.usv {
    --usv-border: #dfe4ea;
    --usv-muted: #68707c;
    --usv-bg: #f6f8fa;
    --usv-card: #ffffff;
    --usv-accent: #1d4ed8;
    --usv-accent-soft: #eff6ff;
    font-family: inherit;
    color: inherit;
    max-width: 1180px;
    margin: 1.5rem auto;
}
.usv * { box-sizing: border-box; }
.usv [hidden] { display: none !important; }

.usv-controls {
    display: grid;
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--usv-border);
    border-radius: 16px;
    background: var(--usv-card);
    box-shadow: 0 4px 18px rgba(15, 23, 42, .05);
}
.usv-filter-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(150px, 1fr));
    gap: 12px;
}
.usv-target-grid {
    display: grid;
    grid-template-columns: minmax(220px, 1.2fr) minmax(170px, .8fr) minmax(280px, 1.2fr) minmax(180px, .7fr);
    gap: 12px;
    align-items: end;
}
.usv-mode {
    display: inline-flex;
    width: fit-content;
    padding: 4px;
    gap: 4px;
    border-radius: 11px;
    background: var(--usv-bg);
}
.usv-mode-btn {
    appearance: none;
    border: 0;
    background: transparent;
    padding: 9px 14px;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}
.usv-mode-btn.is-active {
    background: var(--usv-card);
    color: var(--usv-accent);
    box-shadow: 0 1px 5px rgba(15, 23, 42, .1);
}
.usv-field label {
    display: grid;
    gap: 7px;
    font-size: .9rem;
    font-weight: 600;
}
.usv-select {
    width: 100%;
    min-height: 44px;
    padding: 8px 38px 8px 11px;
    border: 1px solid #cbd3dd;
    border-radius: 9px;
    background: #fff;
    color: inherit;
    font: inherit;
}
.usv-select:focus {
    outline: 2px solid color-mix(in srgb, var(--usv-accent) 28%, transparent);
    outline-offset: 1px;
    border-color: var(--usv-accent);
}
.usv-status {
    min-height: 26px;
    padding: 12px 2px 4px;
    color: var(--usv-muted);
    font-size: .95rem;
}

