/* Shared application chrome and iPhone reading layout. Course sources stay independent. */
:root{--safe-top:env(safe-area-inset-top,0px);--safe-bottom:env(safe-area-inset-bottom,0px)}
html{scroll-padding-top:calc(84px + var(--safe-top));-webkit-text-size-adjust:100%}
body{color:var(--ink)}button,input,select,textarea{color:var(--ink)}
.topbar .avatar{display:inline-flex;align-items:center;justify-content:center;background:var(--surface);color:var(--ink);border:1px solid var(--line);width:44px;height:44px;border-radius:50%;font-size:1.2rem}
.topbar .avatar svg{width:23px;height:23px}.topbar .desktop-title{font-weight:650;color:var(--ink)}
.legal-footer{display:none}.mobile-nav a{min-height:48px;gap:5px}.side-bottom a{min-height:36px}
.reader-top{padding-top:calc(12px + var(--safe-top));min-height:calc(64px + var(--safe-top));box-sizing:border-box;border-bottom:1px solid var(--line);isolation:isolate}
.reader-top::before{content:'';position:absolute;inset:0 -20px;background:var(--bg);z-index:-1}
.reader-top>a{min-height:44px;display:inline-flex;align-items:center;color:var(--ink)}
.reader-body{line-height:1.75}.reader-body p,.reader-body li{line-height:1.75}.reader-heading{margin-top:28px}
.reader-body figure{max-width:100%;margin-inline:0}.reader-table-scroll{max-width:100%;overscroll-behavior-x:contain}
.reader-table .table-title{font-size:1.02rem;line-height:1.5;margin:0 0 14px;overflow-wrap:anywhere}
.reader-table.table-compact table{min-width:0;table-layout:auto}.reader-table.table-compact th,.reader-table.table-compact td{min-width:0;white-space:normal;overflow-wrap:anywhere}.reader-table.table-compact .num{white-space:nowrap;width:7ch}
.table-cards,.table-view-toggle{display:none}.reader-body .reader-callout{border-left:0;border-radius:14px}
.settings-page,.legal-page{max-width:680px;margin:auto}.settings-page h1,.account-page h1{font-size:2rem;margin-bottom:28px}.settings-group{margin:30px 0}.settings-group h2{font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 10px}
.settings-row{display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;padding:18px 16px;min-height:60px;border:0;border-bottom:1px solid var(--line);background:var(--surface);color:var(--ink);text-align:left;box-sizing:border-box;text-decoration:none}.settings-row strong{font-weight:550}.settings-row small{display:block;color:var(--muted);line-height:1.5;margin-top:5px}.settings-row:first-of-type{border-radius:14px 14px 0 0}.settings-row:last-child{border-bottom:0;border-radius:0 0 14px 14px}.settings-row:only-child{border-radius:14px}.settings-row select{padding:10px;max-width:135px;background:var(--raised);color:var(--ink);border:1px solid var(--line);border-radius:9px}.settings-row input[type=checkbox]{width:22px;height:22px;accent-color:var(--accent)}.import-row{flex-wrap:wrap}.import-row input{max-width:100%;font-size:.85rem}.legal-page h1{font-size:1.8rem;line-height:1.3}.legal-page h2{font-size:1.15rem;margin-top:32px}.legal-page p{line-height:1.75}.legal-page .table-wrap{overflow:auto}.legal-page table{border-collapse:collapse}.legal-page td,.legal-page th{padding:12px;text-align:left;border-bottom:1px solid var(--line)}
.welcome-page{max-width:440px;margin:36px auto;text-align:center}.welcome-mark{display:grid;place-items:center;background:var(--accent);color:var(--bg);width:64px;height:64px;border-radius:20px;font-size:2rem;font-weight:750;margin:0 auto 28px}.welcome-page h1{font-size:2rem}.welcome-page>p{color:var(--muted);line-height:1.7}.welcome-actions{display:grid;gap:12px;margin:36px 0 20px}.welcome-privacy,.welcome-page nav{font-size:.8rem}.welcome-page nav{display:flex;justify-content:center;gap:20px;margin-top:30px}.auth-nav{display:flex;gap:20px;margin:24px 0}.auth-nav a{min-height:44px;padding:10px 0;color:var(--muted)}.auth-nav a[aria-current]{color:var(--ink);border-bottom:2px solid var(--accent)}.auth-note{font-size:.85rem;color:var(--muted)}.account-page input,.account-page select,.account-page textarea{color:var(--ink);background:var(--surface)}.account-page .back{margin-bottom:18px}.account-status:empty{display:none}.data-reset-dialog{max-width:420px;padding:24px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:18px}.data-reset-dialog::backdrop{background:#0009}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.button,.button.lime{background:var(--accent);color:var(--bg)}.button.secondary,.button.ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.button:disabled{opacity:.65}.muted,.config-note,.notice{color:var(--muted)}.mode-card,.mode-card h2,.mode-card h3,.mode-card p{color:var(--ink)}.mode-card p{color:var(--muted)}
@media(max-width:800px){.topbar{height:calc(60px + var(--safe-top));padding-top:var(--safe-top);box-sizing:border-box}.topbar .streak{display:none}main{padding:24px 20px calc(100px + var(--safe-bottom))}.is-reading main{padding:0 20px calc(104px + var(--safe-bottom))}.reader-bottom{padding:12px 20px calc(12px + var(--safe-bottom));gap:10px}.reader-bottom>.button{min-height:48px}.reader-shell{padding-bottom:16px}.reader-body{font-size:1rem}.reader-body p{margin-block:20px}.reader-heading h1{font-size:1.75rem}.reader-formula{padding:18px;line-height:1.65}.reader-table table{font-size:.875rem}.reader-table th,.reader-table td{padding:12px}.table-cards{display:grid;gap:12px}.table-view-toggle{display:block;margin:0 0 12px auto;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--accent);font-size:.85rem}.table-cards+.reader-table-scroll{display:none}.show-table .table-cards{display:none}.show-table .reader-table-scroll{display:block}.table-record{padding:16px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.table-record h4{font-size:1rem;margin:0 0 14px;line-height:1.5}.table-record dl{margin:0;display:grid;gap:12px}.table-record dl>div{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr);gap:14px}.table-record dt{color:var(--muted);font-size:.85rem;line-height:1.5}.table-record dd{margin:0;line-height:1.5;overflow-wrap:anywhere}.table-record.row-total{border-color:var(--accent)}.welcome-page{margin-top:24px}.reader-top{gap:10px}.reader-top>a{font-size:.8rem}.reader-top .reader-settings{min-width:44px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}