/* ==========================================================================
   ALPHA LAB — design system (v5, fase 1)
   Dark neutro + 1 acento cromático. Inter (UI/corpo) + JetBrains Mono (labels/dados).
   ========================================================================== */

:root{
  --bg:        #0B1220;
  --bg-raised: #101a2c;
  --bg-panel:  #0d1526;
  --border:    rgba(255,255,255,0.09);
  --border-soft: rgba(255,255,255,0.05);

  --text:      #FFFFFF;
  --text-dim:  #9AA4B2;
  --text-faint:#737d8e;

  --accent:      #007BFF;
  --accent-cyan: #00E0FF;
  --accent-soft: rgba(0,123,255,0.12);
  --accent-line: rgba(0,123,255,0.35);

  --ok:   #7fbf8f;

  --radius: 3px;
  --maxw: 1220px;
  --maxw-wide: 1440px;

  --font-ui:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}

body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-ui);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

::selection{background:var(--accent);color:var(--bg);}

a{color:inherit;text-decoration:none;}

img,svg{display:block;max-width:100%;}

.container{
  width:100%;
  max-width:var(--maxw);
  margin:0 auto;
  padding:0 max(24px, env(safe-area-inset-right)) 0 max(24px, env(safe-area-inset-left));
}

.container-wide{
  width:100%;
  max-width:var(--maxw-wide);
  margin:0 auto;
  padding:0 max(24px, env(safe-area-inset-right)) 0 max(24px, env(safe-area-inset-left));
}

@media (min-width:1024px){
  .container,
  .container-wide{padding:0 40px;}
}

section{
  padding:88px 0;
  border-top:1px solid var(--border-soft);
}

.section-head{
  display:flex;
  align-items:center;
  gap:16px;
  margin-bottom:40px;
}

.section-num{
  font-family:var(--font-mono);
  font-size:0.82rem;
  letter-spacing:0.04em;
  color:var(--accent-cyan);
  flex:0 0 auto;
}

.section-name{
  font-family:var(--font-mono);
  font-size:0.74rem;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--text-dim);
  flex:0 0 auto;
}

.section-rule{
  flex:1 1 auto;
  height:1px;
  background:var(--border);
  min-width:32px;
}

.section-title{
  font-size:clamp(1.5rem,3vw,2.15rem);
  font-weight:600;
  letter-spacing:-0.01em;
  line-height:1.25;
  max-width:760px;
  margin-bottom:36px;
}

.section-intro{
  color:var(--text-dim);
  max-width:640px;
  margin:-20px 0 36px;
  font-size:0.98rem;
  line-height:1.7;
}

/* ---------------- header ---------------- */

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(11,18,32,0.86);
  border-bottom:1px solid var(--border-soft);
  backdrop-filter:saturate(140%) blur(6px);
}

.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:64px;
}

.brand{
  display:flex;
  align-items:center;
  line-height:0;
}

.brand-logo{
  display:block;
  width:auto;
}

.brand-logo-compact{display:none;}

.site-nav{
  display:flex;
  align-items:center;
  gap:28px;
}

.site-nav a{
  font-size:0.86rem;
  color:var(--text-dim);
  transition:color .15s ease;
}
.site-nav a:hover{color:var(--text);}

.nav-links{
  display:flex;
  gap:28px;
}

.nav-cta{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  border:1px solid var(--accent-line);
  color:var(--accent);
  padding:0 16px;
  border-radius:var(--radius);
  font-size:0.82rem;
  font-family:var(--font-mono);
  letter-spacing:0.03em;
  white-space:nowrap;
  transition:background .15s ease, color .15s ease;
}
.nav-cta:hover{background:var(--accent-soft);}
.nav-cta-short{display:none;}

.lang-switch{
  display:flex;
  align-items:center;
  gap:2px;
  font-family:var(--font-mono);
  font-size:0.76rem;
  color:var(--text-faint);
}
.lang-switch a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:40px;
  padding:0 6px;
  color:var(--text-faint);
  transition:color .15s ease;
}
.lang-switch a:hover{color:var(--text);}
.lang-switch a.active{color:var(--accent);}
.lang-switch span{color:var(--text-faint);}

.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:transparent;
  color:var(--text);
  align-items:center;
  justify-content:center;
  cursor:pointer;
}
.nav-toggle svg{width:18px;height:18px;}

@media (max-width:820px){
  .nav-links{
    position:absolute;
    top:64px;
    left:0;
    right:0;
    flex-direction:column;
    align-items:flex-start;
    gap:0;
    background:var(--bg);
    border-bottom:1px solid var(--border-soft);
    max-height:0;
    overflow:hidden;
    transition:max-height .2s ease;
  }
  .site-nav.open .nav-links{max-height:320px;}
  .nav-links a{
    width:100%;
    padding:14px 24px;
    border-bottom:1px solid var(--border-soft);
  }
  .nav-toggle{display:flex;}
}

