/* =========================================================================
   SaaS User Access — Premium Auth UI
   Design system: Stripe/Linear/Notion-inspired, mobile-first, fintech-trust
   ========================================================================= */

:root {
	--sua-font: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

	--sua-accent: #5b5bf6;
	--sua-accent-hover: #4a49e0;
	--sua-accent-active: #3e3dcc;
	--sua-accent-soft: #f0f0fe;
	--sua-accent-ring: rgba(91, 91, 246, 0.16);

	--sua-ink-900: #14152b;
	--sua-ink-700: #33344d;
	--sua-ink-500: #6b6c85;
	--sua-ink-300: #9799ad;
	--sua-ink-100: #e4e5ee;
	--sua-ink-50: #f6f6fb;

	--sua-surface: #ffffff;
	--sua-bg: #f4f5fa;
	--sua-border: #e4e5ee;

	--sua-success: #17845a;
	--sua-success-soft: #ecfaf3;
	--sua-error: #d0392b;
	--sua-error-soft: #fdefed;

	--sua-radius-lg: 18px;
	--sua-radius-md: 12px;
	--sua-radius-sm: 8px;

	--sua-shadow-card: 0 1px 2px rgba(20, 21, 43, 0.04), 0 16px 40px -12px rgba(20, 21, 43, 0.14);
	--sua-shadow-btn: 0 1px 2px rgba(20, 21, 43, 0.06);
}

/* ---------------------------------------------------------
   Base
   --------------------------------------------------------- */
.sua-form-wrap,
.sua-dashboard,
.sua-notice {
	font-family: var(--sua-font);
	-webkit-font-smoothing: antialiased;
}

.sua-form-wrap {
	max-width: 400px;
	margin: 0 auto;
	width: 100%;
}

.sua-form {
	position: relative;
	background: var(--sua-surface);
	border: 1px solid var(--sua-border);
	border-radius: var(--sua-radius-lg);
	padding: 32px 28px;
	box-shadow: var(--sua-shadow-card);
	animation: sua-rise 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes sua-rise {
	from { opacity: 0; transform: translateY(10px); }
	to   { opacity: 1; transform: translateY(0); }
}

.sua-form + .sua-form {
	margin-top: 0;
}

.sua-form-icon {
	width: 44px;
	height: 44px;
	border-radius: 12px;
	background: var(--sua-accent-soft);
	color: var(--sua-accent);
	display: flex;
	align-items: center;
	justify-content: center;
	margin-bottom: 16px;
}

.sua-form h3 {
	margin: 0 0 4px;
	font-size: 1.32em;
	font-weight: 700;
	letter-spacing: -0.01em;
	color: var(--sua-ink-900);
	line-height: 1.3;
}

.sua-form-subtitle {
	margin: 0 0 22px;
	font-size: 0.92em;
	color: var(--sua-ink-500);
	line-height: 1.5;
}

.sua-form-otp p:not(.sua-form-subtitle) {
	font-size: 0.9em;
	color: var(--sua-ink-500);
	line-height: 1.5;
	margin: 0 0 20px;
}

/* ---------------------------------------------------------
   Fields
   --------------------------------------------------------- */
.sua-field {
	margin-bottom: 16px;
}

.sua-field label {
	display: block;
	font-weight: 600;
	margin-bottom: 6px;
	font-size: 0.86em;
	color: var(--sua-ink-700);
	letter-spacing: 0.01em;
}

.sua-field input[type="text"],
.sua-field input[type="email"],
.sua-field input[type="password"] {
	width: 100%;
	padding: 12px 14px;
	border: 1.5px solid var(--sua-border);
	border-radius: var(--sua-radius-sm);
	font-size: 0.98em;
	font-family: inherit;
	color: var(--sua-ink-900);
	background: var(--sua-surface);
	box-sizing: border-box;
	transition: border-color 0.15s ease, box-shadow 0.15s ease, background-color 0.15s ease;
}

.sua-field input::placeholder {
	color: var(--sua-ink-300);
}

.sua-field input:hover {
	border-color: var(--sua-ink-300);
}

.sua-field input:focus {
	outline: none;
	border-color: var(--sua-accent);
	box-shadow: 0 0 0 4px var(--sua-accent-ring);
}

.sua-field input:disabled {
	background: var(--sua-ink-50);
	color: var(--sua-ink-300);
}

/* Inline validity feedback (progressive enhancement; safe no-op if JS never adds these) */
.sua-field input.sua-input-invalid {
	border-color: var(--sua-error);
}

.sua-field input.sua-input-invalid:focus {
	box-shadow: 0 0 0 4px rgba(208, 57, 43, 0.12);
}

