/* Ari Tools — kiểu dáng dùng chung cho 17 trang công cụ.
 *
 * Lấy đúng bộ màu và phông của trang chính. Không nhúng lại toàn bộ stylesheet của
 * index.html (40KB) vào từng trang; chỉ lấy phần các trang công cụ thật sự cần, để
 * 17 trang cùng dùng chung một file đã nằm sẵn trong bộ nhớ đệm.
 */

:root{
  --canvas:#171110;
  --panel:#211917;
  --accent:#F58BAF;
  --accent-hover:#FFA6C2;
  --accent-muted:#7A4257;
  --text-secondary:#B9A9A2;
  --text-primary:#F5EDE8;
  --flow:cubic-bezier(.32,.86,.34,1);
  --e1:cubic-bezier(.22,.61,.36,1);
  --gut:clamp(16px,5vw,80px);
  --f-label:"Be Vietnam Pro",system-ui,sans-serif;
  --f-num:Fraunces,Georgia,serif;
  --line:rgba(245,139,175,.16);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--canvas);color:var(--text-primary);
  font-family:"Be Vietnam Pro",system-ui,sans-serif;font-weight:400;
  font-size:clamp(1rem,.97rem + .15vw,1.06rem);line-height:1.62;
  overflow-x:clip;-webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:Fraunces,Georgia,serif;font-weight:600;line-height:1.1;margin:0;letter-spacing:-.015em}
p{margin:0}
img{max-width:100%;height:auto}
a{color:var(--accent)}
.mono{font-family:var(--f-label);font-weight:500;font-size:.7rem;letter-spacing:.2em;text-transform:uppercase}
.skip{position:absolute;left:-9999px;top:0;background:var(--accent);color:#2a0f1a;padding:12px 18px;z-index:99}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

/* ---------------------------------------------------------------- nav */
.topnav{
  position:fixed;top:0;left:0;right:0;z-index:50;
  display:flex;align-items:center;gap:18px;
  padding:14px var(--gut);
  background:rgba(23,17,16,.82);backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(245,139,175,.1);
}
.topnav .brand{display:flex;align-items:center;gap:11px;margin-right:auto;text-decoration:none;min-height:44px}
.topnav .brand img{width:30px;height:auto;flex:none;display:block;
  filter:drop-shadow(0 0 10px rgba(245,139,175,.22))}
.topnav .brand b{font-family:Fraunces,serif;font-weight:600;font-size:1.02rem;color:var(--text-primary)}
.topnav .links{display:flex;gap:22px}
.topnav .links a{text-decoration:none;color:var(--text-secondary);font-size:.86rem;transition:color .3s var(--e1)}
.topnav .links a:hover,.topnav .links a[aria-current]{color:var(--text-primary)}
@media (max-width:900px){.topnav .links{display:none}}

/* ---------------------------------------------------------------- buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  background:var(--accent);color:#2a0f1a;text-decoration:none;
  padding:12px 22px;min-height:46px;border-radius:999px;
  font-family:inherit;font-weight:500;font-size:.92rem;
  border:0;cursor:pointer;
  transition:background .6s var(--flow),transform .6s var(--flow),box-shadow .6s var(--flow);
  box-shadow:0 5px 22px rgba(245,139,175,.16);
}
.btn:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 30px rgba(245,139,175,.26)}
.btn.ghost{background:transparent;color:var(--text-primary);border:1px solid rgba(245,139,175,.42);box-shadow:none}
.btn.ghost:hover{background:rgba(245,139,175,.10);border-color:var(--accent)}
.btn.big{padding:16px 30px;min-height:56px;font-size:1rem}
.btn[disabled]{opacity:.45;cursor:default;transform:none;box-shadow:none}
.btn[disabled]:hover{background:var(--accent);transform:none}

/* ---------------------------------------------------------------- layout */
main{padding-top:clamp(84px,12vh,120px)}
.wrap{max-width:820px;margin:0 auto;padding:0 var(--gut) clamp(60px,9vh,100px)}
.wrap.wide{max-width:1120px}

.crumb{display:flex;flex-wrap:wrap;gap:7px;align-items:center;
  font-size:.8rem;color:var(--text-secondary);margin-bottom:22px}
/* link chữ trong dòng vẫn phải đủ 44px để ngón tay bấm trúng */
.crumb a{color:var(--text-secondary);text-decoration:none;
  display:inline-flex;align-items:center;min-height:44px}
.crumb a:hover{color:var(--accent)}
.crumb span[aria-hidden]{opacity:.5}

.thero h1{font-size:clamp(1.9rem,4.6vw,2.9rem)}
.thero .lede{margin-top:14px;color:var(--text-secondary);font-size:1.02rem;max-width:58ch}
.thero .kick{color:var(--accent);margin-bottom:12px}

