/* Shared app tokens. Keep component styles here; feature behavior lives in js/pages.
   Typography uses rem so browser text preferences remain effective. */
:root {
    --ink: #272638; --muted: #737187; --primary: #6251cb; --primary-dark: #5040b1;
    --tint: #efecff; --paper: #f5f5fb; --line: #e7e6ef; --danger: #a93c49;
    --text-small: .875rem; --text-support: 1rem; --text-body: 1.125rem;
    --text-heading: 1.5rem; --text-card-title: 1.625rem; --text-title: 2rem;
    --text-score: 2.5rem;
    --radius: 22px; --rail: 256px; --shadow: 0 4px 20px #30285804;
}
* { box-sizing: border-box; }
html { font-size: 100%; scroll-behavior: smooth; }
body { font-size: var(--text-body); margin: 0; color: var(--ink); background: var(--paper); font-family: "Segoe UI", "Microsoft JhengHei", system-ui, sans-serif; line-height: 1.65; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
a { color: var(--primary); text-underline-offset: 4px; }
:focus-visible { outline: 3px solid #8b70e8; outline-offset: 4px; }
[hidden] { display: none !important; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.4; font-weight: 650; }
button:disabled, fieldset:disabled .upload-button { cursor: not-allowed; opacity: .5; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 20px; top: -100px; z-index: 30; padding: 10px 20px; background: var(--ink); color: #fff; border-radius: 8px; }
.skip-link:focus { top: 10px; }

/* Grouped navigation stays scrollable on shorter desktop windows. */
.app-sidebar { position: fixed; inset: 0 auto 0 0; width: var(--rail); z-index: 20; background: #fff; border-right: 1px solid var(--line); padding: 28px 18px 24px; display: flex; flex-direction: column; overflow-y: auto; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); font-size: var(--text-title); letter-spacing: -1px; font-weight: 750; text-decoration: none; padding: 0 9px; line-height: 1.15; min-width: 0; }
.brand>span:last-child { min-width: 0; }
.brand-mark { flex-shrink: 0; display: block; width: 48px; height: 48px; object-fit: contain; }
.brand-name { font-size: 18px; letter-spacing: .02em; line-height: 1.4; }
.brand-product { display: block; letter-spacing: 0; }
.brand small { display: block; font-size: var(--text-small); letter-spacing: .02em; color: var(--muted); margin-top: 7px; font-weight: 600; }
.sidebar-navigation { margin-top: 30px; }
.sidebar-toggle { display: none; }
.nav-group + .nav-group { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 20px; }
.nav-caption { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin: 0 14px 10px; color: #797589; font-size: .75rem; letter-spacing: 1px; font-weight: 650; }
.nav-caption span { font-size: .625rem; letter-spacing: .8px; opacity: .75; }
.nav-group-teacher .nav-caption { color: #4b7a78; }
.nav-group-admin .nav-caption { color: #8f6b3b; }
.nav-group-teacher .app-nav a[aria-current=page] { color: #326763; background: #eaf4f1; }
.nav-group-admin .app-nav a[aria-current=page] { color: #806030; background: #faf1e1; }
.app-nav { display: flex; flex-direction: column; gap: 7px; }
.app-nav a { display: flex; align-items: center; gap: 14px; min-height: 54px; padding: 12px 15px; font-size: var(--text-body); color: #737086; text-decoration: none; border-radius: 13px; font-weight: 550; transition: background .15s; }
.app-nav a:hover { background: #f7f6fd; }
.app-nav a[aria-current=page] { color: var(--primary); background: var(--tint); font-weight: 700; }
.nav-icon, .feature-icon, .service-icon { display: inline-block; width: 21px; height: 21px; flex-shrink: 0; background: currentColor; mask: var(--icon) center / contain no-repeat; -webkit-mask: var(--icon) center / contain no-repeat; }
.icon-home { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m3 10 9-7 9 7v10H3Z M9 20v-7h6v7'/%3E%3C/svg%3E"); }
.icon-mic { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round'%3E%3Crect x='8' y='2' width='8' height='13' rx='4'/%3E%3Cpath d='M5 11a7 7 0 0 0 14 0M12 18v4m-4 0h8'/%3E%3C/svg%3E"); }
.icon-chat { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 4H4a1 1 0 0 0-1 1v12a1 1 0 0 0 1 1h3v4l5-4h8a1 1 0 0 0 1-1V5a1 1 0 0 0-1-1ZM7 9h10M7 13h7'/%3E%3C/svg%3E"); }
.icon-history { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 10a9 9 0 1 1 1 7M3 3v7h7m2-4v6l4 3'/%3E%3C/svg%3E"); }
.icon-user { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round'%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3Cpath d='M4 22v-2a8 8 0 0 1 16 0v2'/%3E%3C/svg%3E"); }
.icon-students { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round'%3E%3Ccircle cx='9' cy='8' r='3'/%3E%3Cpath d='M3 21v-2a6 6 0 0 1 12 0v2M16 5a3 3 0 0 1 0 6m3 10v-2a5 5 0 0 0-2-4'/%3E%3C/svg%3E"); }
.icon-manage { --icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='black' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 3 3 7v5c0 5 9 9 9 9s9-4 9-9V7ZM8 12l3 3 5-6'/%3E%3C/svg%3E"); }
.sidebar-foot { margin-top: auto; padding: 25px 14px 0; font-size: .75rem; display: grid; gap: 12px; overflow-wrap: anywhere; }
.sidebar-note { color: #797589; text-align: center; }
