/* ═══════════════════════════════════════════
   PULSE PLAYER — main.css
   Material You · MD3 token palette
════════════════════════════════════════════ */

:root {
  --md-primary:#e84d3d;
  --md-primary-container:#ffdad5;
  --md-on-primary:#fff;
  --md-on-primary-container:#410002;
  --md-surface:#fffbff;
  --md-surface-1:#fef1ef;
  --md-surface-variant:#f5ddda;
  --md-outline:#857370;
  --md-outline-variant:#d8c2bf;
  --md-on-surface:#201a19;
  --md-on-surface-var:#534340;
  --md-kotlin:#7f52ff;
  --md-kotlin-cont:#ede6ff;
  --md-green:#1d6b4a;
  --md-green-cont:#b7f0cc;
  --elev-1:0 1px 2px rgba(0,0,0,.08),0 1px 3px 1px rgba(0,0,0,.06);
  --elev-2:0 1px 2px rgba(0,0,0,.1),0 2px 6px 2px rgba(0,0,0,.08);
  --elev-3:0 4px 8px 3px rgba(0,0,0,.1),0 1px 3px rgba(0,0,0,.14);
}

/* ── Reset ── */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Roboto',sans-serif;background:var(--md-surface);color:var(--md-on-surface);overflow-x:hidden}

/* ── Ripple ── */
.md-ripple{position:relative;overflow:hidden}
.md-ripple::after{content:'';position:absolute;inset:0;background:radial-gradient(circle,rgba(0,0,0,.12) 0%,transparent 70%);transform:scale(0);opacity:0;transition:transform .4s,opacity .4s}
.md-ripple:active::after{transform:scale(2.5);opacity:1;transition:none}

/* ════════════════════════════════════════════
   NAV
════════════════════════════════════════════ */
nav{position:sticky;top:0;z-index:100;background:rgba(255,251,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--md-outline-variant);box-shadow:var(--elev-1)}
.nav-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem}
.logo{font-family:'Google Sans',sans-serif;font-weight:700;font-size:1.2rem;display:flex;align-items:center;gap:10px;color:var(--md-on-surface);letter-spacing:-.01em;text-decoration:none}
.ecg-canvas{display:block;width:44px;height:20px;flex-shrink:0}
.nav-links{display:flex;align-items:center;gap:.25rem}
.nav-link{color:var(--md-on-surface-var);text-decoration:none;font-size:.9rem;font-weight:500;padding:.45rem .9rem;border-radius:100px;transition:background .2s,color .2s;white-space:nowrap;letter-spacing:.02em}
.nav-link:hover,.nav-link.active{background:var(--md-surface-variant);color:var(--md-on-surface)}

/* Buttons */
.btn-filled{background:var(--md-primary);color:var(--md-on-primary);padding:.55rem 1.3rem;border-radius:100px;font-size:.9rem;font-weight:500;text-decoration:none;display:inline-flex;align-items:center;gap:6px;box-shadow:var(--elev-1);transition:box-shadow .2s,transform .15s;white-space:nowrap;letter-spacing:.02em}
.btn-filled:hover{box-shadow:var(--elev-2);transform:translateY(-1px)}
.btn-label{display:flex;flex-direction:column;align-items:flex-start;line-height:1.2}
.btn-sub{font-size:.65rem;font-weight:400;opacity:.85;letter-spacing:.03em;text-transform:uppercase}
.btn-tonal{background:var(--md-surface-variant);color:var(--md-on-surface-var);padding:.625rem 1.5rem;border-radius:100px;font-size:.875rem;font-weight:500;text-decoration:none;display:inline-flex;align-items:center;gap:7px;border:1px solid var(--md-outline-variant);transition:background .2s,transform .15s}
.btn-tonal:hover{background:var(--md-outline-variant);transform:translateY(-1px)}
.btn-hero{padding:.7rem 1.6rem;font-size:.95rem}

