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

:root {

	--bg-primary: #090a11;
	--bg-secondary: #15172a;
	--bg-tertiary: #1e2136;
	--border: #2c2e40;
	--text-primary: #f5f6f7;
	--text-secondary: #bec3c9;
	--text-muted: #7f8497;
	--accent: #10a37f;
	--accent-hover: #0f8a6b;
	--error: #f85149;
	--success: #238636;
	--warning: #ffa500;


	--shadow-modal: inset 1px 1px 0 0 var(--border), 0 3px 8px 0 #000309;
	--shadow-button: inset 0 -2px 0 0 #282d55, inset 0 0 1px 1px #51577d, 0 2px 2px 0 rgba(3, 4, 9, 0.3);
	--shadow-footer: inset 0 1px 0 0 rgba(73, 76, 106, 0.5), 0 -4px 8px 0 rgba(0, 0, 0, 0.2);


	--transition: all 0.2s ease;
	--transition-slow: all 0.3s ease;


	--space-xs: 4px;
	--space-sm: 8px;
	--space-md: 12px;
	--space-lg: 16px;
	--space-xl: 20px;


	--radius-sm: 4px;
	--radius-md: 6px;
	--radius-lg: 8px;
	--radius-xl: 18px;
	--radius-pill: 20px;

	--sidebar-width: 280px;
}


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

body {
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
	background: var(--bg-primary);
	color: var(--text-primary);
}


.app-container {
	display: flex;
	height: 100%;
	position: relative;
}

.sidebar {
	width: var(--sidebar-width);
	min-width: 220px;
	max-width: 500px;
	background: var(--bg-secondary);
	display: flex;
	flex-direction: column;
	overflow: hidden;
	z-index: 1000;
	transition: margin-left var(--transition-slow);
	flex-shrink: 0;
}

.sidebar-header {
	padding: var(--space-lg);
	border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
	font-size: 18px;
	margin-bottom: var(--space-md);
}

.sidebar-resizer {
	width: 5px;
	background: var(--border);
	cursor: col-resize;
	z-index: 1001;
	transition: background-color 0.2s ease;
}

.sidebar-resizer:hover,
.sidebar-resizer.resizing {
	background: var(--accent);
}

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

.sessions-section {
	flex: 1;
	padding: var(--space-lg);
	overflow-y: auto;
}

.sessions-section h3 {
	font-size: 14px;
	color: var(--text-muted);
	margin-bottom: var(--space-md);
	text-transform: uppercase;
	letter-spacing: 0.5px;
}

.sessions-list {
	display: flex;
	flex-direction: column-reverse;
	gap: var(--space-xs);
}


.sidebar-footer {
	border-top: 1px solid var(--border);
	background: var(--bg-tertiary);
	padding: var(--space-md);
	padding-left: 10px;
}

.sidebar-overlay {
	display: none;
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.5);
	z-index: 999;
}

.sidebar-overlay.show {
	display: block;
}


.config-section {
	padding: var(--space-md) var(--space-lg);
	background: var(--bg-secondary);
	border-bottom: 1px solid var(--border);
	box-shadow: var(--shadow-modal);
}

.header-controls {
	display: flex;
	align-items: center;
	gap: var(--space-md);
}

.main-config-area {
	flex-grow: 1;
	min-width: 0;
}


.mobile-menu-toggle {
	display: none;
	flex-shrink: 0;
	z-index: 1001;
	background: transparent;
	border: 1px solid transparent;
	border-radius: var(--radius-lg);
	padding: var(--space-md);
	cursor: pointer;
	flex-direction: column;
	gap: var(--space-xs);
	transition: var(--transition-slow);
}

@media (max-width: 768px) {
	.sidebar {
		position: absolute;
		height: 100%;
		margin-left: calc(-1 * var(--sidebar-width));
		border-right: 1px solid var(--border);
	}

	.sidebar.show {
		margin-left: 0;
		box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
	}

