@import url("fonts.css");

/* ============================================================
   WBF Vidros — Design System
   Register: brand · Lane: claro & arejado · Cor: committed azul-vidro
   ============================================================ */

:root {
  /* --- Cor: paleta azul-vidro derivada do logotipo (OKLCH) --- */
  --brand-900: oklch(0.24 0.088 258);   /* #072351 navy profundo */
  --brand-800: oklch(0.32 0.098 256);   /* #0A3669 */
  --brand-700: oklch(0.43 0.088 246);
  --brand-600: oklch(0.55 0.090 236);   /* #2C759B CTA */
  --brand-500: oklch(0.63 0.090 234);   /* #428EB9 aço */
  --brand-400: oklch(0.68 0.062 244);   /* #6E9EC0 */
  --glass-300: oklch(0.77 0.078 236);   /* #82BDE2 vidro */
  --glass-200: oklch(0.86 0.040 232);   /* #B9D6E2 */
  --glass-100: oklch(0.94 0.020 232);   /* #E3EDF3 tint palíssimo */
  --glass-50:  oklch(0.975 0.008 232);

  --surface:      oklch(0.995 0.002 240);  /* off-white corpo */
  --surface-2:    oklch(0.975 0.006 235);  /* seção alternada */
  --ink:          oklch(0.245 0.038 258);  /* corpo (navy dessat) */
  --ink-soft:     oklch(0.40 0.030 250);   /* secundário */
  --muted:        oklch(0.50 0.022 250);   /* terciário/legendas */
  --line:         oklch(0.90 0.012 235);   /* divisor */
  --line-strong:  oklch(0.83 0.020 235);

  --on-dark:        oklch(0.98 0.006 235);
  --on-dark-soft:   oklch(0.86 0.020 235);
  --on-dark-muted:  oklch(0.72 0.030 235);

  /* --- Tipografia --- */
  --font-display: "Archivo", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;

  /* escala fluida modular (~1.25) */
  --step--1: clamp(0.83rem, 0.79rem + 0.18vw, 0.92rem);
  --step-0:  clamp(1rem, 0.95rem + 0.22vw, 1.125rem);
  --step-1:  clamp(1.2rem, 1.11rem + 0.42vw, 1.5rem);
  --step-2:  clamp(1.44rem, 1.28rem + 0.75vw, 2rem);
  --step-3:  clamp(1.73rem, 1.47rem + 1.25vw, 2.66rem);
  --step-4:  clamp(2.07rem, 1.66rem + 2vw, 3.55rem);
  --step-5:  clamp(2.49rem, 1.83rem + 3.2vw, 4.6rem);

  /* --- Espaço fluido --- */
  --space-2xs: clamp(0.5rem, 0.47rem + 0.15vw, 0.6rem);
  --space-xs:  clamp(0.75rem, 0.7rem + 0.25vw, 0.95rem);
  --space-s:   clamp(1rem, 0.93rem + 0.35vw, 1.25rem);
  --space-m:   clamp(1.5rem, 1.36rem + 0.7vw, 2rem);
  --space-l:   clamp(2.25rem, 1.98rem + 1.35vw, 3.25rem);
  --space-xl:  clamp(3.5rem, 2.9rem + 3vw, 5.75rem);
  --space-2xl: clamp(5rem, 4rem + 5vw, 9rem);

  --container: 76rem;
  --container-narrow: 56rem;
  --gutter: clamp(1.15rem, 0.8rem + 1.75vw, 2.5rem);

  --radius-s: 0.5rem;
  --radius-m: 0.9rem;
  --radius-l: 1.5rem;
  --radius-full: 999px;

  --shadow-s: 0 1px 2px oklch(0.24 0.088 258 / 0.06), 0 2px 8px oklch(0.24 0.088 258 / 0.05);
  --shadow-m: 0 4px 12px oklch(0.24 0.088 258 / 0.08), 0 12px 32px oklch(0.24 0.088 258 / 0.09);
  --shadow-l: 0 12px 28px oklch(0.24 0.088 258 / 0.12), 0 28px 64px oklch(0.24 0.088 258 / 0.14);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);        /* expo-ish */
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --dur-1: 180ms;
  --dur-2: 320ms;
  --dur-3: 520ms;

  /* z-index semântico */
  --z-header: 100;
  --z-float: 200;
  --z-backdrop: 300;
  --z-drawer: 400;
  --z-lightbox: 500;
}

/* ============================================================
   Reset / base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -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;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, picture, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; color: inherit; }
:focus-visible {
  outline: 2.5px solid var(--brand-600);
  outline-offset: 3px;
  border-radius: 3px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--brand-900);
  text-wrap: balance;
}
h1 { font-size: var(--step-5); font-weight: 800; letter-spacing: -0.035em; }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-2); letter-spacing: -0.02em; }
h4 { font-size: var(--step-1); letter-spacing: -0.015em; }
p { text-wrap: pretty; }

