/* Mobile learner app — designed for ~360–430px wide viewports */
html, body { height: 100%; overflow: hidden; }
body { background: var(--c-surface); font-size: 15px; }
.phone-app { position: relative; height: 100%; display: flex; flex-direction: column; background: var(--c-bg); overflow: hidden; }
.pad { padding: 0 16px; }
.stack-s { display: grid; gap: 10px; align-content: start; }
.center { text-align: center; justify-items: center; }
.small { font-size: 13px; }
.accent { color: var(--c-accent); }
.link { color: var(--c-accent); font-weight: 600; font-size: 13px; }

/* status bar (only inside the emulator — real phones have their own) */
.statusbar { height: 46px; flex-shrink: 0; display: flex; justify-content: space-between; align-items: flex-end; padding: 0 26px 6px 32px; font-weight: 600; font-size: 15px; background: var(--c-surface); color: var(--c-text); z-index: 5; }
.sb-icons { display: flex; gap: 5px; font-size: 16px; }
html:not(.embedded) .statusbar { height: env(safe-area-inset-top, 0px); padding: 0; }
html:not(.embedded) .statusbar > * { display: none; }
.phone-app[data-chrome="dark"] .statusbar { background: var(--c-primary); color: var(--c-on-primary); }
.home-indicator { position: absolute; bottom: 7px; left: 50%; transform: translateX(-50%); width: 130px; height: 5px; border-radius: 3px; background: var(--c-text); opacity: .85; z-index: 20; pointer-events: none; }
html:not(.embedded) .home-indicator { display: none; }
.phone-app[data-chrome="dark"] .home-indicator { background: #fff; }

.screens { flex: 1; position: relative; overflow: hidden; }
.screen { position: absolute; inset: 0; display: flex; flex-direction: column; background: var(--c-bg); }
.screen.in-right { animation: inRight .28s cubic-bezier(.2, .8, .2, 1); }
.screen.in-left { animation: inLeft .28s cubic-bezier(.2, .8, .2, 1); }
.screen.in-fade { animation: fade .3s; }
@keyframes inRight { from { transform: translateX(40%); opacity: .4; } }
@keyframes inLeft { from { transform: translateX(-30%); opacity: .4; } }
.m-scroll { flex: 1; overflow-y: auto; overflow-x: hidden; padding-bottom: 28px; scrollbar-width: none; }
.m-scroll::-webkit-scrollbar { display: none; }
.m-scroll.pad { padding: 0 16px 28px; }

/* tab bar */
.tabbar { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--c-surface); border-top: 1px solid var(--c-line); padding: 6px 0 22px; flex-shrink: 0; z-index: 4; }
html:not(.embedded) .tabbar { padding-bottom: max(8px, env(safe-area-inset-bottom)); }
.tabbar button { display: grid; justify-items: center; gap: 2px; font-size: 11px; color: var(--c-text-faint); position: relative; padding-top: 4px; }
.tabbar i { font-size: 26px; }
.tabbar button.on { color: var(--c-accent); font-weight: 600; }
.tb-badge { position: absolute; top: 0; left: calc(50% + 6px); background: var(--c-accent); color: var(--c-on-accent); font-size: 10px; font-style: normal; font-weight: 700; min-width: 17px; height: 17px; border-radius: 9px; display: grid; place-items: center; border: 2px solid var(--c-surface); }

