@layer reset, base, components, utilities;

@layer reset {
    *, *::before, *::after { box-sizing: border-box; }
    html { min-width: 320px; color-scheme: light; }
    body, h1, h2, h3, p { margin: 0; }
    body { min-height: 100vh; }
    button, input, select { font: inherit; }
    button, summary { -webkit-tap-highlight-color: transparent; }
    a { color: inherit; }
}

@layer base {
    :root {
        --ink: #17152b;
        --muted: #77748c;
        --line: #e8e7ef;
        --surface: #ffffff;
        --canvas: #f6f6fa;
        --violet: #6657e8;
        --violet-dark: #4f42ce;
        --violet-soft: #efedff;
        --nav: #1c1936;
        --success: #19865f;
        --success-soft: #e7f7f0;
        --warning: #bf7119;
        --warning-soft: #fff3df;
        --danger: #c74660;
        --danger-soft: #ffedf1;
        --blue: #3478d3;
        --blue-soft: #eaf3ff;
        --status-lesson: #19865f;
        --status-free: #6657e8;
        --status-canceled: #c74660;
        --status-busy: #77748c;
        --radius: 18px;
        --shadow: 0 12px 35px rgba(35, 31, 70, 0.07);
        font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
        color: var(--ink);
        background: var(--canvas);
    }

    body { background: var(--canvas); color: var(--ink); }
    h1 { font-size: clamp(1.75rem, 2.5vw, 2.35rem); line-height: 1.12; letter-spacing: -0.035em; }
    h2 { font-size: 1.15rem; line-height: 1.3; letter-spacing: -0.015em; }
    small { color: var(--muted); font-weight: 400; }
    :focus-visible { outline: 3px solid rgba(102, 87, 232, 0.28); outline-offset: 2px; }
}

@layer components {
    .brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-size: 1.08rem; font-weight: 800; text-decoration: none; letter-spacing: -0.02em; }
    .brand--light { color: #fff; }
    .brand__mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px; color: #fff; background: linear-gradient(145deg, #8c7dff, #5a49dc); box-shadow: 0 8px 18px rgba(91, 73, 221, .32); }

    .language-switch { display: none; align-items: center; justify-content: center; gap: 3px; width: max-content; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: rgba(255,255,255,.9); box-shadow: 0 8px 22px rgba(26,22,58,.08); }
    .language-switch a { display: grid; min-width: 38px; height: 30px; place-items: center; border-radius: 999px; color: var(--muted); font-size: .7rem; font-weight: 850; letter-spacing: .04em; text-decoration: none; }
    .language-switch a:hover { color: var(--ink); background: #f4f3f8; }
    .language-switch a.is-active { color: #fff; background: linear-gradient(135deg, #7d6df1, #5545d0); box-shadow: 0 5px 12px rgba(87,70,210,.25); }
    .language-switch--sidebar { border-color: rgba(255,255,255,.12); background: rgba(255,255,255,.07); box-shadow: none; }
    .language-switch--sidebar a { color: rgba(255,255,255,.55); }
    .language-switch--sidebar a:hover { color: #fff; background: rgba(255,255,255,.08); }
    .sidebar__brand-stack, .auth-brand-stack, .setup-brand-stack { display: grid; width: max-content; justify-items: center; gap: 18px; }
    .sidebar__brand-stack { align-self: center; }
    .auth-brand-stack { align-self: flex-start; }
    .setup-brand-stack { justify-self: start; }

    .eyebrow { margin-bottom: 8px; color: rgba(255,255,255,.62); font-size: .72rem; font-weight: 800; letter-spacing: .11em; text-transform: uppercase; }
    .eyebrow--purple { color: var(--violet); }
    .muted { color: var(--muted); line-height: 1.55; }
    .stack { display: grid; gap: 16px; }

    .button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; gap: 8px; border: 1px solid transparent; border-radius: 12px; padding: 9px 16px; cursor: pointer; font-weight: 750; text-decoration: none; transition: background-color .18s ease, border-color .18s ease, transform .18s ease; }
    .button:hover:not(:disabled) { transform: translateY(-1px); }
    .button:disabled { opacity: .45; cursor: not-allowed; }
    .button--primary { color: #fff; background: var(--violet); box-shadow: 0 8px 20px rgba(102,87,232,.2); }
    .button--primary:hover { background: var(--violet-dark); }
    .button--secondary { color: var(--ink); border-color: var(--line); background: var(--surface); }
    .button--secondary:hover { border-color: #cbc8dd; }
    .button--ghost { min-height: 36px; color: var(--muted); background: transparent; }
    .button--ghost:hover { color: var(--ink); background: #f1f0f6; }
    .button--small { min-height: 34px; padding: 6px 10px; font-size: .78rem; }
    .button--wide { width: 100%; }
    .icon-button { display: inline-grid; width: 42px; height: 42px; place-items: center; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); background: var(--surface); cursor: pointer; text-decoration: none; }
    .icon-button:hover { border-color: #cbc8dd; background: #faf9fd; }
    .icon-button--dark { width: 34px; height: 34px; color: rgba(255,255,255,.7); border-color: rgba(255,255,255,.1); background: rgba(255,255,255,.06); }

    .field { display: grid; gap: 7px; min-width: 0; }
    .field > span { color: #4d4a61; font-size: .82rem; font-weight: 700; }
    .field input, .field select { width: 100%; height: 45px; border: 1px solid #dedce8; border-radius: 11px; padding: 0 13px; color: var(--ink); background: #fff; transition: border-color .16s, box-shadow .16s; }
    .field input:hover, .field select:hover { border-color: #c6c2d7; }
    .field input:focus, .field select:focus { border-color: var(--violet); outline: 0; box-shadow: 0 0 0 3px rgba(102,87,232,.12); }
    .field input[type="color"] { padding: 5px; cursor: pointer; }
    .field--compact { gap: 5px; }
    .field--compact input { height: 38px; }

    .alert { margin-bottom: 18px; border: 1px solid transparent; border-radius: 13px; padding: 12px 15px; line-height: 1.5; }
    .alert ul { margin: 0; padding-left: 18px; }
    .alert--error { color: #a52c45; border-color: #f2c6cf; background: var(--danger-soft); }
    .alert--success { color: #166c4e; border-color: #bfe7d6; background: var(--success-soft); }
    .alert--info { color: #325d91; border-color: #c9def7; background: var(--blue-soft); }

