/**
 * Auth Base Styles
 *
 * Design tokens, shared element styles, and page layout for
 * authentication pages. Complements FluentCommunity's color system.
 *
 * @package EduHub
 * @since 1.0.0
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* Auth page reset — neutralize browser defaults and WordPress interference */
.eduhub-auth-page,
.eduhub-auth-page *,
.eduhub-auth-page *::before,
.eduhub-auth-page *::after {
	box-sizing: border-box;
}

html:has(.eduhub-auth-page) {
	margin: 0;
	padding: 0;
	height: 100%;
}

html:has(.eduhub-auth-page) body {
	margin: 0;
	padding: 0;
	min-height: 100%;
}

/* ==========================================================================
   Design Tokens
   ========================================================================== */

:root {
	/* Body & Surface */
	--eduhub-bg-body: #F4F1ED;
	--eduhub-bg-surface: #FFFFFF;
	--eduhub-bg-surface-secondary: #F0EEEA;

	/* Text */
	--eduhub-text-primary: #1D2B26;
	--eduhub-text-secondary: #6B7F78;

	/* Primary / Accent */
	--eduhub-primary: #398168;
	--eduhub-primary-hover: #2A6B52;
	--eduhub-primary-light: #E6F2EC;

	/* Borders */
	--eduhub-border: #E8E6E2;

	/* Sidebar (dark green accent) */
	--eduhub-sidebar-bg: #19392E;
	--eduhub-sidebar-text: #D1DDD8;

	/* Form states */
	--eduhub-error: #DC2626;
	--eduhub-error-light: #FEF2F2;
	--eduhub-success: #16A34A;
	--eduhub-success-light: #F0FDF4;
	--eduhub-warning: #D97706;

	/* Font */
	--eduhub-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

	/* Radius */
	--eduhub-radius-sm: 4px;
	--eduhub-radius-md: 8px;
	--eduhub-radius-lg: 12px;
	--eduhub-radius-xl: 12px;
	--eduhub-radius-full: 9999px;

	/* Spacing */
	--eduhub-spacing-1: 0.25rem;
	--eduhub-spacing-2: 0.5rem;
	--eduhub-spacing-3: 0.75rem;
	--eduhub-spacing-4: 1rem;
	--eduhub-spacing-5: 1.25rem;
	--eduhub-spacing-6: 1.5rem;
	--eduhub-spacing-8: 2rem;
	--eduhub-spacing-10: 2.5rem;
	--eduhub-spacing-12: 3rem;

	/* Transitions */
	--eduhub-transition-fast: 150ms;
	--eduhub-transition-base: 200ms;
	--eduhub-transition-slow: 300ms;
	--eduhub-ease-out: cubic-bezier(0.33, 1, 0.68, 1);
	--eduhub-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

	/* Shadows */
	--eduhub-shadow-card: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
	--eduhub-shadow-card-hover: 0 4px 6px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.06);

	/* Input heights */
	--eduhub-input-height: 2.5rem;
	--eduhub-input-height-sm: 2rem;
	--eduhub-input-height-lg: 2.75rem;

	/* Button heights */
	--eduhub-btn-height: 2.375rem;
	--eduhub-btn-height-sm: 1.875rem;
	--eduhub-btn-height-lg: 2.75rem;

	/* Form field gap */
	--eduhub-field-gap: 1rem;
	--eduhub-label-gap: 0.375rem;
}

/* ==========================================================================
   Alpine.js Cloak
   ========================================================================== */

[x-cloak] {
	display: none !important;
}

/* ==========================================================================
   Input Styles (.eduhub-input)
   ========================================================================== */

.eduhub-input {
	width: 100%;
	min-height: var(--eduhub-input-height);
	padding: var(--eduhub-spacing-2) var(--eduhub-spacing-3);
	font-family: var(--eduhub-font-family);
	font-size: 0.875rem;
	color: var(--eduhub-text-primary);
	background: var(--eduhub-bg-surface);
	border: 1px solid var(--eduhub-border);
	border-radius: var(--eduhub-radius-md);
	outline: none;
	transition:
		border-color var(--eduhub-transition-base) var(--eduhub-ease-out),
		box-shadow var(--eduhub-transition-base) var(--eduhub-ease-out),
		background-color var(--eduhub-transition-base) var(--eduhub-ease-out);
}

/* Icon accommodation */
.eduhub-input--has-icon {
	padding-left: var(--eduhub-spacing-8);
}

.eduhub-input--has-action {
	padding-right: var(--eduhub-spacing-8);
}

/* Interactive states */
.eduhub-input:hover:not(:focus):not(:disabled) {
	border-color: var(--eduhub-primary);
}

