/* =========================================================
   TOKENS
   ========================================================= */
:root{
  --sky-1: #7a6cc9;   /* top of sky, dusk purple      */
  --sky-2: #b285c9;   /* upper-mid, orchid            */
  --sky-3: #ef9bc0;   /* lower-mid, sunset pink       */
  --sky-4: #ffc9a8;   /* horizon, peach               */

  --ink:        #3a2559;   /* outline / dark text ink   */
  --pink:       #ff6fa8;   /* headline pink             */
  --pink-dark:  #d9487f;   /* headline shadow / accent  */
  --cream:      #f6e4bf;   /* paper / cream surfaces    */
  --cream-dark: #cda874;   /* paper edge / shadow       */
  --white:      #fffaf3;
  --gold:       #ffb703;

  --font-display: "Press Start 2P", monospace;
  --font-body: "VT323", monospace;

  --pixel-border: 4px;
}

*{ box-sizing: border-box; }
html,body{
  margin:0; padding:0; height:100%;
  overflow:hidden;
  font-family: var(--font-body);
  color: var(--ink);
  image-rendering: pixelated;
}

button{ font-family: var(--font-display); cursor:pointer; }

/* =========================================================
   SKY BACKGROUND (shared across every screen)
   ========================================================= */
.sky{
  position: fixed; inset: 0;
  background: linear-gradient(to bottom,
    var(--sky-1) 0%,
    var(--sky-2) 38%,
    var(--sky-3) 68%,
    var(--sky-4) 100%);
  z-index: 0;
  overflow: hidden;
}

.stars{ position:absolute; inset:0; }
.stars span{
  position:absolute;
  background: var(--white);
  animation: twinkle 2.6s infinite ease-in-out;
}

.cloud{
  position:absolute;
  background: var(--white);
  opacity:.85;
  clip-path: polygon(
    10% 60%, 20% 40%, 35% 30%, 50% 35%, 62% 20%, 78% 30%,
    90% 45%, 100% 60%, 100% 85%, 0% 85%
  );
  filter: drop-shadow(0 6px 0 rgba(150,120,190,.35));
}
.cloud--a{ width:260px; height:110px; top:6%;  left:-4%; }
.cloud--b{ width:320px; height:130px; top:20%; right:-6%; opacity:.7; }
.cloud--c{ width:520px; height:200px; bottom:-4%; left:10%; opacity:.9; }
.cloud--d{ width:380px; height:160px; bottom:2%; right:-4%; opacity:.75; }

@keyframes twinkle{
  0%,100%{ opacity:.25; }
  50%{ opacity:1; }
}

/* =========================================================
   APP / SCREEN SWITCHING
   ========================================================= */
.app{
  position:relative; z-index:1;
  width:100vw; height:100vh;
}

.screen{
  position:absolute; inset:0;
  display:none;
  align-items:center; justify-content:center;
  flex-direction:column;
  padding: 6vh 6vw;
  opacity:0;
  transform: translateX(24px);
  transition: opacity .35s ease, transform .35s ease;
}
.screen.is-active{
  display:flex;
  opacity:1;
  transform: translateX(0);
}
.screen--pink{ background: radial-gradient(circle at 50% 20%, #ff9dc4, #ff6fa8 70%); }

/* pixel text shadow helper — crisp stepped outline look */
.pixel-title{
  font-family: var(--font-display);
  color: var(--pink);
  -webkit-text-stroke: 3px var(--ink);
  text-shadow:
    3px 3px 0 var(--ink),
    3px 0 0 var(--ink),
    0 3px 0 var(--ink),
    -3px 0 0 var(--ink),
    0 -3px 0 var(--ink);
  line-height:1.5;
  text-align:center;
  font-size: clamp(1.8rem, 5vw, 3.4rem);
  margin: 0;
}
.pixel-title--md{ font-size: clamp(1.4rem, 4vw, 2.4rem); }
.pixel-title--sm{ font-size: clamp(1rem, 2.6vw, 1.5rem); }

/* =========================================================
   BUTTONS / NAV
   ========================================================= */
.btn-pixel{
  margin-top: 2rem;
  background: var(--pink-dark);
  color: var(--white);
  border: 4px solid var(--ink);
  box-shadow: 0 6px 0 var(--gold), 0 6px 0 4px var(--ink);
  padding: .9rem 2.4rem;
  font-size: .95rem;
  letter-spacing: 1px;
  transition: transform .12s ease;
}
.btn-pixel:hover{ transform: translateY(2px); }
.btn-pixel:active{ transform: translateY(6px); box-shadow: 0 0 0 var(--gold), 0 0 0 4px var(--ink); }