.note{
  margin-top:20px;padding:13px 16px;border-radius:14px;font-size:.88rem;
  color:var(--text-secondary);background:rgba(245,139,175,.05);
  border:1px solid var(--line);border-left:3px solid rgba(245,139,175,.42);
}
.note strong{color:var(--text-primary);font-weight:500}
.note a{display:inline-block;padding:11px 2px}
.note.warn{background:rgba(255,160,120,.06);border-left-color:rgba(255,170,120,.6)}

/* ---------------------------------------------------------------- the tool card */
.card{
  margin-top:28px;padding:clamp(20px,4vw,30px);
  border-radius:24px;background:var(--panel);border:1px solid var(--line);
}
.card + .card{margin-top:18px}
.card h2{font-size:1.2rem}
.card .hint{margin-top:8px;color:var(--text-secondary);font-size:.88rem}

.fields{display:grid;gap:16px;margin-top:20px}
.fields.two{grid-template-columns:1fr 1fr}
@media (max-width:560px){.fields.two{grid-template-columns:1fr}}
label{display:block;font-size:.86rem;color:var(--text-secondary)}
label .req{color:var(--accent)}
input[type=text],input[type=number],input[type=time],select,textarea{
  width:100%;margin-top:7px;padding:12px 14px;min-height:48px;border-radius:12px;
  background:rgba(12,9,11,.55);border:1px solid rgba(245,139,175,.2);color:var(--text-primary);
  font-family:inherit;font-size:1rem;transition:border-color .4s var(--flow);
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent)}
input[aria-invalid="true"]{border-color:#ff9c9c}
textarea{min-height:96px;resize:vertical}
select{appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--accent) 50%),linear-gradient(135deg,var(--accent) 50%,transparent 50%);
  background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat}

/* chip choices, used everywhere instead of radio buttons */
.chips{display:flex;flex-wrap:wrap;gap:9px;margin-top:9px}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 16px;min-height:44px;border-radius:999px;cursor:pointer;
  background:rgba(12,9,11,.5);border:1px solid rgba(245,139,175,.22);
  color:var(--text-secondary);font-family:inherit;font-size:.88rem;
  transition:all .4s var(--flow);
}
.chip:hover{border-color:rgba(245,139,175,.5);color:var(--text-primary)}
.chip[aria-pressed="true"]{background:var(--accent);color:#2a0f1a;border-color:var(--accent);font-weight:500}
.chip small{display:block;font-size:.72rem;opacity:.8;font-weight:400}

.err{margin-top:14px;padding:11px 14px;border-radius:12px;font-size:.88rem;
  background:rgba(255,110,110,.11);border:1px solid rgba(255,110,110,.34);color:#ffc9c9}
.err:empty{display:none}

/* ---------------------------------------------------------------- result */
.result{margin-top:22px;padding:clamp(20px,4vw,28px);border-radius:22px;
  background:linear-gradient(150deg,rgba(245,139,175,.12),rgba(245,139,175,.03));
  border:1px solid rgba(245,139,175,.3)}
.result:empty{display:none}
.result .big{font-family:var(--f-num);font-size:clamp(2.4rem,8vw,3.4rem);line-height:1;color:var(--accent)}
.result .unit{font-size:.9rem;color:var(--text-secondary);margin-left:6px;font-family:inherit}
.result h3{font-size:1.1rem;margin-top:4px}
.result p{margin-top:10px;color:var(--text-secondary);font-size:.94rem}
/* Các hàng nhãn-giá-trị dùng chung cho cả ô kết quả lẫn ô thẻ thường. Lúc đầu chỉ
   viết cho .result, nên các gợi ý phụ nằm trong .card bị mất hẳn bố cục và nhãn dính
   liền vào giá trị. */
.result .rows,.card .rows{margin-top:18px;display:grid;gap:10px}
.result .row,.card .rows .row{display:flex;justify-content:space-between;gap:14px;align-items:baseline;
  padding-bottom:9px;border-bottom:1px solid rgba(245,139,175,.14)}
.result .row:last-child,.card .rows .row:last-child{border-bottom:0;padding-bottom:0}
.result .row b,.card .rows .row b{font-family:var(--f-num);font-weight:400;color:var(--text-primary);font-size:1.06rem}
.result .row span,.card .rows .row span{color:var(--text-secondary);font-size:.9rem}

