:root {
  color-scheme: dark;
  --bg:#07111f; --sidebar:#050e1a; --panel:#0b192b; --panel-soft:#0e2036;
  --text:#e6efff; --muted:#90abce; --line:#1a3552; --accent:#2188ff;
  --hover:#112b48; --shadow:0 12px 36px #0003; --green:#35d1ac;
}
:root[data-theme="light"] {
  color-scheme:light;
  --bg:#f1f5fb; --sidebar:#fff; --panel:#fff; --panel-soft:#eaf1fb;
  --text:#162d49; --muted:#536c8a; --line:#d8e3f0; --accent:#0865d9;
  --hover:#e6f0ff; --shadow:0 8px 28px #183b6410; --green:#0a8269;
}
* {box-sizing:border-box}
html {scroll-behavior:smooth}
body {margin:0;background:var(--bg);color:var(--text);font:14px/1.55 "Segoe UI",Arial,sans-serif}
a {color:inherit;text-decoration:none}
button,input,textarea,select {font:inherit}
button,a,input,textarea,select { -webkit-tap-highlight-color:transparent}
button {cursor:pointer}
button:disabled {opacity:.55;cursor:wait}
button {color:var(--text)}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible {outline:3px solid var(--accent);outline-offset:4px}
h1,h2,h3,p {margin:0}
h1 {font-size:23px;line-height:1.3}
h2 {font-size:25px;line-height:1.35;letter-spacing:-.5px}
h3 {font-size:15px;line-height:1.5}
p {color:var(--muted)}
small {font-size:12px}
input,textarea,select {color:var(--text);background:var(--panel-soft);border:1px solid var(--line);border-radius:10px;padding:11px 13px;min-width:0}
textarea {resize:vertical;width:100%;display:block}
label {display:block;font-size:13px;color:var(--muted)}
label input,label select {display:block;width:100%;margin-top:7px}
progress {appearance:none;-webkit-appearance:none;height:6px;width:100%;border:0;border-radius:10px;background:var(--panel-soft);overflow:hidden}
progress::-webkit-progress-bar {background:var(--panel-soft);border-radius:10px}
progress::-webkit-progress-value {background:linear-gradient(90deg,#1769ef,#23c2e2);border-radius:10px}
progress::-moz-progress-bar {background:#2188ff;border-radius:10px}
.button,button.primary,button.secondary {display:inline-flex;justify-content:center;align-items:center;gap:8px;padding:11px 17px;border-radius:10px;font-weight:600;font-size:13px;border:1px solid transparent}
.primary {background:var(--accent);color:white!important;border:0}
.primary:hover {filter:brightness(1.1)}
.secondary {background:var(--panel-soft);color:var(--text);border:1px solid var(--line)!important}
.secondary:hover {background:var(--hover)}
.icon-button {background:transparent;border:1px solid transparent;border-radius:9px;font-size:23px;padding:5px 9px;line-height:1.3}
.icon-button:hover {background:var(--hover)}
.text-button {border:0;background:none;padding:10px;color:var(--muted)}
.full-width {width:100%}
.eyebrow {color:var(--accent);font-size:10px;font-weight:700;letter-spacing:1.6px}
.muted {color:var(--muted);font-size:13px}
.prose {white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text);line-height:1.85}
.panel {padding:22px;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow)}
.section-heading {display:flex;align-items:center;justify-content:space-between;gap:16px;margin:24px 0 18px}
.section-heading h2 span {color:#89bfff;margin-right:8px}
.section-heading p {margin-top:5px;font-size:13px}
.section-heading .eyebrow {margin-bottom:7px}
.empty-state {padding:42px 24px;text-align:center;border:1px dashed var(--line);border-radius:14px;background:var(--panel)}
.empty-state>span {font-size:38px;color:var(--accent)}
.empty-state h3 {font-size:18px;margin:8px 0}
.empty-state p {margin:8px auto 18px;max-width:400px}
.date-picker {font-size:10px;text-align:right}
.date-picker input {padding:6px 10px;font-size:12px}
.brand {display:flex;align-items:center;gap:12px;font-size:23px;font-weight:650;letter-spacing:-.5px;white-space:nowrap}
.brand small {display:block;font-size:10px;color:var(--muted);font-weight:400;letter-spacing:.3px}
.brand-mark {font-size:48px;line-height:1;color:#1688ff;text-shadow:0 0 25px #1786ff44}
