/* ==========================================================================
   Dare2Change · coming soon (opção 04 "Relevo")
   Tokens da marca no topo: são os mesmos que passam para o site completo.
   ========================================================================== */

@property --light {
  syntax: "<number>";
  inherits: false;
  initial-value: 1;
}

/* direção da luz sobre o relevo (vetor unitário; por defeito vem de cima à esquerda) */
@property --lx {
  syntax: "<number>";
  inherits: false;
  initial-value: -0.707;
}
@property --ly {
  syntax: "<number>";
  inherits: false;
  initial-value: -0.707;
}

:root {
  /* base */
  --grafite: #232323;
  --carvao: #1A1A1A;
  --relevo-bg: #262626;
  --fantasma: #3A3A3A;
  --fantasma-suave: #2F2F2F;
  --cinza-medio: #8C8C8C;
  --cinza-claro: #C9C9C7;
  --branco: #F5F5F3;
  --coral: #EF8172;
  --cobre: #9A4E43;
  --bordo: #3A2522;
  --linha: #3A3A3A;
  --campo-linha: #5A5A5A;
  --construcao: rgba(239, 129, 114, 0.4);

  /* semânticos */
  --surface: var(--grafite);
  --surface-deep: var(--carvao);
  --ink: var(--branco);
  --ink-muted: var(--cinza-claro);
  --ink-subtle: var(--cinza-medio);
  --accent: var(--coral);
  --on-accent: var(--grafite);
  --focus: var(--coral);

  /* gradientes (levam sempre grão por cima) */
  --grad-horizonte: linear-gradient(180deg, #1F1F1F 0%, #1F1F1F 42%, #3A2522 64%, #9A4E43 84%, #EF8172 100%);
  --grad-canto: radial-gradient(circle at 100% 0%, #EF8172 0%, rgba(239,129,114,.55) 22%, rgba(239,129,114,.12) 48%, rgba(35,35,35,0) 70%), #232323;

  /* tipografia */
  --font-display: "Faculty Glyphic", "Times New Roman", serif;
  --font-text: "Special Gothic", "Helvetica Neue", Arial, sans-serif;

  /* grão */
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  --grain-flat: 0.16;
  --grain-gradient: 0.28;

  /* movimento */
  --ease-mask: cubic-bezier(0.2, 0.7, 0.1, 1);

  /* layout (mobile primeiro) */
  --edge: clamp(24px, 3.334vw, 96px);
  --ghost-size: min(30vw, max(20vw, calc(56px + 15.6vw)), 40svh);
  --emblem-h: clamp(150px, 26svh, 260px);
}

/* ---------- base ---------- */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--relevo-bg);
  color: var(--ink);
  font-family: var(--font-text);
  font-weight: 400;
  line-height: 1.12;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* grão fixo por cima de tudo */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 10;
  background-image: var(--grain);
  background-size: 240px 240px;
  opacity: var(--grain-flat);
  mix-blend-mode: overlay;
  pointer-events: none;
}

p, h1 { margin: 0; font: inherit; }

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

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

/* ---------- página ---------- */

.page {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding:
    max(var(--edge), env(safe-area-inset-top))
    max(var(--edge), env(safe-area-inset-right))
    max(var(--edge), env(safe-area-inset-bottom))
    max(var(--edge), env(safe-area-inset-left));
  overflow: clip;
  text-transform: uppercase;
}

/* ---------- palavras fantasma ---------- */

.ghosts {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: clip;
  pointer-events: none;
  user-select: none;
}

.ghost {
  position: absolute;
  left: 50%;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--ghost-size);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fantasma-suave);
  white-space: nowrap;
  transform: translateX(-50%);
  animation: drift 50s ease-in-out infinite alternate;
}

/* entrada: a palavra de cima desce, a de baixo sobe */
.ghost > span {
  display: inline-block;
  animation: ghost-in-top 1800ms var(--ease-mask) both;
}
.ghost--bottom > span { animation-name: ghost-in-bottom; }

@keyframes ghost-in-top {
  from { opacity: 0; transform: translateY(-0.45em); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes ghost-in-bottom {
  from { opacity: 0; transform: translateY(0.45em); }
  to   { opacity: 1; transform: translateY(0); }
}

/* o corte é em em: corta sempre a mesma fração da letra, seja qual for o ecrã */
.ghost--top { top: -0.36em; }
.ghost--bottom {
  bottom: -0.4em;
  animation-direction: alternate-reverse;
}

@keyframes drift {
  from { translate: -2.5% 0; }
  to   { translate: 2.5% 0; }
}

