/* BrightMind app shell */
[hidden] { display: none !important; }
.app-body { background: #f6f5ff; padding-bottom: 96px; }
.main { padding-top: 22px; }
.view { animation: none; }
.v-title { font-size: clamp(1.8rem, 5vw, 2.4rem); margin-bottom: 4px; }
.lead-s { margin-bottom: 18px; }
.h-sec { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; margin: 26px 0 14px; }
.h-sec .ic { color: var(--accent); }
.field > label { margin-bottom: 8px; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.94); backdrop-filter: blur(10px); border-bottom: 2px solid var(--line); }
.top-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding-block: 8px; }
.me { display: flex; align-items: center; gap: 10px; background: none; border: 0; cursor: pointer; padding: 4px 8px 4px 4px; border-radius: 18px; font: inherit; text-align: left; min-width: 0; }
.me:hover { background: var(--accent-tint); }
.av { width: 46px; height: 46px; border-radius: 50%; background: #fff; border: 3px solid var(--line); display: grid; place-items: center; flex: none; overflow: hidden; }
.av svg { width: 100%; height: 100%; }
.me-text { display: grid; line-height: 1.15; min-width: 0; cursor: pointer; }
.pills { display: flex; align-items: center; gap: 6px; flex: none; }
.top-stats { margin-left: auto; }
@media (max-width: 600px) {
  .top-row { flex-wrap: wrap; }
  .me-text { order: 3; flex: 0 0 100%; margin: 0; display: flex; align-items: baseline; gap: 8px; padding: 0 4px 2px; }
  .me-text b { font-size: 1.05rem; }
  .me .sw { display: none; }
  .top-stats { margin-left: auto; }
}
.me-text b { color: var(--ink); font-family: var(--font-head); font-size: 1.1rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.me-text small { color: var(--muted); font-weight: 700; }
.me .sw { color: var(--muted); width: 1.1em; height: 1.1em; }
.top-stats { display: flex; align-items: center; gap: 6px; flex: none; }
.me-text small { white-space: nowrap; }
@media (max-width: 430px) { .pill { padding: 5px 9px; } .icon-btn { width: 38px; height: 38px; } .me .sw { display: none; } .av { width: 40px; height: 40px; } }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; font-weight: 800; color: var(--ink); background: #fff; border: 2px solid var(--line); }
.pill.streak .ic { color: #ec4899; } .pill.xp .ic { color: #06b6d4; }
.icon-btn { width: 42px; height: 42px; border-radius: 14px; border: 2px solid var(--line); background: #fff; cursor: pointer; color: var(--muted); display: grid; place-items: center; }
.icon-btn:hover { color: var(--bad); }

/* hero */
.hero-card { background: linear-gradient(120deg, #3b82f6, #6366f1, #a855f7, #ec4899, #6366f1, #3b82f6); background-size: 300% 300%; animation: gradShift 14s ease-in-out infinite; border-radius: 32px; padding: 24px; color: #fff; box-shadow: var(--shadow); position: relative; overflow: hidden; }
.hero-card::after { content: ""; position: absolute; right: -60px; top: -70px; width: 220px; height: 220px; border-radius: 50%; background: rgba(255,255,255,.12); }
.hc-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; position: relative; z-index: 1; }
.hc-date { margin: 0; color: #c7d2fe; font-weight: 700; }
.hero-card h1 { color: #fff; font-size: clamp(1.8rem, 6vw, 2.6rem); margin: 0; }
.sparky-mini { width: 92px; flex: none; background: none; border: 0; cursor: pointer; padding: 0; }
.sparky-mini svg { width: 100%; height: auto; filter: drop-shadow(0 8px 10px rgba(30,27,75,.35)); animation: bob 3.2s ease-in-out infinite; }
.speech-line { position: relative; z-index: 1; margin: 14px 0; background: #fff; color: var(--ink); font-weight: 800; padding: 12px 16px; border-radius: 18px 18px 18px 6px; display: inline-block; max-width: 100%; }
.xpbox { position: relative; z-index: 1; background: rgba(255,255,255,.16); border-radius: 20px; padding: 14px 16px; }
.xp-row { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; font-weight: 800; margin-bottom: 8px; }
.xp-row .ic { vertical-align: -4px; color: #67e8f9; }
.xp-bar { height: 16px; background: rgba(255,255,255,.25); border-radius: 99px; overflow: hidden; }
.xp-bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #67e8f9, #fff); border-radius: 99px; }

