/* ============ TOKENS — LIGHT ============ */
:root {
  --primary: #4F46E5;
  --primary-dark: #4338CA;
  --primary-light: #EDE9FE;
  --secondary: #F97316;
  --bg: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-section-alt: #FFFFFF;
  --text: #1E293B;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --success: #22C55E;
  --footer-bg: #1E293B;
  --footer-border: rgba(255,255,255,.08);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow: 0 4px 16px rgba(0,0,0,.1), 0 2px 8px rgba(0,0,0,.06);
  --shadow-lg: 0 20px 40px rgba(0,0,0,.12), 0 8px 20px rgba(0,0,0,.08);
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --transition-theme: background-color .3s ease, border-color .3s ease, color .3s ease, box-shadow .3s ease;
}

/* ============ TOKENS — DARK ============ */
html[data-theme="dark"] {
  --bg: #0F172A;
  --bg-card: #1E293B;
  --bg-section-alt: #111827;
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --border: rgba(148,163,184,.15);
  --footer-bg: #020617;
  --footer-border: rgba(255,255,255,.06);
  --shadow-sm: 0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
  --shadow: 0 4px 16px rgba(0,0,0,.5), 0 2px 8px rgba(0,0,0,.3);
  --shadow-lg: 0 20px 40px rgba(0,0,0,.6), 0 8px 20px rgba(0,0,0,.4);
}

/* ============ BASE ============ */
*,*::before,*::after { box-sizing: border-box; }
html,body { margin:0; padding:0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  line-height: 1.6;
  transition: var(--transition-theme);
}
img,svg { display:block; max-width:100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
h1,h2,h3,h4 { margin:0; font-weight:700; line-height:1.15; }
p { margin:0; color: var(--text-muted); }
em { font-style: italic; }
code {
  font-family: ui-monospace, monospace; font-size: .9em;
  background: var(--border); color: var(--text-muted);
  padding: 1px 6px; border-radius: 4px;
  transition: var(--transition-theme);
}

/* ============ LAYOUT ============ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ============ SECTIONS ============ */
.section { padding: 96px 0; }
.section__head { text-align: center; margin-bottom: 64px; }
.section__head h2 { font-size: clamp(28px, 4vw, 44px); color: var(--text); margin-bottom: 16px; transition: var(--transition-theme); }
.section__head p { font-size: 18px; max-width: 600px; margin: 0 auto; }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items:center; justify-content:center; gap: 8px;
  padding: 11px 22px; border-radius: 999px;
  font-size: 15px; font-weight: 600;
  transition: all .2s cubic-bezier(.2,.9,.2,1);
  white-space: nowrap; cursor: pointer; border: none;
  text-decoration: none;
}
.btn:active { transform: scale(.97); }
.btn--primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(79,70,229,.35); }
.btn--primary:hover { background: var(--primary-dark); box-shadow: 0 6px 20px rgba(79,70,229,.45); transform: translateY(-1px); }
.btn--ghost {
  background: transparent;
  border: 1.5px solid var(--border);
  color: var(--text);
  transition: all .2s, border-color .3s, color .3s;
}
.btn--ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn--outline { background: transparent; border: 1.5px solid rgba(79,70,229,.35); color: var(--primary); }
.btn--outline:hover { background: var(--primary-light); border-color: var(--primary); }
html[data-theme="dark"] .btn--outline { border-color: rgba(167,139,250,.4); color: #A78BFA; }
html[data-theme="dark"] .btn--outline:hover { background: rgba(79,70,229,.15); border-color: #A78BFA; }
.btn--white { background: #fff; color: var(--primary); box-shadow: 0 4px 14px rgba(0,0,0,.15); }
.btn--white:hover { background: #f0f0ff; transform: translateY(-1px); }
.btn--lg { padding: 14px 28px; font-size: 16px; }
.btn--block { width: 100%; }