/* headers */
.m-head { display: grid; grid-template-columns: 44px 1fr 44px; align-items: center; padding: 6px 8px; background: var(--c-surface); border-bottom: 1px solid var(--c-line); flex-shrink: 0; }
.m-head h1 { font-size: 17px; text-align: center; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m-head-r { display: flex; justify-content: flex-end; }
.m-icon { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; font-size: 22px; color: var(--c-text); }
.m-icon.float { position: absolute; top: 10px; background: rgba(255, 255, 255, .92); box-shadow: var(--shadow); z-index: 2; color: #222; }
.m-icon.float.l { left: 12px; }
.m-icon.float.r { right: 12px; }
.m-pct { font-weight: 700; font-size: 13px; color: var(--c-accent); padding-right: 8px; }
.m-top { display: flex; align-items: center; gap: 10px; padding: 8px 12px 8px 16px; background: var(--c-surface); flex-shrink: 0; }
.m-top img { height: 34px; width: auto; max-width: 90px; object-fit: contain; border-radius: 6px; }
.m-top b { flex: 1; font-family: var(--font-heading); font-size: 16px; color: var(--c-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* launcher (phone home screen) */
.screen-launcher { background: radial-gradient(120% 70% at 20% 0%, color-mix(in srgb, var(--c-accent) 70%, #fff) 0%, transparent 60%), linear-gradient(170deg, var(--c-primary), color-mix(in srgb, var(--c-primary) 55%, #000)); }
.launcher { flex: 1; display: flex; flex-direction: column; padding: 18px 18px 22px; color: #fff; }
.widget { background: rgba(255, 255, 255, .16); backdrop-filter: blur(14px); border-radius: 22px; padding: 16px 18px; display: grid; margin-bottom: 26px; }
.widget b { font-size: 46px; font-weight: 300; line-height: 1; }
.widget span { opacity: .85; font-size: 14px; margin-top: 4px; }
.app-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px 10px; }
.app-ic { display: grid; justify-items: center; gap: 6px; font-size: 11px; color: #fff; text-shadow: 0 1px 2px rgba(0, 0, 0, .4); }
.app-ic span { width: 60px; height: 60px; border-radius: 15px; display: grid; place-items: center; font-size: 30px; color: #fff; box-shadow: 0 4px 10px rgba(0, 0, 0, .2); overflow: hidden; }
.app-ic.mine span { background: #fff; animation: wiggle 2.4s ease-in-out infinite; }
.app-ic.mine img { width: 100%; height: 100%; object-fit: cover; }
.app-ic.mine b { font-weight: 600; max-width: 76px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@keyframes wiggle { 0%, 80%, 100% { transform: none; } 85% { transform: rotate(-4deg) scale(1.05); } 90% { transform: rotate(4deg) scale(1.05); } 95% { transform: rotate(-2deg); } }
.launch-hint { margin: auto 0 16px; text-align: center; font-size: 13px; opacity: .9; display: flex; gap: 6px; justify-content: center; align-items: center; }
.dock { display: flex; justify-content: space-around; background: rgba(255, 255, 255, .2); backdrop-filter: blur(16px); border-radius: 28px; padding: 12px; }
.dock span { width: 56px; height: 56px; border-radius: 14px; display: grid; place-items: center; font-size: 28px; color: #fff; }

/* splash */
.screen-splash { background: var(--c-primary); }
.splash { flex: 1; display: grid; place-content: center; justify-items: center; gap: 6px; color: var(--c-on-primary); text-align: center; padding: 24px; animation: fade .5s; }
.splash-logo { height: 120px; width: auto; max-width: 200px; object-fit: contain; margin-bottom: 14px; animation: pop .6s ease-out; }
.splash h1 { color: inherit; font-size: 40px; margin: 0; font-weight: 800; line-height: 1; }
.splash p { opacity: .8; }
.dots { display: flex; gap: 6px; margin-top: 24px; }
.dots span { width: 8px; height: 8px; border-radius: 50%; background: var(--c-accent); animation: blink 1s infinite; }
.dots span:nth-child(2) { animation-delay: .2s; } .dots span:nth-child(3) { animation-delay: .4s; }

/* login */
.screen-login { background: var(--c-surface); }
.login { flex: 1; overflow-y: auto; padding: 8px 22px 28px; display: grid; gap: 10px; align-content: start; text-align: center; }
.login-top { display: flex; justify-content: flex-end; }
.m-lang { border: 1px solid var(--c-line); border-radius: 99px; padding: 4px 8px; background: var(--c-surface); font-size: 13px; font-weight: 600; }
.login-logo { height: 110px; width: auto; max-width: 180px; object-fit: contain; margin: 10px auto 6px; }
.login h1 { font-size: 22px; color: var(--c-primary); margin: 0; }
.login .field { text-align: left; margin-bottom: 4px; }
.m-or { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--c-text-faint); }
.m-or::before, .m-or::after { content: ''; flex: 1; height: 1px; background: var(--c-line); }
.m-err { color: var(--c-bad); font-size: 13px; }