    .auth-page { background: #eeedf5; }
    .auth-shell { display: grid; min-height: 100vh; grid-template-columns: minmax(350px, 1.05fr) minmax(430px, .95fr); }
    .auth-intro { display: flex; min-height: 100vh; flex-direction: column; padding: clamp(34px, 5vw, 70px); color: #fff; background: radial-gradient(circle at 15% 20%, rgba(128,112,255,.22), transparent 34%), radial-gradient(circle at 82% 76%, rgba(83,203,173,.12), transparent 30%), var(--nav); }
    .auth-intro__content { margin: auto 0; max-width: 600px; }
    .auth-intro h1 { margin-bottom: 24px; font-size: clamp(2.7rem, 5vw, 5rem); line-height: .98; letter-spacing: -.06em; }
    .auth-intro__content > p:last-child { max-width: 490px; color: rgba(255,255,255,.65); font-size: 1.05rem; line-height: 1.65; }
    .auth-intro__note { color: rgba(255,255,255,.45); font-size: .8rem; }
    .auth-panel { display: grid; place-items: center; padding: 32px; background: #fff; }
    .auth-form { display: grid; width: min(100%, 390px); gap: 20px; }
    .auth-form h2 { margin-bottom: 8px; font-size: 2rem; }
    .auth-links { display: flex; justify-content: flex-end; margin-top: -8px; }
    .auth-links a, .auth-back-link { color: var(--violet); font-size: .84rem; font-weight: 750; text-decoration: none; }
    .auth-links a:hover, .auth-back-link:hover { text-decoration: underline; }
    .setup-page { display: grid; min-height: 100vh; place-items: center; padding: 24px; background: radial-gradient(circle at top, #f1efff, #f7f7fa 55%); }
    .setup-card { display: grid; width: min(100%, 530px); gap: 26px; border: 1px solid var(--line); border-radius: 24px; padding: clamp(26px, 5vw, 46px); background: #fff; box-shadow: var(--shadow); }

    .app-shell { min-height: 100vh; }
    .sidebar { position: fixed; z-index: 20; inset: 0 auto 0 0; display: flex; width: 244px; flex-direction: column; padding: 26px 18px 20px; color: #fff; background: var(--nav); }
    .side-nav { display: grid; gap: 5px; margin-top: 46px; }
    .side-nav__label { margin: 26px 11px 7px; color: rgba(255,255,255,.32); font-size: .66rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
    .side-nav__item { display: flex; min-height: 46px; align-items: center; gap: 12px; border-radius: 12px; padding: 0 13px; color: rgba(255,255,255,.58); font-size: .88rem; font-weight: 680; text-decoration: none; }
    .side-nav__item > span:first-child { width: 19px; color: rgba(255,255,255,.42); font-size: 1.05rem; text-align: center; }
    .side-nav__item:hover { color: #fff; background: rgba(255,255,255,.06); }
    .side-nav__item.is-active { color: #fff; background: linear-gradient(135deg, rgba(124,106,255,.35), rgba(100,83,232,.22)); }
    .side-nav__item.is-active > span:first-child { color: #9c90ff; }
    .sidebar__account { display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 10px; margin-top: auto; border-top: 1px solid rgba(255,255,255,.08); padding-top: 18px; }
    .sidebar__account-copy { display: grid; min-width: 0; gap: 2px; }
    .sidebar__account-copy strong { overflow: hidden; font-size: .8rem; text-overflow: ellipsis; white-space: nowrap; }
    .sidebar__account-copy span { color: rgba(255,255,255,.42); font-size: .68rem; }
    .mobile-menu-toggle { display: none; width: 42px; height: 42px; place-items: center; border: 1px solid rgba(255,255,255,.12); border-radius: 12px; padding: 10px; color: #fff; background: rgba(255,255,255,.07); cursor: pointer; }
    .mobile-menu-toggle span { display: block; width: 19px; height: 2px; border-radius: 999px; background: currentColor; transition: transform .18s ease, opacity .18s ease; }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
    .mobile-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
    .avatar { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 11px; color: #fff; background: linear-gradient(145deg, #7d6cf1, #5143ba); font-size: .78rem; font-weight: 800; }
    .avatar--light { color: var(--violet-dark); background: var(--violet-soft); }
    .main-content { min-height: 100vh; margin-left: 244px; padding: 36px clamp(24px, 3.5vw, 56px) 56px; }
    .page-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 26px; margin-bottom: 28px; }
    .page-header h1 { margin-bottom: 8px; }

    .week-controls { display: flex; align-items: center; gap: 8px; }
    .week-picker { display: grid; min-width: 190px; gap: 1px; border: 1px solid var(--line); border-radius: 12px; padding: 6px 15px; color: var(--ink); background: #fff; cursor: pointer; text-align: left; }
    .week-picker__caption { color: var(--muted); font-size: .66rem; font-weight: 700; text-transform: uppercase; }
    .week-picker strong { font-size: .83rem; }
    .demo-banner { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; border: 1px solid #d8d3ff; border-radius: 14px; padding: 11px 15px; color: #4d42ac; background: #f1efff; }
    .demo-banner > span { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 9px; color: #fff; background: var(--violet); }
    .demo-banner div { display: flex; flex-wrap: wrap; gap: 5px 10px; font-size: .78rem; }
    .demo-banner div span { color: #716baa; }

    .summary-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 18px; }
    .summary-card { display: flex; min-width: 0; align-items: center; gap: 13px; border: 1px solid var(--line); border-radius: 15px; padding: 16px; background: #fff; box-shadow: 0 7px 22px rgba(35,31,70,.035); }
    .summary-card__icon { display: grid; width: 40px; height: 40px; flex: 0 0 auto; place-items: center; border-radius: 12px; font-weight: 850; }
    .summary-card__icon--violet { color: var(--violet); background: var(--violet-soft); }
    .summary-card__icon--blue { color: var(--blue); background: var(--blue-soft); }
    .summary-card__icon--amber { color: var(--warning); background: var(--warning-soft); }
    .summary-card__icon--pink { color: var(--danger); background: var(--danger-soft); }
    .summary-card div { display: grid; min-width: 0; gap: 4px; }
    .summary-card span:not(.summary-card__icon) { overflow: hidden; color: var(--muted); font-size: .72rem; text-overflow: ellipsis; white-space: nowrap; }
    .summary-card strong { font-size: 1.45rem; letter-spacing: -.04em; }
    .summary-card--interactive { position: relative; color: var(--ink); cursor: pointer; font: inherit; text-align: left; transition: border-color .16s ease, transform .16s ease, box-shadow .16s ease; }
    .summary-card--interactive:hover { border-color: #d2cdf7; transform: translateY(-1px); box-shadow: 0 11px 27px rgba(61,50,135,.09); }
    .summary-card--interactive:focus-visible { outline: 3px solid rgba(102,87,232,.25); outline-offset: 2px; }
    .summary-card__arrow { margin-left: auto; color: #aaa5c0; font-size: 1.35rem; font-weight: 800; }

