/* ============================================================
   3TN Osasco — Tokens "Registro & Tinta"
   Consolidado do design system (docs/design-system/tokens/*).
   Fontes carregadas via <link> no <head> (Spectral, Libre Franklin, Montserrat).
   ============================================================ */
:root {
  /* --- Brand blue (primary) — rampa com hue-shift --- */
  --blue-50:  #EAF1F9;
  --blue-100: #D2E2F1;
  --blue-200: #A6C6E6;
  --blue-300: #6C9BD3;
  --blue-400: #2F72BE;
  --blue-500: #0D4A9A; /* PRIMARY — azul institucional */
  --blue-600: #0B3E86;
  --blue-700: #0B3168;
  --blue-800: #0A2650;
  --blue-900: #081C3C;
  --ink-blue: #0A2E63; /* azul-tinta — grandes áreas, cabeçalhos, footer */

  /* --- Accent: ouro-gravação (selo/filete) — NUNCA em botão --- */
  --gold-50:  #F5EEDD;
  --gold-500: #C9A24B;
  --gold-600: #B0894B;
  --gold-700: #96733B;

  /* --- WhatsApp green (uso restrito) --- */
  --green-whatsapp:      #25D366;
  --green-whatsapp-dark: #1EB958;
  --green-whatsapp-50:   #E9FBF0;

  /* --- Neutros FRIOS (papel frio, leve azul da marca) --- */
  --white:    #FFFFFF;
  --gray-50:  #FBFCFE; /* quase-branco frio — superfície de card */
  --gray-100: #F4F6FB; /* papel frio — fundo de página */
  --gray-200: #E6EAF2; /* cinza-azulado claro — divisores */
  --gray-300: #D3DAE6; /* borda default */
  --gray-400: #AEB7C6; /* muted claro / disabled */
  --gray-500: #7A8393; /* borda interativa / muted (>=3:1) */
  --gray-600: #565E6C; /* texto secundário */
  --gray-700: #323843; /* texto corpo */
  --gray-800: #232833;
  --gray-900: #14181F; /* tinta quase-preta */

  /* --- Semânticos --- */
  --success-500: #1E7D4E; --success-50: #E4F1E9;
  --warning-500: #A85D00; --warning-50: #F7ECDD;
  --danger-500:  #BC2E2E; --danger-50:  #F8E7E7;
  --info-500:    var(--blue-500); --info-50: var(--blue-50);

  /* --- Aliases semânticos --- */
  --color-primary:        var(--blue-500);
  --color-primary-hover:  var(--blue-600);
  --color-primary-active: var(--blue-700);
  --color-navy:           var(--ink-blue);
  --color-navy-deep:      var(--blue-800);
  --color-accent:         var(--green-whatsapp);
  --color-accent-hover:   var(--green-whatsapp-dark);
  /* Acento de assinatura — agora MONO AZUL (antes ouro). */
  --color-seal:           var(--color-primary); /* filete/ícones em seções claras */
  --color-seal-strong:    var(--blue-200);      /* acento claro sobre navy (eyebrow/selo) */
  --color-seal-tint:      var(--blue-50);

  /* Surfaces */
  --surface-page:      var(--gray-100);
  --surface-card:      var(--gray-50);
  --surface-raised:    var(--white);
  --surface-tint:      var(--blue-50);
  --surface-band:      var(--gray-200);
  --surface-navy:      var(--ink-blue);
  --surface-navy-deep: var(--blue-800);

  /* Text */
  --text-strong:        var(--gray-900);
  --text-body:          var(--gray-700);
  --text-secondary:     var(--gray-600);
  --text-muted:         var(--gray-500);
  --text-on-navy:       var(--white);
  --text-on-navy-muted: rgba(255, 255, 255, 0.78);
  --text-on-seal:       var(--gray-900);
  --text-link:          var(--blue-500);

  /* Borders */
  --border-subtle:  var(--gray-200);
  --border-default: var(--gray-300);
  --border-strong:  var(--gray-500);
  --border-focus:   var(--blue-500);
  --border-on-navy: rgba(255, 255, 255, 0.24);
  --ring-focus: 0 0 0 3px rgba(13, 74, 154, 0.35);