.sidebar-foot a { display: flex; align-items: center; justify-content: center; gap: 6px; color: var(--muted); text-decoration: none; }
.app-frame { margin-left: var(--rail); min-height: 100dvh; display: flex; flex-direction: column; }
.app-header { flex-wrap: wrap; min-height: 86px; padding: 0 42px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); gap: 20px; }
.header-location, .header-actions, .header-account, .connection { display: flex; align-items: center; }
.header-location { flex-wrap: wrap; min-width: 0; gap: 16px; font-size: var(--text-body); color: #858296; }
.header-location strong { color: #454155; font-weight: 500; }
.header-separator { color: #c8c5d4; }
.header-actions { flex-wrap: wrap; gap: 20px; }
.connection { gap: 7px; color: var(--muted); font-size: var(--text-small); white-space: nowrap; }
.status-dot { width: 6px; height: 6px; background: #b4b0c0; border-radius: 50%; }
.status-dot.connected { background: #64a68b; }
.header-account { gap: 9px; font-size: var(--text-support); color: #656174; text-decoration: none; }
#header-account { max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.avatar-small { display: grid; place-content: center; width: 31px; height: 31px; background: #e5dff8; border: 3px solid #fff; border-radius: 50%; color: #7b65b0; font-size: var(--text-support); }
.mobile-brand { display: none; }
.workspace { width: 100%; max-width: 1280px; padding: 36px 42px 24px; margin: 0 auto; flex: 1; }
.app-alerts:has(> :not([hidden])) { margin-bottom: 22px; }
.app-alerts .notice { margin-top: 0; }

/* Overview and shared page headings. */
.page-heading { display: flex; justify-content: space-between; gap: 24px; align-items: center; margin-bottom: 28px; }
.eyebrow { color: #7d6a9e; letter-spacing: 2px; font-size: var(--text-small); font-weight: 650; margin-bottom: 9px; }
.page-heading h1 { font-size: var(--text-title); letter-spacing: .5px; margin-bottom: 9px; overflow-wrap: anywhere; }
.page-heading p:last-child { font-size: var(--text-body); color: var(--muted); margin-bottom: 0; }
.page-symbol { display: grid; place-content: center; width: 62px; height: 62px; border-radius: 20px; color: #a195cc; background: #edebf7; font-family: Georgia,serif; font-size: var(--text-score); flex-shrink: 0; }
.dashboard-heading { margin-bottom: 34px; }
.dashboard-heading .page-symbol { font-size: 3.4375rem; background: none; color: #b5a0e0; transform: rotate(12deg); }
.section-heading { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 15px; align-items: center; }
.section-heading h2 { font-size: var(--text-heading); margin-bottom: 0; }
.dashboard-section-heading { margin-bottom: 17px; }
.quiet-label { font-size: var(--text-support); color: #787285; }
.quick-start-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.feature-card { display: block; padding: 26px 29px 20px; border-radius: 24px; text-decoration: none; overflow: hidden; border: 1px solid #dfd9f5; color: #453965; position: relative; transition: transform .2s, box-shadow .2s; }
.feature-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px #5642780b; }
.pronunciation-card { background: #e9e3fa; }
.conversation-card { background: #e3ecfa; border-color: #d8e3f2; color: #3c567a; }
.feature-card-top, .feature-card-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 15px; }
.feature-card-top { margin-bottom: 22px; }
.feature-icon { width: 31px; height: 31px; }
.feature-tag { font-size: var(--text-small); letter-spacing: 1.6px; font-weight: 650; color: #706080; border: 1px solid #b3a4cf65; padding: 5px 10px; border-radius: 20px; }
.conversation-card .feature-tag { color: #5c718e; border-color: #9fb4d165; }
.feature-card h3 { font-size: var(--text-card-title); letter-spacing: .6px; margin-bottom: 10px; }
.feature-card p { color: #6b5c81; font-size: var(--text-body); line-height: 1.9; margin-bottom: 21px; }
.conversation-card p { color: #5b708e; }
.feature-card-bottom { min-height: 47px; }
.feature-card-bottom strong { font-size: var(--text-body); font-weight: 650; background: #ffffff90; border-radius: 11px; padding: 11px 16px; }
.feature-card-bottom strong span { margin-left: 20px; }
.mini-wave { display: flex; height: 45px; align-items: center; gap: 5px; opacity: .45; margin-right: 9px; }
.mini-wave i { width: 4px; height: 11px; border-radius: 4px; background: #9f82cf; }
.mini-wave i:nth-child(2n) { height: 24px; }
.mini-wave i:nth-child(3n) { height: 35px; }
.mini-wave i:nth-child(5) { height: 44px; }
.quote-art { font-family: Georgia,serif; font-size: 6.25rem; height: 49px; line-height: 1; color: #a9c0df; margin: -12px 10px 0 0; }
.dashboard-bottom { display: grid; grid-template-columns: minmax(0,1fr); gap: 22px; margin-top: 25px; }
.panel { border: 1px solid var(--line); background: #fff; border-radius: var(--radius); padding: 27px; box-shadow: var(--shadow); min-width: 0; }
.section-description { font-size: var(--text-body); color: var(--muted); line-height: 1.9; margin: 10px 0 23px; }
.text-link { font-size: var(--text-support); font-weight: 600; text-decoration: none; }
