/* ─── FunFoxMeds chat tab ────────────────────────────────────────────── */
.ffm-chat-tab {
    --ffm-tab-accent: #0c7489;
    --ffm-tab-accent-hover: #0a6275;
    --ffm-tab-bg: #ffffff;
    --ffm-tab-surface: #f7f8fa;
    --ffm-tab-border: #e5e7eb;
    --ffm-tab-text: #111827;
    --ffm-tab-muted: #6b7280;
    --ffm-tab-user-bg: #0c7489;
    --ffm-tab-user-fg: #ffffff;
    --ffm-tab-assistant-bg: #f0f8f9;
    --ffm-tab-error: #dc2626;
    --ffm-tab-radius: 14px;
    --ffm-tab-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);

    width: min(calc(100% - clamp(1rem, 4vw, 3rem)), 96rem);
    max-width: 96rem;
    margin-inline: auto;
    padding: 0;
    min-height: calc(100dvh - 8rem);
    display: flex;
    flex-direction: column;
}

.ffm-chat-tab,
.ffm-chat-tab * {
    box-sizing: border-box;
    letter-spacing: 0;
}

[data-theme="dark"] .ffm-chat-tab {
    --ffm-tab-bg: #1b1f27;
    --ffm-tab-surface: #242a34;
    --ffm-tab-border: #333a46;
    --ffm-tab-text: #e8eaef;
    --ffm-tab-muted: #9aa3b2;
    --ffm-tab-assistant-bg: #1f2a33;
    --ffm-tab-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* ─── Layout ─────────────────────────────────────────────────────────── */
.ffm-chat-tab-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(20rem, 24rem);
    gap: 0;
    flex: 1;
    min-height: 0;
    height: clamp(34rem, calc(100dvh - 11rem), 44rem);
    border: 1px solid var(--ffm-tab-border);
    border-radius: var(--ffm-tab-radius);
    overflow: hidden;
    margin-block: 0.75rem 1rem;
    background: var(--ffm-tab-bg);
    box-shadow: var(--ffm-tab-shadow);
}

@media (max-width: 960px) {
    .ffm-chat-tab-layout {
        grid-template-columns: 1fr;
        grid-template-rows: minmax(30rem, 1fr) auto;
        height: auto;
        min-height: calc(100dvh - 8rem);
    }

    .ffm-chat-tab-rail {
        border-right: none;
        border-left: none;
        border-bottom: 1px solid var(--ffm-tab-border);
        max-height: none;
    }
}

@media (max-width: 640px) {
    .ffm-chat-tab {
        width: calc(100% - 1rem);
        min-height: calc(100dvh - 7rem);
    }

    .ffm-chat-tab-layout {
        border-radius: 10px;
        margin-block: 0.5rem 0.75rem;
    }

    .ffm-chat-tab-chips {
        flex-wrap: nowrap;
        overflow-x: auto;
        scrollbar-width: thin;
    }

    .ffm-tab-chip {
        flex: 0 0 min(84vw, 20rem);
        white-space: normal;
        text-align: left;
    }

    .ffm-chat-tab-composer-footer {
        align-items: flex-start;
        flex-direction: column;
    }
}

/* ─── Stream ──────────────────────────────────────────────────────────── */
.ffm-chat-tab-stream {
    display: flex;
    flex-direction: column;
    min-height: 0;
    padding: 0;
    gap: 0;
    background: var(--ffm-tab-bg);
}

.ffm-chat-tab-messages {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-height: 0;
    padding: clamp(1rem, 2.2vw, 1.5rem);
    scroll-behavior: smooth;
}

.ffm-chat-tab-empty {
    margin: auto;
    color: var(--ffm-tab-muted);
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    text-align: center;
}

.ffm-chat-tab-empty[hidden] {
    display: none;
}

/* ─── Messages ────────────────────────────────────────────────────────── */
.ffm-tab-msg {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    max-width: 88%;
    position: relative;
    font-size: 0.9rem;
    line-height: 1.55;
}

.ffm-tab-msg.user {
    align-self: flex-end;
    align-items: flex-end;
}

.ffm-tab-msg.assistant,
.ffm-tab-msg.system {
    align-self: flex-start;
    align-items: flex-start;
}

.ffm-tab-msg-body {
    padding: 0.6rem 2rem 0.6rem 0.9rem;
    border-radius: 12px;
    white-space: pre-wrap;
    word-break: break-word;
}

