/**
 * ISK Booking Form — Frontend Styles
 *
 * Calendly-inspired: month calendar, split date/time layout,
 * step indicator, theme-agnostic with CSS custom properties.
 * Uses View Transitions API for smooth step changes.
 * WCAG 2.2 AA compliant.
 */

.isk-booking {
	--isk-radius: 8px;
	--isk-radius-lg: 12px;
	--isk-gap: 16px;
	--isk-primary: var(--wp--preset--color--primary, #2563eb);
	--isk-primary-hover: var(--wp--preset--color--secondary, #1d4ed8);
	--isk-primary-light: color-mix(in srgb, var(--isk-primary) 10%, transparent);
	--isk-border: #e2e8f0;
	--isk-bg: #fff;
	--isk-bg-hover: #f8fafc;
	--isk-bg-muted: #f1f5f9;
	--isk-text: inherit;
	--isk-text-muted: #64748b;
	--isk-success: #16a34a;
	--isk-success-light: #f0fdf4;
	--isk-error: #dc2626;
	--isk-error-light: #fef2f2;

	max-width: 720px;
	font-family: inherit;
	color: var(--isk-text);
}

/* ── Step container ── */

.isk-booking__step {
	/* Entrance animation handled by View Transitions API.
	   No CSS animation here — it conflicts with VT crossfade. */
}

/* ── View Transitions ── */

.isk-booking__step,
.isk-booking__loading {
	view-transition-name: isk-booking-step;
}

/* Default browser crossfade: balanced opacity 0→1 / 1→0.
   Custom duration for a snappy feel. */
::view-transition-old(isk-booking-step),
::view-transition-new(isk-booking-step) {
	animation-duration: 0.2s;
}

/* Programmatic focus on headings: no outline ring. */
.isk-booking [tabindex="-1"]:focus:not(:focus-visible) {
	outline: none;
}

.isk-booking__step-title {
	font-size: 1.125rem;
	font-weight: 600;
	margin: 0 0 var(--isk-gap);
}

/* ── Step indicator ── */

.isk-booking__indicator {
	display: flex;
	align-items: center;
	gap: 0;
	margin-bottom: 24px;
}

.isk-booking__indicator-step {
	display: flex;
	align-items: center;
	gap: 6px;
	flex-shrink: 0;
}

.isk-booking__indicator-dot {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	border-radius: 50%;
	font-size: 0.75rem;
	font-weight: 600;
	background: var(--isk-bg-muted);
	color: var(--isk-text-muted);
	transition: background-color 0.2s, color 0.2s;
}

.isk-booking__indicator-step.is-current .isk-booking__indicator-dot {
	background: var(--isk-primary);
	color: #fff;
}

.isk-booking__indicator-step.is-done .isk-booking__indicator-dot {
	background: var(--isk-success);
	color: #fff;
}

.isk-booking__indicator-label {
	font-size: 0.8125rem;
	color: var(--isk-text-muted);
	white-space: nowrap;
	display: none;
}

.isk-booking__indicator-step.is-current .isk-booking__indicator-label {
	color: var(--isk-text);
	font-weight: 500;
}

@media (min-width: 480px) {
	.isk-booking__indicator-label {
		display: inline;
	}
}

.isk-booking__indicator-line {
	flex: 1;
	height: 2px;
	background: var(--isk-border);
	margin: 0 8px;
	min-width: 16px;
	transition: background-color 0.2s;
}

.isk-booking__indicator-line.is-done {
	background: var(--isk-success);
}

/* ── Service list ── */

.isk-booking__services {
	display: flex;
	flex-direction: column;
	gap: 8px;
	list-style: none;
	margin: 0;
	padding: 0;
}

.isk-booking__service-btn {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--isk-gap);
	width: 100%;
	padding: 16px;
	border: 1px solid var(--isk-border);
	border-radius: var(--isk-radius);
	background: var(--isk-bg);
	cursor: pointer;
	text-align: start;
	font: inherit;
	color: inherit;
	transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
}

.isk-booking__service-btn:hover,
.isk-booking__service-btn:focus-visible {
	border-color: var(--isk-primary);
	background: var(--isk-bg-hover);
	box-shadow: 0 0 0 3px var(--isk-primary-light);
}

.isk-booking__service-info {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.isk-booking__service-name {
	font-weight: 600;
}

.isk-booking__service-desc {
	font-size: 0.875rem;
	color: var(--isk-text-muted);
}

.isk-booking__service-details {
	display: flex;
	flex-wrap: wrap;
	gap: 6px;
	flex-shrink: 0;
}

.isk-booking__service-badge {
	display: inline-flex;
	padding: 2px 8px;
	font-size: 0.75rem;
	font-weight: 500;
	background: var(--isk-bg-muted);
	border-radius: 100px;
	color: var(--isk-text-muted);
	white-space: nowrap;
}

