*,
*::before,
*::after {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

:root {
	--ink: #1a1814;
	--ink-2: #4a4540;
	--ink-3: #9a9088;
	--paper: #faf8f4;
	--paper-2: #f3ede3;
	--paper-3: #e8e0d0;
	--accent: #c4692a;
	--accent-2: #a3541f;
	--blue: #2455a0;
	--green: #2a6e3e;
	--red: #b02b2b;
	--border: rgba(26, 24, 20, 0.10);
	--border-2: rgba(26, 24, 20, 0.20);
	--radius: 8px;
	--shadow-sm: 0 1px 4px rgba(26, 24, 20, 0.07);
	--shadow-md: 0 4px 20px rgba(26, 24, 20, 0.09), 0 1px 4px rgba(26, 24, 20, 0.06);
	--shadow-lg: 0 12px 40px rgba(26, 24, 20, 0.13), 0 2px 8px rgba(26, 24, 20, 0.08);
}

@media (prefers-color-scheme: dark) {
	:root {
		--ink: #f0ece4;
		--ink-2: #c0b8b0;
		--ink-3: #706860;
		--paper: #1c1a16;
		--paper-2: #242018;
		--paper-3: #2e2a22;
		--accent: #e07838;
		--accent-2: #c45f20;
		--blue: #6090d8;
		--green: #5aad7e;
		--red: #e05050;
		--border: rgba(240, 236, 228, 0.09);
		--border-2: rgba(240, 236, 228, 0.17);
	}
}

html {
	height: 100%;
}

body {
	font-family: 'Source Serif 4', Georgia, serif;
	background: var(--paper);
	color: var(--ink);
	min-height: 100vh;
	display: flex;
	flex-direction: column;
	font-size: 16px;
	line-height: 1.6;
	position: relative;
	overflow-x: hidden;
}

/* ── Decorative background grid ── */
body::before {
	content: '';
	position: fixed;
	inset: 0;
	background-image:
		linear-gradient(var(--border) 1px, transparent 1px),
		linear-gradient(90deg, var(--border) 1px, transparent 1px);
	background-size: 48px 48px;
	pointer-events: none;
	z-index: 0;
	opacity: 0.5;
}

/* ── Warm accent blob ── */
body::after {
	content: '';
	position: fixed;
	top: -180px;
	right: -180px;
	width: 560px;
	height: 560px;
	border-radius: 50%;
	background: radial-gradient(circle, rgba(196, 105, 42, 0.08) 0%, transparent 70%);
	pointer-events: none;
	z-index: 0;
}

/* ── Page layout ── */
.page {
	flex: 1;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: 48px 24px;
	position: relative;
	z-index: 1;
}

/* ── Masthead ── */
.masthead {
	text-align: center;
	margin-bottom: 40px;
}

.logo-lockup {
	display: inline-flex;
	align-items: baseline;
	gap: 10px;
	margin-bottom: 10px;
}

.logo-title {
	font-family: 'Playfair Display', serif;
	font-size: 36px;
	font-weight: 700;
	letter-spacing: -0.6px;
	color: var(--ink);
}

.logo-badge {
	font-size: 10px;
	background: var(--accent);
	color: #fff;
	padding: 3px 10px;
	border-radius: 2px;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	font-weight: 600;
	vertical-align: middle;
	position: relative;
	top: -2px;
}

.masthead-sub {
	font-size: 14px;
	color: var(--ink-3);
	letter-spacing: 0.04em;
	font-style: italic;
}

/* ── Card ── */
.card {
	width: 100%;
	max-width: 420px;
	background: var(--paper-2);
	border: 1px solid var(--border);
	border-radius: 12px;
	box-shadow: var(--shadow-lg);
	overflow: hidden;
}

/* ── Tab switcher ── */
.tab-row {
	display: flex;
	border-bottom: 1px solid var(--border);
	background: var(--paper-3);
}

.tab-btn {
	flex: 1;
	padding: 14px 16px;
	background: transparent;
	border: none;
	border-bottom: 2px solid transparent;
	cursor: pointer;
	font-family: 'Source Serif 4', serif;
	font-size: 13px;
	color: var(--ink-3);
	letter-spacing: 0.03em;
	transition: color 0.14s, border-color 0.14s, background 0.14s;
	margin-bottom: -1px;
}

.tab-btn:hover {
	color: var(--ink);
	background: var(--paper-2);
}

.tab-btn.active {
	color: var(--ink);
	font-weight: 600;
	border-bottom-color: var(--accent);
	background: var(--paper-2);
}

