/* =====================================================================
   TOKENS
   Paleta: atardecer de campo — cielo añil oscureciéndose hacia un
   dorado de girasol. La flor amarilla es el único protagonista de
   color; todo lo demás se mantiene en penumbra para que ella resalte.
===================================================================== */
:root{
  --sky-deep:      #211A38;   /* fondo base, cielo de atardecer */
  --sky-mid:       #3A2A52;   /* medio tono, hacia el horizonte */
  --sky-horizon:   #6B4A5E;   /* línea del horizonte, rosado apagado */
  --petal-light:   #FFDD73;   /* amarillo pétalo, luz */
  --petal-mid:     #F7C548;   /* amarillo pétalo, base */
  --petal-deep:    #D99A2B;   /* amarillo pétalo, sombra */
  --center-brown:  #7A4A1E;   /* centro de la flor */
  --stem-green:    #4F7A4A;   /* tallo y hojas */
  --paper:         #FBF3DE;   /* papel de la carta */
  --ink:           #3A2A20;   /* tinta sobre el papel */
  --text-light:    #FCEFCF;   /* texto claro sobre fondo oscuro */
  --text-muted:    rgba(252,239,207,0.68);

  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Quicksand', 'Segoe UI', sans-serif;

  --ease-soft: cubic-bezier(.22,.9,.32,1);
}

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

html, body{
  margin:0;
  padding:0;
  width:100%;
  height:100%;
  overflow-x:hidden;
  background: var(--sky-deep);
  color: var(--text-light);
  font-family: var(--font-body);
}

h1, h2, .letter-kicker, .lock-title{
  font-family: var(--font-display);
}

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

.scene{
  position: relative;
  width: 100%;
  min-height: 100svh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
}

/* =====================================================================
   ESCENA 0 — BLOQUEO / CUENTA REGRESIVA
===================================================================== */
.scene-lock{
  position: fixed;
  inset: 0;
  z-index: 50;
  flex-direction: column;
  text-align:center;
  padding: 8vh 6vw;
  background:
    radial-gradient(120% 70% at 50% 110%, var(--sky-horizon) 0%, transparent 60%),
    linear-gradient(180deg, var(--sky-deep) 0%, var(--sky-mid) 55%, var(--sky-horizon) 100%);
  transition: opacity 1.1s var(--ease-soft), visibility 1.1s var(--ease-soft);
}
.scene-lock.is-hidden{
  opacity: 0;
  visibility: hidden;
  pointer-events:none;
}

.lock-sky{
  position:absolute;
  inset:0;
  display:flex;
  align-items:flex-start;
  justify-content:center;
  padding-top: 8vh;
  pointer-events:none;
}

/* un capullo latente que respira, esperando su día */
.lock-bud{
  position:relative;
  width: 90px;
  height: 90px;
  animation: bud-breathe 4.5s ease-in-out infinite;
  opacity: 0.85;
}
@keyframes bud-breathe{
  0%, 100%{ transform: scale(1); }
  50%{ transform: scale(1.06); }
}
.lock-bud-petal{
  position:absolute;
  top:50%; left:50%;
  width: 34px; height: 50px;
  background: linear-gradient(180deg, var(--petal-mid), var(--petal-deep));
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  transform-origin: 50% 100%;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.25));
}
.lock-bud-petal.p1{ transform: translate(-50%,-100%) rotate(0deg); }
.lock-bud-petal.p2{ transform: translate(-50%,-100%) rotate(72deg); }
.lock-bud-petal.p3{ transform: translate(-50%,-100%) rotate(144deg); }
.lock-bud-petal.p4{ transform: translate(-50%,-100%) rotate(216deg); }
.lock-bud-petal.p5{ transform: translate(-50%,-100%) rotate(288deg); }
.lock-bud-center{
  position:absolute;
  top:50%; left:50%;
  width: 26px; height:26px;
  background: radial-gradient(circle at 35% 30%, #A8712F, var(--center-brown));
  border-radius:50%;
  transform: translate(-50%,-50%);
  box-shadow: inset 0 -3px 6px rgba(0,0,0,.3);
}