.ffm-tab-msg-copy {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    width: 1.45rem;
    height: 1.45rem;
    min-width: 1.45rem;
    min-height: 1.45rem;
    margin: 0;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 50%;
    background: transparent;
    color: currentColor;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.12s ease, background 0.12s ease;
}

.ffm-tab-msg:hover .ffm-tab-msg-copy,
.ffm-tab-msg:focus-within .ffm-tab-msg-copy,
.ffm-tab-msg-copy.copied {
    opacity: 0.72;
}

.ffm-tab-msg-copy:hover,
.ffm-tab-msg-copy.copied {
    background: rgba(15, 23, 42, 0.1);
    opacity: 1;
}

.ffm-tab-msg.user .ffm-tab-msg-copy:hover,
.ffm-tab-msg.user .ffm-tab-msg-copy.copied {
    background: rgba(255, 255, 255, 0.18);
}

.ffm-tab-msg.user .ffm-tab-msg-body {
    background: var(--ffm-tab-user-bg);
    color: var(--ffm-tab-user-fg);
    border-bottom-right-radius: 4px;
}

.ffm-tab-msg.assistant .ffm-tab-msg-body {
    background: var(--ffm-tab-assistant-bg);
    color: var(--ffm-tab-text);
    border-bottom-left-radius: 4px;
}

.ffm-tab-msg.system .ffm-tab-msg-body {
    background: var(--ffm-tab-surface);
    color: var(--ffm-tab-muted);
    font-size: 0.82rem;
    border-radius: 8px;
}

.ffm-tab-msg.error .ffm-tab-msg-body {
    border-left: 3px solid var(--ffm-tab-error);
}

.ffm-tab-msg.streaming .ffm-tab-msg-body::after {
    content: " ▍";
    animation: ffm-blink 0.8s step-end infinite;
}

@keyframes ffm-blink {
    50% { opacity: 0; }
}

/* evidence chips inside assistant bubble */
.ffm-tab-citations {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-top: 0.5rem;
}

.ffm-tab-citation {
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border: 1px solid var(--ffm-tab-border);
    border-radius: 20px;
    color: var(--ffm-tab-accent);
    text-decoration: none;
    background: var(--ffm-tab-surface);
}

.ffm-tab-citation:hover {
    background: var(--ffm-tab-accent);
    color: #fff;
    border-color: var(--ffm-tab-accent);
}

.ffm-tab-msg-disclaimer {
    font-size: 0.72rem;
    color: var(--ffm-tab-muted);
    margin-top: 0.4rem;
}

/* ─── Sample chips ───────────────────────────────────────────────────── */
.ffm-chat-tab-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.75rem clamp(1rem, 2.2vw, 1.5rem);
    border-top: 1px solid var(--ffm-tab-border);
}

.ffm-tab-chip {
    font-size: 0.82rem;
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--ffm-tab-border);
    border-radius: 20px;
    background: var(--ffm-tab-surface);
    color: var(--ffm-tab-text);
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease;
    white-space: nowrap;
    width: auto;
    margin: 0;
}

.ffm-tab-chip:hover {
    background: var(--ffm-tab-accent);
    color: #fff;
    border-color: var(--ffm-tab-accent);
}

/* ─── Composer ───────────────────────────────────────────────────────── */
.ffm-chat-tab-composer {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    padding: 0.85rem clamp(1rem, 2.2vw, 1.5rem) 0.75rem;
    border-top: 1px solid var(--ffm-tab-border);
    background: var(--ffm-tab-bg);
    margin: 0;
}

.ffm-chat-tab-composer-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 2.75rem;
    gap: 0.5rem;
    align-items: flex-end;
}

.ffm-chat-tab-input {
    flex: 1;
    resize: none;
    border: 1px solid var(--ffm-tab-border);
    border-radius: 10px;
    padding: 0.55rem 0.8rem;
    font-size: 0.9rem;
    line-height: 1.4;
    min-height: 2.4rem;
    max-height: 8rem;
    overflow-y: auto;
    background: var(--ffm-tab-surface);
    color: var(--ffm-tab-text);
    margin: 0;
    width: 100%;
    box-sizing: border-box;
    height: auto;
    min-width: 0;
    display: block;
}

.ffm-chat-tab-input:focus {
    outline: 2px solid var(--ffm-tab-accent);
    outline-offset: 2px;
}

