/* Lov3ly · Mẫu 04 — Đếm Ngày Yêu */
:root{
  --ink:#4a2b3a; --muted:#a2758a; --pink:#ff6b9d; --pink2:#ff8fb5; --hot:#e75480; --deep:#c2437a;
  --line:#ffd9e6; --head:"Playfair Display",Georgia,serif; --script:"Dancing Script",cursive; --sans:"Be Vietnam Pro",system-ui,sans-serif;
  --sh:0 14px 34px rgba(231,84,128,.13); --sh-lg:0 26px 60px rgba(194,67,122,.20);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--sans); color:var(--ink); line-height:1.65; overflow-x:hidden; min-height:100vh;
  background:radial-gradient(720px 380px at 8% -4%, #ffe3ee 0%, transparent 60%),
             radial-gradient(680px 360px at 96% 4%, #e9e2ff 0%, transparent 60%),
             linear-gradient(180deg,#fff7f9,#fffdf8 55%,#fff5f8); background-attachment:fixed}
.script{font-family:var(--script)}
.hidden{display:none !important}

.hearts{position:fixed; inset:0; pointer-events:none; z-index:0; overflow:hidden}
.hearts span{position:absolute; bottom:-6vh; opacity:0; animation:rise linear infinite}
@keyframes rise{0%{transform:translateY(0) rotate(-8deg); opacity:0}10%{opacity:.5}90%{opacity:.4}100%{transform:translateY(-112vh) rotate(14deg); opacity:0}}

.screen{display:none; position:relative; z-index:1; min-height:100vh; min-height:100dvh;
  flex-direction:column; align-items:center; justify-content:center; text-align:center; padding:44px 20px 90px}
.screen.active{display:flex; animation:fadeUp .65s cubic-bezier(.22,1,.36,1) both}
@keyframes fadeUp{from{opacity:0; transform:translateY(14px); filter:blur(6px)}to{opacity:1; transform:none; filter:blur(0)}}

.kicker{display:inline-block; background:#fff; border:2px dashed var(--pink2); color:var(--deep); font-weight:700;
  font-size:12.5px; letter-spacing:.18em; text-transform:uppercase; padding:7px 18px; border-radius:999px; transform:rotate(-1.2deg); box-shadow:var(--sh)}
.big{font-family:var(--head); font-weight:700; font-size:clamp(40px,9vw,64px); line-height:1.15; margin-top:24px; color:var(--ink)}
.names{font-family:var(--head); font-weight:700; font-size:clamp(21px,5.4vw,29px); margin-top:16px; display:flex; gap:12px; align-items:center}
.names-heart{display:inline-block; animation:beat 1.1s ease-in-out infinite; line-height:0}
.names-heart svg{width:24px; height:24px}
@keyframes beat{0%,100%{transform:scale(1)}25%{transform:scale(1.22)}45%{transform:scale(1.05)}}
.sub{max-width:520px; font-weight:300; font-size:16px; color:#7c4a61; margin-top:12px}
.hint{margin-top:16px; font-size:13px; color:var(--muted); font-weight:300}

.btn-main{display:inline-flex; align-items:center; justify-content:center; gap:8px; font-family:var(--sans); font-weight:700; font-size:16px;
  padding:14px 30px; border-radius:999px; border:2px solid transparent; cursor:pointer; margin-top:30px;
  background:linear-gradient(180deg,var(--pink2),var(--pink) 55%,var(--hot)); color:#fff; box-shadow:0 12px 26px rgba(231,84,128,.35);
  transition:transform .25s cubic-bezier(.22,1,.36,1), box-shadow .25s cubic-bezier(.22,1,.36,1)}
.btn-main:hover{transform:translateY(-2px) rotate(-.4deg); box-shadow:0 16px 34px rgba(231,84,128,.45)}
.btn-main:active{transform:scale(.97)}
.btn-soft{display:inline-flex; align-items:center; gap:8px; font-family:var(--sans); font-weight:700; font-size:15px;
  padding:12px 26px; border-radius:999px; border:2px solid var(--line); background:#fff; color:var(--ink); cursor:pointer; margin-top:26px; box-shadow:var(--sh);
  transition:transform .25s cubic-bezier(.22,1,.36,1)}
.btn-soft:active{transform:scale(.97)}