	.sidebar-resizer {
		display: none;
	}

	.mobile-menu-toggle {
		display: flex;
	}

	.main-controls {
		flex-wrap: wrap;
		justify-content: flex-start;
	}

	.main-controls .model-select {
		width: 100%;
		max-width: none;
		margin-bottom: var(--space-sm);
	}
}

.mobile-menu-toggle span {
	width: 20px;
	height: 2px;
	background: var(--text-primary);
	transition: var(--transition-slow);
}

.mobile-menu-toggle.active span:nth-child(1) {
	transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
	opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
	transform: rotate(-45deg) translate(7px, -6px);
}


.btn {
	padding: var(--space-md);
	border: 1px solid transparent;
	border-radius: var(--radius-lg);
	cursor: pointer;
	font-size: 14px;
	transition: var(--transition);
	display: flex;
	align-items: center;
	justify-content: center;
	text-decoration: none;
}

.btn-primary {
	background: var(--accent);
	color: white;
}

.btn-primary:hover {
	background: var(--accent-hover);
}

.btn-secondary {
	background: var(--bg-tertiary);
	color: var(--text-primary);
	border-color: var(--border);
}

.btn-secondary:hover {
	background: var(--border);
	box-shadow: var(--shadow-button);
}

.btn-success {
	background: var(--success);
	color: white;
}

.btn-success:hover {
	background: #2ea043;
}

.btn-error {
	background: transparent;
	color: var(--error);
	border-color: transparent;
}

.btn-error:hover {
	background: rgba(248, 81, 73, 0.1);
	border-color: var(--error);
}

.btn:disabled {
	background: var(--border);
	color: var(--text-muted);
	cursor: not-allowed;
	transform: none;
}

.btn-icon {
	width: 40px;
	height: 40px;
	padding: 10px;
	background: transparent;
	color: var(--text-muted);
}

.btn-icon:hover {
	background: var(--bg-tertiary);
	color: var(--text-primary);
	border-color: var(--border);
}

.btn-icon:disabled {
	opacity: 0.5;
}


.action-buttons-group {
	display: flex;
	align-items: center;
	gap: var(--space-sm);
}

.form-input {
	padding: var(--space-md);
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	color: var(--text-primary);
	font-size: 14px;
	transition: var(--transition);
	font-family: inherit;
}

.form-input:focus {
	outline: none;
	border-color: var(--accent);
	box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.2);
}

.form-input::placeholder {
	color: var(--text-muted);
}

.form-select {
	padding: var(--space-md);
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	color: var(--text-primary);
	font-size: 14px;
	transition: var(--transition);
	font-family: inherit;
	appearance: none;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23bec3c9' viewBox='0 0 16 16'%3E%3Cpath d='M8 10.5L4 6.5h8L8 10.5z'/%3E%3C/svg%3E");
	background-repeat: no-repeat;
	background-position: right 12px center;
	background-size: 12px;
	padding-right: 40px;
}


.new-chat-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: var(--space-sm);
	width: 100%;
	padding: var(--space-md);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	cursor: pointer;
	font-size: 14px;
	font-weight: 600;
	transition: var(--transition);
	background: var(--bg-tertiary);
	color: var(--text-primary);
	text-decoration: none;
}

.new-chat-btn:hover {
	background: var(--border);
	box-shadow: var(--shadow-button);
}

.new-chat-btn span {
	font-size: 18px;
}

.api-key-input,
.model-select {
	flex: 1;
	min-width: 200px;
}


.streaming-toggle {
	display: flex;
	align-items: center;
	gap: var(--space-sm);
	color: var(--text-secondary);
	font-size: 14px;
	height: 40px;
	padding: 0 var(--space-md);
	background: var(--bg-tertiary);
	border: 1px solid var(--border);
	border-radius: var(--radius-md);
	transition: var(--transition);
}

.streaming-toggle:hover {
	background: var(--border);
}

.streaming-toggle.checked {
	color: var(--accent);
	border-color: var(--accent);
}