.eduhub-input:focus {
	border-color: var(--eduhub-primary);
	box-shadow: 0 0 0 3px rgba(57, 129, 104, 0.15);
	background: var(--eduhub-bg-surface);
}

.eduhub-input--filled {
	background: var(--eduhub-bg-surface);
	border-color: var(--eduhub-border);
}

/* Validation states */
.eduhub-input--error {
	border-color: var(--eduhub-error);
	background: var(--eduhub-error-light);
}

.eduhub-input--error:focus {
	box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

.eduhub-input--success {
	border-color: var(--eduhub-success);
	background: var(--eduhub-success-light);
}

.eduhub-input--success:focus {
	box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.15);
}

/* Disabled state */
.eduhub-input:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

/* Placeholder styling */
.eduhub-input::placeholder {
	color: var(--eduhub-text-secondary);
	opacity: 0.7;
}

/* ==========================================================================
   Field Structure (.eduhub-field)
   ========================================================================== */

.eduhub-field {
	display: flex;
	flex-direction: column;
	gap: var(--eduhub-label-gap);
}

.eduhub-field--error .eduhub-field__label {
	color: var(--eduhub-error);
}

/* Field Label */
.eduhub-field__label {
	display: flex;
	align-items: center;
	gap: var(--eduhub-spacing-1);
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--eduhub-text-primary);
}

.eduhub-field__required {
	color: var(--eduhub-primary);
}

/* Input Wrapper */
.eduhub-field__input-wrapper {
	position: relative;
}

/* Field Icon */
.eduhub-field__icon {
	position: absolute;
	left: var(--eduhub-spacing-3);
	top: 50%;
	transform: translateY(-50%);
	width: 18px;
	height: 18px;
	color: var(--eduhub-text-secondary);
	pointer-events: none;
	transition: color var(--eduhub-transition-base) var(--eduhub-ease-out);
	display: flex;
	align-items: center;
	justify-content: center;
}

.eduhub-field__icon svg {
	width: 100%;
	height: 100%;
}

/* Icon color on input focus */
.eduhub-input:focus ~ .eduhub-field__icon {
	color: var(--eduhub-primary);
}

/* Icon color on input states */
.eduhub-input--error ~ .eduhub-field__icon {
	color: var(--eduhub-error);
}

.eduhub-input--success ~ .eduhub-field__icon {
	color: var(--eduhub-success);
}

/* Status Indicators */
.eduhub-field__status {
	position: absolute;
	right: var(--eduhub-spacing-3);
	top: 50%;
	transform: translateY(-50%);
	width: 18px;
	height: 18px;
	border-radius: var(--eduhub-radius-full);
	display: flex;
	align-items: center;
	justify-content: center;
	animation: eduhub-status-pop var(--eduhub-transition-fast) var(--eduhub-ease-spring);
}

.eduhub-field__status svg {
	width: 12px;
	height: 12px;
}

.eduhub-field__status--success {
	background: var(--eduhub-success);
	color: white;
}

.eduhub-field__status--error {
	background: var(--eduhub-error);
	color: white;
}

/* Field Messages */
.eduhub-field__error {
	font-size: 0.8125rem;
	color: var(--eduhub-error);
	margin: 0;
	animation: eduhub-message-slide var(--eduhub-transition-fast) var(--eduhub-ease-out);
}

.eduhub-field__success {
	font-size: 0.8125rem;
	color: var(--eduhub-success);
	margin: 0;
	animation: eduhub-message-slide var(--eduhub-transition-fast) var(--eduhub-ease-out);
}

/* ==========================================================================
   Button System (.eduhub-btn)
   ========================================================================== */

.eduhub-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--eduhub-spacing-2);
	font-family: var(--eduhub-font-family);
	font-weight: 600;
	text-decoration: none;
	border: none;
	cursor: pointer;
	transition:
		background-color var(--eduhub-transition-base) var(--eduhub-ease-out),
		color var(--eduhub-transition-base) var(--eduhub-ease-out),
		border-color var(--eduhub-transition-base) var(--eduhub-ease-out),
		box-shadow var(--eduhub-transition-base) var(--eduhub-ease-out),
		transform var(--eduhub-transition-base) var(--eduhub-ease-spring);
}

/* Focus */
.eduhub-btn:focus-visible {
	outline: 2px solid var(--eduhub-primary);
	outline-offset: 2px;
}

/* Sizes */
.eduhub-btn--sm {
	min-height: var(--eduhub-btn-height-sm);
	padding: var(--eduhub-spacing-2) var(--eduhub-spacing-4);
	font-size: 0.875rem;
	border-radius: var(--eduhub-radius-md);
}

