/* ═══════════════════════════════════════════════════════════════
   LEX — base.css
   Fundação: variáveis · reset · tipografia · grid · animações · cursor
   Design system editorial — branco, azul institucional, preto
   ═══════════════════════════════════════════════════════════════ */

/* ── Variáveis ──────────────────────────────────────────────── */
:root {
  /* Cores */
  --color-white:       #FFFFFF;
  --color-off-white:   #F8F8F6;
  --color-blue-tint:   #EDF1F6;           /* lavagem azul suave p/ seções */
  --color-blue-ghost:  #A2A6A9;           /* linhas/bordas — 30% mais escuro (era #E8EDF2) */
  --color-blue:        #4A6580;
  --color-blue-dark:   #2E4155;
  --color-blue-deep:   #223445;           /* azul profundo p/ footer/bandas */
  --color-black:       #0A0A0A;
  --color-gray-mid:    #5B6573;           /* escurecido p/ melhor contraste */
  --color-gray-light:  #5E636E;           /* WCAG AA: ~5.1:1 sobre branco   */
  --color-blue-light:  #B7CCDE;           /* azul claro: ênfase sobre hero escuro */

  /* Cores semânticas */
  --success: #1A7A46;   /* verde: confirmação / sucesso */
  --danger:  #B4232A;   /* vermelho: erro / alerta      */

  /* Gradientes azuis (tom sólido + escurecimento) */
  --grad-blue: linear-gradient(152deg, #4F6A85 0%, #44607A 45%, #314862 100%);
  --grad-deep: linear-gradient(152deg, #1E2E3C 0%, #15202B 52%, #0D141B 100%);

  /* Gradiente suave do tom claro (tint → levemente mais claro) */
  --grad-tint: linear-gradient(180deg, #F4F7FB 0%, #E9EEF4 100%);

  /* Textura noise/grão (SVG feTurbulence) para fundos azuis */
  --tex-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");

  /* Tipografia */
  --font-family:  'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 200;
  --font-light:   300;
  --font-regular: 400;
  --font-medium:  500;

  /* Escala tipográfica */
  --text-display:  clamp(56px, 8vw, 120px);
  --text-headline: clamp(36px, 5vw, 80px);
  --text-title:    clamp(28px, 3.5vw, 48px);
  --text-subhead:  clamp(20px, 2.5vw, 28px);
  --text-body:     16px;
  --text-small:    14px;
  --text-label:    11px;

  /* Espaçamento (escala 8px) */
  --space-xs:  8px;
  --space-sm:  16px;
  --space-md:  24px;
  --space-lg:  48px;
  --space-xl:  80px;
  --space-2xl: 120px;
  --space-3xl: 200px;

  /* Layout */
  --container-max:     1440px;
  --container-padding: clamp(24px, 5.5vw, 80px);
  --grid-columns:      12;
  --grid-gutter:       24px;

  /* Animações */
  --ease-smooth:  cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:     cubic-bezier(0.0, 0.0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-mid:  300ms;
  --duration-slow: 600ms;

  /* Bordas */
  --border-thin: 1px solid var(--color-blue-ghost);
  --border-mid:  1px solid var(--color-blue);
  --border-dark: 1px solid var(--color-black);
  --radius-none: 0;
  --radius-sm:   4px;
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-family);
  font-weight: var(--font-regular);
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-black);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

/* ── Tipografia base ────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-display);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--color-black);
}

p { text-wrap: pretty; }

/* Display — headline monumental, peso leve */
.display {
  font-size: var(--text-display);
  font-weight: var(--font-display);
  line-height: 1.0;
  letter-spacing: -0.03em;
}

.headline {
  font-size: var(--text-headline);
  font-weight: var(--font-display);
  line-height: 1.05;
  letter-spacing: -0.025em;
}

.title {
  font-size: var(--text-title);
  font-weight: var(--font-light);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.subhead {
  font-size: var(--text-subhead);
  font-weight: var(--font-light);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--color-blue);
}

.lead {
  font-size: clamp(17px, 1.4vw, 19px);
  font-weight: var(--font-regular);
  line-height: 1.7;
  color: var(--color-gray-mid);
}

.body-text {
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-gray-mid);
}

/* Label — caps, tracking largo */
.label {
  display: inline-block;
  font-size: var(--text-label);
  font-weight: var(--font-medium);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-blue);
  line-height: 1;
}
.label--muted { color: var(--color-gray-light); }
.label--ghost { color: rgba(255, 255, 255, 0.65); }

/* Número ordinal */
.ordinal {
  font-size: var(--text-label);
  font-weight: var(--font-display);
  letter-spacing: 0.05em;
  color: var(--color-gray-light);
  font-variant-numeric: tabular-nums;
}

em { font-style: normal; color: var(--color-blue); }
strong { font-weight: var(--font-medium); color: var(--color-black); }

/* ── Layout · Grid ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), 1fr);
  gap: var(--grid-gutter);
}

