.tsi-public-tutor {
    --tsi-aqua: #087f9d;
    --tsi-aqua-dark: #075f75;
    --tsi-ink: #172b34;
    --tsi-muted: #53666e;
    --tsi-gold: #f6c928;
    --tsi-paper: #ffffff;
    bottom: max(20px, env(safe-area-inset-bottom));
    color: var(--tsi-ink);
    font-family: inherit;
    position: fixed;
    right: max(20px, env(safe-area-inset-right));
    z-index: 2147482000;
}

.tsi-public-tutor *,
.tsi-public-tutor *::before,
.tsi-public-tutor *::after {
    box-sizing: border-box;
}

.tsi-public-tutor__launcher {
    align-items: center;
    background: var(--tsi-aqua);
    border: 0;
    border-radius: 999px;
    box-shadow: 0 10px 30px rgba(10, 52, 66, .24);
    color: #fff;
    cursor: pointer;
    display: flex;
    font: inherit;
    font-size: 16px;
    font-weight: 800;
    gap: 10px;
    min-height: 52px;
    padding: 8px 18px 8px 8px;
}

.tsi-public-tutor__launcher:hover,
.tsi-public-tutor__launcher:focus-visible {
    background: var(--tsi-aqua-dark);
    color: #fff;
}

.tsi-public-tutor__launcher:focus-visible,
.tsi-public-tutor button:focus-visible,
.tsi-public-tutor a:focus-visible,
.tsi-public-tutor input:focus-visible {
    outline: 3px solid var(--tsi-gold);
    outline-offset: 3px;
}

.tsi-public-tutor__mark,
.tsi-public-tutor__avatar {
    align-items: center;
    background: var(--tsi-gold);
    border-radius: 50%;
    color: #17303a;
    display: inline-flex;
    flex: 0 0 auto;
    font-size: 11px;
    font-weight: 900;
    height: 38px;
    justify-content: center;
    letter-spacing: -.02em;
    width: 38px;
}

.tsi-public-tutor__panel {
    background: var(--tsi-paper);
    border: 1px solid #bdd3da;
    border-radius: 18px;
    bottom: 66px;
    box-shadow: 0 20px 60px rgba(12, 44, 54, .28);
    display: grid;
    grid-template-rows: auto minmax(140px, 1fr) auto auto auto;
    max-height: min(680px, calc(100vh - 110px));
    overflow: hidden;
    position: absolute;
    right: 0;
    width: min(400px, calc(100vw - 32px));
}

.tsi-public-tutor__panel[hidden] {
    display: none;
}

.tsi-public-tutor__header {
    align-items: center;
    background: linear-gradient(135deg, #edf9fc, #fff9df);
    border-bottom: 1px solid #d7e5e9;
    display: flex;
    justify-content: space-between;
    padding: 14px 16px;
}

.tsi-public-tutor__identity {
    align-items: center;
    display: flex;
    gap: 11px;
}

.tsi-public-tutor__eyebrow {
    color: var(--tsi-aqua-dark);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: .08em;
    margin: 0 0 2px;
    text-transform: uppercase;
}

.tsi-public-tutor__header h2 {
    color: var(--tsi-ink);
    font-size: 19px;
    line-height: 1.2;
    margin: 0;
}

.tsi-public-tutor__close {
    align-items: center;
    background: transparent;
    border: 0;
    border-radius: 50%;
    color: var(--tsi-muted);
    cursor: pointer;
    display: inline-flex;
    font-size: 28px;
    height: 44px;
    justify-content: center;
    line-height: 1;
    padding: 0;
    width: 44px;
}

.tsi-public-tutor__messages {
    background: #f7fafb;
    overflow-y: auto;
    padding: 16px;
}

.tsi-public-tutor__message {
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.45;
    margin: 0 0 11px;
    max-width: 92%;
    padding: 10px 12px;
    white-space: pre-wrap;
}