  /* Tipografia */
  --font-display: 'Spectral', Georgia, 'Times New Roman', serif;
  --font-body:    'Libre Franklin', 'Segoe UI', system-ui, sans-serif;
  --font-brand:   'Montserrat', 'Segoe UI', system-ui, sans-serif;
  --fw-regular: 400; --fw-medium: 500; --fw-semibold: 600; --fw-bold: 700; --fw-extra: 800;
  --fs-display: 3.25rem; --fs-h1: 2.5rem; --fs-h2: 2rem; --fs-h3: 1.5rem; --fs-h4: 1.25rem;
  --fs-lead: 1.25rem; --fs-body: 1.125rem; --fs-sm: 1rem; --fs-xs: 0.8125rem;
  --lh-tight: 1.14; --lh-snug: 1.3; --lh-normal: 1.55; --lh-relaxed: 1.65;
  --ls-heading: -0.01em; --ls-tight: -0.01em; --ls-normal: 0; --ls-wide: 0.04em; --ls-caps: 0.08em;
  --measure: 66ch;

  /* Espaçamento */
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --container-max: 1200px;
  --container-pad: 1.5rem;
  --section-pad:         clamp(3rem, 6vw, 6rem);
  --section-pad-compact: clamp(2rem, 4vw, 3.5rem);
  --section-pad-ample:   clamp(4rem, 9vw, 8rem);

  /* Raios / sombras / motion */
  --radius-xs: 2px; --radius-sm: 4px; --radius-md: 6px; --radius-lg: 8px;
  --radius-xl: 10px; --radius-2xl: 12px; --radius-pill: 999px;
  --shadow-xs: 0 1px 1px rgba(20, 24, 31, 0.04);
  --shadow-sm: 0 1px 2px rgba(20, 24, 31, 0.05), 0 1px 1px rgba(20, 24, 31, 0.04);
  --shadow-md: 0 2px 4px rgba(20, 24, 31, 0.06), 0 1px 2px rgba(20, 24, 31, 0.05);
  --shadow-lg: 0 6px 14px rgba(20, 24, 31, 0.08), 0 2px 4px rgba(20, 24, 31, 0.05);
  --shadow-xl: 0 12px 28px rgba(20, 24, 31, 0.10), 0 4px 8px rgba(20, 24, 31, 0.06);
  --card-shadow: var(--shadow-sm);
  --card-shadow-hover: var(--shadow-md);
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 140ms; --dur-normal: 220ms; --dur-slow: 360ms;
}

/* ============================================================
   Base reset & element defaults
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--text-body);
  background: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  color: var(--text-strong);
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-heading);
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }
a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
button { font-family: inherit; }

:focus-visible { outline: 3px solid var(--border-focus); outline-offset: 2px; }
:focus:not(:focus-visible) { outline: none; }

/* Eyebrow / rótulo caps */
.eyebrow {
  font-family: var(--font-body);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-caps);
  text-transform: uppercase;
  color: var(--color-primary);
}

/* Numerais OpenType */
.num-oldstyle { font-feature-settings: "onum" 1; }
.num-tabular  { font-feature-settings: "lnum" 1, "tnum" 1; }
.measure { max-width: var(--measure); }

/* ===== Responsivo ===== */
.tn-grid { display: grid; grid-template-columns: var(--cols, 1fr); }
@media (max-width: 900px) { .tn-grid { grid-template-columns: var(--cols-md, 1fr); } }
@media (max-width: 560px) { .tn-grid { grid-template-columns: 1fr; } }

.tn-nav-desktop { display: flex; align-items: center; gap: 0.25rem; }
.tn-hamburger { display: none; }
.tn-mobile-nav { display: none; }
@media (max-width: 900px) {
  .tn-nav-desktop { display: none; }
  .tn-hamburger { display: inline-flex; }
  .tn-mobile-nav.is-open { display: block; }
}

/* ===== Signature ===== */
.guilloche-wm {
  -webkit-mask: url("../assets/guilloche-rosette.svg") center / contain no-repeat;
  mask: url("../assets/guilloche-rosette.svg") center / contain no-repeat;
  background-color: currentColor;
  pointer-events: none;
}
.seal-mark {
  -webkit-mask: url("../assets/3tn-seal.svg") center / contain no-repeat;
  mask: url("../assets/3tn-seal.svg") center / contain no-repeat;
  background-color: currentColor;
  pointer-events: none;
}
.rule-engraving {
  border: 0; height: 1px; background: var(--border-default);
  position: relative; overflow: visible;
}
.rule-engraving::after {
  content: ""; position: absolute; left: 0; top: 50%;
  width: 2.25rem; height: 2px; transform: translateY(-50%);
  background: var(--color-seal);
}

@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;
  }
}
