/* =========================================================================
   GROUP CHAT (Multi-Persona) Styles
   ========================================================================= */

/* --- Add Persona Button (in header) --- */
.add-persona-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px dashed var(--border-color, #d1d5db);
    background: transparent;
    color: var(--text-secondary, #6b7280);
    cursor: pointer;
    margin-left: 8px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.add-persona-btn:hover {
    border-color: #6366f1;
    color: #6366f1;
    background: rgba(99, 102, 241, 0.08);
    transform: scale(1.1);
}

/* --- Group Chat Header Indicator --- */
.group-chat-indicator {
    padding: 0;
    margin-bottom: 8px;
}

.group-chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.06), rgba(236, 72, 153, 0.06));
    border: 1px solid rgba(99, 102, 241, 0.15);
    border-radius: 14px;
    backdrop-filter: blur(8px);
}

.group-avatars {
    display: flex;
    align-items: center;
}

.group-avatar-item {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid #6366f1;
    background: var(--surface-bg, #f9fafb);
    flex-shrink: 0;
}

.group-avatar-item:not(:first-child) {
    margin-left: -10px;
}

.group-avatar-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.group-avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: white;
    background: #6366f1;
}

.group-chat-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
    flex: 1;
    min-width: 0;
}

.group-chat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #6366f1;
    opacity: 0.8;
}

.group-chat-names {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary, #1f2937);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.group-chat-close-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: rgba(239, 68, 68, 0.08);
    color: #ef4444;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.group-chat-close-btn:hover {
    background: rgba(239, 68, 68, 0.15);
    transform: scale(1.1);
}

/* --- Group Persona Message Bubbles --- */
.group-persona-message .group-answer-box {
    border-radius: 16px;
    padding: 14px 18px;
    margin-bottom: 6px;
    transition: all 0.25s ease;
}

.group-answer-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.group-answer-header .answer-avatar-container {
    width: 30px;
    height: 30px;
    position: relative;
}

.group-answer-header .answer-avatar,
.group-answer-header .answer-avatar-placeholder {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
}

.group-persona-label {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.group-persona-label .answer-label {
    font-size: 0.8rem;
    font-weight: 700;
}

.persona-reacting-to {
    font-size: 0.7rem;
    color: var(--text-tertiary, #9ca3af);
    font-style: italic;
}

/* Inter-persona replies are slightly indented */
.inter-persona-reply {
    margin-left: 24px;
}

.inter-persona-reply .group-answer-box {
    border-left-style: dashed !important;
    opacity: 0.92;
}

/* --- Group Chat Error --- */
.group-chat-error {
    padding: 12px 16px;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 10px;
    color: #ef4444;
    font-size: 0.85rem;
    margin: 8px 0;
}

/* --- Persona Picker Modal --- */
.persona-picker-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.persona-picker-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
}

.persona-picker-dialog {
    position: relative;
    z-index: 1;
    background: var(--surface-bg, #ffffff);
    border-radius: 20px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.2);
    width: 90%;
    max-width: 420px;
    max-height: 70vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: pickerSlideUp 0.25s ease-out;
}

@keyframes pickerSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.persona-picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 0;
}

.persona-picker-header h3 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary, #1f2937);
}

.persona-picker-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--hover-bg, #f3f4f6);
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text-secondary, #6b7280);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.persona-picker-close:hover {
    background: var(--hover-bg-strong, #e5e7eb);
    color: var(--text-primary, #1f2937);
}

.persona-picker-subtitle {
    padding: 6px 24px 16px;
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-secondary, #9ca3af);
}

.persona-picker-list {
    overflow-y: auto;
    padding: 0 16px 16px;
    flex: 1;
}

.persona-picker-loading,
.persona-picker-empty {
    padding: 32px 16px;
    text-align: center;
    color: var(--text-secondary, #9ca3af);
    font-size: 0.9rem;
}

.persona-picker-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color, #e5e7eb);
    border-radius: 14px;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: 8px;
    text-align: left;
}

.persona-picker-item:hover {
    background: rgba(99, 102, 241, 0.06);
    border-color: rgba(99, 102, 241, 0.25);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.1);
}

.persona-picker-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--border-color, #e5e7eb);
}

.persona-picker-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.persona-avatar-letter {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
}

.persona-picker-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.persona-picker-name {
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--text-primary, #1f2937);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.persona-picker-channel {
    font-size: 0.78rem;
    color: var(--text-secondary, #9ca3af);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.persona-picker-add-icon {
    color: #6366f1;
    opacity: 0;
    transition: opacity 0.2s;
    flex-shrink: 0;
}

.persona-picker-item:hover .persona-picker-add-icon {
    opacity: 1;
}

/* --- Dark Mode Overrides --- */
[data-theme="dark"] .persona-picker-dialog {
    background: var(--surface-bg, #1e1e2e);
}

[data-theme="dark"] .group-chat-header {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.08));
    border-color: rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .group-chat-names {
    color: var(--text-primary, #e2e8f0);
}

[data-theme="dark"] .persona-picker-item {
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .persona-picker-item:hover {
    background: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.35);
}

/* =========================================================================
   @MENTION PICKER UI
   ========================================================================= */

.mention-picker-dropdown {
    position: absolute;
    bottom: 100%;
    left: 16px;
    width: 250px;
    max-height: 300px;
    background: var(--surface-bg, #ffffff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    z-index: 100;
    margin-bottom: 8px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

[data-theme="dark"] .mention-picker-dropdown {
    background: #1e1e2e;
    border-color: rgba(255,255,255,0.1);
}

.mention-picker-header {
    padding: 10px 12px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary, #64748b);
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    background: rgba(0,0,0,0.02);
}

[data-theme="dark"] .mention-picker-header {
    border-color: rgba(255,255,255,0.05);
    background: rgba(0,0,0,0.2);
}

.mention-picker-list {
    flex: 1;
    overflow-y: auto;
    padding: 6px 0;
}

.mention-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    cursor: pointer;
    transition: background 0.1s ease;
}

.mention-item:hover, .mention-item.selected {
    background: rgba(99, 102, 241, 0.1);
}

.mention-item-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

.mention-item-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary, #0f172a);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

[data-theme="dark"] .mention-item-name {
    color: #e2e8f0;
}