/* ============================================================
   Layout utilities
   ============================================================ */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
.container--narrow { max-width: var(--container-narrow); }
.section { padding-block: var(--space-2xl); }
.section--tight { padding-block: var(--space-xl); }
.section--alt { background: var(--surface-2); }
.prose { max-width: 68ch; }
.prose p + p { margin-top: var(--space-s); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.55em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step--1);
  letter-spacing: 0.02em;
  color: var(--brand-600);
}
.eyebrow::before {
  content: ""; width: 1.75rem; height: 2px;
  background: var(--brand-500);
  border-radius: 2px;
}

.section-head { max-width: 44rem; margin-bottom: var(--space-l); }
.section-head p { margin-top: var(--space-xs); color: var(--ink-soft); font-size: var(--step-1); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-bg: var(--brand-600);
  --btn-fg: var(--on-dark);
  display: inline-flex; align-items: center; justify-content: center; gap: 0.6em;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-0);
  line-height: 1;
  padding: 0.95em 1.5em;
  min-height: 3rem;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  background: var(--btn-bg);
  color: var(--btn-fg);
  cursor: pointer;
  transition: transform var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out), background-color var(--dur-1) var(--ease-out);
  will-change: transform;
}
.btn:hover { background: var(--brand-700); transform: translateY(-2px); box-shadow: var(--shadow-m); }
.btn:active { transform: translateY(0); }
.btn svg { width: 1.15em; height: 1.15em; }

.btn--ghost { --btn-bg: transparent; --btn-fg: var(--brand-900); border-color: var(--line-strong); }
.btn--ghost:hover { --btn-bg: var(--glass-100); border-color: var(--brand-400); box-shadow: none; }

.btn--wa { --btn-bg: #1faa53; --btn-fg: #fff; }
.btn--wa:hover { --btn-bg: #178a44; }

.btn--on-dark { --btn-bg: var(--on-dark); --btn-fg: var(--brand-900); }
.btn--on-dark:hover { --btn-bg: var(--glass-100); }

.btn--lg { font-size: var(--step-1); padding: 1.05em 1.9em; min-height: 3.4rem; }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.4em;
  font-family: var(--font-display); font-weight: 600;
  color: var(--brand-600);
}
.link-arrow svg { width: 1.05em; height: 1.05em; transition: transform var(--dur-1) var(--ease-out); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ============================================================
   Header / nav
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  background: oklch(0.995 0.002 240 / 0.82);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-2) var(--ease-out), box-shadow var(--dur-2) var(--ease-out), background-color var(--dur-2) var(--ease-out);
}
.site-header[data-scrolled="true"] {
  border-bottom-color: var(--line);
  box-shadow: 0 1px 20px oklch(0.24 0.088 258 / 0.06);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-m);
  min-height: 8rem;
}
.brand { display: inline-flex; align-items: center; gap: 1rem; }
.brand img { height: 4.7rem; width: auto; }
.brand__word { display: flex; flex-direction: column; line-height: 0.92; }
.brand__word b { font-family: var(--font-display); font-weight: 800; font-size: 2.05rem; letter-spacing: -0.02em; color: var(--brand-900); }
.brand__word span { font-size: 0.86rem; letter-spacing: 0.36em; text-transform: uppercase; color: var(--brand-600); font-weight: 600; margin-top: 0.15rem; }
@media (max-width: 30rem) { .brand img { height: 3.6rem; } .brand__word b { font-size: 1.6rem; } .brand__word span { font-size: 0.72rem; } }

/* Header: logotipo completo do SVG (monógrama + wordmark oficial) */
.brand--logo { gap: 0; }
.brand--logo img { height: 6.2rem; width: auto; }
@media (max-width: 30rem) { .brand--logo img { height: 4.6rem; } }

/* Rodapé: mesmo logotipo, em branco (fundo escuro) e maior */
.footer__brand .brand--logo img { height: 6.6rem; filter: brightness(0) invert(1); }
@media (max-width: 30rem) { .footer__brand .brand--logo img { height: 5.4rem; } }

.nav__links { display: flex; align-items: center; gap: clamp(0.35rem, 1.6vw, 1.6rem); }
.nav__links a {
  font-family: var(--font-display); font-weight: 600; font-size: var(--step-0);
  color: var(--ink-soft); padding: 0.55rem 0.75rem; border-radius: var(--radius-s);
  position: relative; transition: color var(--dur-1) var(--ease-out);
}
.nav__links a:hover { color: var(--brand-900); }
.nav__links a[aria-current="page"] { color: var(--brand-900); }
.nav__links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0.65rem; right: 0.65rem; bottom: 0.15rem; height: 2px;
  background: var(--brand-600); border-radius: 2px;
}
.nav__cta { display: flex; align-items: center; gap: 0.75rem; }

.nav__toggle {
  display: none; width: 2.9rem; height: 2.9rem; border: 1px solid var(--line-strong);
  border-radius: var(--radius-s); background: var(--surface); cursor: pointer;
  align-items: center; justify-content: center;
}
.nav__toggle svg { width: 1.4rem; height: 1.4rem; stroke: var(--brand-900); }
.nav__toggle .icon-close { display: none; }
body.nav-open .nav__toggle .icon-open { display: none; }
body.nav-open .nav__toggle .icon-close { display: block; }