/* Hamburger */
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.4rem;border-radius:8px;color:var(--md-on-surface)}
.nav-toggle:hover{background:var(--md-surface-variant)}
.nav-mobile{display:none;flex-direction:column;gap:.25rem;padding:.75rem 1.5rem 1rem;background:rgba(255,251,255,.97);border-bottom:1px solid var(--md-outline-variant);box-shadow:var(--elev-2);position:sticky;top:57px;z-index:99}
.nav-mobile.open{display:flex}
.nav-mobile .nav-link{padding:.6rem .8rem;border-radius:10px;width:100%}
.nav-mobile .btn-filled{justify-content:center;margin-top:.25rem;border-radius:10px}

/* ════════════════════════════════════════════
   CHIPS
════════════════════════════════════════════ */
.chip-row{display:flex;gap:6px;justify-content:center;flex-wrap:wrap;margin-bottom:1.5rem;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
.chip{display:inline-flex;align-items:center;gap:5px;font-size:.75rem;font-weight:500;padding:.3rem .75rem;border-radius:8px;border:1px solid transparent;white-space:nowrap;flex-shrink:0}
.chip-kotlin{background:var(--md-kotlin-cont);color:var(--md-kotlin);border-color:#c9bdff}
.chip-free{background:var(--md-primary-container);color:var(--md-on-primary-container);border-color:#ffb4ac}
.chip-fmt{background:var(--md-surface-variant);color:var(--md-on-surface-var);border-color:var(--md-outline-variant)}

/* ════════════════════════════════════════════
   HERO
════════════════════════════════════════════ */
.hero{padding:3.5rem 1.5rem 3rem;max-width:860px;margin:0 auto;text-align:center}
h1{font-family:'Google Sans',sans-serif;font-weight:700;font-size:clamp(2rem,5.5vw,3.5rem);line-height:1.1;letter-spacing:-.03em;color:var(--md-on-surface);margin-bottom:1rem}
.a-red{color:var(--md-primary)}
.hero-sub{font-size:1rem;color:var(--md-on-surface-var);line-height:1.75;max-width:520px;margin:0 auto 2rem;letter-spacing:.015em}
.hero-btns{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.5rem}

/* ════════════════════════════════════════════
   FAN PORTRAIT SLIDER
════════════════════════════════════════════ */
.fan-slider{max-width:680px;margin:0 auto;padding:0 1rem}
.fan-stage{position:relative;height:360px;display:flex;align-items:center;justify-content:center;user-select:none}
.fan-phone{position:absolute;border-radius:28px;overflow:hidden;border:2px solid var(--md-outline-variant);transition:transform .4s cubic-bezier(.25,.46,.45,.94),opacity .35s,box-shadow .35s;will-change:transform,opacity;cursor:pointer}
.fan-phone img{display:block;width:100%;height:100%;object-fit:cover}
.fan-phone.fp-center{width:175px;height:310px;z-index:3;transform:none;border-color:var(--md-outline);box-shadow:var(--elev-3)}
.fan-phone.fp-left{width:130px;height:240px;z-index:1;transform:translateX(-115px) rotate(-7deg);opacity:.55}
.fan-phone.fp-right{width:130px;height:240px;z-index:1;transform:translateX(115px) rotate(7deg);opacity:.55}
.fan-phone.fp-hidden{width:110px;height:210px;z-index:0;opacity:0;pointer-events:none}
.fan-phone.fp-hidden-left{transform:translateX(-210px) rotate(-14deg)}
.fan-phone.fp-hidden-right{transform:translateX(210px) rotate(14deg)}
.fan-phone-inner{width:100%;height:100%;background:linear-gradient(160deg,#1a1a2e,#0f3460);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px}
.fan-phone-inner i{font-size:26px;color:rgba(255,255,255,.35)}
.fan-phone-inner span{font-size:10px;color:rgba(255,255,255,.3);letter-spacing:.05em}
.fan-caption{text-align:center;margin-top:14px}
.fan-caption-title{font-family:'Google Sans',sans-serif;font-size:1rem;font-weight:600;color:var(--md-on-surface);letter-spacing:.01em}
.fan-caption-sub{font-size:.82rem;color:var(--md-on-surface-var);margin-top:3px;letter-spacing:.015em}
.fan-nav{display:flex;align-items:center;justify-content:center;gap:14px;margin-top:16px}
.fan-arrow{width:32px;height:32px;border-radius:50%;border:1px solid var(--md-outline-variant);background:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--md-on-surface);font-size:15px;transition:background .18s,transform .15s;box-shadow:var(--elev-1)}
.fan-arrow:hover{background:var(--md-surface-1);transform:scale(1.08)}
.fan-pips{display:flex;gap:5px;align-items:center}
.fpip{width:7px;height:7px;border-radius:50%;background:var(--md-outline-variant);transition:background .2s,width .25s;cursor:pointer}
.fpip.active{background:var(--md-primary);width:20px;border-radius:4px}
.fan-note{margin-top:14px;display:flex;align-items:center;justify-content:center;gap:6px;font-size:.7rem;color:var(--md-on-surface-var)}
.fan-note i{color:var(--md-primary);font-size:13px}

