:1fr;}
}

/* ============ topbar ============ */
.topbar{
  position:sticky;top:0;z-index:40;width:100%;
  background:rgba(15,17,24,0);border-bottom:1px solid rgba(232,228,218,0);
  backdrop-filter:blur(0px);
  transition:background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}
.topbar.is-scrolled{
  background:rgba(15,17,24,0.72);border-bottom-color:var(--line);
  backdrop-filter:blur(10px);
}
.topbar-inner{
  display:flex;align-items:center;justify-content:space-between;
  max-width:var(--maxw);margin:0 auto;padding:24px 24px;
  transition:padding 0.3s ease;
}
.topbar.is-scrolled .topbar-inner{padding:14px 24px;}
.brand{
  font-family:var(--font-serif);font-size:22px;color:var(--paper);text-decoration:none;letter-spacing:0.01em;
}
.topbar-nav a{
  color:var(--paper-dim);text-decoration:none;font-size:14px;margin-left:28px;
}
.topbar-nav a:hover{color:var(--brass);}

/* ============ hero ============ */
.hero{
  max-width:var(--maxw);margin:0 auto;padding:64px 24px 40px;
  display:grid;grid-template-columns:1.1fr 0.9fr;gap:40px;align-items:center;
}
.kicker{
  font-size:13px;letter-spacing:0.04em;color:var(--brass);margin-bottom:14px;
  display:flex;align-items:center;gap:8px;
}
.kicker-dot{
  width:6px;height:6px;border-radius:50%;background:var(--brass);flex:none;
  box-shadow:0 0 0 0 rgba(198,161,91,0.55);
  animation:kicker-pulse 2.4s ease-out infinite;
}
@keyframes kicker-pulse{
  0%{box-shadow:0 0 0 0 rgba(198,161,91,0.5);}
  70%{box-shadow:0 0 0 7px rgba(198,161,91,0);}
  100%{box-shadow:0 0 0 0 rgba(198,161,91,0);}
}
.hero h1{
  font-size:44px;line-height:1.12;max-width:11ch;
}
.lede{
  font-size:17px;color:var(--paper-dim);max-width:46ch;margin-top:18px;
}
.hero-actions{display:flex;gap:14px;margin-top:8px;flex-wrap:wrap;}

.hero-stats{display:flex;align-items:center;gap:18px;margin-top:32px;flex-wrap:wrap;}
.hero-stat{display:flex;flex-direction:column;}
.hero-stat-num{font-family:var(--font-serif);font-size:26px;color:var(--paper);line-height:1;}
.hero-stat-num--text{font-size:22px;}
.hero-stat-label{font-size:12px;color:var(--paper-dim);margin-top:4px;}
.hero-stat-sep{width:1px;height:30px;background:var(--line-strong);}

.hero-board{aspect-ratio:420/460;position:relative;transition:transform 0.2s ease-out;transform-style:preserve-3d;}
.hero-board .scan-line{
  position:absolute;left:6%;right:6%;height:1px;top:0;
  background:linear-gradient(90deg, transparent, var(--brass), transparent);
  opacity:0;filter:blur(0.3px);
  animation:scan-sweep 5s ease-in-out infinite;
  animation-delay:1.4s;
}
@keyframes scan-sweep{
  0%{top:4%;opacity:0;}
  8%{opacity:0.85;}
  50%{top:92%;opacity:0.85;}
  62%{opacity:0;}
  100%{top:92%;opacity:0;}
}
@media (prefers-reduced-motion:reduce){
  .hero-board .scan-line{animation:none;opacity:0;}
}
.board-card rect{fill:none;stroke:var(--line-strong);stroke-width:1;}
.board-card line{stroke:var(--paper-dim);stroke-width:1;opacity:0.55;}
.board-card--mark rect{stroke:var(--brass);}
.board-card--mark circle{fill:none;stroke:var(--brass);stroke-width:1.4;}
.board-thread{stroke:var(--brass-dim);stroke-width:1;fill:none;opacity:0.65;}
.board-card,.board-thread{
  opacity:0;transform:translateY(6px);
  animation:board-in 0.7s ease-out forwards;
  animation-delay:calc(var(--d) * 110ms + 200ms);
}
@keyframes board-in{to{opacity:1;transform:translateY(0);}}
@media (prefers-reduced-motion:reduce){
  .board-card,.board-thread{animation:none;opacity:1;transform:none;}
}