    .balance-dialog { width: min(620px, calc(100% - 28px)); max-height: min(760px, calc(100vh - 28px)); margin: auto; border: 0; border-radius: 22px; padding: 0; color: var(--ink); background: transparent; box-shadow: 0 28px 80px rgba(31,25,70,.24); }
    .balance-dialog::backdrop { background: rgba(26,22,51,.48); backdrop-filter: blur(5px); }
    .balance-dialog__surface { overflow: hidden; border: 1px solid rgba(255,255,255,.72); border-radius: inherit; background: #fff; }
    .balance-dialog__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 24px 24px 18px; background: radial-gradient(circle at 100% 0, rgba(102,87,232,.12), transparent 40%), #fff; }
    .balance-dialog__header h2 { margin: 4px 0 6px; font-size: 1.35rem; }
    .balance-dialog__header .muted { max-width: 460px; font-size: .72rem; line-height: 1.5; }
    .balance-dialog__close { display: grid; width: 36px; height: 36px; flex: 0 0 auto; place-items: center; border: 1px solid var(--line); border-radius: 11px; color: var(--muted); background: rgba(255,255,255,.88); cursor: pointer; font-size: 1.25rem; line-height: 1; }
    .balance-dialog__close:hover { color: var(--ink); background: #f5f4fa; }
    .balance-dialog__summary { display: flex; align-items: baseline; gap: 7px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 11px 24px; color: var(--muted); background: #fafafd; font-size: .68rem; font-weight: 750; }
    .balance-dialog__summary span:first-child { color: var(--violet-dark); font-size: 1rem; font-weight: 900; }
    .balance-dialog__list { display: grid; max-height: min(500px, 58vh); gap: 7px; overflow-y: auto; margin: 0; padding: 12px; list-style: none; scrollbar-width: thin; }
    .balance-teacher-item { min-width: 0; }
    .balance-dialog__empty { padding: 38px 18px; color: var(--muted); font-size: .76rem; text-align: center; }
    .balance-teacher { display: grid; grid-template-columns: 7px minmax(0, 1fr) auto 18px; align-items: center; gap: 12px; width: 100%; border: 1px solid var(--line); border-radius: 13px; padding: 12px; color: var(--ink); background: #fff; cursor: pointer; text-align: left; transition: border-color .16s ease, background .16s ease, transform .16s ease; }
    .balance-teacher:hover { border-color: #d2cdf7; background: #faf9ff; transform: translateX(2px); }
    .balance-teacher:focus-visible { outline: 3px solid rgba(102,87,232,.22); outline-offset: 1px; }
    .balance-teacher__marker { width: 7px; height: 34px; border-radius: 999px; background: var(--teacher-color); }
    .balance-teacher__copy { display: grid; min-width: 0; gap: 4px; }
    .balance-teacher__copy strong, .balance-teacher__copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .balance-teacher__copy strong { font-size: .75rem; }
    .balance-teacher__copy small { color: var(--muted); font-size: .62rem; }
    .balance-teacher__amount { min-width: 48px; border-radius: 999px; padding: 6px 9px; font-size: .68rem; font-weight: 900; text-align: center; }
    .balance-teacher__amount--under { color: #a46617; background: var(--warning-soft); }
    .balance-teacher__amount--over { color: var(--danger); background: var(--danger-soft); }
    .balance-teacher__arrow { color: #a7a2b8; font-size: 1.1rem; font-weight: 900; text-align: right; }

    .dashboard-view-tabs { display: inline-flex; gap: 4px; margin-bottom: 18px; border: 1px solid var(--line); border-radius: 15px; padding: 4px; background: rgba(255,255,255,.9); box-shadow: 0 8px 24px rgba(35,31,70,.045); }
    .dashboard-view-tabs__button { min-height: 40px; border: 0; border-radius: 11px; padding: 0 18px; color: var(--muted); background: transparent; cursor: pointer; font-size: .75rem; font-weight: 800; }
    .dashboard-view-tabs__button:hover { color: var(--ink); background: #f5f4f9; }
    .dashboard-view-tabs__button.is-active { color: #fff; background: linear-gradient(135deg, #7666ef, #5645d2); box-shadow: 0 7px 16px rgba(87,70,210,.24); }

    .week-overview-card { overflow: hidden; margin-bottom: 18px; border: 1px solid var(--line); border-radius: 20px; background: radial-gradient(circle at 92% 0, rgba(102,87,232,.08), transparent 24%), #fff; box-shadow: var(--shadow); }
    .week-overview-card__description { max-width: 520px; text-align: right; }
    .week-language-filter { display: flex; gap: 7px; overflow-x: auto; padding: 0 22px 16px; scrollbar-width: thin; }
    .week-language-filter__button { flex: 0 0 auto; min-height: 36px; border: 1px solid var(--line); border-radius: 999px; padding: 0 13px; color: var(--muted); background: rgba(250,250,253,.9); cursor: pointer; font-size: .67rem; font-weight: 800; }
    .week-language-filter__button:hover { border-color: #cfc9fa; color: var(--violet-dark); background: #f4f2ff; }
    .week-language-filter__button.is-active { border-color: transparent; color: #fff; background: linear-gradient(135deg, #7666ef, #5645d2); box-shadow: 0 6px 14px rgba(87,70,210,.22); }
    .week-board { display: grid; grid-template-columns: repeat(7, minmax(178px, 1fr)); max-height: 73vh; overflow: auto; border-top: 1px solid var(--line); scrollbar-width: thin; }
    .week-board > .loading-cell { grid-column: 1 / -1; }
    .week-day { min-width: 178px; border-right: 1px solid var(--line); background: rgba(255,255,255,.9); }
    .week-day:last-child { border-right: 0; }
    .week-day.is-today { background: linear-gradient(180deg, rgba(239,237,255,.7), rgba(250,249,255,.62)); box-shadow: inset 0 3px 0 var(--violet); }
    .week-day__header { position: sticky; z-index: 5; top: 0; display: flex; align-items: center; justify-content: space-between; gap: 8px; min-height: 52px; padding: 10px 12px; border-bottom: 1px solid var(--line); background: rgba(250,250,253,.97); backdrop-filter: blur(8px); }
    .week-day.is-today .week-day__header { color: var(--violet-dark); background: rgba(239,237,255,.97); }
    .week-day__header strong { font-size: .69rem; text-transform: capitalize; }
    .week-day__header span { display: grid; min-width: 25px; height: 25px; place-items: center; border-radius: 999px; color: var(--muted); background: #eeedf3; font-size: .61rem; font-weight: 850; }
    .week-day.is-today .week-day__header span { color: #fff; background: var(--violet); }
    .week-day__events { display: grid; align-content: start; gap: 6px; min-height: 250px; padding: 9px; }
    .week-day__empty { margin: 26px 0; color: #aaa7b6; font-size: .66rem; text-align: center; }
    .week-event { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 7px; width: 100%; border: 1px solid color-mix(in srgb, var(--event-color) 20%, #e8e6ef); border-left: 4px solid var(--event-color); border-radius: 10px; padding: 8px 8px 7px; color: var(--ink); background: color-mix(in srgb, var(--event-color) 6%, #fff); cursor: pointer; text-align: left; transition: transform .16s ease, box-shadow .16s ease; }
    .week-event:hover { z-index: 1; transform: translateY(-1px); box-shadow: 0 8px 18px rgba(35,31,70,.1); }
    .week-event strong { grid-row: 1 / span 2; color: var(--event-color); font-size: .61rem; white-space: nowrap; }
    .week-event span, .week-event small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .week-event span { font-size: .66rem; font-weight: 800; }
    .week-event small { color: var(--muted); font-size: .56rem; }
    .week-event--lesson { --event-color: var(--status-lesson); }
    .week-event--free { --event-color: var(--status-free); background: color-mix(in srgb, var(--status-free) 8%, #fff); }
    .week-event--free small { color: color-mix(in srgb, var(--status-free) 82%, #17152b); font-weight: 800; }

    .calendar-day-picker { display: flex; gap: 6px; overflow-x: auto; margin: 0 24px 14px; padding-bottom: 2px; scrollbar-width: thin; }
    .calendar-day-picker__button { flex: 1 0 98px; min-height: 37px; border: 1px solid var(--line); border-radius: 10px; padding: 0 9px; color: var(--muted); background: #fafafd; cursor: pointer; font-size: .64rem; font-weight: 800; text-transform: capitalize; }
    .calendar-day-picker__button:hover { color: var(--violet-dark); background: #f2f0ff; }
    .calendar-day-picker__button.is-today { border-color: #cfc8ff; color: var(--violet-dark); }
    .calendar-day-picker__button.is-active { border-color: transparent; color: #fff; background: linear-gradient(135deg, #7666ef, #5645d2); box-shadow: 0 6px 13px rgba(87,70,210,.2); }

