/* DeepSeek-style AI Model Workspace */

:root {
    --ds-primary: #4D6BFE;
    --ds-primary-hover: #3d5ae8;
    --ds-primary-light: #EEF1FF;
    --ds-bg: #FFFFFF;
    --ds-sidebar: #F9F9F9;
    --ds-border: #E8E8EF;
    --ds-text: #1B1B1F;
    --ds-text-muted: #8E8EA0;
    --ds-radius-lg: 24px;
    --ds-radius-md: 12px;
    --ds-radius-pill: 999px;
    --ds-sidebar-width: 260px;
    --ds-chat-max-width: 85%;
    --ds-success: #22a06b;
    --ds-danger: #e5484d;
    --ds-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    --ds-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* legacy aliases for shared class names */
    --primary: var(--ds-primary);
    --primary-dark: var(--ds-primary-hover);
    --success: var(--ds-success);
    --danger: var(--ds-danger);
    --bg: var(--ds-bg);
    --bg2: var(--ds-bg);
    --bg3: var(--ds-sidebar);
    --text: var(--ds-text);
    --text2: var(--ds-text-muted);
    --border: var(--ds-border);
    --shadow: var(--ds-shadow);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--ds-bg);
    color: var(--ds-text);
    min-height: 100vh;
    line-height: 1.5;
    overflow: hidden;
}

.hidden { display: none !important; }

/* ── App shell ── */

.ds-app {
    display: flex;
    height: 100vh;
    overflow: hidden;
    background: var(--ds-bg);
}

/* ── Sidebar ── */

.ds-sidebar {
    width: var(--ds-sidebar-width);
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    background: var(--ds-sidebar);
    border-right: 1px solid var(--ds-border);
    transition: width 0.22s ease, transform 0.22s ease;
    z-index: 40;
    min-height: 0;
}

.ds-sidebar.collapsed {
    width: 0;
    overflow: hidden;
    border-right: none;
    pointer-events: none;
}

/* Collapsed sidebar — top-left control strip (DeepSeek-style) */

.ds-collapsed-bar {
    position: absolute;
    top: 14px;
    left: 16px;
    z-index: 25;
    display: flex;
    align-items: center;
    gap: 12px;
}

.ds-collapsed-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.ds-collapsed-actions {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px;
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-pill);
    background: var(--ds-bg);
    box-shadow: var(--ds-shadow);
}

.ds-collapsed-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.ds-collapsed-btn:hover {
    background: var(--ds-sidebar);
    color: var(--ds-text);
}

.ds-app.sidebar-collapsed .chat-main-area {
    padding-top: 56px;
}

.ds-app.sidebar-collapsed .secondary-header {
    padding-top: 56px;
}

.ds-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 10px 6px;
    flex-shrink: 0;
}

.ds-home-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    color: var(--ds-text-muted);
    text-decoration: none;
    flex-shrink: 0;
}

.ds-home-link:hover { color: var(--ds-primary); background: var(--ds-primary-light); }

.ds-brand-text {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.ds-brand-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ds-text);
    letter-spacing: -0.02em;
}

.ds-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
    flex-shrink: 0;
}

.ds-icon-btn:hover { background: rgba(0, 0, 0, 0.06); color: var(--ds-text); }

.ds-icon-btn-sm {
    width: 28px;
    height: 28px;
    border-radius: 6px;
}

/* Nav — horizontal compact tabs */

.ds-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 10px 8px;
    flex-shrink: 0;
}

.ds-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1 1 auto;
    min-width: 0;
    padding: 5px 8px;
    border: none;
    border-radius: var(--ds-radius-pill);
    background: transparent;
    color: var(--ds-text-muted);
    font-size: 0.78rem;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, color 0.15s;
}

.ds-nav-btn:hover { background: rgba(0, 0, 0, 0.04); color: var(--ds-text); }

.ds-nav-btn.active {
    background: var(--ds-primary-light);
    color: var(--ds-primary);
    font-weight: 500;
}

/* Sessions section */

.ds-sessions-section {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    padding: 0 8px;
    overflow: hidden;
}

.ds-sessions-section.hidden { display: none; }

.ds-new-chat {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 8px;
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    background: var(--ds-bg);
    color: var(--ds-text);
    font-size: 0.88rem;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.ds-new-chat:hover {
    border-color: var(--ds-primary);
    box-shadow: 0 0 0 1px rgba(77, 107, 254, 0.15);
}

.session-head-actions {
    display: flex;
    gap: 4px;
    margin-bottom: 6px;
    flex-shrink: 0;
}

#btnBatchMode.active {
    background: var(--ds-primary-light);
    color: var(--ds-primary);
}

.batch-toolbar {
    display: flex;
    gap: 4px;
    padding-bottom: 6px;
    flex-shrink: 0;
}

.session-tree {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    padding-bottom: 8px;
}

.session-group-label {
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--ds-text-muted);
    padding: 10px 8px 4px;
    user-select: none;
}

.session-folder {
    margin-bottom: 0;
    border-radius: 8px;
    overflow: hidden;
}

.folder-row,
.session-row {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 7px 8px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.82rem;
    margin-bottom: 1px;
    border: 1px solid transparent;
    min-width: 0;
    position: relative;
}

.folder-row {
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--ds-text-muted);
}

.folder-row:hover,
.session-row:hover { background: rgba(0, 0, 0, 0.04); }

.session-row.active {
    background: var(--ds-primary-light);
    color: var(--ds-primary);
}

.folder-row-icon {
    color: var(--ds-primary);
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    line-height: 0;
}

