/* ════════════════════════════════════════════════════
   PEG-AI · Design System v2
   Paleta B2C (papel/preto/amarelo) + ponte visual B2B (violeta sutil)
   Tipografia: Fraunces (display) + Inter Tight (sans) + JetBrains Mono
════════════════════════════════════════════════════ */

:root {
  /* ─── PALETA PRIMÁRIA (B2C) ─── */
  --bg:           #F5F1EA;   /* papel quente base */
  --bg-2:         #FFFFFF;   /* branco puro destaques */
  --bg-3:         #ECE6D8;   /* areia alternância */
  --bg-deep:      #0A0A0A;   /* preto profundo (seções tech) */
  --bg-ink:       #111111;   /* preto marca */

  --ink:          #111111;   /* texto principal */
  --ink-deep:     #000000;   /* hover */
  --ink-dim:      #5C5853;   /* cinza médio quente */
  --ink-mute:     #A8A29E;   /* cinza claro */
  --ink-on-dark:  #F5F1EA;   /* texto em fundos escuros */

  --line:         rgba(17,17,17,0.10);
  --line-strong:  rgba(17,17,17,0.22);
  --line-on-dark: rgba(245,241,234,0.15);

  --accent:       #FED401;   /* amarelo PEG-AI oficial */
  --accent-soft:  #FEF4B0;   /* amarelo washed */
  --accent-deep:  #E8C200;   /* amarelo profundo hover */

  /* ─── PONTE VISUAL B2B (uso sutil, áreas tech) ─── */
  --tech-violet:       #6366F1;
  --tech-violet-deep:  #4F46E5;
  --tech-violet-soft:  rgba(99,102,241,0.08);
  --tech-gradient:     linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);

  --live: #16A34A;   /* status online */
  --warn: #DC2626;   /* erros */

  /* ─── TIPOGRAFIA ─── */
  --font-display: 'Fraunces', Georgia, serif;
  --font-sans:    'Inter Tight', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;
  --font-bebas:   'Bebas Neue', sans-serif;

  /* ─── ESPAÇAMENTO ─── */
  --space-1: 4px;    --space-2: 8px;    --space-3: 12px;
  --space-4: 16px;   --space-5: 20px;   --space-6: 24px;
  --space-8: 32px;   --space-10: 40px;  --space-12: 48px;
  --space-16: 64px;  --space-20: 80px;  --space-24: 96px;
  --space-32: 128px;

  /* ─── RADIUS ─── */
  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-pill: 999px;

  /* ─── SHADOWS ─── */
  --shadow-sm: 0 1px 2px rgba(28,25,23,0.05);
  --shadow-md: 0 4px 8px rgba(28,25,23,0.08);
  --shadow-lg: 0 8px 24px rgba(28,25,23,0.12);
  --shadow-xl: 0 24px 60px rgba(28,25,23,0.18);
  --shadow-glow-yellow: 0 0 40px rgba(254,212,1,0.25);
  --shadow-glow-violet: 0 0 40px rgba(99,102,241,0.20);

  /* ─── EASINGS PREMIUM ─── */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ════════════════════════════════════════════════════
   RESET E BASE
════════════════════════════════════════════════════ */

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
::selection { background: var(--accent); color: var(--ink); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ════════════════════════════════════════════════════
   UTILITIES — Layout
════════════════════════════════════════════════════ */

.wrap        { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.wrap-narrow { max-width: 880px;  margin: 0 auto; padding: 0 32px; }

@media (max-width: 720px) {
  .wrap, .wrap-narrow { padding: 0 20px; }
}

/* ════════════════════════════════════════════════════
   UTILITIES — Movimento e Reveal
════════════════════════════════════════════════════ */

/* Reveal on scroll — fade + slide-up sutil */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger delays */
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* Fade-in puro (sem slide) */
.fade-in {
  opacity: 0;
  transition: opacity 1.2s var(--ease-out);
}
.fade-in.in { opacity: 1; }

/* Scale-in para cards */
.scale-in {
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-spring);
}
.scale-in.in {
  opacity: 1;
  transform: scale(1);
}

/* ════════════════════════════════════════════════════
   ANIMAÇÕES — Loops sutis
════════════════════════════════════════════════════ */

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.6; }
}
.pulse-soft { animation: pulse-soft 2.4s var(--ease-in-out) infinite; }

@keyframes float-y {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.float-y { animation: float-y 4s var(--ease-in-out) infinite; }