.streaming-toggle .checkbox {
	display: none;
}

.streaming-toggle label {
	cursor: pointer;
}


.file-input {
	display: none;
}

.send-button {
	padding: 10px var(--space-lg);
	border-radius: var(--radius-pill);
	border: 1px solid var(--border);
	background: var(--bg-tertiary);
	color: var(--text-primary);
	cursor: pointer;
	transition: var(--transition);
	display: flex;
	align-items: center;
	gap: var(--space-sm);
	font-size: 14px;
}

.file-upload-btn:hover {
	background: var(--border);
	box-shadow: var(--shadow-button);
}

.send-button {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	padding: 0;
	background: var(--accent);
	color: white;
	border: none;
	cursor: pointer;
	transition: var(--transition);
	flex-shrink: 0;
}

.send-button:hover {
	background: var(--accent-hover);
}

.send-button:disabled,
.clear-button:disabled {
	background: var(--border);
	color: var(--text-muted);
	cursor: not-allowed;
	transform: none;
	box-shadow: none;
}

.checkbox {
	appearance: none;
	width: 18px;
	height: 18px;
	border: 2px solid var(--border);
	border-radius: var(--radius-sm);
	background: var(--bg-primary);
	cursor: pointer;
	position: relative;
	transition: var(--transition);
}

.checkbox:checked {
	background: var(--accent);
	border-color: var(--accent);
}

.checkbox:checked::after {
	content: '✓';
	position: absolute;
	top: -2px;
	left: 2px;
	color: white;
	font-size: 12px;
	font-weight: bold;
}

.chat-container {
	flex: 1;
	display: flex;
	flex-direction: column;

	overflow: hidden;
}


.config-row:last-child {
	margin-bottom: 0;
}

.chat-messages {
	flex: 1;
	padding: var(--space-xl);
	overflow-y: auto;
	background: var(--bg-primary);
}

.message {
	margin-bottom: 24px;
	animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
	from {
		opacity: 0;
		transform: translateY(10px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.message.user {
	text-align: right;
	max-width: 1600px;
}

.message.assistant {
	text-align: left;
}

.message-copy-u {
	top: -11px;
	position: relative;
	right: 11px;
	border-width: 1px;
	border-radius: 4px;
	background: #546c30;
}

.message-copy {
	top: -11px;
	position: relative;
	right: -15px;
	border-width: 1px;
	border-radius: 4px;
	background: #30346c;
}

.message-content {
	display: inline-block;
	max-width: 80%;
	padding: var(--space-lg) var(--space-xl);
	border-radius: var(--radius-xl);
	word-wrap: break-word;
	line-height: 1.5;
	font-size: 15px;
	white-space: pre-wrap;
}

.message.user .message-content {
	background: var(--accent);
	color: white;
}

.message.assistant .message-content {
	background: var(--bg-secondary);
	color: var(--text-primary);
	border: 1px solid var(--border);
	box-shadow: var(--shadow-modal);
}


.input-section {
	padding: var(--space-lg);
	background: var(--bg-secondary);
	border-top: 1px solid var(--border);
	box-shadow: var(--shadow-footer);
}

.input-container {
	display: flex;
	gap: var(--space-sm);
	align-items: flex-end;
	width: 100%;
}

.message-input {
	flex: 1;
	min-width: 100px;
	min-height: 44px;
	max-height: 200px;
	padding: 12px var(--space-lg);
	background: var(--bg-secondary);
	border: 1px solid var(--border);
	border-radius: var(--radius-xl);
	resize: none;
	font-size: 15px;
	font-family: inherit;
	color: var(--text-primary);
	transition: var(--transition);
}

.message-input:focus {
	outline: none;
	border-color: var(--accent);
	box-shadow: 0 0 0 1px rgba(16, 163, 127, 0.3);
}


.file-upload-container {
	display: flex;
	align-items: flex-end;
	gap: var(--space-sm);
	padding-bottom: 2px;
}

.uploaded-files {
	display: flex;
	gap: var(--space-md);
	flex-wrap: wrap;
	margin-bottom: var(--space-sm);
	align-items: center;
	max-width: 260px;
	max-height: 35px;
	order: 1;
	top: 3px;