/* ============ REVEAL ============ */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s cubic-bezier(.2,.9,.2,1), transform .7s cubic-bezier(.2,.9,.2,1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ============ NAVBAR ============ */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items:center; gap: 16px;
  padding: 0 32px; height: 64px;
  background: rgba(248,250,252,.92);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s, background .3s, border-color .3s;
}
html[data-theme="dark"] .nav {
  background: rgba(15,23,42,.92);
  border-bottom-color: rgba(148,163,184,.1);
}
.nav.is-scrolled { box-shadow: var(--shadow-sm); }
.nav__brand { display:flex; align-items:center; gap:10px; font-weight:700; font-size:18px; color: var(--primary); flex-shrink:0; }
.nav__logo { border-radius: 8px; }
.nav__name { color: var(--primary); }
.nav__menu {
  display: flex; gap: 32px; margin: 0 auto;
  list-style: none; padding: 0;
  font-size: 15px; font-weight: 500;
}
.nav__menu a { color: var(--text-muted); transition: color .2s; position: relative; }
.nav__menu a::after {
  content:""; position:absolute; left:0; right:0; bottom:-4px; height:2px;
  background: var(--primary); border-radius:1px;
  transform: scaleX(0); transform-origin: left;
  transition: transform .25s cubic-bezier(.2,.9,.2,1);
}
.nav__menu a:hover { color: var(--primary); }
.nav__menu a:hover::after { transform: scaleX(1); }

/* Right controls cluster */
.nav__right { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav__cta { display:flex; gap: 10px; }

/* Language switcher */
.lang-switcher {
  display: flex; align-items: center; gap: 4px;
  font-size: 13px; font-weight: 600;
}
.lang-sep { color: var(--border); }
.lang-btn {
  padding: 4px 8px; border-radius: 6px; cursor: pointer;
  color: var(--text-muted); background: none; border: none; font-size: 13px; font-weight: 600;
  transition: all .2s;
}
.lang-btn:hover { color: var(--primary); }
.lang-btn.is-active { color: var(--primary); background: var(--primary-light); }
html[data-theme="dark"] .lang-btn.is-active { background: rgba(79,70,229,.2); }

/* Theme toggle */
.theme-toggle {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); border: 1.5px solid var(--border);
  transition: all .2s;
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-light); }
html[data-theme="dark"] .theme-toggle:hover { background: rgba(79,70,229,.2); }
/* Show sun in dark mode, moon in light mode */
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
html[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
html[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Hamburger */
.nav__hamburger {
  display: none; flex-direction: column; gap: 5px;
  padding: 8px; margin-left: 8px; border-radius: 8px;
  transition: background .2s;
}
.nav__hamburger:hover { background: var(--border); }
.nav__hamburger span { display:block; width:22px; height:2px; background: var(--text); border-radius:2px; transition: all .3s; }
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none; position: fixed; inset: 64px 0 0;
  background: var(--bg-card); z-index: 90; padding: 24px;
  transform: translateX(100%); transition: transform .3s cubic-bezier(.2,.9,.2,1), background .3s;
  border-top: 1px solid var(--border);
}
.mobile-menu.is-open { transform: translateX(0); display: block; }
.mobile-menu ul { list-style:none; padding:0; margin:0 0 32px; display:flex; flex-direction:column; gap:4px; }
.mobile-menu ul a { display:block; padding: 14px 16px; font-size:18px; font-weight:500; color: var(--text); border-radius: 10px; transition: background .2s, color .2s; }
.mobile-menu ul a:hover { background: var(--bg); color: var(--primary); }
.mobile-menu__controls {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 0; border-top: 1px solid var(--border); margin-bottom: 20px;
}
.mobile-menu__controls .lang-switcher { display: flex; }
.mobile-menu__controls .theme-toggle { display: flex; }

/* ============ HERO ============ */
.hero {
  position: relative; min-height: 90vh;
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;
  padding: 80px 80px 60px; max-width: 1400px; margin: 0 auto;
}
.hero__bg {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(135deg, var(--bg) 0%, var(--primary-light) 60%, #E0E7FF 100%);
  transition: var(--transition-theme);
}
html[data-theme="dark"] .hero__bg {
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 60%, #1E293B 100%);
}
.hero__badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: #EDE9FE; color: #4C1D95;
  padding: 6px 14px; border-radius: 999px;
  font-size: 13px; font-weight: 600; margin-bottom: 24px;
}
html[data-theme="dark"] .hero__badge { background: rgba(79,70,229,.25); color: #C4B5FD; }
.hero__title {
  font-size: clamp(36px, 5vw, 64px); color: var(--text);
  line-height: 1.1; letter-spacing: -0.025em; margin-bottom: 20px;
  transition: var(--transition-theme);
}
.hero__sub {
  font-size: clamp(16px, 1.5vw, 19px); color: var(--text-muted);
  line-height: 1.65; max-width: 520px; margin-bottom: 36px;
}
.hero__cta { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.hero__trust { display: flex; gap: 24px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; font-size: 14px; color: var(--text-muted); font-weight: 500; }
.hero__trust li { display: flex; align-items: center; gap: 8px; }