.arrow-next, .arrow-back{
  position:absolute;
  width:56px; height:56px;
  background: var(--pink);
  border: 4px solid var(--ink);
  border-radius: 50%;
  color: var(--white);
  font-size: 1.3rem;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow: 0 4px 0 var(--ink);
  z-index:5;
  transition: transform .15s ease;
}
.arrow-next{ bottom: 8vh; right: 6vw; }
.arrow-next:hover{ transform: translateX(6px); }

.arrow-next--envelope{
  background: var(--gold);
}

.arrow-next--envelope:hover{
  background: #ffc84d;
}

.arrow-back{
  top: 5vh; left: 5vw;
  opacity:0;
  pointer-events:none;
  transition: opacity .2s ease, transform .15s ease;
}
.arrow-back.is-visible{ opacity:1; pointer-events:auto; }
.arrow-back:hover{ transform: translateX(-6px); }

/* =========================================================
   SCREEN 0 — COVER
   ========================================================= */
.cover-layout{
  display:flex; align-items:center; justify-content:space-between;
  width:100%; max-width:1100px; gap: 3rem; flex-wrap:wrap;
}
.cover-characters{
  position:relative;
  background: linear-gradient(180deg, rgba(255,180,210,.55), rgba(255,180,210,.15));
  border-radius: 40px 40px 10px 10px;
  padding: 2rem 2.5rem 0;
  display:flex; gap: 1rem; align-items:flex-end;
}
.heart-pop{
  position:absolute; top:-10px; left:44%;
  color: var(--pink); font-size:1.6rem;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob{ 0%,100%{transform:translateY(0);} 50%{transform:translateY(-8px);} }
.char{ image-rendering: pixelated; }
.char--boy, .char--girl{ width: 250px;  }
.cover-copy{ flex:1; min-width:280px; display:flex; flex-direction:column; align-items:center; }
.btn-start{ font-size:1.2rem; }

/* =========================================================
   SCREENS 1 & 9 — side layout with speech bubble
   ========================================================= */
.side-layout{
  display:flex; align-items:center; gap: 3rem; flex-wrap:wrap; justify-content:center;
  max-width: 1000px;
}
.char--solo{ width:220px; height:auto; }
.bubble{
  position:relative;
  background: var(--white);
  border: 4px solid var(--pink);
  padding: 1.6rem 2rem;
  max-width: 420px;
  font-size: 1.6rem;
  color: var(--pink);
  text-align:center;
}
.bubble p{ margin:0; }
.bubble--right::before{
  content:"";
  position:absolute; left:-2px; bottom:-24px;
  width:0; height:0;
  border: 16px solid transparent;
  border-top-color: var(--pink);
  transform: translateX(20px);
}

/* =========================================================
   SCREEN 2 / 4 / 7 — HUB (choose gifts)
   ========================================================= */
.gift-row{ display:flex; gap: 3rem; margin-top: 3rem; flex-wrap:wrap; justify-content:center; }
.gift-box{
  width: 130px; height:130px;
  background: none;
  border:none;
  position:relative;
  transition: transform .15s ease;
}
.gift-box:hover{ transform: translateY(-6px) scale(1.03); }
.gift-box svg{ width:100%; height:100%; }
.gift-box.is-opened{ opacity:.45; pointer-events:none; }
.gift-box.is-opened::after{
  content:"opened"; position:absolute; bottom:-1.6rem; left:50%; transform:translateX(-50%);
  font-family: var(--font-body); color: var(--ink); font-size:1.1rem;
}
.hub-hint{ margin-top:2.6rem; font-size:1.3rem; color:var(--white); text-shadow: 1px 1px 0 var(--ink); }