/* ── Date + Time split layout ── */

.isk-booking__datetime {
	display: flex;
	flex-direction: column;
	gap: 24px;
}

@media (min-width: 600px) {
	.isk-booking__datetime {
		flex-direction: row;
		gap: 32px;
	}

	.isk-booking__calendar {
		flex: 0 0 auto;
		width: 320px;
	}

	.isk-booking__timeslots {
		flex: 1;
		min-width: 0;
	}
}

/* ── Month calendar ── */

.isk-booking__calendar-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	margin-bottom: 12px;
}

.isk-booking__month-label {
	font-weight: 600;
	font-size: 1rem;
}

.isk-booking__month-nav {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 44px;
	height: 44px;
	border: 1px solid var(--isk-border);
	border-radius: var(--isk-radius);
	background: var(--isk-bg);
	cursor: pointer;
	font-size: 1.25rem;
	font-family: inherit;
	color: inherit;
	transition: border-color 0.15s, background-color 0.15s;
}

.isk-booking__month-nav:hover,
.isk-booking__month-nav:focus-visible {
	border-color: var(--isk-primary);
	background: var(--isk-bg-hover);
}

.isk-booking__calendar-grid {
	display: grid;
	grid-template-columns: repeat(7, 1fr);
	gap: 2px;
}

.isk-booking__weekday-header {
	display: flex;
	align-items: center;
	justify-content: center;
	height: 32px;
	font-size: 0.75rem;
	font-weight: 600;
	color: var(--isk-text-muted);
	text-transform: uppercase;
	letter-spacing: 0.05em;
}

.isk-booking__calendar-cell {
	display: flex;
	align-items: center;
	justify-content: center;
	aspect-ratio: 1;
	min-height: 44px;
	border: none;
	border-radius: 50%;
	background: none;
	font: inherit;
	font-size: 0.875rem;
	color: var(--isk-text-muted);
	padding: 0;
}

.isk-booking__calendar-cell.is-empty {
	visibility: hidden;
}

.isk-booking__calendar-cell.is-past {
	color: var(--isk-border);
}

.isk-booking__calendar-cell.is-available {
	color: var(--isk-text);
	font-weight: 500;
	cursor: pointer;
	transition: background-color 0.15s, color 0.15s;
}

.isk-booking__calendar-cell.is-available:hover,
.isk-booking__calendar-cell.is-available:focus-visible {
	background: var(--isk-primary-light);
	color: var(--isk-primary);
}

.isk-booking__calendar-cell.is-selected {
	background: var(--isk-primary);
	color: #fff;
	font-weight: 600;
}

/* ── Time slots panel ── */

.isk-booking__timeslots {
	min-height: 200px;
}

.isk-booking__timeslots-title {
	font-size: 1rem;
	font-weight: 600;
	margin: 0 0 12px;
}

.isk-booking__timeslots-empty {
	display: flex;
	align-items: center;
	justify-content: center;
	min-height: 200px;
	color: var(--isk-text-muted);
	font-size: 0.875rem;
}

.isk-booking__slots-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
	gap: 8px;
}

.isk-booking__slot-btn {
	padding: 10px 12px;
	min-height: 44px;
	border: 1px solid var(--isk-border);
	border-radius: var(--isk-radius);
	background: var(--isk-bg);
	cursor: pointer;
	font: inherit;
	font-size: 0.875rem;
	font-variant-numeric: tabular-nums;
	text-align: center;
	transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s;
}

.isk-booking__slot-btn:hover,
.isk-booking__slot-btn:focus-visible {
	border-color: var(--isk-primary);
	background: var(--isk-bg-hover);
	box-shadow: 0 0 0 3px var(--isk-primary-light);
}

.isk-booking__slot-btn.is-selected {
	background: var(--isk-primary);
	border-color: var(--isk-primary);
	color: #fff;
	font-weight: 500;
}

.isk-booking__no-slots {
	color: var(--isk-text-muted);
	font-size: 0.875rem;
	margin: 0;
}

.isk-booking__continue {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 100%;
	margin-top: 16px;
	padding: 12px 24px;
	min-height: 48px;
	border: none;
	border-radius: var(--isk-radius);
	background: var(--isk-primary);
	color: #fff;
	font: inherit;
	font-weight: 600;
	cursor: pointer;
	transition: background-color 0.15s;
}

.isk-booking__continue:hover,
.isk-booking__continue:focus-visible {
	background: var(--isk-primary-hover);
}

/* ── Contact form ── */

.isk-booking__form {
	display: flex;
	flex-direction: column;
	gap: var(--isk-gap);
}

.isk-booking__field {
	display: flex;
	flex-direction: column;
	gap: 4px;
}

.isk-booking__label {
	font-size: 0.875rem;
	font-weight: 500;
}

.isk-booking__input,
.isk-booking__textarea,
.isk-booking__select {
	padding: 10px 12px;
	border: 1px solid var(--isk-border);
	border-radius: var(--isk-radius);
	font: inherit;
	font-size: 1rem;
	background: var(--isk-bg);
	min-height: 44px;
	transition: border-color 0.15s, box-shadow 0.15s;
}