.lock-content{
  position:relative;
  z-index:2;
  max-width: 520px;
  margin: auto;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap: 0.4rem;
}
.lock-eyebrow{
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0 0 0.2rem;
}
.lock-title{
  font-size: clamp(2.1rem, 7vw, 3.2rem);
  font-weight: 600;
  font-style: italic;
  color: var(--petal-light);
  margin: 0 0 0.4rem;
  line-height: 1.15;
}
.lock-sub{
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 0 2rem;
  max-width: 34ch;
}

.countdown{
  display:flex;
  gap: clamp(0.6rem, 3vw, 1.4rem);
  margin-bottom: 2.2rem;
}
.countdown-unit{
  display:flex;
  flex-direction:column;
  align-items:center;
  min-width: 58px;
}
.countdown-number{
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  font-weight: 600;
  color: var(--text-light);
  line-height:1;
  font-variant-numeric: tabular-nums;
}
.countdown-label{
  margin-top: 0.35rem;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}
.lock-footer{
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* =====================================================================
   EXPERIENCIA GENERAL
   Las escenas 1-3 se superponen a pantalla completa y se alternan por
   JS (como una función que revela una carta paso a paso), no por scroll.
===================================================================== */
.experience{
  position: relative;
  width:100%;
  height: 100svh;
  overflow:hidden;
}
.experience[hidden]{ display:none; }

.experience .scene{
  position:absolute;
  inset:0;
  height: 100%;
  min-height: 0;
  opacity: 0;
  pointer-events:none;
  overflow-y:auto;
  transition: opacity 1.3s var(--ease-soft);
}
.experience .scene.is-active{
  opacity: 1;
  pointer-events:auto;
}

/* =====================================================================
   ESCENA 1 — PRIMERA FLOR Y SALUDO
===================================================================== */
.scene-1{
  flex-direction: column;
  background: linear-gradient(180deg, var(--sky-deep) 0%, var(--sky-mid) 100%);
  gap: 2rem;
}

.single-flower{
  position: relative;
  width: 70px;
  height: 110px;
  transform: translateY(-60vh);
  opacity: 0;
}
.single-flower.is-falling{
  animation: flower-fall 1.8s var(--ease-soft) forwards;
}
@keyframes flower-fall{
  0%{   transform: translateY(-60vh) rotate(-18deg); opacity: 0; }
  12%{  opacity: 1; }
  70%{  transform: translateY(0) rotate(8deg); }
  85%{  transform: translateY(-2vh) rotate(-4deg); }
  100%{ transform: translateY(0) rotate(0deg); }
}
.single-flower .stem{
  position:absolute;
  bottom:0; left:50%;
  width: 4px; height: 46px;
  background: var(--stem-green);
  border-radius: 3px;
  transform: translateX(-50%);
}
.single-flower .petal{
  position:absolute;
  top: 26px; left:50%;
  width: 26px; height: 38px;
  background: linear-gradient(180deg, var(--petal-light), var(--petal-mid));
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  transform-origin: 50% 100%;
  box-shadow: inset 0 -2px 4px rgba(150,90,10,.25);
}
.single-flower .petal.p1{ transform: translate(-50%,-100%) rotate(0deg); }
.single-flower .petal.p2{ transform: translate(-50%,-100%) rotate(72deg); }
.single-flower .petal.p3{ transform: translate(-50%,-100%) rotate(144deg); }
.single-flower .petal.p4{ transform: translate(-50%,-100%) rotate(216deg); }
.single-flower .petal.p5{ transform: translate(-50%,-100%) rotate(288deg); }
.single-flower .petal-center{
  position:absolute;
  top: 26px; left:50%;
  width: 20px; height:20px;
  background: radial-gradient(circle at 35% 30%, #A8712F, var(--center-brown));
  border-radius:50%;
  transform: translate(-50%,-50%);
}