.eduhub-btn:not(.eduhub-btn--sm):not(.eduhub-btn--lg) {
	min-height: var(--eduhub-btn-height);
	padding: var(--eduhub-spacing-3) var(--eduhub-spacing-6);
	font-size: 0.9375rem;
	border-radius: var(--eduhub-radius-md);
}

.eduhub-btn--lg {
	min-height: var(--eduhub-btn-height-lg);
	padding: var(--eduhub-spacing-3) var(--eduhub-spacing-6);
	font-size: 0.9375rem;
	font-weight: 600;
	border-radius: var(--eduhub-radius-md);
}

/* Primary variant */
.eduhub-btn--primary {
	background: var(--eduhub-primary);
	color: white;
}

.eduhub-btn--primary:hover:not(:disabled) {
	background: var(--eduhub-primary-hover);
	transform: translateY(-1px);
}

/* Secondary variant */
.eduhub-btn--secondary {
	background: var(--eduhub-bg-surface);
	color: var(--eduhub-text-primary);
	border: 1px solid var(--eduhub-border);
}

.eduhub-btn--secondary:hover:not(:disabled) {
	background: var(--eduhub-bg-surface-secondary);
	transform: translateY(-1px);
}

/* Full Width */
.eduhub-btn--full {
	width: 100%;
}

/* Disabled */
.eduhub-btn:disabled {
	opacity: 0.6;
	cursor: not-allowed;
	transform: none !important;
}

/* Loading */
.eduhub-btn--loading {
	cursor: wait;
	pointer-events: none;
}

/* Inner Elements */
.eduhub-btn__content {
	display: inline-flex;
	align-items: center;
	gap: var(--eduhub-spacing-2);
}

.eduhub-btn__loading {
	display: inline-flex;
	align-items: center;
	gap: var(--eduhub-spacing-2);
}

.eduhub-btn__spinner {
	width: 18px;
	height: 18px;
	border: 2px solid currentColor;
	border-top-color: transparent;
	border-radius: var(--eduhub-radius-full);
	animation: eduhub-spin 0.8s linear infinite;
	opacity: 0.7;
}

.eduhub-btn--lg .eduhub-btn__spinner {
	width: 20px;
	height: 20px;
}

.eduhub-btn--sm .eduhub-btn__spinner {
	width: 16px;
	height: 16px;
}

/* ==========================================================================
   Checkbox (.eduhub-checkbox)
   ========================================================================== */

.eduhub-checkbox {
	display: flex;
	align-items: flex-start;
	gap: var(--eduhub-spacing-3);
	cursor: pointer;
	user-select: none;
}

.eduhub-checkbox:has(.eduhub-checkbox__input:disabled) {
	opacity: 0.5;
	cursor: not-allowed;
}

/* Hidden Native Input */
.eduhub-checkbox__input {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* Custom Checkbox Box */
.eduhub-checkbox__box {
	flex-shrink: 0;
	width: 20px;
	height: 20px;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--eduhub-bg-surface);
	border: 2px solid var(--eduhub-border);
	border-radius: var(--eduhub-radius-sm);
	transition:
		background-color var(--eduhub-transition-fast) var(--eduhub-ease-out),
		border-color var(--eduhub-transition-fast) var(--eduhub-ease-out);
}

/* Check Icon */
.eduhub-checkbox__check {
	width: 12px;
	height: 12px;
	color: white;
	opacity: 0;
	transform: scale(0.5);
	transition:
		opacity var(--eduhub-transition-fast) var(--eduhub-ease-out),
		transform var(--eduhub-transition-fast) var(--eduhub-ease-spring);
}

/* Hover */
.eduhub-checkbox:hover .eduhub-checkbox__box {
	border-color: var(--eduhub-primary);
}

/* Focus */
.eduhub-checkbox__input:focus-visible + .eduhub-checkbox__box {
	border-color: var(--eduhub-primary);
	outline: 2px solid var(--eduhub-primary);
	outline-offset: 2px;
}

/* Checked */
.eduhub-checkbox__input:checked + .eduhub-checkbox__box {
	background: var(--eduhub-primary);
	border-color: var(--eduhub-primary);
}

.eduhub-checkbox__input:checked + .eduhub-checkbox__box .eduhub-checkbox__check {
	opacity: 1;
	transform: scale(1);
}

/* Checkbox Content */
.eduhub-checkbox__content {
	display: flex;
	flex-direction: column;
	gap: var(--eduhub-spacing-1);
	padding-top: 1px;
}

.eduhub-checkbox__label {
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--eduhub-text-primary);
	line-height: 1.4;
}