.practice-totals { display: grid; grid-template-columns: 1fr 1fr; margin: 22px 0 20px; }
.practice-totals>div { padding: 0 22px; border-left: 1px solid var(--line); }
.practice-totals>div:first-child { border: 0; padding-left: 0; }
.practice-totals .total-label { display: block; font-size: var(--text-support); color: var(--muted); margin-bottom: 5px; }
.practice-totals strong { font-size: var(--text-score); line-height: 1.3; font-weight: 600; color: #595175; margin-right: 8px; font-variant-numeric: tabular-nums; }
.practice-totals span:last-child { color: #a29cab; font-size: var(--text-small); }
.daily-tip { position: relative; overflow: hidden; background: #fffaf0; border-color: #efe6d3; }
.tip-label { display: block; color: #8b734f; font-size: var(--text-small); margin-bottom: 13px; }
.daily-tip h2 { font-size: var(--text-card-title); color: #726045; line-height: 1.6; margin-bottom: 12px; }
.daily-tip p { color: #826f53; max-width: 290px; font-size: var(--text-support); line-height: 1.9; margin-bottom: 0; }
.tip-decoration { position: absolute; right: 24px; top: 22px; font-size: 2.625rem; color: #dec796; }

/* Inputs, recording and asynchronous feedback. */
.practice-gate { flex-wrap: wrap; background: #eeeafa; border: 1px solid #e1daf6; border-radius: 16px; display: flex; align-items: center; gap: 17px; padding: 18px 22px; margin-bottom: 24px; }
.gate-icon { color: #8c75bd; font-size: var(--text-title); }
.practice-gate strong { font-size: var(--text-body); color: #61517f; }
.practice-gate p { font-size: var(--text-support); color: #78688e; margin: 3px 0 0; }
.practice-gate .button { margin-left: auto; }
.practice-grid { display: grid; grid-template-columns: minmax(0,1.35fr) minmax(0,1fr); gap: 22px; align-items: start; }
.step-badge { background: #f3f1fa; color: #796b95; font-size: var(--text-small); border-radius: 7px; padding: 5px 9px; white-space: nowrap; }
.section-heading .eyebrow { font-size: var(--text-small); letter-spacing: 1.7px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 11px 17px; border: 1px solid transparent; border-radius: 11px; text-decoration: none; font-size: var(--text-body); font-weight: 600; line-height: 1.5; transition: background .15s; white-space: normal; overflow-wrap: anywhere; max-width: 100%; }
.button-primary, .button-accent { background: var(--primary); color: #fff; }
.button-primary:hover:not(:disabled), .button-accent:hover:not(:disabled) { background: var(--primary-dark); }
.button-secondary { background: #fff; border-color: var(--line); color: #645b79; }
.button-secondary:hover:not(:disabled) { background: #f6f4fc; }
.button-recording { background: #b54760; }
.button-recording:hover:not(:disabled) { background: #973850; }
.notice { border: 1px solid #ebdfc3; background: #fff9ea; color: #897144; padding: 12px 15px; border-radius: 11px; font-size: var(--text-body); line-height: 1.8; margin: 15px 0; overflow-wrap: anywhere; }
.notice-error { background: #fff1f3; border-color: #f1d3da; color: var(--danger); }
label { display: block; font-size: var(--text-body); font-weight: 600; margin-bottom: 8px; color: #625a75; }
textarea, select { min-width: 0; width: 100%; border: 1px solid #e1deeb; border-radius: 11px; background: #fbfaff; color: var(--ink); font-size: var(--text-body); padding: 12px 14px; }
textarea { display: block; resize: vertical; min-height: 94px; line-height: 1.9; }
textarea::placeholder { color: #a49ab4; font-size: inherit; }
select { min-height: 44px; padding-right: 25px; }
textarea+label { margin-top: 21px; }
.field-hint { font-size: var(--text-small); color: #7d6f8b; margin: 8px 0 18px; line-height: 1.8; }
.form-row { display: grid; grid-template-columns: 1fr 1.2fr; gap: 14px; }
.listen-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin: 17px 0; }
.inline-status { font-size: var(--text-support); color: var(--primary); margin: 0; line-height: 1.8; }
.inline-status:not(:empty) { padding-top: 9px; }
audio { display: block; width: 100%; height: 40px; margin: 14px 0; }
.recording-box { border: 1px solid #e7e0f3; background: #f8f5fd; border-radius: 16px; padding: 20px; margin-top: 24px; }
.recording-heading { display: flex; align-items: center; gap: 11px; margin-bottom: 20px; }
.recording-icon { display: grid; place-items: center; background: #ebe3f8; color: #8c73b9; width: 38px; height: 38px; border-radius: 50%; font-size: var(--text-card-title); flex-shrink: 0; }
.recording-heading h3 { font-size: var(--text-body); margin-bottom: 3px; }
.recording-heading p { font-size: var(--text-small); color: #7f6c97; margin: 0; }
.recording-timer { margin-left: auto; font-size: var(--text-heading); font-variant-numeric: tabular-nums; color: #9884b3; letter-spacing: 1px; }
.button-row { display: flex; flex-wrap: wrap; gap: 10px; }
.upload-button { position: relative; margin: 0; overflow: hidden; }
.upload-button input { position: absolute; inset: 0; opacity: 0; width: 100%; cursor: pointer; }
.upload-button:focus-within { outline: 3px solid #8b70e8; outline-offset: 4px; }