}

.uploaded-file {
	display: flex;
	align-items: center;
	gap: var(--space-xs);
	background: var(--bg-tertiary);
	color: var(--text-primary);
	padding: var(--space-xs) var(--space-sm);
	border-radius: 16px;
	font-size: 12px;
	border: 1px solid var(--border);
	max-width: 150px;
	text-overflow: ellipsis;
	white-space: nowrap;
	overflow: hidden;
}

.uploaded-file img {
	width: 14px;
	height: 14px;
	border-radius: 2px;
	object-fit: cover;
}

.uploaded-file-name {
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	max-width: 65px;
	display: inline-block;
}

.remove-file-btn {
	background: none;
	border: none;
	color: var(--text-muted);
	cursor: pointer;
	font-size: 12px;
	line-height: 1;
}

.remove-file-btn:hover {
	color: var(--error);
}

.uploaded-file-preview {
	padding: var(--space-xs) 11px;
	background: rgba(30, 33, 54, 0.5);
	border-radius: var(--radius-md);
	font-size: 12px;
	color: var(--text-primary);
	border: 1px solid var(--border);
	display: inline-block;
}


.action-buttons {
	display: flex;
	align-items: flex-end;
	gap: var(--space-sm);
}

#clearButton {
	background-color: var(--bg-tertiary);
}

#clearButton:hover {
	background-color: var(--error);
	color: white;
	border-color: var(--error);
}


.code-block {
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	margin: var(--space-md) 0;
	overflow: hidden;
	box-shadow: var(--shadow-modal);
}

.code-block-header {
	background: var(--bg-tertiary);
	color: var(--text-muted);
	padding: var(--space-sm) var(--space-md);
	font-size: 12px;
	font-weight: 600;
	border-bottom: 1px solid var(--border);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.code-block-content {
	padding: var(--space-lg);
	overflow-x: auto;
	font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
	font-size: 13px;
	line-height: 1.45;
	color: var(--text-primary);
	white-space: pre;
	text-align: start;
}

.copy-btn {
	background: var(--border);
	border: none;
	color: var(--text-muted);
	padding: var(--space-xs) var(--space-sm);
	border-radius: var(--radius-sm);
	cursor: pointer;
	font-size: 11px;
	transition: var(--transition);
}

.copy-btn:hover {
	background: #484f58;
	color: var(--text-primary);
}


.message-content code {
	background: var(--bg-secondary);
	color: #8ec2db;
	padding: 2px var(--space-md);
	border-radius: var(--radius-sm);
	font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
	font-size: 13px;
	border: 1px solid var(--border);
}

.message-content pre {
	background: var(--bg-primary);
	color: var(--text-primary);
	padding: var(--space-lg);
	border-radius: var(--radius-lg);
	overflow-x: auto;
	font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
	font-size: 13px;
	line-height: 1.45;
	border: 1px solid var(--border);
	white-space: pre-wrap;
	text-align: start;
}


.message.assistant .markdown-heading {
	color: #dbfaff;
	font-weight: bold;
	margin: 0.8em 0 0.4em 0;
	line-height: 1.3;
}

.message.assistant h1.markdown-heading {
	font-size: 1.5em;
	border-bottom: 2px solid #1f6feb;
	padding-bottom: 0.2em;
}

.message.assistant h2.markdown-heading {
	font-size: 1.3em;
	border-bottom: 1px solid #1f6feb;
	padding-bottom: 0.1em;
}

.message.assistant h3.markdown-heading {
	font-size: 1.2em;
}

.message.assistant h4.markdown-heading {
	font-size: 1.1em;
}

.message.assistant .markdown-bold {
	font-weight: bold;
	color: #dbfaff;
}

.code-block-content *,
.code-block-content .markdown-heading,
.code-block-content .markdown-bold {
	color: inherit !important;
	font-weight: inherit !important;
	border: none !important;
}