/* tiles */
.tiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.tile { border: 0; cursor: pointer; font-family: var(--font-head); font-weight: 600; font-size: 1.05rem; color: #fff; padding: 20px 10px; border-radius: 24px; display: grid; justify-items: center; gap: 10px; box-shadow: 0 6px 0 rgba(0,0,0,.18); transition: transform .12s, box-shadow .12s; }
.tile:active { transform: translateY(4px); box-shadow: 0 2px 0 rgba(0,0,0,.18); }
.tile:hover { filter: brightness(1.06); }
.ti { width: 56px; height: 56px; border-radius: 18px; background: rgba(255,255,255,.25); display: grid; place-items: center; }
.ti .ic { width: 30px; height: 30px; }
.t-english { background: var(--c-english); } .t-math { background: var(--c-math); } .t-science { background: var(--c-science); }
.t-tech { background: var(--c-tech); } .t-geo { background: var(--c-geo); } .t-history { background: var(--c-history); }
@media (max-width: 520px) { .tiles { grid-template-columns: repeat(2, 1fr); } }

.daily { margin-top: 24px; display: flex; align-items: center; gap: 16px; padding: 20px; border-radius: 28px; background: linear-gradient(135deg, #06b6d4, #3b82f6); color: #fff; box-shadow: var(--shadow); flex-wrap: wrap; }
.d-ico { width: 60px; height: 60px; border-radius: 20px; background: rgba(255,255,255,.22); display: grid; place-items: center; flex: none; }
.d-ico .ic { width: 34px; height: 34px; }
.d-body { flex: 1 1 200px; }
.daily h3 { color: #fff; margin: 0 0 4px; }
.daily p { margin: 0; color: #e0f2fe; font-weight: 700; }
.daily .btn { --b: #fff; --bd: #bae6fd; color: #0e7490; }
.daily.done { background: linear-gradient(135deg, #16a34a, #0d9488); }
.assess-card { margin-top: 18px; display: flex; align-items: center; gap: 16px; padding: 18px 20px; border-radius: 28px; background: #fff; box-shadow: var(--shadow); flex-wrap: wrap; }
.assess-card .am { width: 64px; flex: none; }
.assess-card h3 { margin: 0 0 2px; } .assess-card p { margin: 0; font-size: .95rem; } .assess-card > div { flex: 1 1 180px; }

.paths { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
@media (min-width: 700px) { .paths { grid-template-columns: repeat(3, 1fr); } }
.path { border: 0; cursor: pointer; text-align: left; color: #fff; font: inherit; padding: 18px; border-radius: 24px; display: grid; gap: 4px; box-shadow: 0 6px 0 rgba(0,0,0,.18); transition: transform .12s; }
.path:hover { transform: translateY(-3px) rotate(-1deg); }
.path:active { transform: translateY(3px); box-shadow: 0 2px 0 rgba(0,0,0,.18); }
.path .ic { width: 34px; height: 34px; margin-bottom: 6px; }
.path b { font-family: var(--font-head); font-size: 1.1rem; line-height: 1.15; }
.path small { color: rgba(255,255,255,.92); font-weight: 700; }