/* a horizontal band showing where a value falls */
.scale{margin-top:20px}
.scale .bar{position:relative;height:12px;border-radius:999px;overflow:hidden;display:flex}
.scale .bar i{flex:1;display:block}
.scale .pin{position:absolute;top:-6px;width:3px;height:24px;border-radius:2px;
  background:var(--text-primary);box-shadow:0 0 0 3px rgba(23,17,16,.8);transform:translateX(-50%)}
.scale .tags{display:flex;margin-top:8px;font-size:.68rem;color:var(--text-secondary)}
.scale .tags span{flex:1;text-align:center}

/* ---------------------------------------------------------------- prose blocks */
.prose{margin-top:34px}
.prose h2{font-size:1.32rem;margin-top:30px}
.prose h2:first-child{margin-top:0}
.prose p{margin-top:12px;color:var(--text-secondary)}
.prose ul{margin:12px 0 0;padding-left:20px;color:var(--text-secondary)}
.prose li{margin-top:7px}
.prose code{font-family:ui-monospace,monospace;font-size:.88em;
  background:rgba(245,139,175,.1);padding:2px 6px;border-radius:5px;color:var(--text-primary)}
/* các công thức được viết sẵn theo dòng, nên phải giữ nguyên xuống dòng */
.formula{margin-top:14px;padding:16px 18px;border-radius:14px;
  background:rgba(12,9,11,.5);border:1px solid var(--line);
  font-family:ui-monospace,monospace;font-size:.86rem;color:var(--text-primary);
  overflow-x:auto;line-height:1.75;white-space:pre-wrap}

details{margin-top:10px;border-bottom:1px solid var(--line);padding-bottom:10px}
summary{cursor:pointer;padding:10px 0;min-height:44px;display:flex;align-items:center;
  font-family:Fraunces,serif;font-size:1.04rem;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;color:var(--accent);font-size:1.3rem;font-family:inherit}
details[open] summary::after{content:"−"}
details p{margin-top:6px;color:var(--text-secondary);font-size:.94rem}

/* ---------------------------------------------------------------- CTA + related */
.cta-ari{margin-top:34px;padding:clamp(20px,4vw,28px);border-radius:22px;
  background:var(--panel);border:1px solid rgba(245,139,175,.24)}
.cta-ari h2{font-size:1.24rem}
.cta-ari p{margin-top:10px;color:var(--text-secondary)}
.cta-ari .row{margin-top:20px;display:flex;gap:11px;flex-wrap:wrap}

.related{margin-top:34px}
.related h2{font-size:1.1rem;margin-bottom:14px}
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px}
.tcard{display:block;padding:17px 18px;border-radius:18px;text-decoration:none;
  background:var(--panel);border:1px solid var(--line);
  transition:border-color .5s var(--flow),transform .5s var(--flow)}
.tcard:hover{border-color:rgba(245,139,175,.42);transform:translateY(-3px)}
.tcard .ic{font-size:1.3rem;line-height:1}
.tcard b{display:block;margin-top:9px;font-family:Fraunces,serif;font-weight:600;
  font-size:1rem;color:var(--text-primary)}
.tcard span{display:block;margin-top:5px;color:var(--text-secondary);font-size:.84rem;line-height:1.45}

/* ---------------------------------------------------------------- hub */
.hubsec{margin-top:40px}
.hubsec > h2{font-size:1.3rem;display:flex;align-items:center;gap:10px}
.hubsec > p{margin-top:7px;color:var(--text-secondary);font-size:.92rem}
.hubsec .tgrid{margin-top:16px}

/* ---------------------------------------------------------------- footer */
footer{padding:44px var(--gut) 56px;border-top:1px solid rgba(245,139,175,.11);
  color:var(--text-secondary);font-size:.86rem}
footer .inner{max-width:1120px;margin:0 auto;display:flex;gap:22px;
  flex-wrap:wrap;justify-content:space-between;align-items:flex-start}
footer a{color:var(--accent);text-decoration:none;
  display:inline-block;padding:13px 2px}
footer a:hover{text-decoration:underline}
footer .flogo{width:110px;height:auto;display:block;margin-bottom:12px;opacity:.95}
footer .disc{max-width:1120px;margin:26px auto 0;font-size:.78rem;opacity:.72}

/* the way home, always reachable */
.homefab{position:fixed;left:16px;bottom:16px;z-index:60;
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;min-height:52px;border-radius:999px;text-decoration:none;
  background:var(--accent);color:#2a0f1a;font-weight:500;font-size:.92rem;
  box-shadow:0 14px 34px rgba(0,0,0,.42);
  transition:background .5s var(--flow),transform .5s var(--flow)}
.homefab:hover{background:var(--accent-hover);transform:translateY(-3px)}
.homefab svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.9;
  stroke-linecap:round;stroke-linejoin:round}
@media (max-width:620px){.homefab{padding:12px 18px;font-size:.86rem}}