.latex-display {
	margin: 10px 0;
	text-align: center;
	overflow-x: auto;
}

.latex-inline {
	display: inline;
}

.MathJax {
	font-size: 1em !important;
}

.api-key-input {
	flex: 2;
	min-width: 200px;
	padding: 12px;
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: 8px;
	color: var(--chat-text-primary);
	font-size: 14px;
	transition: border-color 0.2s;
}

.model-select {
	flex: 1;
	min-width: 150px;
	padding: 12px;
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: 8px;
	color: var(--chat-text-primary);
	font-size: 14px;
	transition: border-color 0.2s;
}


.session-item {
	padding: var(--space-md);
	background: var(--bg-primary);
	border: 1px solid var(--bg-tertiary);
	border-radius: var(--radius-lg);
	cursor: pointer;
	transition: var(--transition);
	font-size: 14px;
	color: var(--text-primary);
	position: relative;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.session-item:hover {
	background: var(--bg-tertiary);
	border-color: var(--border);
}

.session-item.active {
	background: var(--accent);
	border-color: var(--accent-hover);
	color: white;
}

.session-item .session-date {
	font-size: 11px;
	color: var(--text-muted);
	margin-top: var(--space-xs);
}

.session-item .created-date {
	margin-top: 2px;
	opacity: 0.7;
}

.session-item.active .session-date {
	color: rgba(255, 255, 255, 0.8);
}

.session-delete-btn {
	position: absolute;
	right: var(--space-sm);
	top: 50%;
	transform: translateY(-50%);
	background: var(--error);
	color: white;
	border: none;
	border-radius: var(--radius-sm);
	width: 20px;
	height: 20px;
	font-size: 12px;
	cursor: pointer;
	opacity: 0;
	transition: opacity var(--transition);
}

.session-item:hover .session-delete-btn {
	opacity: 1;
}


.session-controls {
	display: flex;
	gap: var(--space-md);
	margin-top: var(--space-md);
	align-items: center;
	flex-wrap: wrap;
}

.session-name-input {


	padding: var(--space-sm) var(--space-md);
	background: var(--bg-primary);
	border: 1px solid var(--border);
	border-radius: var(--radius-md);
	color: var(--text-primary);
	font-size: 13px;
	transition: var(--transition);
}

.session-name-input:focus {
	outline: none;
	border-color: var(--accent);
	box-shadow: 0 0 0 2px rgba(16, 163, 127, 0.2);
}

.auto-save-indicator {
	display: flex;
	align-items: center;
	gap: var(--space-md);
	font-size: 12px;
	color: var(--text-muted);
	opacity: 0;
	transition: opacity var(--transition-slow);
	transform: translate(130%, -20%);
}

.auto-save-indicator.show {
	opacity: 1;
}

.auto-save-indicator.saving {
	color: var(--warning);
}

.auto-save-indicator.saved {
	color: var(--success);
}


.sidebar-actions {
	display: flex;
	gap: var(--space-sm);
	margin-top: var(--space-md);
}

.sidebar-action-btn {
	flex: 1;
	padding: var(--space-sm) var(--space-md);
	border-radius: var(--radius-md);
	background: var(--bg-primary);
	border: 1px solid var(--border);
	color: var(--text-secondary);
	font-size: 13px;
	font-weight: 500;
	cursor: pointer;
	transition: var(--transition);
	text-align: center;
}

.sidebar-action-btn:hover {
	background: var(--border);
	color: var(--text-primary);
}

.sidebar-action-btn.delete {
	background: var(--bg-primary);
	border-color: var(--error);
	color: var(--error);
}

.sidebar-action-btn.delete:hover {
	background: var(--error);
	color: white;
}


.streaming-cursor {
	display: inline-block;
	width: 2px;
	height: 20px;
	background: var(--accent);
	margin-left: 2px;
	animation: blink 1s infinite;
}