/* learn setup */
.modes { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 18px; }
.modes button, .seg button { font: inherit; font-family: var(--font-head); font-weight: 600; cursor: pointer; color: var(--ink); background: #fff; border: 2.5px solid var(--line); border-radius: 18px; padding: 12px 6px; display: grid; justify-items: center; gap: 6px; transition: transform .12s, border-color .15s; }
.modes button.on, .seg button.on { border-color: var(--accent); background: var(--accent-tint); color: var(--accent); transform: translateY(-2px); box-shadow: 0 4px 0 var(--accent); }
.modes .ic { width: 28px; height: 28px; }
@media (max-width: 520px) { .modes { grid-template-columns: repeat(2, 1fr); } }
.subjects { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 520px) { .subjects { grid-template-columns: repeat(2, 1fr); } }
.subj { cursor: pointer; border: 2.5px solid var(--line); background: #fff; border-radius: 20px; padding: 14px 8px; display: grid; justify-items: center; gap: 8px; font-family: var(--font-head); font-weight: 600; color: var(--ink); font-size: 1rem; text-align: center; transition: transform .12s; }
.subj .s-ico { width: 48px; height: 48px; border-radius: 16px; }
.subj .s-ico .ic { width: 26px; height: 26px; }
.subj.on { border-color: var(--sc); box-shadow: 0 5px 0 var(--sc); transform: translateY(-3px); }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 6px; }
.chips button { font: inherit; font-weight: 700; font-size: .92rem; border: 2px solid var(--line); background: #fff; color: var(--violet); padding: 6px 14px; border-radius: 999px; cursor: pointer; }
.chips button:hover { background: var(--accent-tint); }

/* generated content */
.out-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.card { background: #fff; border-radius: 28px; padding: 24px; box-shadow: var(--shadow); margin-bottom: 16px; }
.card h2 { margin-bottom: 10px; }
.pt { display: flex; gap: 14px; margin: 14px 0; }
.pt .n { flex: none; width: 36px; height: 36px; border-radius: 12px; background: var(--sc, var(--accent)); color: #fff; font-family: var(--font-head); font-weight: 700; display: grid; place-items: center; }
.pt h4 { margin: 0 0 2px; } .pt p { margin: 0; }
.callout { background: #ecfeff; border: 2.5px dashed #06b6d4; border-radius: 20px; padding: 14px 18px; margin-top: 16px; font-weight: 700; color: #0e7490; }
.story p { font-size: 1.15rem; line-height: 1.75; }
.words { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.words span { background: var(--accent-tint); border-radius: 14px; padding: 8px 14px; font-weight: 700; color: var(--ink); }
.words b { color: var(--accent); }
.loading { text-align: center; padding: 36px 10px; }
.loading svg { width: 120px; margin: 0 auto 10px; animation: flip 1.8s ease-in-out infinite; }
@keyframes flip { 0% { transform: perspective(500px) rotateY(0); } 50% { transform: perspective(500px) rotateY(180deg) scale(1.1); } 100% { transform: perspective(500px) rotateY(360deg); } }
.loading p { font-family: var(--font-head); font-weight: 600; color: var(--ink); font-size: 1.2rem; }

/* quiz */
.qprog { height: 14px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 18px; }
.qprog i { display: block; height: 100%; width: 0; background: var(--grad); border-radius: 99px; transition: width .4s; }
.q-text { font-size: clamp(1.3rem, 4.5vw, 1.8rem); }
.opts { display: grid; gap: 12px; margin-top: 16px; }
.opt { text-align: left; font: inherit; font-family: var(--font-head); font-weight: 600; font-size: 1.1rem; color: var(--ink); background: #fff; border: 3px solid var(--line); border-radius: 20px; padding: 16px 18px; cursor: pointer; display: flex; align-items: center; gap: 12px; box-shadow: 0 4px 0 var(--line); transition: transform .12s; }
.opt:hover { border-color: var(--accent); }
.opt .l { width: 34px; height: 34px; border-radius: 50%; background: var(--accent-tint); color: var(--accent); display: grid; place-items: center; flex: none; font-weight: 700; }
.opt.right { border-color: var(--good); background: #f0fdf4; box-shadow: 0 4px 0 var(--good); }
.opt.right .l { background: var(--good); color: #fff; }
.opt.wrong { border-color: var(--bad); background: #fff1f2; box-shadow: 0 4px 0 var(--bad); }
.opt.wrong .l { background: var(--bad); color: #fff; }
.opt[disabled] { cursor: default; }
.explain { margin-top: 16px; padding: 14px 18px; border-radius: 18px; font-weight: 700; background: var(--accent-tint); color: var(--ink); }
.score-big { font-family: var(--font-head); font-size: 3.4rem; color: var(--accent); line-height: 1; margin: 6px 0; }
.center { text-align: center; }
.row-btns { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 18px; }

