:root {
	--bg: #0b0f14;
	--surface: #121820;
	--surface-2: #1a222c;
	--border: #26313d;
	--text: #e6edf3;
	--text-dim: #8b98a5;
	--accent: #22d3ee;
	--accent-dim: #0e7490;
	--error: #f87171;
	--font-body: "Inter", system-ui, -apple-system, sans-serif;
	--font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
	box-sizing: border-box;
}

html, body {
	margin: 0;
	padding: 0;
	height: 100%;
	background: var(--bg);
	color: var(--text);
	font-family: var(--font-body);
}

.hidden {
	display: none !important;
}

.screen {
	height: 100vh;
	display: flex;
	flex-direction: column;
}

/* --- Login --- */

#login-screen {
	align-items: center;
	justify-content: center;
}

.login-card {
	width: 100%;
	max-width: 360px;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 12px;
	padding: 32px;
}

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

.brand-mark {
	width: 24px;
	height: 24px;
	object-fit: contain;
}

.brand-name {
	font-weight: 700;
	font-size: 18px;
	letter-spacing: -0.01em;
}

.brand-sub {
	color: var(--text-dim);
	font-size: 13px;
	margin: 6px 0 24px;
}

#login-form {
	display: flex;
	flex-direction: column;
	gap: 14px;
}

#login-form label {
	display: flex;
	flex-direction: column;
	gap: 6px;
	font-size: 13px;
	color: var(--text-dim);
}

#login-form input {
	background: var(--surface-2);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 10px 12px;
	color: var(--text);
	font-family: var(--font-body);
	font-size: 14px;
}

#login-form input:focus {
	outline: none;
	border-color: var(--accent-dim);
}

#login-form button[type="submit"] {
	margin-top: 6px;
	background: var(--accent);
	color: #06222b;
	border: none;
	border-radius: 8px;
	padding: 11px;
	font-weight: 600;
	font-size: 14px;
	cursor: pointer;
}

#login-form button[type="submit"]:hover {
	background: #67e3f5;
}

.error-text {
	color: var(--error);
	font-size: 13px;
	margin: 0;
	min-height: 1em;
}

/* --- Chat --- */

.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 12px 20px;
	border-bottom: 1px solid var(--border);
	background: var(--surface);
}

.topbar-right {
	display: flex;
	align-items: center;
	gap: 14px;
}

.usage-indicator {
	font-family: var(--font-mono);
	font-size: 12px;
	color: var(--text-dim);
}

.user-name {
	font-size: 13px;
	color: var(--text-dim);
}

.ghost-btn {
	background: transparent;
	border: 1px solid var(--border);
	color: var(--text);
	border-radius: 6px;
	padding: 6px 12px;
	font-size: 13px;
	cursor: pointer;
}

.ghost-btn:hover {
	border-color: var(--accent-dim);
	color: var(--accent);
}

.messages {
	flex: 1;
	overflow-y: auto;
	padding: 24px;
	display: flex;
	flex-direction: column;
	gap: 16px;
	max-width: 820px;
	width: 100%;
	margin: 0 auto;
}

.bubble {
	max-width: 80%;
	padding: 12px 14px;
	border-radius: 10px;
	font-size: 14px;
	line-height: 1.5;
	word-wrap: break-word;
}

.bubble.user {
	align-self: flex-end;
	background: var(--accent-dim);
	color: #eafcff;
	white-space: pre-wrap;
}

.bubble.assistant {
	align-self: flex-start;
	max-width: 88%;
	background: var(--surface-2);
	border: 1px solid var(--border);
}

/* Assistant replies are rendered from Markdown (see app.js's
   renderMarkdown()) - real <p>/<ul>/<table>/<pre> elements, not preformatted
   text, so no white-space: pre-wrap here (that would double up on the
   spacing these elements already carry). */
.bubble.assistant > *:first-child {
	margin-top: 0;
}

.bubble.assistant > *:last-child {
	margin-bottom: 0;
}

.bubble.assistant p {
	margin: 0 0 10px;
}

.bubble.assistant ul,
.bubble.assistant ol {
	margin: 0 0 10px;
	padding-left: 22px;
}

.bubble.assistant li {
	margin-bottom: 4px;
}

.bubble.assistant strong {
	color: #fff;
}

.bubble.assistant code {
	font-family: var(--font-mono);
	font-size: 12.5px;
	background: rgba(255, 255, 255, 0.08);
	padding: 2px 5px;
	border-radius: 4px;
}

.bubble.assistant pre {
	background: var(--bg);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 10px 12px;
	overflow-x: auto;
	margin: 0 0 10px;
}