/* Phone frame */
.hero__visual { position: relative; display: flex; justify-content: center; align-items: center; padding: 40px 0; }
.phone-frame {
  position: relative; width: 260px; min-width: 240px;
  background: #0F172A;
  border-radius: 36px; padding: 12px;
  box-shadow: 0 40px 80px rgba(0,0,0,.25), 0 0 0 1px rgba(255,255,255,.1);
  z-index: 2;
}
html[data-theme="dark"] .phone-frame { box-shadow: 0 40px 80px rgba(0,0,0,.5), 0 0 0 1px rgba(255,255,255,.08); }
.phone-notch { width: 80px; height: 20px; background: #0F172A; border-radius: 0 0 14px 14px; margin: 0 auto; position: relative; z-index: 10; }
.phone-screen {
  background: var(--bg); border-radius: 26px; overflow: hidden;
  min-height: 500px; display: flex; flex-direction: column;
  margin-top: -10px; transition: background .3s;
}
.app-header {
  background: var(--primary); padding: 14px 16px 10px;
  display: flex; justify-content: space-between; align-items: center; padding-top: 22px;
}
.app-header__title { color: #fff; font-size: 13px; font-weight: 600; }
.app-header__badge { background: rgba(255,255,255,.2); color:#fff; font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 999px; display: flex; align-items: center; gap: 4px; }
.app-header__badge::before { content:""; width:6px; height:6px; border-radius:50%; background:#4ade80; animation: blink 1.5s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }
.app-tabs {
  display:flex; gap: 0; background: var(--border); padding: 4px;
  margin: 10px 10px 8px; border-radius: 999px;
  transition: background .3s;
}
.app-tab { flex:1; text-align:center; font-size:10px; font-weight:600; color: var(--text-muted); padding: 5px 4px; border-radius:999px; transition: color .2s; }
.app-tab--active { background: var(--bg-card); color:var(--primary); box-shadow: var(--shadow-sm); transition: background .3s; }
.room-board { display:flex; flex-direction:column; gap: 8px; padding: 0 10px; flex:1; overflow:hidden; }
.room-card {
  padding: 10px 12px; border-radius: 12px;
  border-left: 3px solid transparent;
  background: var(--bg-card); box-shadow: var(--shadow-sm);
  display: flex; justify-content: space-between; align-items: center;
  transition: background .3s, box-shadow .3s;
}
.room-card--departure { border-left-color: #EF4444; }
.room-card--prearrival { border-left-color: #7C3AED; }
.room-card--inprogress { border-left-color: #22C55E; box-shadow: 0 0 0 1px rgba(34,197,94,.2), var(--shadow-sm); }
.room-card--completed { border-left-color: #64748B; opacity:.75; }
.room-card--stayover { border-left-color: #F97316; }
.room-card__num { font-size: 13px; font-weight: 700; color: var(--text); }
.room-card__type { font-size: 9px; font-weight: 600; color: var(--text-muted); }
.room-card__status { font-size: 10px; font-weight: 600; color: var(--text-muted); }
.room-card__status--live { color: #22C55E; display:flex; align-items:center; gap:4px; }
.live-dot { width:6px; height:6px; border-radius:50%; background:#22C55E; animation: blink 1.2s infinite; flex-shrink:0; }
.app-footer-bar {
  display: flex; justify-content: space-around; padding: 10px;
  background: var(--bg-card); border-top: 1px solid var(--border);
  font-size: 18px; margin-top: auto; transition: background .3s, border-color .3s;
}
/* Floating cards */
.hero__float { position: absolute; z-index: 3; }
.hero__float--a { top: 8%; right: -8%; }
.hero__float--b { bottom: 12%; left: -10%; }
.float-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg-card); border-radius: 16px; padding: 12px 16px;
  box-shadow: var(--shadow); border: 1px solid var(--border);
  white-space: nowrap; animation: floatY 5s ease-in-out infinite;
  transition: background .3s, border-color .3s, box-shadow .3s;
}
.hero__float--b .float-card { animation-delay: -2.5s; }
.float-card__icon { font-size: 22px; }
.float-card__label { font-size: 11px; color: var(--text-muted); font-weight: 500; }
.float-card__val { font-size: 13px; font-weight: 700; color: var(--text); }
@keyframes floatY { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-10px)} }