.recording-box .field-hint { margin-bottom: 0; }
.file-name { font-size: var(--text-support); margin: 17px 0 0; overflow-wrap: anywhere; }
.form-footer { display: flex; gap: 15px; align-items: center; margin-top: 22px; }
.form-footer .field-hint { margin: 0; flex: 1; }
.feedback-panel { min-height: 415px; }
.empty-state { text-align: center; padding: 30px 5px 0; }
.empty-mark { display: grid; place-items: center; width: 64px; height: 64px; border-radius: 22px; background: #f0edf8; color: #b0a0cc; margin: 0 auto 21px; font-family: Georgia,serif; font-size: var(--text-title); }
.empty-state h3 { font-size: var(--text-body); margin-bottom: 10px; color: #756687; }
.empty-state>p { font-size: var(--text-support); line-height: 1.9; color: #7d6b90; max-width: 280px; margin-left: auto; margin-right: auto; }
.tip { text-align: left; background: #f8f6fc; border-radius: 12px; padding: 16px 18px; margin-top: 27px; }
.tip strong { font-size: var(--text-small); color: #79658f; }
.tip p { font-size: var(--text-support); color: #7d6b90; margin: 6px 0 0; line-height: 1.9; }
.result-overall { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; background: var(--tint); border-radius: 15px; padding: 21px; margin: 23px 0 15px; }
.result-overall span { font-size: var(--text-body); color: var(--primary); }
.result-overall strong { font-size: var(--text-score); line-height: 1; color: var(--primary); font-weight: 650; }
.result-overall small { font-size: var(--text-support); font-weight: 400; margin-left: 4px; }
.score-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 9px; margin: 15px 0 25px; }
.score-item { overflow-wrap: anywhere; background: #f7f5fc; border-radius: 12px; padding: 13px 8px; text-align: center; }
.score-item span { display: block; color: var(--muted); font-size: var(--text-small); }
.score-item strong { font-size: var(--text-card-title); font-weight: 600; }
.result-subheading { font-size: var(--text-body); margin: 20px 0 9px; }
.recognized-text { font-size: var(--text-body); line-height: 1.9; overflow-wrap: anywhere; }
.word-feedback { display: flex; flex-wrap: wrap; gap: 7px; }
.word-chip { overflow-wrap: anywhere; max-width: 100%; padding: 7px 10px; background: #edf5ef; color: #50755b; border: 1px solid #d9e8df; border-radius: 8px; font-size: var(--text-support); }
.word-chip.needs-work { background: #fff3e6; color: #936131; border-color: #eedbbf; }
.word-chip small { font-size: var(--text-small); display: inline-block; margin-left: 5px; opacity: .8; }
.result-note { font-size: var(--text-small); color: var(--muted); margin: 20px 0 0; }
.feedback-copy { font-size: var(--text-body); line-height: 1.95; white-space: pre-wrap; overflow-wrap: anywhere; }
.cefr-badge { font-size: var(--text-body); color: var(--primary); background: var(--tint); padding: 6px 11px; border-radius: 8px; display: inline-block; margin-bottom: 14px; }

/* Journal, account and supporting documents. */
.history-panel { min-height: 380px; }
.history-controls { display: flex; flex-wrap: wrap; gap: 9px; }
.history-controls select { width: 12rem; max-width: 100%; font-size: var(--text-body); }
.compact { padding: 50px 10px; }
.history-item { border-top: 1px solid var(--line); padding: 23px 0; }
.history-item:last-child { padding-bottom: 0; }
.history-item-header { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 15px; margin-bottom: 10px; }
.history-item time { color: var(--muted); font-size: var(--text-support); }
.history-score { font-size: var(--text-support); color: var(--primary); font-weight: 600; }
.history-sentence { font-size: var(--text-body); white-space: pre-wrap; overflow-wrap: anywhere; margin-bottom: 8px; }
.history-item details { font-size: var(--text-body); color: var(--muted); }
.history-item summary { cursor: pointer; color: var(--primary); padding: 10px 0; min-height: 44px; }
.history-item .score-grid, .history-item .result-overall { max-width: 500px; }
.history-item .feedback-copy { color: var(--ink); }
.history-item audio { max-width: 600px; }
.pagination { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 18px; margin-top: 25px; }
.pagination>span { font-size: var(--text-support); color: var(--muted); text-align: center; }
.account-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1.1fr); gap: 22px; align-items: start; }
.account-avatar { width: 66px; height: 66px; display: grid; place-content: center; background: #ede6fb; border-radius: 22px; color: #9375bd; font-size: var(--text-title); margin-bottom: 22px; }
.account-panel h2 { font-size: var(--text-card-title); margin-bottom: 0; overflow-wrap: anywhere; }
.account-panel .section-description { overflow-wrap: anywhere; }
.account-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.account-privacy { border-top: 1px solid var(--line); padding-top: 22px; margin-top: 28px; }
.account-privacy strong { font-size: var(--text-body); }
.account-privacy p { font-size: var(--text-support); color: var(--muted); margin: 8px 0 12px; }
.service-list { list-style: none; padding: 0; margin: 0; }