.nav-link {display:flex;align-items:center;gap:15px;width:100%;padding:10px 14px;margin:5px 0;border:0;border-radius:10px;background:transparent;color:var(--muted);text-align:left;font-size:13px}
.nav-link>span {font-size:22px;line-height:1.2;width:24px;text-align:center}
.nav-link:hover {background:var(--hover);color:var(--text)}
.nav-link.active {color:#e6f2ff;background:linear-gradient(95deg,#0b386b,#09284e);box-shadow:inset 3px 0 #2188ff}
:root[data-theme=light] .nav-link.active {background:#e8f2ff;color:#0865d9}
.nav-divider {height:1px;background:var(--line);margin:24px 10px}
.nav-caption {font-size:9px;letter-spacing:1.7px;margin:0 15px 13px}
.sidebar-bottom>small {display:block;text-align:center;color:var(--muted);font-size:10px;margin-top:18px}
.court-card {padding:22px 17px;height:190px;border:1px solid var(--line);border-radius:13px;position:relative;overflow:hidden;background:linear-gradient(125deg,var(--panel),#151b2a)}
.court-card>span {color:#87b9f0;font-size:8px;letter-spacing:1.2px}
.court-card p {color:#dcecff;font-size:14px;margin-top:16px;position:relative;z-index:1}
:root[data-theme=light] .court-card {background:linear-gradient(125deg,#132740,#151b2a)}
:root[data-theme=light] .encouragement p {color:var(--muted)}
.basketball-art {position:absolute;right:-14px;bottom:-46px;font-size:146px;color:#e87837;opacity:.8;line-height:1.3;text-shadow:0 0 35px #ec673230}
.topbar .greeting p {font-size:12px;margin-top:3px}
.greeting h1 span {font-size:20px}
.search {display:flex;align-items:center;width:250px;border:1px solid var(--line);border-radius:24px;padding:0 14px;background:var(--panel)}
.search>span {font-size:24px;color:#81b5f5}
.search input {border:0;background:transparent;font-size:11px;width:100%;margin:0;padding:10px}
.account {display:flex;gap:10px;align-items:center;font-size:12px;font-weight:600}
.account small {display:block;color:var(--muted);font-weight:400;font-size:10px}
.avatar {width:37px;height:37px;border-radius:50%;display:grid;place-items:center;color:#dfedff;background:linear-gradient(145deg,#687eae,#253658);border:2px solid #83a1ce33}
.hero-strip {display:grid;grid-template-columns:2.8fr repeat(3,1fr);gap:12px}
.hero-banner {min-height:183px;border:1px solid #364250;border-radius:14px;padding:24px;position:relative;isolation:isolate;overflow:hidden;color:#fff;background:#101e30 url("/static/court.svg") center/cover}
.hero-banner:before {content:"";position:absolute;inset:0;background:linear-gradient(90deg,#051326e8,#071426a0 55%,#10243520);z-index:-1}
.hero-banner .eyebrow {color:#97caff;font-size:8px;letter-spacing:1.4px}
.hero-banner h2 {font-size:23px;line-height:1.45;margin:12px 0 18px;letter-spacing:-.7px}
.hero-banner em {font-style:normal;color:#a1c8f2;font-size:17px;font-weight:400}
.hero-banner a {font-size:11px;color:#e5f1ff}
.hero-banner a span {margin-left:10px}
.stat-card {border-radius:13px;border:1px solid var(--line);text-align:center;padding:20px 10px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--panel)}
.stat-card>span {width:44px;height:44px;border-radius:50%;display:grid;place-items:center;font-size:24px;margin-bottom:12px}
.stat-card strong {font-size:25px;line-height:1.2}
.stat-card small {font-size:10px;line-height:1.6;margin-top:7px}
.stat-card.teal {background:linear-gradient(145deg,#07312c,var(--panel));color:#63e4c6}
.stat-card.teal>span {background:#119c78;box-shadow:0 0 25px #0faf7444;color:#bcffe6}
.stat-card.purple {background:linear-gradient(145deg,#241745,var(--panel));color:#c8a4f2}
.stat-card.purple>span {background:#7340c0;box-shadow:0 0 25px #843aca44;color:#f4e7ff}
.stat-card.blue {background:linear-gradient(145deg,#0c2b51,var(--panel));color:#4abaff}
.stat-card.blue>span {background:#0877f2;box-shadow:0 0 25px #0877f244;color:#fff}
:root[data-theme=light] .stat-card.teal {background:#e5f8f1;color:#116c55}
:root[data-theme=light] .stat-card.purple {background:#f0eafb;color:#6c42a7}
:root[data-theme=light] .stat-card.blue {background:#e7f2ff;color:#1264ad}
.lesson-list {display:flex;flex-direction:column;gap:10px}