/* ============ buttons ============ */
.btn{
  font-family:var(--font-sans);font-size:15px;font-weight:500;
  padding:13px 22px;border-radius:2px;border:1px solid transparent;
  cursor:pointer;text-decoration:none;display:inline-block;line-height:1;
  transition:background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.btn-primary{
  background:var(--brass);color:#1b1508;border-color:var(--brass);
  position:relative;overflow:hidden;
}
.btn-primary::after{
  content:"";position:absolute;top:0;left:-60%;width:35%;height:100%;
  background:linear-gradient(115deg, transparent, rgba(255,255,255,0.45), transparent);
  transform:skewX(-18deg);transition:left 0.55s ease;
}
.btn-primary:hover::after{left:130%;}
.btn-primary:hover{background:#d4b06c;}
.btn-primary:disabled{opacity:0.4;cursor:not-allowed;}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--line-strong);}
.btn-ghost:hover{border-color:var(--brass);color:var(--brass);}

/* ============ scroll reveal ============ */
.reveal{
  animation:reveal-in 0.5s ease both;
}
@keyframes reveal-in{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:translateY(0);}
}
@media (prefers-reduced-motion:reduce){
  .reveal{animation:none;opacity:1;transform:none;}
}
.principle{
  max-width:640px;margin:20px auto 0;padding:56px 24px;
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  text-align:center;
}
.principle p{
  font-family:var(--font-serif);font-size:24px;line-height:1.5;color:var(--paper);margin:0;
}

/* ============ how it works ============ */
.how{max-width:var(--maxw);margin:0 auto;padding:72px 24px;}
.how h2{font-size:28px;margin-bottom:36px;}
.how-list{list-style:none;margin:0;padding:0;display:grid;gap:32px;}
.how-list li{
  display:flex;gap:20px;padding:20px;border:1px solid var(--line-strong);border-radius:4px;
  background:var(--ink-2);transition:transform 0.2s ease, border-color 0.2s ease;
}
.how-list li:hover{transform:translateY(-3px);border-color:var(--brass-dim);}
.how-index{
  font-family:var(--font-serif);font-size:20px;color:var(--brass);
  width:44px;height:44px;flex:none;position:relative;
  display:flex;align-items:center;justify-content:center;
}
.how-ring{position:absolute;inset:0;width:100%;height:100%;transform:rotate(-90deg);}
.how-ring circle{
  fill:none;stroke:var(--brass);stroke-width:1;
  stroke-dasharray:126;
  animation:ring-draw 0.9s ease both;
  animation-delay:0.3s;
}
@keyframes ring-draw{
  from{stroke-dashoffset:126;stroke:var(--line-strong);}
  to{stroke-dashoffset:0;stroke:var(--brass);}
}
@media (prefers-reduced-motion:reduce){
  .how-ring circle{animation:none;stroke-dashoffset:0;}
}
.how-index span{position:relative;z-index:1;}
.how-list h3{font-size:18px;margin-bottom:6px;}
.how-list p{color:var(--paper-dim);margin:0;font-size:15px;}

/* ============ patterns ============ */
.patterns{max-width:var(--maxw);margin:0 auto;padding:0 24px 72px;}
.patterns h2{font-size:28px;}
.patterns-intro{color:var(--paper-dim);max-width:56ch;font-size:15px;}
.patterns-list{
  list-style:none;margin:24px 0;padding:0;
  display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
}
.patterns-list li{
  display:flex;align-items:center;gap:12px;
  padding:16px 16px;border:1px solid var(--line-strong);border-radius:4px;
  background:var(--ink-2);font-size:14.5px;color:var(--paper);
  transition:transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}
.patterns-list li:hover{
  transform:translateY(-3px);border-color:var(--brass-dim);background:var(--ink-3);
}
.pattern-icon{font-size:18px;flex:none;}
.patterns-note{
  font-size:13.5px;color:var(--paper-dim);border-left:2px solid var(--brass-dim);
  padding-left:16px;max-width:60ch;
}