/* =========================================================
   SCREEN 3 — PHOTO COLLAGE
   ========================================================= */
.collage{ position:relative; width:100%; max-width:1000px; height:70vh; }
.collage-title{ position:absolute; top:2%; right:0; text-align:right; }
.char--collage{ position:absolute; left:0; bottom:8%; width:190px; }
.window-frame{
  position:absolute;
  background: var(--white);
  border:4px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(0,0,0,.25);
}
.window--a{ top:6%; left:26%; width:300px; }
.window--b{ bottom:4%; right:2%; width:300px; }
.window-bar{
  display:flex; gap:6px; align-items:center;
  background: var(--pink);
  padding:.3rem .5rem;
  border-bottom:4px solid var(--ink);
}
.window-bar span{ width:10px; height:10px; border-radius:50%; background:var(--white); display:inline-block; }
.window-bar--alt{ justify-content:space-between; background: var(--cream); font-size:.8rem; }
.window-bar--alt span{ width:auto; height:auto; border-radius:0; background:none; color:var(--ink); font-weight:bold; }
.collage-photo{ display:block; width:100%; height:auto; }
.sticker{ position:absolute; font-size:2.4rem; filter: drop-shadow(2px 2px 0 var(--ink)); }
.sticker--camera{ left:2%; top:36%; }
.sticker--bear{ right:26%; top:4%; }
.sticker--gift{ left:30%; bottom:0; }
.btn-continue{ position:relative; z-index:2; }

/* =========================================================
   SCREEN 5 — ENVELOPE
   ========================================================= */
.envelope{ position:relative; width:340px; height:260px; }
.envelope-heart{
  position:absolute; top:-46px; left:50%; transform:translateX(-50%);
  color: var(--pink-dark); font-size:4rem;
  filter: drop-shadow(3px 3px 0 var(--ink));
}
.envelope-body{
  position:absolute; inset:0; top:36px;
  background: var(--cream);
  border:4px solid var(--cream-dark);
  display:flex; align-items:center; justify-content:center;
  text-align:center;
}
.envelope-body p{ font-family: var(--font-body); font-size:2.2rem; color:var(--ink); margin:0; }
.envelope-flap{
  position:absolute; bottom:-14px; width:50%; height:60px;
  background: var(--white);
  border:4px solid var(--ink);
}
.envelope-flap--l{ left:-4%; clip-path: polygon(0 0, 100% 100%, 0 100%); }
.envelope-flap--r{ right:-4%; clip-path: polygon(100% 0, 100% 100%, 0 100%); }

/* =========================================================
   SCREEN 6 — LETTER
   ========================================================= */
.letter-paper{
  background: var(--cream);
  border: 4px solid var(--cream-dark);
  box-shadow: 8px 8px 0 rgba(0,0,0,.15);
  max-width: 720px;
  padding: 2.4rem 2.8rem;
  font-family: var(--font-body);
  font-size: 1.5rem;
  line-height: 1.5;
  color: var(--ink);
  max-height: 66vh;
  overflow-y: auto;
}

/* =========================================================
   SCREEN 8 — SONG PLAYER
   ========================================================= */
.song-layout{ display:flex; gap: 3rem; align-items:center; flex-wrap:wrap; justify-content:center; max-width:1100px; }
.player{ width:360px; background: #c9a6e0; border:4px solid var(--ink); box-shadow:6px 6px 0 rgba(0,0,0,.2); }
.player-bar{
  display:flex; justify-content:space-between; align-items:center;
  background: #b98ad4; padding:.5rem .8rem; font-size:.8rem; color:var(--ink); border-bottom:4px solid var(--ink);
}
.player-dots{ display:flex; gap:4px; }
.player-dots i{ width:10px; height:10px; background:var(--white); display:inline-block; border:2px solid var(--ink); }
.player-screen{ background:#1a1424; aspect-ratio: 16/10; display:flex; align-items:center; justify-content:center; }
.player-screen iframe{ width:100%; height:100%; border:0; }
.player-placeholder{ color:#e6a8c8; text-align:center; font-family: var(--font-body); font-size:1.4rem; }
.player-controls{
  display:flex; justify-content:space-around; align-items:center;
  padding:.8rem; font-size:1.3rem; color:var(--ink);
}
.player-play{ font-size:1.8rem; }
.song-copy{ display:flex; flex-direction:column; align-items:center; gap:1rem; }
.char--song{ width:170px; }

/* =========================================================
   SCREEN 9 — CONFETTI
   ========================================================= */
.confetti{ position:absolute; inset:0; pointer-events:none; overflow:hidden; z-index:2; }
.confetti i{
  position:absolute; top:-20px;
  width:10px; height:10px;
  animation: fall linear infinite;
}
@keyframes fall{
  to{ transform: translateY(110vh) rotate(360deg); }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 720px){
  .cover-layout, .side-layout, .song-layout{ flex-direction:column; text-align:center; }
  .char--boy, .char--girl{ width:110px; }
  .collage{ height:80vh; }
  .window--a{ width:220px; left:8%; }
  .window--b{ width:220px; }
  .letter-paper{ font-size:1.2rem; padding:1.6rem; }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ animation: none !important; transition: none !important; }
}