    .dashboard-workspace { display: grid; grid-template-columns: 272px minmax(0, 1fr); align-items: start; gap: 18px; margin-bottom: 18px; }
    .dashboard-workspace--personal { grid-template-columns: minmax(0, 1fr); }
    .teacher-browser, .hourly-card { border: 1px solid var(--line); border-radius: 20px; background: #fff; box-shadow: var(--shadow); }
    .teacher-browser { position: sticky; top: 18px; display: grid; grid-template-rows: auto auto minmax(0, 1fr); max-height: calc(100vh - 36px); overflow: hidden; }
    .teacher-browser__header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 20px 13px; }
    .teacher-browser__header h2 { font-size: 1rem; }
    .teacher-search { display: grid; grid-template-columns: 20px minmax(0, 1fr); align-items: center; gap: 7px; margin: 0 14px 12px; border: 1px solid var(--line); border-radius: 12px; padding: 0 11px; color: #aaa7b7; background: #fafafd; }
    .teacher-search input { width: 100%; height: 40px; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: .76rem; }
    .teacher-browser__list { display: grid; align-content: start; gap: 4px; overflow-y: auto; padding: 0 10px 14px; scrollbar-width: thin; }
    .teacher-nav-item { display: grid; grid-template-columns: 8px minmax(0, 1fr) 16px; align-items: center; gap: 10px; width: 100%; min-height: 58px; border: 0; border-radius: 13px; padding: 8px 10px; color: var(--ink); background: transparent; cursor: pointer; text-align: left; }
    .teacher-nav-item:hover { background: #f7f6fb; }
    .teacher-nav-item.is-active { background: linear-gradient(135deg, #f0edff, #f8f7ff); box-shadow: inset 0 0 0 1px #ded8ff; }
    .teacher-nav-item__marker { width: 7px; height: 34px; border-radius: 999px; background: var(--item-color, var(--violet)); }
    .teacher-nav-item__copy { display: grid; min-width: 0; gap: 4px; }
    .teacher-nav-item__copy strong, .teacher-nav-item__copy span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .teacher-nav-item__copy strong { font-size: .76rem; }
    .teacher-nav-item__copy span { color: var(--muted); font-size: .62rem; }
    .teacher-nav-item__arrow { color: #aaa7ba; font-size: 1.15rem; }
    .teacher-browser__empty { padding: 28px 10px; color: var(--muted); font-size: .75rem; text-align: center; }

    .hourly-card { min-width: 0; overflow: hidden; background: radial-gradient(circle at 90% 0, rgba(102,87,232,.08), transparent 25%), #fff; }
    .hourly-card__header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; padding: 22px 24px 16px; }
    .hourly-card__header h2 { margin-bottom: 4px; font-size: 1.25rem; }
    .hourly-card__header .muted { font-size: .7rem; }
    .calendar-mode { display: inline-flex; gap: 3px; border: 1px solid var(--line); border-radius: 12px; padding: 3px; background: #f7f6fa; }
    .calendar-mode__button { min-height: 36px; border: 0; border-radius: 9px; padding: 0 13px; color: var(--muted); background: transparent; cursor: pointer; font-size: .69rem; font-weight: 800; }
    .calendar-mode__button.is-active { color: var(--violet-dark); background: #fff; box-shadow: 0 4px 12px rgba(30,25,69,.09); }

    .calendar-identity { display: grid; grid-template-columns: 12px minmax(0, 1fr) auto; align-items: center; gap: 14px; margin: 0 24px 14px; border: 1px solid #ded9ff; border-radius: 16px; padding: 14px 16px; background: linear-gradient(135deg, rgba(239,237,255,.9), rgba(250,249,255,.95)); }
    .calendar-identity__color { width: 10px; height: 46px; border-radius: 999px; background: var(--identity-color, var(--violet)); box-shadow: 0 5px 14px color-mix(in srgb, var(--identity-color, var(--violet)) 30%, transparent); }
    .calendar-identity > div:not(.calendar-identity__metrics) { display: grid; min-width: 0; gap: 4px; }
    .calendar-identity > div > strong { overflow: hidden; font-size: .92rem; text-overflow: ellipsis; white-space: nowrap; }
    .calendar-identity > div > span { color: var(--muted); font-size: .67rem; }
    .calendar-identity__metrics { display: flex; gap: 8px; }
    .calendar-identity__metrics span { border-radius: 999px; padding: 7px 10px; color: #676279; background: rgba(255,255,255,.86); font-size: .64rem; }
    .calendar-identity__metrics strong { color: var(--ink); font-size: .74rem; }

    .calendar-legend { display: flex; flex-wrap: wrap; gap: 13px; padding: 0 24px 15px; color: var(--muted); font-size: .65rem; }
    .calendar-legend span { display: inline-flex; align-items: center; gap: 6px; }
    .calendar-legend__dot { width: 8px; height: 8px; border-radius: 3px; }
    .calendar-legend__dot--lesson { background: var(--status-lesson); }
    .calendar-legend__dot--free { background: var(--status-free); }
    .calendar-legend__dot--canceled { background: var(--status-canceled); }
    .calendar-legend__dot--busy { background: var(--status-busy); }