/* worksheet */
.ws-item { padding: 14px 0; border-bottom: 2px dashed var(--line); }
.ws-item:last-of-type { border-bottom: 0; }
.ws-item label { font-size: 1.05rem; font-weight: 700; }
.ws-item input { margin-top: 6px; }
.ws-item.right input { border-color: var(--good); background: #f0fdf4; }
.ws-item.wrong input { border-color: var(--bad); background: #fff1f2; }
.ws-fb { font-weight: 800; margin-top: 6px; font-size: .95rem; }
.ws-item.right .ws-fb { color: var(--good); } .ws-item.wrong .ws-fb { color: var(--bad); }

/* chat */
.chat { display: flex; flex-direction: column; background: #fff; border-radius: 28px; box-shadow: var(--shadow); height: calc(100dvh - 210px); min-height: 380px; overflow: hidden; }
.chat-log { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 14px; }
.msg { display: flex; gap: 10px; align-items: flex-end; max-width: 100%; }
.msg.me { justify-content: flex-end; }
.msg .sp { width: 40px; flex: none; }
.bub { padding: 12px 16px; border-radius: 20px 20px 20px 6px; background: var(--grad); color: #fff; font-weight: 600; max-width: 85%; white-space: pre-wrap; overflow-wrap: anywhere; }
.msg.me .bub { background: var(--accent-tint); color: var(--ink); border-radius: 20px 20px 6px 20px; }
.bub .say { display: inline-flex; margin-left: 8px; background: rgba(255,255,255,.25); border: 0; color: #fff; border-radius: 10px; padding: 2px 8px; cursor: pointer; vertical-align: middle; }
.typing i { display: inline-block; width: 8px; height: 8px; margin: 0 2px; border-radius: 50%; background: #fff; animation: dot 1s infinite; }
.typing i:nth-child(2) { animation-delay: .15s; } .typing i:nth-child(3) { animation-delay: .3s; }
@keyframes dot { 50% { transform: translateY(-6px); opacity: .5; } }
.chat-chips { display: flex; gap: 8px; overflow-x: auto; padding: 0 14px 10px; }
.chat-chips button { flex: none; font: inherit; font-weight: 700; font-size: .9rem; border: 2px solid var(--line); background: #fff; color: var(--accent); padding: 8px 14px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.chat-form { display: flex; gap: 10px; padding: 12px 14px; border-top: 2px solid var(--line); }
.chat-form .btn { min-height: 52px; padding: 0 18px; flex: none; }

.chat { position: relative; }
.chat-fs { position: absolute; top: 10px; right: 10px; z-index: 3; width: 42px; height: 42px; border-radius: 14px; border: 2px solid var(--line); background: #fff; color: var(--accent); cursor: pointer; display: grid; place-items: center; }
.chat-fs:hover { background: var(--accent-tint); }
body.chat-full .topbar, body.chat-full .tabbar { display: none; }
body.chat-full .app-body, body.app-body.chat-full { padding-bottom: 0; }
body.chat-full .main { padding-top: 0; width: 100%; }
body.chat-full .chat { position: fixed; inset: 0; z-index: 60; height: 100dvh; border-radius: 0; }
body.chat-full .chat-log { padding-top: 62px; }