.bubble.assistant pre code {
	background: none;
	padding: 0;
}

.bubble.assistant table {
	border-collapse: collapse;
	width: 100%;
	margin: 0 0 10px;
	font-size: 13px;
}

.bubble.assistant th,
.bubble.assistant td {
	border: 1px solid var(--border);
	padding: 6px 8px;
	text-align: left;
}

.bubble.assistant th {
	background: rgba(255, 255, 255, 0.04);
	font-weight: 600;
}

.bubble.assistant blockquote {
	border-left: 3px solid var(--accent-dim);
	margin: 0 0 10px;
	padding: 2px 12px;
	color: var(--text-dim);
}

.bubble.assistant a {
	color: var(--accent);
}

.bubble.assistant h1,
.bubble.assistant h2,
.bubble.assistant h3 {
	font-size: 15px;
	margin: 0 0 8px;
}

.bubble.assistant.pending::after {
	content: "▍";
	color: var(--accent);
	animation: blink 1s step-start infinite;
}

.bubble.error {
	align-self: flex-start;
	background: rgba(248, 113, 113, 0.1);
	border: 1px solid var(--error);
	color: var(--error);
	white-space: pre-wrap;
}

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

.chat-input-row {
	display: flex;
	gap: 10px;
	padding: 16px 24px 24px;
	max-width: 820px;
	width: 100%;
	margin: 0 auto;
	box-sizing: border-box;
}

.chat-input-row textarea {
	flex: 1;
	resize: none;
	background: var(--surface-2);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 10px 12px;
	color: var(--text);
	font-family: var(--font-body);
	font-size: 14px;
	max-height: 160px;
}

.chat-input-row textarea:focus {
	outline: none;
	border-color: var(--accent-dim);
}

.chat-input-row button {
	background: var(--accent);
	color: #06222b;
	border: none;
	border-radius: 8px;
	padding: 0 20px;
	font-weight: 600;
	font-size: 14px;
	cursor: pointer;
}

.chat-input-row button:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

/* --- Suggested Questions (empty-conversation state) --- */

.suggestions {
	max-width: 640px;
	margin: 40px auto 0;
	text-align: center;
}

.suggestions-title {
	color: var(--text-dim);
	font-size: 13px;
	margin: 0 0 14px;
}

.suggestions-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 10px;
}

.suggestion-chip {
	background: var(--surface-2);
	border: 1px solid var(--border);
	color: var(--text);
	border-radius: 8px;
	padding: 12px 14px;
	font-size: 13px;
	text-align: left;
	cursor: pointer;
	font-family: var(--font-body);
}

.suggestion-chip:hover {
	border-color: var(--accent-dim);
	color: var(--accent);
}

@media (max-width: 600px) {
	.suggestions-grid {
		grid-template-columns: 1fr;
	}
}

/* --- Admin Panel --- */

.overlay {
	position: fixed;
	inset: 0;
	background: rgba(0, 0, 0, 0.6);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 10;
}

.admin-panel {
	width: 100%;
	max-width: 640px;
	max-height: 85vh;
	overflow-y: auto;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: 12px;
	padding: 24px;
}

.admin-panel-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	font-weight: 600;
	font-size: 16px;
	margin-bottom: 16px;
}

.admin-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 13px;
	margin-bottom: 16px;
}

.admin-table th,
.admin-table td {
	border-bottom: 1px solid var(--border);
	padding: 8px 6px;
	text-align: left;
}

.admin-table th {
	color: var(--text-dim);
	font-weight: 500;
}

.admin-panel-divider {
	border-top: 1px solid var(--border);
	margin: 16px 0;
}

.admin-form-title {
	font-size: 13px;
	color: var(--text-dim);
	margin: 0 0 10px;
}

.admin-form {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.admin-form input[type="text"],
.admin-form input[type="password"],
.admin-form input[type="number"] {
	background: var(--surface-2);
	border: 1px solid var(--border);
	border-radius: 8px;
	padding: 9px 11px;
	color: var(--text);
	font-family: var(--font-body);
	font-size: 13px;
	width: 100%;
}

.admin-checkbox {
	display: flex;
	align-items: center;
	gap: 8px;
	font-size: 13px;
	color: var(--text-dim);
}

.admin-form-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 10px;
}

.admin-form-row label {
	display: flex;
	flex-direction: column;
	gap: 4px;
	font-size: 12px;
	color: var(--text-dim);
}

.admin-form button[type="submit"] {
	margin-top: 4px;
	background: var(--accent);
	color: #06222b;
	border: none;
	border-radius: 8px;
	padding: 10px;
	font-weight: 600;
	font-size: 13px;
	cursor: pointer;
}