/* ════════════════════════════════════════════
   SECTIONS
════════════════════════════════════════════ */
.sec{padding:3.5rem 2rem;max-width:960px;margin:0 auto}
.sec-tag{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:600;padding:.35rem 1rem;border-radius:8px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.9rem;background:var(--md-primary-container);color:var(--md-on-primary-container)}
.sec h2{font-family:'Google Sans',sans-serif;font-weight:700;font-size:clamp(1.75rem,3.2vw,2.5rem);letter-spacing:-.02em;margin-bottom:.6rem;line-height:1.2;color:var(--md-on-surface)}
.sec-sub{color:var(--md-on-surface-var);font-size:1.05rem;line-height:1.8;max-width:540px;margin-bottom:2rem;letter-spacing:.015em}

/* ════════════════════════════════════════════
   FEATURE GRID
════════════════════════════════════════════ */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--md-outline-variant);border-radius:16px;overflow:hidden;box-shadow:var(--elev-1)}
.fc{background:#fff;padding:1.65rem;transition:background .2s}
.fc:hover{background:var(--md-surface-1)}
.fc-ico{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;margin-bottom:.9rem;font-size:19px;background:var(--md-primary-container);color:var(--md-primary)}
.fc h3{font-family:'Google Sans',sans-serif;font-weight:600;font-size:1rem;margin-bottom:.35rem;letter-spacing:.01em}
.fc p{font-size:.88rem;color:var(--md-on-surface-var);line-height:1.65;letter-spacing:.015em}
.fc-pill{display:inline-block;font-size:.62rem;background:var(--md-surface-variant);color:var(--md-on-surface-var);padding:.15rem .55rem;border-radius:8px;margin-top:.45rem;border:1px solid var(--md-outline-variant);letter-spacing:.04em}

/* ════════════════════════════════════════════
   HOW IT WORKS
════════════════════════════════════════════ */
.how-list{display:flex;flex-direction:column}
.how-row{display:flex;gap:1.1rem;padding:1rem 0;border-bottom:1px solid var(--md-outline-variant);align-items:flex-start}
.how-row:last-child{border-bottom:none}
.how-n{width:32px;height:32px;border-radius:50%;background:var(--md-primary-container);display:flex;align-items:center;justify-content:center;font-family:'Google Sans',sans-serif;font-weight:700;font-size:.82rem;color:var(--md-primary);flex-shrink:0;margin-top:1px;border:1.5px solid #ffb4ac}
.how-txt h4{font-family:'Google Sans',sans-serif;font-weight:600;font-size:1rem;margin-bottom:.3rem;letter-spacing:.01em}
.how-txt p{font-size:.9rem;color:var(--md-on-surface-var);line-height:1.65;letter-spacing:.015em}
.tag-inline{display:inline-flex;align-items:center;gap:3px;border-radius:6px;font-size:.62rem;padding:.1rem .45rem;font-weight:600;margin-left:6px;vertical-align:middle}
.tag-free{background:var(--md-green-cont);color:var(--md-green)}
.tag-coin{background:var(--md-primary-container);color:var(--md-on-primary-container)}

