/* ==========================================================================
   MIZ — identidade: minimalista, editorial, silenciosa.
   ========================================================================== */

:root {
  --white: #ffffff;
  --cream-50: #f7f6f3;
  --cream-100: #eeece7;
  --cream-200: #e6e3db;
  --sand-300: #d1ccc7;
  --sand-400: #beb8b1;
  --taupe-500: #aba49b;
  --taupe-600: #999085;
  --taupe-700: #7a7266;
  --brown-800: #645d54;
  --brown-900: #4e4841;
  --ink-800: #38332e;
  --ink-900: #221f1c;
  --black: #000000;

  --bg: var(--cream-50);
  --text-body: var(--ink-800);
  --text-signature: var(--taupe-700);
  --button-bg: var(--ink-900);
  --button-bg-hover: var(--ink-800);
  --button-text: var(--cream-50);

  --font-sans: "Quicksand", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;

  --space-2xs: clamp(12px, 2vw, 16px);
  --space-xs: clamp(20px, 3vw, 28px);

  /* Respiro entre os quatro blocos principais da composição. */
  --gap-logo-cta: clamp(56px, 9vh, 104px);
  --gap-cta-text: clamp(72px, 13vh, 128px);
  --gap-text-signature: clamp(48px, 8vh, 96px);

  color-scheme: light;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--bg);
  color: var(--text-body);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  position: relative;
  isolation: isolate;
}

/* Textura extremamente sutil — grão editorial, quase subliminar. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.025;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* Leve gradiente para dar profundidade discreta ao fundo. */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, var(--white) 0%, transparent 60%),
    radial-gradient(ellipse 90% 70% at 50% 100%, var(--cream-100) 0%, transparent 65%),
    var(--bg);
}

.page {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: clamp(32px, 5vh, 50px) 24px clamp(64px, 10vh, 96px);
  text-align: center;
}

/* ---------------------------------- Logo --------------------------------- */
/* Discreta: assina a marca sem competir com o CTA. Fica próxima do topo,
   mas com respiro — a página flui naturalmente (sem centralizar tudo). */

.logo {
  width: clamp(58px, 5.5vw, 78px);
  height: auto;
  display: block;
  margin: 0 0 var(--gap-logo-cta);
}

/* ------------------------------- Botão CTA -------------------------------- */

.cta-button {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 var(--gap-cta-text);
  padding: 17px clamp(34px, 6vw, 48px);
  border-radius: 6px;
  background-color: var(--button-bg);
  color: var(--button-text);
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(15px, 1.4vw, 17px);
  letter-spacing: 0.03em;
  text-decoration: none;
  white-space: nowrap;
  box-shadow: 0 2px 12px rgba(34, 31, 28, 0.14);
  transition: transform 300ms ease, box-shadow 300ms ease, background-color 300ms ease;
  animation: breathe 4.5s ease-in-out infinite;
}

.cta-button::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    115deg,
    transparent 30%,
    rgba(255, 255, 255, 0.09) 47%,
    rgba(255, 255, 255, 0.16) 50%,
    rgba(255, 255, 255, 0.09) 53%,
    transparent 70%
  );
  background-size: 260% 100%;
  background-position: 200% 0;
  animation: sweep 5s ease-in-out infinite;
  pointer-events: none;
}

.cta-button:hover,
.cta-button:focus-visible {
  background-color: var(--button-bg-hover);
  transform: translateY(-2px) scale(1.015);
  box-shadow: 0 10px 24px rgba(34, 31, 28, 0.2);
  animation-play-state: paused;
}

.cta-button:focus-visible {
  outline: 2px solid var(--taupe-600);
  outline-offset: 4px;
}

.cta-button:active {
  transform: translateY(0) scale(1);
  box-shadow: 0 2px 10px rgba(34, 31, 28, 0.16);
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
    box-shadow: 0 2px 12px rgba(34, 31, 28, 0.14);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(34, 31, 28, 0.18);
  }
}

@keyframes sweep {
  0% {
    background-position: 220% 0;
  }
  55% {
    background-position: -60% 0;
  }
  100% {
    background-position: -60% 0;
  }
}

/* ---------------------------- Texto institucional ------------------------- */

.manifesto {
  max-width: 540px;
  margin: 0 0 var(--gap-text-signature);
  text-align: left;
}

.manifesto p {
  margin: 0 0 1.4em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-body);
  font-weight: 400;
}

.manifesto p:last-child {
  margin-bottom: 0;
}

.manifesto .lede {
  font-weight: 500;
  color: var(--ink-900);
  letter-spacing: 0.01em;
}

@media (max-width: 480px) {
  .manifesto p {
    font-size: 14px;
  }
}

/* -------------------------------- Assinatura ------------------------------ */

.signature {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(16px, 1.8vw, 20px);
  letter-spacing: 0.06em;
  color: var(--text-signature);
  line-height: 1.5;
}

/* --------------------------------- Entrada -------------------------------- */

.logo,
.cta-button,
.manifesto,
.signature {
  opacity: 0;
  transform: translateY(10px);
  animation-name: fadeUp;
  animation-duration: 800ms;
  animation-timing-function: ease-out;
  animation-fill-mode: forwards;
}

.logo {
  animation-delay: 60ms;
}

.manifesto {
  animation-delay: 340ms;
}

.signature {
  animation-delay: 480ms;
}

/* O botão soma a entrada (fadeUp) à respiração contínua (breathe),
   que só começa depois que a entrada termina. */
.cta-button {
  animation-name: fadeUp, breathe;
  animation-duration: 800ms, 4.5s;
  animation-timing-function: ease-out, ease-in-out;
  animation-delay: 200ms, 1000ms;
  animation-iteration-count: 1, infinite;
  animation-fill-mode: forwards, none;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ------------------------------ Acessibilidade ----------------------------- */

@media (prefers-reduced-motion: reduce) {
  .logo,
  .cta-button,
  .manifesto,
  .signature {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .cta-button::before {
    display: none;
  }

  .cta-button:hover,
  .cta-button:focus-visible {
    transform: none;
  }
}