/* ============ privacy ============ */
.privacy{max-width:var(--maxw);margin:0 auto;padding:0 24px 80px;}
.privacy h2{font-size:28px;margin-bottom:28px;}
.privacy-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;}
.privacy-grid > div{
  padding:20px 22px;border:1px solid var(--line-strong);border-radius:4px;
  background:var(--ink-2);transition:transform 0.2s ease, border-color 0.2s ease;
}
.privacy-grid > div:hover{transform:translateY(-3px);border-color:var(--brass-dim);}
.privacy-grid h3{font-size:16px;margin-bottom:6px;display:flex;align-items:center;gap:10px;}
.privacy-icon{font-size:18px;flex:none;}
.privacy-grid p{font-size:14.5px;color:var(--paper-dim);margin:0;}

/* ============ footer ============ */
.site-footer{
  max-width:var(--maxw);margin:0 auto;padding:28px 24px 56px;
  border-top:1px solid var(--line);
}
.site-footer p{font-size:13px;color:var(--paper-dim);margin:0;}

/* ============ app overlay ============ */
.app-overlay{
  position:fixed;inset:0;z-index:50;background:rgba(10,11,16,0.86);
  display:flex;align-items:center;justify-content:center;padding:24px;
}
.app-overlay[hidden]{display:none;}
.app-shell{
  position:relative;width:100%;max-width:620px;max-height:88vh;overflow-y:auto;
  background:var(--ink-2);border:1px solid var(--line-strong);border-radius:4px;
  padding:44px 40px 36px;
}
.app-close{
  position:absolute;top:14px;right:16px;background:none;border:none;color:var(--paper-dim);
  font-size:26px;cursor:pointer;line-height:1;
}
.app-close:hover{color:var(--brass);}

/* progress row */
.app-progress-row{display:flex;align-items:center;gap:14px;margin-bottom:32px;}
.app-back{background:none;border:none;color:var(--paper-dim);font-size:18px;cursor:pointer;flex:none;padding:4px;}
.app-back:hover{color:var(--brass);}
.app-progress-track{flex:1;height:2px;background:var(--line-strong);border-radius:2px;overflow:hidden;}
.app-progress-fill{height:100%;background:var(--brass);width:16.6%;transition:width 0.25s ease;}
.app-progress-label{font-size:12.5px;color:var(--paper-dim);flex:none;}

/* source tabs */
.source-tabs{display:flex;gap:8px;margin:18px 0 4px;}
.source-tab{
  border:1px solid var(--line-strong);background:transparent;color:var(--paper-dim);
  padding:8px 16px;border-radius:2px;font-size:13.5px;cursor:pointer;
}
.source-tab.selected{border-color:var(--brass);color:var(--brass);}
.source-panel{margin-top:14px;}

.dropzone{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  border:1px dashed var(--line-strong);border-radius:2px;padding:36px 20px;cursor:pointer;text-align:center;
}
.dropzone:hover{border-color:var(--brass-dim);}
.dropzone-icon{font-size:22px;color:var(--brass-dim);}
#dropzone-text{color:var(--paper-dim);font-size:14px;}