/* ---------------------------------------------------------------- timers */
.timer{text-align:center;padding:14px 0}
.timer .clock{font-family:var(--f-num);font-size:clamp(3rem,16vw,5rem);line-height:1;
  color:var(--text-primary);font-variant-numeric:tabular-nums}
.timer .state{margin-top:10px;color:var(--accent);font-family:var(--f-label);
  font-weight:500;letter-spacing:.2em;text-transform:uppercase;font-size:.8rem}
.timer .row{margin-top:22px;display:flex;gap:11px;justify-content:center;flex-wrap:wrap}

/* the breathing orb */
.orb-wrap{display:grid;place-items:center;padding:20px 0 10px;min-height:300px}
.orb{width:min(260px,62vw);aspect-ratio:1;border-radius:50%;display:grid;place-items:center;
  background:radial-gradient(circle at 38% 32%,rgba(255,214,230,.95),var(--accent) 48%,#8c4664 100%);
  box-shadow:0 0 60px rgba(245,139,175,.34);
  transform:scale(var(--s,.62));
  transition:transform var(--dur,4s) cubic-bezier(.4,0,.5,1)}
.orb b{font-family:var(--f-label);font-weight:600;font-size:1.06rem;letter-spacing:.14em;
  text-transform:uppercase;color:#2a0f1a;text-align:center}
@media (prefers-reduced-motion: reduce){
  .orb{transition:none}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important}
}

/* counters and trackers */
.big-count{font-family:var(--f-num);font-size:clamp(3.2rem,18vw,5.2rem);line-height:1;
  text-align:center;color:var(--accent);font-variant-numeric:tabular-nums}
.dots{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px;justify-content:center}
.dots button{width:44px;height:44px;border-radius:50%;cursor:pointer;
  border:1px solid rgba(245,139,175,.3);background:rgba(12,9,11,.5);
  color:var(--text-secondary);font-family:inherit;font-size:.82rem;
  transition:all .3s var(--flow)}
.dots button.on{background:var(--accent);border-color:var(--accent);color:#2a0f1a;font-weight:600}

/* the 8-count strip for the rhythm trainer */
.beats{display:grid;grid-template-columns:repeat(8,1fr);gap:7px;margin-top:20px}
.beats i{display:grid;place-items:center;height:52px;border-radius:12px;font-style:normal;
  background:rgba(12,9,11,.5);border:1px solid rgba(245,139,175,.2);
  font-family:var(--f-num);font-size:1.1rem;color:var(--text-secondary);
  transition:background .12s linear,color .12s linear,transform .12s linear}
.beats i.on{background:var(--accent);color:#2a0f1a;transform:scale(1.06)}
.beats i.accent{border-color:rgba(245,139,175,.6)}
@media (max-width:420px){.beats i{height:42px;font-size:.94rem}}

/* star ratings for the flexibility check */
.stars{color:var(--accent);letter-spacing:.14em;font-size:1.1rem}
.stars .off{opacity:.26}

/* month grid for the streak */
.cal{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin-top:16px}
.cal i{display:grid;place-items:center;aspect-ratio:1;border-radius:10px;font-style:normal;
  font-size:.78rem;background:rgba(12,9,11,.45);border:1px solid rgba(245,139,175,.12);
  color:var(--text-secondary)}
.cal i.done{background:rgba(245,139,175,.85);color:#2a0f1a;border-color:var(--accent);font-weight:600}
.cal i.today{border-color:var(--accent);border-width:2px}

.meal{padding:15px 17px;border-radius:16px;background:rgba(12,9,11,.42);
  border:1px solid var(--line);margin-top:11px}
.meal .top{display:flex;justify-content:space-between;gap:12px;align-items:baseline}
.meal .top b{font-family:Fraunces,serif;font-size:1.02rem}
.meal .top span{color:var(--accent);font-family:var(--f-num);font-size:.98rem;white-space:nowrap}
.meal .dish{margin-top:7px;color:var(--text-primary);font-size:.96rem}
.meal .macro{margin-top:6px;color:var(--text-secondary);font-size:.8rem}
.meal .swap{margin-top:10px;background:none;border:1px solid rgba(245,139,175,.3);
  color:var(--text-secondary);border-radius:999px;padding:7px 14px;min-height:40px;
  cursor:pointer;font-family:inherit;font-size:.8rem}
.meal .swap:hover{border-color:var(--accent);color:var(--text-primary)}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------------------------------------------------- lưu trên máy: trạng thái */
.sbar{display:flex;align-items:center;gap:9px;flex-wrap:wrap;
  margin:0 0 20px;padding-bottom:14px;font-size:.78rem;letter-spacing:.02em;
  border-bottom:1px solid rgba(255,255,255,.07)}
.sbar .dot{width:7px;height:7px;border-radius:50%;flex:none}
.sbar .dot.on{background:#7fd6a8;box-shadow:0 0 0 3px rgba(127,214,168,.14)}
.sbar .dot.off{background:#e8a06a;box-shadow:0 0 0 3px rgba(232,160,106,.14)}
.sbar .txt{opacity:.72}
.sbar .who{margin-left:auto;opacity:.86;font-weight:500}
.sbar .sw{opacity:.66;text-decoration:underline;text-underline-offset:3px;
  display:inline-flex;align-items:center;min-height:44px;padding:0 0 0 4px}
.sbar .sw:hover{opacity:1;color:var(--accent)}
@media(max-width:420px){.sbar .who{margin-left:0}}