@keyframes blink {

	0%,
	50% {
		opacity: 1;
	}

	51%,
	100% {
		opacity: 0;
	}
}

.typing-indicator {
	display: none;
	padding: var(--space-lg) var(--space-xl);
	font-style: italic;
	color: var(--text-muted);
	font-size: 14px;
}

.typing-dots::after {
	content: '';
	animation: dots 1.5s infinite;
}

@keyframes dots {

	0%,
	20% {
		content: '.';
	}

	40% {
		content: '..';
	}

	60%,
	100% {
		content: '...';
	}
}

.error-message {
	background: var(--bg-tertiary);
	color: var(--error);
	padding: var(--space-lg);
	border-radius: var(--radius-lg);
	margin: var(--space-md) 0;
	border: 1px solid var(--error);
	font-size: 14px;
}

.model-info {
	font-size: 12px;
	color: var(--text-muted);
	margin-bottom: -5px;
	margin-top: 1px;
	line-height: 1.4;
	text-align: center;
}

.loading {
	opacity: 0.6;
	pointer-events: none;
}

.loading::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 20px;
	height: 20px;
	margin: -10px 0 0 -10px;
	border: 2px solid var(--border);
	border-top: 2px solid var(--accent);
	border-radius: 50%;
	animation: spin 1s linear infinite;
}

@keyframes spin {
	0% {
		transform: rotate(0deg);
	}

	100% {
		transform: rotate(360deg);
	}
}


.file-summary {
	background: var(--bg-secondary);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	margin: var(--space-sm) 0;
	overflow: hidden;
}

.file-summary-header {
	display: flex;
	align-items: center;
	padding: var(--space-md) var(--space-lg);
	background: var(--bg-tertiary);
	border-bottom: 1px solid var(--border);
	cursor: pointer;
	user-select: none;
	transition: var(--transition);
}

.file-summary-header:hover {
	background: var(--border);
}

.file-summary-icon {
	margin-right: var(--space-sm);
	font-size: 16px;
	color: var(--text-secondary);
	transition: transform var(--transition);
}

.file-summary.collapsed .file-summary-icon {
	transform: rotate(-90deg);
}

.file-summary-info {
	flex: 1;
	display: flex;
	align-items: center;
	gap: var(--space-md);
}

.file-summary-name {
	font-weight: 600;
	color: var(--accent);
}

.file-summary-stats {
	color: var(--text-muted);
	font-size: 14px;
}

.file-summary-content {
	max-height: 300px;
	overflow: auto;
	transition: max-height var(--transition-slow);
}

.file-summary.collapsed .file-summary-content {
	max-height: 0;
	overflow: hidden;
}

.file-summary-text {
	padding: var(--space-lg);
	background: var(--bg-primary);
	color: var(--text-primary);
	font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
	font-size: 13px;
	line-height: 1.4;
	white-space: pre;
	word-break: break-word;
	border: none;
	margin: 0;
	overflow: auto;
}


.chat-messages::-webkit-scrollbar,
.sessions-list::-webkit-scrollbar,
.uploaded-files::-webkit-scrollbar {
	width: 8px;
}

.chat-messages::-webkit-scrollbar-track,
.sessions-list::-webkit-scrollbar-track,
.uploaded-files::-webkit-scrollbar-track {
	background: var(--bg-secondary);
}

.chat-messages::-webkit-scrollbar-thumb,
.sessions-list::-webkit-scrollbar-thumb,
.uploaded-files::-webkit-scrollbar-thumb {
	background: var(--border);
	border-radius: var(--radius-sm);
}

.chat-messages::-webkit-scrollbar-thumb:hover,
.sessions-list::-webkit-scrollbar-thumb:hover,
.uploaded-files::-webkit-scrollbar-thumb:hover {
	background: #484f58;
}


@media (max-width: 480px) {

	.config-section {
		padding: var(--space-sm);
	}

	.chat-messages {
		padding: var(--space-md) var(--space-sm);
	}

	.input-section {
		padding: var(--space-md) var(--space-sm);
	}

	.message-content {
		max-width: 98%;
		font-size: 13px;
		padding: 10px 14px;
	}

	.sidebar {
		position: absolute;
		height: 100%;
		margin-left: calc(-1 * var(--sidebar-width));
		border-right: 1px solid var(--border);
	}