    .hourly-scroll { max-height: 72vh; overflow: auto; border-top: 1px solid var(--line); scrollbar-width: thin; }
    .hourly-calendar { width: 100%; min-width: 1000px; border-collapse: separate; border-spacing: 0; table-layout: fixed; }
    .hourly-calendar th, .hourly-calendar td { border-right: 1px solid #ecebf2; border-bottom: 1px solid #eeedf3; }
    .hourly-calendar thead th { position: sticky; z-index: 8; top: 0; height: 52px; padding: 8px 10px; color: #6f6b7f; background: rgba(250,250,253,.97); backdrop-filter: blur(8px); font-size: .69rem; font-weight: 850; text-align: center; text-transform: capitalize; }
    .hourly-calendar thead th:first-child { z-index: 10; left: 0; width: 104px; color: var(--violet); }
    .hourly-calendar tbody th { position: sticky; z-index: 5; left: 0; width: 104px; height: 34px; padding: 4px 9px; color: #9692a3; background: #fbfbfd; font-size: .58rem; font-weight: 750; text-align: right; }
    .hourly-calendar td { position: relative; height: 34px; padding: 3px; background: rgba(255,255,255,.88); vertical-align: top; }
    .hourly-calendar th:last-child, .hourly-calendar td:last-child { border-right: 0; }
    .hourly-calendar thead th.is-today { color: var(--violet-dark); background: #edeaff; }
    .hourly-calendar td.is-today { background: rgba(239,237,255,.42); }
    .hourly-calendar td.is-current-time::before { position: absolute; z-index: 4; top: -1px; right: 0; left: 0; height: 2px; background: #ef5374; content: ''; box-shadow: 0 0 8px rgba(239,83,116,.35); }
    .hourly-calendar td.is-current-time::after { position: absolute; z-index: 5; top: -4px; left: -4px; width: 8px; height: 8px; border-radius: 50%; background: #ef5374; content: ''; }
    .hourly-calendar tr.is-hour-start > th, .hourly-calendar tr.is-hour-start > td { border-top: 2px solid #c8c4d7; }
    .hourly-calendar tr.is-hour-start > th { color: var(--ink); background: #f5f4f9; font-weight: 900; }
    .hourly-calendar tr.is-half-hour > th, .hourly-calendar tr.is-half-hour > td { border-top-color: #dfdde7; }
    .calendar-events { display: grid; gap: 3px; }
    .hourly-calendar.is-day-lanes { min-width: max(100%, calc(104px + var(--day-lane-count, 1) * 150px)); }
    .calendar-events--lanes { grid-template-columns: repeat(var(--lane-count, 1), minmax(140px, 1fr)); grid-auto-flow: row; }
    .calendar-events--lanes .calendar-event { grid-row: 1; }
    .calendar-event { display: grid; min-width: 0; gap: 1px; border-left: 3px solid var(--event-status-color, var(--status-busy)); border-radius: 6px; padding: 4px 5px; color: var(--ink); background: color-mix(in srgb, var(--event-status-color, var(--status-busy)) 10%, #fff); font-size: .58rem; line-height: 1.2; }
    .calendar-event strong, .calendar-event span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .calendar-event strong { color: color-mix(in srgb, var(--event-status-color, var(--status-busy)) 82%, #17152b); font-size: .61rem; }
    .calendar-event--lesson { --event-status-color: var(--status-lesson); }
    .calendar-event--free { --event-status-color: var(--status-free); }
    .calendar-event--canceled { --event-status-color: var(--status-canceled); }
    .calendar-event--unknown { --event-status-color: var(--status-busy); }
    .calendar-event.continues-before { margin-top: -4px; border-top: 0; border-radius: 0 0 6px 6px; padding-top: 3px; }
    .calendar-event.continues-after { margin-bottom: -4px; border-radius: 6px 6px 0 0; padding-bottom: 3px; }
    .calendar-event.continues-before.continues-after { border-radius: 0; }
    .calendar-event.continues-before strong:empty, .calendar-event.continues-before span:empty { display: none; }
    .calendar-event.continues-before { min-height: 27px; }
    .calendar-event--free.continues-before, .calendar-event--free.continues-after { box-shadow: inset 3px 0 0 currentColor; }
    .more-items-button { width: 100%; border: 0; border-radius: 7px; padding: 4px 6px; color: var(--violet-dark); background: #f1efff; cursor: pointer; font-size: .61rem; font-weight: 800; text-align: center; }
    .more-items-button:hover { background: #e8e4ff; }
    [hidden] { display: none !important; }

    .schedule-card, .panel { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
    .schedule-card { overflow: hidden; }
    .schedule-card__header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 22px; }
    .schedule-card__header h2 { margin-bottom: 3px; }
    .schedule-card__header p { font-size: .72rem; }
    .legend { display: flex; flex-wrap: wrap; gap: 14px; color: var(--muted); font-size: .68rem; }
    .legend span { display: inline-flex; align-items: center; gap: 5px; }
    .legend__dot { width: 7px; height: 7px; border-radius: 50%; background: #d7d5df; }
    .legend__dot--free { background: var(--violet); }
    .legend__dot--lesson { background: var(--success); }
    .legend__dot--under { background: var(--warning); }
    .legend__dot--ok { background: var(--success); }
    .legend__dot--over { background: var(--danger); }
    .schedule-scroll { max-height: 75vh; overflow: auto; border-top: 1px solid var(--line); }
    .schedule-table { width: 100%; min-width: 1110px; border-collapse: separate; border-spacing: 0; font-size: .76rem; }
    .schedule-table th { height: 46px; color: var(--muted); background: #fafafd; font-size: .67rem; font-weight: 800; letter-spacing: .035em; text-align: left; text-transform: uppercase; }
    .schedule-table thead th { position: sticky; z-index: 6; top: 0; background: rgba(250,250,253,.97); backdrop-filter: blur(8px); }
    .schedule-table th, .schedule-table td { border-bottom: 1px solid var(--line); border-right: 1px solid var(--line); padding: 10px; vertical-align: top; }
    .schedule-table th:last-child, .schedule-table td:last-child { border-right: 0; }
    .schedule-table tbody tr:last-child th, .schedule-table tbody tr:last-child td { border-bottom: 0; }
    .schedule-table thead th:first-child, .schedule-table tbody th { position: sticky; z-index: 3; left: 0; min-width: 190px; max-width: 190px; background: #fff; box-shadow: 8px 0 15px -16px rgba(20,16,44,.6); }
    .schedule-table thead th:first-child { z-index: 4; background: #fafafd; }
    .schedule-table thead th:first-child { z-index: 8; top: 0; }
    .schedule-table thead th:not(:first-child):not(:last-child) { min-width: 112px; text-align: center; }
    .schedule-table thead th:last-child { min-width: 145px; }
    .teacher-cell { display: flex; align-items: center; gap: 10px; text-align: left; }
    .teacher-cell__color { width: 9px; height: 40px; flex: 0 0 auto; border-radius: 6px; background: var(--teacher-color, var(--violet)); }
    .teacher-cell__copy { display: grid; gap: 4px; }
    .teacher-cell__copy strong { color: var(--ink); font-size: .79rem; }
    .teacher-cell__copy span { color: var(--muted); font-size: .65rem; font-weight: 500; }
    .day-cell { min-height: 61px; }
    .day-cell.is-empty { display: grid; place-items: center; color: #b4b1be; background: repeating-linear-gradient(-45deg, #fff, #fff 5px, #fbfafc 5px, #fbfafc 10px); }
    .day-cell__empty { font-size: .68rem; }
    .schedule-table th.is-today { color: var(--violet-dark); background: #edeaff; }
    .schedule-table td.is-today { background: rgba(239,237,255,.36); }
    .lesson-list { display: grid; gap: 5px; }
    .lesson-pill { display: flex; align-items: center; justify-content: space-between; gap: 6px; border-radius: 7px; padding: 5px 7px; color: #4e4965; background: #f3f2f8; }
    .lesson-pill strong { color: var(--ink); font-size: .67rem; }
    .lesson-pill span { overflow: hidden; font-size: .62rem; text-overflow: ellipsis; white-space: nowrap; }
    .lesson-pill--lesson { color: #176c50; background: var(--success-soft); }
    .lesson-pill--free { color: var(--violet-dark); background: var(--violet-soft); }
    .lesson-pill--canceled { color: #a52c45; background: var(--danger-soft); }
    .lesson-pill--unknown { color: #625f71; background: #f0eff4; }
    .lesson-pill--lesson strong { color: #125f45; }
    .lesson-pill--free strong { color: var(--violet-dark); }
    .lesson-pill--canceled strong { color: #a52c45; }
    .lesson-more { color: var(--muted); font-size: .62rem; text-align: center; }
    .result-cell { vertical-align: middle !important; }
    .result-summary { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; }
    .result-summary__total { grid-column: 1 / -1; font-size: .7rem; }
    .result-summary__total strong { display: inline-block; margin-right: 4px; font-size: 1rem; }
    .result-summary span { color: var(--muted); font-size: .61rem; }
    .delta-pill { grid-column: 1 / -1; width: max-content; border-radius: 999px; padding: 4px 7px; font-size: .63rem; font-weight: 800; }
    .delta-pill--under { color: var(--warning); background: var(--warning-soft); }
    .delta-pill--ok { color: var(--success); background: var(--success-soft); }
    .delta-pill--over { color: var(--danger); background: var(--danger-soft); }
    .loading-cell { height: 180px; color: var(--muted); text-align: center; vertical-align: middle !important; }
    .empty-state, .empty-panel { display: grid; justify-items: center; gap: 6px; padding: 42px 20px; color: var(--muted); text-align: center; }
    .empty-state strong, .empty-panel strong { color: var(--ink); }