.usv-field-calendar { position: relative; }
.usv-calendar-toggle {
    width: 100%;
    min-height: 44px;
    padding: 8px 12px;
    border: 1px solid #cbd3dd;
    border-radius: 9px;
    background: #fff;
    color: inherit;
    font: inherit;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    text-align: left;
    cursor: pointer;
}
.usv-calendar-toggle:disabled { cursor: not-allowed; opacity: .6; }
.usv-calendar-toggle:focus {
    outline: 2px solid color-mix(in srgb, var(--usv-accent) 28%, transparent);
    outline-offset: 1px;
    border-color: var(--usv-accent);
}
.usv-calendar-toggle-text {
    display: block;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: .95rem;
}
.usv-calendar-toggle-icon { flex: 0 0 auto; font-size: 1rem; }
.usv-calendar-popover {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: 40;
    width: min(360px, 88vw);
}
.usv-teacher-calendar {
    padding: 14px;
    border: 1px solid var(--usv-border);
    border-radius: 14px;
    background: var(--usv-card);
    box-shadow: 0 14px 28px rgba(15, 23, 42, .14);
}
.usv-calendar-toolbar {
    display: grid;
    grid-template-columns: 34px minmax(120px, 1fr) 34px;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}
.usv-calendar-title {
    text-align: center;
    font-size: .98rem;
}
.usv-calendar-nav, .usv-calendar-today, .usv-calendar-all {
    appearance: none;
    min-height: 38px;
    border: 1px solid #cbd3dd;
    border-radius: 9px;
    background: #fff;
    color: inherit;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}
.usv-calendar-nav {
    font-size: 1.25rem;
    line-height: 1;
}
.usv-calendar-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 10px;
}
.usv-calendar-today, .usv-calendar-all {
    flex: 1 1 auto;
    min-height: 34px;
    font-size: .88rem;
}
.usv-calendar-nav:hover, .usv-calendar-today:hover, .usv-calendar-all:hover, .usv-calendar-day:hover {
    border-color: var(--usv-accent);
}
.usv-calendar-weekdays, .usv-calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, minmax(0, 1fr));
    gap: 5px;
}
.usv-calendar-weekdays {
    margin-bottom: 5px;
    color: var(--usv-muted);
    font-size: .72rem;
    font-weight: 700;
    text-align: center;
}
.usv-calendar-day {
    position: relative;
    appearance: none;
    min-height: 40px;
    padding: 4px;
    border: 1px solid transparent;
    border-radius: 9px;
    background: #fff;
    color: inherit;
    cursor: pointer;
    font: inherit;
}
.usv-calendar-day.is-outside { opacity: .38; }
.usv-calendar-day.is-today { border-color: color-mix(in srgb, var(--usv-accent) 42%, var(--usv-border)); }
.usv-calendar-day.has-lessons {
    background: var(--usv-accent-soft);
    color: var(--usv-accent);
    font-weight: 700;
}
.usv-calendar-day.is-selected {
    background: var(--usv-accent);
    color: #fff;
    border-color: var(--usv-accent);
}
.usv-calendar-number { display: block; }
.usv-calendar-dot {
    display: block;
    width: 6px;
    height: 6px;
    margin: 5px auto 0;
    border-radius: 999px;
    background: currentColor;
}
.usv-calendar-help {
    margin-top: 8px;
    color: var(--usv-muted);
    font-size: .8rem;
    line-height: 1.35;
}
.usv-results { display: grid; gap: 22px; }
.usv-day {
    border: 1px solid var(--usv-border);
    border-radius: 16px;
    overflow: hidden;
    background: var(--usv-card);
}
.usv-day.is-today { border-color: color-mix(in srgb, var(--usv-accent) 55%, var(--usv-border)); }
.usv-day-title {
    margin: 0;
    padding: 14px 18px;
    display: flex;
    gap: 10px;
    align-items: center;
    background: var(--usv-bg);
    border-bottom: 1px solid var(--usv-border);
    font-size: 1.08rem;
}
.usv-day-title span {
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--usv-accent-soft);
    color: var(--usv-accent);
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .03em;
}
.usv-day-grid { display: grid; }
.usv-slot {
    display: grid;
    grid-template-columns: 105px minmax(0, 1fr);
    border-bottom: 1px solid var(--usv-border);
}
.usv-slot:last-child { border-bottom: 0; }
.usv-time {
    padding: 16px 14px;
    border-right: 1px solid var(--usv-border);
    background: #fbfcfd;
}
.usv-time strong, .usv-time span { display: block; }
.usv-time strong { font-size: 1rem; }
.usv-time span { color: var(--usv-muted); font-size: .86rem; margin-top: 2px; }
.usv-slot-body { min-width: 0; }
.usv-variant { padding: 12px 16px 14px; border-bottom: 1px dashed var(--usv-border); }
.usv-variant:last-child { border-bottom: 0; }
.usv-variant-label {
    margin-bottom: 7px;
    color: #687386;
    font-size: .72rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .035em;
    line-height: 1.2;
}
.usv-lesson { padding: 10px 0; }
.usv-lesson + .usv-lesson { border-top: 1px solid #eef1f4; }
.usv-lesson-top { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.usv-subject { line-height: 1.35; }
.usv-badges { display: flex; flex-wrap: wrap; gap: 5px; justify-content: flex-end; }
.usv-badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--usv-accent-soft);
    color: var(--usv-accent);
    white-space: nowrap;
    font-size: .75rem;
    font-weight: 700;
}
.usv-badge-secondary { background: #f3f4f6; color: #4b5563; }
.usv-meta { display: flex; gap: 8px 14px; flex-wrap: wrap; margin-top: 5px; color: var(--usv-muted); font-size: .9rem; }
.usv-room::before { content: "•"; margin-right: 8px; color: #a3aab5; }
.usv-empty, .usv-error { padding: 18px; border: 1px solid var(--usv-border); border-radius: 12px; background: var(--usv-bg); }
.usv-error { border-color: #efb8b8; background: #fff5f5; }
.usv-error span { display: inline-block; margin-top: 5px; }
.usv-loader {
    width: 28px;
    height: 28px;
    margin: 18px auto;
    border: 3px solid #dbe2ea;
    border-top-color: var(--usv-accent);
    border-radius: 50%;
    animation: usv-spin .8s linear infinite;
}
@keyframes usv-spin { to { transform: rotate(360deg); } }

.usv-diagnostics { margin-top: 18px; border: 1px dashed var(--usv-border); border-radius: 12px; background: #fbfcfd; overflow: hidden; }
.usv-diagnostics > summary { cursor: pointer; padding: 12px 14px; font-weight: 700; user-select: none; }
.usv-diagnostics > summary span { color: var(--usv-muted); font-size: .8em; font-weight: 600; }
.usv-diagnostic-output {
    margin: 0 14px 12px;
    max-height: 360px;
    overflow: auto;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    padding: 12px;
    border: 1px solid var(--usv-border);
    border-radius: 8px;
    background: #fff;
    color: #20242a;
    font: 12px/1.45 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.usv-diagnostic-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 0 14px 14px; }
.usv-copy-diagnostic { appearance: none; border: 1px solid #cbd3dd; border-radius: 8px; background: #fff; padding: 8px 12px; cursor: pointer; font: inherit; font-weight: 600; }
.usv-copy-status { color: var(--usv-muted); font-size: .9rem; }

@media (max-width: 920px) {
    .usv-filter-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .usv-target-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .usv-field-teacher { grid-column: 1 / -1; }
}
@media (max-width: 720px) {
    .usv-controls { padding: 14px; }
    .usv-calendar-toolbar { grid-template-columns: 38px minmax(0, 1fr) 38px; }
    .usv-calendar-today, .usv-calendar-all { grid-column: span 1; }
    .usv-calendar-today { grid-column: 1 / span 2; }
    .usv-calendar-all { grid-column: 3; }
    .usv-calendar-day { min-height: 44px; padding: 4px 2px; }
    .usv-filter-grid, .usv-target-grid { grid-template-columns: 1fr; }
    .usv-field-teacher { grid-column: 1; }
    .usv-mode { width: 100%; }
    .usv-mode-btn { flex: 1; }
    .usv-slot { grid-template-columns: 82px minmax(0, 1fr); }
    .usv-time { padding: 14px 10px; }
    .usv-variant { padding: 11px 12px 13px; }
    .usv-lesson-top { display: block; }
    .usv-badges { justify-content: flex-start; margin-top: 6px; }
    .usv-room::before { content: ""; margin: 0; }
}

