html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

:root {
    --app-height: 100dvh;
    --keyboard-offset: 0px;
    --color-white: #fff;
    --color-main: #fff;
    --color-main-fade: #ffffff00;
    --color-secondary: #f9f9f9;
    --color-secondary-fade: #f9f9f900;
    --color-button-hover: #ececec;
    --color-button-hover-fade: #ececec00;
    --color-user-icon: #ececec;
    --color-groupings: #8e8ea0;
    --color-gpt-icon: #10a37f;
    --color-black: #000;
    --color-user-menu-hover: #ececec;
    --color-text: #0d0d0d;
    --color-gpt3: #10a37f;
    --color-gpt4: #ab68ff;
    --color-secondary-p: #666;
    --color-logo: #0d0d0d;
    --color-model-name: #0d0d0d;
    --color-assistant-bg: transparent;
    --color-assistant-text: #0d0d0d;
    --color-disclaimer: #8e8ea0;
    --color-border1: #e5e5e5;
    --color-user-menu-border: #e5e5e5;
    --color-user-menu-selected-border: #d9d9d9;
    --color-border2: transparent;
    --color-user-message-border: #e5e5e5;
    --link-color: #10a37f;
    --mode-selector-color: #f9f9f9;
    --color-input-bg: #fff;
    --color-user-bubble: #f4f4f4;
}

body {
    background: var(--color-main);
    display: flex;
    font-size: 1em;
    font-family: system-ui, sans-serif;
    min-height: var(--app-height);
    overflow: hidden;
}

a:link, a:visited {
    color: var(--link-color);
}

img {
    max-width: 100%;
    max-height: 55vh;
}

#sidebar {
    position: relative;
    left: 0;
    background: var(--color-secondary);
    width: 260px;
    padding: 12px 8px;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    flex-direction: column;
    transition: all 0.2s ease-in-out;
    height: 100%;
    border-right: 1px solid var(--color-border1);
    z-index: 500;
}

.float-top {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-bottom: 8px;
}

.float-top::-webkit-scrollbar {
    width: 6px;
}

.float-top::-webkit-scrollbar-track {
    background: transparent;
}

.float-top::-webkit-scrollbar-thumb {
    background: rgba(0,0,0,0.1);
    border-radius: 4px;
}

[data-theme="dark"] .float-top::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.1);
}

/* ── Search chats modal ─────────────────────────────────────────────────── */
.voidai-modal {
    position: fixed;
    inset: 0;
    display: none;
    z-index: 2000;
}
.voidai-modal.open {
    display: block;
}
.voidai-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}
.voidai-modal-panel {
    position: relative;
    width: min(720px, calc(100vw - 24px));
    margin: 90px auto;
    background: #fff;
    border: 1px solid var(--color-border1);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
[data-theme="dark"] .voidai-modal-panel {
    background: #141414;
    border-color: #2a2a2a;
}
.voidai-modal-header {
    padding: 12px 12px 8px;
    border-bottom: 1px solid var(--color-border1);
}
[data-theme="dark"] .voidai-modal-header {
    border-bottom-color: #2a2a2a;
}
[data-theme="dark"] .voidai-modal-header {
    border-bottom-color: #2a2a2a;
}
.voidai-modal-search {
    position: relative;
}
#search-chats-input {
    width: 100%;
    border: 1px solid var(--color-border1);
    border-radius: 12px;
    padding: 12px 42px 12px 14px;
    outline: none;
    font-size: 14px;
    background: #fff;
    color: var(--color-text);
}
[data-theme="dark"] #search-chats-input {
    border-color: #2a2a2a;
    background: #0b0b0b;
    color: #e6edf3;
}
.voidai-modal-close {
    border: 0;
    background: transparent;
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 999px;
    font-size: 18px;
    line-height: 30px;
    cursor: pointer;
    color: var(--color-text);
    padding: 0;
}
[data-theme="dark"] .voidai-modal-close {
    color: #e6edf3;
}
.voidai-modal-results {
    max-height: min(520px, calc(100vh - 240px));
    overflow: auto;
    padding: 6px 6px 10px;
}
.voidai-search-section {
    padding: 6px 10px 4px;
    font-size: 11px;
    color: var(--color-groupings);
}
.voidai-search-item {
    width: 100%;
    text-align: left;
    border: 0;
    background: #fff;
    padding: 10px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    border-radius: 10px;
}
.voidai-search-item:hover,
.voidai-search-item.active {
    background: var(--color-button-hover);
}
[data-theme="dark"] .voidai-search-item:hover,
[data-theme="dark"] .voidai-search-item.active {
    background: rgba(255,255,255,0.06);
}
.voidai-search-title {
    font-size: 14px;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
[data-theme="dark"] .voidai-search-title {
    color: #e6edf3;
}
.voidai-search-title strong,
.voidai-search-snippet strong {
    font-weight: 700;
}
.voidai-search-snippet {
    margin-top: 2px;
    font-size: 12px;
    color: var(--color-groupings);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
[data-theme="dark"] .voidai-search-title {
    color: #e6edf3;
}
.voidai-search-sub {
    margin-left: auto;
    font-size: 12px;
    color: var(--color-groupings);
}
.voidai-search-icon {
    width: 18px;
    height: 18px;
    border-radius: 999px;
    border: 2px solid rgba(0,0,0,0.35);
    box-sizing: border-box;
    flex: 0 0 auto;
}
[data-theme="dark"] .voidai-search-icon {
    border-color: rgba(255,255,255,0.35);
}
.voidai-search-new {
    margin: 2px 0 8px;
}