.service-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; border-top: 1px solid var(--line); padding: 21px 0; }
.service-list li:last-child { padding-bottom: 0; }
.service-list li>div { min-width: 0; overflow-wrap: anywhere; }
.service-icon { color: #9482b1; width: 23px; height: 23px; }
.service-list strong { display: block; font-size: var(--text-body); }
.service-list small { display: block; font-size: var(--text-small); color: var(--muted); margin-top: 3px; }
.service-badge { margin-left: auto; padding: 4px 8px; font-size: var(--text-small); border-radius: 7px; white-space: nowrap; color: #866c40; background: #faf4e6; }
.service-badge.available { background: #ecf6ee; color: #4e775b; }
.document-page { max-width: 800px; margin: 0 auto; padding: 34px; }
.document-page h1 { font-size: var(--text-title); margin-bottom: 16px; }
.document-lead { font-size: var(--text-body); color: var(--muted); }
.document-page h2 { font-size: var(--text-heading); margin-top: 28px; }
.document-page p { font-size: var(--text-body); line-height: 2; }
.document-page .button { margin-top: 16px; }
.document-page code { overflow-wrap: anywhere; }

@media (min-width:1600px) { .workspace { padding-top: 45px; } .feature-card { padding: 31px 33px 26px; } .feature-card h3 { font-size: var(--text-title); } }
@media (max-width:1150px) {
    :root { --rail: 232px; } .brand { font-size: var(--text-card-title); gap: 8px; padding: 0 2px; } .brand small { font-size: var(--text-small); }
    .workspace { padding: 29px 28px 20px; } .app-header { padding: 0 28px; }
    .panel { padding: 22px; } .feature-card { padding: 23px; } .feature-card h3 { font-size: var(--text-card-title); }
    .practice-grid { grid-template-columns: 1fr; gap: 18px; } .section-heading h2 { font-size: var(--text-heading); }
    .form-row { grid-template-columns: 1fr; } .form-footer { flex-direction: column; align-items: stretch; } .recording-heading { flex-wrap: wrap; }
    .feature-tag { font-size: var(--text-small); } .account-grid { grid-template-columns: 1fr; }
}
@media (max-width:900px) and (min-width:701px) {
    :root { --rail: 112px; } .app-sidebar { padding: 24px 10px; } .brand { justify-content: center; } .brand>span:last-child, .nav-caption span { display: none; }
    .sidebar-foot { padding: 20px 0 0; font-size: .6875rem; text-align: center; }
    .nav-caption { justify-content: center; margin: 0 0 8px; font-size: .6875rem; } .nav-group + .nav-group { margin-top: 14px; padding-top: 14px; }
    .app-nav a { flex-direction: column; gap: 6px; padding: 10px 2px; font-size: var(--text-small); min-height: 64px; text-align: center; }
    .header-location { font-size: var(--text-support); } .header-actions { gap: 15px; }
}
@media (max-width:700px) {
    :root { --rail: 0px; } .app-sidebar { position: relative; inset: auto; width: 100%; border: 0; border-bottom: 1px solid var(--line); padding: 16px 20px; display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 16px; }
    .app-sidebar .brand { padding: 0; gap: 9px; } .app-sidebar .brand-mark { width: 36px; height: 36px; } .app-sidebar .brand-name { font-size: .875rem; } .app-sidebar .brand small, .sidebar-foot { display: none; }
    .sidebar-toggle { display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); border-radius: 10px; background: #fff; padding: 10px 12px; font-size: .875rem; color: var(--ink); }
    .sidebar-navigation { display: none; grid-column: 1 / -1; margin-top: 4px; } .sidebar-navigation.is-open { display: block; }
    .sidebar-navigation.is-open + .sidebar-foot { display: grid; grid-column: 1 / -1; margin-top: 0; padding-top: 16px; border-top: 1px solid var(--line); }
    .app-nav { display: flex; gap: 3px; }
    .app-nav a { min-height: 46px; padding: 10px 14px; gap: 12px; font-size: var(--text-support); }
    .nav-icon { width: 20px; height: 20px; }
    .app-frame { padding-bottom: env(safe-area-inset-bottom); min-height: calc(100dvh - 80px); }
    .app-header { min-height: 76px; padding: 12px 21px; background: #f5f5fb; gap: 12px; }
    .header-location { gap: 9px; } .header-location>span:not(.mobile-brand) { display: none; }
    .mobile-brand { display: block; flex-shrink: 0; width: 30px; height: 30px; object-fit: contain; }
    .header-actions { gap: 12px; } .header-account { gap: 5px; } #header-account { max-width: 88px; font-size: var(--text-small); } .connection { font-size: var(--text-small); gap: 5px; }
    .workspace { padding: 25px 20px 16px; }
    .page-heading { margin-bottom: 24px; gap: 12px; } .page-heading h1 { font-size: var(--text-title); } .page-heading p:last-child { font-size: var(--text-body); }
    .page-symbol { width: 48px; height: 48px; font-size: var(--text-title); border-radius: 16px; } .eyebrow { font-size: var(--text-small); letter-spacing: 1.6px; }
    .dashboard-heading .page-symbol { font-size: 2.6875rem; } .dashboard-section-heading { margin-bottom: 14px; } .quiet-label { font-size: var(--text-small); }
    .quick-start-grid { grid-template-columns: 1fr; gap: 15px; } .feature-card { padding: 19px; border-radius: 20px; } .feature-card-top { margin-bottom: 19px; } .feature-tag { display: none; }
    .feature-icon { width: 26px; height: 26px; } .feature-card h3 { font-size: var(--text-card-title); letter-spacing: 0; } .feature-card p { font-size: var(--text-body); margin-bottom: 12px; }
    .feature-card p br { display: none; } .feature-card-bottom strong { font-size: var(--text-body); padding: 10px 11px; } .feature-card-bottom strong span { margin-left: 8px; } .mini-wave, .quote-art { display: none; }
    .dashboard-bottom { grid-template-columns: 1fr; gap: 17px; margin-top: 19px; } .daily-tip h2 br { display: none; } .daily-tip p { max-width: none; padding-right: 12px; }
    .tip-decoration { right: 19px; top: 12px; } .daily-tip { padding-right: 36px; }
    .practice-grid { grid-template-columns: 1fr; gap: 19px; } .feedback-panel { min-height: 0; } .form-row { grid-template-columns: 1fr; }
    .form-footer { flex-direction: column; align-items: stretch; } .section-heading h2 { font-size: var(--text-heading); } .recording-heading { flex-wrap: wrap; }
    .practice-gate { padding: 16px; gap: 12px; flex-wrap: wrap; } .practice-gate .button { width: 100%; margin: 2px 0 0; } .gate-icon { display: none; }
    .history-panel>.section-heading { flex-direction: column; align-items: flex-start; } .history-controls { width: 100%; } .history-controls select { flex: 1; }
    .pagination { gap: 10px; } .pagination .button { padding: 10px 12px; } .history-item-header { gap: 8px; } .history-item time, .history-score { font-size: var(--text-small); }
    .account-grid { gap: 19px; } .document-page { padding: 24px; } .document-page h1 { font-size: var(--text-card-title); }
}
@media (max-width:390px) {
    .workspace { padding-left: 16px; padding-right: 16px; } .app-header { padding: 0 16px; } .connection { display: none; }
    .quick-start-grid { grid-template-columns: 1fr; } .feature-card-top { margin-bottom: 14px; } .feature-tag { display: block; }
    .feature-card h3 { font-size: var(--text-card-title); } .feature-card p { margin-bottom: 10px; } .feature-card-bottom { min-height: 40px; }
    .feature-card-bottom .mini-wave { display: flex; } .quote-art { display: block; } .panel { padding: 19px; }
    .page-heading h1 { font-size: var(--text-card-title); } .form-row { grid-template-columns: 1fr; } .form-footer { flex-direction: column; align-items: stretch; }
    .button-row { gap: 8px; } .button-row .button { flex: 1; padding-left: 12px; padding-right: 12px; } .recording-box { padding: 16px; }
    .recording-heading { gap: 8px; } .recording-timer { font-size: var(--text-body); } .service-list li { gap: 10px; }
}
@media (prefers-reduced-motion:reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }

/* Administration stays within the app shell and uses the shared type scale. */
/* Teacher workspace: a compact directory and a generous reading column. */
body[data-page=teacher] .workspace { max-width: 1480px; }
.teacher-page-heading { align-items: flex-start; }
.teacher-scope { flex-shrink: 0; font-size: .8125rem; color: #4c7870; background: #eaf3ef; border: 1px solid #d9e9e2; padding: 7px 12px; border-radius: 8px; margin-top: 8px; }
.teacher-workspace { display: grid; grid-template-columns: 280px minmax(0,1fr); gap: 28px; align-items: start; }
.student-directory { position: sticky; top: 24px; background: #fff; border: 1px solid var(--line); border-radius: 18px; padding: 22px 16px 14px; min-width: 0; }
.directory-heading { display: flex; justify-content: space-between; gap: 10px; align-items: center; margin: 0 4px 20px; }
.directory-heading h2 { font-size: 1.125rem; margin: 0; }
.count-badge { color: var(--muted); font-size: .75rem; background: #f3f3f8; padding: 3px 9px; border-radius: 6px; white-space: nowrap; }
.student-search-form label { display: block; font-size: .8125rem; color: var(--muted); margin: 0 4px 6px; }
.student-search-field { display: flex; gap: 4px; border: 1px solid #dad7e7; border-radius: 10px; background: #fafafe; padding: 3px; }
.student-search-field:focus-within { border-color: var(--primary); box-shadow: 0 0 0 2px var(--tint); }
.student-search-field input { min-width: 0; width: 100%; border: 0; border-radius: 7px; background: transparent; font-size: .875rem; padding: 10px 8px; color: var(--ink); }
/* The enclosing field provides the input's focus ring; avoid overlapping the adjacent button. */
.student-search-field input:focus { outline: none; box-shadow: none; }
.student-search-submit { border: 0; border-radius: 7px; background: var(--tint); color: var(--primary-dark); font-size: .8125rem; padding: 8px 10px; flex-shrink: 0; }
.student-search-submit:focus-visible { outline-offset: -3px; }
.student-search-meta { display: flex; justify-content: space-between; align-items: center; gap: 6px; margin: 8px 4px 12px; min-height: 32px; font-size: .75rem; color: var(--muted); overflow-wrap: anywhere; }
.text-button { border: 0; background: none; color: var(--primary); font-size: .875rem; padding: 8px 4px; min-height: 40px; white-space: nowrap; }