	.session-controls {
		gap: var(--space-sm);
	}

	.auto-save-indicator {
		font-size: 11px;
	}


	.main-controls {
		flex-wrap: nowrap;
		gap: var(--space-sm);
	}

	.main-controls .model-select {
		width: auto;
		margin-bottom: 0;
		flex-grow: 1;
		min-width: 100px;
		max-width: 150px;
		padding: var(--space-sm);
		font-size: 12px;
		height: 40px;
	}

	.action-buttons-group {
		flex-shrink: 0;
	}


	.action-buttons-group .top-btn,
	.action-buttons-group .streaming-toggle {
		height: 40px;
		padding: var(--space-sm);
	}


}

@media (prefers-color-scheme: dark) {
	:root {
		--bg-primary: #090a11;
		--bg-secondary: #15172a;
		--bg-tertiary: #1e2136;
	}
}

@media (-webkit-min-device-pixel-ratio: 2),
(min-resolution: 192dpi) {
	.preview-image {
		image-rendering: -webkit-optimize-contrast;
		image-rendering: crisp-edges;
	}
}


.slim-config-container {
	display: none;
	align-items: center;
	gap: var(--space-md);
	padding: var(--space-sm) 0;
}

.slim-config-container .model-select {
	flex-grow: 1;
	min-width: 150px;
	padding: var(--space-sm);
	font-size: 13px;
	height: 38px;
}

.slim-config-container .streaming-toggle {
	flex-shrink: 0;
}

.top-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	padding: 0;
	border-radius: var(--radius-md);
	background: var(--bg-tertiary);
	border: 1px solid var(--border);
	color: var(--text-primary);
	font-size: 18px;
	cursor: pointer;
	transition: var(--transition);
	flex-shrink: 0;
}

.top-btn:hover {
	background: var(--border);
	border-color: var(--accent);
}


.icon-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 40px;
	height: 40px;
	padding: 0;
	border-radius: var(--radius-md);
	background: var(--bg-tertiary);
	border: 1px solid var(--border);
	color: var(--text-primary);
	font-size: 18px;
	cursor: pointer;
	transition: var(--transition);
	flex-shrink: 0;
}

.icon-btn:hover {
	background: var(--border);
	border-color: var(--accent);
}

.icon-btn:disabled {
	background: var(--bg-tertiary);
	color: var(--text-muted);
	cursor: not-allowed;
	border-color: var(--border);
}


.config-section.api-key-valid .api-key-input {
	display: none;
}

.config-section.api-key-valid .main-controls {
	display: flex;
	width: 100%;
}


.main-controls {
	display: none;
	align-items: center;
	gap: var(--space-sm);
	width: 100%;

	justify-content: space-between;
}


.main-controls .model-select {
	flex-grow: 1;
	max-width: 350px;
}


.chat-messages {
	-webkit-overflow-scrolling: touch;
}


.uploaded-files {
	position: relative;
}

.file-list-popup {
	display: none;
	position: absolute;
	bottom: calc(100% + 8px);
	left: 0;
	width: 150px;
	background: var(--bg-tertiary);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
	padding: var(--space-sm);
	z-index: 1010;
}

.uploaded-files.active .file-list-popup {
	display: block;
}

.file-list-popup .uploaded-file {
	display: flex;
	justify-content: space-between;
	width: 100%;
	margin: 0;
	padding: var(--space-sm) var(--space-md);
}

.file-list-popup .uploaded-file:not(:last-child) {
	margin-bottom: var(--space-xs);
}

.file-list-popup .uploaded-file-name {
	max-width: 180px;
}

.message.error .message-content {
	background: rgba(248, 81, 73, 0.15);
	color: var(--error);
	border: 1px solid var(--error);
	box-shadow: none;
}

.message.error .message-content strong {
	color: var(--text-primary);
}