#sidebar.hidden {
    left: 0;
    margin-right: 0;
    width: 60px;
    padding: 12px 6px;
}

#sidebar.hidden .hide-sidebar {
    left: 0;
    transform: none;
    padding: 10px;
    justify-content: center;
}

#sidebar.hidden .btn-text,
#sidebar.hidden .section-label,
#sidebar.hidden .user-info,
#sidebar.hidden .user-dropdown-header i {
    display: none;
}

#sidebar.hidden .user-menu-btn {
    padding: 10px;
    justify-content: center;
}

#sidebar.hidden .sidebar-actions button,
#sidebar.hidden .static-list li button,
#sidebar.hidden .conversations li > button {
    padding: 10px;
    justify-content: center;
}

#sidebar.hidden button[data-tooltip] {
    position: relative;
}

#sidebar.hidden button[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    margin-left: 10px;
    background: #000;
    color: #fff;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 13px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    z-index: 1000;
    transition: opacity 0.2s;
}

[data-theme="dark"] #sidebar.hidden button[data-tooltip]::after {
    background: #fff;
    color: #000;
}

#sidebar.hidden button[data-tooltip]:hover::after {
    opacity: 1;
}

#sidebar.hidden .expanded-logo {
    display: none;
}

#sidebar.hidden .hide-sidebar {
    width: 100%;
}

#sidebar.hidden .hide-sidebar .panel-icon {
    display: none;
}

#sidebar.hidden .hide-sidebar .collapsed-logo {
    display: block;
}

#sidebar.hidden .hide-sidebar:hover .collapsed-logo {
    display: none;
}

#sidebar.hidden .hide-sidebar:hover .panel-icon {
    display: block;
}

#sidebar.hidden .collapsed-chat-icon {
    display: block !important;
    font-size: 16px;
    width: 20px;
    text-align: center;
}

button,
.button {
    display: block;
    background: inherit;
    border: 1px solid var(--color-border1);
    border-radius: 5px;
    color: var(--color-text);
    padding: 13px;
    box-sizing: border-box;
    text-align: left;
    cursor: pointer;
}

button:hover,
.button:hover {
    background: var(--color-button-hover);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding: 0 4px;
}

.sidebar-logo {
    font-size: 24px;
    color: var(--color-text);
    padding-left: 8px;
    display: flex;
    align-items: center;
}

.hide-sidebar {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--color-text-dim);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: background 0.2s;
}

.hide-sidebar:hover {
    background: var(--color-button-hover);
}

.hide-sidebar .panel-icon {
    display: block;
    font-size: 18px;
}

.hide-sidebar .collapsed-logo {
    display: none;
}

.sidebar-actions button {
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 10px 12px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text);
    font-size: 14px;
    font-weight: 400;
}

.sidebar-actions button:hover {
    background: var(--color-button-hover);
}

.sidebar-actions button i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.sidebar-section {
    margin-top: 24px;
}

.section-label {
    font-size: 12px;
    font-weight: 400;
    color: var(--color-text-dim);
    padding: 0 12px;
    margin-bottom: 8px;
}

.static-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.static-list li button {
    width: 100%;
    border: none;
    background: transparent;
    text-align: left;
    padding: 10px 12px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-text);
    font-size: 14px;
}

.static-list li button:hover {
    background: var(--color-button-hover);
}

.static-list li button i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.conversations {
    width: 100%;
    list-style: none;
    padding: 0;
    margin: 0;
}

.conversations li {
    position: relative;
}

.conversations li > button {
    width: 100%;
    border: none;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    padding: 10px 12px;
    border-radius: 8px;
    background: transparent;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-text);
}

.conversations li:hover > button {
    background: var(--color-button-hover);
}

.conversations li.active > button {
    background: #e5e5e5;
    font-weight: 400;
}

[data-theme="dark"] .conversations li.active > button {
    background: #2a2a2a;
}

.edit-buttons {
    display: none;
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    gap: 4px;
}

.conversations li:hover .edit-buttons {
    display: flex;
}

.edit-buttons button {
    background: transparent;
    border: none;
    padding: 4px;
    color: var(--color-groupings);
    cursor: pointer;
    border-radius: 4px;
}

.edit-buttons button:hover {
    color: var(--color-text);
    background: rgba(0,0,0,0.05);
}

.fade {
    position: absolute;
    right: 0;
    top: 0;
    background: var(--color-user-icon);
    width: 40px;
    height: 100%;
    border-radius: 5px;
    background: transparent;
    background: linear-gradient(90deg, var(--color-secondary-fade) 0%, var(--color-secondary) 50%);
}

.conversations li.active .fade {
    background: linear-gradient(90deg, var(--color-main-fade) 0%, var(--color-main) 50%);
}

.conversations li:hover .fade {
    width: 80px;
    background: linear-gradient(90deg, var(--color-button-hover-fade) 0%, var(--color-button-hover) 30%);
}

.edit-buttons button {
    border: none;
    padding: 0;
    margin: 13px 1px 13px 1px;
    opacity: 0.7;
}

.edit-buttons button:hover {
    background: none;
    opacity: 1;
}

.conversations li.grouping {
    color: var(--color-groupings);
    font-size: 0.7em;
    font-weight: bold;
    padding-left: 13px;
    margin-top: 12px;
    margin-bottom: 12px;
}

i.user-icon {
    color: #fff;
    background: var(--color-user-icon);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-right: 6px;
    font-style: normal;
    width: 24px;
    height: 24px;
    font-size: 12px;
    text-transform: uppercase;
    font-family: system-ui, sans-serif;
}

.gpt.user-icon  {
    background: var(--color-gpt-icon);
}

.user-menu {
    position: relative;
    border-top: 1px solid var(--color-border1);
    padding: 8px 12px;
}

.user-menu-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    width: 100%;
    background: transparent;
    border: none;
    cursor: pointer;
    border-radius: 8px;
    text-align: left;
}

.user-menu-btn:hover {
    background: rgba(0,0,0,0.05);
}

[data-theme="dark"] .user-menu-btn:hover {
    background: rgba(255,255,255,0.05);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #3b82f6;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    flex-shrink: 0;
}

.user-info {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow: hidden;
}

.user-name {
    font-weight: 500;
    font-size: 14px;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-plan {
    font-size: 12px;
    color: var(--color-text-dim);
}

.user-dropdown {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    left: 8px;
    width: calc(100% - 16px);
    background: #fff;
    border: 1px solid var(--color-border1);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    z-index: 100;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.2s, transform 0.2s;
}

[data-theme="dark"] .user-dropdown {
    background: var(--color-bg);
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.user-dropdown.show-animate {
    display: block;
}

.user-dropdown.show {
    opacity: 1;
    transform: translateY(0);
}

.user-dropdown-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--color-border1);
}

.user-dropdown-header .user-avatar {
    width: 40px;
    height: 40px;
    font-size: 16px;
}

.user-dropdown-header i.fa-chevron-right {
    font-size: 12px;
    color: var(--color-text-dim);
    margin-left: auto;
}

.user-dropdown ul {
    list-style: none;
    padding: 8px 0;
    margin: 0;
}

.user-dropdown li button {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 16px;
    background: transparent;
    border: none;
    text-align: left;
    color: var(--color-text);
    font-size: 14px;
    cursor: pointer;
}

.user-dropdown li button:hover {
    background: rgba(0,0,0,0.05);
}

[data-theme="dark"] .user-dropdown li button:hover {
    background: rgba(255,255,255,0.05);
}

.user-dropdown li button i {
    width: 20px;
    text-align: center;
    font-size: 16px;
    color: var(--color-text-dim);
}

.user-dropdown li.has-chevron button {
    padding-right: 16px;
}

.user-dropdown li.has-chevron button .chevron {
    margin-left: auto;
    font-size: 12px;
}

.user-dropdown li:last-child {
    border-top: 1px solid var(--color-border1);
    margin-top: 4px;
    padding-top: 4px;
}

::-webkit-scrollbar {
    width: 9px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: transparent;
}

:hover::-webkit-scrollbar-thumb {
    background-color: var(--color-text);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-text);
    border-radius: 5px;
}

main {
    width: 100%;
    height: var(--app-height);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-content: center;
    justify-content: flex-start;
    padding: 0 0 30px 0;
    box-sizing: border-box;
    position: relative;
}

main .view {
    display: none;
    flex-direction: column;
}

main .view.show {
    display: flex;
}

.top-menu {
    position: relative;
    display: flex;
    margin: 24px auto;
    z-index: 2;
}

.model-selector {
    position: relative;
    border-radius: 11px;
    background: var(--color-secondary);
    display: flex;
    padding: 4px;
    gap: 4px;
}

.model-selector .model-button {
    font-size: 0.8em;
    border-radius: 9px;
    text-align: center;
    width: 150px;
    border: none;
    font-weight: bold;
    opacity: 0.5;
    cursor: pointer;
}

.model-selector .model-button:hover {
    background: none;
    opacity: 1;
}

.model-selector .model-button.selected {
    border: 1px solid var(--color-user-menu-selected-border);
    background: var(--color-user-menu-hover);
    opacity: 1;
}

.model-selector button .fa {
    margin-right: 5px;
}

.gpt-3 .fa {
    color: var(--color-gpt3);
}

.gpt-4 .fa {
    color: var(--color-gpt4);
}

.model-info {
    display: none;
    position: absolute;
    bottom: 5px;
    left: 0;
    transform: translateY(100%);
    padding: 15px;
    cursor: default;
}

.model-info-box {
    padding: 20px 20px 10px 20px;
    border-radius: 15px;
    background: var(--color-secondary);
    color: var(--color-text);
    text-align: left;
}

.model-selector > .button:hover .model-info {
    display: block;
}

.model-selector p {
    font-size: 1.1em;
    margin: 0 0 15px 0;
}

p.secondary {
    font-size: 1em;
    color: var(--color-secondary-p);
}

.mode-selector {
    border-radius: 11px;
    background: var(--mode-selector-color);
    margin-left: 6px;
    border: none;
    width: 48px;
    padding: 15px;
    position: relative;
    text-align: center;
    z-index: 1300; /* above fixed message-form on mobile */
}

.mode-selector:hover {
    background: var(--color-secondary);
}

.mode-selector:hover .mode-selector-wrap {
    display: block;
}

.mode-selector ul,
.mode-selector li {
    list-style: none;
    list-style-type: none;
    margin: 0;
    padding: 0;
}

.mode-selector-wrap {
    display: none;
    position: absolute;
    bottom: 0px;
    right: 0;
    transform: translateY( 100% );
    z-index: 1301;
}

.mode-selector ul {
    width: 150px;
    background: var(--color-secondary);
    border-radius: 5px;
    margin-top: 6px;
    overflow: hidden;
}

.mode-selector button {
    width: 100%;
    border: none;
    border-radius: 0;
}

.mode-selector button i.fa {
    width: 22px;
}

.logo {
    position: relative;
    z-index: 1;
    color: var(--color-logo);
    font-weight: bold;
    text-align: center;
    font-size: 2.3em;
}

.view.conversation-view {
    overflow-y: auto;
    padding-top: 20px;
    flex: 1;
}

/* New-chat view must fill remaining vertical space so logo centers correctly */
.view.new-chat-view {
    flex: 1;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
}

.top-bar {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: 56px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border1);
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-btn {
    background: transparent;
    border: 1px solid var(--color-border1);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text);
}

.header-btn:hover {
    background: var(--color-button-hover);
}

.more-btn {
    padding: 6px 10px;
}

.show-sidebar {
    display: none;
    padding: 8px;
    margin-right: 12px;
}

#sidebar.hidden ~ main .show-sidebar {
    display: flex;
}

#sidebar.hidden ~ main .top-bar {
    left: 0;
}

.model-name {
    transition: all 0.2s ease-in-out;
}

.current-model-btn {
    background: transparent;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-radius: 8px;
}