/* home */
.m-greet { padding: 14px 16px 4px; }
.m-greet p { margin: 0; }
.m-greet h2 { font-size: 26px; margin: 0; color: var(--c-primary); }
.m-short { display: grid; grid-template-columns: repeat(4, 1fr); padding: 12px 10px; }
.m-short button { display: grid; justify-items: center; gap: 6px; font-size: 12px; font-weight: 600; }
.m-short span { width: 58px; height: 58px; border-radius: 50%; background: var(--c-soft); color: var(--c-primary); display: grid; place-items: center; font-size: 28px; }
.m-sec { display: flex; justify-content: space-between; align-items: center; padding: 16px 16px 10px; }
.m-sec h3 { margin: 0; font-size: 17px; color: var(--c-primary); }
.m-carousel { display: flex; gap: 12px; overflow-x: auto; padding: 0 16px 4px; scroll-padding: 0 16px; scroll-snap-type: x mandatory; scrollbar-width: none; }
.m-carousel::-webkit-scrollbar { display: none; }
.m-ccard { flex: 0 0 76%; scroll-snap-align: start; background: var(--c-surface); border-radius: var(--radius-lg); overflow: hidden; text-align: left; display: grid; gap: 6px; padding-bottom: 12px; border: 1px solid var(--c-line); }
.m-ccard .cover { aspect-ratio: 16 / 8.5; }
.m-ccard b, .m-ccard span, .m-ccard .progress { margin: 0 12px; }
.m-ccard b { font-size: 15px; }
.m-ccard span { font-size: 12px; color: var(--c-text-muted); }
.m-ecard { flex-basis: 62%; }
.live { color: var(--c-bad); font-style: normal; font-weight: 700; }
.m-row-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 14px 16px 0; }
.m-row-btns .btn { border-radius: var(--radius); padding: 13px; }

/* lists */
.m-list { display: grid; gap: 10px; padding: 0 16px; }
.m-crow { display: flex; gap: 12px; align-items: center; text-align: left; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 10px; }
.m-crow > div { display: grid; gap: 3px; flex: 1; min-width: 0; }
.m-crow b { font-size: 14px; }
.m-crow span { font-size: 12px; color: var(--c-text-muted); }
.m-crow .pill { justify-self: start; }
.m-thumb { width: 74px; flex-shrink: 0; aspect-ratio: 1; border-radius: var(--radius-sm); }
.m-thumb::after { display: none; }
.m-thumb2 { width: 54px; height: 54px; flex-shrink: 0; border-radius: var(--radius-sm); background: var(--c-soft); color: var(--c-primary); display: grid; place-items: center; font-size: 28px; }
.star { color: var(--c-highlight); }
.m-seg { display: grid; grid-auto-flow: column; background: var(--c-surface); border-bottom: 1px solid var(--c-line); flex-shrink: 0; }
.m-seg button { padding: 12px; font-weight: 600; font-size: 14px; color: var(--c-text-muted); border-bottom: 2.5px solid transparent; }
.m-seg button.on { color: var(--c-primary); border-color: var(--c-accent); }
.m-seg.in { margin: 14px 0; }
.m-search { display: flex; gap: 8px; align-items: center; margin: 14px 16px 10px; background: var(--c-surface); border: 1.5px solid var(--c-line); border-radius: 99px; padding: 0 14px; }
.m-search input { border: 0; outline: 0; flex: 1; padding: 10px 0; background: transparent; min-width: 0; }
.m-chips { display: flex; gap: 8px; overflow-x: auto; padding: 0 16px 14px; scrollbar-width: none; }
.m-chips .chip { padding: 6px 12px; font-size: 13px; }

/* course */
.no-head { padding-top: 0; }
.m-cover { position: relative; }
.m-cover .cover { aspect-ratio: 16 / 10; }
.m-title { font-size: 21px; color: var(--c-primary); margin: 2px 0 0; }
.m-ch { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius); margin-bottom: 10px; overflow: hidden; }
.m-ch summary { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 12px 14px; list-style: none; font-weight: 600; cursor: pointer; }
.m-ch summary::-webkit-details-marker { display: none; }
.m-ch summary span { display: grid; }
.m-ch summary small { font-weight: 500; color: var(--c-accent); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
.m-ch summary b { font-size: 12px; color: var(--c-text-muted); }
.m-lesson { display: flex; gap: 10px; align-items: center; width: 100%; text-align: left; padding: 10px 14px; border-top: 1px solid var(--c-line); font-size: 14px; }
.m-lesson > i:first-child { font-size: 20px; color: var(--c-primary); }
.m-lesson span { flex: 1; display: grid; }
.m-lesson small { font-size: 11px; color: var(--c-text-muted); }
.m-lesson.done > i:first-child { color: var(--c-text-faint); }
.m-certrow { display: flex; gap: 10px; align-items: center; width: 100%; text-align: left; padding: 12px 14px; border-radius: var(--radius); border: 1.5px dashed var(--c-accent); font-weight: 600; }
.m-certrow > i:first-child { font-size: 28px; color: var(--c-accent); }
.m-certrow span { flex: 1; display: grid; }
.m-certrow small { font-weight: 400; font-size: 12px; color: var(--c-text-muted); }
.m-ticks { padding-left: 18px; }
.m-ticks li { margin-bottom: 6px; }
.m-facts { display: grid; gap: 6px; font-size: 14px; color: var(--c-text-muted); }
.m-facts span { display: flex; gap: 8px; align-items: center; }
.m-foot { padding: 10px 16px 26px; background: var(--c-surface); border-top: 1px solid var(--c-line); flex-shrink: 0; }
.m-foot.row { display: flex; gap: 8px; }
.m-foot.row .input { border-radius: 99px; }

