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

:root {
  --purple: #7c3aed;
  --purple2:#a855f7;
  --pink:   #ec4899;
  --gold:   #f59e0b;
  --cream:  #fdf4ff;
  --dark:   #1e1030;
  --text:   #3d1f6b;
  --shadow: 0 8px 40px rgba(124,58,237,0.18);
}

html, body { height: 100%; font-family: 'Lato', sans-serif; background: var(--cream); color: var(--text); overflow: hidden; }

/* ── Screens ── */
.screen { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity .45s ease, transform .45s cubic-bezier(.4,0,.2,1); transform: translateX(0); z-index: 1; overflow-y: auto; padding: 60px 80px; }
.screen.active { opacity: 1; pointer-events: all; z-index: 10; }
.slide-from-right { transform: translateX(50px); opacity: 0; }
.slide-from-left  { transform: translateX(-50px); opacity: 0; }
.slide-to-left    { transform: translateX(-50px); opacity: 0; }
.slide-to-right   { transform: translateX(50px);  opacity: 0; }

/* ── Start ── */
.start-screen { background: linear-gradient(160deg, #fdf4ff, #f0e6ff); }
.balloons { position: fixed; top: 20px; left: 50%; transform: translateX(-50%); font-size: 2rem; letter-spacing: 12px; animation: balloonFloat 3s ease-in-out infinite; }
@keyframes balloonFloat { 0%,100%{transform:translateX(-50%) translateY(0)} 50%{transform:translateX(-50%) translateY(-10px)} }
.start-box { text-align: center; padding: 20px; }
.cake-icon { font-size: 5rem; margin-bottom: 20px; animation: cakePop 2s ease-in-out infinite; }
@keyframes cakePop { 0%,100%{transform:scale(1)} 50%{transform:scale(1.08)} }
.start-title { font-family: 'Playfair Display', serif; font-size: 1.9rem; color: var(--dark); margin-bottom: 36px; line-height: 1.4; }
.btn-start { background: linear-gradient(135deg, var(--purple), var(--purple2)); color: #fff; border: none; border-radius: 50px; padding: 16px 52px; font-size: 1.1rem; font-family: 'Lato', sans-serif; cursor: pointer; box-shadow: 0 6px 24px rgba(124,58,237,.4); transition: transform .2s, box-shadow .2s; }
.btn-start:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(124,58,237,.5); }

/* ── Confetti bg ── */
.confetti-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; z-index: 0; }

/* ── Content box ── */
.content-box { background: #fff; border-radius: 20px; padding: 48px 40px; max-width: 700px; width: 100%; box-shadow: var(--shadow); text-align: center; max-height: calc(100vh - 80px); overflow-y: auto; position: relative; z-index: 1; }
.fade-in { animation: fadeIn .8s ease both; }
@keyframes fadeIn { from{opacity:0;transform:translateY(20px)} to{opacity:1;transform:translateY(0)} }

/* ── Welcome ── */
.birthday-icon { font-size: 3rem; margin-bottom: 12px; }
h1 { font-family: 'Playfair Display', serif; font-size: 2rem; color: var(--dark); margin-bottom: 20px; }
.big-text { font-size: 1.05rem; line-height: 1.85; color: #666; margin-bottom: 24px; }

/* ── Countdown ── */
.countdown-wrap { background: linear-gradient(135deg, #f0e6ff, #fce7f3); border-radius: 16px; padding: 20px; margin-bottom: 20px; }
.countdown-label { font-size: .85rem; color: var(--purple); letter-spacing: 1px; text-transform: uppercase; margin-bottom: 12px; font-weight: 700; }
.countdown-grid { display: flex; align-items: center; justify-content: center; gap: 8px; }
.cd-block { background: #fff; border-radius: 10px; padding: 10px 16px; min-width: 64px; box-shadow: 0 2px 8px rgba(124,58,237,.12); }
.cd-block span:first-child { display: block; font-size: 2rem; font-weight: 700; color: var(--purple); font-family: 'Playfair Display', serif; }
.cd-label { font-size: .7rem; color: #aaa; text-transform: uppercase; letter-spacing: 1px; }
.cd-sep { font-size: 1.8rem; color: var(--purple); font-weight: 700; }
.birthday-today { background: linear-gradient(135deg, #f0e6ff, #fce7f3); border-radius: 14px; padding: 16px; font-size: 1.1rem; font-family: 'Playfair Display', serif; color: var(--purple); margin-bottom: 16px; }
.hint-puzzle { font-size: .9rem; color: #aaa; margin-bottom: 28px; }
.hint-puzzle strong { color: var(--purple); }
.section-title { font-family: 'Playfair Display', serif; font-size: 1.7rem; color: var(--dark); margin-bottom: 24px; }