.current-model-btn i {
    font-size: 0.7em;
    color: var(--color-groupings);
}

.model-dropdown-menu {
    display: none;
    position: absolute;
    top: 48px;
    left: 0px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    border: 1px solid var(--color-border1);
    min-width: 280px;
    z-index: 1001;
    padding: 8px;
}

.model-dropdown-menu.show {
    display: block;
}

.model-dropdown-header {
    font-size: 0.8rem;
    color: var(--color-groupings);
    padding: 8px 12px;
}

.model-option {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    text-align: left;
    color: var(--color-text);
    font-size: 1rem;
}

.model-option:hover {
    background: var(--color-user-menu-hover);
}

.model-option .check-icon {
    display: none;
    color: var(--color-text);
}

.model-option.selected .check-icon {
    display: block;
}

.message {
    padding: 15px 20px 15px 20px;
    border-bottom: none;
    font-size: 1rem;
    position: relative;
    display: flex;
    justify-content: center;
}

.message-inner {
    display: flex;
    flex-direction: column;
    gap: 20px;
    width: 100%;
    max-width: 800px;
    min-width: 0;
}

.message.user .message-inner {
    flex-direction: row;
    justify-content: flex-end;
}

.message.user .identity {
    display: none;
}

.message.user .content {
    background-color: var(--color-user-bubble);
    border-radius: 1.5rem;
    padding: 12px 20px;
    max-width: 70%;
    width: auto;
    color: var(--color-text);
}

.message.user.has-attachments .content {
    width: min(70%, 380px);
    padding: 8px;
}

.message-attachments {
    display: grid;
    gap: 8px;
    margin-top: 10px;
}

.message-attachments:first-child {
    margin-top: 0;
}

.message-attachment {
    display: block;
    width: 100%;
    overflow: hidden;
    border-radius: 12px;
    border: 1px solid var(--color-border1);
    background: var(--color-secondary);
}

.message.user .message-attachment {
    margin-left: auto;
}

.message-attachment img {
    display: block;
    width: 100%;
    max-height: 360px;
    object-fit: contain;
}

.message.assistant .identity {
    display: none;
}

.message.assistant .content {
    background-color: transparent;
    padding-top: 5px;
    width: 100%;
    min-width: 0;
    line-height: 1.75;
    color: var(--color-text);
    overflow-wrap: anywhere;
    font-size: 1rem;
}

/* ── Prose typography inside assistant messages ── */
.message.assistant .content > p,
.message.assistant .content > ul,
.message.assistant .content > ol,
.message.assistant .content > blockquote,
.message.assistant .content > table,
.message.assistant .content > hr {
    margin-top: 0;
    margin-bottom: 1.1em;
}

.message.assistant .content > p:last-child,
.message.assistant .content > ul:last-child,
.message.assistant .content > ol:last-child {
    margin-bottom: 0;
}

.message.assistant .content h1,
.message.assistant .content h2,
.message.assistant .content h3,
.message.assistant .content h4,
.message.assistant .content h5,
.message.assistant .content h6 {
    margin: 1.4em 0 0.5em 0;
    line-height: 1.3;
    font-weight: 700;
    color: var(--color-text);
}

.message.assistant .content h1:first-child,
.message.assistant .content h2:first-child,
.message.assistant .content h3:first-child {
    margin-top: 0.2em;
}

.message.assistant .content h1 { font-size: 1.55rem; }
.message.assistant .content h2 { font-size: 1.25rem; }
.message.assistant .content h3 { font-size: 1.1rem; }
.message.assistant .content h4 { font-size: 1rem; }

.message.assistant .content ul,
.message.assistant .content ol {
    padding-left: 1.6em;
}

.message.assistant .content li {
    margin-bottom: 0.35em;
    line-height: 1.7;
}

.message.assistant .content li:last-child {
    margin-bottom: 0;
}

.message.assistant .content li > p {
    margin-bottom: 0.4em;
}

.message.assistant .content strong {
    font-weight: 700;
    color: var(--color-text);
}

.message.assistant .content em {
    font-style: italic;
}

.message.assistant .content code:not(pre code) {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.875em;
    background: rgba(0,0,0,0.06);
    border: 1px solid rgba(0,0,0,0.08);
    border-radius: 5px;
    padding: 0.12em 0.38em;
    color: inherit;
}

