/* ============================================================
   STACKO | Base, tipografia, layout e componentes globais
   ============================================================ */

*,
*::before,
*::after { box-sizing: border-box; }

* { margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 90px;
}

body {
  font-family: var(--font-sans);
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11', 'ss01';
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--text-secondary);
  background: var(--bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }

::selection { background: var(--royal); color: #fff; }

/* Scrollbar refinada */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: var(--graphite-600);
  border-radius: 999px;
  border: 2px solid var(--bg-base);
}
::-webkit-scrollbar-thumb:hover { background: var(--graphite-500); }

/* --- Tipografia --- */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--tracking-tight);
  line-height: var(--lh-tight);
}

.display {
  font-size: var(--fs-display);
  font-weight: var(--fw-semibold);
  letter-spacing: -0.035em;
  line-height: 1.0;
  color: var(--text-primary);
}

/* Texto com leve degradê para títulos-chave */
.text-gradient {
  background: linear-gradient(180deg, #ffffff 0%, #b9b9c4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-royal { color: var(--royal-soft); }

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-wide { max-width: var(--container-wide); }
.container-narrow { max-width: var(--container-narrow); }

.section {
  position: relative;
  padding-block: var(--space-section);
}

/* --- Eyebrow (rótulo de seção) --- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-eyebrow);
  font-weight: var(--fw-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
}
.eyebrow::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--royal-bright);
  box-shadow: 0 0 10px var(--royal-glow);
}

/* --- Cabeçalho de seção --- */
.section-head { max-width: 640px; margin-bottom: var(--space-8); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-title {
  font-size: var(--fs-h2);
  margin-top: var(--space-4);
  margin-bottom: var(--space-4);
}
.section-desc {
  font-size: var(--fs-lg);
  color: var(--text-secondary);
  line-height: 1.55;
}

/* --- Botões --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: -0.01em;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-full);
  transition: transform var(--dur-fast) var(--ease-out),
              background var(--dur-base) var(--ease-out),
              border-color var(--dur-base) var(--ease-out),
              box-shadow var(--dur-base) var(--ease-out),
              color var(--dur-base) var(--ease-out);
  white-space: nowrap;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--text-primary);
  color: var(--text-inverse);
  font-weight: var(--fw-semibold);
}
.btn-primary:hover {
  background: #fff;
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

/* CTA de acento: o azul royal aparece aqui, com parcimônia */
.btn-royal {
  background: var(--royal);
  color: #fff;
  font-weight: var(--fw-semibold);
  box-shadow: 0 8px 30px rgba(0, 0, 255, 0.40), inset 0 1px 0 rgba(255,255,255,0.22);
}
.btn-royal:hover {
  background: var(--royal-bright);
  transform: translateY(-1px);
  box-shadow: 0 12px 44px rgba(0, 0, 255, 0.55), inset 0 1px 0 rgba(255,255,255,0.28);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-primary);
  border: 1px solid var(--border-soft);
}
.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn-lg { padding: 1.05rem 2rem; font-size: var(--fs-body); }
.btn .arrow { transition: transform var(--dur-base) var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

/* --- Cartão base --- */
.card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--dur-base) var(--ease-out),
              background var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

/* --- Pill / tag --- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.02);
}

/* --- Linhas / divisores utilitários --- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-soft), transparent);
  border: none;
}

/* --- Grid de fundo decorativo --- */
.grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, #000 20%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

/* Glow radial reutilizável */
.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: var(--z-glow);
  opacity: 0.55;
}
.glow-royal { background: radial-gradient(circle, var(--royal-glow) 0%, transparent 70%); }

/* ============================================================
   Scroll reveal: animações de entrada suaves (blur + fade + rise)
   ============================================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  filter: blur(6px);
  transition:
    opacity var(--dur-slow) var(--ease-out),
    transform var(--dur-slow) var(--ease-out),
    filter var(--dur-slow) var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform, filter;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-reveal] { opacity: 1; transform: none; filter: none; transition: none; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}