.eduhub-checkbox__description {
	font-size: 0.8125rem;
	color: var(--eduhub-text-secondary);
	line-height: 1.5;
}

/* ==========================================================================
   Auth Page Layout
   ========================================================================== */

.eduhub-auth-page {
	font-family: var(--eduhub-font-family);
	min-height: 100vh;
	min-height: 100dvh;
	display: flex;
	align-items: center;
	justify-content: center;
	background: var(--eduhub-bg-body);
	padding: var(--eduhub-spacing-4);
}

/* Content Wrapper */
.eduhub-auth-container {
	width: 100%;
	max-width: 24rem;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: var(--eduhub-spacing-5);
}

/* Card */
.eduhub-auth-card {
	width: 100%;
	background: var(--eduhub-bg-surface);
	border: 1px solid var(--eduhub-border);
	border-radius: var(--eduhub-radius-lg);
	padding: clamp(1.25rem, 3.5vw, 2rem);
	box-shadow: var(--eduhub-shadow-card);
}

.eduhub-auth-card__header {
	text-align: center;
	margin-bottom: var(--eduhub-spacing-5);
}

.eduhub-auth-card__title {
	font-size: clamp(1.25rem, 3.5vw, 1.5rem);
	font-weight: 700;
	color: var(--eduhub-text-primary);
	margin: 0;
	line-height: 1.2;
}

.eduhub-auth-card__subtitle {
	margin: var(--eduhub-spacing-2) 0 0;
	color: var(--eduhub-text-secondary);
	font-size: 0.875rem;
}

/* Branding */
.eduhub-auth-branding {
	margin-bottom: var(--eduhub-spacing-2);
}

.eduhub-auth-branding__logo-link {
	display: block;
	transition: transform var(--eduhub-transition-base) var(--eduhub-ease-out);
}

.eduhub-auth-branding__logo-link:hover {
	transform: scale(1.02);
}

.eduhub-auth-branding__logo-img {
	width: 48px;
	height: auto;
}

.eduhub-auth-branding__site-name {
	font-family: var(--eduhub-font-family);
	font-size: 1.25rem;
	font-weight: 700;
	color: var(--eduhub-text-primary);
	text-decoration: none;
}

/* Trust Indicators */
.eduhub-auth-trust {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: var(--eduhub-spacing-6);
}

.eduhub-auth-trust__item {
	display: flex;
	align-items: center;
	gap: var(--eduhub-spacing-2);
	color: var(--eduhub-text-secondary);
	font-size: 0.8125rem;
}

.eduhub-auth-trust__icon {
	width: 16px;
	height: 16px;
	opacity: 0.7;
}

.eduhub-auth-trust__text {
	opacity: 0.8;
}

/* ==========================================================================
   Keyframes
   ========================================================================== */

@keyframes eduhub-spin {
	from { transform: rotate(0deg); }
	to { transform: rotate(360deg); }
}

@keyframes eduhub-message-enter {
	from {
		opacity: 0;
		transform: translateY(-8px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@keyframes eduhub-message-leave {
	from {
		opacity: 1;
		transform: translateY(0);
	}
	to {
		opacity: 0;
		transform: translateY(-8px);
	}
}

@keyframes eduhub-success-enter {
	from {
		opacity: 0;
		transform: scale(0.95);
	}
	to {
		opacity: 1;
		transform: scale(1);
	}
}

@keyframes eduhub-status-pop {
	from {
		opacity: 0;
		transform: translateY(-50%) scale(0.5);
	}
	to {
		opacity: 1;
		transform: translateY(-50%) scale(1);
	}
}

@keyframes eduhub-message-slide {
	from {
		opacity: 0;
		transform: translateY(-4px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

/* ==========================================================================
   Reduced Motion Support
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
	.eduhub-input,
	.eduhub-btn,
	.eduhub-field__icon,
	.eduhub-field__status,
	.eduhub-field__error,
	.eduhub-field__success,
	.eduhub-checkbox__box,
	.eduhub-checkbox__check,
	.eduhub-auth-branding__logo-link {
		transition: none;
	}

	.eduhub-field__status,
	.eduhub-field__error,
	.eduhub-field__success {
		animation: none;
	}

	.eduhub-btn:hover:not(:disabled) {
		transform: none;
	}

	/* Keep spinner animation for loading feedback */
	.eduhub-btn__spinner {
		animation: eduhub-spin 0.8s linear infinite;
	}
}

/* ==========================================================================
   Touch Devices
   ========================================================================== */

@media (hover: none) {
	.eduhub-btn:hover:not(:disabled) {
		transform: none;
	}

	.eduhub-auth-branding__logo-link:hover {
		transform: none;
	}
}