.folder-row-icon svg {
    display: block;
    width: 14px;
    height: 14px;
}

.folder-row-head {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    flex: 1;
    max-width: calc(100% - 28px);
}

.folder-row-title {
    flex: 0 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.35;
}

.session-row-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.35;
}

.folder-children { padding: 0 0 0 8px; }
.folder-children.hidden { display: none; }

.folder-children .session-row--nested {
    margin-left: 6px;
    font-size: 0.78rem;
}

.folder-toggle {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    padding: 0;
    border: none;
    background: transparent;
    color: #999;
    cursor: pointer;
    border-radius: 4px;
    line-height: 0;
    transition: transform 0.2s ease;
}

.folder-toggle svg {
    display: block;
    width: 12px;
    height: 12px;
}

.folder-toggle.collapsed { transform: rotate(-90deg); }

.folder-row .session-row-actions {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    padding-left: 14px;
    background: linear-gradient(to right, transparent, var(--ds-sidebar) 12px);
}

.folder-row:hover .session-row-actions {
    background: linear-gradient(to right, transparent, #f0f0f3 12px);
}

.session-row.title-pending .session-row-title {
    color: var(--ds-text-muted);
    font-style: italic;
}

.session-row-actions {
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-shrink: 0;
    gap: 1px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.12s ease;
    z-index: 2;
    padding-left: 14px;
    border-radius: 6px;
    background: linear-gradient(to right, transparent, var(--ds-sidebar) 12px);
}

.folder-row:hover .session-row-actions,
.session-row:hover .session-row-actions,
.session-row.active .session-row-actions {
    opacity: 1;
    pointer-events: auto;
}

.session-row:hover .session-row-actions {
    background: linear-gradient(to right, transparent, #f0f0f3 12px);
}

.folder-row:hover .session-row-actions {
    background: linear-gradient(to right, transparent, #f0f0f3 12px);
}

.session-row.active .session-row-actions {
    background: linear-gradient(to right, transparent, var(--ds-primary-light) 12px);
}

.session-more-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.06);
    color: var(--ds-text-muted);
    cursor: pointer;
    flex-shrink: 0;
    line-height: 0;
}

.session-more-btn:hover {
    background: rgba(77, 107, 254, 0.14);
    color: var(--ds-primary);
}

.session-row.active .session-more-btn {
    background: rgba(255, 255, 255, 0.85);
    color: var(--ds-primary);
}

.session-row.active .session-more-btn:hover {
    background: #fff;
}

.session-context-menu {
    position: fixed;
    z-index: 2000;
    min-width: 148px;
    padding: 6px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 0 1px rgba(0, 0, 0, 0.06);
}

.session-context-menu.hidden { display: none; }

.session-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 9px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    font-size: 0.875rem;
    line-height: 1.2;
    color: var(--ds-text);
    cursor: pointer;
    text-align: left;
}

.session-menu-item:hover { background: rgba(0, 0, 0, 0.04); }

.session-menu-item.danger,
.session-menu-item.danger .session-menu-icon { color: var(--ds-danger); }

.session-menu-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    color: var(--ds-text-muted);
}

.session-menu-icon svg {
    display: block;
    width: 18px;
    height: 18px;
}

.session-menu-label { flex: 1; min-width: 0; }

.session-checkbox { flex-shrink: 0; width: 14px; height: 14px; margin: 0; cursor: pointer; }

/* Sidebar footer */

.ds-sidebar-footer {
    flex-shrink: 0;
    padding: 10px 12px 14px;
    border-top: 1px solid var(--ds-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.ds-account {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.ds-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--ds-primary-light);
    color: var(--ds-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 600;
    flex-shrink: 0;
}

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

.ds-account-email {
    font-size: 0.78rem;
    color: var(--ds-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.quota-pill {
    font-size: 0.68rem;
    padding: 2px 8px;
    border-radius: var(--ds-radius-pill);
    background: var(--ds-bg);
    border: 1px solid var(--ds-border);
    color: var(--ds-text-muted);
    align-self: flex-start;
}

.quota-pill.unlimited {
    background: #e6f7ef;
    color: var(--ds-success);
    border-color: #b8e6d0;
}

.language-select {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
    background: var(--ds-bg);
    font-size: 0.82rem;
    color: var(--ds-text);
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.35);
    z-index: 35;
}

.sidebar-backdrop.hidden { display: none; }

/* ── Main area ── */

.ds-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--ds-bg);
}

.ds-mobile-menu {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 20;
    width: 40px;
    height: 40px;
    border: 1px solid var(--ds-border);
    border-radius: 10px;
    background: var(--ds-bg);
    color: var(--ds-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--ds-shadow);
}

.tab-content {
    display: none;
    flex: 1;
    min-height: 0;
    flex-direction: column;
}

.tab-content.active { display: flex; }

/* ── Chat area ── */

.chat-main-area {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.login-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.88);
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    backdrop-filter: blur(4px);
}

.welcome-screen {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    padding: 24px;
    pointer-events: none;
    z-index: 1;
}

.welcome-screen.hidden { display: none; }

.welcome-screen .mode-pills { pointer-events: auto; }

.welcome-logo { opacity: 0.95; }

.welcome-screen h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--ds-text);
    text-align: center;
}

.mode-pills {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.mode-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-pill);
    background: var(--ds-bg);
    color: var(--ds-text-muted);
    font-size: 0.88rem;
    cursor: pointer;
    transition: all 0.15s;
}