/* ---------------------------------------------------- bảng cá nhân trang tổng */
.mecard{border:1px solid rgba(255,255,255,.09);border-radius:20px;
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.015));
  padding:clamp(20px,4vw,34px);margin:0 0 clamp(34px,6vw,58px)}
.mecard h2{margin:0 0 10px;font-size:clamp(1.3rem,3.4vw,1.75rem)}
.mecard h3{margin:0 0 8px;font-size:1.02rem;letter-spacing:.01em}
.mecard .lede{margin:0 0 18px;opacity:.78;font-size:.95rem;line-height:1.66;max-width:62ch}
.mecard .hint{margin:0 0 14px}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:0 0 20px}
.metric{padding:15px 14px;border-radius:14px;background:rgba(255,255,255,.035);
  border:1px solid rgba(255,255,255,.06)}
.metric .n{display:flex;align-items:baseline;gap:7px}
.metric b{font-family:var(--f-num);font-size:clamp(1.5rem,5vw,2.05rem);
  line-height:1;font-weight:500}
.metric .unit{font-size:.74rem;opacity:.6}
.metric .lab{display:block;margin-top:7px;font-size:.73rem;opacity:.62;line-height:1.4}
.me-cols{display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,4vw,38px);
  margin-top:26px;padding-top:24px;border-top:1px solid rgba(255,255,255,.07)}
.me-side .chips{margin-top:12px}
.chip.add{border-style:dashed;opacity:.74}
.mecard .sbar{margin:0 0 14px;padding-bottom:0;border-bottom:0}
.mecard .row{display:flex;gap:11px;flex-wrap:wrap;align-items:center}
.mecard .row.small{gap:20px;margin-top:14px}
.lnk{background:none;border:0;padding:0;color:inherit;opacity:.68;cursor:pointer;
  display:inline-flex;align-items:center;min-height:44px;
  font:inherit;font-size:.84rem;text-decoration:underline;text-underline-offset:3px}
.lnk:hover{opacity:1;color:var(--accent)}
.lnk.warn:hover{color:#f0a37e}
.btn.small{padding:11px 18px;font-size:.84rem;min-height:44px}
.btn.small.warn{background:#c9603c;border-color:#c9603c;color:#fff}
.inline-form{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin-top:14px}
.inline-form input{flex:1 1 150px;min-width:0;min-height:44px;padding:11px 14px;
  border-radius:11px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);color:inherit;font:inherit;font-size:.92rem}
.inline-form input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.danger-box{margin-top:16px;padding:16px 17px;border-radius:14px;
  border:1px solid rgba(240,163,126,.36);background:rgba(240,163,126,.06)}
.danger-box p{margin:0 0 6px;font-size:.88rem;line-height:1.6;opacity:.9}
@media(max-width:780px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .me-cols{grid-template-columns:1fr;gap:28px}
}

/* ---------------------------------------------------- Tap BPM: đo nhịp bằng tay */
.bpm-card{text-align:center}
.bpm-stage{display:flex;flex-direction:column;align-items:center;gap:clamp(18px,4vw,26px)}
.bpm-read{line-height:1}
.bpm-num{font-family:var(--f-num);font-size:clamp(4.4rem,22vw,7rem);line-height:.92;
  font-weight:500;letter-spacing:-.02em}
.bpm-unit{margin-top:6px;font-size:.78rem;letter-spacing:.24em;opacity:.55}
.bpm-exact{margin-top:12px;font-size:.88rem;opacity:.7;min-height:1.3em}
.bpm-stab{margin-top:5px;font-size:.76rem;letter-spacing:.06em;opacity:.5;min-height:1.2em}