.signal-card{
  margin-top:16px;border:1px solid var(--line-strong);border-radius:2px;padding:18px;text-align:center;
  transition:border-color 0.2s ease;
}
.signal-card.signal-loading{border-color:var(--line-strong);}
.signal-card.signal-loading .signal-count::after{
  content:"";display:inline-block;width:16px;height:16px;margin-top:4px;
  border:2px solid var(--line-strong);border-top-color:var(--brass);border-radius:50%;
  animation:spin 0.8s linear infinite;
}
.signal-card.signal-success{border-color:var(--brass-dim);}
.signal-card.signal-success .signal-strength{color:var(--brass);}
.signal-card.signal-error{border-color:var(--rust);}
.signal-count{font-family:var(--font-serif);font-size:30px;display:block;}
.signal-label{color:var(--paper-dim);font-size:13px;}
.signal-strength{display:block;margin-top:6px;font-size:12.5px;color:var(--brass);}

.privacy-inline{font-size:12.5px;color:var(--paper-dim);margin-top:16px;}
.privacy-inline a{color:var(--brass);}

/* speaker bars */
.speaker-bars{margin:22px 0 4px;display:flex;flex-direction:column;gap:18px;}
.speaker-bar-row .row-top{display:flex;justify-content:space-between;font-size:14px;margin-bottom:6px;}
.speaker-bar-row .row-top .pct{color:var(--paper-dim);}
.speaker-bar-track{height:8px;background:var(--ink-3);border-radius:2px;overflow:hidden;}
.speaker-bar-fill{height:100%;background:var(--brass);}

/* name fields */
.name-fields{display:flex;flex-direction:column;gap:16px;margin:20px 0 4px;}
.name-field-row{display:flex;align-items:center;gap:14px;}
.avatar-circle{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--line-strong);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-size:16px;flex:none;
}
.name-field-row input{flex:1;}

/* self select */
.self-select{display:flex;gap:14px;margin:20px 0 4px;flex-wrap:wrap;}
.self-option{
  border:1px solid var(--line-strong);border-radius:2px;padding:14px 20px;display:flex;align-items:center;gap:12px;
  cursor:pointer;
}
.self-option.selected{border-color:var(--brass);}
.self-option.selected .avatar-circle{border-color:var(--brass);color:var(--brass);}

/* text inputs */
.field-label{display:block;font-size:13px;color:var(--paper-dim);margin:18px 0 6px;}
.text-input{
  width:100%;background:var(--ink-3);color:var(--paper);border:1px solid var(--line-strong);
  border-radius:2px;padding:12px 14px;font-size:15px;font-family:var(--font-sans);
}
.text-input:focus{outline:none;border-color:var(--brass-dim);}

/* email code inputs */
.code-inputs{display:flex;gap:10px;margin:18px 0 4px;}
.code-inputs input{
  width:44px;height:52px;text-align:center;font-size:20px;background:var(--ink-3);color:var(--paper);
  border:1px solid var(--line-strong);border-radius:2px;font-family:var(--font-sans);
}
.code-inputs input:focus{outline:none;border-color:var(--brass-dim);}
.resend-line{font-size:13px;margin-top:12px;}
.resend-line a{color:var(--brass);cursor:pointer;}

.btn-block{width:100%;text-align:center;}
.screen-actions.single{justify-content:center;}
.report-email-note{font-size:13.5px;color:var(--brass);margin-top:18px;}

.screen-kicker{font-size:13px;color:var(--brass);letter-spacing:0.03em;margin-bottom:6px;}
.screen-sub{color:var(--paper-dim);font-size:14.5px;margin-top:-6px;}
.screen h2{font-size:24px;}

/* topic chips */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0 16px;}
.chip{
  border:1px solid var(--line-strong);padding:9px 14px;border-radius:2px;
  font-size:14px;cursor:pointer;user-select:none;color:var(--paper);
  display:flex;align-items:center;gap:8px;transition:border-color 0.15s ease, color 0.15s ease;
}
.chip:hover{border-color:var(--brass-dim);}
.chip.selected{border-color:var(--brass);color:var(--brass);background:rgba(198,161,91,0.08);}
.chip .mark{
  width:14px;height:14px;border-radius:50%;border:1px solid currentColor;
  display:flex;align-items:center;justify-content:center;font-size:10px;flex:none;
}
.chip.selected .mark::after{content:"✓";}