.message.assistant .content blockquote {
    margin: 1em 0;
    padding: 0.6em 1em;
    border-left: 3px solid var(--color-border1);
    color: var(--color-secondary-p);
    font-style: italic;
}

.message.assistant .content hr {
    border: none;
    border-top: 1px solid var(--color-border1);
    margin: 1.5em 0;
}

.message.assistant .thinking {
    margin: 0 0 10px 0;
    padding: 8px 12px;
    border-left: 3px solid var(--color-border1);
    color: var(--color-groupings);
    font-size: 0.84rem;
    line-height: 1.4;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.message.assistant.has-response .thinking {
    display: none;
}

.message.assistant .thinking summary {
    cursor: pointer;
    color: var(--color-text);
    font-weight: 600;
    font-size: 0.82rem;
}

.message.assistant .thinking-content {
    margin-top: 6px;
    max-height: 120px;
    overflow-y: auto;
    padding-right: 8px;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

#message-form {
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
    max-width: 800px;
    text-align: center;
    padding: 10px 20px 20px 20px;
    background: transparent;
}

.message-wrapper {
    position: relative;
}

#message::placeholder {
    color: var(--color-groupings);
}

#message {
    background: var(--color-input-bg);
    border-radius: 1.5rem;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #e5e5e5;
    resize: none;
    padding: 15px 50px 15px 52px; /* left-pad for upload button */
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    box-shadow: 0 0 15px rgba(0,0,0,0.05);
    outline: none;
}

.disclaimer {
    margin-top: 10px;
    color: var(--color-disclaimer);
    font-size: 0.75rem;
}

#send-button {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    font-size: 0.9em;
    color: #fff;
    border: none;
    cursor: pointer;
}

button#send-button:hover {
    background: #333;
}

#send-button.is-stopping {
    background: #d11f3f;
}

#send-button.is-stopping:hover {
    background: #b91c37;
}

#upload-button {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--color-groupings);
    cursor: pointer;
    padding: 0;
    transition: color 0.15s;
}

#upload-button:hover {
    color: var(--color-text);
    background: var(--color-button-hover);
}

p {
    margin: 0 0 1.5em 0;
}

.message-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 28px;
    margin-top: -10px;
}

.message-actions button.copy {
    border-radius: 6px;
    background: transparent;
    color: var(--color-text);
    padding: 0;
    width: 28px;
    height: 28px;
    border: 0;
    position: static;
    flex: 0 0 28px;
    text-align: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease;
}

.message.assistant .message-actions {
    align-self: flex-start;
}

.message.user .message-inner {
    align-items: center;
    gap: 8px;
}

.message.user .message-actions {
    order: 3;
}

.message:hover .message-actions button.copy,
.message:focus-within .message-actions button.copy {
    opacity: 0.5;
    pointer-events: auto;
}

.message-actions button.copy:hover {
    opacity: 1;
    background: var(--color-button-hover);
}

.sources-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: none;
    background: transparent;
    color: var(--color-text);
    padding: 2px 6px;
    min-height: 28px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
}

.sources-button:hover {
    background: var(--color-button-hover);
}

.sources-avatars {
    display: inline-flex;
    align-items: center;
    padding-left: 2px;
}

.source-favicon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--color-main);
    background: var(--color-main);
    color: var(--color-text);
    font-size: 0.68rem;
    font-weight: 700;
    line-height: 1;
    margin-left: -5px;
    overflow: hidden;
    box-sizing: border-box;
}

.source-favicon img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.source-favicon.fallback {
    background: var(--color-secondary);
}

.source-favicon:first-child {
    margin-left: 0;
}

#sources-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1390;
    background: rgba(0, 0, 0, 0.18);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.18s ease;
}

#sources-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: min(420px, 100vw);
    height: 100dvh;
    z-index: 1400;
    background: var(--color-main);
    border-left: 1px solid var(--color-border1);
    box-shadow: -18px 0 40px rgba(0, 0, 0, 0.12);
    transform: translateX(100%);
    transition: transform 0.22s ease;
    display: flex;
    flex-direction: column;
}

body.sources-panel-open #sources-backdrop {
    opacity: 1;
    pointer-events: auto;
}

body.sources-panel-open #sources-panel {
    transform: translateX(0);
}

.sources-panel-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    padding: 22px 22px 18px;
    border-bottom: 1px solid var(--color-border1);
}

.sources-panel-header h2 {
    margin: 0;
    font-size: 1.35rem;
    line-height: 1.2;
}