    .admin-grid { display: grid; grid-template-columns: minmax(290px, .72fr) minmax(440px, 1.28fr); align-items: start; gap: 18px; }
    .panel { padding: 22px; }
    .panel__header { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
    .count-badge { display: grid; min-width: 29px; height: 29px; place-items: center; border-radius: 9px; color: var(--violet); background: var(--violet-soft); font-size: .75rem; font-weight: 800; }
    .user-list { display: grid; }
    .user-row { position: relative; display: grid; grid-template-columns: 36px minmax(120px, 1fr) auto 42px; align-items: center; gap: 12px; border-top: 1px solid var(--line); padding: 14px 0; }
    .user-row:first-child { border-top: 0; padding-top: 0; }
    .user-row:last-child { padding-bottom: 0; }
    .user-row.is-disabled, .teacher-card.is-disabled { opacity: .58; }
    .user-row__main { display: grid; min-width: 0; gap: 3px; }
    .user-row__main strong, .user-row__main span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .user-row__main strong { font-size: .82rem; }
    .user-row__main span { color: var(--muted); font-size: .68rem; }
    .status-pill { border-radius: 999px; padding: 5px 8px; color: var(--muted); background: #f0eff4; font-size: .62rem; font-weight: 800; }
    .status-pill--active { color: var(--success); background: var(--success-soft); }
    .row-menu { position: relative; }
    .row-menu summary { list-style: none; }
    .row-menu summary::-webkit-details-marker { display: none; }
    .row-menu__popover { position: absolute; z-index: 10; top: 48px; right: 0; display: grid; width: 280px; gap: 12px; border: 1px solid var(--line); border-radius: 13px; padding: 12px; background: #fff; box-shadow: 0 16px 40px rgba(24,21,50,.15); }
    .mini-form { display: grid; gap: 8px; }
    .field small { color: var(--muted); font-size: .61rem; line-height: 1.4; }
    .password-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; }
    .password-actions .button { width: 100%; }

    .connection-state { display: inline-flex; align-items: center; gap: 7px; border-radius: 999px; padding: 8px 11px; color: var(--warning); background: var(--warning-soft); font-size: .69rem; font-weight: 800; }
    .connection-state i { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
    .connection-state.is-ready { color: var(--success); background: var(--success-soft); }
    .teacher-create { margin-bottom: 18px; }
    .teacher-filter { display: grid; gap: 16px; margin-bottom: 18px; }
    .teacher-filter__heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
    .teacher-filter__controls { display: grid; grid-template-columns: minmax(240px, 1.5fr) minmax(180px, .7fr); gap: 10px; }
    .teacher-filter__controls .field input, .teacher-filter__controls .field select { height: 42px; }
    .teacher-filter__result { color: var(--muted); font-size: .67rem; font-weight: 750; }
    .teacher-filter__empty { border: 1px dashed var(--line); border-radius: 16px; background: #fff; }
    .taxonomy-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 14px; margin-bottom: 18px; }
    .taxonomy-card { display: grid; align-content: start; gap: 16px; }
    .taxonomy-form { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 9px; }
    .taxonomy-chips { display: flex; max-height: 180px; align-content: flex-start; align-items: flex-start; flex-wrap: wrap; gap: 6px; overflow: auto; scrollbar-width: thin; }
    .taxonomy-chips span { border-radius: 999px; padding: 6px 9px; color: var(--violet-dark); background: var(--violet-soft); font-size: .65rem; font-weight: 800; }
    .teacher-list { display: grid; gap: 14px; }
    .teacher-card { position: relative; }
    .teacher-card__identity { display: grid; grid-template-columns: 10px minmax(0, 1fr) auto; align-items: center; gap: 12px; margin-bottom: 20px; }
    .teacher-color { width: 9px; height: 42px; border-radius: 6px; background: var(--teacher-color); }
    .teacher-card__identity h2 { margin-bottom: 2px; }
    .teacher-card__identity p { color: var(--muted); font-size: .7rem; }
    .teacher-form { display: grid; grid-template-columns: minmax(150px, 1fr) 110px 72px minmax(240px, 1.7fr) auto; align-items: end; gap: 10px; }
    .teacher-form--create { grid-template-columns: minmax(150px, 1fr) 120px 72px minmax(260px, 1.8fr) auto; }
    .teacher-form .field > span { font-size: .68rem; }
    .teacher-form .field input { height: 40px; font-size: .76rem; }
    .language-assignment { grid-column: 1 / -1; min-width: 0; border: 1px solid var(--line); border-radius: 13px; padding: 12px; }
    .language-assignment legend { padding: 0 6px; color: #4d4a61; font-size: .7rem; font-weight: 800; }
    .language-assignment > p { margin: 0 0 10px; color: var(--muted); font-size: .66rem; }
    .language-assignment__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 7px; }
    .language-assignment__item { display: grid; grid-template-columns: minmax(0, 1fr) minmax(90px, .75fr); align-items: center; gap: 7px; border-radius: 10px; padding: 7px 8px; background: #f8f7fb; }
    .language-assignment__item > span { display: flex; min-width: 0; align-items: center; gap: 6px; font-size: .68rem; font-weight: 750; }
    .language-assignment__item input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--violet); }
    .language-assignment__item > input[type="text"] { width: 100%; height: 33px; min-width: 0; border: 1px solid var(--line); border-radius: 8px; padding: 0 7px; color: var(--ink); background: #fff; font-size: .65rem; }
    .teacher-card__toggle { margin-top: 12px; text-align: right; }