/* lesson players tuned for mobile */
.screen .lesson { gap: 14px; margin-top: 8px; }
.screen .lesson-body { font-size: 15px; }
.screen .vcontrols { gap: 0; padding: 6px; }
.screen .vbtn { width: 30px; height: 30px; font-size: 16px; }
.screen .vbtn[data-act="back"], .screen .vbtn[data-act="fwd"] { display: none; }
.screen .vbig { width: 60px; height: 60px; font-size: 24px; }
.screen .slide { aspect-ratio: 4 / 3.4; padding: 18px; }
.screen .slide h3 { font-size: 22px; }
.screen .slide p { font-size: 14px; }
.screen .narr { padding: 6px 10px; }
.screen .flashcards { grid-template-columns: 1fr 1fr; gap: 10px; }
.screen .flashcard, .screen .fc-inner { min-height: 140px; }
.screen .fc-front, .screen .fc-back { font-size: 13px; padding: 12px; }
.screen .quiz-card { padding: 16px; border-radius: var(--radius); }
.screen .quiz-q { font-size: 17px; }
.screen .choice { padding: 12px; font-size: 14px; }
.screen .quiz-actions .btn { flex: 1; }
.screen .lesson-complete .btn { width: 100%; }
.screen .scale label span { width: 32px; height: 32px; }
.locked-cert .certificate { filter: grayscale(.8); opacity: .5; }
.m-rules { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; font-size: 14px; }
.m-rules li { display: flex; gap: 8px; align-items: center; color: var(--c-text-muted); }
.m-rules li i { font-size: 20px; }
.m-rules li.ok { color: var(--c-text); }
.m-rules li.ok i { color: var(--c-ok); }
.screen .idcard { margin: 18px auto 6px; }

/* meet */
.screen-meet { background: #111318; }
.meet { flex: 1; display: flex; flex-direction: column; color: #fff; padding: 14px; gap: 14px; }
.meet-top { display: flex; gap: 8px; align-items: center; font-size: 14px; }
.meet-main { flex: 1; border-radius: 18px; background: #23262E; display: grid; place-content: center; justify-items: center; gap: 10px; box-shadow: inset 0 0 0 3px var(--c-accent); }
.meet-strip { display: flex; gap: 10px; justify-content: center; }
.meet-bar { display: flex; justify-content: center; gap: 14px; padding-bottom: 14px; }
.rb { width: 52px; height: 52px; border-radius: 50%; background: #2C3039; color: #fff; font-size: 22px; display: grid; place-items: center; }
.rb.on { background: #fff; color: #111; }
.rb.end { background: var(--c-bad); }

/* forum */
.m-post { display: grid; gap: 6px; text-align: left; background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 12px; }
.m-post p { margin: 0; }
.m-post-h { display: flex; gap: 10px; align-items: center; }
.m-post-h span:last-child { display: grid; font-size: 13px; }
.m-post-h small { color: var(--c-text-muted); font-size: 11px; }
.m-reacts { display: flex; gap: 18px; color: var(--c-text-muted); font-size: 14px; padding: 6px 0; border-top: 1px solid var(--c-line); border-bottom: 1px solid var(--c-line); }
.m-reacts button.liked { color: var(--c-accent); }
.m-comment { background: var(--c-surface); border-radius: var(--radius-sm); padding: 10px 12px; font-size: 14px; border: 1px solid var(--c-line); }
.m-comment p { margin: 2px 0 0; }

/* notifications */
.m-notes { display: grid; }
.m-note { display: flex; gap: 12px; padding: 14px 16px; border-bottom: 1px solid var(--c-line); background: var(--c-surface); }
.m-note.unread { background: color-mix(in srgb, var(--c-accent) 6%, var(--c-surface)); }
.m-note p { margin: 2px 0; font-size: 13px; color: var(--c-text-muted); }
.m-note small { font-size: 11px; color: var(--c-text-faint); }
.m-note b { font-size: 14px; }
.note-i { width: 42px; height: 42px; flex-shrink: 0; border-radius: 50%; background: var(--c-primary-08); color: var(--c-primary); display: grid; place-items: center; font-size: 22px; }

