/* ==========================================
   Website Q&A Assistant
   ========================================== */
.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;
}

.site-assistant {
    width: min(1120px, calc(100% - 40px));
    margin: 0 auto 36px;
}

.site-assistant__panel {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, #f7faff 100%);
    border: 1px solid rgba(15, 26, 43, 0.08);
    border-radius: 24px;
    box-shadow: 0 20px 48px rgba(15, 26, 43, 0.12);
    overflow: hidden;
}

.site-assistant__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 22px 22px 14px;
    border-bottom: 1px solid rgba(15, 26, 43, 0.08);
}

.site-assistant__eyebrow {
    margin: 0 0 6px;
    color: #2f56c9;
    font-size: 0.76rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.site-assistant__header h3 {
    margin: 0;
    font-size: clamp(1.3rem, 2vw, 1.6rem);
    line-height: 1.2;
    color: #0f1a2b;
}

.site-assistant__intro {
    margin: 0;
    padding: 16px 22px 0;
    color: rgba(15, 26, 43, 0.74);
    font-size: 1rem;
    line-height: 1.65;
    max-width: 78ch;
}

.site-assistant__messages {
    padding: 18px 22px 10px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 280px;
    overflow-y: auto;
}

.site-assistant__message {
    max-width: min(760px, 92%);
    border-radius: 18px;
    padding: 13px 15px;
    font-size: 0.96rem;
    line-height: 1.6;
    white-space: pre-line;
}

.site-assistant__message--assistant {
    background: #eef4ff;
    color: #17305e;
    border-top-left-radius: 8px;
}

.site-assistant__message--user {
    margin-left: auto;
    background: #2f56c9;
    color: #fff;
    border-top-right-radius: 8px;
}

.site-assistant__suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 0 22px 16px;
}

.site-assistant__chip {
    border: 1px solid rgba(47, 86, 201, 0.16);
    background: #fff;
    color: #23408a;
    border-radius: 999px;
    padding: 9px 13px;
    font-size: 0.87rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.site-assistant__chip:hover,
.site-assistant__chip:focus-visible {
    background: #eef4ff;
    border-color: rgba(47, 86, 201, 0.3);
    transform: translateY(-1px);
}

.site-assistant__form {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 0 22px 22px;
}

.site-assistant__input {
    width: 100%;
    border: 1px solid rgba(15, 26, 43, 0.15);
    border-radius: 14px;
    padding: 13px 15px;
    font: inherit;
    color: #0f1a2b;
    background: #fff;
}

.site-assistant__input:focus {
    outline: none;
    border-color: rgba(47, 86, 201, 0.55);
    box-shadow: 0 0 0 4px rgba(47, 86, 201, 0.12);
}

.site-assistant__send {
    border: none;
    border-radius: 14px;
    background: #0f1a2b;
    color: #fff;
    padding: 0 20px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.site-assistant__send:hover,
.site-assistant__send:focus-visible {
    background: #22314d;
    transform: translateY(-1px);
}

@media (max-width: 767px) {
    .site-assistant {
        width: min(100%, calc(100% - 24px));
        margin: 0 auto 26px;
    }

    .site-assistant__header {
        padding: 18px 16px 12px;
    }

    .site-assistant__intro,
    .site-assistant__messages,
    .site-assistant__suggestions,
    .site-assistant__form {
        padding-left: 16px;
        padding-right: 16px;
    }

    .site-assistant__intro {
        font-size: 0.94rem;
    }

    .site-assistant__messages {
        max-height: 240px;
    }

    .site-assistant__form {
        grid-template-columns: 1fr;
    }

    .site-assistant__send {
        min-height: 48px;
    }
}