@media (max-width:480px){
  .nav-cta{padding:8px 12px;font-size:0.76rem;}
  .site-header .container{gap:8px;}
  .nav-cta .nav-cta-full{display:none;}
  .nav-cta .nav-cta-short{display:inline;}
  .brand-logo-full{display:none;}
  .brand-logo-compact{display:block;}
}

@media (min-width:1440px){
  .site-header .container{height:76px;}
  .brand-logo-full{height:42px;}
  .site-nav a{font-size:0.92rem;}
  .nav-links{gap:34px;}
  .nav-cta{padding:10px 20px;font-size:0.88rem;}
  .lang-switch{font-size:0.82rem;}
}

/* ---------------- hero ---------------- */

.hero{
  padding:120px 0 88px;
  border-top:0;
  overflow:hidden;
}

.hero .container{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
}

.hero-visual{
  display:flex;
  justify-content:flex-start;
  margin-bottom:28px;
}

.hero-monogram{
  display:block;
  width:auto;
  height:64px;
}

.eyebrow{
  font-family:var(--font-mono);
  font-size:0.76rem;
  letter-spacing:0.2em;
  text-transform:uppercase;
  color:var(--text-dim);
  margin-bottom:22px;
  display:flex;
  align-items:center;
  gap:9px;
}

.eyebrow::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}

.hero h1{
  font-size:clamp(2.4rem,5.6vw,4.2rem);
  font-weight:600;
  line-height:1.08;
  letter-spacing:-0.02em;
  max-width:820px;
}

.hero h1 em{
  font-style:normal;
  color:var(--accent-cyan);
}

.hero .subtitle{
  margin-top:24px;
  color:var(--text-dim);
  font-size:1.05rem;
  line-height:1.75;
  max-width:560px;
}

.hero-actions{
  margin-top:36px;
  display:flex;
  gap:14px;
  flex-wrap:wrap;
}

@media (min-width:900px){
  .hero .container{
    display:grid;
    grid-template-columns:1.15fr 0.85fr;
    align-items:center;
    gap:48px;
  }
  .hero-content{grid-column:1;grid-row:1;}
  .hero-visual{
    grid-column:2;
    grid-row:1;
    margin-bottom:0;
    justify-content:center;
  }
  .hero-monogram{
    height:clamp(220px,20vw,320px);
  }
}

@media (min-width:1440px){
  .hero-monogram{height:clamp(260px,19vw,380px);}
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:13px 22px;
  border-radius:var(--radius);
  font-size:0.9rem;
  font-family:var(--font-mono);
  letter-spacing:0.02em;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .15s ease, border-color .15s ease, color .15s ease;
}

.btn-primary{
  background:var(--accent);
  color:var(--text);
}
.btn-primary:hover{background:#2f93ff;}

.btn-secondary{
  border-color:var(--border);
  color:var(--text);
}
.btn-secondary:hover{border-color:var(--accent-line);color:var(--accent);}

/* ---------------- project ---------------- */

.project-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr;
  gap:56px;
  align-items:start;
}

.project-text p{
  color:var(--text-dim);
  font-size:1rem;
  line-height:1.8;
  margin-bottom:16px;
}
.project-text strong{color:var(--text);font-weight:600;}

.project-facts{
  display:flex;
  flex-direction:column;
  gap:0;
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
}

.project-fact{
  padding:16px 18px;
  border-bottom:1px solid var(--border-soft);
  font-family:var(--font-mono);
  font-size:0.8rem;
}
.project-fact:last-child{border-bottom:none;}

.project-fact .k{
  color:var(--text-faint);
  letter-spacing:0.08em;
  text-transform:uppercase;
  font-size:0.66rem;
  margin-bottom:6px;
}
.project-fact .v{color:var(--text);}

@media (max-width:900px){
  .project-grid{grid-template-columns:1fr;gap:32px;}
}

/* ---------------- architecture ---------------- */

.arch-diagram{
  max-width:760px;
  margin:0 auto;
  display:flex;
  flex-direction:column;
  align-items:center;
}

.arch-step{
  width:100%;
  max-width:440px;
  text-align:center;
  padding:8px 20px;
}

.arch-step-label{
  font-family:var(--font-mono);
  font-size:0.98rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:6px;
}

.arch-step-desc{
  font-size:0.85rem;
  color:var(--text-dim);
  line-height:1.65;
}

.arch-step-core{
  border:1px solid var(--accent-line);
  border-radius:var(--radius);
  background:var(--bg-raised);
  padding:22px 28px;
}
.arch-step-core .arch-step-label{color:var(--accent-cyan);}