.bpm-tap{position:relative;display:grid;place-items:center;flex:none;
  width:clamp(180px,58vw,260px);aspect-ratio:1;border-radius:50%;cursor:pointer;
  border:1px solid rgba(245,139,175,.5);color:inherit;
  background:radial-gradient(circle at 50% 38%,rgba(245,139,175,.24),rgba(245,139,175,.07) 62%,transparent);
  font:inherit;font-size:.92rem;letter-spacing:.16em;line-height:1.7;font-weight:500;
  touch-action:manipulation;-webkit-tap-highlight-color:transparent;
  user-select:none;-webkit-user-select:none;
  box-shadow:0 0 0 1px rgba(245,139,175,.1),0 18px 50px -22px rgba(245,139,175,.5)}
.bpm-tap:focus-visible{outline:3px solid var(--accent);outline-offset:6px}
.bpm-tap.flat{background:radial-gradient(circle at 50% 38%,rgba(245,139,175,.42),rgba(245,139,175,.1) 62%,transparent)}
.bpm-tap-txt{position:relative;z-index:2;pointer-events:none}
.bpm-ring{position:absolute;inset:-9px;border-radius:50%;pointer-events:none;
  border:1px solid rgba(245,139,175,.24)}
.bpm-ring.beat{animation:bpmbeat .34s ease-out}
@keyframes bpmbeat{0%{transform:scale(1);opacity:.85}100%{transform:scale(1.13);opacity:0}}
.bpm-wave{position:absolute;inset:0;border-radius:50%;pointer-events:none;
  border:1px solid rgba(245,139,175,.55);animation:bpmwave .6s cubic-bezier(.2,.7,.3,1) forwards}
@keyframes bpmwave{to{transform:scale(1.42);opacity:0}}

.bpm-count{display:flex;gap:7px;flex-wrap:wrap;justify-content:center}
.bpm-count i{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  font-style:normal;font-size:.78rem;font-family:var(--f-num);
  border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);opacity:.5;
  transition:background .09s,color .09s,opacity .09s}
.bpm-count i.on{background:var(--accent);border-color:var(--accent);color:#2a0f1a;opacity:1}

.bpm-alt{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.bpm-alt .alt{padding:14px 8px;border-radius:14px;cursor:pointer;color:inherit;font:inherit;
  border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);min-height:44px}
.bpm-alt .alt b{display:block;font-family:var(--f-num);font-size:1.5rem;font-weight:500;line-height:1}
.bpm-alt .alt span{display:block;margin-top:6px;font-size:.72rem;opacity:.6}
.bpm-alt .alt.on{border-color:var(--accent);background:rgba(245,139,175,.12)}
.bpm-alt .alt[disabled]{opacity:.35;cursor:default}

.bpm-exit{order:-1;align-self:flex-end;background:none;color:inherit;font:inherit;
  font-size:.82rem;cursor:pointer;border:1px solid rgba(255,255,255,.16);
  border-radius:999px;padding:0 18px;min-height:44px;display:inline-flex;align-items:center}
.bpm-stage.full{position:fixed;inset:0;z-index:90;justify-content:center;
  background:var(--bg,#171110);
  padding:max(18px,env(safe-area-inset-top)) max(18px,env(safe-area-inset-right))
          max(18px,env(safe-area-inset-bottom)) max(18px,env(safe-area-inset-left))}
.bpm-stage.full .bpm-tap{width:min(78vw,62vh)}
body.bpm-full{overflow:hidden}
body.bpm-full .topnav,body.bpm-full .homefab{display:none}
@media (prefers-reduced-motion:reduce){
  .bpm-ring.beat,.bpm-wave{animation:none}
  .bpm-count i{transition:none}
}

/* Vòng chạm của Tap BPM nằm giữa màn hình, đúng chỗ nút nổi "Tất cả công cụ" hay
   phủ lên trên điện thoại. Đo được: ở 390px, chạm vào rìa trái vòng là trúng nút
   nổi và rời trang giữa lúc đang đo. Trang này đã có thanh điều hướng và đường dẫn
   ở đầu trang nên bỏ nút nổi đi không mất lối nào. */
body[data-tool="tap-bpm"] .homefab{display:none}

/* ---------------------------------------------------- biểu đồ cột và chuỗi bài */
.bars{display:flex;align-items:flex-end;gap:5px;margin-top:18px;height:132px}
.bar{flex:1 1 0;min-width:0;display:flex;flex-direction:column;justify-content:flex-end;
  align-items:center;height:100%;gap:7px}
.bar i{display:block;width:100%;max-width:34px;min-height:2px;border-radius:5px 5px 2px 2px;
  background:rgba(255,255,255,.09)}
.bar.co i{background:linear-gradient(180deg,var(--accent),rgba(245,139,175,.45))}
.bar span{font-size:.62rem;opacity:.5;white-space:nowrap;font-family:var(--f-num)}