/* Hero phone stack (real screenshots) */
.hero__phones-stack {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}
.hero__phone-main {
  width: 250px;
  position: relative;
  z-index: 3;
  display: block;
  filter: drop-shadow(0 32px 60px rgba(0,0,0,.28)) drop-shadow(0 8px 20px rgba(0,0,0,.14));
}
.hero__phone-side {
  width: 195px;
  position: relative;
  z-index: 2;
  display: block;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,.22)) drop-shadow(0 4px 12px rgba(0,0,0,.1));
}
.hero__phone-side--left  { transform: rotate(-8deg) translateX(36px) translateY(18px); }
.hero__phone-side--right { transform: rotate(8deg)  translateX(-36px) translateY(18px); }

/* ============ PROBLEMA ============ */
.problema { background: var(--bg-section-alt); transition: var(--transition-theme); }
.problema__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 32px; }
.problema__card {
  padding: 36px 28px; border-radius: var(--radius);
  background: var(--bg); border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s, var(--transition-theme);
}
.problema__card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.problema__icon { font-size: 36px; margin-bottom: 20px; }
.problema__card h3 { font-size: 20px; color: var(--text); margin-bottom: 12px; transition: var(--transition-theme); }
.problema__card p { font-size: 15px; line-height: 1.65; }

/* ============ HOW IT WORKS ============ */
.how { background: var(--bg); transition: var(--transition-theme); }
.steps { display: flex; align-items: flex-start; gap: 0; }
.step {
  flex: 1; padding: 28px 24px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  display: flex; flex-direction: column; gap: 12px;
  transition: transform .3s, box-shadow .3s, var(--transition-theme);
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.step__num { font-size: 11px; font-weight: 700; color: var(--primary); letter-spacing: .1em; text-transform: uppercase; }
.step__icon { font-size: 28px; }
.step h3 { font-size: 17px; color: var(--text); transition: var(--transition-theme); }
.step p { font-size: 14px; line-height: 1.65; }
.step__connector { flex-shrink: 0; width: 32px; display: flex; align-items: center; justify-content: center; color: var(--border); font-size: 20px; margin-top: 60px; font-weight: 300; }

/* ============ FEATURES ============ */
.features { background: var(--bg-section-alt); transition: var(--transition-theme); }
.features__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.feature-card {
  padding: 32px 28px; border-radius: var(--radius);
  background: var(--bg); border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s, var(--transition-theme);
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(79,70,229,.25); }
.feature-card__icon { font-size: 32px; margin-bottom: 18px; }
.feature-card h3 { font-size: 18px; color: var(--text); margin-bottom: 12px; transition: var(--transition-theme); }
.feature-card p { font-size: 14px; line-height: 1.7; }
.feature-card em { color: var(--text-muted); font-style: italic; }