/* me */
.m-pill { display: grid; grid-template-columns: 1fr 1fr; background: var(--c-bg); border-radius: 99px; padding: 3px; }
.m-pill button { padding: 7px 4px; border-radius: 99px; font-size: 12.5px; font-weight: 600; color: var(--c-text-muted); white-space: nowrap; }
.m-pill button.on { background: var(--c-primary); color: var(--c-on-primary); }
.m-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 16px 0 12px; }
.m-stats div { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius); padding: 12px; display: grid; }
.m-stats i { font-size: 24px; color: var(--c-accent); }
.m-stats b { font: 700 30px/1.1 var(--font-display); color: var(--c-primary); }
.m-stats span { font-size: 12px; color: var(--c-text-muted); }
.m-card-btn { display: flex; gap: 12px; align-items: center; width: 100%; text-align: left; background: var(--c-primary); color: var(--c-on-primary); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; }
.m-card-btn > i:first-child { font-size: 30px; }
.m-card-btn span { flex: 1; display: grid; }
.m-card-btn small { opacity: .75; }
.m-menu { background: var(--c-surface); border: 1px solid var(--c-line); border-radius: var(--radius); overflow: hidden; }
.m-menu button { display: flex; gap: 12px; align-items: center; width: 100%; text-align: left; padding: 14px; border-bottom: 1px solid var(--c-line); font-weight: 500; }
.m-menu button:last-child { border-bottom: 0; }
.m-menu button > i:first-child { font-size: 24px; color: var(--c-primary); }
.m-menu span { flex: 1; display: grid; }
.m-menu small { font-size: 12px; color: var(--c-text-muted); font-weight: 400; }
.m-menu .danger, .m-menu .danger i { color: var(--c-bad) !important; }
.m-profile { display: grid; justify-items: center; gap: 4px; padding: 20px 0; }
.m-profile h2 { margin: 6px 0 0; font-size: 20px; }
.m-profile p { margin: 0; }
.m-storage { display: grid; gap: 6px; padding-top: 16px; padding-bottom: 14px; }
.m-days { display: flex; gap: 8px; margin: 12px 0; }
.m-days button { flex: 1; padding: 8px 0; border-radius: var(--radius-sm); border: 1.5px solid var(--c-line); display: grid; justify-items: center; }
.m-days button.on { border-color: var(--c-accent); background: var(--c-accent-12); color: var(--c-accent); }
.m-slots { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* bottom sheet + toast */
.m-sheet-back { position: absolute; inset: 0; z-index: 30; background: rgba(0, 0, 0, .4); display: flex; align-items: flex-end; animation: fade .2s; }
.m-sheet-back.out { opacity: 0; transition: opacity .2s; }
.m-sheet { width: 100%; max-height: 80%; overflow-y: auto; background: var(--c-surface); border-radius: 18px 18px 0 0; padding: 8px 18px 30px; animation: up .25s ease-out; display: grid; gap: 10px; }
@keyframes up { from { transform: translateY(40%); } }
.grab { width: 40px; height: 5px; border-radius: 3px; background: var(--c-line); margin: 0 auto 6px; }
.m-sheet h3 { margin: 4px 0 0; }
.m-sheet p { margin: 0; }
.dl-row { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--c-line); }
.dl-row > i { font-size: 26px; color: var(--c-primary); }
.dl-row span { flex: 1; display: grid; gap: 3px; font-weight: 500; font-size: 14px; }
.dl-row small { font-size: 12px; color: var(--c-text-muted); font-weight: 400; }
.m-toast { position: absolute; left: 16px; right: 16px; bottom: 96px; z-index: 40; background: #1B1B1B; color: #fff; border-radius: 14px; padding: 12px 14px; font-size: 13px; display: flex; gap: 8px; align-items: center; animation: toastIn .25s; box-shadow: var(--shadow-lg); }
.m-toast i { color: var(--c-highlight); font-size: 18px; }
.bot { display: grid; gap: 12px; }
.bot-head { display: flex; gap: 10px; align-items: center; }
.bot-head img { width: 40px; height: 40px; border-radius: 10px; object-fit: cover; }
.bot-head div { display: grid; }
.bot-msgs { display: grid; gap: 8px; max-height: 240px; overflow-y: auto; }
.msg { padding: 10px 12px; border-radius: 14px; font-size: 14px; max-width: 85%; }
.msg.in { background: var(--c-bg); border-bottom-left-radius: 4px; }
.msg.out { background: var(--c-primary); color: var(--c-on-primary); justify-self: end; border-bottom-right-radius: 4px; }
.bot-sugs { display: flex; flex-wrap: wrap; gap: 6px; }
.bot-sugs .chip { font-size: 12px; padding: 6px 10px; }