    .sync-grid { display: grid; grid-template-columns: minmax(300px, .8fr) minmax(420px, 1.2fr); align-items: stretch; gap: 18px; margin-bottom: 18px; }
    .sync-action { display: flex; flex-direction: column; }
    .privacy-note { display: grid; gap: 5px; margin-top: 22px; border-radius: 13px; padding: 13px 14px; color: #615b8c; background: var(--violet-soft); }
    .privacy-note strong { color: var(--violet-dark); font-size: .75rem; }
    .privacy-note span { font-size: .7rem; line-height: 1.5; }
    .sync-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; margin-bottom: 22px; }
    .sync-metrics article { display: grid; gap: 5px; border: 1px solid var(--line); border-radius: 13px; padding: 14px; background: #fafafd; }
    .sync-metrics span { color: var(--muted); font-size: .66rem; }
    .sync-metrics strong { overflow: hidden; font-size: 1.05rem; text-overflow: ellipsis; white-space: nowrap; }
    .sync-history { margin-top: 0; }
    .run-list { display: grid; }
    .run-row { display: grid; grid-template-columns: minmax(180px, 1fr) auto 90px 90px; align-items: center; gap: 16px; border-top: 1px solid var(--line); padding: 13px 0; }
    .run-row:first-child { border-top: 0; padding-top: 0; }
    .run-row:last-child { padding-bottom: 0; }
    .run-row > div:first-child, .run-row__numbers { display: grid; gap: 3px; }
    .run-row > div:first-child strong { font-size: .78rem; }
    .run-row > div:first-child span, .run-row__numbers span { color: var(--muted); font-size: .65rem; }
    .run-row__numbers { text-align: right; }
    .run-row__numbers strong { font-size: .8rem; }
    .run-status { width: max-content; border-radius: 999px; padding: 5px 8px; color: var(--warning); background: var(--warning-soft); font-size: .62rem; font-weight: 800; }
    .run-status--completed { color: var(--success); background: var(--success-soft); }
    .run-status--running { color: var(--blue); background: var(--blue-soft); }
    .run-issues { grid-column: 1 / -1; border: 1px solid var(--line); border-radius: 12px; background: #fafafd; }
    .run-issues summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 10px 12px; color: var(--violet-dark); cursor: pointer; font-size: .68rem; font-weight: 850; list-style: none; }
    .run-issues summary::-webkit-details-marker { display: none; }
    .run-issues summary span { display: grid; min-width: 24px; height: 24px; place-items: center; border-radius: 999px; color: #fff; background: var(--violet); font-size: .6rem; }
    .run-issues__list { display: grid; max-height: 360px; overflow-y: auto; border-top: 1px solid var(--line); padding: 7px; scrollbar-width: thin; }
    .run-issue { display: grid; grid-template-columns: minmax(150px, .8fr) auto minmax(180px, 1.2fr); align-items: center; gap: 10px; border-radius: 9px; padding: 8px; }
    .run-issue:nth-child(even) { background: #fff; }
    .run-issue strong { overflow: hidden; font-size: .68rem; text-overflow: ellipsis; white-space: nowrap; }
    .run-issue small { overflow-wrap: anywhere; color: var(--muted); font-size: .6rem; }
    .run-issue__status { width: max-content; border-radius: 999px; padding: 5px 7px; color: var(--warning); background: var(--warning-soft); font-size: .57rem; font-weight: 850; }
    .run-issue__status--access_denied, .run-issue__status--not_found, .run-issue__status--error { color: var(--danger); background: var(--danger-soft); }
    .run-issue__status--temporary { color: var(--blue); background: var(--blue-soft); }

    .sync-loader { width: min(90vw, 430px); max-width: none; border: 0; padding: 0; color: var(--ink); background: transparent; }
    .sync-loader::backdrop { background: rgba(20, 17, 43, .72); backdrop-filter: blur(4px); }
    .sync-loader__card { display: grid; justify-items: center; gap: 22px; border: 1px solid rgba(255, 255, 255, .55); border-radius: 24px; padding: 34px 30px; background: #fff; box-shadow: 0 28px 80px rgba(13, 10, 35, .3); text-align: center; }
    .sync-loader__card > div { display: grid; gap: 8px; }
    .sync-loader__spinner { width: 58px; height: 58px; border: 6px solid var(--violet-soft); border-top-color: var(--violet); border-radius: 50%; animation: sync-loader-spin .8s linear infinite; }
    .sync-loader__notice { border-radius: 999px; padding: 7px 11px; color: var(--violet-dark); background: var(--violet-soft); font-size: .7rem; font-weight: 800; }
    body.is-syncing { overflow: hidden; cursor: wait; }

    .status-settings { max-width: 980px; }
    .status-settings .panel__header .muted { max-width: 620px; margin-top: 6px; font-size: .72rem; }
    .settings-section { min-width: 0; border: 0; padding: 0; }
    .settings-section legend { margin-bottom: 10px; color: #4d4a61; font-size: .72rem; font-weight: 850; }
    .sync-frequency-setting { display: grid; grid-template-columns: 48px minmax(0, 1fr) minmax(190px, 240px); align-items: center; gap: 13px; border: 1px solid var(--line); border-radius: 15px; padding: 13px; background: #fafafd; }
    .sync-frequency-setting__icon { display: grid; width: 48px; height: 48px; place-items: center; border-radius: 13px; color: var(--violet-dark); background: var(--violet-soft); font-size: 1.35rem; font-weight: 800; }
    .sync-frequency-setting__copy { display: grid; min-width: 0; gap: 4px; }
    .sync-frequency-setting__copy strong { font-size: .78rem; }
    .sync-frequency-setting__copy small { color: var(--muted); font-size: .64rem; line-height: 1.45; }
    .status-color-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
    .status-color-card { display: grid; grid-template-columns: 48px minmax(0, 1fr) 54px; align-items: center; gap: 13px; border: 1px solid var(--line); border-radius: 15px; padding: 13px; background: #fafafd; cursor: pointer; }
    .status-color-card:focus-within { border-color: color-mix(in srgb, var(--preview-color) 55%, var(--line)); box-shadow: 0 0 0 3px color-mix(in srgb, var(--preview-color) 14%, transparent); }
    .status-color-card__preview { display: grid; width: 48px; height: 48px; place-items: center; border-radius: 13px; background: color-mix(in srgb, var(--preview-color) 12%, #fff); }
    .status-color-card__preview i { width: 8px; height: 31px; border-radius: 999px; background: var(--preview-color); }
    .status-color-card__copy { display: grid; min-width: 0; gap: 4px; }
    .status-color-card__copy strong { font-size: .78rem; }
    .status-color-card__copy small { overflow: hidden; color: var(--muted); font-size: .64rem; text-overflow: ellipsis; white-space: nowrap; }
    .status-color-card input[type="color"] { width: 54px; height: 42px; border: 1px solid var(--line); border-radius: 10px; padding: 4px; background: #fff; cursor: pointer; }
    .settings-actions { display: flex; justify-content: flex-end; }

    @keyframes sync-loader-spin { to { transform: rotate(360deg); } }
}

@layer utilities {
    .visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
}

@media (max-width: 1180px) {
    .dashboard-workspace { grid-template-columns: 1fr; }
    .teacher-browser { position: static; max-height: 330px; }
    .teacher-form, .teacher-form--create { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .teacher-form .field--wide { grid-column: span 2; }
    .teacher-form__submit { width: 100%; align-self: end; }
}

@media (max-width: 900px) {
    .sidebar { position: static; width: auto; min-height: auto; padding: 16px 20px 12px; }
    .sidebar__brand-stack { align-self: flex-start; }
    .side-nav { display: flex; overflow-x: auto; margin-top: 16px; padding-bottom: 4px; scrollbar-width: thin; }
    .side-nav__label { display: none; }
    .side-nav__item { flex: 0 0 auto; }
    .sidebar__account { position: absolute; top: 13px; right: 18px; border: 0; padding: 0; }
    .sidebar__account-copy { display: none; }
    .main-content { min-width: 0; margin-left: 0; padding: 28px 20px 44px; }
    .admin-grid { grid-template-columns: 1fr; }
    .taxonomy-grid { grid-template-columns: 1fr; }
    .sync-grid { grid-template-columns: 1fr; }
    .week-overview-card__description { max-width: 440px; }
}

@media (max-width: 700px) {
    .status-color-grid { grid-template-columns: 1fr; }
    .sync-frequency-setting { grid-template-columns: 42px minmax(0, 1fr); }
    .sync-frequency-setting__icon { width: 42px; height: 42px; }
    .sync-frequency-setting .field { grid-column: 1 / -1; }
    .auth-shell { grid-template-columns: 1fr; }
    .auth-intro { min-height: 240px; padding: 28px; }
    .auth-intro__content { margin: auto 0 0; }
    .auth-intro h1 { margin-bottom: 12px; font-size: 2.3rem; }
    .auth-intro__content > p:last-child, .auth-intro__note { display: none; }
    .auth-panel { padding: 38px 24px; }
    .mobile-menu-toggle { position: absolute; top: 12px; right: 20px; display: grid; }
    .sidebar[data-menu-enhanced="true"] .side-nav { display: none; }
    .sidebar[data-menu-enhanced="true"].is-menu-open .side-nav { display: grid; overflow: visible; width: 100%; gap: 5px; padding: 0; }
    .sidebar.is-menu-open .side-nav__item { width: 100%; }
    .sidebar[data-menu-enhanced="true"] .sidebar__account { display: none; }
    .sidebar[data-menu-enhanced="true"].is-menu-open .sidebar__account { position: static; display: grid; margin-top: 12px; border-top: 1px solid rgba(255,255,255,.08); padding-top: 14px; }
    .sidebar[data-menu-enhanced="true"].is-menu-open .sidebar__account-copy { display: grid; }
    .page-header { display: grid; gap: 18px; margin-bottom: 22px; }
    .page-header > * { min-width: 0; }
    .connection-state { width: max-content; max-width: 100%; white-space: normal; }
    .week-controls { width: 100%; }
    .week-picker { min-width: 0; flex: 1; }
    .week-controls .button { display: none; }
    .summary-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .dashboard-view-tabs { display: flex; width: 100%; overflow-x: auto; }
    .dashboard-view-tabs__button { min-width: 0; flex: 1 0 auto; padding-inline: 14px; }
    .schedule-card__header { align-items: flex-start; flex-direction: column; }
    .week-overview-card .schedule-card__header { align-items: flex-start; padding: 17px 16px 14px; }
    .week-overview-card__description { max-width: none; text-align: left; }
    .week-language-filter { padding: 0 14px 14px; }
    .week-language-filter__button { min-height: 40px; }
    .week-board { grid-template-columns: repeat(7, minmax(166px, 1fr)); max-height: 68vh; }
    .week-day { min-width: 166px; }
    .hourly-card__header { flex-direction: column; }
    .calendar-mode { width: 100%; }
    .calendar-mode__button { flex: 1; }
    .calendar-identity { grid-template-columns: 10px minmax(0, 1fr); margin-inline: 14px; }
    .calendar-identity__metrics { grid-column: 1 / -1; }
    .calendar-day-picker { margin-inline: 14px; }
    .calendar-legend { padding-inline: 14px; }
    .hourly-scroll { max-height: 68vh; }
    .hourly-calendar:not(.is-day-lanes):has(thead th:nth-child(2):last-child) { min-width: 100%; }
    .hourly-calendar:has(thead th:nth-child(2):last-child) thead th:first-child,
    .hourly-calendar:has(thead th:nth-child(2):last-child) tbody th { width: 92px; }
    .teacher-form, .teacher-form--create { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .teacher-form .field--wide { grid-column: 1 / -1; }
    .teacher-form__submit { width: 100%; }
    .run-row { grid-template-columns: minmax(150px, 1fr) auto; }
    .run-row__numbers { display: none; }
    .run-issue { grid-template-columns: minmax(120px, 1fr) auto; }
    .run-issue small { grid-column: 1 / -1; }
    .panel { padding: 17px; }
    .panel__header { flex-wrap: wrap; gap: 12px; }
    .row-menu__popover { width: min(300px, calc(100vw - 56px)); }
    .teacher-card__toggle .button { min-height: 42px; }
}

@media (max-width: 480px) {
    .main-content { padding: 22px 14px 38px; }
    .sidebar { padding-inline: 14px; }
    .sidebar__account { right: 14px; }
    .mobile-menu-toggle { right: 14px; }
    .side-nav__item { min-height: 44px; padding-inline: 11px; font-size: .8rem; }
    .page-header h1 { overflow-wrap: anywhere; }
    .week-controls { gap: 6px; }
    .week-controls .icon-button { width: 40px; flex: 0 0 40px; }
    .week-picker { padding-inline: 10px; }
    .week-picker strong { font-size: .74rem; }
    .summary-grid { gap: 9px; }
    .summary-card { padding: 12px; }
    .summary-card__icon { width: 34px; height: 34px; }
    .summary-card span:not(.summary-card__icon) { font-size: .64rem; }
    .summary-card strong { font-size: 1.25rem; }
    .summary-card__arrow { font-size: 1.1rem; }
    .dashboard-view-tabs { margin-bottom: 14px; }
    .week-event { padding-inline: 7px; }
    .teacher-form, .teacher-form--create { grid-template-columns: 1fr; }
    .taxonomy-form { grid-template-columns: 1fr; }
    .teacher-filter__controls { grid-template-columns: 1fr; }
    .language-assignment__grid { grid-template-columns: 1fr; }
    .language-assignment__item { grid-template-columns: 1fr; }
    .teacher-form .field--wide { grid-column: auto; }
    .teacher-card__identity { grid-template-columns: 10px minmax(0, 1fr); align-items: start; }
    .teacher-card__identity .status-pill { grid-column: 2; width: max-content; }
    .teacher-card__toggle { text-align: stretch; }
    .teacher-card__toggle .button { width: 100%; }
    .user-row { grid-template-columns: 36px minmax(90px, 1fr) 38px; }
    .user-row > .status-pill { display: none; }
    .row-menu__popover { position: absolute; right: 0; width: min(290px, calc(100vw - 56px)); }
    .password-actions { grid-template-columns: 1fr; }
    .sync-metrics { grid-template-columns: 1fr; }
    .teacher-browser__header { padding-inline: 15px; }
    .hourly-card__header { padding-inline: 16px; }
    .calendar-identity__metrics { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; }
    .calendar-identity__metrics span { text-align: center; }
    .balance-dialog { width: calc(100% - 18px); max-height: calc(100vh - 18px); border-radius: 18px; }
    .balance-dialog__header { gap: 12px; padding: 19px 16px 15px; }
    .balance-dialog__header h2 { font-size: 1.18rem; }
    .balance-dialog__summary { padding: 10px 16px; }
    .balance-dialog__list { max-height: 62vh; padding: 8px; }
    .balance-teacher { grid-template-columns: 6px minmax(0, 1fr) auto 12px; gap: 9px; padding: 10px 9px; }
    .balance-teacher__copy small { font-size: .57rem; }
    .balance-teacher__amount { min-width: 43px; padding: 5px 7px; }
    .sync-loader__card { gap: 18px; padding: 28px 20px; }
}

@media (max-width: 360px) {
    .main-content { padding-inline: 10px; }
    .summary-card { gap: 9px; }
    .summary-card__icon { width: 31px; height: 31px; }
    .summary-card span:not(.summary-card__icon) { font-size: .59rem; }
    .dashboard-view-tabs__button { padding-inline: 10px; font-size: .69rem; }
    .row-menu__popover { width: calc(100vw - 44px); }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    .sync-loader__spinner { animation-duration: 1.8s; }
}