.sources-panel-subtitle {
    margin: 5px 0 0;
    color: var(--color-secondary-p);
    font-size: 0.9rem;
}

.sources-panel-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 8px;
    width: 34px;
    height: 34px;
    padding: 0;
    background: transparent;
    color: var(--color-text);
    font-size: 1.05rem;
}

.sources-panel-list {
    overflow-y: auto;
    padding: 16px;
}

.source-card {
    display: block;
    padding: 14px;
    border-radius: 8px;
    color: var(--color-text);
    text-decoration: none;
}

.source-card + .source-card {
    margin-top: 8px;
}

.source-card:hover {
    background: var(--color-secondary);
}

.source-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-secondary-p);
    font-size: 0.86rem;
    margin-bottom: 8px;
}

.source-card-meta .source-favicon {
    border-color: var(--color-main);
    margin-left: 0;
}

.source-card h3 {
    margin: 0 0 7px;
    font-size: 1rem;
    line-height: 1.35;
}

.source-card p {
    margin: 0;
    color: var(--color-secondary-p);
    font-size: 0.92rem;
    line-height: 1.45;
}

.source-card-url {
    display: block;
    margin-top: 10px;
    color: var(--link-color);
    font-size: 0.82rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.code-block-wrapper {
    background-color: #f9f9f9;
    border: 1px solid var(--color-border1);
    border-radius: 12px;
    margin: 1.1em 0;
    overflow: hidden;
}

.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background-color: transparent;
    color: var(--color-text);
    font-size: 0.85em;
    font-weight: 500;
    border-bottom: 1px solid var(--color-border1);
}

.code-language i {
    margin-right: 5px;
    opacity: 0.7;
}

.code-block-header button.copy {
    background: transparent;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    opacity: 0.5;
    font-size: 1.1em;
}

.code-block-header button.copy:hover {
    opacity: 1;
}

/* Code block toolbar action buttons (copy, edit, toggle) */
.cb-toolbar {
    display: flex;
    align-items: center;
    gap: 6px;
}

.cb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--color-groupings);
    font-size: 0.95em;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    padding: 0;
}

.cb-btn:hover {
    background: var(--color-button-hover);
    color: var(--color-text);
}

.cb-btn.active {
    background: var(--color-secondary);
    color: var(--color-text);
}

/* Pill grouping for view toggle */
.cb-group {
    display: flex;
    align-items: center;
    background: transparent;
    border: 1px solid var(--color-border1);
    border-radius: 8px;
    padding: 2px;
}

.cb-group .cb-btn {
    width: 28px;
    height: 26px;
    border-radius: 5px;
    font-size: 0.85em;
}

.cb-group .cb-btn:hover {
    background: var(--color-button-hover);
}

.cb-group .cb-btn.active {
    background: var(--color-secondary);
    color: var(--color-text);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

/* Collapsed code block body */
.code-block-body.collapsed {
    display: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th {
    background-color: #ddd;
    font-weight: bold;
    color: #474747;
}

td, th {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: left;
}

pre {
    width: 100%;
}

.code-block-body {
    overflow-x: auto;
}

.code-block-body pre {
    margin: 0;
    padding: 0;
    background: transparent !important;
    overflow-x: auto;
}

.code-block-body pre code.hljs {
    white-space: pre;
    border-radius: 0;
    font-size: 0.88em;
    line-height: 1.55;
    margin: 0;
    padding: 14px;
    position: static;
    background: transparent !important;
    display: block;
}

/* Legacy rules kept for backward compatibility */
.code-block-wrapper pre {
    margin: 0;
    padding: 0;
    background: transparent !important;
    overflow-x: auto;
}

.code-block-wrapper pre code.hljs {
    white-space: pre;
    border-radius: 0;
    font-size: 0.88em;
    margin: 0;
    padding: 14px;
    position: static;
    background: transparent !important;
    display: block;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 0;
    height: 20px;
}

.typing-indicator span {
    display: block;
    width: 6px;
    height: 6px;
    background-color: var(--color-text);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
    opacity: 0.5;
}

.typing-indicator span:nth-child(1) {
    animation-delay: -0.32s;
}

.typing-indicator span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

.drag-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .drag-overlay {
    background: rgba(20, 20, 20, 0.95);
}

.drag-overlay.active {
    display: flex;
}

.drag-overlay-content {
    text-align: center;
    padding: 60px;
    border: 3px dashed var(--color-border);
    border-radius: 20px;
    background: transparent;
    pointer-events: none;
}

