/* ============================================
   Cadernos pesquis.ai — Landing
   Dark tech + provocador
============================================ */

@font-face {
  font-family: 'Landing Sans';
  src: url('fonts/LiberationSans-Regular.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Landing Sans';
  src: url('fonts/LiberationSans-Bold.ttf') format('truetype');
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: 'Landing Serif';
  src: url('fonts/LiberationSerif-Italic.ttf') format('truetype');
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Landing Mono';
  src: url('fonts/LiberationMono-Regular.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --ink-0: #05060A;
  --ink-1: #0A0C12;
  --ink-2: #10131C;
  --ink-3: #171B26;
  --ink-4: #1F2431;
  --ink-5: #2A3040;

  --text-0: #FAFBFF;
  --text-1: #E6E9F2;
  --text-2: #A8AEC0;
  --text-3: #6B7285;
  --text-4: #464C5C;

  --line-1: rgba(255,255,255,0.06);
  --line-2: rgba(255,255,255,0.10);
  --line-3: rgba(255,255,255,0.16);

  --cyan: #6FE3FF;
  --cyan-deep: #15B8E8;
  --violet: #8B7BFF;
  --violet-deep: #5B4BFF;
  --magenta: #FF6FB5;
  --lime: #C7FF5A;
  --amber: #FFB547;

  --accent: var(--cyan);
  --accent-2: var(--violet);
  --accent-3: var(--lime);
  --danger: #FF6B6B;

  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;
  --r-2xl: 32px;

  --density-scale: 1;

  --font-display: 'Landing Sans', system-ui, sans-serif;
  --font-sans: 'Landing Sans', system-ui, sans-serif;
  --font-mono: 'Landing Mono', ui-monospace, monospace;
  --font-serif: 'Landing Serif', Georgia, serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html {
  background: var(--ink-0);
  color: var(--text-1);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(139,123,255,0.12), transparent 60%),
    radial-gradient(900px 700px at -10% 20%, rgba(111,227,255,0.08), transparent 60%),
    var(--ink-0);
  min-height: 100vh;
  overflow-x: hidden;
}

::selection { background: var(--cyan); color: var(--ink-0); }

.h-display {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.02;
  color: var(--text-0);
  text-wrap: balance;
}
.h-section {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text-0);
  text-wrap: balance;
}
.serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
}
.mono { font-family: var(--font-mono); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}
.container-wide { max-width: 1440px; }

.section {
  padding: calc(120px * var(--density-scale)) 0;
  position: relative;
}
.section-tight { padding: calc(80px * var(--density-scale)) 0; }

.hairline { height: 1px; background: var(--line-1); width: 100%; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--r-sm);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
}
.btn-accent { background: var(--cyan); color: var(--ink-0); }
.btn-accent:hover { background: #8CEBFF; transform: translateY(-1px); box-shadow: 0 10px 30px -10px rgba(111,227,255,0.5); }
.btn-ghost { background: transparent; color: var(--text-1); border-color: var(--line-2); }
.btn-ghost:hover { background: var(--ink-3); border-color: var(--line-3); }
.btn-lg { padding: 14px 24px; font-size: 15px; }
.btn-sm { padding: 8px 14px; font-size: 13px; }

.surface {
  background: var(--ink-2);
  border: 1px solid var(--line-1);
  border-radius: var(--r-lg);
}
.surface-raised {
  background: linear-gradient(180deg, var(--ink-3) 0%, var(--ink-2) 100%);
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.04), 0 20px 60px -30px rgba(0,0,0,0.6);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--ink-3);
  border: 1px solid var(--line-2);
  color: var(--text-2);
}
.badge-accent { background: rgba(111,227,255,0.12); border-color: rgba(111,227,255,0.3); color: var(--cyan); }
.badge-violet { background: rgba(139,123,255,0.12); border-color: rgba(139,123,255,0.3); color: var(--violet); }
.badge-lime { background: rgba(199,255,90,0.12); border-color: rgba(199,255,90,0.3); color: var(--lime); }

.dot-pulse {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--lime);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(199,255,90,0.6); }
  50% { box-shadow: 0 0 0 8px rgba(199,255,90,0); }
}

.grad-prisma {
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 55%, var(--magenta) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: translateY(0); }

.noise::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='2' seed='7'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: overlay;
}

.grid-bg {
  background-image:
    linear-gradient(to right, var(--line-1) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-1) 1px, transparent 1px);
  background-size: 60px 60px;
}

@keyframes ticker {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.tweak-panel {
  position: fixed;
  bottom: 24px; right: 24px;
  width: 300px;
  background: var(--ink-2);
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  padding: 16px;
  z-index: 1000;
  box-shadow: 0 20px 60px -20px rgba(0,0,0,0.7);
  font-size: 13px;
}
.tweak-row { display: flex; align-items: center; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--line-1); }
.tweak-row:first-of-type { border-top: none; }
.tweak-label { font-size: 12.5px; color: var(--text-2); }
.swatch-row { display: flex; gap: 6px; }
.swatch { width: 22px; height: 22px; border-radius: 6px; border: 2px solid transparent; cursor: pointer; transition: transform 0.15s; }
.swatch:hover { transform: scale(1.1); }
.swatch.active { border-color: var(--text-0); }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  background: var(--ink-3);
  border: 1px solid var(--line-1);
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.15s;
}
.chip:hover { border-color: var(--line-3); color: var(--text-1); }
.chip.active { background: var(--text-0); color: var(--ink-0); border-color: var(--text-0); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--ink-1); }
::-webkit-scrollbar-thumb { background: var(--ink-4); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-5); }