/* Bộ đếm */
.counter-kicker{font-family:var(--sans); font-weight:600; font-size:16px; color:var(--muted); letter-spacing:.18em; text-transform:uppercase}
.days-wrap{display:flex; align-items:baseline; gap:12px; margin-top:6px}
#days-num{font-family:var(--head); font-weight:800; font-size:clamp(96px,26vw,168px); line-height:1;
  display:inline-block; font-variant-numeric:tabular-nums;
  background:linear-gradient(180deg,var(--pink2),var(--hot) 70%,var(--deep)); -webkit-background-clip:text; background-clip:text; color:transparent;
  filter:drop-shadow(0 10px 24px rgba(231,84,128,.25));
  animation:daysBeat 1.7s ease-in-out infinite; transform-origin:center 62%}
@keyframes daysBeat{0%,100%{transform:scale(1)} 8%{transform:scale(1.017)} 16%{transform:scale(1)} 24%{transform:scale(1.011)} 34%{transform:scale(1)}}
.days-label{font-family:var(--script); font-size:clamp(26px,6vw,38px); color:var(--deep)}
.units{display:flex; gap:12px; margin-top:18px}
.unit{background:rgba(255,255,255,.78); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.35); border-radius:18px; min-width:84px; padding:10px 8px;
  box-shadow:var(--sh), 0 0 0 1px rgba(255,217,230,.7), inset 0 1px 0 rgba(255,255,255,.85)}
.unit b{font-family:var(--head); font-weight:800; font-size:26px; display:block; line-height:1.1; font-variant-numeric:tabular-nums}
.unit span{font-size:12px; color:var(--muted); font-weight:600; letter-spacing:.06em; text-transform:uppercase}
.milestones{margin-top:34px; width:min(520px,100%)}
.ms-row{display:flex; flex-wrap:wrap; gap:8px; justify-content:center}
.ms{font-family:var(--sans); font-weight:600; font-size:12.5px; padding:7px 13px; border-radius:999px; display:inline-flex; align-items:center; gap:6px}
.ms svg{width:13px; height:13px; flex:none}
  background:#fff; border:2px solid var(--line); color:var(--muted); opacity:.55; transition:all .4s}
.ms.lit{background:linear-gradient(180deg,#ffeef4,#ffd9e6); border-color:var(--pink2); color:var(--deep); opacity:1; transform:rotate(-1.5deg)}
.ms-bar{height:12px; border-radius:99px; background:#ffeef4; border:1.5px solid var(--line); margin-top:16px; overflow:hidden}
.ms-bar i{display:block; height:100%; width:0; border-radius:99px; background:linear-gradient(90deg,var(--pink2),var(--hot)); transition:width 1.2s cubic-bezier(.22,1,.36,1);
  position:relative; overflow:hidden}
.ms-bar i::after{content:""; position:absolute; inset:0; border-radius:99px;
  background:linear-gradient(105deg, transparent 25%, rgba(255,255,255,.65) 50%, transparent 75%);
  transform:translateX(-130%); animation:msShimmer 2.8s ease-in-out 1.2s infinite}
@keyframes msShimmer{0%{transform:translateX(-130%)} 45%,100%{transform:translateX(130%)}}
.ms-next{margin-top:10px; font-size:13.5px; color:#7c4a61; font-weight:300}

/* Ảnh polaroid */
.sec-title{font-family:var(--head); font-weight:700; font-size:clamp(32px,7.6vw,46px); color:var(--ink)}
.wall{display:flex; flex-wrap:wrap; gap:20px; justify-content:center; margin-top:30px; max-width:860px}
.polaroid{position:relative; background:#fff; padding:10px 10px 12px; border-radius:8px; box-shadow:var(--sh-lg); width:min(240px,78vw)}
.polaroid img{width:100%; height:230px; object-fit:cover; border-radius:5px; display:block; background:#ffe9f1}
.polaroid figcaption{font-family:var(--script); font-size:19px; color:#8a5a6e; margin-top:9px; line-height:1.3}
.polaroid .tape{position:absolute; top:-12px; left:50%; transform:translateX(-50%) rotate(-3deg); width:86px; height:24px;
  background:rgba(255,214,231,.75); border-left:1.5px dashed rgba(194,67,122,.25); border-right:1.5px dashed rgba(194,67,122,.25); z-index:2}
.polaroid.p1{animation:floaty1 6.5s ease-in-out infinite}
.polaroid.p2{animation:floaty2 7.5s ease-in-out .8s infinite}
.polaroid.p3{animation:floaty3 7s ease-in-out .4s infinite}
@keyframes floaty1{0%,100%{transform:rotate(-4deg) translateY(0)}50%{transform:rotate(-4deg) translateY(-7px)}}
@keyframes floaty2{0%,100%{transform:rotate(2.5deg) translateY(10px)}50%{transform:rotate(2.5deg) translateY(3px)}}
@keyframes floaty3{0%,100%{transform:rotate(-2deg) translateY(0)}50%{transform:rotate(-2deg) translateY(-6px)}}

/* Lá thư */
.letter-card{background:rgba(255,253,247,.85); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.35); border-radius:20px;
  box-shadow:var(--sh-lg), 0 0 0 1px rgba(255,217,230,.7), inset 0 1px 0 rgba(255,255,255,.85);
  max-width:600px; width:100%; text-align:left; padding:34px 30px 30px; position:relative;
  background-image:repeating-linear-gradient(180deg, transparent 0 33px, rgba(231,84,128,.09) 33px 34px)}
.letter-card h3{font-size:36px; color:var(--deep); margin-bottom:14px}
.letter-card p{font-weight:300; font-size:15.5px; line-height:34px; color:#5d3a4a; margin-bottom:6px}
.letter-card .signoff{margin-top:16px}
.signature{font-size:29px; color:var(--deep); text-align:right; margin-top:2px}