.mode-pill:hover { border-color: var(--ds-primary); color: var(--ds-primary); }

.mode-pill.active {
    background: var(--ds-primary-light);
    border-color: var(--ds-primary);
    color: var(--ds-primary);
}

.message-list {
    flex: 1;
    overflow-y: auto;
    padding: 24px 24px 12px;
    max-width: var(--ds-chat-max-width);
    width: 100%;
    margin: 0 auto;
}

.msg {
    margin-bottom: 20px;
    font-size: 0.92rem;
    word-break: break-word;
}

.msg-role { display: none; }

.msg-user {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.msg-user .msg-body {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 18px 18px 4px 18px;
    background: var(--ds-primary-light);
    color: var(--ds-text);
    white-space: pre-wrap;
}

.msg-assistant {
    padding: 4px 0;
}

.compare-param-panel {
    margin-bottom: 4px;
}

.compare-param-section-title {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--ds-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
}

.compare-param-slot-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 6px;
}

.compare-param-slot-tab {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    padding: 8px 10px;
    border: 1px solid var(--ds-border);
    border-radius: 10px;
    background: var(--ds-bg);
    font-size: 0.78rem;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    color: var(--ds-text);
    min-height: 44px;
}

.compare-param-slot-tab:hover {
    border-color: var(--ds-primary);
}

.compare-param-slot-tab.active {
    border-color: var(--ds-primary);
    background: var(--ds-primary-light);
}

.compare-param-slot-num {
    flex-shrink: 0;
    font-weight: 700;
    color: var(--ds-primary);
    line-height: 1.35;
}

.compare-param-slot-label {
    flex: 1;
    min-width: 0;
    line-height: 1.35;
    word-break: break-word;
    font-size: 0.72rem;
    color: var(--ds-text-muted);
}

.compare-param-slot-tab.active .compare-param-slot-label {
    color: var(--ds-text);
}

.compare-shared-hint {
    margin-top: -4px;
    margin-bottom: 8px;
}

.compare-model-picker {
    position: relative;
    flex: 0 1 auto;
    min-width: 0;
    width: max-content;
    max-width: min(300px, 100%);
}

.compare-picker-trigger {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    width: max-content;
    max-width: min(300px, 100%);
    height: 28px;
    padding: 0 10px 0 12px;
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-pill);
    font-size: 0.78rem;
    line-height: 1;
    font-family: inherit;
    background: var(--ds-bg);
    color: var(--ds-text);
    cursor: pointer;
    text-align: left;
    box-sizing: border-box;
    vertical-align: middle;
}

.compare-picker-trigger:hover {
    border-color: var(--ds-primary);
}

.compare-picker-label {
    flex: 1 1 auto;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.compare-picker-pending {
    color: var(--ds-text-muted);
}

.compare-picker-chevron {
    flex-shrink: 0;
    color: var(--ds-text-muted);
}

.compare-picker-menu {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    z-index: 60;
    width: min(380px, calc(100vw - 32px));
    max-height: min(360px, 55vh);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--ds-border);
    border-radius: 12px;
    background: var(--ds-bg);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
    overflow: hidden;
}

.compare-picker-hint {
    margin: 0;
    padding: 8px 12px 0;
    font-size: 0.68rem;
    color: var(--ds-text-muted);
    line-height: 1.4;
}

.compare-picker-slots {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 8px 10px;
    border-bottom: 1px solid var(--ds-border);
}

.compare-picker-slot {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    padding: 8px;
    border: 1px solid var(--ds-border);
    border-radius: 10px;
    background: var(--ds-bg);
    font-size: 0.72rem;
    text-align: left;
    cursor: pointer;
    min-height: 52px;
}

.compare-picker-slot.active {
    border-color: var(--ds-primary);
    background: var(--ds-primary-light);
}

.compare-slot-num {
    flex-shrink: 0;
    font-weight: 700;
    color: var(--ds-primary);
    line-height: 1.3;
}

.compare-slot-name {
    flex: 1;
    min-width: 0;
    line-height: 1.35;
    word-break: break-word;
    color: var(--ds-text);
}

.compare-picker-slot:not(.active) .compare-slot-name:empty,
.compare-picker-slot .compare-slot-name {
    color: var(--ds-text-muted);
}

.compare-picker-slot.active .compare-slot-name {
    color: var(--ds-text);
}

.compare-slot-clear {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    line-height: 16px;
    text-align: center;
    border-radius: 50%;
    font-size: 0.9rem;
    color: var(--ds-text-muted);
    opacity: 0;
    pointer-events: none;
}

.compare-picker-slot:hover .compare-slot-clear,
.compare-picker-slot.active .compare-slot-clear {
    opacity: 1;
    pointer-events: auto;
}

.compare-slot-clear:hover {
    background: rgba(0, 0, 0, 0.06);
    color: var(--ds-text);
}

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

.compare-picker-option {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    width: 100%;
    padding: 8px 10px;
    border: none;
    border-radius: 8px;
    background: transparent;
    font-size: 0.78rem;
    text-align: left;
    cursor: pointer;
    color: var(--ds-text);
}

.compare-picker-option:hover {
    background: var(--ds-primary-light);
}

.compare-picker-option.is-picked {
    background: rgba(59, 130, 246, 0.08);
}

.compare-picker-badge {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    line-height: 20px;
    text-align: center;
    border-radius: 50%;
    font-size: 0.68rem;
    font-weight: 700;
    color: var(--ds-text-muted);
    border: 1px dashed var(--ds-border);
}