.pbar{height:4px;border-radius:999px;background:rgba(255,255,255,.08);margin-top:22px;overflow:hidden}
.pbar i{display:block;height:100%;width:0;border-radius:999px;background:var(--accent);
  transition:width .3s ease}
@media (prefers-reduced-motion:reduce){.pbar i{transition:none}}

.ends{display:flex;justify-content:space-between;margin-top:5px;font-size:.7rem;opacity:.5}

.seq-row{display:flex;align-items:center;gap:11px;padding:11px 0;
  border-bottom:1px solid rgba(255,255,255,.06)}
.seq-n{flex:none;width:26px;height:26px;border-radius:50%;display:grid;place-items:center;
  font-size:.72rem;font-family:var(--f-num);background:rgba(255,255,255,.06);opacity:.7}
.seq-t{flex:1 1 auto;min-width:0}
.seq-t b{display:block;font-weight:500;font-size:.92rem}
.seq-t em{display:block;font-style:normal;font-size:.72rem;opacity:.55;margin-top:2px}
.seq-b{flex:none;display:flex;gap:4px}
.mini{width:44px;height:44px;border-radius:11px;cursor:pointer;color:inherit;font:inherit;
  font-size:1rem;line-height:1;border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);display:grid;place-items:center}
.mini:hover{border-color:var(--accent)}
.mini[disabled]{opacity:.28;cursor:default}
.mini.warn:hover{border-color:#e0906b;color:#f0a37e}
@media(max-width:520px){
  .seq-row{flex-wrap:wrap}
  .seq-b{width:100%;justify-content:flex-end}
}

.cal.ngay{grid-template-columns:repeat(7,1fr)}
.cal.ngay button{display:grid;place-items:center;aspect-ratio:1;min-height:44px;border-radius:10px;
  font-size:.78rem;font-family:var(--f-num);cursor:pointer;color:inherit;
  border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03)}
.cal.ngay button.done{background:rgba(245,139,175,.85);color:#2a0f1a;
  border-color:var(--accent);font-weight:600}
.cal.ngay button.today{border-color:var(--accent);border-width:2px}

/* Lời báo cho người lần đầu vào Ari Tools. Chỉ hiện một lần, và không chặn gì cả. */
.first-note{display:flex;align-items:center;gap:16px;flex-wrap:wrap;
  margin:0 0 22px;padding:16px 18px;border-radius:14px;
  border:1px solid rgba(245,139,175,.3);background:rgba(245,139,175,.06)}
.first-note p{margin:0;flex:1 1 260px;font-size:.9rem;line-height:1.6;opacity:.88}

/* ---------------------------------------------------- ARI PASS */
.pass-box{margin-top:26px;padding-top:22px;border-top:1px solid rgba(255,255,255,.07)}
.pass-box h3{margin:0 0 8px}
.ma-box{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:14px 0 4px;
  padding:13px 16px;border-radius:13px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.11)}
.ma-box code{font-family:var(--f-num);font-size:1.02rem;letter-spacing:.09em;
  user-select:all;-webkit-user-select:all;word-break:break-all}
.ok-line{margin-top:12px;font-size:.84rem;color:#8fdcb0}
.err-line{margin-top:10px;font-size:.84rem;color:#f0a37e;min-height:1px}
.err-line:empty{margin:0}
.pass-box .inline-form input{letter-spacing:.06em;font-family:var(--f-num);text-transform:uppercase}

/* ---------------------------------------------------- lợi ích của công cụ */
.loiich{margin:14px 0 0;padding:0;list-style:none;display:grid;gap:10px}
.loiich li{position:relative;padding-left:26px;font-size:.94rem;line-height:1.62;
  color:var(--text-secondary)}
.loiich li::before{content:"";position:absolute;left:6px;top:.66em;width:7px;height:7px;
  border-radius:50%;background:var(--accent);opacity:.8}

/* ---------------------------------------------------------------- bảng theo dõi
   Biểu đồ vẽ bằng SVG nội tuyến nên màu sắc phải đặt ở đây, không đặt trong JS:
   như vậy đổi tông cả trang là biểu đồ đổi theo, không phải sửa hai chỗ. */
#theodoi{margin-top:34px}
.tdkhoi{margin-top:22px;padding:22px 22px 18px;border-radius:20px;
  background:var(--panel);border:1px solid var(--line)}
.tdkhoi h3{font-family:var(--f-num);font-size:1.06rem;font-weight:600;margin:0 0 14px}
.tddang,.tdtrong{color:var(--text-secondary);font-size:.9rem;line-height:1.6;margin:0}
.tdchu{margin:12px 0 0;color:var(--text-secondary);font-size:.86rem;line-height:1.6}
.tdcuoi{margin:16px 2px 0;color:var(--text-secondary);font-size:.78rem;line-height:1.6;opacity:.8}

.tdsvg{width:100%;height:auto;display:block;overflow:visible}
.tdke{stroke:rgba(245,139,175,.14);stroke-width:1}
.tdnhan{fill:var(--text-secondary);font-family:var(--f-label);font-size:11px}
.tdduong{fill:none;stroke:var(--accent);stroke-width:2.4;
  stroke-linejoin:round;stroke-linecap:round}
.tdvung{fill:rgba(245,139,175,.10);stroke:none}
.tdcham{fill:var(--accent)}
.tdcham.cuoi{fill:#fff;stroke:var(--accent);stroke-width:2.5}

/* Lịch tập: mỗi cột một tuần, đọc từ trái sang phải là đi tới hiện tại. */
.tdlich{display:flex;gap:4px;align-items:flex-start;overflow-x:auto;padding-bottom:4px}
.tdlich-thu{display:flex;flex-direction:column;gap:4px;flex:none;margin-right:4px}
.tdlich-thu span{height:14px;line-height:14px;font-size:9px;
  color:var(--text-secondary);font-family:var(--f-label);opacity:.7}
.tdlich-tuan{display:flex;flex-direction:column;gap:4px;flex:none}
.tdlich .o{width:14px;height:14px;border-radius:4px;display:block;
  background:rgba(245,139,175,.09);border:1px solid rgba(245,139,175,.10)}
.tdlich .o.co{background:var(--accent);border-color:var(--accent)}
.tdlich .o.mai{background:transparent;border-color:rgba(245,139,175,.05)}

.tdmoc{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.tdm{padding:12px 13px;border-radius:13px;background:rgba(12,9,11,.42);
  border:1px solid var(--line)}
.tdm b{display:block;font-size:.85rem;font-weight:500;color:var(--text-secondary)}
.tdm span{display:block;margin-top:5px;font-size:.76rem;color:var(--text-secondary);opacity:.72}
.tdm.dat{border-color:rgba(245,139,175,.42);background:rgba(245,139,175,.08)}
.tdm.dat b{color:var(--text-primary)}
.tdm.dat span{color:var(--accent);opacity:1}

/* ---------------------------------------------------------------- hình 3D
   Khối này chỉ hiện sau khi người dùng bấm xem, nên phần lớn CSS ở đây chỉ chạy
   một lần trong đời mỗi lượt ghé. Vẫn để cùng tệp vì nó nhỏ. */
.h3dmo{margin-top:16px}
.h3dtai,.h3dloi{color:var(--text-secondary);font-size:.9rem;line-height:1.6;margin:14px 0 0}
.h3dnhac{margin:14px 0 0;color:var(--text-secondary);font-size:.78rem;line-height:1.55;opacity:.82}
.h3ddo{margin:14px 0 0;color:var(--accent);font-size:.82rem;line-height:1.55}

.h3dcot{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;margin-top:16px}
@media(max-width:700px){.h3dcot{grid-template-columns:1fr}}

.h3dkhung{border-radius:16px;overflow:hidden;background:rgba(12,9,11,.5);
  border:1px solid var(--line);aspect-ratio:3/4;max-height:62vh}
.h3dsk{width:100%;height:100%;display:block;touch-action:pan-y;cursor:grab}
.h3dsk:active{cursor:grabbing}
.h3dsk:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}

.h3ddieu{display:flex;flex-direction:column;gap:12px}
.h3do{display:block}
.h3do.nhat{opacity:.62}
.h3dn{display:flex;justify-content:space-between;align-items:baseline;gap:8px;margin-bottom:4px}
.h3dn b{font-weight:500;font-size:.84rem;color:var(--text-secondary)}
.h3dn i{font-style:normal;font-size:.84rem;color:var(--accent);
  font-family:var(--f-num);font-variant-numeric:tabular-nums}
.h3do input[type=range]{width:100%;accent-color:var(--accent)}

.h3dnhom{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.h3dnt{font-size:.78rem;color:var(--text-secondary);min-width:74px}
.h3dcum{display:flex;gap:6px;flex-wrap:wrap}
.h3db{padding:6px 12px;border-radius:999px;font-size:.76rem;cursor:pointer;
  background:rgba(12,9,11,.45);color:var(--text-secondary);
  border:1px solid var(--line);font-family:var(--f-label)}
.h3db.on{background:var(--accent);color:#2a0f1a;border-color:var(--accent)}
.h3dm{width:26px;height:26px;border-radius:50%;cursor:pointer;padding:0;
  border:2px solid transparent;box-shadow:0 0 0 1px var(--line) inset}
.h3dm.on{border-color:var(--accent)}
.h3dm:focus-visible,.h3db:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.h3dduoi{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.h3dduoi .btn[disabled]{opacity:.45;cursor:default}