/* ============ ROLES ============ */
.roles { background: var(--bg); transition: var(--transition-theme); }
.roles__grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.role-card {
  padding: 32px 28px; border-radius: var(--radius);
  background: var(--bg-card); border: 1px solid var(--border);
  transition: transform .3s, box-shadow .3s, var(--transition-theme);
}
.role-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.role-card__badge {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .08em;
  padding: 4px 10px; border-radius: 6px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 14px;
}
.role-card__badge--sup { background: #FEF3C7; color: #92400E; }
.role-card__badge--clean { background: #DCFCE7; color: #166534; }
.role-card__badge--recep { background: #DBEAFE; color: #1E40AF; }
.role-card__badge--maint { background: #FEE2E2; color: #991B1B; }
.role-card__badge--house { background: #FCE7F3; color: #831843; }
html[data-theme="dark"] .role-card__badge { background: rgba(79,70,229,.2); }
html[data-theme="dark"] .role-card__badge--sup { background: rgba(234,179,8,.15); color: #FDE68A; }
html[data-theme="dark"] .role-card__badge--clean { background: rgba(34,197,94,.15); color: #86EFAC; }
html[data-theme="dark"] .role-card__badge--recep { background: rgba(59,130,246,.15); color: #93C5FD; }
html[data-theme="dark"] .role-card__badge--maint { background: rgba(239,68,68,.15); color: #FCA5A5; }
html[data-theme="dark"] .role-card__badge--house { background: rgba(236,72,153,.15); color: #F9A8D4; }
.role-card h3 { font-size: 20px; color: var(--text); margin-bottom: 12px; transition: var(--transition-theme); }
.role-card p { font-size: 14px; line-height: 1.65; }

/* ============ IA ============ */
.ia { background: linear-gradient(160deg, #1E1B4B 0%, #312E81 55%, #1E1B4B 100%); padding: 96px 0; position: relative; overflow: hidden; }
.ia::before {
  content: ""; position: absolute; width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(167,139,250,.12) 0%, transparent 70%);
  top: -100px; right: -100px; pointer-events: none;
}
.ia::after {
  content: ""; position: absolute; width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(99,102,241,.1) 0%, transparent 70%);
  bottom: -80px; left: -80px; pointer-events: none;
}

/* Header */
.ia__head { text-align: center; margin-bottom: 72px; position: relative; z-index: 1; }
.ia__badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.12); color: #C4B5FD;
  padding: 6px 18px; border-radius: 999px;
  font-size: 13px; font-weight: 600; margin-bottom: 24px;
  border: 1px solid rgba(255,255,255,.18);
}
.ia__head h2 { font-size: clamp(30px, 4.5vw, 52px); color: #fff; margin-bottom: 20px; letter-spacing: -0.02em; }
.ia__head p { font-size: 18px; color: #A5B4FC; max-width: 580px; margin: 0 auto; line-height: 1.65; }

/* Main 2-col */
.ia__main {
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center;
  margin-bottom: 72px; position: relative; z-index: 1;
}
.ia__left h3 { font-size: clamp(22px, 2.5vw, 30px); color: #fff; margin-bottom: 16px; letter-spacing: -0.02em; }
.ia__left p { font-size: 16px; color: #A5B4FC; line-height: 1.7; margin-bottom: 32px; }

/* Capability chips */
.ia__chips { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }
.ia__chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.1); color: #E0E7FF;
  border: 1px solid rgba(255,255,255,.18); border-radius: 999px;
  padding: 7px 16px; font-size: 14px; font-weight: 500;
  transition: background .2s, border-color .2s;
}
.ia__chip:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.35); }

/* CTA button inside IA */
.ia__cta-btn {
  background: #fff; color: #4F46E5;
  padding: 13px 28px; border-radius: 999px;
  font-size: 15px; font-weight: 700;
  box-shadow: 0 4px 20px rgba(0,0,0,.25);
  transition: transform .2s, box-shadow .2s, background .2s;
}
.ia__cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,.3); background: #F0F0FF; }

/* NemoClaw Chat mockup */
.nemo-chat {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 20px; overflow: hidden;
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 60px rgba(0,0,0,.4);
}
.nemo-chat__header {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,.08);
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.nemo-chat__avatar {
  width: 40px; height: 40px; border-radius: 50%;
  background: linear-gradient(135deg, #6366F1, #8B5CF6);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(167,139,250,.3);
}
.nemo-chat__name { font-size: 14px; font-weight: 700; color: #fff; }
.nemo-chat__status { font-size: 12px; color: #A5B4FC; display: flex; align-items: center; gap: 6px; margin-top: 2px; }
.nemo-chat__body {
  min-height: 260px; max-height: 300px; overflow-y: auto;
  padding: 20px; display: flex; flex-direction: column; gap: 12px;
  scroll-behavior: smooth;
}
.nemo-chat__body::-webkit-scrollbar { width: 4px; }
.nemo-chat__body::-webkit-scrollbar-track { background: transparent; }
.nemo-chat__body::-webkit-scrollbar-thumb { background: rgba(255,255,255,.15); border-radius: 2px; }