/* ── Progress bar ── */
#progressBar { position: fixed; top: 0; left: 0; width: 100%; height: 4px; background: rgba(124,58,237,.15); z-index: 200; }
#progressFill { height: 100%; width: 0%; background: linear-gradient(90deg,var(--purple),var(--pink)); transition: width .8s cubic-bezier(.4,0,.2,1); border-radius: 0 2px 2px 0; }

/* ── Puzzle ── */
.puzzle-box { border-top: 4px solid var(--purple); }
.puzzle-final { border-top: 4px solid var(--gold); }
.puzzle-screen { overflow: hidden; }
.puzzle-nr { font-size: .8rem; letter-spacing: 2px; text-transform: uppercase; color: var(--purple); margin-bottom: 12px; font-weight: 700; }
.puzzle-final .puzzle-nr { color: var(--gold); }
.lock-icon { font-size: 2.4rem; margin-bottom: 10px; display: block; }
.lock-icon.unlock { animation: unlockPop .6s ease forwards; }
@keyframes unlockPop { 0%{transform:scale(1) rotate(0)} 30%{transform:scale(1.4) rotate(-15deg)} 60%{transform:scale(1.2) rotate(10deg)} 100%{transform:scale(1) rotate(0)} }
.puzzle-question { font-family: 'Playfair Display', serif; font-size: 1.5rem; color: var(--dark); margin-bottom: 28px; line-height: 1.4; }
.input-wrap { display: flex; gap: 10px; margin-bottom: 16px; }
.puzzle-input { flex: 1; padding: 13px 18px; border: 2px solid #e9d5ff; border-radius: 50px; font-size: 1rem; font-family: 'Lato', sans-serif; outline: none; transition: border .2s; }
.puzzle-input:focus { border-color: var(--purple); }
.btn-check { background: var(--purple); color: #fff; border: none; border-radius: 50px; padding: 13px 24px; font-size: 1rem; cursor: pointer; white-space: nowrap; transition: background .2s, transform .15s; }
.btn-check:hover { background: #6d28d9; transform: translateY(-2px); }
.btn-purple { background: linear-gradient(135deg,var(--purple),var(--purple2)); }
.puzzle-err  { color: var(--pink); font-size: .95rem; margin-top: 8px; animation: shake .4s ease; }
.puzzle-hint { color: var(--gold); font-size: .9rem; margin-top: 8px; font-style: italic; }
.puzzle-ok   { color: #10b981; font-size: .95rem; font-weight: 700; margin-top: 8px; }
@keyframes shake { 0%,100%{transform:translateX(0)} 20%,60%{transform:translateX(-8px)} 40%,80%{transform:translateX(8px)} }
.hidden { display: none !important; }

/* ── Gallery ── */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px,1fr)); gap: 12px; margin-bottom: 12px; }
.gallery-grid img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 12px; cursor: zoom-in; transition: transform .2s; box-shadow: 0 2px 10px rgba(0,0,0,.1); opacity: 0; }
.gallery-grid img.photo-in { animation: photoIn .5s ease forwards; }
.gallery-grid img.photo-float { animation: photoFloat var(--float-dur,3s) ease-in-out infinite; }
@keyframes photoIn { from{opacity:0;transform:scale(.88) translateY(12px)} to{opacity:1;transform:scale(1) translateY(0)} }
@keyframes photoFloat { 0%,100%{transform:translateY(0) rotate(var(--rot-start,-1deg))} 50%{transform:translateY(-5px) rotate(var(--rot-end,1deg))} }
.scroll-hint { text-align:center; font-size:.8rem; color:#bbb; padding:8px 0 4px; letter-spacing:1px; animation:scrollBounce 1.5s ease-in-out infinite; margin-bottom:12px; }
@keyframes scrollBounce { 0%,100%{transform:translateY(0)} 50%{transform:translateY(4px)} }

/* ── Lightbox ── */
#lightbox { display:none; position:fixed; inset:0; background:rgba(0,0,0,.88); z-index:999; align-items:center; justify-content:center; cursor:pointer; }
#lightbox.open { display:flex; }
#lightbox img { max-width:88vw; max-height:88vh; border-radius:10px; transition:opacity .15s; }
.lb-nav { position:fixed; top:50%; transform:translateY(-50%); background:rgba(255,255,255,.15); border:none; color:#fff; font-size:3rem; line-height:1; padding:10px 18px; cursor:pointer; border-radius:8px; z-index:1000; user-select:none; }
.lb-nav:hover { background:rgba(255,255,255,.3); }
.lb-prev { left:12px; } .lb-next { right:12px; }
.lb-close { position:fixed; top:16px; right:16px; background:rgba(255,255,255,.15); border:none; color:#fff; font-size:1.4rem; width:40px; height:40px; border-radius:50%; cursor:pointer; z-index:1000; }

/* ── Video ── */
.video-wrap { border-radius:18px; overflow:hidden; margin:0 auto 16px; box-shadow:0 8px 32px rgba(0,0,0,.22); aspect-ratio:9/16; width:min(340px,75vw); background:#000; }
video { width:100%; height:100%; display:block; object-fit:cover; }
.caption { font-size:.95rem; color:#888; margin-bottom:28px; font-style:italic; }