@keyframes shimmer-line {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes glow-yellow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(254,212,1,0.4); }
  50%      { box-shadow: 0 0 40px 6px rgba(254,212,1,0.15); }
}
.glow-yellow-loop { animation: glow-yellow 3s var(--ease-in-out) infinite; }

/* Pulse de status live (verde) */
@keyframes live-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(22,163,74,0.5); }
  70%      { box-shadow: 0 0 0 8px rgba(22,163,74,0); }
}
.live-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--live);
  animation: live-pulse 2s var(--ease-in-out) infinite;
}

/* ════════════════════════════════════════════════════
   HOVER STATES PREMIUM
════════════════════════════════════════════════════ */

.hover-lift {
  transition: transform 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.hover-scale {
  transition: transform 0.4s var(--ease-spring);
}
.hover-scale:hover {
  transform: scale(1.02);
}

.hover-glow-yellow {
  transition: box-shadow 0.4s var(--ease-out), border-color 0.4s var(--ease-out);
}
.hover-glow-yellow:hover {
  box-shadow: var(--shadow-glow-yellow);
  border-color: var(--accent);
}

/* Link com seta deslizante */
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap 0.3s var(--ease-out);
}
.link-arrow:hover { gap: 14px; }
.link-arrow .arrow { transition: transform 0.3s var(--ease-out); }
.link-arrow:hover .arrow { transform: translateX(2px); }

/* ════════════════════════════════════════════════════
   TIPOGRAFIA UTILITIES
════════════════════════════════════════════════════ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.eyebrow-accent {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--accent-soft);
  border: 1px solid rgba(17,17,17,0.08);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink);
}

.display-xl {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(48px, 7.5vw, 108px);
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--ink);
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(36px, 5vw, 72px);
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.display-md {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 3.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* Sublinhado amarelo (assinatura visual PEG-AI) */
.highlight-yellow {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(180deg,
    transparent 62%,
    var(--accent) 62%,
    var(--accent) 88%,
    transparent 88%);
  padding: 0 6px;
}

/* Sublinhado violeta (áreas tech) */
.highlight-violet {
  font-style: italic;
  font-weight: 400;
  background: linear-gradient(180deg,
    transparent 62%,
    var(--tech-violet-soft) 62%,
    var(--tech-violet-soft) 88%,
    transparent 88%);
  color: var(--tech-violet);
  padding: 0 6px;
}

/* ════════════════════════════════════════════════════
   BOTÕES
════════════════════════════════════════════════════ */

.btn {
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
  padding: 16px 26px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all 0.3s var(--ease-out);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn-primary:hover {
  background: var(--ink-deep);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn-ghost:hover {
  border-color: var(--ink);
  background: rgba(17,17,17,0.04);
}

.btn-accent {
  background: var(--accent);
  color: var(--ink);
  border-color: var(--accent);
}
.btn-accent:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
  transform: translateY(-1px);
}

.btn .arrow { transition: transform 0.3s var(--ease-out); }
.btn:hover .arrow { transform: translateX(4px); }

/* ════════════════════════════════════════════════════
   CARDS BASE
════════════════════════════════════════════════════ */

.card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all 0.4s var(--ease-out);
}
.card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-dark {
  background: var(--bg-deep);
  color: var(--ink-on-dark);
  border: 1px solid var(--line-on-dark);
}

.card-accent {
  background: var(--accent-soft);
  border: 1px solid rgba(232,194,0,0.3);
}

/* ════════════════════════════════════════════════════
   GRID OVERLAY (fundo técnico sutil)
════════════════════════════════════════════════════ */

.grid-overlay {
  position: absolute; inset: 0; z-index: 0;
  opacity: 0.5;
  background-image:
    linear-gradient(rgba(17,17,17,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(17,17,17,0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  pointer-events: none;
}

.grid-overlay-tech {
  position: absolute; inset: 0; z-index: 0;
  opacity: 0.4;
  background-image:
    linear-gradient(rgba(99,102,241,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.06) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 20%, transparent 75%);
  pointer-events: none;
}

/* ════════════════════════════════════════════════════
   GLOW DECORATIVO
════════════════════════════════════════════════════ */

.glow-bg-yellow {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 900px 600px at 75% 25%,
              rgba(254,212,1,0.12), transparent 65%);
}

.glow-bg-violet {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(ellipse 700px 500px at 50% 50%,
              rgba(99,102,241,0.08), transparent 60%);
}

/* ════════════════════════════════════════════════════
   ACESSIBILIDADE — prefers-reduced-motion
════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal  { opacity: 1; transform: none; }
  .fade-in { opacity: 1; }
  .scale-in { opacity: 1; transform: none; }
}