.lesson-row {display:flex;align-items:center;gap:15px;padding:13px 16px;border:1px solid var(--line);border-radius:13px;background:linear-gradient(100deg,var(--panel),var(--bg));min-height:82px;transition:background .15s,transform .15s}
.lesson-row:hover {background:var(--hover);transform:translateX(3px);border-color:#3474a6}
.subject-icon {flex-shrink:0;width:48px;height:48px;display:grid;place-items:center;border-radius:11px;background:linear-gradient(140deg,#155790,#123363);font-size:25px;color:#fff;box-shadow:inset 0 0 0 1px #ffffff0c}
.subject-mathematics {background:linear-gradient(135deg,#6544dc,#33279c)}
.subject-physics {background:linear-gradient(135deg,#178cec,#0856b5)}
.subject-literature {background:linear-gradient(135deg,#9657c4,#5b268a)}
.subject-finance {background:linear-gradient(135deg,#20b789,#086640)}
.subject-relationships {background:linear-gradient(135deg,#b33eae,#781a75)}
.subject-english {background:linear-gradient(135deg,#5865c6,#28276a)}
.subject-basketball {background:linear-gradient(135deg,#ffb966,#e56923)}
.lesson-copy {flex:1;min-width:0}
.lesson-copy strong {display:block;font-size:14px;font-weight:600;color:#bbd9ff}
:root[data-theme=light] .lesson-copy strong {color:#24466e}
.lesson-copy>span {font-size:11px;color:var(--muted);display:block;margin-top:4px}
.lesson-duration {font-size:11px;color:var(--muted);white-space:nowrap}
.lesson-progress {display:flex;align-items:center;gap:8px;width:94px}
.lesson-progress small {font-size:10px;color:var(--muted)}
.lesson-progress progress {width:60px}
.row-arrow {color:#72b7ff;font-size:22px}
.training-banner {display:flex;align-items:center;gap:16px;padding:15px;border:1px solid var(--line);border-radius:13px;margin:12px 0 24px;background:var(--panel)}
.training-banner>span:nth-child(2) {flex:1}
.training-banner strong {font-size:14px}
.training-banner small {display:block;color:var(--muted);font-size:11px;margin-top:4px}
.training-banner .button {font-size:10px;padding:8px 12px}
.focus-section>h3 {margin-bottom:12px;font-size:12px}
.focus-grid {display:grid;grid-template-columns:1fr 1fr;gap:12px}
.focus-grid .panel {display:flex;gap:15px;text-align:left;padding:18px}
.focus-grid .panel>span {color:#bb97ff;font-size:32px}
.focus-grid strong {font-size:12px;font-weight:500}
.focus-grid p {font-size:11px;margin:5px 0 8px}
.focus-grid small {font-size:10px;color:var(--accent)}
.section-icon {color:#5bcef1}
.right-column .panel {padding:18px}
.right-column h3 {font-size:13px}
.overall {display:flex;align-items:center;gap:15px;margin:16px 0 20px}
.donut {position:relative;width:88px;height:88px;flex-shrink:0;display:grid;place-items:center}
.donut svg {position:absolute;inset:0;transform:rotate(-90deg)}
.donut circle {fill:none;stroke-width:8}
.donut-track {stroke:var(--panel-soft)}
.donut-value {stroke:#1e88ff;stroke-linecap:round}
.donut strong {font-size:19px}
.overall p {font-size:12px;color:var(--text)}
.overall small {display:block;color:var(--muted);font-size:10px;margin-top:7px}
.subject-progress {display:grid;grid-template-columns:1.2fr 1fr 28px;gap:8px;align-items:center;margin-top:12px}
.subject-progress>span {font-size:10px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.subject-progress small {font-size:10px;text-align:right}
.subject-progress:nth-of-type(3n) progress::-webkit-progress-value {background:#9265e3}
.subject-progress:nth-of-type(3n + 1) progress::-webkit-progress-value {background:#28b89d}
.calendar-nav {display:flex;justify-content:space-between;align-items:center;margin:16px 0;font-size:11px}
.calendar-nav a {font-size:22px;line-height:1;padding:2px 8px;border-radius:50%;background:var(--panel-soft);color:#8bbcf7}
.calendar-grid {display:grid;grid-template-columns:repeat(7,1fr);gap:5px 1px;text-align:center;font-size:11px}
.calendar-grid>span {font-size:9px;color:var(--muted);padding-bottom:7px}
.calendar-day {position:relative;width:27px;height:27px;display:grid;place-items:center;border-radius:50%;justify-self:center}
