/* =========================================================
   PARA A MAMÃE — da Luluca
   Carta digital · Dia das Mães 2026
   Paleta: creme, terracota, dourado-poente
   ========================================================= */

:root {
  --bg: #f6efe6; /* creme suave */
  --bg-deep: #ebdfd0; /* creme com sombra */
  --ink: #3a2418; /* marrom-café muito escuro */
  --ink-soft: #6b4a37; /* marrom médio */
  --terracota: #c4623f; /* terracota quente */
  --gold: #b8893d; /* dourado-poente */
  --rose: #d99c8a; /* rosa empoeirado */
  --paper: rgba(255, 250, 244, 0.92);

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", system-ui, sans-serif;

  --transition-slow: 1.6s cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition-mid: 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===================== TELAS ===================== */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.screen.active {
  opacity: 1;
  pointer-events: auto;
}

/* ===================== INTRO ===================== */
.screen--intro {
  background: radial-gradient(
    ellipse at 50% 30%,
    #fbf3e7 0%,
    var(--bg) 55%,
    var(--bg-deep) 100%
  );
}
.intro__inner {
  text-align: center;
  max-width: 640px;
  padding: 0 32px;
  z-index: 2;
  animation: fadeInUp 1.4s ease-out;
}
.intro__eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--terracota);
  margin-bottom: 32px;
  font-weight: 500;
}
.intro__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 36px;
}
.intro__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--terracota);
  font-variation-settings: "opsz" 144;
}
.intro__sub {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(16px, 2.4vw, 20px);
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 56px;
}
.intro__btn {
  background: var(--ink);
  color: var(--bg);
  border: none;
  padding: 18px 44px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  transition: all 0.4s ease;
  box-shadow: 0 4px 24px rgba(58, 36, 24, 0.12);
}
.intro__btn:hover {
  background: var(--terracota);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(196, 98, 63, 0.3);
}
.intro__btn-arrow {
  font-size: 16px;
  transition: transform 0.4s ease;
}
.intro__btn:hover .intro__btn-arrow {
  transform: translateY(3px);
}

/* Granulado sutil */
.intro__noise {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.4;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.6 0 0 0 0 0.45 0 0 0 0 0.3 0 0 0 0.08 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===================== CARTA ===================== */
.screen--letter {
  background: var(--ink);
  color: var(--bg);
}

/* Fundo de fotos */
.photo-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.photo {
  position: absolute;
  inset: 0;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  background-color: var(--ink);
  opacity: 0;
  transition:
    opacity 2.4s ease-in-out,
    transform 24s ease-out;
  filter: contrast(1.05) saturate(0.92);
}

@media (max-width: 768px) {
  .photo {
    background-size: contain;
  }
}
.photo.active {
  opacity: 0.55;
  transform: scale(1.08);
}
.photo--1 {
  background-image: url("photos/1.jpg");
}
.photo--2 {
  background-image: url("photos/2.jpg");
}
.photo--3 {
  background-image: url("photos/3.jpg");
}
.photo--4 {
  background-image: url("photos/4.jpg");
}
.photo--5 {
  background-image: url("photos/5.jpg");
}
.photo--6 {
  background-image: url("photos/6.jpg");
}
.photo--7 {
  background-image: url("photos/7.jpg");
}
.photo--8 {
  background-image: url("photos/8.jpg");
}

.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(58, 36, 24, 0.55) 0%,
    rgba(58, 36, 24, 0.35) 50%,
    rgba(58, 36, 24, 0.7) 100%
  );
  pointer-events: none;
}

/* Stage do texto */
.letter__stage {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 720px;
  padding: 0 32px;
  text-align: center;
}

.line {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: calc(100% - 64px);
  max-width: 720px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: #fbf3e7;
  opacity: 0;
  transition:
    opacity 1.2s ease,
    transform 1.2s ease;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}
.line.active {
  opacity: 1;
  transform: translate(-50%, -50%) translateY(0);
  animation: gentleFloat 6s ease-in-out infinite alternate;
}
.line.exiting {
  opacity: 0;
  transform: translate(-50%, -50%) translateY(-12px);
}

.line--soft {
  font-style: italic;
  color: var(--rose);
  font-size: clamp(20px, 3.4vw, 30px);
}
.line--strong {
  font-weight: 400;
  color: #ffd9b8;
  font-size: clamp(26px, 4.4vw, 42px);
}
.line--pause {
  color: var(--gold);
  letter-spacing: 1em;
  font-size: clamp(18px, 2vw, 24px);
}
.line--final {
  font-style: italic;
}
.line--big {
  font-size: clamp(32px, 5.4vw, 52px);
  font-weight: 400;
  color: #ffd9b8;
  font-style: normal;
}
.line--sig {
  margin-top: 60px;
}
.sig {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: 1.4em;
  color: var(--terracota);
  display: inline-block;
  margin-top: 16px;
}

@keyframes gentleFloat {
  from {
    transform: translate(-50%, -50%) translateY(0);
  }
  to {
    transform: translate(-50%, -50%) translateY(-4px);
  }
}

/* ===================== CONTROLES ===================== */
.controls {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255, 250, 244, 0.08);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 250, 244, 0.12);
  padding: 10px 18px;
  border-radius: 999px;
  z-index: 10;
  opacity: 0.5;
  transition: opacity 0.4s ease;
}
.controls:hover {
  opacity: 1;
}
.ctrl--play {
  background: transparent;
  border: none;
  color: #fbf3e7;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}
.ctrl__progress {
  width: 160px;
  height: 2px;
  background: rgba(255, 250, 244, 0.2);
  border-radius: 2px;
  overflow: hidden;
}
.ctrl__progress-bar {
  height: 100%;
  background: var(--terracota);
  width: 0%;
  transition: width 0.2s linear;
}

/* ===================== OUTRO ===================== */
.screen--outro {
  background: radial-gradient(
    ellipse at 50% 50%,
    var(--bg) 0%,
    var(--bg-deep) 100%
  );
}
.outro__inner {
  text-align: center;
  padding: 0 32px;
  max-width: 520px;
}
.outro__heart {
  font-size: 48px;
  color: var(--terracota);
  margin-bottom: 32px;
  animation: heartbeat 2s ease-in-out infinite;
}
@keyframes heartbeat {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}
.outro__text {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(18px, 2.6vw, 22px);
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 48px;
}
.outro__btn {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink);
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  cursor: pointer;
  border-radius: 999px;
  transition: all 0.3s ease;
}
.outro__btn:hover {
  background: var(--ink);
  color: var(--bg);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================== MOBILE ===================== */
@media (max-width: 640px) {
  .controls {
    bottom: 24px;
  }
  .ctrl__progress {
    width: 100px;
  }
  .letter__stage {
    padding: 0 24px;
  }
  .line {
    width: calc(100% - 48px);
  }
}