/* ============================================
   MOBILE — 768px
============================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 64px 0;
  }
  .section-tight {
    padding: 48px 0;
  }

  /* Nav */
  .nav-links { display: none !important; }
  .nav-cta-desktop { display: none !important; }
  .nav-hamburger { display: flex !important; }
  .nav-mobile-menu {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: fixed;
    top: 56px; left: 0; right: 0;
    background: rgba(5,6,10,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-2);
    padding: 8px 0 16px;
    z-index: 99;
  }
  .nav-mobile-menu a {
    display: block;
    padding: 14px 20px;
    font-size: 15px;
    color: var(--text-1);
    text-decoration: none;
    border-bottom: 1px solid var(--line-1);
  }
  .nav-mobile-menu .nav-mobile-cta {
    margin: 12px 16px 0;
    display: flex;
    justify-content: center;
  }

  /* Buttons fullwidth in CTA contexts */
  .btn-cta-group {
    flex-direction: column !important;
    width: 100%;
  }
  .btn-cta-group .btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }

  /* Hero */
  .hero-trust-sep { display: none !important; }

  .hero-price-lock {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 10px !important;
  }
  .hero-price-lock-sep { display: none !important; }
  .hero-trust-items {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 8px !important;
  }
  .hero-para-quem {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Flow */
  .flow-main-grid {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
  }
  .flow-arrow { display: none !important; }
  .flow-before-after {
    grid-template-columns: 1fr !important;
  }
  .flow-before-after-sep { display: none !important; }
  .flow-before-after-after {
    border-top: 1px solid var(--line-1);
  }

  /* Artefatos */
  .artefatos-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 16px !important;
  }
  .artefatos-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Motores */
  .motores-ias-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .motores-value-bar {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 16px !important;
  }
  .motores-value-bar-right {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }

  /* Escrita */
  .escrita-grid {
    grid-template-columns: 1fr !important;
    gap: 36px !important;
  }

  /* Comparativo */
  .comparativo-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .comparativo-table {
    min-width: 640px;
  }

  /* Prova */
  .prova-stats {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Precos */
  .precos-lumens-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  .precos-plans-grid {
    grid-template-columns: 1fr !important;
  }

  /* FAQ */
  .faq-grid {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }
  .faq-sticky { position: static !important; }

  /* Footer CTA */
  .footer-cta-outer {
    padding: 32px 24px !important;
  }
  .footer-cta-grid {
    grid-template-columns: 1fr !important;
    gap: 28px !important;
  }
  .footer-links-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 28px !important;
  }
  .footer-bottom {
    flex-direction: column !important;
    gap: 10px !important;
    text-align: center !important;
  }

  /* Marketplace / Studio */
  .studio-grid {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }
  .marketplace-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 16px !important;
  }
  .marketplace-cards {
    grid-template-columns: 1fr !important;
  }
  .marketplace-steps {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  .marketplace-step-border {
    border-right: none !important;
    padding-right: 0 !important;
    padding-bottom: 20px !important;
    border-bottom: 1px solid var(--line-1) !important;
  }
  .marketplace-step-border:last-child {
    border-bottom: none !important;
    padding-bottom: 0 !important;
  }

  /* Garantia */
  .garantia-inner {
    padding: 40px 24px !important;
  }
  .garantia-items {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }

  /* Dor */
  .dor-grid {
    grid-template-columns: 1fr !important;
  }

  /* StickyBar */
  .stickybar-inner {
    flex-direction: column !important;
    gap: 10px !important;
    padding: 12px 16px !important;
    padding-right: 48px !important;
  }
  .stickybar-inner .btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }

  /* Tweaks panel */
  .tweak-panel { display: none !important; }
}

/* ============================================
   MOBILE SMALL — 480px
============================================ */
@media (max-width: 480px) {
  .hero-para-quem {
    grid-template-columns: 1fr !important;
  }
  .artefatos-grid {
    grid-template-columns: 1fr !important;
  }
  .motores-ias-grid {
    grid-template-columns: 1fr !important;
  }
  .prova-stats {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  .footer-links-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ============================================
   MOBILE XS — 380px
============================================ */
@media (max-width: 380px) {
  html { font-size: 15px; }

  .container { padding: 0 12px; }

  .h-display { font-size: clamp(30px, 9vw, 40px) !important; }
  .h-section  { font-size: clamp(24px, 7vw, 32px) !important; }

  .btn { min-height: 44px; }
  .btn-lg { min-height: 48px; }

  .prova-stats {
    grid-template-columns: 1fr !important;
  }
}