/* ════════════════════════════════════════════
   DOWNLOAD CARDS
════════════════════════════════════════════ */
.dl-row{display:flex;gap:1rem;flex-wrap:wrap}
.dl-card{flex:1;min-width:190px;background:#fff;border:1px solid var(--md-outline-variant);border-radius:16px;padding:1.25rem;display:flex;flex-direction:column;align-items:center;text-align:center;gap:.65rem;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .15s,border-color .2s;box-shadow:var(--elev-1);position:relative;overflow:hidden}
.dl-card:hover{transform:translateY(-2px);box-shadow:var(--elev-3);border-color:var(--md-primary)}
.dl-recommended{position:absolute;top:0;left:0;right:0;background:var(--md-primary);color:#fff;font-size:.65rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:.3rem .75rem;display:flex;align-items:center;justify-content:center;gap:5px}
.dl-card:has(.dl-recommended){padding-top:2.25rem;border-color:#ffb4ac}
.dl-card:has(.dl-recommended):hover{border-color:var(--md-primary)}
.dl-sideload-note{font-size:.68rem;color:var(--md-outline);line-height:1.5;display:flex;align-items:flex-start;gap:4px;text-align:left;letter-spacing:.01em;margin-top:-.1rem}
.dl-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px}
.dl-ico-gp{background:#e8f5e9;color:#2e7d32}
.dl-ico-gh{background:var(--md-surface-variant);color:var(--md-on-surface-var)}
.dl-card h3{font-family:'Google Sans',sans-serif;font-size:1rem;font-weight:600;letter-spacing:.01em}
.dl-card p{font-size:.85rem;color:var(--md-on-surface-var);line-height:1.55;letter-spacing:.015em}
.dl-pill{font-size:.75rem;padding:.25rem .75rem;border-radius:8px;font-weight:600;letter-spacing:.04em}
.dp-r{background:var(--md-primary);color:#fff}
.dp-s{background:var(--md-surface-variant);color:var(--md-on-surface-var);border:1px solid var(--md-outline-variant)}

/* ════════════════════════════════════════════
   AD UNIT
════════════════════════════════════════════ */
.ad-wrap{display:flex;flex-direction:column;align-items:center;padding:2rem 1.5rem 0}
.ad-label{font-size:.68rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--md-outline);margin-bottom:.5rem;line-height:1}
.ad-inner{width:100%;max-width:728px;display:flex;justify-content:center}
.ad-box{background:var(--md-surface-1);border:1.5px dashed var(--md-outline-variant);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;color:var(--md-on-surface-var);font-size:.73rem;letter-spacing:.05em;text-transform:uppercase;width:100%;max-width:728px;min-height:90px;padding:1.25rem}
.ad-sub{font-size:.59rem;opacity:.5}

/* ════════════════════════════════════════════
   FOOTER
════════════════════════════════════════════ */
footer{border-top:1px solid var(--md-outline-variant);padding:2.25rem 1.5rem;text-align:center;color:var(--md-on-surface-var);font-size:.82rem;margin-top:3rem;background:var(--md-surface-1)}
.fl{display:flex;gap:1.25rem;justify-content:center;flex-wrap:wrap;margin-bottom:.85rem}
.fl a,.fl a:visited{color:var(--md-on-surface-var);text-decoration:none;transition:color .2s;font-size:.85rem;letter-spacing:.015em}
.fl a:hover{color:var(--md-primary)}
footer a{color:var(--md-on-surface-var);text-decoration:none}
footer a:hover{color:var(--md-primary)}
.divider{height:1px;background:var(--md-outline-variant)}