.drag-icons {
    position: relative;
    height: 80px;
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.drag-icons i {
    font-size: 40px;
    position: absolute;
    color: #3b82f6;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    padding: 10px;
}

[data-theme="dark"] .drag-icons i {
    background: #2a2a2a;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.drag-icons .icon-code {
    transform: translateX(-30px) rotate(-15deg);
    z-index: 1;
}

.drag-icons .icon-doc {
    transform: translateX(30px) rotate(15deg);
    z-index: 2;
}

.drag-icons .icon-image {
    font-size: 50px;
    transform: translateY(15px);
    z-index: 3;
    color: #2563eb;
}

.drag-overlay-content h2 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    color: var(--color-text);
    font-weight: 600;
}

.drag-overlay-content p {
    font-size: 1.1rem;
    color: var(--color-text-dim);
}

@media (max-width: 700px) {
    body {
        overflow: auto;
    }

    main {
        z-index: 1;
        height: var(--app-height);
        min-height: var(--app-height);
        padding-bottom: 96px;
        overflow: hidden;
    }

    .top-bar {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        gap: 8px;
        height: 54px;
        padding: 0 10px;
    }

    .header-left {
        min-width: 0;
        gap: 8px;
    }

    .header-right {
        gap: 8px;
    }

    .show-sidebar {
        width: 42px;
        height: 42px;
        min-width: 42px;
        margin-right: 0;
        padding: 0;
        align-items: center;
        justify-content: center;
    }

    .current-model-btn {
        min-width: 0;
        max-width: 52vw;
        padding: 6px 4px;
        font-size: 1rem;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .current-model-btn .current-model {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .header-btn {
        height: 38px;
        padding: 6px 10px;
        white-space: nowrap;
    }

    .more-btn {
        width: 38px;
        padding: 0;
        justify-content: center;
    }

    #sidebar {
        position: fixed;
        top: 0;
        left: -260px;
        margin-right: -260px;
        z-index: 2;
    }

    #sidebar.hidden {
        left: 0;
        margin-right: 0;
    }

    .hide-sidebar {
        left: 53px;
        transform: rotate(180deg);
        padding: 15px 13px 11px 13px;
    }

    #sidebar.hidden .hide-sidebar {
        left: 0;
        transition: all 0.2s ease-in-out;
        transform: rotate(0deg);
    }

    .message {
        padding-left: 20px;
        padding-right: 20px;
        gap: 15px;
    }

    .message.assistant .thinking {
        font-size: 0.8rem;
        padding: 7px 10px;
    }

    .message.assistant .thinking-content {
        max-height: 96px;
    }

    #message-form {
        position: fixed;
        left: 0;
        right: 0;
        bottom: calc(var(--keyboard-offset) + env(safe-area-inset-bottom));
        z-index: 1200;
        max-width: none;
        padding: 8px 14px max(10px, env(safe-area-inset-bottom)) 14px;
        background: linear-gradient(to top, var(--color-main) 80%, var(--color-main-fade));
    }

    #message {
        font-size: 0.9em;
        max-height: 110px;
        padding: 13px 50px 13px 48px; /* space for both buttons */
    }

    .disclaimer {
        font-size: 0.5em;
    }
}

@media (max-width: 335px) {
    main {
        padding: 0 0 96px 0;
    }

    body {
        font-size: 0.8em;
    }

    #message-form {
        padding: 0px 20px 0 20px;
    }

    #message {
        padding: 13px 85px 13px 12px;
    }

    .message {
        padding: 15px 20px 7px 20px;
        gap: 8px;
    }

    #send-button {
        font-size: 0.8em;
        padding: 7px 8px 7px 7px;
        right: 11px;
    }

    .disclaimer {
        font-size: 0.6em;
        margin-top: 6px;
    }
}

@media (max-width: 260px) {
    .message {
        flex-direction: column;
    }

    .message i.user-icon {
        padding: 4px;
        width: 15px;
        height: 15px;
        font-size: 12px;
    }
}

.edit-title-input {
    background: transparent;
    border: 1px solid var(--color-border1);
    color: var(--color-text);
    font-size: inherit;
    font-family: inherit;
    width: 100%;
    padding: 2px 4px;
    border-radius: 4px;
    outline: none;
}

.edit-title-input:focus {
    border-color: var(--color-main);
}