/* ============================================================
   Agent V2 — Message Bubbles & Chat Elements
   Depends on: agent-v2-tokens.css, theme.css
   ============================================================ */

/* ── Messages Container ────────────────────────────────────── */
.agent-messages {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--md-sys-spacing-3) var(--md-sys-spacing-4);
    flex: 1;
}

/* ── Base Message ───────────────────────────────────────────── */
.agent-msg {
    display: flex;
    gap: var(--md-sys-spacing-3);
    padding: var(--card-padding);
    border-radius: var(--card-radius-lg);
    max-width: 92%;
    animation: slideIn var(--duration-normal) var(--ease-out-spring);
    position: relative;
}

/* ── User Message ───────────────────────────────────────────── */
.agent-msg--user {
    align-self: flex-end;
    flex-direction: row-reverse;
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.12) 0%, rgba(189, 147, 249, 0.08) 100%);
    border: 1px solid rgba(0, 240, 255, 0.25);
    border-radius: var(--card-radius-lg) var(--card-radius-lg) 4px var(--card-radius-lg);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.agent-msg--user .agent-msg__body {
    text-align: right;
    color: var(--md-sys-color-on-surface-strong, #ffffff);
}

/* ── Agent Message ──────────────────────────────────────────── */
.agent-msg--agent {
    align-self: flex-start;
    background: var(--msg-agent-bg);
    border: 1px solid var(--msg-agent-border);
    border-left: 3px solid var(--agent-msg-color, var(--md-sys-color-primary));
    border-radius: var(--card-radius-lg) var(--card-radius-lg) var(--card-radius-lg) 4px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.25);
    overflow: hidden;
}

/* ── System Messages ────────────────────────────────────────── */
.agent-msg--system {
    align-self: center;
    max-width: 85%;
    background: var(--msg-system-bg);
    border: 1px solid var(--msg-system-border);
    border-left: var(--card-status-width) solid var(--status-warning);
    border-radius: 0 var(--card-radius) var(--card-radius) 0;
    padding: var(--card-padding-sm) var(--card-padding);
}

.agent-msg--info {
    border-left-color: var(--status-running);
    background: rgba(0, 240, 255, 0.04);
}

.agent-msg--warning {
    border-left-color: var(--status-warning);
    background: rgba(255, 107, 0, 0.04);
}

.agent-msg--error {
    border-left-color: var(--status-error);
    background: rgba(255, 59, 48, 0.04);
}

.agent-msg--success {
    border-left-color: var(--status-success);
    background: rgba(80, 250, 123, 0.04);
}

/* ── Avatar ─────────────────────────────────────────────────── */
.agent-msg__avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    background: rgba(0, 240, 255, 0.08);
    border: 1.5px solid var(--agent-msg-color, var(--md-sys-color-primary));
    box-shadow: 0 0 8px color-mix(in srgb, var(--agent-msg-color, var(--md-sys-color-primary)) 25%, transparent);
}

/* ── Meta Row ───────────────────────────────────────────────── */
.agent-msg__meta {
    display: flex;
    align-items: center;
    gap: var(--md-sys-spacing-2);
    margin-bottom: 2px;
}

.agent-msg__name {
    font-size: var(--md-sys-typescale-body-small);
    font-weight: 600;
    color: var(--agent-msg-color, var(--md-sys-color-primary));
}

.agent-msg__time {
    font-size: 10px;
    color: var(--md-sys-color-on-surface-variant);
    font-feature-settings: 'tnum';
}

/* ── Message Body ───────────────────────────────────────────── */
.agent-msg__body {
    flex: 1;
    min-width: 0;
    font-size: var(--md-sys-typescale-body-medium);
    line-height: 1.55;
    color: var(--md-sys-color-on-surface);
    word-break: break-word;
}

.agent-msg__body p { margin: 0 0 6px 0; }
.agent-msg__body p:last-child { margin-bottom: 0; }

.agent-msg__body code {
    font-family: 'Fira Code', 'JetBrains Mono', monospace;
    font-size: 0.88em;
    background: rgba(255, 255, 255, 0.05);
    padding: 1px 5px;
    border-radius: 4px;
    border: 1px solid var(--agent-border-subtle);
}

/* ── Status Update (inline) ─────────────────────────────────── */
.agent-status-update {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: var(--md-sys-typescale-body-small);
    color: var(--md-sys-color-on-surface-variant);
    background: var(--agent-surface);
    border: 1px solid var(--agent-border-subtle);
}

.agent-status-update__dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--status-running);
    animation: statusPulse 1.4s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 0.4; transform: scale(0.85); }
    50%      { opacity: 1;   transform: scale(1.1); }
}

.agent-status-update--done .agent-status-update__dot {
    background: var(--status-success);
    animation: none;
}

/* ── Code Block V2 ──────────────────────────────────────────── */
.agent-code-block-v2 {
    border-radius: var(--card-radius);
    border: 1px solid var(--agent-border);
    overflow: hidden;
    margin: 8px 0;
    background: var(--md-sys-color-surface);
}