.section {
  padding-block: var(--space-xl);
}
.section--lg { padding-block: var(--space-2xl); }
.section--alt { background: var(--color-off-white); }
.section--tint { background: var(--color-blue-tint); background: var(--grad-tint); }
.section--blue {
  background-color: var(--color-blue);
  background-image: var(--tex-noise), var(--grad-blue);
  background-blend-mode: soft-light, normal;
  color: var(--color-white);
}
.section--deep {
  background-color: var(--color-blue-deep);
  background-image: var(--tex-noise), var(--grad-deep);
  background-blend-mode: soft-light, normal;
  color: var(--color-white);
}

/* ── Moldura de imagem (com fallback azul) ──────────────────── */
.img-frame {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-blue) 0%, var(--color-blue-deep) 100%);
}
.img-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.img-frame--ghost {
  background: linear-gradient(135deg, var(--color-blue-ghost) 0%, var(--color-blue-tint) 100%);
}
/* Overlay azul sutil para coesão da paleta */
.img-frame--tint::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--color-blue);
  mix-blend-mode: color;
  opacity: 0.32;
  pointer-events: none;
}
.img-frame--duo img {
  filter: grayscale(1) contrast(1.05);
  transition: filter var(--duration-slow) var(--ease-smooth);
}
.img-frame--duo:hover img { filter: grayscale(0) contrast(1); }

/* Linha separadora sutil entre seções */
.rule {
  width: 100%;
  height: 1px;
  background: var(--color-blue-ghost);
  border: none;
}

/* ── Utilitários de animação ────────────────────────────────── */
.animate-up {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-slow) var(--ease-smooth),
    transform var(--duration-slow) var(--ease-smooth);
  will-change: opacity, transform;
}
.animate-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-fade {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-smooth);
}
.animate-fade.is-visible { opacity: 1; }

/* Linha que se desenha (clip) */
.animate-line {
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-slow) var(--ease-smooth);
}
.animate-line.is-visible { transform: scaleX(1); }

@media (prefers-reduced-motion: reduce) {
  .animate-up, .animate-fade, .animate-line {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ── Cursor customizado ─────────────────────────────────────── */
.cursor-dot {
  position: fixed;
  top: 0; left: 0;
  width: 24px;
  height: 24px;
  border: 1px solid var(--color-blue);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition:
    width var(--duration-mid) var(--ease-out),
    height var(--duration-mid) var(--ease-out),
    background var(--duration-mid) var(--ease-out),
    border-color var(--duration-mid) var(--ease-out),
    opacity var(--duration-mid) var(--ease-out);
  mix-blend-mode: difference;
  opacity: 0;
}
.cursor-dot.is-active { opacity: 1; }
.cursor-dot.is-hover {
  width: 48px;
  height: 48px;
  background: var(--color-white);
  border-color: var(--color-white);
}
/* Esconde cursor customizado em touch / sem hover fino */
@media (hover: none), (pointer: coarse) {
  .cursor-dot { display: none; }
}

/* ── Acessibilidade · foco ──────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  z-index: 10000;
}
.skip-link:focus { left: var(--space-sm); top: var(--space-sm); }

/* Util de seleção de texto */
::selection { background: var(--color-blue); color: var(--color-white); }

/* ── Transição de página (overlay branco) ───────────────────── */
.page-transition {
  position: fixed;
  inset: 0;
  background: var(--color-white);
  z-index: 9000;
  pointer-events: none;
  opacity: 1;
  transition: opacity 220ms var(--ease-out);
}
.page-transition.is-done { opacity: 0; }
@media (prefers-reduced-motion: reduce) {
  .page-transition { display: none; }
}

/* ── Barra de progresso de scroll ───────────────────────────── */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: var(--color-blue);
  z-index: 1001;
  transition: width 90ms linear;
  pointer-events: none;
}
@media (prefers-reduced-motion: reduce) {
  .scroll-progress { transition: none; }
}

/* ── Anel circular decorativo (eco do logo) ─────────────────── */
.ring-deco {
  position: absolute;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: 0.14;
  pointer-events: none;
  z-index: 0;
}
.ring-deco--double::after {
  content: '';
  position: absolute;
  inset: 12%;
  border: 1px solid currentColor;
  border-radius: 50%;
}

/* Helpers de coluna no grid (12 col) */
.col-1  { grid-column: span 1; }
.col-2  { grid-column: span 2; }
.col-3  { grid-column: span 3; }
.col-4  { grid-column: span 4; }
.col-5  { grid-column: span 5; }
.col-6  { grid-column: span 6; }
.col-7  { grid-column: span 7; }
.col-8  { grid-column: span 8; }
.col-9  { grid-column: span 9; }
.col-10 { grid-column: span 10; }
.col-11 { grid-column: span 11; }
.col-12 { grid-column: span 12; }

@media (max-width: 768px) {
  .col-1, .col-2, .col-3, .col-4, .col-5, .col-6,
  .col-7, .col-8, .col-9, .col-10, .col-11, .col-12 {
    grid-column: span 12;
  }
}