/* ---------- cantos ---------- */

.corners {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  font-size: clamp(11px, 2.9vw, 14px);
  letter-spacing: 0.02em;
  color: var(--ink-subtle);
}

.corner--light { color: var(--ink-muted); }

/* ---------- palco central (mobile) ---------- */

.stage {
  display: grid;
  grid-template-areas:
    "status"
    "emblem"
    "cta"
    "contact";
  justify-items: center;
  align-content: center;
  text-align: center;
  padding-block: clamp(32px, 6svh, 72px);
  row-gap: clamp(28px, 4.5svh, 48px);
}

.side--status {
  grid-area: status;
  font-size: clamp(13px, 3.4vw, 18px);
  letter-spacing: 0.02em;
  color: var(--accent);
}

.side--contact {
  grid-area: contact;
  margin-top: calc(-1 * clamp(14px, 2.5svh, 28px));
  font-size: clamp(12px, 3.1vw, 15px);
  letter-spacing: 0.02em;
  color: var(--ink-subtle);
}

/* ---------- emblema em relevo ---------- */

/* luz e sombra escalam com o emblema; --light anima de 0 a 1 ao carregar */
.emblem {
  grid-area: emblem;
  display: block;
  height: var(--emblem-h);
  width: auto;
  /* o brilho fica do lado da luz (--lx, --ly), a sombra do lado oposto.
     Com a luz por defeito dá exatamente o filtro de referência do BRAND.md. */
  filter:
    brightness(0.165)
    drop-shadow(
      calc(var(--emblem-h) * 0.0059 * var(--lx) * var(--light))
      calc(var(--emblem-h) * 0.0059 * var(--ly) * var(--light))
      0
      rgb(255 255 255 / calc(0.10 * var(--light))))
    drop-shadow(
      calc(var(--emblem-h) * -0.0079 * var(--lx) * var(--light))
      calc(var(--emblem-h) * -0.0117 * var(--ly) * var(--light))
      calc(var(--emblem-h) * 0.0083)
      rgb(0 0 0 / calc(0.6 * var(--light))));
  /* inclinação ligeira, controlada pelo main.js */
  transform: perspective(1200px) rotateX(calc(var(--tx, 0) * 1deg)) rotateY(calc(var(--ty, 0) * 1deg));
  animation: light 1100ms ease-out 150ms both, emblem-in 1400ms var(--ease-mask) both;
}

@keyframes emblem-in {
  from { opacity: 0; scale: 0.96; }
  to   { opacity: 1; scale: 1; }
}

@keyframes light {
  from { --light: 0; }
  to   { --light: 1; }
}

/* ---------- frase e formulário ---------- */

.cta {
  grid-area: cta;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(16px, 2.4svh, 24px);
}

.tagline {
  font-size: clamp(15px, 3.85vw, 22px);
  letter-spacing: 0.02em;
  color: var(--ink);
}

/* entrada por máscara: a linha sobe da linha de base (atraso em --d) */
.mask {
  display: inline-block;
  overflow: clip;
  padding-block: 0.14em;
  margin-block: -0.14em;
  vertical-align: bottom;
}
.mask > span {
  display: inline-block;
  animation: rise 650ms var(--ease-mask) both;
  animation-delay: var(--d, 0ms);
}
.rise { display: block; }

@keyframes rise {
  /* 160%: os acentos (Á, É, Ã) ficam acima das maiúsculas e não podem
     espreitar pela folga de baixo da máscara antes do reveal */
  from { transform: translateY(160%); }
  to   { transform: translateY(0); }
}

.signup,
.button--link {
  animation: fade-up 700ms var(--ease-mask) 1250ms both;
}
.signup {
  width: 100%;
  max-width: 520px;
}

.signup__row {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.field {
  width: 100%;
  height: 50px;
  padding: 0 17px;
  background: var(--surface-deep);
  border: 1px solid var(--campo-linha);
  border-radius: 2px;
  color: var(--ink);
  font-family: var(--font-text);
  font-size: 16px; /* 16px no mobile evita o zoom automático do iOS */
  text-transform: none;
  -webkit-appearance: none;
  appearance: none;
}
.field::placeholder { color: var(--ink-subtle); opacity: 1; }
.field { transition: border-color 200ms ease; }
.field:focus { border-color: var(--focus); }
.field:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.field[aria-invalid="true"] { border-color: var(--ink); }

