/* base reset */
* {
	box-sizing: border-box;
}

/* scale everything up a touch */
html {
	font-size: 18px;
}
body {
	margin: 0;
	display: flex;
	flex-direction: column;
	height: 100vh;
	background: #000;
	color: #fff;
	font-family: Arial, sans-serif;
	line-height: 1.4;
}

/* file input */
#file-input {
	margin: 12px;
	font-size: 1rem;
	padding: 8px 12px;
}

/* chat area */
.chat-container {
	flex: 1;
	overflow-y: auto;
	padding: 16px;
	background: radial-gradient(circle at top left, #2b5876, #4e4376);
}

/* each bubble */
.message {
	display: inline-block;
	clear: both;
	margin: 8px 0;
	padding: 12px 16px;
	border-radius: 20px;
	max-width: 80%;
	word-wrap: break-word;
	font-size: 1rem;
}

/* left/right colours */
.message.left {
	float: left;
	background: #262626;
}
.message.right {
	float: right;
	background: #0095f6;
}

/* smaller screens tweak */
@media (max-width: 480px) {
	html {
		font-size: 16px;
	}

	#file-input {
		margin: 8px;
		font-size: 0.9rem;
		padding: 6px 10px;
	}

	.message {
		max-width: 90%;
		padding: 10px 14px;
		margin: 6px 0;
		border-radius: 18px;
	}

	.chat-container {
		padding: 12px;
	}
}