#ffm-tab-send.ffm-chat-tab-send,
.ffm-chat-tab .ffm-chat-tab-send[type="submit"] {
    flex: 0 0 2.75rem;
    width: 2.75rem;
    min-width: 2.75rem;
    max-width: 2.75rem;
    height: 2.75rem;
    min-height: 2.75rem;
    border-radius: 50%;
    background: var(--ffm-tab-accent);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.12s ease;
    margin: 0;
    padding: 0;
    line-height: 1;
}

#ffm-tab-send.ffm-chat-tab-send:hover:not(:disabled),
.ffm-chat-tab .ffm-chat-tab-send[type="submit"]:hover:not(:disabled) {
    background: var(--ffm-tab-accent-hover);
}

#ffm-tab-send.ffm-chat-tab-send:disabled,
.ffm-chat-tab .ffm-chat-tab-send[type="submit"]:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.ffm-chat-tab-composer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

/* ─── Status chip ────────────────────────────────────────────────────── */
.ffm-chat-tab-status {
    font-size: 0.75rem;
    color: var(--ffm-tab-muted);
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    background: var(--ffm-tab-surface);
    border: 1px solid var(--ffm-tab-border);
}

.ffm-chat-tab-status[data-state="ready"] {
    color: #16a34a;
    border-color: #86efac;
    background: #f0fdf4;
}

.ffm-chat-tab-status[data-state="loading"] {
    color: #d97706;
    border-color: #fcd34d;
    background: #fffbeb;
}

.ffm-chat-tab-status[data-state="error"] {
    color: var(--ffm-tab-error);
    border-color: #fca5a5;
    background: #fef2f2;
}

[data-theme="dark"] .ffm-chat-tab-status[data-state="ready"] {
    background: #052e16;
    border-color: #166534;
}

[data-theme="dark"] .ffm-chat-tab-status[data-state="loading"] {
    background: #1c1400;
    border-color: #92400e;
}

[data-theme="dark"] .ffm-chat-tab-status[data-state="error"] {
    background: #1f0a0a;
    border-color: #991b1b;
}

.ffm-chat-tab-tools {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.ffm-chat-tab-tool-btn,
.ffm-chat-tab-settings-btn {
    font-size: 0.75rem;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    width: 2rem;
    min-width: 2rem;
    height: 2rem;
    min-height: 2rem;
    line-height: 1.4;
    border-radius: 50%;
    border: 1px solid var(--ffm-tab-border);
    background: var(--ffm-tab-bg);
    color: var(--ffm-tab-muted);
    cursor: pointer;
}

.ffm-chat-tab-tool-btn:hover,
.ffm-chat-tab-settings-btn:hover,
.ffm-chat-tab-tool-btn.copied {
    color: var(--ffm-tab-accent);
    border-color: var(--ffm-tab-accent);
    background: var(--ffm-tab-assistant-bg);
}

/* ─── Disclaimer ─────────────────────────────────────────────────────── */
.ffm-chat-tab-disclaimer {
    font-size: 0.72rem;
    color: var(--ffm-tab-muted);
    text-align: center;
    margin: 0;
    padding-block: 0.35rem;
}

/* ─── Side rail ──────────────────────────────────────────────────────── */
.ffm-chat-tab-rail {
    border-left: 1px solid var(--ffm-tab-border);
    background: var(--ffm-tab-surface);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 0.85rem 1rem;
    gap: 0;
}

.ffm-chat-tab-rail-section {
    border-bottom: 1px solid var(--ffm-tab-border);
    padding-block: 0.7rem;
    margin: 0;
}

.ffm-chat-tab-rail-section:last-child {
    border-bottom: none;
}

.ffm-chat-tab-rail-section > summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ffm-tab-muted);
    text-transform: uppercase;
    cursor: pointer;
    padding: 0.25rem 0;
    list-style: none;
    line-height: 1.3;
}

.ffm-tab-rail-empty {
    font-size: 0.78rem;
    color: var(--ffm-tab-muted);
    margin: 0.5rem 0 0;
    font-style: italic;
}

/* entity chips */
.ffm-tab-entity-group {
    margin-top: 0.5rem;
}

.ffm-tab-entity-label {
    font-size: 0.7rem;
    color: var(--ffm-tab-muted);
    text-transform: uppercase;
    margin-bottom: 0.25rem;
}

.ffm-tab-entity-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.ffm-tab-entity-chip {
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    border: 1px solid var(--ffm-tab-border);
    background: var(--ffm-tab-bg);
    color: var(--ffm-tab-text);
    cursor: pointer;
}