/* Kết */
.big-heart{animation:beat 1.1s ease-in-out infinite; filter:drop-shadow(0 16px 30px rgba(231,84,128,.4)); line-height:0}
.big-heart svg{width:92px; height:92px}
.finale-line{font-family:var(--head); font-weight:700; font-size:clamp(20px,5.4vw,27px); max-width:560px; margin-top:22px; line-height:1.5}
.finale-days{margin-top:14px; color:var(--muted); font-weight:300; font-size:15px}
.finale-days span{font-family:var(--head); font-weight:800; color:var(--hot)}

.music-toggle{position:fixed; right:16px; bottom:calc(16px + env(safe-area-inset-bottom)); z-index:60; width:50px; height:50px; border-radius:50%;
  border:2px solid var(--line); background:#fff; box-shadow:var(--sh-lg); color:var(--deep); cursor:pointer;
  display:flex; align-items:center; justify-content:center}
.music-toggle svg{width:20px; height:20px}
.music-toggle:active{transform:scale(.97)}
.music-toggle.playing{background:linear-gradient(180deg,var(--pink2),var(--hot)); color:#fff; border-color:transparent; animation:spinPulse 2.4s linear infinite}
@keyframes spinPulse{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){ .hearts{display:none} .screen.active{animation:none} }
@media (prefers-reduced-motion: reduce){ #days-num{animation:none} .ms-bar i::after{animation:none; display:none} }

/* — Những con số biết nói — */
.stats-grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(158px,1fr)); gap:14px; margin-top:30px}
.stat-card{background:rgba(255,255,255,.78); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.35); border-radius:20px; padding:20px 16px; text-align:center;
  box-shadow:var(--sh), 0 0 0 1px rgba(255,217,230,.7), inset 0 1px 0 rgba(255,255,255,.85);
  animation:statIn .65s cubic-bezier(.22,1,.36,1) both}
.stat-card:nth-child(2){animation-delay:.08s}.stat-card:nth-child(3){animation-delay:.16s}
.stat-card:nth-child(4){animation-delay:.24s}.stat-card:nth-child(5){animation-delay:.32s}.stat-card:nth-child(6){animation-delay:.4s}
@keyframes statIn{from{opacity:0; transform:translateY(16px) scale(.96)} to{opacity:1; transform:none}}
.stat-icon{font-size:26px; line-height:1}
.stat-icon svg{width:26px; height:26px}
.stat-num{display:block; font-family:var(--head); font-weight:800; font-size:clamp(21px,5.4vw,27px); color:var(--hot); margin-top:8px; line-height:1.15; font-variant-numeric:tabular-nums}
.stat-label{display:block; font-family:var(--sans); font-weight:600; font-size:13.5px; color:var(--ink); margin-top:3px}
.stat-note{display:block; font-size:12.5px; font-weight:300; color:var(--muted); margin-top:6px; line-height:1.55}
#btn-stats-next{margin:28px auto 0; display:flex}

/* — Lời hứa ở kết — */
.promises{max-width:520px; margin:28px auto 0; background:rgba(255,255,255,.78); -webkit-backdrop-filter:blur(14px); backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.35); border-radius:22px;
  padding:24px 26px; box-shadow:var(--sh), 0 0 0 1px rgba(255,217,230,.7), inset 0 1px 0 rgba(255,255,255,.85); text-align:left}
.promises-title{font-family:var(--head); font-weight:700; font-size:17px; color:var(--deep); text-align:center}
.promises ul{list-style:none; margin-top:14px; display:grid; gap:11px}
.promises li{font-size:14.5px; font-weight:300; line-height:1.7; color:#5d3a4a; padding-left:28px; position:relative}
.promises li::before{content:""; position:absolute; left:0; top:4px; width:14px; height:14px;
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath fill='%23e75480' d='M12 20.7C6.4 16.9 3 13.6 3 9.9 3 7.2 5 5 7.7 5c1.7 0 3.3.9 4.3 2.4C13 5.9 14.6 5 16.3 5 19 5 21 7.2 21 9.9c0 3.7-3.4 7-9 10.8z'/%3E%3C/svg%3E") center/contain no-repeat}

/* ===== V2: lớp noise hạt mịn phủ cố định ===== */
.lv-noise{position:fixed; inset:0; z-index:90; pointer-events:none; opacity:.035;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}
.hearts span svg{display:block}

/* ===== Lov3ly ambient: cánh hoa rơi + mở trang mượt ===== */
.lv-ambient{position:fixed; inset:0; pointer-events:none; z-index:4; overflow:hidden}
.lv-ambient span{position:absolute; top:-6vh; opacity:0; animation-name:lvFall; animation-timing-function:linear; animation-iteration-count:infinite; will-change:transform,opacity}
@keyframes lvFall{0%{transform:translate3d(0,-6vh,0) rotate(0deg); opacity:0} 8%{opacity:.5} 50%{transform:translate3d(2.6vw,52vh,0) rotate(170deg)} 92%{opacity:.42} 100%{transform:translate3d(-1.6vw,108vh,0) rotate(330deg); opacity:0}}
body{animation:lvPageIn .55s ease both}
@keyframes lvPageIn{from{opacity:0} to{opacity:1}}
@media (prefers-reduced-motion: reduce){ .lv-ambient{display:none} body{animation:none} }