/* ════════════════════════════════════════════
   RESPONSIVE
════════════════════════════════════════════ */
@media(max-width:680px){
  .nav-links{display:none}
  .nav-toggle{display:flex;align-items:center;justify-content:center}
}
/* Tablets */
@media(max-width:860px){
  .feat-grid{grid-template-columns:repeat(2,1fr)}
}
/* Phones */
@media (max-width: 600px) {
  .feat-grid {
    grid-template-columns: 1fr;
  }
}
@media(max-width:480px){
  .chip-row{flex-wrap:nowrap;justify-content:flex-start;padding:0 1.5rem 6px;margin-left:-1.5rem;margin-right:-1.5rem;width:calc(100% + 3rem)}
  .chip-row::-webkit-scrollbar{height:3px}
  .chip-row::-webkit-scrollbar-thumb{background:var(--md-outline-variant);border-radius:2px}
  .hero{padding:2.5rem 1.25rem 2rem}
  .sec{padding:2.25rem 1.25rem}
  h1{font-size:clamp(1.9rem,8vw,2.6rem)}
  .hero-sub{font-size:.92rem}
  .dl-row{flex-direction:column}
  .btn-hero{width:100%;justify-content:center}
  .hero-btns{flex-direction:column;align-items:center}
  .ad-wrap{padding:1.5rem 1.25rem 0}
  .ad-box{min-height:70px}
  footer{padding:1.5rem 1.25rem}
  .fan-stage{height:280px}
  .fan-phone.fp-center{width:140px;height:248px}
  .fan-phone.fp-left{width:100px;height:186px;transform:translateX(-88px) rotate(-7deg)}
  .fan-phone.fp-right{width:100px;height:186px;transform:translateX(88px) rotate(7deg)}
}
@media(min-width:1024px){
  .hero{max-width:1240px;text-align:left;display:flex;align-items:center;gap:4rem;padding:4.5rem 3rem 4rem}
  .hero-text{flex:1;min-width:0}
  .hero-sub{margin:0 0 2rem;max-width:100%}
  .hero-btns{justify-content:flex-start}
  .chip-row{justify-content:flex-start}
  .fan-slider{flex:0 0 auto;width:540px;padding:0;margin:0}
  .fan-stage{height:460px}
  .fan-phone.fp-center{width:220px;height:390px}
  .fan-phone.fp-left{width:162px;height:300px;transform:translateX(-145px) rotate(-7deg)}
  .fan-phone.fp-right{width:162px;height:300px;transform:translateX(145px) rotate(7deg)}
  .fan-phone.fp-hidden-left{transform:translateX(-270px) rotate(-14deg)}
  .fan-phone.fp-hidden-right{transform:translateX(270px) rotate(14deg)}
  .fan-caption-title{font-size:1.1rem}
  .fan-caption-sub{font-size:.9rem}
  .fan-arrow{width:38px;height:38px;font-size:17px}
}
@media(min-width:1400px){
  .hero{padding:5rem 4rem 4.5rem}
  .fan-slider{width:600px}
  .fan-stage{height:500px}
  .fan-phone.fp-center{width:245px;height:434px}
  .fan-phone.fp-left{width:180px;height:334px;transform:translateX(-160px) rotate(-7deg)}
  .fan-phone.fp-right{width:180px;height:334px;transform:translateX(160px) rotate(7deg)}
  .fan-phone.fp-hidden-left{transform:translateX(-300px) rotate(-14deg)}
  .fan-phone.fp-hidden-right{transform:translateX(300px) rotate(14deg)}
}