.sua-field input.sua-input-valid {
	border-color: var(--sua-success);
}

/* ---------------------------------------------------------
   OTP / verification code input
   --------------------------------------------------------- */
.sua-otp-input {
	text-align: center;
	font-size: 1.5em !important;
	font-weight: 700;
	letter-spacing: 0.5em;
	padding-left: 18px !important;
	padding-right: 14px !important;
	font-variant-numeric: tabular-nums;
}

.sua-otp-input::placeholder {
	letter-spacing: normal;
	font-weight: 400;
	font-size: 0.6em;
}

/* ---------------------------------------------------------
   Password strength meter
   --------------------------------------------------------- */
.sua-strength-meter {
	margin-top: 8px;
	display: flex;
	align-items: center;
	gap: 10px;
}

.sua-strength-bars {
	display: flex;
	gap: 4px;
	flex: 1;
}

.sua-strength-bar {
	height: 4px;
	flex: 1;
	border-radius: 2px;
	background: var(--sua-ink-100);
	transition: background-color 0.25s ease;
}

.sua-strength-label {
	font-size: 0.78em;
	font-weight: 600;
	color: var(--sua-ink-300);
	min-width: 44px;
	text-align: right;
	transition: color 0.25s ease;
}

.sua-strength-meter[data-level="1"] .sua-strength-bar:nth-child(-n+1) { background: var(--sua-error); }
.sua-strength-meter[data-level="1"] .sua-strength-label { color: var(--sua-error); }

.sua-strength-meter[data-level="2"] .sua-strength-bar:nth-child(-n+2) { background: #e08a1f; }
.sua-strength-meter[data-level="2"] .sua-strength-label { color: #e08a1f; }

.sua-strength-meter[data-level="3"] .sua-strength-bar:nth-child(-n+3) { background: #c7ae1a; }
.sua-strength-meter[data-level="3"] .sua-strength-label { color: #a4900e; }

.sua-strength-meter[data-level="4"] .sua-strength-bar { background: var(--sua-success); }
.sua-strength-meter[data-level="4"] .sua-strength-label { color: var(--sua-success); }

/* ---------------------------------------------------------
   Checkbox / consent
   --------------------------------------------------------- */
.sua-checkbox label {
	font-weight: 400;
	display: flex;
	align-items: center;
	gap: 8px;
	color: var(--sua-ink-700);
	font-size: 0.92em;
}

.sua-checkbox input[type="checkbox"],
.sua-consent-field input[type="checkbox"] {
	appearance: none;
	-webkit-appearance: none;
	width: 18px;
	height: 18px;
	margin: 0;
	border: 1.5px solid var(--sua-ink-300);
	border-radius: 5px;
	background-color: var(--sua-surface);
	cursor: pointer;
	position: relative;
	flex-shrink: 0;
	transition: background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.sua-checkbox input[type="checkbox"]:hover,
.sua-consent-field input[type="checkbox"]:hover {
	border-color: var(--sua-accent);
}

.sua-checkbox input[type="checkbox"]:focus-visible,
.sua-consent-field input[type="checkbox"]:focus-visible {
	outline: 2px solid var(--sua-accent-ring);
	outline-offset: 2px;
}

.sua-checkbox input[type="checkbox"]:checked,
.sua-consent-field input[type="checkbox"]:checked {
	background-color: var(--sua-accent);
	border-color: var(--sua-accent);
}

.sua-checkbox input[type="checkbox"]:checked::after,
.sua-consent-field input[type="checkbox"]:checked::after {
	content: "";
	position: absolute;
	left: 5px;
	top: 1px;
	width: 5px;
	height: 9px;
	border: solid #fff;
	border-width: 0 2px 2px 0;
	transform: rotate(45deg);
}

.sua-hint {
	font-size: 0.8em;
	color: var(--sua-ink-500);
	margin: 6px 0 0;
	line-height: 1.4;
}

/* ---------------------------------------------------------
   Buttons
   --------------------------------------------------------- */
.sua-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 12px 20px;
	border-radius: var(--sua-radius-sm);
	border: none;
	font-size: 0.98em;
	cursor: pointer;
	font-weight: 600;
	font-family: inherit;
	transition: background-color 0.15s ease, transform 0.1s ease, box-shadow 0.15s ease, opacity 0.15s ease;
}

.sua-btn-primary {
	background: var(--sua-accent);
	color: #fff;
	width: 100%;
	box-shadow: var(--sua-shadow-btn);
	position: relative;
}

.sua-btn-primary:hover {
	background: var(--sua-accent-hover);
	transform: translateY(-1px);
	box-shadow: 0 4px 12px rgba(91, 91, 246, 0.28);
}

.sua-btn-primary:active {
	background: var(--sua-accent-active);
	transform: translateY(0);
}

.sua-btn-primary:focus-visible {
	outline: none;
	box-shadow: 0 0 0 4px var(--sua-accent-ring);
}

.sua-btn-primary:disabled {
	opacity: 0.65;
	cursor: not-allowed;
	transform: none;
}