.discover-all{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--paper-dim);cursor:pointer;margin-bottom:8px;}
.discover-all input{accent-color:var(--brass);}

.screen-actions{display:flex;justify-content:space-between;gap:12px;margin-top:28px;}
.screen-actions[hidden]{display:none;}
.screen-actions .btn-primary{margin-left:auto;}

/* paste screen */
#conversation-input{
  width:100%;min-height:200px;background:var(--ink-3);color:var(--paper);
  border:1px solid var(--line-strong);border-radius:2px;padding:14px;
  font-family:var(--font-sans);font-size:14.5px;resize:vertical;margin-top:16px;
}
#conversation-input:focus{outline:none;border-color:var(--brass-dim);}
.upload-row{display:flex;align-items:center;gap:12px;margin-top:14px;}
.file-btn{
  border:1px solid var(--line-strong);padding:8px 14px;border-radius:2px;font-size:13.5px;
  cursor:pointer;color:var(--paper-dim);
}
.file-btn:hover{border-color:var(--brass-dim);color:var(--paper);}
.upload-name{font-size:13px;color:var(--paper-dim);}
.input-error{color:var(--rust);font-size:13.5px;margin-top:10px;margin-bottom:0;}

/* processing */
.processing{padding:60px 0;text-align:center;}
.processing-mark{
  width:44px;height:44px;margin:0 auto 24px;border-radius:50%;
  border:1px solid var(--line-strong);border-top-color:var(--brass);
  animation:spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg);}}
.processing-line{color:var(--paper-dim);font-size:14.5px;}

/* discovery hook */
.analysis-source{
  display:inline-block;margin:2px 0 16px;padding:6px 9px;border:1px solid var(--line);
  border-radius:4px;color:var(--paper-dim);font-size:12.5px;background:rgba(255,255,255,0.03);
}
.analysis-source.is-demo{color:var(--brass);}
.analysis-source.is-ai{color:var(--sage);}
.discovery-body{font-size:15.5px;color:var(--paper);max-width:58ch;margin-bottom:8px;}

/* relatório: primeira secção livre + resto bloqueado com o texto real por baixo do blur */
.report-locked-wrap{
  position:relative;margin-top:4px;
  max-height:420px;overflow:hidden;border-radius:4px;
}
.report-locked-wrap .report-blurred{
  filter:blur(5px);user-select:none;pointer-events:none;
}
.report-fade{
  position:absolute;left:0;right:0;bottom:0;height:220px;
  background:linear-gradient(to bottom, transparent, var(--ink-2) 75%);
}
.unlock-btn{
  position:absolute;left:50%;bottom:28px;transform:translateX(-50%);
  white-space:nowrap;box-shadow:0 8px 24px rgba(0,0,0,0.45);
}
.report-locked-wrap.unlocked{max-height:none;overflow:visible;}
.report-locked-wrap.unlocked .report-blurred{filter:none;pointer-events:auto;}
.report-locked-wrap.unlocked .report-fade,
.report-locked-wrap.unlocked .unlock-btn{display:none;}

/* report */
.report-content h3{font-size:18px;color:var(--brass);margin-top:30px;}
.report-content h3:first-child{margin-top:0;}
.report-block{
  border-left:2px solid var(--line-strong);padding-left:18px;margin-bottom:22px;
}
.report-content p{font-size:15.5px;line-height:1.7;color:var(--paper);margin:0;}

/* ============ responsive ============ */
@media (max-width:760px){
  .hero{grid-template-columns:1fr;padding-top:44px;}
  .hero-board{max-width:300px;margin:0 auto;}
  .hero h1{font-size:34px;max-width:none;}
  .patterns-list{grid-template-columns:1fr 1fr;}
  .privacy-grid{grid-template-columns:1fr;}
  .app-shell{padding:36px 22px 28px;}
}
@media (max-width:480px){
  .patterns-list{grid-template-columns:1fr;}
  .topbar-nav a{margin-left:16px;}
}