/* Chat messages */
.chat-msg {
  max-width: 82%; padding: 11px 16px; border-radius: 16px;
  font-size: 14px; line-height: 1.55;
  opacity: 0; transform: translateY(8px);
  transition: opacity .35s ease, transform .35s ease;
}
.chat-msg.is-visible { opacity: 1; transform: none; }
.chat-msg--user {
  background: rgba(99,102,241,.35); color: #E0E7FF;
  border-radius: 16px 16px 4px 16px; align-self: flex-start;
  border: 1px solid rgba(99,102,241,.4);
}
.chat-msg--bot {
  background: rgba(255,255,255,.1); color: #F1F5F9;
  border-radius: 16px 16px 16px 4px; align-self: flex-end;
  border: 1px solid rgba(255,255,255,.14);
}
.chat-msg--bot strong { color: #A5B4FC; }

/* Typing indicator */
.chat-typing {
  display: flex; gap: 5px; padding: 12px 16px;
  background: rgba(255,255,255,.1); border-radius: 16px 16px 16px 4px;
  width: fit-content; align-self: flex-end;
  border: 1px solid rgba(255,255,255,.12);
}
.chat-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: #A5B4FC; animation: chatDot 1.3s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: .18s; }
.chat-typing span:nth-child(3) { animation-delay: .36s; }
@keyframes chatDot { 0%,60%,100%{opacity:.3;transform:translateY(0)} 30%{opacity:1;transform:translateY(-4px)} }

/* Chat footer/input */
.nemo-chat__footer { padding: 14px 16px; border-top: 1px solid rgba(255,255,255,.1); }
.nemo-chat__input-row {
  display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px; padding: 10px 10px 10px 18px;
}
.nemo-chat__prompt { font-size: 13px; color: rgba(255,255,255,.45); flex: 1; }
.nemo-chat__send {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  background: #6366F1; color: #fff; font-size: 14px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  cursor: default;
}

/* 4-column grid */
.ia__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; position: relative; z-index: 1; }
.ia__grid--4 { grid-template-columns: repeat(4,1fr); }
.ia__card {
  padding: 32px 24px; background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius);
  backdrop-filter: blur(8px); transition: background .3s, transform .3s;
}
.ia__card:hover { background: rgba(255,255,255,.13); transform: translateY(-4px); border-color: rgba(167,139,250,.4); }
.ia__card-icon { font-size: 28px; margin-bottom: 16px; }
.ia__card h3 { font-size: 17px; color: #fff; margin-bottom: 10px; font-weight: 700; }
.ia__card p { font-size: 14px; color: #A5B4FC; line-height: 1.65; }

/* ============ TIPOS ============ */
.tipos { background: var(--bg-section-alt); transition: var(--transition-theme); }
.tipos__grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }
.tipo-badge {
  display: flex; align-items: center; gap: 14px;
  background-color: var(--tipo-bg, #F8FAFC);
  border: 1.5px solid var(--tipo-border, #E2E8F0);
  border-radius: var(--radius-sm); padding: 16px 18px;
  transition: transform .25s, box-shadow .25s;
}
html[data-theme="dark"] .tipo-badge { filter: brightness(.85) saturate(.8); }
.tipo-badge:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
html[data-theme="dark"] .tipo-badge:hover { filter: brightness(.95) saturate(1); }
.tipo-badge__dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; }
.tipo-badge strong { display: block; font-size: 14px; color: var(--tipo-text, #1E293B); margin-bottom: 2px; }
.tipo-badge span { font-size: 12px; color: var(--text-muted); }

/* ============ STACK ============ */
.stack { background: var(--bg); transition: var(--transition-theme); }
.stack__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.stack__col {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px 36px;
  transition: var(--transition-theme);
}
.stack__col-head { display: flex; align-items: center; gap: 14px; margin-bottom: 28px; }
.stack__col-icon { font-size: 28px; }
.stack__col h3 { font-size: 22px; color: var(--text); transition: var(--transition-theme); }
.stack__list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.stack__list li { display: flex; align-items: flex-start; gap: 12px; font-size: 15px; color: var(--text-muted); line-height: 1.5; }
.stack__list li::before { content: "✓"; color: var(--success); font-weight: 700; flex-shrink: 0; margin-top: 1px; }