.calendar-day:hover {background:var(--hover)}
.calendar-day.selected {color:white;background:var(--accent);box-shadow:0 0 15px #2188ff33}
.calendar-day.has-lessons:after {content:"";position:absolute;bottom:1px;width:3px;height:3px;background:var(--green);border-radius:50%}
.muted-day {opacity:.3}
.calendar-legend {font-size:9px;margin-top:12px;display:flex;justify-content:space-between}
.calendar-legend a {color:var(--accent)}
.upcoming>a {display:flex;align-items:center;gap:9px;font-size:11px;margin-top:17px}
.upcoming>a>span:nth-child(2) {flex:1}
.upcoming small {font-size:10px;color:var(--muted)}
.event-dot {width:8px;height:8px;border-radius:50%;background:#fa9858;flex-shrink:0}
.upcoming>a:nth-of-type(2n) .event-dot {background:#8e66da}
.encouragement {border:1px solid var(--line);border-radius:12px;padding:15px;display:flex;align-items:center;justify-content:space-between;background:var(--panel)}
.encouragement>span {color:#258bff;font-size:29px}
.encouragement p {font-size:11px;color:#a0c0ef}
.subject-section {margin-bottom:30px}
.subject-section>h3 {margin:16px 0}
.subject-section small,.tasks-heading small {font-size:11px;color:var(--muted);font-weight:400;margin-left:8px}
.assignment-group {margin-bottom:15px}
.task-summary {display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding:13px 0;margin-top:9px;font-size:13px}
.task-summary small {color:var(--muted);white-space:nowrap}
.achievement-grid {display:grid;grid-template-columns:1fr 1fr;gap:18px}
.achievement {text-align:center;padding:30px}
.achievement>span {font-size:48px;color:#f9bc60}
.achievement h3 {font-size:19px;margin:12px 0}
.achievement p {font-size:12px}
.achievement small {display:block;color:var(--green);margin-top:18px}
.achievement.locked>span {color:var(--muted)}
.achievement.locked small {color:var(--muted)}
.training-form {margin-bottom:25px}
.form-grid {display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}
.training-form textarea {margin:8px 0 16px}
.form-status {font-size:12px;margin-top:10px;white-space:pre-wrap}
.form-status.error,.error {color:#fa868f}
.error {background:#cb274414;padding:12px;border-radius:8px;margin:15px 0}
.training-entry {display:flex;gap:18px;margin-top:12px}
.training-entry p {font-size:12px;margin:5px 0 10px}
.training-entry .prose {font-size:13px}
.profile-panel {padding:35px}
.avatar.large {width:70px;height:70px;font-size:28px;margin-bottom:20px}
.profile-panel h2 {margin-bottom:7px}
dl {display:grid;grid-template-columns:100px 1fr;gap:20px;font-size:13px;margin-top:28px}
dt {color:var(--muted)}
dd {margin:0}
.back-link {color:var(--muted);font-size:12px}
.lesson-page,.parent-page {max-width:1250px;margin:auto}
.material h3 {margin:22px 0 10px}
.material h3:first-child {margin-top:0}
.material .prose {font-size:14px}
.video-link {display:inline-flex;padding:12px 16px;background:var(--panel-soft);border:1px solid var(--line);border-radius:10px;color:#7eb8ff;margin:20px 0 10px}
.tasks-heading {font-size:20px;margin:25px 0 17px}
.task-card {margin-bottom:20px}
.task-card h3 {font-size:19px;margin:10px 0}
.task-card .prose {margin-bottom:18px}
.task-card textarea {margin-top:8px}
.form-actions {display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}
.learning-steps {padding-left:20px;font-size:13px;color:var(--muted);line-height:2.5;margin:15px 0}
.lesson-side .panel {margin-bottom:18px}
.lesson-side p {font-size:12px;margin:12px 0}
.lesson-side .primary {margin-top:12px}
.parent-filter {display:flex;align-items:flex-end;gap:10px}
.parent-stats {display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:24px}
.parent-stats small {display:block;color:var(--muted)}
.parent-stats strong {display:block;font-size:25px;margin-top:10px}
.parent-lesson {display:flex;align-items:center;gap:20px;padding:14px 0;border-bottom:1px solid var(--line)}
.parent-lesson span {flex:1}
.parent-lesson progress {max-width:150px}
.parent-lesson small {color:var(--muted);min-width:85px}
