:root {
	--bg: #06070f;
	--ink: #eef0ff;
	--dim: rgba(238, 240, 255, 0.55);
	--glass: rgba(255, 255, 255, 0.055);
	--stroke: rgba(255, 255, 255, 0.11);
	--violet: #8b5cf6;
	--cyan: #22d3ee;
	--pink: #f472b6;
	--ok: #4ade80;
	--err: #fb7185;
	--radius: 20px;
}

* {
	box-sizing: border-box;
}

html,
body {
	height: 100%;
}

body {
	margin: 0;
	background: var(--bg);
	color: var(--ink);
	font-family: "Inter", system-ui, -apple-system, sans-serif;
	font-size: 15px;
	line-height: 1.5;
	overflow: hidden;
}

/* ---------- animated background ---------- */
.bg {
	position: fixed;
	inset: 0;
	z-index: -1;
	overflow: hidden;
	background:
		radial-gradient(1200px 700px at 85% -10%, rgba(139, 92, 246, 0.16), transparent 60%),
		radial-gradient(900px 600px at -10% 110%, rgba(34, 211, 238, 0.12), transparent 60%),
		var(--bg);
}

.blob {
	position: absolute;
	width: 46vmax;
	height: 46vmax;
	border-radius: 50%;
	filter: blur(90px);
	opacity: 0.35;
	animation: drift 26s ease-in-out infinite alternate;
}

.b1 { background: var(--violet); top: -18%; left: -12%; }
.b2 { background: var(--cyan); bottom: -22%; right: -14%; animation-delay: -8s; animation-duration: 32s; }
.b3 { background: var(--pink); top: 40%; left: 55%; width: 30vmax; height: 30vmax; opacity: 0.2; animation-delay: -16s; }

@keyframes drift {
	from { transform: translate3d(-4%, -3%, 0) scale(1); }
	to   { transform: translate3d(7%, 9%, 0) scale(1.18) rotate(12deg); }
}

.grain {
	position: absolute;
	inset: 0;
	opacity: 0.05;
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@media (prefers-reduced-motion: reduce) {
	.blob { animation: none; }
}

/* ---------- glass ---------- */
.glass {
	background: var(--glass);
	border: 1px solid var(--stroke);
	border-radius: var(--radius);
	backdrop-filter: blur(24px) saturate(150%);
	-webkit-backdrop-filter: blur(24px) saturate(150%);
	box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}

/* ---------- layout ---------- */
.shell {
	height: 100dvh;
	max-width: 860px;
	margin: 0 auto;
	padding: 16px;
	display: grid;
	grid-template-rows: auto 1fr auto;
	gap: 14px;
}

/* ---------- topbar ---------- */
.topbar {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 12px 18px;
	flex-wrap: wrap;
}

.brand {
	display: flex;
	align-items: center;
	gap: 12px;
	min-width: 0;
}

.logo-dot {
	width: 34px;
	height: 34px;
	flex: none;
	border-radius: 12px;
	background: conic-gradient(from 210deg, var(--violet), var(--cyan), var(--pink), var(--violet));
	box-shadow: 0 0 24px rgba(139, 92, 246, 0.65);
	animation: spin 9s linear infinite;
	position: relative;
}

.logo-dot::after {
	content: "";
	position: absolute;
	inset: 4px;
	border-radius: 8px;
	background: var(--bg);
}

@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .logo-dot { animation: none; } }

.brand-text h1 {
	margin: 0;
	font-family: "Space Grotesk", "Inter", sans-serif;
	font-size: 21px;
	letter-spacing: -0.02em;
	display: flex;
	align-items: baseline;
	gap: 8px;
	white-space: nowrap;
}

.t-gemma { font-weight: 700; }
.t-but { font-size: 12px; color: var(--dim); font-style: italic; font-weight: 400; }
.t-dumb {
	font-weight: 700;
	background: linear-gradient(90deg, var(--pink), var(--violet), var(--cyan));
	background-size: 200% auto;
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
	animation: shimmer 4s linear infinite;
}

@keyframes shimmer { to { background-position: 200% center; } }
@media (prefers-reduced-motion: reduce) { .t-dumb { animation: none; } }

#status {
	margin: 1px 0 0;
	font-size: 12px;
	color: var(--dim);
	display: flex;
	align-items: center;
	gap: 6px;
}

#status::before {
	content: "";
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: var(--dim);
	flex: none;
}

#status[data-state="ready"]::before { background: var(--ok); box-shadow: 0 0 10px var(--ok); }
#status[data-state="thinking"]::before { background: var(--cyan); box-shadow: 0 0 10px var(--cyan); animation: pulse 1s ease-in-out infinite; }
#status[data-state="error"]::before { background: var(--err); box-shadow: 0 0 10px var(--err); }

@keyframes pulse { 50% { opacity: 0.35; } }

/* ---------- dumb-o-meter ---------- */
.dumbmeter {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 8px 12px;
	border-radius: 999px;
	border: 1px solid var(--stroke);
	background: rgba(255, 255, 255, 0.04);
	cursor: pointer;
	user-select: none;
}

.dm-label {
	font-size: 12px;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--dim);
	white-space: nowrap;
}