.isk-booking__input:focus-visible,
.isk-booking__textarea:focus-visible,
.isk-booking__select:focus-visible {
	border-color: var(--isk-primary);
	box-shadow: 0 0 0 3px var(--isk-primary-light);
	outline: none;
}

.isk-booking__input[aria-invalid="true"],
.isk-booking__textarea[aria-invalid="true"],
.isk-booking__select[aria-invalid="true"] {
	border-color: var(--isk-error);
}

.isk-booking__input[aria-invalid="true"]:focus-visible,
.isk-booking__textarea[aria-invalid="true"]:focus-visible,
.isk-booking__select[aria-invalid="true"]:focus-visible {
	box-shadow: 0 0 0 3px color-mix(in srgb, var(--isk-error) 15%, transparent);
}

.isk-booking__field-error {
	font-size: 0.8125rem;
	color: var(--isk-error);
}

.isk-booking__textarea {
	min-height: 88px;
	resize: vertical;
}

/* ── Buttons ── */

.isk-booking__submit {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	padding: 12px 24px;
	min-height: 48px;
	border: none;
	border-radius: var(--isk-radius);
	background: var(--isk-primary);
	color: #fff;
	font: inherit;
	font-weight: 600;
	cursor: pointer;
	transition: background-color 0.15s;
}

.isk-booking__submit:hover,
.isk-booking__submit:focus-visible {
	background: var(--isk-primary-hover);
}

.isk-booking__submit[disabled] {
	opacity: 0.6;
	cursor: not-allowed;
}

.isk-booking__back {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 8px 0;
	border: none;
	background: none;
	font: inherit;
	font-size: 0.875rem;
	color: var(--isk-text-muted);
	cursor: pointer;
	min-height: 44px;
	margin-bottom: 4px;
}

.isk-booking__back:hover {
	color: var(--isk-text);
}

/* ── Status messages ── */

.isk-booking__message {
	padding: 16px;
	border-radius: var(--isk-radius);
	background: var(--isk-success-light);
	border: 1px solid #bbf7d0;
	color: #166534;
}

.isk-booking__error {
	background: var(--isk-error-light);
	border-color: #fecaca;
	color: #991b1b;
}

.isk-booking__loading {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 48px 24px;
	color: var(--isk-text-muted);
}

.isk-booking__loading-inline {
	padding: 24px;
	text-align: center;
	color: var(--isk-text-muted);
	font-size: 0.875rem;
}

.isk-booking__spinner {
	width: 20px;
	height: 20px;
	border: 2px solid var(--isk-border);
	border-top-color: var(--isk-primary);
	border-radius: 50%;
	animation: isk-spin 0.6s linear infinite;
}

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

/* ── Summary row ── */

.isk-booking__summary {
	padding: 10px 16px;
	background: var(--isk-bg-muted);
	border-radius: var(--isk-radius);
	font-size: 0.875rem;
	margin-bottom: var(--isk-gap);
}

/* ── Confirmation ── */

.isk-booking__confirmation {
	text-align: center;
	padding: 24px 0;
}

.isk-booking__confirmation-icon {
	display: flex;
	align-items: center;
	justify-content: center;
	width: 56px;
	height: 56px;
	margin: 0 auto 16px;
	border-radius: 50%;
	background: var(--isk-success-light);
	color: var(--isk-success);
	font-size: 1.5rem;
	font-weight: 700;
}

.isk-booking__confirmation-title {
	font-size: 1.25rem;
	font-weight: 600;
	margin: 0 0 24px;
}

.isk-booking__confirmation-details {
	display: flex;
	flex-direction: column;
	gap: 0;
	max-width: 360px;
	margin: 0 auto 24px;
	text-align: left;
	border: 1px solid var(--isk-border);
	border-radius: var(--isk-radius);
	overflow: hidden;
}

.isk-booking__confirmation-row {
	display: flex;
	justify-content: space-between;
	gap: 16px;
	padding: 10px 16px;
	font-size: 0.875rem;
}

.isk-booking__confirmation-row:not(:last-child) {
	border-bottom: 1px solid var(--isk-border);
}

.isk-booking__confirmation-row strong {
	color: var(--isk-text-muted);
	font-weight: 500;
}

.isk-booking__confirmation-note {
	font-size: 0.875rem;
	color: var(--isk-text-muted);
	margin: 0;
}

/* ── Utilities ── */

.isk-booking__sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border: 0;
}

/* ── Reduced Motion ── */

@media (prefers-reduced-motion: reduce) {
	::view-transition-old(isk-booking-step),
	::view-transition-new(isk-booking-step) {
		animation: none;
	}
}