.sua-btn-link {
	background: transparent;
	color: var(--sua-accent);
	width: 100%;
	margin-top: 8px;
	text-decoration: none;
	font-weight: 600;
	padding: 10px 20px;
}

.sua-btn-link:hover {
	background: var(--sua-accent-soft);
	border-radius: var(--sua-radius-sm);
}

/* Loading state: hide label, show spinner, driven purely by the existing
   .sua-loading class already toggled by script.js — no JS changes required. */
.sua-form.sua-loading {
	pointer-events: none;
}

.sua-form.sua-loading .sua-btn-primary {
	color: transparent;
}

.sua-form.sua-loading .sua-btn-primary::after {
	content: "";
	position: absolute;
	width: 18px;
	height: 18px;
	top: 50%;
	left: 50%;
	margin: -9px 0 0 -9px;
	border-radius: 50%;
	border: 2.5px solid rgba(255, 255, 255, 0.4);
	border-top-color: #fff;
	animation: sua-spin 0.7s linear infinite;
}

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

/* ---------------------------------------------------------
   Messages (inline success / error)
   --------------------------------------------------------- */
.sua-message {
	min-height: 0;
	font-size: 0.88em;
	font-weight: 500;
	line-height: 1.4;
}

.sua-message:empty {
	margin: 0;
}

.sua-message.sua-success,
.sua-message.sua-error {
	margin: -4px 0 16px;
	padding: 10px 12px;
	border-radius: var(--sua-radius-sm);
	display: flex;
	align-items: flex-start;
	gap: 8px;
	animation: sua-msg-in 0.2s ease;
}

@keyframes sua-msg-in {
	from { opacity: 0; transform: translateY(-4px); }
	to   { opacity: 1; transform: translateY(0); }
}

.sua-message.sua-success {
	color: var(--sua-success);
	background: var(--sua-success-soft);
}

.sua-message.sua-error {
	color: var(--sua-error);
	background: var(--sua-error-soft);
	animation: sua-shake 0.36s ease;
}

@keyframes sua-shake {
	10%, 90% { transform: translateX(-1px); }
	20%, 80% { transform: translateX(2px); }
	30%, 50%, 70% { transform: translateX(-3px); }
	40%, 60% { transform: translateX(3px); }
}

/* ---------------------------------------------------------
   Trust indicators
   --------------------------------------------------------- */
.sua-trust-row {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 6px;
	margin: 14px 0 0;
	font-size: 0.78em;
	color: var(--sua-ink-300);
	text-align: center;
}

.sua-trust-row svg {
	flex-shrink: 0;
	opacity: 0.8;
}

/* ---------------------------------------------------------
   Notices / empty states
   --------------------------------------------------------- */
.sua-notice {
	max-width: 400px;
	margin: 0 auto;
	padding: 16px 18px;
	background: var(--sua-surface);
	border: 1px solid var(--sua-border);
	border-radius: var(--sua-radius-md);
	box-shadow: var(--sua-shadow-card);
	display: flex;
	align-items: flex-start;
	gap: 12px;
}

.sua-notice p {
	margin: 0;
	font-size: 0.94em;
	color: var(--sua-ink-700);
	line-height: 1.5;
}

.sua-notice a {
	color: var(--sua-accent);
	font-weight: 600;
	text-decoration: none;
}

.sua-notice a:hover {
	text-decoration: underline;
}

.sua-notice-icon {
	flex-shrink: 0;
	width: 26px;
	height: 26px;
	border-radius: 50%;
	background: var(--sua-accent-soft);
	color: var(--sua-accent);
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 0.8em;
}

/* ---------------------------------------------------------
   Captcha
   --------------------------------------------------------- */
.sua-captcha-field {
	display: flex;
	justify-content: center;
	margin-top: 4px;
}

/* ---------------------------------------------------------
   Misc structural
   --------------------------------------------------------- */
hr {
	border: none;
	border-top: 1px solid var(--sua-border);
	margin: 22px 0;
}

.sua-switch-link {
	text-align: center;
	margin: 18px 0 0;
	font-size: 0.9em;
	color: var(--sua-ink-500);
}

.sua-switch-link a {
	color: var(--sua-accent);
	text-decoration: none;
	font-weight: 600;
}

.sua-switch-link a:hover {
	text-decoration: underline;
}

.sua-checkbox {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 8px;
}

.sua-forgot-link {
	font-size: 0.86em;
	color: var(--sua-accent);
	text-decoration: none;
	font-weight: 600;
}

.sua-forgot-link:hover {
	text-decoration: underline;
}

/* ---------------------------------------------------------
   Distraction-free app shell (Register / Login / Forgot / Dashboard)
   --------------------------------------------------------- */
html body.sua-app-shell {
	background:
		radial-gradient(560px circle at 12% -6%, var(--sua-accent-soft), transparent 60%),
		radial-gradient(560px circle at 108% 10%, #eef2ff, transparent 55%),
		var(--sua-bg);
	margin: 0;
	min-height: 100vh;
	font-family: var(--sua-font);
}