.compare-picker-option.is-picked .compare-picker-badge {
    color: #fff;
    background: var(--ds-primary);
    border-color: var(--ds-primary);
}

.compare-picker-option-text {
    flex: 1;
    min-width: 0;
    line-height: 1.4;
    word-break: break-word;
    white-space: normal;
}

.compare-summary {
    font-size: 0.75rem;
    color: var(--ds-text-muted);
    text-align: center;
    margin-top: 6px;
}

.msg-compare-wrap {
    margin-bottom: 20px;
}

.compare-layout-panel {
    margin-bottom: 12px;
}

.reasoning-display-panel {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--ds-border);
}

.compare-only-chat-settings {
    margin-bottom: 0;
}

.compare-context-panel {
    margin-top: 16px;
}

.compare-context-toolbar {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.compare-context-btn {
    flex: 1;
    min-height: 32px;
    padding: 6px 10px;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
    background: var(--ds-bg);
    color: var(--ds-text-muted);
    font-size: 0.78rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.compare-context-btn:hover {
    background: var(--ds-sidebar);
    color: var(--ds-text);
}

.compare-context-btn.active {
    background: rgba(77, 107, 254, 0.1);
    border-color: rgba(77, 107, 254, 0.35);
    color: #3d56c9;
    font-weight: 500;
}

.compare-layout-toolbar {
    display: flex;
    gap: 6px;
    margin-top: 8px;
}

.compare-layout-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
    background: var(--ds-bg);
    color: var(--ds-text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.compare-layout-btn:hover {
    background: var(--ds-sidebar);
    color: var(--ds-text);
}

.compare-layout-btn.active {
    background: rgba(77, 107, 254, 0.1);
    border-color: rgba(77, 107, 254, 0.35);
    color: #3d56c9;
}

.msg-compare-row {
    display: grid;
    gap: 12px;
}

.msg-compare-row.layout-row {
    grid-template-columns: 1fr 1fr;
}

.msg-compare-row.layout-row.has-left-collapsed:not(.has-right-collapsed) {
    grid-template-columns: minmax(2.5rem, max-content) minmax(0, 1fr);
}

.msg-compare-row.layout-row.has-right-collapsed:not(.has-left-collapsed) {
    grid-template-columns: minmax(0, 1fr) minmax(2.5rem, max-content);
}

.msg-compare-row.layout-row.has-left-collapsed.has-right-collapsed {
    grid-template-columns: minmax(2.5rem, max-content) minmax(2.5rem, max-content);
}

.msg-compare-row.layout-col {
    grid-template-columns: 1fr;
}

.msg-compare-col {
    min-width: 0;
    border: 1px solid var(--ds-border);
    border-radius: 12px;
    padding: 10px 12px;
    background: var(--ds-bg);
}

.msg-compare-col-header {
    margin-bottom: 10px;
}

.msg-compare-col.collapsed .msg-compare-col-header {
    margin-bottom: 0;
}

.msg-compare-col-header-group {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    max-width: 100%;
    cursor: pointer;
    user-select: none;
}

.msg-compare-col-header .msg-model-badge {
    margin-bottom: 0;
    flex: 0 0 auto;
    width: max-content;
    max-width: 100%;
}

.msg-compare-collapse-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.msg-compare-collapse-btn:hover {
    background: var(--ds-sidebar);
    color: var(--ds-text);
}

.msg-compare-collapse-chevron {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    transition: transform 0.2s ease;
}

.msg-compare-row.layout-col .msg-compare-col.collapsed .msg-compare-collapse-chevron {
    transform: rotate(-90deg);
}

.msg-compare-row.layout-row .msg-compare-collapse-chevron {
    transform: none;
}

.msg-compare-col.collapsed .msg-compare-col-body {
    display: none;
}

/* Row layout: collapse into side vertical strips */
.msg-compare-row.layout-row .msg-compare-col.collapsed-side-left,
.msg-compare-row.layout-row .msg-compare-col.collapsed-side-right {
    min-height: 10rem;
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.msg-compare-row.layout-row .msg-compare-col.collapsed-side-left .msg-compare-col-header,
.msg-compare-row.layout-row .msg-compare-col.collapsed-side-right .msg-compare-col-header {
    flex: 1;
    display: flex;
    margin-bottom: 0;
    min-height: 0;
}

.msg-compare-row.layout-row .msg-compare-col.collapsed-side-left .msg-compare-col-header-group,
.msg-compare-row.layout-row .msg-compare-col.collapsed-side-right .msg-compare-col-header-group {
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 6px;
    width: 100%;
    height: 100%;
    max-width: none;
}

.msg-compare-row.layout-row .msg-compare-col.collapsed-side-left .msg-model-badge,
.msg-compare-row.layout-row .msg-compare-col.collapsed-side-right .msg-model-badge {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    white-space: nowrap;
    padding: 10px 4px;
    line-height: 1.4;
    letter-spacing: 0.04em;
    max-width: none;
    width: auto;
    flex: 1;
    justify-content: flex-start;
    border-radius: 8px;
}

.msg-compare-row.layout-row .msg-compare-col.collapsed-side-right .msg-model-badge {
    writing-mode: vertical-lr;
}

.msg-compare-row.layout-row .msg-compare-col.collapsed .msg-compare-collapse-btn {
    flex-shrink: 0;
}

.msg-model-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 999px;
    margin-bottom: 10px;
    line-height: 1.3;
}

.msg-model-badge--deepseek {
    background: rgba(77, 107, 254, 0.12);
    color: #3d56c9;
}