.ffm-tab-entity-chip[data-class="allergy"] {
    border-color: #fca5a5;
    color: #b91c1c;
}

.ffm-tab-entity-chip[data-class="condition"],
.ffm-tab-entity-chip[data-class="symptom"] {
    border-color: #86efac;
    color: #15803d;
}

.ffm-tab-entity-chip[data-class="drug"] {
    border-color: #93c5fd;
    color: #1d4ed8;
}

/* evidence links */
.ffm-tab-evidence-list {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.ffm-tab-evidence-list a {
    font-size: 0.78rem;
    color: var(--ffm-tab-accent);
}

/* drug cards */
.ffm-tab-drug-card {
    border: 1px solid var(--ffm-tab-border);
    border-radius: 8px;
    padding: 0.6rem 0.75rem;
    margin-top: 0.5rem;
    background: var(--ffm-tab-bg);
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.ffm-tab-drug-card-brand {
    font-weight: 600;
    font-size: 0.85rem;
}

.ffm-tab-drug-card-generic {
    font-size: 0.75rem;
    color: var(--ffm-tab-muted);
}

.ffm-tab-drug-card-snippet {
    font-size: 0.75rem;
    color: var(--ffm-tab-text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ffm-tab-drug-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.25rem;
}

.ffm-tab-drug-badge {
    font-size: 0.68rem;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-weight: 600;
}

.ffm-tab-drug-badge.otc {
    background: #dcfce7;
    color: #15803d;
}

.ffm-tab-drug-badge.rx {
    background: #dbeafe;
    color: #1d4ed8;
}

[data-theme="dark"] .ffm-tab-drug-badge.otc {
    background: #052e16;
    color: #4ade80;
}

[data-theme="dark"] .ffm-tab-drug-badge.rx {
    background: #1e3a5f;
    color: #93c5fd;
}

.ffm-tab-drug-card-link {
    font-size: 0.75rem;
    color: var(--ffm-tab-accent);
}

/* ─── Settings dialog ────────────────────────────────────────────────── */
.ffm-chat-tab-settings {
    max-width: 460px;
    width: 90vw;
    padding: 0;
    border: 1px solid var(--ffm-tab-border);
    border-radius: var(--ffm-tab-radius);
    background: var(--ffm-tab-bg);
    color: var(--ffm-tab-text);
    box-shadow: var(--ffm-tab-shadow);
}

.ffm-chat-tab-settings article {
    margin: 0;
    padding: 1rem;
}

.ffm-chat-tab-settings header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.ffm-tab-settings-close {
    margin-left: auto;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--ffm-tab-muted);
    padding: 0.2rem;
    width: auto;
    height: auto;
    line-height: 1;
}

.ffm-tab-settings-close:hover { color: var(--ffm-tab-text); }

.ffm-chat-tab-settings footer {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--ffm-tab-border);
}

.ffm-chat-tab-settings footer button {
    margin: 0;
    padding: 0.45rem 1rem;
    width: auto;
    font-size: 0.85rem;
}

.ffm-tab-model-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.ffm-tab-model-option {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    padding: 0.5rem 0.6rem;
    border: 1px solid var(--ffm-tab-border);
    border-radius: 8px;
    cursor: pointer;
}

.ffm-tab-model-option:has(input:checked) {
    border-color: var(--ffm-tab-accent);
    background: var(--ffm-tab-assistant-bg);
}

.ffm-tab-model-name {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    flex: 1;
    font-size: 0.82rem;
}

.ffm-tab-model-cache {
    font-size: 0.7rem;
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    background: var(--ffm-tab-surface);
    border: 1px solid var(--ffm-tab-border);
    white-space: nowrap;
    align-self: center;
}

.ffm-tab-model-cache.cached {
    background: #dcfce7;
    border-color: #86efac;
    color: #15803d;
}

[data-theme="dark"] .ffm-tab-model-cache.cached {
    background: #052e16;
    border-color: #166534;
    color: #4ade80;
}

/* ─── Allergy warning banner ─────────────────────────────────────────── */
.ffm-tab-allergy-warning {
    font-size: 0.78rem;
    color: #b91c1c;
    padding: 0.3rem 0.5rem;
    border: 1px solid #fca5a5;
    border-radius: 6px;
    background: #fef2f2;
    margin-top: 0.5rem;
}

[data-theme="dark"] .ffm-tab-allergy-warning {
    background: #1f0a0a;
    border-color: #991b1b;
    color: #fca5a5;
}