/* 管理后台登录页 — 白色简洁风 */
*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

.login-page {
	min-height: 100vh;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
	color: #334155;
	background: #f5f7fb;
	overflow-x: hidden;
}

.login-page::before {
	content: "";
	position: fixed;
	inset: 0;
	z-index: 0;
	pointer-events: none;
	background:
		linear-gradient(120deg, rgba(37, 99, 235, 0.16), transparent 35%),
		linear-gradient(300deg, rgba(14, 165, 233, 0.14), transparent 40%);
}

.login-bg {
	position: fixed;
	inset: 0;
	z-index: 0;
	background:
		radial-gradient(ellipse 100% 80% at 15% 20%, rgba(59, 130, 246, 0.2), transparent 55%),
		radial-gradient(ellipse 80% 60% at 85% 10%, rgba(14, 165, 233, 0.18), transparent 50%),
		radial-gradient(ellipse 60% 50% at 50% 100%, rgba(99, 102, 241, 0.14), transparent 45%),
		linear-gradient(165deg, #f8fbff 0%, #f3f6fb 50%, #eef3fa 100%);
	pointer-events: none;
	animation: bgFloat 14s ease-in-out infinite alternate;
}

.login-grid {
	position: fixed;
	inset: 0;
	z-index: 0;
	opacity: 0.2;
	background-image:
		linear-gradient(rgba(59, 130, 246, 0.28) 1px, transparent 1px),
		linear-gradient(90deg, rgba(59, 130, 246, 0.28) 1px, transparent 1px);
	background-size: 56px 56px;
	pointer-events: none;
	mask-image: radial-gradient(ellipse 75% 65% at 50% 45%, black 15%, transparent 70%);
	-webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 45%, black 15%, transparent 70%);
	animation: gridShift 18s linear infinite;
}

.login-grid::before,
.login-grid::after {
	content: "";
	position: absolute;
	inset: 0;
	pointer-events: none;
}

/* 科技扫描线 */
.login-grid::before {
	background: linear-gradient(
		180deg,
		transparent 0%,
		rgba(59, 130, 246, 0.06) 48%,
		rgba(14, 165, 233, 0.08) 50%,
		rgba(59, 130, 246, 0.06) 52%,
		transparent 100%
	);
	transform: translateY(-100%);
	animation: scanLine 10s linear infinite;
}

/* 轻电路光斑 */
.login-grid::after {
	background:
		radial-gradient(circle at 20% 28%, rgba(37, 99, 235, 0.18) 0 2px, transparent 3px),
		radial-gradient(circle at 76% 32%, rgba(14, 165, 233, 0.14) 0 2px, transparent 3px),
		radial-gradient(circle at 62% 70%, rgba(99, 102, 241, 0.12) 0 2px, transparent 3px);
	opacity: 0.6;
}

.login-shell {
	position: relative;
	z-index: 1;
	min-height: 100vh;
	display: flex;
	align-items: center;
	justify-content: center;
	max-width: 1160px;
	margin: 0 auto;
	padding: clamp(24px, 5vw, 48px);
	gap: clamp(28px, 5vw, 64px);
}

.login-brand {
	flex: 1;
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: flex-start;
	max-width: 480px;
	padding-top: 1rem;
}

.login-brand__hero {
	font-size: clamp(2.5rem, 6.5vw, 3.75rem);
	font-weight: 700;
	line-height: 1.15;
	letter-spacing: 0.08em;
	margin: 0;
	color: #0f172a;
	background: none;
	-webkit-text-fill-color: #0f172a;
	text-shadow: none;
	margin-bottom: 0.75rem;
}

.login-panel {
	flex: 0 1 430px;
	display: flex;
	align-items: center;
	justify-content: center;
}

.login-panel__inner {
	width: 100%;
	padding: clamp(28px, 5vw, 40px);
	border-radius: 16px;
	background: rgba(255, 255, 255, 0.88);
	border: 1px solid rgba(148, 163, 184, 0.35);
	box-shadow:
		0 14px 36px rgba(15, 23, 42, 0.14);
	backdrop-filter: blur(6px);
	-webkit-backdrop-filter: blur(6px);
}

.login-panel__head {
	margin-bottom: 1.75rem;
}

.login-panel__h {
	font-size: 1.25rem;
	font-weight: 600;
	color: #0f172a;
	margin-bottom: 0.35rem;
}

.login-panel__sub {
	font-size: 0.8125rem;
	color: #64748b;
	letter-spacing: 0.04em;
	text-transform: uppercase;
}

.login-form__group {
	margin-bottom: 1.25rem;
}

.login-form__label {
	display: block;
	font-size: 0.8125rem;
	font-weight: 500;
	color: #475569;
	margin-bottom: 0.5rem;
}

.login-form__field {
	display: flex;
	align-items: center;
	gap: 0.65rem;
	padding: 0 14px;
	height: 46px;
	border-radius: 8px;
	background: #ffffff;
	border: 1px solid #d8e0ea;
	transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-form__field:focus-within {
	border-color: #60a5fa;
	box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.14);
}

.login-form__icon {
	flex-shrink: 0;
	color: #64748b;
	display: flex;
	align-items: center;
	justify-content: center;
}

.login-form__field:focus-within .login-form__icon {
	color: #2563eb;
}

.login-form__input {
	flex: 1;
	min-width: 0;
	height: 100%;
	border: none;
	background: transparent;
	font-size: 0.9375rem;
	color: #0f172a;
	outline: none;
}

.login-form__input::placeholder {
	color: #94a3b8;
}

.login-form__submit {
	width: 100%;
	height: 46px;
	margin-top: 0.5rem;
	border: none;
	border-radius: 8px;
	font-size: 0.9375rem;
	font-weight: 600;
	letter-spacing: 0.12em;
	color: #ffffff;
	cursor: pointer;
	background: linear-gradient(135deg, #3b82f6 0%, #2563eb 55%, #1d4ed8 100%);
	box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
	transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.login-form__submit:hover {
	filter: brightness(1.05);
	box-shadow: 0 10px 28px rgba(37, 99, 235, 0.32);
}

.login-form__submit:active {
	transform: translateY(1px);
}

@keyframes gridShift {
	0% { background-position: 0 0, 0 0; }
	100% { background-position: 56px 56px, 0 0; }
}

@keyframes scanLine {
	0% { transform: translateY(-100%); opacity: 0; }
	8% { opacity: 1; }
	92% { opacity: 1; }
	100% { transform: translateY(100%); opacity: 0; }
}

@keyframes bgFloat {
	0% { transform: scale(1) translate(0, 0); }
	100% { transform: scale(1.03) translate(-1%, 1%); }
}

.login-panel__foot {
	margin-top: 1.5rem;
	padding-top: 1.25rem;
	border-top: 1px solid #e5eaf1;
	font-size: 0.75rem;
	color: #64748b;
	text-align: center;
}

@media (max-width: 880px) {
	.login-shell {
		flex-direction: column;
		align-items: center;
		padding-top: 32px;
	}

	.login-brand {
		max-width: 100%;
		text-align: center;
		align-items: center;
		padding-top: 0;
	}

	.login-brand__hero {
		letter-spacing: 0.12em;
	}

	.login-panel {
		flex: 1;
		width: 100%;
		max-width: 400px;
	}
}

@media (max-width: 400px) {
	.login-panel__inner {
		padding: 24px 20px;
	}
}