.msg-model-badge--qwen {
    background: rgba(255, 106, 0, 0.12);
    color: #c45a00;
}

.msg-model-badge--glm {
    background: rgba(16, 185, 129, 0.12);
    color: #0d9668;
}

.msg-model-badge--kimi {
    background: rgba(245, 158, 11, 0.12);
    color: #b45309;
}

.msg-model-badge--default {
    background: var(--ds-sidebar);
    color: var(--ds-text-muted);
}

.msg-compare-col .msg-toolbar-assistant {
    margin-top: 8px;
}

.msg-compare-error {
    font-size: 0.8rem;
    color: var(--ds-danger);
    margin-top: 8px;
}

@media (max-width: 767px) {
    .msg-compare-row.layout-row:not(.has-left-collapsed):not(.has-right-collapsed) {
        grid-template-columns: 1fr;
    }
}

.msg-assistant.invalid-json { border-left: 3px solid var(--ds-danger); padding-left: 10px; }

.msg-body-md {
    line-height: 1.7;
    white-space: normal;
}

.msg-body-md > :first-child { margin-top: 0; }
.msg-body-md > :last-child { margin-bottom: 0; }

.msg-body-md h1, .msg-body-md h2, .msg-body-md h3 {
    line-height: 1.35;
    margin: 0.9em 0 0.45em;
    font-weight: 600;
}

.msg-body-md h1 { font-size: 1.15rem; }
.msg-body-md h2 { font-size: 1.05rem; }
.msg-body-md h3 { font-size: 0.98rem; }

.msg-body-md p { margin: 0.55em 0; }
.msg-body-md ul, .msg-body-md ol { margin: 0.45em 0; padding-left: 1.35em; }
.msg-body-md li { margin: 0.2em 0; }

.msg-body-md blockquote {
    margin: 0.6em 0;
    padding: 0.35em 0 0.35em 0.85em;
    border-left: 3px solid var(--ds-primary);
    color: var(--ds-text-muted);
    background: var(--ds-primary-light);
    border-radius: 0 6px 6px 0;
}

.msg-body-md a { color: var(--ds-primary); text-underline-offset: 2px; }

.msg-body-md :not(pre) > code {
    padding: 0.12em 0.35em;
    border-radius: 4px;
    background: var(--ds-sidebar);
    font-size: 0.88em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.msg-body-md pre {
    margin: 0.6em 0;
    padding: 12px 14px;
    border-radius: 10px;
    background: var(--ds-sidebar);
    overflow-x: auto;
    font-size: 0.84em;
    line-height: 1.5;
}

.msg-body-md pre code { padding: 0; background: none; }
.msg-body-md table { border-collapse: collapse; margin: 0.6em 0; font-size: 0.88em; width: 100%; }
.msg-body-md th, .msg-body-md td { border: 1px solid var(--ds-border); padding: 6px 8px; }
.msg-body-md th { background: var(--ds-sidebar); font-weight: 600; }

.msg-reasoning {
    margin-bottom: 10px;
}

.msg-reasoning-head {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    max-width: 100%;
    padding: 2px 0;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--ds-text-muted);
    font-size: 0.88rem;
    text-align: left;
    font-family: inherit;
}

.msg-reasoning-head:hover .msg-reasoning-title {
    color: var(--ds-text);
}

.msg-reasoning-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--ds-primary);
    line-height: 0;
}

.msg-reasoning-icon svg { display: block; }

.msg-reasoning-title {
    flex: 0 1 auto;
    font-weight: 400;
    color: #555;
    white-space: nowrap;
}

.msg-reasoning-chevron {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #999;
    line-height: 0;
    transition: transform 0.2s ease;
}

.msg-reasoning-chevron svg { display: block; }

.msg-reasoning.collapsed .msg-reasoning-chevron {
    transform: rotate(-90deg);
}

.msg-reasoning-body {
    margin: 8px 0 4px 22px;
    padding: 2px 0 2px 14px;
    border-left: 2px solid #e5e5ea;
    font-size: 0.84rem;
    line-height: 1.65;
    color: #666;
    word-break: break-word;
}

.msg-reasoning-body.msg-body-md > :first-child { margin-top: 0; }
.msg-reasoning-body.msg-body-md > :last-child { margin-bottom: 0; }

.msg-reasoning-body.msg-body-md p,
.msg-reasoning-body.msg-body-md li {
    color: #666;
}

.msg-reasoning-body.msg-body-md strong,
.msg-reasoning-body.msg-body-md b {
    color: inherit;
    font-weight: 600;
}

.msg-reasoning-body.msg-body-md ol {
    margin: 0.3em 0;
    padding-left: 1.4em;
    list-style-type: decimal;
}

.msg-reasoning-body.msg-body-md ul {
    margin: 0.25em 0 0.35em;
    padding-left: 1.35em;
    list-style-type: circle;
}

.msg-reasoning-body.msg-body-md ol > li,
.msg-reasoning-body.msg-body-md ul > li {
    margin: 0.28em 0;
    line-height: 1.65;
}

.msg-reasoning-body.msg-body-md ol > li::marker {
    color: #999;
    font-weight: 400;
}

.msg-reasoning-body.msg-body-md ul > li::marker {
    color: #bbb;
}

.msg-reasoning-body.msg-body-md li strong,
.msg-reasoning-body.msg-body-md li b {
    color: inherit;
    font-weight: 600;
}

.msg-reasoning-body.msg-body-md h1,
.msg-reasoning-body.msg-body-md h2,
.msg-reasoning-body.msg-body-md h3 {
    color: inherit;
    font-weight: 600;
    font-size: inherit;
    margin: 0.5em 0 0.3em;
}