.greeting-message{
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.5rem, 5vw, 2.4rem);
  color: var(--petal-light);
  text-align:center;
  max-width: 80vw;
  opacity: 0;
  transform: translateY(10px);
}
.greeting-message.is-visible{
  animation: greeting-in-out 4.5s ease-in-out forwards;
}
@keyframes greeting-in-out{
  0%{   opacity: 0; transform: translateY(10px); }
  15%{  opacity: 1; transform: translateY(0); }
  80%{  opacity: 1; transform: translateY(0); }
  100%{ opacity: 0; transform: translateY(-8px); }
}

/* =====================================================================
   ESCENA 2 — LLUVIA DE FLORES Y FRASES
===================================================================== */
.scene-2{
  background: linear-gradient(180deg, var(--sky-mid) 0%, var(--sky-deep) 100%);
}
#petal-canvas{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  display:block;
}
.phrase-stage{
  position:relative;
  z-index:2;
  padding: 0 8vw;
  pointer-events:none;
}
.phrase{
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.4rem, 5.5vw, 2.6rem);
  text-align:center;
  color: var(--text-light);
  text-shadow: 0 2px 18px rgba(0,0,0,.45);
  opacity:0;
  margin:0;
}
.phrase.is-visible{
  animation: phrase-in-out 3.2s ease-in-out forwards;
}
@keyframes phrase-in-out{
  0%{   opacity: 0; transform: scale(0.94); }
  18%{  opacity: 1; transform: scale(1); }
  82%{  opacity: 1; transform: scale(1); }
  100%{ opacity: 0; transform: scale(1.02); }
}

/* =====================================================================
   ESCENA 3 — FLOR PRINCIPAL Y CARTA
===================================================================== */
.scene-3{
  background: linear-gradient(180deg, var(--sky-deep) 0%, var(--sky-mid) 60%, var(--sky-horizon) 100%);
  padding: 6vh 6vw;
}
.scene-3-grid{
  width:100%;
  max-width: 1100px;
  display:grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto auto;
  gap: 2.5rem;
  align-items:center;
}

.main-flower-wrap{
  order: 1;
  display:flex;
  justify-content:center;
}
.letter-panel{
  order: 2;
}

@media (min-width: 860px){
  .scene-3-grid{
    grid-template-columns: 1.05fr 0.95fr;
    grid-template-rows: 1fr;
    gap: 3rem;
  }
  .main-flower-wrap{ order: 2; justify-content: flex-end; }
  .letter-panel{ order: 1; }
}

/* --- Carta con máquina de escribir --- */
.letter-kicker{
  font-size: 1rem;
  font-style: italic;
  color: var(--petal-light);
  margin: 0 0 0.8rem;
  letter-spacing: 0.02em;
}
.letter-paper{
  position:relative;
  background: var(--paper);
  color: var(--ink);
  border-radius: 4px;
  padding: clamp(1.4rem, 4vw, 2.4rem);
  box-shadow: 0 18px 40px rgba(0,0,0,.35), 0 2px 0 rgba(0,0,0,.05) inset;
  min-height: 260px;
}
.letter-text{
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  line-height: 1.7;
  white-space: pre-wrap;
  margin:0;
  display:inline;
}
.typewriter-cursor{
  display:inline-block;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  color: var(--center-brown);
  animation: cursor-blink 0.9s step-end infinite;
}
@keyframes cursor-blink{
  0%, 100%{ opacity: 1; }
  50%{ opacity: 0; }
}