@media (max-width: 60rem) {
  .nav__toggle { display: inline-flex; }
  .nav__drawer {
    position: fixed; inset: 8rem 0 auto 0; z-index: var(--z-drawer);
    background: var(--surface); border-bottom: 1px solid var(--line);
    padding: var(--space-s) var(--gutter) var(--space-l);
    display: flex; flex-direction: column; gap: 0.25rem;
    box-shadow: var(--shadow-l);
    transform: translateY(-8px); opacity: 0; visibility: hidden; pointer-events: none;
    transition: transform var(--dur-2) var(--ease-out), opacity var(--dur-2) var(--ease-out), visibility var(--dur-2);
  }
  body.nav-open .nav__drawer { transform: translateY(0); opacity: 1; visibility: visible; pointer-events: auto; }
  .nav__drawer .nav__links { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__drawer .nav__links a { padding: 0.95rem 0.5rem; font-size: var(--step-1); border-bottom: 1px solid var(--line); }
  .nav__drawer .nav__links a[aria-current="page"]::after { display: none; }
  .nav__drawer .nav__cta { margin-top: var(--space-s); flex-direction: column; align-items: stretch; }
  .nav__drawer .btn { width: 100%; }
  .nav > .nav__links, .nav > .nav__cta { display: none; }
}
@media (min-width: 60.01rem) { .nav__drawer { display: contents; } }

/* ============================================================
   WhatsApp float
   ============================================================ */
.wa-float {
  position: fixed; right: clamp(1rem, 3vw, 1.75rem); bottom: clamp(1rem, 3vw, 1.75rem);
  z-index: var(--z-float);
  display: inline-flex; align-items: center; gap: 0.65rem;
  background: #1faa53; color: #fff;
  font-family: var(--font-display); font-weight: 600; font-size: var(--step--1);
  padding: 0.85rem 1.15rem; border-radius: var(--radius-full);
  box-shadow: 0 8px 24px oklch(0.5 0.15 150 / 0.35);
  transition: transform var(--dur-1) var(--ease-out), box-shadow var(--dur-1) var(--ease-out);
}
.wa-float:hover { transform: translateY(-3px) scale(1.02); box-shadow: 0 12px 30px oklch(0.5 0.15 150 / 0.45); }
.wa-float svg { width: 1.5rem; height: 1.5rem; }
.wa-float__label { white-space: nowrap; }
@media (max-width: 34rem) {
  .wa-float__label { display: none; }
  .wa-float { padding: 0.95rem; }
}

/* ============================================================
   Footer
   ============================================================ */
.site-footer { background: var(--brand-900); color: var(--on-dark-soft); padding-block: var(--space-xl) var(--space-l); }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--space-l); }
.footer__brand .brand__word b { color: #fff; }
.footer__brand .brand__word span { color: var(--glass-300); }
.footer__brand p { margin-top: var(--space-s); color: var(--on-dark-muted); max-width: 34ch; }
.site-footer h4 { color: #fff; font-size: var(--step-0); margin-bottom: var(--space-s); }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.site-footer a { color: var(--on-dark-soft); transition: color var(--dur-1) var(--ease-out); }
.site-footer a:hover { color: #fff; }
.footer__meta { display: flex; align-items: flex-start; gap: 0.6rem; color: var(--on-dark-muted); font-size: var(--step--1); }
.footer__meta svg { width: 1.15rem; height: 1.15rem; margin-top: 0.15rem; flex: none; color: var(--glass-300); }
.footer__bottom { margin-top: var(--space-xl); padding-top: var(--space-m); border-top: 1px solid oklch(1 0 0 / 0.1); display: flex; flex-wrap: wrap; gap: var(--space-s); justify-content: space-between; align-items: center; color: var(--on-dark-muted); font-size: var(--step--1); }
@media (max-width: 48rem) { .footer__grid { grid-template-columns: 1fr; gap: var(--space-m); } }

/* ============================================================
   Reveal on scroll (enhances already-visible content)
   ============================================================ */
/* Reveal só esconde quando JS está ativo (html.js) E sem reduced-motion.
   Sem JS ou com reduced-motion o conteúdo já aparece visível por padrão. */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity var(--dur-3) var(--ease-out), transform var(--dur-3) var(--ease-out); }
  html.js .reveal.is-in { opacity: 1; transform: none; }
  html.js .reveal[data-delay="1"] { transition-delay: 80ms; }
  html.js .reveal[data-delay="2"] { transition-delay: 160ms; }
  html.js .reveal[data-delay="3"] { transition-delay: 240ms; }
}

/* skip link */
.skip-link {
  position: fixed; left: 0.75rem; top: 0.75rem; z-index: var(--z-lightbox);
  background: var(--brand-900); color: #fff; padding: 0.7rem 1.1rem; border-radius: var(--radius-s);
  transform: translateY(-150%); transition: transform var(--dur-1) var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }