:root {
	--bg: #eceef2;
	--card: #ffffff;
	--text: #1f2937;
	--muted: #5f6b7a;
	--primary: #2d7be5;
	--primary-hover: #1a5bb8;
	--border: #d6dde8;
	--shadow: 0 12px 34px rgba(23, 35, 61, 0.14);
}

* {
	box-sizing: border-box;
}

body {
	background: radial-gradient(circle at top right, #f5f8ff 0%, var(--bg) 42%, #e7e9ee 100%);
	font-family: "Segoe UI", Arial, sans-serif;
	color: var(--text);
	margin: 0;
	padding: 24px;
	min-height: 100vh;
	display: grid;
	place-items: center;
}

.container {
	width: min(700px, 100%);
	background: var(--card);
	border-radius: 16px;
	box-shadow: var(--shadow);
	padding: 32px;
	border: 1px solid rgba(214, 221, 232, 0.45);
}

h1 {
	text-align: center;
	color: var(--primary);
	margin: 0 0 10px;
	font-size: clamp(1.85rem, 3vw, 2.35rem);
	line-height: 1.15;
}

.subtitle {
	text-align: center;
	color: var(--muted);
	margin: 0 0 22px;
	font-size: 1.02rem;
}

form {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

form p {
	margin: 0;
	display: flex;
	flex-direction: column;
	gap: 8px;
}

label {
	font-weight: 600;
	color: #334155;
}

input[type="url"],
input[type="text"] {
	width: 100%;
	font-size: 1rem;
	padding: 12px 14px;
	border-radius: 10px;
	border: 1px solid var(--border);
	outline: none;
	transition: border-color 0.2s, box-shadow 0.2s;
	background: #fff;
}

input[type="url"]:focus,
input[type="text"]:focus {
	border-color: var(--primary);
	box-shadow: 0 0 0 3px rgba(45, 123, 229, 0.16);
}

button {
	background: var(--primary);
	color: #fff;
	border: none;
	cursor: pointer;
	font-weight: 700;
	letter-spacing: 0.2px;
	padding: 12px 20px;
	border-radius: 10px;
	transition: background 0.2s ease, transform 0.08s ease;
	align-self: flex-start;
}

button:hover {
	background: var(--primary-hover);
}

button:active {
	transform: translateY(1px);
}

.url-label {
	text-align: center;
	color: var(--muted);
	margin: 4px 0 12px;
}

a {
	color: var(--primary);
	text-decoration: none;
	font-weight: 600;
}

a:hover {
	text-decoration: underline;
}

.short-url {
	display: block;
	background: #f1f6ff;
	color: var(--primary);
	padding: 12px 14px;
	border-radius: 10px;
	margin: 0 auto 14px;
	font-size: 1rem;
	font-weight: 700;
	text-align: center;
	word-break: break-word;
	overflow-wrap: anywhere;
	max-width: 100%;
	border: 1px solid #d5e4fb;
}

.copy-row {
	display: grid;
	grid-template-columns: 1fr auto;
	gap: 10px;
	align-items: center;
	margin-bottom: 14px;
}

button.copy-btn {
	width: auto;
	min-width: 94px;
	align-self: stretch;
}

.redirect-info,
.note {
	text-align: center;
	margin: 8px 0;
	line-height: 1.45;
}

.note {
	color: var(--muted);
	font-size: 0.95rem;
}

.back-link {
	display: block;
	text-align: center;
	margin-top: 18px;
}

@media (max-width: 640px) {
	body {
		padding: 14px;
	}

	.container {
		padding: 22px 16px;
	}

	.copy-row {
		grid-template-columns: 1fr;
	}

	button,
	button.copy-btn {
		width: 100%;
	}
}