.msg-reasoning.collapsed .msg-reasoning-body {
    display: none;
}

.msg-reasoning-active .msg-reasoning-title {
    color: #555;
}

.msg-body-hidden {
    display: none;
}

.msg.streaming .msg-body::after {
    content: '▍';
    animation: blink 1s step-end infinite;
    color: var(--ds-primary);
}

.msg-generating { color: var(--ds-text-muted); font-style: italic; }
.msg.generating .msg-body::after { content: none; }

.msg-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 6px;
    opacity: 0;
    transition: opacity 0.15s;
}

.msg:hover .msg-toolbar,
.msg:focus-within .msg-toolbar { opacity: 1; }

.msg-toolbar-actions { display: flex; gap: 2px; }

.msg-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
}

.msg-action-btn:hover:not(:disabled) { background: rgba(0, 0, 0, 0.06); color: var(--ds-text); }
.msg-action-btn:disabled { opacity: 0.35; cursor: not-allowed; }

.msg-user .msg-toolbar { justify-content: flex-end; max-width: 85%; }

.msg-toolbar-assistant {
    justify-content: flex-start;
    gap: 4px;
}

.msg-toolbar-assistant .msg-toolbar-actions {
    margin-left: 0;
}

.msg-toolbar-assistant.has-continue,
.msg-toolbar-assistant.has-version-nav {
    opacity: 1;
}

.msg-stopped-label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 2px 0 8px;
    font-size: 0.82rem;
    color: var(--ds-text-muted);
}

.msg-continue-btn {
    margin-left: auto;
    padding: 6px 14px;
    border: 1px solid var(--ds-border);
    border-radius: 999px;
    background: var(--ds-bg);
    color: var(--ds-text);
    font-size: 0.8125rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.msg-continue-btn:hover:not(:disabled) {
    background: var(--ds-sidebar);
    border-color: #ccc;
}

.msg-continue-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.msg-version-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    color: var(--ds-text-muted);
}

.msg-version-nav .version-btn {
    min-width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
}

.msg-version-nav .version-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.msg-version-nav .version-label {
    min-width: 2.5em;
    text-align: center;
    user-select: none;
}

.msg-user.msg-editing {
    align-items: flex-end;
}

.msg-edit-wrap {
    align-self: flex-end;
    width: 80%;
    margin-top: 4px;
    padding: 12px 14px 10px;
    border: 1.5px solid var(--ds-primary);
    border-radius: 20px;
    background: var(--ds-bg);
    box-sizing: border-box;
    transition: box-shadow 0.15s;
}

.msg-edit-wrap:focus-within {
    box-shadow: 0 0 0 3px rgba(77, 107, 254, 0.12);
}

.msg-edit-input {
    display: block;
    width: 100%;
    min-height: 28px;
    padding: 0;
    border: none;
    border-radius: 0;
    font-family: inherit;
    font-size: 0.92rem;
    line-height: 1.55;
    resize: none;
    margin-bottom: 10px;
    background: transparent;
    color: var(--ds-text);
    outline: none;
    box-sizing: border-box;
}

.msg-edit-input:focus {
    box-shadow: none;
}

.msg-edit-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    flex-wrap: wrap;
}

.msg-edit-btn {
    padding: 6px 18px;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-family: inherit;
    line-height: 1.2;
    cursor: pointer;
    border: none;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.msg-edit-btn--primary {
    background: var(--ds-primary);
    color: #fff;
}

.msg-edit-btn--primary:hover {
    background: var(--ds-primary-hover);
}

.msg-edit-btn--secondary {
    background: var(--ds-bg);
    color: var(--ds-text);
    border: 1px solid var(--ds-border);
}

.msg-edit-btn--secondary:hover {
    background: var(--ds-sidebar);
}

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

/* ── Composer ── */

.ds-composer {
    flex-shrink: 0;
    padding: 12px 24px 16px;
    max-width: var(--ds-chat-max-width);
    width: 100%;
    margin: 0 auto;
}

.composer-box {
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-lg);
    background: var(--ds-bg);
    box-shadow: var(--ds-shadow-lg);
    padding: 14px 16px 12px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.composer-box:focus-within {
    border-color: rgba(77, 107, 254, 0.4);
    box-shadow: 0 8px 32px rgba(77, 107, 254, 0.12);
}

.composer-box textarea,
#userInput {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.5;
    min-height: 24px;
    max-height: 200px;
    background: transparent;
    color: var(--ds-text);
}

.composer-box textarea::placeholder { color: var(--ds-text-muted); }

.composer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 10px;
    gap: 8px;
}

.composer-pills {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    min-width: 0;
    flex: 1;
}

.composer-compare-group {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    flex: 0 1 auto;
    min-width: 0;
    max-width: 100%;
}

.pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 28px;
    padding: 0 12px;
    border: 1px solid transparent;
    border-radius: var(--ds-radius-pill);
    background: transparent;
    color: var(--ds-text-muted);
    font-size: 0.78rem;
    line-height: 1;
    font-family: inherit;
    box-sizing: border-box;
    cursor: pointer;
    transition: all 0.15s;
    flex-shrink: 0;
}

.pill:hover { background: var(--ds-sidebar); }

.pill.active {
    background: var(--ds-primary-light);
    color: var(--ds-primary);
    border-color: rgba(77, 107, 254, 0.2);
}