.agent-code-block-v2__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background: var(--agent-surface-elevated);
    border-bottom: 1px solid var(--agent-border-subtle);
    font-size: 11px;
    gap: 8px;
}

.agent-code-block-v2__header-filename {
    color: var(--md-sys-color-on-surface);
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
}

.agent-code-block-v2__header-lang {
    display: inline-flex;
    padding: 1px 6px;
    border-radius: 4px;
    background: var(--metrics-badge-bg);
    color: var(--metrics-badge-text);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    flex-shrink: 0;
}

.agent-code-block-v2__body {
    overflow-x: auto;
    padding: 10px 12px;
    font-family: 'Fira Code', 'JetBrains Mono', monospace;
    font-size: 12px;
    line-height: 1.55;
    color: var(--md-sys-color-on-surface);
    tab-size: 4;
    white-space: pre;
}

.agent-code-block-v2__actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

.agent-code-block-v2__action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--duration-fast) ease;
}

.agent-code-block-v2__action-btn:hover {
    background: var(--md-sys-color-surface-hover);
    color: var(--md-sys-color-on-surface);
}

/* ── Streaming Cursor ───────────────────────────────────────── */
.stream-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--md-sys-color-primary);
    margin-left: 1px;
    vertical-align: text-bottom;
    animation: cursorBlink 0.8s step-end infinite;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0; }
}

/* ── Reasoning Section ──────────────────────────────────────── */
.agent-reasoning {
    margin: 8px 0;
    border: 1px solid var(--agent-border-subtle);
    border-radius: var(--card-radius);
    background: rgba(189, 147, 249, 0.03);
    overflow: hidden;
    transition: all var(--duration-fast) ease;
}

.agent-reasoning[open] {
    border-color: rgba(189, 147, 249, 0.25);
    background: rgba(189, 147, 249, 0.05);
    box-shadow: 0 4px 16px rgba(189, 147, 249, 0.04);
}

.agent-reasoning__summary {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-family: var(--font-heading);
    font-size: 11px;
    font-weight: 600;
    color: var(--md-sys-color-on-surface-variant);
    cursor: pointer;
    user-select: none;
    list-style: none; /* Hide default arrow */
    outline: none;
    transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}

.agent-reasoning__summary::-webkit-details-marker {
    display: none; /* Hide Chrome default arrow */
}

.agent-reasoning__summary:hover {
    color: var(--md-sys-color-on-surface);
    background: rgba(255, 255, 255, 0.02);
}

.agent-reasoning__summary svg {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    transition: transform var(--duration-fast) ease;
}

.agent-reasoning[open] .agent-reasoning__summary svg {
    transform: rotate(45deg);
    color: #bd93f9;
}

.agent-reasoning__list {
    margin: 0;
    padding: 0 12px 10px;
    list-style: none;
    border-top: 1px solid var(--agent-border-subtle);
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 250px;
    overflow-y: auto;
}

.agent-reasoning__step {
    display: flex;
    gap: 8px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--md-sys-color-on-surface-variant);
    padding: 4px 0;
}

.agent-reasoning__num {
    font-family: 'Fira Code', 'JetBrains Mono', monospace;
    font-weight: 700;
    color: #bd93f9;
    min-width: 14px;
    text-align: right;
}

.agent-reasoning__text {
    flex: 1;
}

/* ── Follow-up Suggestion Chips ─────────────────────────────── */
.agent-followups {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
    padding-top: 4px;
}

.agent-chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 16px;
    border: 1px solid var(--agent-border);
    background: var(--agent-surface);
    color: var(--md-sys-color-on-surface);
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-out-spring);
    white-space: nowrap;
}

.agent-chip:hover {
    border-color: rgba(0, 240, 255, 0.45);
    background: rgba(0, 240, 255, 0.08);
    box-shadow: 0 4px 12px var(--agent-glow);
    transform: translateY(-1px) scale(1.02);
}

.agent-chip:active {
    transform: scale(0.97) translateY(0);
}

/* ── Progress Bar ───────────────────────────────────────────── */
.agent-progress {
    position: relative;
    width: 100%;
    height: 20px;
    background: var(--agent-surface);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--agent-border-subtle);
    margin: 6px 0;
}

.agent-progress__bar {
    height: 100%;
    background: linear-gradient(90deg, var(--md-sys-color-primary), var(--status-delegating));
    border-radius: 10px;
    transition: width var(--duration-normal) var(--ease-out-expo);
}

.agent-progress__label {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    color: var(--md-sys-color-on-surface);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ── Entry Animation ────────────────────────────────────────── */
.agent-msg-enter {
    animation: slideIn var(--duration-normal) var(--ease-out-spring);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Reduced Motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .agent-msg,
    .agent-msg-enter { animation: none; }
    .agent-status-update__dot { animation: none; }
    .stream-cursor { animation: none; opacity: 1; }
    .agent-progress__bar { transition: none; }
}