/* Agent popup widget — Phase A preview shell.
   All tokens reused from css/styles.css. One additional typeface (JetBrains Mono)
   for the transcript/trace area only; nothing else uses it. */

:root {
    --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    --agent-shadow: 0 24px 48px -16px rgba(23, 23, 23, 0.22), 0 4px 12px rgba(23, 23, 23, 0.08);
    --agent-shadow-trigger: 0 12px 24px -10px rgba(23, 23, 23, 0.28);
}

/* ---------- Floating trigger pill ---------- */

.agent-trigger {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 20;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 20px;
    border: 1px solid var(--color-text);
    border-radius: 999px;
    background: var(--color-text);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.92rem;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    box-shadow: var(--agent-shadow-trigger);
    transition: background-color var(--transition), border-color var(--transition), transform var(--transition);
}

.agent-trigger:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.agent-trigger:active {
    transform: translateY(1px);
}

.agent-trigger[aria-expanded="true"] {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.agent-trigger-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.18);
}

.agent-trigger-label {
    letter-spacing: 0.005em;
}

/* ---------- Popup panel ---------- */

.agent-panel {
    position: fixed;
    bottom: 88px;
    right: 24px;
    z-index: 19;
    display: flex;
    flex-direction: column;
    width: min(420px, calc(100vw - 32px));
    max-height: min(640px, calc(100vh - 112px));
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 14px;
    box-shadow: var(--agent-shadow);
    overflow: hidden;
    transform-origin: bottom right;
    animation: agent-panel-in 180ms ease-out;
}

.agent-panel[hidden] {
    display: none;
}

@keyframes agent-panel-in {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.agent-panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--color-border);
}

.agent-panel-titleblock {
    min-width: 0;
}

.agent-panel-eyebrow {
    margin-bottom: 4px;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.agent-panel-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.2;
}

.agent-panel-close {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    margin: -4px -4px 0 0;
    padding: 0;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: var(--color-muted);
    cursor: pointer;
    transition: color var(--transition), background-color var(--transition), border-color var(--transition);
}

.agent-panel-close:hover {
    color: var(--color-text);
    background: var(--color-surface-muted);
    border-color: var(--color-border);
}

/* ---------- Body / transcript ---------- */

.agent-panel-body {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 18px 20px 8px;
}

.agent-transcript {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.agent-turn {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.agent-turn-role {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-soft);
}

.agent-turn p {
    margin: 0;
    color: var(--color-text);
    font-size: 0.94rem;
    line-height: 1.55;
}

.agent-turn-user {
    padding-left: 12px;
    border-left: 2px solid var(--color-border);
}

.agent-turn-user .agent-turn-role {
    color: var(--color-muted);
}

.agent-turn-assistant p {
    color: var(--color-text);
}

.agent-cite {
    display: inline-block;
    margin-left: 4px;
    padding: 1px 6px;
    border-radius: 4px;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    vertical-align: 1px;
}

/* ---------- Trace chips ---------- */

.agent-trace {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin: 6px 0 0;
    padding: 0;
    list-style: none;
}

.agent-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 9px;
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    line-height: 1.4;
    letter-spacing: 0.01em;
}

.agent-chip-glyph {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.78rem;
}

.agent-chip-retrieval {
    background: var(--color-accent-soft);
    color: var(--color-accent);
}

.agent-chip-refusal {
    background: var(--color-surface-muted);
    color: var(--color-muted);
    border: 1px dashed var(--color-border);
}

/* ---------- Coming-soon notice ---------- */

.agent-notice {
    margin-top: 18px;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    background: var(--color-surface-muted);
}

.agent-notice-title {
    margin-bottom: 6px;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.agent-notice p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.86rem;
    line-height: 1.55;
}

.agent-notice p + p {
    margin-top: 6px;
}

.agent-notice a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: var(--color-accent-soft);
    text-underline-offset: 3px;
}

.agent-notice a:hover {
    text-decoration-color: var(--color-accent);
}

/* ---------- Footer / input ---------- */

.agent-panel-footer {
    flex: 0 0 auto;
    padding: 12px 16px 16px;
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.agent-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.agent-input-label {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.agent-input {
    width: 100%;
    min-height: 40px;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.92rem;
    line-height: 1.4;
    transition: border-color var(--transition);
}

.agent-input:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.agent-input:disabled {
    color: var(--color-soft);
    background: var(--color-surface-muted);
    cursor: not-allowed;
}

.agent-form-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.agent-voice-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: transparent;
    color: var(--color-muted);
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition), background-color var(--transition);
}

.agent-voice-btn:hover:not(:disabled) {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background: var(--color-accent-soft);
}

.agent-voice-btn:disabled {
    color: var(--color-soft);
    cursor: not-allowed;
}

.agent-send-btn {
    min-height: 36px;
    padding: 0 16px;
    border: 1px solid var(--color-text);
    border-radius: 8px;
    background: var(--color-text);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    transition: background-color var(--transition), border-color var(--transition);
}

.agent-send-btn:hover:not(:disabled) {
    background: var(--color-accent);
    border-color: var(--color-accent);
}

.agent-send-btn:disabled {
    color: rgba(255, 255, 255, 0.7);
    background: var(--color-soft);
    border-color: var(--color-soft);
    cursor: not-allowed;
}

/* ---------- Mobile: bottom sheet ---------- */

@media (max-width: 600px) {
    .agent-trigger {
        right: 16px;
        bottom: 16px;
    }

    .agent-panel {
        right: 0;
        left: 0;
        bottom: 0;
        width: 100%;
        max-height: 82vh;
        border-radius: 14px 14px 0 0;
        border-bottom: 0;
        transform-origin: bottom center;
    }

    @keyframes agent-panel-in {
        from {
            opacity: 0;
            transform: translateY(16px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

@media (prefers-reduced-motion: reduce) {
    .agent-panel {
        animation: none;
    }
}