.arch-connector{
  width:1px;
  height:40px;
  background:var(--border);
  position:relative;
}
.arch-connector::after{
  content:'';
  position:absolute;
  bottom:-3px;
  left:50%;
  width:6px;
  height:6px;
  border-right:1px solid var(--accent-line);
  border-bottom:1px solid var(--accent-line);
  transform:translateX(-50%) rotate(45deg);
}

.arch-branch{
  display:flex;
  gap:48px;
  justify-content:center;
  position:relative;
  padding-top:28px;
  width:100%;
}
.arch-branch::before{
  content:'';
  position:absolute;
  top:0;
  left:25%;
  right:25%;
  height:1px;
  background:var(--border);
}

.arch-branch-item{
  flex:1 1 200px;
  max-width:220px;
  text-align:center;
  position:relative;
  padding-top:22px;
}
.arch-branch-item::before{
  content:'';
  position:absolute;
  top:0;
  left:50%;
  width:1px;
  height:22px;
  background:var(--border);
}

.arch-tag{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.12em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:6px;
}

.arch-note{
  margin-top:36px;
  text-align:center;
  font-size:0.8rem;
  color:var(--text-faint);
  font-family:var(--font-mono);
}

@media (max-width:640px){
  .arch-branch{
    flex-direction:column;
    align-items:center;
    gap:20px;
    padding-top:0;
  }
  .arch-branch::before{display:none;}
  .arch-branch-item::before{display:none;}
  .arch-branch-item{
    flex:0 1 auto;
    max-width:320px;
    padding-top:0;
  }
}

/* ---------------- infrastructure ---------------- */

.infra-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}

.infra-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  background:var(--bg-raised);
}

.infra-card .name{
  font-family:var(--font-mono);
  font-size:0.92rem;
  color:var(--accent);
  margin-bottom:8px;
}

.infra-card .role{
  font-size:0.98rem;
  font-weight:600;
  margin-bottom:10px;
}

.infra-card .desc{
  color:var(--text-dim);
  font-size:0.86rem;
  line-height:1.65;
}

@media (max-width:700px){
  .infra-grid{grid-template-columns:1fr;}
}

/* ---------------- engineering practice ---------------- */

.practice-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:16px;
}

.practice-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:22px;
  background:var(--bg-raised);
  display:flex;
  flex-direction:column;
  gap:12px;
}

.practice-card .name{
  font-weight:600;
  font-size:1rem;
}

.practice-row{
  font-size:0.82rem;
  line-height:1.6;
}
.practice-row .k{
  font-family:var(--font-mono);
  font-size:0.62rem;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--text-faint);
  display:block;
  margin-bottom:3px;
}
.practice-row .v{color:var(--text-dim);}

@media (max-width:900px){
  .practice-grid{grid-template-columns:1fr;}
}

/* ---------------- principles ---------------- */

.principles-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:16px;
}

.principle-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
}

.principle-kicker{
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--text-faint);
  margin-bottom:10px;
}

.principle-title{
  font-weight:600;
  font-size:1rem;
  margin-bottom:8px;
}

.principle-text{
  color:var(--text-dim);
  font-size:0.86rem;
  line-height:1.65;
}

@media (max-width:700px){
  .principles-grid{grid-template-columns:1fr;}
}

/* ---------------- telemetry ---------------- */

.telemetry-layout{
  display:grid;
  grid-template-columns:1fr 380px;
  gap:32px;
  align-items:start;
}

.telemetry-note{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:20px;
  background:var(--bg-raised);
}

.telemetry-note h3{
  font-size:0.86rem;
  font-family:var(--font-mono);
  color:var(--text);
  margin-bottom:12px;
  letter-spacing:0.02em;
}

.telemetry-note ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.telemetry-note li{
  font-size:0.8rem;
  color:var(--text-dim);
  line-height:1.6;
  padding-left:14px;
  position:relative;
}
.telemetry-note li::before{
  content:'—';
  position:absolute;
  left:0;
  color:var(--text-faint);
}

.panel{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:var(--bg-panel);
  overflow:hidden;
}

.panel-head{
  padding:14px 16px;
  border-bottom:1px solid var(--border);
  display:flex;
  justify-content:space-between;
  align-items:center;
}

.panel-head h3{
  font-family:var(--font-mono);
  font-size:0.72rem;
  letter-spacing:0.14em;
  text-transform:uppercase;
  color:var(--text-dim);
}

.live-badge{
  font-family:var(--font-mono);
  font-size:0.64rem;
  color:var(--ok);
  display:flex;
  align-items:center;
  gap:6px;
}
.live-badge::before{
  content:'';
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--ok);
}