/* games */
.game-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 520px) { .game-cards { grid-template-columns: 1fr; } }
.gcard { text-align: left; border: 0; cursor: pointer; color: #fff; border-radius: 28px; padding: 24px; box-shadow: 0 7px 0 rgba(0,0,0,.2); font: inherit; transition: transform .15s; }
.gcard:hover { transform: translateY(-4px) rotate(-1deg); }
.gcard h3 { color: #fff; margin: 12px 0 4px; } .gcard p { margin: 0; color: rgba(255,255,255,.92); font-weight: 600; }
.g1 { background: linear-gradient(135deg, #16a34a, #0d9488); } .g2 { background: linear-gradient(135deg, #ec4899, #8b5cf6); }
.gi { width: 60px; height: 60px; border-radius: 20px; background: rgba(255,255,255,.25); display: grid; place-items: center; }
.gi .ic { width: 32px; height: 32px; }
.g-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.g-head .pill b { color: var(--accent); }
.g-head h2 { font-size: clamp(1.3rem, 6vw, 1.8rem); }
.pop-q { text-align: center; font-family: var(--font-head); font-weight: 700; font-size: clamp(2.2rem, 9vw, 3.4rem); color: var(--ink); margin: 6px 0; }
.pop-field { position: relative; height: 340px; border-radius: 28px; background: linear-gradient(180deg, #e0f2fe, #ede9fe); overflow: hidden; box-shadow: inset 0 0 0 3px #fff; touch-action: manipulation; }
.bubble-pop { position: absolute; width: 84px; height: 84px; border-radius: 50%; border: 0; cursor: pointer; font-family: var(--font-head); font-weight: 700; font-size: 1.9rem; color: #fff; box-shadow: inset -8px -10px 18px rgba(0,0,0,.16), inset 8px 8px 14px rgba(255,255,255,.35), 0 8px 14px rgba(30,27,75,.2); }
.timer { height: 12px; background: var(--line); border-radius: 99px; overflow: hidden; margin: 8px 0; }
.timer i { display: block; height: 100%; width: 100%; background: var(--good); transform-origin: left; }
.mem { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; perspective: 900px; }
.mcard { aspect-ratio: 1; border: 0; padding: 0; background: none; cursor: pointer; position: relative; transform-style: preserve-3d; }
.mcard > span { position: absolute; inset: 0; border-radius: 20px; display: grid; place-items: center; backface-visibility: hidden; }
.mcard .back { background: var(--grad); color: #fff; box-shadow: 0 5px 0 #3730a3; }
.mcard .back .ic { width: 40%; height: 40%; opacity: .6; }
.mcard .front { background: #fff; border: 3px solid var(--line); transform: rotateY(180deg); color: #fff; }
.mcard .front .ic { width: 52%; height: 52%; }
.mcard.done .front { border-color: var(--good); box-shadow: 0 0 0 4px rgba(22,163,74,.25); }

/* progress */
.pg-tot { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.pg-tot > div { background: #fff; border-radius: 22px; padding: 14px 8px; text-align: center; box-shadow: var(--shadow); display: grid; justify-items: center; gap: 2px; }
.pg-tot .ic-wrap { width: 40px; height: 40px; border-radius: 14px; background: var(--accent-tint); color: var(--accent); display: grid; place-items: center; }
.pg-tot b { font-family: var(--font-head); font-size: 1.6rem; color: var(--ink); line-height: 1.1; }
.pg-tot small { font-weight: 700; color: var(--muted); }
@media (min-width: 700px) { .pg-tot { grid-template-columns: repeat(6, 1fr); } }
.pg-card h3 { margin-bottom: 14px; }
.pg-row { display: flex; align-items: center; gap: 14px; margin: 14px 0; }
.pg-row .s-ico { width: 46px; height: 46px; border-radius: 15px; }
.pg-row .s-ico .ic { width: 24px; height: 24px; }
.pg-main { flex: 1; min-width: 0; }
.pg-top { display: flex; justify-content: space-between; gap: 8px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.pg-top span { color: var(--muted); font-size: .9rem; }
.pg-bar { height: 14px; border-radius: 99px; background: var(--line); overflow: hidden; }
.pg-bar i { display: block; height: 100%; border-radius: 99px; min-width: 0; transition: width .6s; }