/* ── Letter ── */
.letter-box { text-align:left; background:#fdf8f4 !important; background-image:repeating-linear-gradient(transparent, transparent 31px, #e9d5ff 32px) !important; }
.letter-header { display:flex; align-items:center; gap:12px; margin-bottom:20px; flex-wrap:wrap; }
.letter-header span { font-size:2rem; }
.letter-header h2 { font-family:'Playfair Display',serif; font-size:1.5rem; color:var(--dark); flex:1; }
.letter-text { font-size:1.05rem; line-height:2; color:#3d1f6b; white-space:pre-line; margin-bottom:20px; font-family:'Georgia',serif; }
.signature { text-align:right; font-size:1.1rem; color:var(--purple); margin-bottom:28px; font-family:'Playfair Display',serif; font-style:italic; }
.btn-skip { background:transparent; border:1px solid #ddd; color:#aaa; border-radius:50px; padding:5px 14px; font-size:.8rem; cursor:pointer; transition:all .2s; white-space:nowrap; }
.btn-skip:hover { border-color:var(--purple); color:var(--purple); }

/* ── Reveal ── */
#confettiCanvas { position:absolute; inset:0; pointer-events:none; z-index:0; }
.reveal-box { position:relative; z-index:1; }
.big-birthday { font-size:4.5rem; margin-bottom:16px; animation:birthdayPop 1.2s ease-in-out infinite; }
@keyframes birthdayPop { 0%,100%{transform:scale(1) rotate(-3deg)} 50%{transform:scale(1.15) rotate(3deg)} }
.gift-box-reveal { background:linear-gradient(135deg,#f0e6ff,#fce7f3); border-radius:16px; padding:20px; margin:20px 0 16px; }
.gift-icon { font-size:2.5rem; margin-bottom:8px; }
.final-balloons { font-size:2rem; letter-spacing:12px; margin-top:8px; }
.reveal-seq { transition:opacity .6s ease, transform .6s ease; transform:translateY(16px); }
.reveal-seq.visible { opacity:1 !important; transform:translateY(0) !important; }

/* ── Buttons ── */
.btn-next { background:var(--purple); color:#fff; border:none; border-radius:50px; padding:13px 36px; font-size:1rem; font-family:'Lato',sans-serif; cursor:pointer; transition:background .2s,transform .15s; box-shadow:0 4px 18px rgba(124,58,237,.35); }
.btn-next:hover { background:#6d28d9; transform:translateY(-2px); }
.btn-replay { display:inline-block; margin-top:16px; background:transparent; border:1.5px solid rgba(124,58,237,.35); color:var(--purple); border-radius:50px; padding:10px 28px; font-size:.9rem; font-family:'Lato',sans-serif; cursor:pointer; transition:background .2s,transform .15s; }
.btn-replay:hover { background:rgba(124,58,237,.08); transform:scale(1.05); }
.nav-arrow { position:fixed; top:50%; transform:translateY(-50%); z-index:50; background:rgba(124,58,237,.12); border:2px solid rgba(124,58,237,.25); color:var(--purple); font-size:2.4rem; width:52px; height:52px; border-radius:50%; cursor:pointer; transition:background .2s,transform .2s; display:flex; align-items:center; justify-content:center; }
.nav-arrow:hover { background:rgba(124,58,237,.25); transform:translateY(-50%) scale(1.1); }
.nav-arrow.disabled { opacity:.2; cursor:not-allowed; pointer-events:none; }
.nav-left { left:18px; } .nav-right { right:18px; }
.nav-arrow.hidden { display:none; }

/* ── Music ── */
.music-player { position:fixed; top:20px; right:20px; z-index:100; }
.music-player.hidden { display:none; }
.music-btn { width:46px; height:46px; border-radius:50%; background:rgba(124,58,237,.9); border:none; color:#fff; font-size:1.2rem; cursor:pointer; display:flex; align-items:center; justify-content:center; transition:transform .2s; }
.music-btn:hover { transform:scale(1.1); }
.music-btn.paused { background:rgba(100,100,100,.7); }
.typing-cursor { display:inline-block; width:2px; height:1.1em; background:var(--purple); margin-left:2px; vertical-align:text-bottom; animation:blink .7s step-end infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

@media(max-width:600px) {
  .screen { padding:50px 12px 30px; }
  .content-box { padding:28px 16px; }
  h1 { font-size:1.5rem; }
  .input-wrap { flex-direction:column; }
  .btn-check { width:100%; }
  .gallery-grid { grid-template-columns:repeat(2,1fr); }
  .nav-arrow { display:none; }
  .countdown-grid { gap:4px; }
  .cd-block { padding:8px 10px; min-width:52px; }
  .cd-block span:first-child { font-size:1.6rem; }
}