/* ============ CTA SECTION ============ */
.cta-section { background: var(--primary); padding: 96px 0; }
.cta-section__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.cta-section__text h2 { font-size: clamp(26px, 3.5vw, 40px); color: #fff; margin-bottom: 16px; }
.cta-section__text p { font-size: 17px; color: rgba(255,255,255,.8); line-height: 1.65; }
.cta-form { display: flex; flex-direction: column; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 14px; font-weight: 600; color: rgba(255,255,255,.85); }
.form-group input {
  padding: 13px 16px; border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,.25);
  background: rgba(255,255,255,.12); color: #fff;
  font-size: 15px; font-family: inherit; outline: none;
  transition: border-color .2s, background .2s;
}
.form-group input::placeholder { color: rgba(255,255,255,.45); }
.form-group input:focus { border-color: rgba(255,255,255,.7); background: rgba(255,255,255,.18); }
.cta-form__note { font-size: 13px; color: rgba(255,255,255,.6); text-align: center; }
.cta-form .btn--white { font-size: 16px; padding: 15px; }
.form-success { display:none; background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.25); border-radius: var(--radius-sm); padding: 28px; text-align: center; color: #fff; }
.form-success h3 { font-size: 20px; margin-bottom: 8px; }
.form-success p { color: rgba(255,255,255,.8); }

/* ============ FOOTER ============ */
.footer { background: var(--footer-bg); padding: 64px 0 32px; transition: background .3s; }
.footer__grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer__brand p { font-size: 14px; color: #94A3B8; max-width: 240px; margin: 12px 0 20px; }
.footer__brand-name { color: #fff !important; }
.footer__stores { display: flex; flex-direction: column; gap: 8px; }
.store-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.07); color: #CBD5E1;
  border: 1px solid rgba(255,255,255,.1); padding: 8px 14px;
  border-radius: 10px; font-size: 13px; font-weight: 500; cursor: default;
  transition: background .2s;
}
.store-badge:hover { background: rgba(255,255,255,.12); }
.footer__nav { display: flex; flex-direction: column; gap: 12px; padding-top: 8px; }
.footer__nav a { font-size: 15px; color: #94A3B8; transition: color .2s; }
.footer__nav a:hover { color: #fff; }
.footer__info { padding-top: 8px; }
.footer__info p { font-size: 14px; color: #94A3B8; margin-bottom: 8px; }
.footer__copy { font-size: 13px; color: #64748B; margin-top: 24px !important; }

/* ============ SCREENSHOTS ============ */
.screenshots { background: var(--bg-section-alt); transition: var(--transition-theme); }

.ss-tabs {
  display: flex; gap: 8px; flex-wrap: wrap;
  justify-content: center; margin-bottom: 40px;
}
.ss-tab {
  padding: 10px 24px; border-radius: 999px;
  font-size: 14px; font-weight: 600;
  border: 1.5px solid var(--border); color: var(--text-muted);
  background: var(--bg-card); cursor: pointer;
  transition: all .2s;
}
.ss-tab:hover { border-color: var(--primary); color: var(--primary); }
.ss-tab.is-active {
  background: var(--primary); color: #fff;
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(79,70,229,.3);
}
html[data-theme="dark"] .ss-tab.is-active { box-shadow: 0 4px 14px rgba(79,70,229,.5); }

.ss-gallery { min-height: 520px; }
.ss-panel { display: none; flex-direction: column; align-items: center; gap: 40px; }
.ss-panel.is-active { display: flex; animation: ssFadeIn .4s cubic-bezier(.2,.9,.2,1); }
@keyframes ssFadeIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.ss-phones {
  display: flex; gap: 20px; align-items: flex-end;
  justify-content: center; flex-wrap: wrap;
}
.ss-phones--centered { justify-content: center; gap: 28px; }
.ss-phone {
  width: 210px;
  display: block;
  filter: drop-shadow(0 20px 44px rgba(0,0,0,.2)) drop-shadow(0 6px 16px rgba(0,0,0,.1));
  transition: transform .35s cubic-bezier(.2,.9,.2,1), filter .35s;
}
.ss-phone:hover {
  transform: translateY(-10px) scale(1.02);
  filter: drop-shadow(0 32px 56px rgba(0,0,0,.24)) drop-shadow(0 10px 22px rgba(0,0,0,.12));
}
.ss-phone--elevated { transform: translateY(-22px); }
.ss-phone--elevated:hover { transform: translateY(-32px) scale(1.02); }