/* trophies */
.trophies { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
@media (max-width: 560px) { .trophies { grid-template-columns: repeat(2, 1fr); } }
.troph { background: #fff; border-radius: 24px; padding: 18px 12px; text-align: center; box-shadow: var(--shadow); }
.troph .tb { width: 68px; height: 68px; border-radius: 50%; margin: 0 auto 10px; display: grid; place-items: center; background: var(--tc, var(--accent)); color: #fff; }
.troph .tb .ic { width: 34px; height: 34px; }
.troph h4 { margin: 0 0 2px; font-size: 1.05rem; } .troph p { margin: 0; font-size: .85rem; line-height: 1.35; }
.troph.locked { box-shadow: none; border: 2.5px dashed var(--line); background: transparent; }
.troph.locked .tb { background: var(--line); color: var(--muted); }
.troph.locked h4, .troph.locked p { opacity: .6; }

/* tab bar */
.tabbar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: flex; justify-content: space-around; gap: 4px; padding: 8px 10px calc(8px + env(safe-area-inset-bottom)); background: rgba(255,255,255,.96); backdrop-filter: blur(10px); border-top: 2px solid var(--line); }
.tabbar button { flex: 1; max-width: 120px; border: 0; background: none; cursor: pointer; font: inherit; font-weight: 800; font-size: .78rem; color: var(--muted); display: grid; justify-items: center; gap: 2px; padding: 6px 4px; border-radius: 16px; }
.tabbar .ic { width: 26px; height: 26px; }
.tabbar button.on { color: var(--accent); background: var(--accent-tint); }

/* onboarding */
.onboard { min-height: 100vh; background: var(--grad); display: grid; place-items: center; padding: 70px 16px 40px; }
.ob-card { width: min(480px, 100%); background: #fff; border-radius: 32px; padding: 30px 26px; box-shadow: 0 30px 60px rgba(30,27,75,.35); }
.ob-card .sp { width: 90px; margin: -76px auto 8px; display: block; filter: drop-shadow(0 8px 10px rgba(30,27,75,.25)); }
.ob-card h1 { text-align: center; font-size: 1.9rem; } .ob-card .sub { text-align: center; }
.seg { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.avatars { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; padding: 6px 4px; }
.avatars button { aspect-ratio: 1; padding: 3px; border-radius: 50%; border: 3px solid var(--line); background: #fff; cursor: pointer; transition: transform .15s; }
.avatars button svg { width: 100%; height: 100%; }
.avatars button.on { border-color: var(--accent); transform: scale(1.12); box-shadow: 0 0 0 4px rgba(79,70,229,.2); }
.switch-list { display: grid; gap: 10px; margin-top: 14px; text-align: left; }
.sw-item { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 20px; border: 2.5px solid var(--line); background: #fff; cursor: pointer; font: inherit; width: 100%; }
.sw-item.on { border-color: var(--accent); background: var(--accent-tint); }
.sw-item b { font-family: var(--font-head); color: var(--ink); font-size: 1.1rem; display: block; }
.sw-item small { color: var(--muted); font-weight: 700; }
.win-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.win-badges .tb { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; color: #fff; background: var(--tc, var(--accent)); }
.win-badges .tb .ic { width: 28px; height: 28px; }
.bit { position: fixed; width: 10px; height: 14px; border-radius: 3px; pointer-events: none; z-index: 200; }