.tsi-public-tutor__message--assistant {
    background: #fff;
    border: 1px solid #d8e4e8;
    border-bottom-left-radius: 4px;
}

.tsi-public-tutor__message--student {
    background: var(--tsi-aqua);
    border-bottom-right-radius: 4px;
    color: #fff;
    margin-left: auto;
}

.tsi-public-tutor__message--waiting {
    color: var(--tsi-muted);
    font-style: italic;
}

.tsi-public-tutor__actions,
.tsi-public-tutor__feedback {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin: -3px 0 13px;
}

.tsi-public-tutor__actions a,
.tsi-public-tutor__feedback button,
.tsi-public-tutor__quick button {
    background: #fff;
    border: 1px solid #9fc4cf;
    border-radius: 999px;
    color: var(--tsi-aqua-dark);
    cursor: pointer;
    font: inherit;
    font-size: 12px;
    font-weight: 750;
    line-height: 1.25;
    min-height: 36px;
    padding: 7px 11px;
    text-decoration: none;
}

.tsi-public-tutor__feedback span {
    color: var(--tsi-muted);
    flex: 1 0 100%;
    font-size: 12px;
}

.tsi-public-tutor__quick {
    border-top: 1px solid #dce7ea;
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 10px 12px;
    scrollbar-width: thin;
}

.tsi-public-tutor__quick button {
    flex: 0 0 auto;
}

.tsi-public-tutor__form {
    display: grid;
    gap: 8px;
    grid-template-columns: 1fr auto;
    padding: 10px 12px 6px;
}

.tsi-public-tutor__form input {
    background: #fff;
    border: 1px solid #9fb7bf;
    border-radius: 10px;
    color: var(--tsi-ink);
    font: inherit;
    font-size: 14px;
    min-height: 46px;
    min-width: 0;
    padding: 9px 11px;
}

.tsi-public-tutor__form button {
    background: var(--tsi-aqua);
    border: 0;
    border-radius: 10px;
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-size: 14px;
    font-weight: 800;
    min-height: 46px;
    padding: 9px 15px;
}

.tsi-public-tutor__form button:disabled {
    cursor: wait;
    opacity: .65;
}

.tsi-public-tutor__boundary {
    color: var(--tsi-muted);
    font-size: 10px;
    line-height: 1.35;
    margin: 0;
    padding: 0 12px 11px;
}

.tsi-tutor-course-notice {
    background: linear-gradient(135deg, #edf9fc, #fff9df);
    border: 1px solid #bdd3da;
    border-left: 6px solid var(--tsi-gold, #f6c928);
    border-radius: 12px;
    margin: 1.25rem 0;
    padding: 1.25rem;
}

.tsi-tutor-course-notice h2,
.tsi-tutor-course-notice p {
    margin-top: 0;
}

.tsi-tutor-eyebrow {
    color: #075f75;
    font-size: .75rem;
    font-weight: 800;
    letter-spacing: .07em;
    margin-bottom: .3rem;
    text-transform: uppercase;
}

.tsi-public-tutor--embedded {
    bottom: auto;
    position: relative;
    right: auto;
}

.tsi-public-tutor--embedded .tsi-public-tutor__panel {
    bottom: auto;
    margin-top: 10px;
    position: relative;
    right: auto;
}

@media (max-width: 520px) {
    .tsi-public-tutor {
        bottom: max(12px, env(safe-area-inset-bottom));
        right: 12px;
    }

    .tsi-public-tutor__launcher {
        min-height: 50px;
    }

    .tsi-public-tutor__panel {
        bottom: var(--tsi-tutor-panel-bottom, 62px);
        max-height: calc(100dvh - 88px);
        position: fixed;
        right: 12px;
        width: calc(100vw - 24px);
    }
}

@media (prefers-reduced-motion: reduce) {
    .tsi-public-tutor *,
    .tsi-public-tutor *::before,
    .tsi-public-tutor *::after {
        scroll-behavior: auto !important;
        transition: none !important;
    }
}