/* --- Flor principal construida en CSS --- */
.main-flower{
  position:relative;
  width: clamp(220px, 34vw, 340px);
  height: clamp(220px, 34vw, 340px);
  margin-top: 2rem;
}
.mf-stem{
  position:absolute;
  bottom: -140px;
  left:50%;
  width: 10px;
  height: 160px;
  background: linear-gradient(180deg, var(--stem-green), #3C5F39);
  border-radius: 6px;
  transform: translateX(-50%) scaleY(0);
  transform-origin: top center;
  animation: stem-grow 1s var(--ease-soft) forwards;
  animation-delay: 0.1s;
  animation-play-state: paused;
}
@keyframes stem-grow{
  to{ transform: translateX(-50%) scaleY(1); }
}
.mf-leaf{
  position:absolute;
  bottom: -90px;
  width: 46px; height: 22px;
  background: var(--stem-green);
  border-radius: 0 100% 0 100%;
  opacity: 0;
  animation: leaf-in 0.8s var(--ease-soft) forwards;
  animation-delay: 0.9s;
}
.mf-leaf-left{ left: calc(50% - 46px); transform: rotate(10deg); }
.mf-leaf-right{ left: calc(50% + 2px); transform: scaleX(-1) rotate(10deg); }
.mf-leaf{ animation-play-state: paused; }
@keyframes leaf-in{
  from{ opacity:0; transform: scale(0.4) rotate(10deg); }
  to{   opacity:1; transform: scale(1) rotate(10deg); }
}
.mf-leaf-right{ animation-name: leaf-in-r; }
@keyframes leaf-in-r{
  from{ opacity:0; transform: scaleX(-1) scale(0.4) rotate(10deg); }
  to{   opacity:1; transform: scaleX(-1) scale(1) rotate(10deg); }
}

.mf-petals{
  position:absolute;
  inset:0;
}
.mf-petal{
  position:absolute;
  top:50%; left:50%;
  width: 30%; height: 46%;
  background: linear-gradient(180deg, var(--petal-light), var(--petal-mid) 60%, var(--petal-deep));
  border-radius: 50% 50% 50% 50% / 62% 62% 38% 38%;
  transform-origin: 50% 100%;
  transform: translate(-50%,-100%) rotate(calc(var(--i) * 45deg)) scale(0);
  box-shadow: inset 0 -6px 10px rgba(140,80,10,.3);
  animation: petal-bloom 0.7s var(--ease-soft) forwards;
  animation-delay: calc(1.1s + var(--i) * 0.12s);
  animation-play-state: paused;
}
@keyframes petal-bloom{
  0%{   transform: translate(-50%,-100%) rotate(calc(var(--i) * 45deg)) scale(0); }
  70%{  transform: translate(-50%,-100%) rotate(calc(var(--i) * 45deg)) scale(1.08); }
  100%{ transform: translate(-50%,-100%) rotate(calc(var(--i) * 45deg)) scale(1); }
}
.mf-center{
  position:absolute;
  top:50%; left:50%;
  width: 26%; height:26%;
  background: radial-gradient(circle at 35% 30%, #A8712F, var(--center-brown));
  border-radius:50%;
  transform: translate(-50%,-50%) scale(0);
  box-shadow: inset 0 -6px 10px rgba(0,0,0,.35);
  animation: petal-bloom 0.6s var(--ease-soft) forwards;
  animation-delay: 2.1s;
  animation-play-state: paused;
}

/* --- Deriva suave hacia el costado en pantallas anchas --- */
@media (min-width: 860px){
  .main-flower{
    animation: flower-drift 1.6s var(--ease-soft) forwards;
    animation-delay: 2.6s;
    animation-play-state: paused;
  }
  @keyframes flower-drift{
    to{ transform: translateX(6%); }
  }
  .scene-3.is-active .main-flower{ animation-play-state: running; }
}

/* Disparador: todas las piezas de la flor principal arrancan su
   crecimiento solo cuando la escena 3 se vuelve visible. */
.scene-3.is-active .mf-stem,
.scene-3.is-active .mf-leaf,
.scene-3.is-active .mf-petal,
.scene-3.is-active .mf-center{
  animation-play-state: running;
}