.usv-calendar-number { font-size: .9rem; }

@media (max-width: 900px) {
    .usv-target-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .usv-field-group, .usv-field-teacher { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .usv-filter-grid, .usv-target-grid {
        grid-template-columns: 1fr;
    }
    .usv-calendar-popover {
        left: 0;
        right: auto;
        width: min(360px, calc(100vw - 48px));
    }
}

/* 1.1.9: календарные даты, праздники и быстрые ссылки */
.usv-date-bar {
    margin-top: 14px;
    padding: 11px 14px;
    border: 1px solid var(--usv-border);
    border-radius: 12px;
    background: var(--usv-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}
.usv-date-bar-label { font-size: .98rem; text-transform: capitalize; }
.usv-date-nav {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    flex: 0 0 auto;
}
.usv-date-today, .usv-date-shift {
    appearance: none;
    min-height: 36px;
    border: 1px solid #cbd3dd;
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
}
.usv-date-today { padding: 7px 11px; }
.usv-date-shift {
    width: 38px;
    padding: 5px 8px;
    font-size: 1.12rem;
    line-height: 1;
}
.usv-date-today:hover, .usv-date-shift:hover { border-color: var(--usv-accent); }
.usv-date-today:focus-visible, .usv-date-shift:focus-visible {
    outline: 2px solid var(--usv-accent);
    outline-offset: 2px;
}
.usv-date-today:disabled {
    cursor: default;
    opacity: .6;
    background: #f3f6f9;
}
.usv-empty-state { display: grid; gap: 12px; }
.usv-date-empty { text-align: center; }
.usv-next-lesson {
    appearance: none;
    width: 100%;
    border: 0;
    border-radius: 11px;
    padding: 12px 16px;
    background: var(--usv-accent);
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
}
.usv-next-lesson span { display: block; margin-top: 3px; font-size: .78rem; font-weight: 600; opacity: .88; }
.usv-special-day {
    padding: 20px;
    border: 1px solid var(--usv-border);
    border-radius: 16px;
    background: var(--usv-card);
    text-align: center;
}
.usv-special-day-date {
    margin-bottom: 6px;
    color: var(--usv-muted);
    font-size: .78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.usv-special-day strong { display: block; font-size: 1.2rem; }
.usv-special-day p { margin: 8px 0 0; color: var(--usv-muted); }
.usv-september-card {
    border-color: #f1cf74;
    background: #fffbeb;
}
.usv-september-card strong { color: #8a5a00; }

.usv-september-all-day {
    width: 100%;
}
.usv-september-all-day.is-before-lessons {
    margin-bottom: 18px;
}
.usv-september-all-day.is-only-event {
    min-height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.usv-holiday-card {
    border-color: #f0c4c4;
    background: #fff7f7;
}
.usv-holiday-card strong { color: #a42a2a; }
.usv-special-event-link {
    display: inline-flex;
    margin-top: 12px;
    padding: 9px 14px;
    border-radius: 9px;
    background: var(--usv-accent);
    color: #fff !important;
    text-decoration: none !important;
    font-weight: 800;
}
.usv-calendar-day.is-holiday {
    background: #fff3f3;
    color: #b42318;
    font-weight: 700;
}
.usv-calendar-day.is-holiday.has-lessons { background: #fff3f3; color: #b42318; }
.usv-bottom-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-top: 18px;
}
.usv-bottom-actions.is-single { grid-template-columns: minmax(0, 1fr); }
.usv-bottom-action {
    display: flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border: 1px solid var(--usv-accent);
    border-radius: 11px;
    background: var(--usv-card);
    color: var(--usv-accent) !important;
    text-decoration: none !important;
    text-align: center;
    font-weight: 800;
}
.usv-bottom-action:hover { background: var(--usv-accent-soft); }

@media (max-width: 520px) {
    .usv-date-bar { align-items: flex-start; }
    .usv-bottom-actions { gap: 8px; }
    .usv-bottom-action { padding: 9px 8px; font-size: .88rem; }
}

/* 1.1.14: навигация по календарным дням */
@media (max-width: 520px) {
    .usv-date-bar {
        align-items: center;
        gap: 8px;
    }
    .usv-date-bar-label { min-width: 0; font-size: .9rem; }
    .usv-date-nav { gap: 5px; }
    .usv-date-shift { width: 36px; }
    .usv-date-today { padding-left: 9px; padding-right: 9px; }
}

/* 1.1.15: настроенные кнопки под расписанием видны всегда */
.usv-bottom-actions { margin-top: 16px; }