.text-button:hover { text-decoration: underline; }
.student-search-meta .text-button { font-size: .75rem; }
.student-list { display: grid; gap: 4px; max-height: min(580px, 60dvh); overflow-y: auto; padding: 4px; scrollbar-width: thin; }
.student-row { display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; color: var(--ink); border: 1px solid transparent; background: #fff; border-radius: 10px; padding: 11px 10px; }
.student-row:hover { background: #f7f6fb; }
.student-row[aria-pressed=true] { background: var(--tint); border-color: #d8d1f7; }
.student-row-avatar { display: grid; place-items: center; flex-shrink: 0; width: 34px; height: 34px; border-radius: 10px; background: #f1f0f6; color: #7c748f; font-size: .8125rem; }
.student-row[aria-pressed=true] .student-row-avatar { color: var(--primary); background: #ddd6fa; }
.student-row-label { min-width: 0; flex: 1; }
.student-row-label strong, .student-row-label>span { display: block; overflow-wrap: anywhere; }
.student-row-label strong { font-size: .9375rem; font-weight: 600; }
.student-row-label>span { font-size: .75rem; color: var(--muted); letter-spacing: .3px; font-variant-numeric: tabular-nums; }
.student-row-arrow { color: #b0aabc; font-size: .875rem; }
.student-row[aria-pressed=true] .student-row-arrow { color: var(--primary); }
.directory-pagination { border-top: 1px solid var(--line); padding-top: 14px; margin-top: 12px; gap: 12px; }
.directory-pagination .button { min-height: 38px; padding: 6px 12px; font-size: .875rem; border-radius: 9px; }
.directory-pagination>span { font-size: .75rem; }
.student-records { min-width: 0; scroll-margin-top: 20px; }
.student-records-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 4px 0 24px; }
.selected-student { display: flex; align-items: center; gap: 15px; min-width: 0; }
.student-avatar { display: grid; place-items: center; flex-shrink: 0; width: 58px; height: 58px; border-radius: 16px; color: #4b7b70; background: #e1ede7; font-size: 1.375rem; }
.selected-student .eyebrow { margin: 0 0 3px; font-size: .6875rem; color: var(--muted); letter-spacing: 1px; }
.selected-student h2 { font-size: 1.375rem; margin: 0; overflow-wrap: anywhere; }
.student-account { color: var(--muted); font-size: .8125rem; margin: 3px 0 0; overflow-wrap: anywhere; }
.student-picker-open, .student-picker-close { display: none; }
.student-history-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-bottom: 18px; border-bottom: 1px solid #dedce8; }
.practice-type-switch { display: inline-flex; background: #eae8f2; padding: 4px; gap: 3px; border-radius: 11px; }
.practice-type-switch button { display: flex; gap: 7px; align-items: center; justify-content: center; border: 0; color: var(--muted); background: transparent; padding: 10px 15px; font-size: .875rem; border-radius: 8px; min-height: 44px; }
.practice-type-switch button[aria-pressed=true] { color: var(--primary-dark); background: #fff; box-shadow: 0 2px 5px #3028580d; font-weight: 650; }
.practice-type-switch .nav-icon { width: 17px; height: 17px; }
.student-history-summary { display: flex; justify-content: space-between; gap: 12px; font-size: .8125rem; color: var(--muted); padding: 17px 0; }
.student-history-list { display: grid; gap: 18px; }
.student-record-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 22px 24px 8px; min-width: 0; box-shadow: var(--shadow); }
.student-record-meta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; color: var(--muted); font-size: .75rem; margin-bottom: 18px; }
.record-language { border: 1px solid var(--line); border-radius: 5px; padding: 2px 7px; font-size: .6875rem; }
.student-record-main { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; }
.student-record-copy { min-width: 0; flex: 1; }
.record-label { font-size: .75rem; color: var(--muted); margin-bottom: 5px; }
.student-record-copy h3 { margin: 0 0 18px; font-size: 1.0625rem; font-weight: 550; line-height: 1.8; overflow-wrap: anywhere; white-space: pre-wrap; }
.record-total { flex-shrink: 0; min-width: 76px; text-align: right; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.3; }
.record-total>span { display: block; color: var(--muted); font-size: .6875rem; margin-bottom: 3px; }
.record-total strong { font-size: 2rem; font-weight: 650; }
.record-total small { font-size: .75rem; color: var(--muted); margin-left: 3px; }
.record-metrics { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); border: 1px solid #eeedf4; border-radius: 10px; background: #fafafe; margin: 0 0 16px; padding: 12px 0; }
.record-metrics>div { text-align: center; }
.record-metrics>div+div { border-left: 1px solid var(--line); }
.record-metrics dt { font-size: .75rem; color: var(--muted); }
.record-metrics dd { margin: 2px 0 0; font-size: 1.125rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.student-record-card audio { display: block; width: 100%; height: 40px; margin: 4px 0 16px; }
.record-audio-unavailable { font-size: .75rem; color: var(--muted); margin: 0 0 12px; }