/* ── Form panels ── */
.panel {
	display: none;
	padding: 32px 32px 28px;
}

.panel.active {
	display: block;
}

/* ── Form fields ── */
.field {
	margin-bottom: 20px;
}

.field:last-of-type {
	margin-bottom: 0;
}

label {
	display: block;
	font-size: 11px;
	text-transform: uppercase;
	letter-spacing: 0.09em;
	color: var(--ink-3);
	font-weight: 400;
	margin-bottom: 7px;
}

input[type="email"],
input[type="password"],
input[type="text"] {
	display: block;
	width: 100%;
	padding: 11px 14px;
	background: var(--paper);
	border: 1px solid var(--border-2);
	border-radius: var(--radius);
	font-family: 'Source Serif 4', serif;
	font-size: 15px;
	color: var(--ink);
	outline: none;
	transition: border-color 0.14s, box-shadow 0.14s;
	-webkit-appearance: none;
	appearance: none;
}

input:hover {
	border-color: var(--ink-3);
}

input:focus {
	border-color: var(--accent);
	box-shadow: 0 0 0 3px rgba(196, 105, 42, 0.12);
}

input::placeholder {
	color: var(--ink-3);
	opacity: 0.6;
}

/* ── Submit button ── */
.btn-primary {
	display: block;
	width: 100%;
	margin-top: 24px;
	padding: 13px 20px;
	background: var(--accent);
	color: #fff;
	border: none;
	border-radius: var(--radius);
	cursor: pointer;
	font-family: 'Source Serif 4', serif;
	font-size: 15px;
	font-weight: 600;
	letter-spacing: 0.02em;
	transition: background 0.14s, transform 0.1s, box-shadow 0.14s;
	box-shadow: 0 2px 8px rgba(196, 105, 42, 0.25);
}

.btn-primary:hover {
	background: var(--accent-2);
	transform: translateY(-1px);
	box-shadow: 0 4px 14px rgba(196, 105, 42, 0.3);
}

.btn-primary:active {
	transform: translateY(0);
	box-shadow: 0 1px 4px rgba(196, 105, 42, 0.2);
}

.btn-primary:disabled {
	opacity: 0.55;
	cursor: not-allowed;
	transform: none;
}

/* ── Error / success messages ── */
.alert {
	display: none;
	margin-top: 18px;
	padding: 10px 14px;
	border-radius: 6px;
	font-size: 13.5px;
	line-height: 1.5;
}

.alert.visible {
	display: block;
}

.alert-error {
	background: rgba(176, 43, 43, 0.08);
	border: 1px solid rgba(176, 43, 43, 0.2);
	color: var(--red);
}

.alert-success {
	background: rgba(42, 110, 62, 0.08);
	border: 1px solid rgba(42, 110, 62, 0.2);
	color: var(--green);
}

@media (prefers-color-scheme: dark) {
	.alert-error {
		background: rgba(224, 80, 80, 0.10);
		border-color: rgba(224, 80, 80, 0.22);
	}

	.alert-success {
		background: rgba(90, 173, 126, 0.10);
		border-color: rgba(90, 173, 126, 0.22);
	}
}

/* ── Divider ── */
.divider {
	display: flex;
	align-items: center;
	gap: 12px;
	margin: 20px 0 0;
	color: var(--ink-3);
	font-size: 11px;
	letter-spacing: 0.06em;
	text-transform: uppercase;
}

.divider::before,
.divider::after {
	content: '';
	flex: 1;
	height: 1px;
	background: var(--border-2);
}

/* ── Password hint ── */
.password-hint {
	margin-top: 5px;
	font-size: 11px;
	color: var(--ink-3);
	font-style: italic;
}

/* ── Spinner ── */
.spinner {
	display: none;
	width: 16px;
	height: 16px;
	border: 2px solid rgba(255, 255, 255, 0.35);
	border-top-color: #fff;
	border-radius: 50%;
	animation: spin 0.65s linear infinite;
	vertical-align: middle;
	margin-left: 8px;
}

.btn-primary.loading .spinner {
	display: inline-block;
}

@keyframes spin {
	to {
		transform: rotate(360deg);
	}
}

/* ── Footer ── */
footer {
	position: relative;
	z-index: 1;
	text-align: center;
	padding: 20px 24px 32px;
	font-size: 11.5px;
	color: var(--ink-3);
	letter-spacing: 0.03em;
	line-height: 1.8;
}

/* ── Fade in ── */
@keyframes fadeUp {
	from {
		opacity: 0;
		transform: translateY(14px);
	}

	to {
		opacity: 1;
		transform: translateY(0);
	}
}

.masthead {
	animation: fadeUp 0.4s ease both;
}

.card {
	animation: fadeUp 0.4s 0.08s ease both;
}