.pill:disabled { opacity: 0.4; cursor: not-allowed; }

.composer-params-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    padding: 0;
    border: 1px solid transparent;
    border-radius: var(--ds-radius-pill);
    background: transparent;
    color: var(--ds-text-muted);
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
}

.composer-params-btn:hover {
    background: var(--ds-sidebar);
    color: var(--ds-text);
}

.composer-send {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: #d4d4d8;
    color: #fff;
    cursor: pointer;
    flex-shrink: 0;
    transition: background 0.15s, opacity 0.15s, transform 0.1s;
}

.composer-send.is-ready {
    background: var(--ds-primary);
}

.composer-send.is-ready:hover:not(:disabled) {
    background: var(--ds-primary-hover);
}

.composer-send.is-stop {
    background: var(--ds-primary);
}

.composer-send.is-stop:hover:not(:disabled) {
    background: var(--ds-primary-hover);
}

.composer-send.is-idle:not(.is-ready):disabled {
    opacity: 1;
    cursor: not-allowed;
}

.composer-send:disabled:not(.is-stop) {
    cursor: not-allowed;
}

.last-meta {
    margin-top: 8px;
    font-size: 0.72rem;
    color: var(--ds-text-muted);
    text-align: center;
}

/* ── Params drawer ── */

.ds-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: min(420px, 92vw);
    height: 100vh;
    background: var(--ds-bg);
    border-left: 1px solid var(--ds-border);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.08);
    z-index: 50;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.25s ease;
}

.ds-drawer.open { transform: translateX(0); }

.drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 16px 12px;
    border-bottom: 1px solid var(--ds-border);
    flex-shrink: 0;
}

.drawer-header h3 { font-size: 1rem; font-weight: 600; }

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.params-section + .params-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--ds-border);
}

.params-section-title {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ds-text);
    margin-bottom: 14px;
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 45;
}

.drawer-backdrop.hidden { display: none; }

/* ── Secondary tabs ── */

.secondary-header {
    flex-shrink: 0;
    padding: 20px 24px 12px;
    border-bottom: 1px solid var(--ds-border);
}

.secondary-header h2 {
    font-size: 1.15rem;
    font-weight: 600;
}

.secondary-body {
    flex: 1;
    overflow-y: auto;
    padding: 20px 24px 24px;
}

.panel {
    background: var(--ds-bg);
    border: 1px solid var(--ds-border);
    border-radius: var(--ds-radius-md);
    padding: 16px;
}

/* ── Forms & buttons ── */

.field {
    display: block;
    margin-bottom: 14px;
    font-size: 0.82rem;
}

.field span { display: block; margin-bottom: 4px; color: var(--ds-text-muted); }

.field-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
}

.field-label-row span { margin-bottom: 0; flex-shrink: 0; }

.system-tpl-select {
    flex: 1;
    min-width: 0;
    max-width: 58%;
    font-size: 0.75rem;
    padding: 3px 6px;
}

.field input[type="text"],
.field input[type="number"],
.field input[type="email"],
.field input[type="password"],
.field select,
.field textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.85rem;
    background: var(--ds-bg);
}

.field textarea { resize: vertical; }

.num-input { width: 64px !important; margin-left: 8px; }
.num-input.full { width: 100% !important; margin-left: 0; }

.field.disabled-field,
.field.disabled-field input,
.field.disabled-field select,
.field.disabled-field textarea {
    opacity: 0.45;
    pointer-events: none;
}

.field-hint {
    font-size: 0.72rem;
    color: var(--ds-text-muted);
    margin: 0 0 10px;
    line-height: 1.4;
}

.field > .field-hint {
    margin-top: 6px;
    margin-bottom: 0;
}

.param-group > .field-hint {
    margin: 4px 0 10px;
}

.param-group.disabled-group { opacity: 0.45; pointer-events: none; }

.checkbox-field {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-field span { margin: 0; }

.json-schema-block textarea {
    width: 100%;
    font-family: ui-monospace, monospace;
    font-size: 0.8rem;
}

.btn-primary, .btn-secondary, .btn-sm {
    padding: 8px 16px;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    transition: background 0.15s;
}

.btn-primary { background: var(--ds-primary); color: #fff; }
.btn-primary:hover { background: var(--ds-primary-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
    background: var(--ds-bg);
    color: var(--ds-text);
    border: 1px solid var(--ds-border);
}

.btn-secondary:hover { background: var(--ds-sidebar); }

.btn-sm, .btn-secondary-sm {
    padding: 4px 10px;
    font-size: 0.75rem;
    background: var(--ds-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.btn-secondary-sm {
    background: var(--ds-bg);
    color: var(--ds-text);
    border: 1px solid var(--ds-border);
}

.btn-danger-sm {
    padding: 4px 10px;
    font-size: 0.75rem;
    background: #fde8e8;
    color: var(--ds-danger);
    border: 1px solid #f5c2c2;
    border-radius: 6px;
    cursor: pointer;
}

.btn-danger-sm:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-danger {
    background: #fde8e8;
    color: var(--ds-danger);
    border: 1px solid #f5c2c2;
}

.templates-toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    align-items: center;
}

.templates-toolbar input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--ds-border);
    border-radius: 10px;
    font-size: 0.9rem;
}

.template-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.template-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--ds-text-muted);
    padding: 48px 20px;
    border: 1px dashed var(--ds-border);
    border-radius: var(--ds-radius-md);
}

.template-card {
    display: flex;
    flex-direction: column;
    min-height: 200px;
    padding: 16px;
    border: 1px solid var(--ds-border);
    border-radius: 14px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.template-card:hover {
    border-color: rgba(77, 107, 254, 0.35);
    box-shadow: 0 4px 16px rgba(77, 107, 254, 0.08);
}

.template-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.template-card-title-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px 8px;
    min-width: 0;
    flex: 1;
}

.template-card-head h4 { font-size: 1rem; font-weight: 600; flex-shrink: 0; }

.template-card-badge {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--ds-primary);
    background: var(--ds-primary-light);
    border-radius: var(--ds-radius-pill);
    padding: 2px 8px;
}

.template-card-tags { display: flex; flex-wrap: wrap; gap: 6px; }

.template-tag {
    font-size: 0.72rem;
    color: var(--ds-primary);
    background: var(--ds-primary-light);
    border-radius: var(--ds-radius-pill);
    padding: 3px 10px;
}

.template-card-preview {
    flex: 1;
    font-size: 0.78rem;
    background: var(--ds-sidebar);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 12px;
    font-family: ui-monospace, monospace;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
}

.template-card-footer { margin-top: auto; display: flex; flex-direction: column; gap: 8px; }
.template-card-apply { width: 100%; }
.template-card-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }

.template-card-actions .btn-compact {
    width: 100%;
    padding: 5px 6px;
    font-size: 0.74rem;
    text-align: center;
    border: 1px solid var(--ds-border);
    border-radius: 6px;
    background: var(--ds-bg);
    cursor: pointer;
}

.editor-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 12px;
}

.usage-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.stat-box { text-align: center; padding: 12px; }
.stat-box .val { font-size: 1.4rem; font-weight: 700; color: var(--ds-primary); }
.stat-box .lbl { font-size: 0.75rem; color: var(--ds-text-muted); }

.call-log-list { max-height: 400px; overflow-y: auto; }

.log-item {
    padding: 10px;
    border-bottom: 1px solid var(--ds-border);
    font-size: 0.85rem;
}

.log-item .log-meta { color: var(--ds-text-muted); font-size: 0.75rem; margin-top: 4px; }

.sync-card { max-width: 480px; }
.sync-desc { color: var(--ds-text-muted); margin: 10px 0 16px; font-size: 0.9rem; }

.auth-form input {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
}

.auth-btns { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.sync-last { margin-top: 12px; font-size: 0.85rem; color: var(--ds-text-muted); }
.sync-status { margin-top: 10px; font-size: 0.85rem; }
.sync-status.error { color: var(--ds-danger); }
.sync-status.success { color: var(--ds-success); }

.move-folder-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin: 12px 0;
    max-height: 240px;
    overflow-y: auto;
}

.move-folder-option {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    padding: 10px 12px;
    border: 1px solid var(--ds-border);
    border-radius: 8px;
    background: var(--ds-bg);
    cursor: pointer;
    font-size: 0.9rem;
    transition: border-color 0.12s, background 0.12s;
}

.move-folder-option input {
    flex-shrink: 0;
    margin: 0;
    accent-color: var(--ds-primary);
}

.move-folder-option span {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.move-folder-option:hover,
.move-folder-option.selected {
    border-color: var(--ds-primary);
    background: var(--ds-primary-light);
}

.session-row--dragging {
    opacity: 0.45;
}

.folder-row.drop-target,
.folder-children.drop-target,
.session-list--drop-root {
    background: var(--ds-primary-light);
    outline: 1px dashed var(--ds-primary);
    outline-offset: -1px;
}

.folder-children.drop-target {
    border-radius: 0 0 8px 8px;
}

.move-folder-empty { font-size: 0.85rem; color: var(--ds-text-muted); }

/* ── Overlays ── */

.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 20px;
    background: #333;
    color: #fff;
    border-radius: 10px;
    font-size: 0.9rem;
    z-index: 100;
    max-width: 90%;
}

.var-dialog {
    border: none;
    border-radius: var(--ds-radius-md);
    padding: 20px;
    max-width: 420px;
    width: 90%;
    margin: auto;
    position: fixed;
    inset: 0;
    box-shadow: var(--ds-shadow-lg);
}

.var-dialog::backdrop { background: rgba(0, 0, 0, 0.35); }

.confirm-dialog-message {
    margin: 12px 0 4px;
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--ds-text-muted);
}

.confirm-dialog .editor-actions {
    margin-top: 20px;
}

.btn-danger-confirm {
    background: var(--ds-danger);
    border-color: var(--ds-danger);
    color: #fff;
}

.btn-danger-confirm:hover {
    background: #c62828;
    border-color: #c62828;
}

/* ── Responsive ── */

@media (max-width: 768px) {
    .ds-collapsed-bar { display: none !important; }

    .ds-app.sidebar-collapsed .chat-main-area,
    .ds-app.sidebar-collapsed .secondary-header {
        padding-top: 0;
    }

    .ds-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        transform: translateX(0);
        box-shadow: var(--ds-shadow-lg);
    }

    .ds-sidebar.mobile-hidden {
        transform: translateX(-100%);
        width: var(--ds-sidebar-width);
    }

    .ds-sidebar.collapsed {
        width: var(--ds-sidebar-width);
    }

    .ds-mobile-menu { display: flex !important; }

    .message-list { padding: 48px 16px 12px; }

    .ds-composer { padding: 8px 12px 12px; }

    .composer-box { border-radius: 18px; }

    .ds-drawer { width: 100vw; }

    .secondary-body { padding: 16px; }

    .template-list { grid-template-columns: 1fr; }
}

@media (min-width: 769px) {
    .ds-mobile-menu { display: none !important; }
}