.review-card {margin-bottom:18px}
.review-card h3 {margin:10px 0}
.answer-text {background:var(--panel-soft);padding:15px;border-radius:8px;margin:16px 0}
.review-card form {display:flex;align-items:flex-end;gap:15px;margin-top:16px;flex-wrap:wrap}
.review-card input {max-width:140px}
.ai-launcher {position:fixed;right:24px;bottom:22px;width:58px;height:58px;border:1px solid #63b4ff;background:linear-gradient(135deg,#269eff,#0566ed);color:white;border-radius:50%;z-index:20;box-shadow:0 6px 32px #097aff50;display:grid;place-items:center}
.ai-launcher>span {font-size:36px}
.ai-launcher small {position:absolute;bottom:68px;right:0;white-space:nowrap;background:var(--panel);border:1px solid var(--line);border-radius:7px;padding:5px 9px;color:var(--text);font-size:10px}
.ai-dialog {width:min(960px,68vw);height:min(760px,82vh);padding:0;color:var(--text);background:var(--bg);border:1px solid #3775a8;border-radius:20px;box-shadow:0 30px 130px #0009}
.ai-dialog[open] {display:flex;flex-direction:column}
.ai-dialog::backdrop {background:#010812b8;backdrop-filter:blur(7px)}
.dialog-top {display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);padding:20px 24px;background:var(--panel)}
.dialog-top h2 {font-size:18px}
.dialog-top p {font-size:11px;margin-top:3px}
.dialog-top .icon-button {margin-left:auto}
.ai-avatar {width:39px;height:39px;border-radius:12px;background:#174778;color:#bee1ff;display:grid;place-items:center;font-size:28px}
.chat {flex:1;min-height:120px;overflow:auto;padding:24px;display:flex;flex-direction:column;gap:15px}
.bubble {border:1px solid var(--line);padding:16px 18px;border-radius:15px;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.75;max-width:88%;align-self:flex-start;background:var(--panel-soft)}
.bubble.user {align-self:flex-end;background:#123970;color:#edf5ff;border-color:#23518b}
.bubble.pending {color:var(--muted)}
.quick-prompts {display:flex;gap:8px;flex-wrap:wrap;padding:10px 24px}
.chip {border:1px solid var(--line);background:var(--panel);border-radius:24px;padding:9px 14px;font-size:11px}
.chip:hover {background:var(--hover)}
.ai-form {display:flex;align-items:center;gap:10px;padding:12px 24px 6px}
.ai-form textarea {max-height:120px;resize:none;border-radius:13px}
.ai-form button {border-radius:50%;width:44px;height:44px;flex-shrink:0}
.ai-disclaimer {font-size:10px;padding:7px 24px 18px}
.toast {position:fixed;bottom:25px;left:50%;transform:translateX(-50%);z-index:100;background:var(--panel-soft);border:1px solid var(--line);border-radius:12px;padding:14px 22px;max-width:min(500px,80vw);box-shadow:var(--shadow)}
.login-page {min-height:100vh;display:grid;place-items:center;background:radial-gradient(ellipse at 15% 70%,#10365b66,transparent 60%),var(--bg);padding:30px}
.login-layout {display:grid;grid-template-columns:1.1fr 1fr;width:min(1000px,100%);gap:85px;align-items:center}
.login-intro .brand {margin-bottom:70px}
.login-intro h1 {font-size:64px;letter-spacing:-2px;margin:20px 0;line-height:1.12}
.login-intro h1 em {color:#3299ff;font-style:normal}
.login-intro>p {font-size:13px}
.login-court {height:120px;background:url("/static/court.svg") center/cover;margin-top:30px;border-radius:15px;opacity:.7}
.login-card {max-width:450px;width:100%;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:36px;box-shadow:var(--shadow)}
.login-card h2 {font-size:27px;margin:10px 0}
.login-card>p {font-size:13px;margin-bottom:25px}
.login-card form>label {margin:17px 0 7px}
.login-card form>input:not([type=hidden]) {width:100%}
.login-card form>button {margin-top:25px}
.login-card .login-hint {font-size:11px;line-height:1.8;margin:25px 0 0}
.sr-only {position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip-link {position:fixed;top:-80px;left:20px;padding:12px;background:var(--accent);color:white;z-index:200}
.skip-link:focus {top:10px}
[hidden] {display:none!important}
@media(prefers-reduced-motion:reduce) {* {scroll-behavior:auto!important;transition:none!important}}