/* Browser / web screenshots */
.ss-browsers {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px;
  width: 100%; max-width: 1100px;
}
.ss-browser {
  width: 100%; border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 1px var(--border);
  display: block;
  transition: transform .35s cubic-bezier(.2,.9,.2,1), box-shadow .35s;
}
.ss-browser:hover {
  transform: translateY(-5px);
  box-shadow: 0 28px 60px rgba(0,0,0,.2), 0 0 0 1px var(--border);
}

.ss-desc { text-align: center; max-width: 580px; }
.ss-desc h3 {
  font-size: clamp(20px, 2.5vw, 26px); color: var(--text);
  margin-bottom: 12px; transition: var(--transition-theme);
}
.ss-desc p { font-size: 16px; line-height: 1.65; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1100px) {
  .nav__cta .btn--ghost { display: none; }
}
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; padding: 60px 32px 48px; min-height: auto; gap: 56px; text-align: center; }
  .hero__content { display: flex; flex-direction: column; align-items: center; }
  .hero__sub { text-align: center; }
  .hero__trust { justify-content: center; }
  .hero__float--a { top: 5%; right: 2%; }
  .hero__float--b { bottom: 5%; left: 2%; }
  .hero__phone-side { width: 160px; }
  .hero__phone-main { width: 210px; }
  .hero__phone-side--left  { transform: rotate(-7deg) translateX(28px) translateY(14px); }
  .hero__phone-side--right { transform: rotate(7deg)  translateX(-28px) translateY(14px); }
  .steps { flex-wrap: wrap; }
  .step { min-width: calc(50% - 24px); }
  .step__connector { display: none; }
  .tipos__grid { grid-template-columns: repeat(2,1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .nav__menu { display: none; }
  .nav__right .nav__cta { display: none; }
  .nav__hamburger { display: flex; }
  .nav { padding: 0 20px; }
  .mobile-menu { display: block; }
  .hero { padding: 48px 20px 40px; }
  .section { padding: 64px 0; }
  .section__head { margin-bottom: 40px; }
  .problema__grid { grid-template-columns: 1fr; gap: 20px; }
  .features__grid { grid-template-columns: 1fr; gap: 16px; }
  .roles__grid { grid-template-columns: 1fr; gap: 16px; }
  .ia__main { grid-template-columns: 1fr; gap: 40px; }
  .ia__grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .ia__grid--4 { grid-template-columns: 1fr 1fr; }
  .stack__grid { grid-template-columns: 1fr; gap: 20px; }
  .tipos__grid { grid-template-columns: 1fr 1fr; }
  .cta-section__inner { grid-template-columns: 1fr; gap: 40px; text-align: center; }
  .step { min-width: 100%; }
  .hero__phone-side { display: none; }
  .hero__phones-stack { padding: 8px 0 0; }
  .hero__phone-main { width: 200px; }
  .hero__float--a, .hero__float--b { display: none; }
  .ss-phone { width: 150px; }
  .ss-phone--elevated { transform: translateY(-14px); }
  .ss-browsers { grid-template-columns: 1fr; }
  .ss-gallery { min-height: auto; }
  .footer__grid { grid-template-columns: 1fr; gap: 32px; }
  .footer__brand { grid-column: auto; }
  .lang-switcher { display: none; }
  .theme-toggle { display: none; }
}
@media (max-width: 480px) {
  .ia__grid--4 { grid-template-columns: 1fr; }
  .tipos__grid { grid-template-columns: 1fr; }
  .hero__cta { flex-direction: column; width: 100%; }
  .hero__cta .btn { width: 100%; justify-content: center; }
  .footer__grid { grid-template-columns: 1fr; }
  .ss-phone { width: 120px; }
  .ss-phone--elevated { transform: translateY(-10px); }
  .ss-phones { gap: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001s !important; transition-duration: .001s !important; }
}