.button {
  height: 50px;
  padding: 0 25px;
  border: 0;
  border-radius: 0;
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-text);
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
/* hover: o branco enche o botão de baixo para cima */
.button::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--branco);
  transform: scaleY(0);
  transform-origin: 50% 100%;
  transition: transform 450ms var(--ease-mask);
}
.button:hover::before,
.button:focus-visible::before { transform: scaleY(1); }
.button__label { position: relative; }
.button--link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}
.button--link:hover { text-decoration: none; }
.button:disabled { cursor: progress; background: var(--cinza-claro); }
.button:disabled::before { transform: scaleY(0); }

.signup__note {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.4;
  text-transform: none;
  color: var(--ink-subtle);
}

.signup__msg {
  min-height: 1.4em;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.4;
  text-transform: none;
  color: var(--ink);
}
.signup__msg:empty { margin-top: 0; min-height: 0; }
.signup__msg a { text-decoration: underline; text-underline-offset: 0.18em; }

.signup__done {
  font-size: clamp(15px, 3.85vw, 22px);
  line-height: 1.3;
  text-transform: none;
  color: var(--ink);
  animation: fade-up 500ms var(--ease-mask) both;
}
.signup__done:focus { outline: none; }

/* armadilha para bots */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

@keyframes fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   Desktop: a partir de 960px. Tudo escala a partir do desenho de 1920×1080
   pelo menor dos dois rácios (largura ou altura), para caber sem scroll.
   ========================================================================== */

@media (min-width: 960px) and (min-height: 560px) {
  :root {
    --s: min(calc(100vw / 1920), calc(100svh / 1080));
    --emblem-h: calc(360 * var(--s));
  }

  .corners {
    font-size: max(14px, calc(22 * var(--s)));
    letter-spacing: 0;
  }
  .corners--top { margin-top: calc(-8 * var(--s)); }
  .corners--bottom { margin-bottom: calc(-12 * var(--s)); }

  .stage {
    grid-template-columns: 1fr auto 1fr;
    grid-template-areas:
      "status emblem contact"
      "cta    cta    cta";
    align-items: start;
    padding-block: calc(50 * var(--s)) 0;
    row-gap: calc(60 * var(--s));
  }

  .side {
    width: 100%;
    max-width: calc(440 * var(--s) + 96 * var(--s));
    margin-top: calc(-38 * var(--s));
    font-size: max(15px, calc(28 * var(--s)));
    letter-spacing: 0;
  }
  .side__line { display: block; }
  .side__sep { display: none; }

  /* os blocos laterais ficam ligeiramente afastados do emblema, como na referência */
  .side--status {
    justify-self: center;
    padding-right: calc(96 * var(--s));
  }
  .side--contact {
    justify-self: center;
    padding-left: calc(96 * var(--s));
    color: var(--ink);
  }

  .cta { gap: calc(22 * var(--s)); }

  .tagline {
    font-size: max(15px, calc(28 * var(--s)));
    letter-spacing: 0;
  }
  .rise { display: inline-block; }

  .signup { max-width: none; width: auto; }

  .signup__row {
    flex-direction: row;
    gap: 0;
  }

  .field {
    width: max(300px, calc(440 * var(--s)));
    height: max(48px, calc(60 * var(--s)));
    padding: 0 max(16px, calc(21 * var(--s)));
    font-size: max(15px, calc(18 * var(--s)));
  }

  .button {
    height: max(48px, calc(60 * var(--s)));
    padding: 0 max(22px, calc(30 * var(--s)));
    font-size: max(13px, calc(16 * var(--s)));
  }

  .signup__note {
    max-width: max(300px, calc(590 * var(--s)));
    margin: calc(14 * var(--s)) auto 0;
    font-size: max(12px, calc(15 * var(--s)));
  }

  .signup__msg {
    position: absolute;
    left: 0;
    right: 0;
    margin-top: calc(14 * var(--s));
    font-size: max(13px, calc(17 * var(--s)));
  }
  .signup { position: relative; }

  .signup__done { font-size: max(15px, calc(24 * var(--s))); }
}

/* ==========================================================================
   Movimento reduzido: tudo parado, só fade de opacidade
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .ghost { animation: none; }
  .ghost > span { animation: fade 800ms ease-out both; }
  .emblem { animation: fade 600ms ease-out both; transform: none; }
  .mask > span,
  .signup,
  .button--link,
  .signup__done { animation-name: fade; }
  .mask > span { animation-duration: 600ms; animation-delay: 300ms; }
  .signup,
  .button--link { animation-delay: 400ms; }
  .button::before { transition: none; }
}