/* ════════════════════════════════════════════
   STATIC PAGES (privacy, terms, support)
════════════════════════════════════════════ */
.static-page .sec-sub{max-width:100%}
.sec-sub a{color: var(--md-primary);text-decoration: none;}

.static-body{max-width:860px}
.static-body p{font-size:.95rem;line-height:1.85;color:var(--md-on-surface-var);margin-bottom:1rem;letter-spacing:.015em}
.static-body h3{font-family:'Google Sans',sans-serif;font-size:1.05rem;font-weight:600;color:var(--md-on-surface);margin:2rem 0 .5rem;letter-spacing:.01em;padding-bottom:.4rem;border-bottom:1px solid var(--md-outline-variant)}
.static-body h4{font-family:'Google Sans',sans-serif;font-size:.95rem;font-weight:600;color:var(--md-on-surface);margin:1.25rem 0 .35rem;letter-spacing:.01em}
.static-body ul{padding-left:1.4rem;margin-bottom:1rem}
.static-body ul li{font-size:.93rem;line-height:1.75;color:var(--md-on-surface-var);margin-bottom:.35rem;letter-spacing:.015em}
.static-body a{color:var(--md-primary);text-decoration:none}
.static-body a:hover{text-decoration:underline}

/* Third-party table */
.tp-table{border:1px solid var(--md-outline-variant);border-radius:12px;overflow:hidden;margin:1rem 0 1.5rem;font-size:.85rem}
.tp-row{display:grid;grid-template-columns:1.1fr 1.5fr 1.8fr;gap:0}
.tp-row span{padding:.65rem .9rem;border-bottom:1px solid var(--md-outline-variant);color:var(--md-on-surface-var);line-height:1.5}
.tp-row:last-child span{border-bottom:none}
.tp-head span{background:var(--md-surface-1);font-weight:600;color:var(--md-on-surface);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}
.tp-row a{color:var(--md-primary);text-decoration:none;font-size:.82rem}
.tp-row a:hover{text-decoration:underline}
@media(max-width:600px){
  .tp-row{grid-template-columns:1fr}
  .tp-head span:not(:first-child){display:none}
  .tp-row span{border-bottom:none;padding:.4rem .9rem}
  .tp-row span:last-child{border-bottom:1px solid var(--md-outline-variant);padding-bottom:.65rem}
}

/* ════════════════════════════════════════════
   FAQ / SUPPORT PAGE
════════════════════════════════════════════ */
.faq-group{margin-bottom:2rem}
.faq-category{font-family:'Google Sans',sans-serif;font-size:1rem;font-weight:600;color:var(--md-primary);letter-spacing:.01em;margin-bottom:.75rem;padding-left:.1rem}
.faq-list{display:flex;flex-direction:column;gap:.5rem}
.faq-item{border:1px solid var(--md-outline-variant);border-radius:12px;overflow:hidden;background:#fff;transition:box-shadow .2s}
.faq-item[open]{box-shadow:var(--elev-1)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 1.1rem;cursor:pointer;list-style:none;font-family:'Google Sans',sans-serif;font-weight:500;font-size:.95rem;color:var(--md-on-surface);letter-spacing:.01em;user-select:none}
.faq-q::-webkit-details-marker{display:none}
.faq-q:hover{background:var(--md-surface-1)}
.faq-chevron{flex-shrink:0;font-size:15px;color:var(--md-outline);transition:transform .25s}
.faq-item[open] .faq-chevron{transform:rotate(180deg)}
.faq-a{padding:.1rem 1.1rem 1rem;border-top:1px solid var(--md-outline-variant)}
.faq-a p{font-size:.88rem;line-height:1.75;color:var(--md-on-surface-var);letter-spacing:.015em;margin-top:.65rem;margin-bottom:0}

/* Support CTA box */
.support-cta{margin-top:2.5rem;padding:2rem;background:var(--md-surface-1);border-radius:16px;text-align:center;border:1px solid #ffb4ac}