.panel-tabs{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-bottom:1px solid var(--border);
}

.panel-tab{
  border:0;
  background:transparent;
  color:var(--text-faint);
  font-family:var(--font-mono);
  font-size:0.66rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  padding:14px 6px;
  min-height:44px;
  cursor:pointer;
  border-right:1px solid var(--border-soft);
}
.panel-tab:last-child{border-right:none;}
.panel-tab.active{
  color:var(--accent);
  box-shadow:inset 0 -2px 0 var(--accent);
}

.tab-view{display:none;}
.tab-view.active{display:block;}

.stats-row{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  border-bottom:1px solid var(--border);
}
.stat-cell{
  padding:14px 8px;
  text-align:center;
  border-right:1px solid var(--border-soft);
}
.stat-cell:last-child{border-right:none;}
.stat-num{
  font-family:var(--font-mono);
  font-size:1.3rem;
  font-weight:600;
}
.stat-label{
  font-family:var(--font-mono);
  font-size:0.6rem;
  color:var(--text-faint);
  letter-spacing:0.08em;
  text-transform:uppercase;
  margin-top:2px;
}

.feed,.history{
  max-height:360px;
  overflow-y:auto;
}

.feed-empty{
  padding:22px 16px;
  font-size:0.8rem;
  color:var(--text-faint);
  font-family:var(--font-mono);
}

.feed-item,.history-item{
  padding:10px 16px;
  border-bottom:1px solid var(--border-soft);
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--text-dim);
  line-height:1.5;
}

.feed-main,.history-main{
  display:flex;
  align-items:center;
  gap:8px;
  color:var(--text);
  flex-wrap:wrap;
}

.country-pill{
  display:inline-flex;
  align-items:center;
  gap:3px;
  padding:2px 6px;
  border-radius:2px;
  border:1px solid var(--border);
  font-size:0.64rem;
}

.meta{
  display:flex;
  gap:6px;
  margin-top:6px;
  flex-wrap:wrap;
}

.badge{
  padding:1px 6px;
  border-radius:2px;
  font-size:0.6rem;
  border:1px solid var(--border);
  color:var(--text-faint);
}
.badge.active{color:var(--ok);border-color:var(--ok);}
.badge.done{color:var(--text-faint);}

.summary{padding:14px 16px 18px;}

.summary-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:10px;
  margin-bottom:16px;
}
.summary-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:12px;
  text-align:center;
}
.summary-card .value{
  font-family:var(--font-mono);
  font-size:1.15rem;
  font-weight:600;
}
.summary-card .label{
  font-size:0.62rem;
  color:var(--text-faint);
  margin-top:4px;
  text-transform:uppercase;
  letter-spacing:0.06em;
}

.summary-block{margin-bottom:14px;}
.summary-title{
  font-family:var(--font-mono);
  font-size:0.62rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--text-faint);
  margin-bottom:8px;
}
.rank-row{
  display:flex;
  justify-content:space-between;
  font-size:0.78rem;
  padding:6px 0;
  border-bottom:1px solid var(--border-soft);
}
.rank-row:last-child{border-bottom:none;}
.rank-row span{color:var(--text-faint);font-family:var(--font-mono);}

@media (max-width:900px){
  .telemetry-layout{grid-template-columns:1fr;}
}

/* ---------------- explore / connect ---------------- */

.explore-card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:36px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:24px;
  flex-wrap:wrap;
  background:var(--bg-raised);
}

.explore-card .kicker{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.1em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:8px;
}
.explore-card h3{
  font-size:1.3rem;
  font-weight:600;
  margin-bottom:8px;
}
.explore-card p{
  color:var(--text-dim);
  font-size:0.9rem;
  max-width:460px;
  line-height:1.6;
}

.explore-links{
  display:flex;
  gap:16px;
  margin-top:16px;
}
.explore-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  gap:8px;
  padding:0 14px;
  border:1px solid var(--border);
  border-radius:var(--radius);
  color:var(--text-dim);
  font-family:var(--font-mono);
  font-size:0.8rem;
  transition:color .15s ease, border-color .15s ease;
}
.explore-links a:hover{color:var(--text);border-color:var(--accent-line);}

footer{
  padding:32px 24px;
  text-align:center;
  color:var(--text-faint);
  font-family:var(--font-mono);
  font-size:0.72rem;
  line-height:1.8;
}
footer span{color:var(--text-dim);}

/* ---------------- utility ---------------- */

@media (max-width:600px){
  section{padding:64px 0;}
  .hero{padding:88px 0 56px;}
  .explore-card{padding:26px;}
  .hero-logo{height:56px;margin-bottom:22px;}
}