.record-answer-preview { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; white-space: pre-wrap; overflow-wrap: anywhere; font-size: .9375rem; line-height: 1.85; margin-bottom: 20px; }
.record-details { border-top: 1px solid var(--line); padding-bottom: 4px; }
.record-details summary { min-height: 44px; cursor: pointer; padding: 13px 0 9px; color: var(--primary); font-size: .8125rem; }
.record-details[open] { padding-bottom: 16px; }
.record-details .feedback-copy, .record-details .recognized-text { font-size: 1rem; }
.teacher-empty { text-align: center; color: var(--muted); padding: 70px 22px; border: 1px dashed #d9d5e8; border-radius: 16px; background: #ffffff65; }
.teacher-empty h3 { color: #605971; font-size: 1.125rem; margin-bottom: 10px; }
.teacher-empty p { font-size: .875rem; line-height: 1.9; margin-bottom: 0; }
.teacher-empty-icon { display: grid; place-items: center; width: 54px; height: 54px; border-radius: 16px; margin: 0 auto 20px; background: var(--tint); color: #9a8fc4; font-size: 1.75rem; }
.student-list .teacher-empty { padding: 26px 12px; border: 0; }
.student-directory .notice { font-size: .8125rem; }
@media (max-width:1200px) { .teacher-workspace { grid-template-columns: 250px minmax(0,1fr); gap: 20px; } .teacher-scope { display: none; } .practice-type-switch button { padding: 9px 10px; } }
@media (max-width:1000px) {
    .teacher-workspace { grid-template-columns: minmax(0,1fr); }
    .student-directory { position: static; }
    .student-list { max-height: none; grid-template-columns: repeat(2,minmax(0,1fr)); }
    .teacher-workspace[data-view=students] .student-records, .teacher-workspace[data-view=records] .student-directory { display: none; }
    .student-picker-open, .student-picker-close { display: block; }
    .student-picker-open { flex-shrink: 0; font-size: .8125rem; padding: 9px 12px; }
}
@media (max-width:700px) {
    .student-list { grid-template-columns: minmax(0,1fr); }
    .teacher-page-heading h1 { font-size: 1.5rem; } .teacher-page-heading p:last-child { font-size: .9375rem; }
    .student-records-header { margin-bottom: 20px; } .selected-student { gap: 10px; } .student-avatar { width: 44px; height: 44px; border-radius: 12px; }
    .selected-student h2 { font-size: 1.125rem; } .student-history-toolbar { flex-wrap: wrap; gap: 8px; }
    .practice-type-switch { flex: 1; } .practice-type-switch button { flex: 1; }
    .student-history-toolbar>.text-button { font-size: .75rem; }
    .student-record-card { padding: 18px 16px 6px; } .student-record-main { gap: 12px; }
    .record-total { min-width: 66px; } .record-total strong { font-size: 1.75rem; }
    .student-history-summary { font-size: .75rem; } .student-record-copy h3 { font-size: 1rem; }
}

.admin-grid { display: grid; grid-template-columns: minmax(260px, .8fr) minmax(0, 1.6fr); gap: 24px; align-items: start; }
.admin-grid h2 { font-size: var(--text-heading); margin-bottom: 18px; }
.admin-search { display: grid; gap: 10px; }
.admin-users, .admin-records { display: grid; gap: 14px; margin-top: 22px; }
.admin-user { display: grid; gap: 5px; width: 100%; padding: 16px; text-align: left; border: 1px solid var(--line); border-radius: 14px; background: #fff; color: var(--ink); cursor: pointer; font: inherit; overflow-wrap: anywhere; }
.admin-user span { font-size: var(--text-support); color: var(--muted); }
.admin-user[aria-pressed="true"] { border-color: var(--primary); background: #f2edff; box-shadow: inset 3px 0 var(--primary); }
.admin-record-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.admin-record-controls select { width: auto; min-width: 150px; flex: 1; }
.admin-record { padding: 20px; border: 1px solid var(--line); border-radius: 16px; min-width: 0; }
.admin-record h3 { font-size: var(--text-body); margin: 0 0 16px; }
.admin-record-details { display: grid; grid-template-columns: minmax(100px, .35fr) minmax(0, 1fr); gap: 8px 16px; margin: 0 0 20px; }
.admin-record-details dt { color: var(--muted); font-size: var(--text-support); }
.admin-record-details dd { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.admin-delete { color: #a52c48; background: #fff1f3; border: 1px solid #ebc0c9; }
.admin-delete:hover { background: #ffe3e9; }
.admin-editor { margin-top: 22px; padding: 20px; border: 2px solid var(--primary); border-radius: 16px; background: #fcfaff; }
.admin-editor h3 { font-size: var(--text-heading); margin: 0 0 12px; }
.admin-editor-fields { display: grid; gap: 16px; margin: 20px 0; }
.admin-editor-fields label { display: grid; gap: 8px; }
.admin-grid .pagination { flex-wrap: wrap; }
.admin-grid .pagination span { font-size: var(--text-support); }
@media (max-width:1100px) { .admin-grid { grid-template-columns: 1fr; } .admin-users { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width:700px) { .admin-users { grid-template-columns: 1fr; } .admin-record { padding: 16px; } .admin-record-details { grid-template-columns: 1fr; gap: 3px; } .admin-record-details dd { margin-bottom: 12px; } .admin-editor { padding: 15px; } }