.sua-app-shell-wrap {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
}

.sua-app-shell-header {
	padding: 22px 24px;
}

.sua-app-shell-brand {
	font-size: 1.15em;
	font-weight: 800;
	letter-spacing: -0.01em;
	color: var(--sua-ink-900);
	text-decoration: none;
}

.sua-app-shell-main {
	flex: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 16px 16px 48px;
}

.sua-app-shell-footer {
	text-align: center;
	font-size: 0.78em;
	color: var(--sua-ink-300);
	padding: 18px;
}

/* ---------------------------------------------------------
   Dashboard
   --------------------------------------------------------- */
.sua-dashboard {
	width: 100%;
	max-width: 720px;
	margin: 0 auto;
}

.sua-dashboard-nav {
	display: flex;
	align-items: center;
	justify-content: space-between;
	background: var(--sua-surface);
	border: 1px solid var(--sua-border);
	border-radius: var(--sua-radius-md);
	padding: 16px 22px;
	margin-bottom: 20px;
	box-shadow: var(--sua-shadow-card);
}

.sua-dashboard-welcome {
	font-size: 1.02em;
	color: var(--sua-ink-700);
}

.sua-dashboard-welcome strong {
	color: var(--sua-ink-900);
}

.sua-logout-link {
	width: auto;
	margin: 0;
	text-decoration: none;
}

.sua-dashboard-grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 20px;
	align-items: start;
}

.sua-dashboard-grid-full .sua-card-profile {
	width: 100%;
}

.sua-card {
	background: var(--sua-surface);
	border: 1px solid var(--sua-border);
	border-radius: var(--sua-radius-lg);
	padding: 24px;
	box-shadow: var(--sua-shadow-card);
}

.sua-card h3 {
	margin-top: 0;
	font-size: 1.1em;
	font-weight: 700;
	color: var(--sua-ink-900);
}

.sua-badge {
	display: inline-block;
	padding: 4px 10px;
	border-radius: 999px;
	font-size: 0.74em;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.04em;
}

.sua-badge-muted {
	background: var(--sua-ink-50);
	color: var(--sua-ink-500);
}

.sua-card-profile .sua-form {
	border: none;
	padding: 0;
	box-shadow: none;
	animation: none;
}

/* ---------------------------------------------------------
   Password show/hide toggle
   --------------------------------------------------------- */
.sua-password-wrap {
	position: relative;
}

.sua-password-wrap input[type="password"],
.sua-password-wrap input[type="text"] {
	padding-right: 44px;
}

.sua-password-toggle {
	position: absolute;
	top: 50%;
	right: 6px;
	transform: translateY(-50%);
	background: none;
	border: none;
	padding: 7px;
	margin: 0;
	line-height: 0;
	color: var(--sua-ink-300);
	cursor: pointer;
	border-radius: 6px;
	transition: color 0.15s ease, background-color 0.15s ease;
}

.sua-password-toggle:hover {
	color: var(--sua-accent);
	background: var(--sua-accent-soft);
}

.sua-password-toggle:focus-visible {
	outline: 2px solid var(--sua-accent);
	outline-offset: 1px;
}

.sua-eye-icon {
	display: block;
}

/* Only the "open eye" icon shows until the toggle is clicked; the JS then
   toggles which one is visible to reflect the current show/hide state. */
.sua-password-toggle .sua-eye-closed {
	display: none;
}

/* ---------------------------------------------------------
   Consent checkbox
   --------------------------------------------------------- */
.sua-consent-field label {
	display: flex;
	align-items: flex-start;
	gap: 8px;
	font-weight: 400;
	font-size: 0.88em;
	line-height: 1.45;
	color: var(--sua-ink-500);
}

.sua-consent-field input[type="checkbox"] {
	margin-top: 2px;
	flex-shrink: 0;
}

.sua-consent-field a {
	color: var(--sua-ink-700);
	text-decoration: underline;
	font-weight: 600;
}

/* ---------------------------------------------------------
   Mobile-first refinements
   --------------------------------------------------------- */
@media (max-width: 480px) {
	.sua-app-shell-main {
		padding: 8px 12px 32px;
		align-items: flex-start;
	}

	.sua-form-wrap {
		max-width: 100%;
	}

	.sua-form {
		padding: 26px 20px;
		border-radius: 16px;
	}

	.sua-app-shell-header {
		padding: 16px 18px;
	}
}

/* Respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
	.sua-form,
	.sua-message.sua-success,
	.sua-message.sua-error,
	.sua-btn-primary {
		animation: none !important;
		transition: none !important;
	}
}