.dm-value {
	font-family: "Space Grotesk", monospace;
	font-weight: 700;
	min-width: 1.6em;
	text-align: center;
	color: var(--pink);
}

input[type="range"] {
	appearance: none;
	-webkit-appearance: none;
	width: 130px;
	height: 5px;
	border-radius: 99px;
	background: linear-gradient(90deg, var(--cyan), var(--violet), var(--pink));
	outline: none;
}

input[type="range"]::-webkit-slider-thumb {
	appearance: none;
	-webkit-appearance: none;
	width: 17px;
	height: 17px;
	border-radius: 50%;
	background: #fff;
	border: 3px solid var(--violet);
	box-shadow: 0 2px 10px rgba(139, 92, 246, 0.6);
	cursor: grab;
	transition: transform 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.15); }
input[type="range"]::-moz-range-thumb {
	width: 15px;
	height: 15px;
	border-radius: 50%;
	background: #fff;
	border: 3px solid var(--violet);
	cursor: grab;
}

/* ---------- chat ---------- */
.chat {
	overflow-y: auto;
	padding: 20px;
	display: flex;
	flex-direction: column;
	gap: 14px;
	scroll-behavior: smooth;
	scrollbar-width: thin;
	scrollbar-color: rgba(255, 255, 255, 0.18) transparent;
}

.chat::-webkit-scrollbar { width: 8px; }
.chat::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.15); border-radius: 99px; }

.msg {
	max-width: 78%;
	animation: rise 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
}

@keyframes rise {
	from { opacity: 0; transform: translateY(14px) scale(0.97); }
	to   { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) { .msg { animation: none; } }

.msg.user { align-self: flex-end; }
.msg.bot { align-self: flex-start; }

.bubble {
	padding: 11px 16px;
	border-radius: 18px;
	white-space: pre-wrap;
	word-wrap: break-word;
	font-size: 14.5px;
}

.user .bubble {
	background: linear-gradient(135deg, var(--violet), #6366f1);
	border-bottom-right-radius: 6px;
	box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}

.bot .bubble {
	background: rgba(255, 255, 255, 0.07);
	border: 1px solid var(--stroke);
	border-bottom-left-radius: 6px;
}

.bubble.dots {
	display: inline-flex;
	gap: 5px;
	padding: 14px 18px;
}

.bubble.dots span {
	width: 7px;
	height: 7px;
	border-radius: 50%;
	background: var(--dim);
	animation: bounce 1.2s infinite;
}

.bubble.dots span:nth-child(2) { animation-delay: 0.15s; }
.bubble.dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes bounce {
	0%, 60%, 100% { transform: translateY(0); opacity: 0.5; }
	30% { transform: translateY(-5px); opacity: 1; }
}
@media (prefers-reduced-motion: reduce) { .bubble.dots span { animation: none; } }

/* ---------- composer ---------- */
.composer {
	display: flex;
	gap: 10px;
	padding: 10px;
	align-items: center;
}

#input {
	flex: 1;
	background: rgba(255, 255, 255, 0.05);
	border: 1px solid var(--stroke);
	border-radius: 14px;
	padding: 13px 16px;
	color: var(--ink);
	font: inherit;
	outline: none;
	transition: border-color 0.2s, box-shadow 0.2s;
}

#input::placeholder { color: var(--dim); }
#input:focus { border-color: var(--violet); box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.25); }
#input:disabled { opacity: 0.5; }

.btn {
	border: none;
	border-radius: 14px;
	padding: 12px 20px;
	font: inherit;
	font-weight: 600;
	cursor: pointer;
	transition: transform 0.15s ease, filter 0.2s, opacity 0.2s;
}

.btn:hover:not(:disabled) { transform: translateY(-1px); filter: brightness(1.12); }
.btn:active:not(:disabled) { transform: scale(0.96); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.send {
	background: linear-gradient(135deg, var(--violet), var(--cyan));
	color: #fff;
	box-shadow: 0 8px 24px rgba(139, 92, 246, 0.4);
}

.stop {
	background: rgba(251, 113, 133, 0.15);
	border: 1px solid rgba(251, 113, 133, 0.5);
	color: var(--err);
}

/* ---------- loading overlay ---------- */
.overlay {
	position: fixed;
	inset: 0;
	z-index: 10;
	display: grid;
	place-items: center;
	background: rgba(6, 7, 15, 0.72);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	transition: opacity 0.5s ease;
	padding: 20px;
}

.overlay.hide { opacity: 0; pointer-events: none; }

.loader {
	width: min(430px, 100%);
	padding: 28px 26px;
	text-align: center;
}

.loader h2 {
	margin: 0 0 18px;
	font-family: "Space Grotesk", sans-serif;
	font-size: 22px;
	background: linear-gradient(90deg, var(--cyan), var(--violet), var(--pink));
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.bar {
	height: 9px;
	border-radius: 99px;
	background: rgba(255, 255, 255, 0.08);
	overflow: hidden;
	border: 1px solid var(--stroke);
}

#barfill {
	height: 100%;
	width: 0%;
	border-radius: inherit;
	background: linear-gradient(90deg, var(--cyan), var(--violet), var(--pink));
	background-size: 200% auto;
	animation: shimmer 2.5s linear infinite;
	transition: width 0.3s ease;
}

#loadmsg {
	margin: 12px 0 0;
	font-size: 13px;
	color: var(--dim);
	font-variant-numeric: tabular-nums;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.hint {
	margin: 14px 0 0;
	font-size: 11.5px;
	color: rgba(238, 240, 255, 0.35);
	line-height: 1.5;
}

/* ---------- small screens ---------- */
@media (max-width: 560px) {
	.shell { padding: 10px; gap: 10px; }
	.msg { max-width: 90%; }
	.dumbmeter { order: 2; width: 100%; justify-content: space-between; }
	input[type="range"] { flex: 1; }
	.brand-text h1 { font-size: 18px; }
}