/**
 * DreamNextAI KDP Tools — Printability Checker styles.
 *
 * Phase 1 scope: only the dropzone is fully styled. The
 * .dnai-kdp-checker__results block is styled minimally now (just
 * enough structure) and will be filled out in Phase 2/3 once the
 * calculation engine and result markup exist.
 */

.dnai-kdp-dropzone {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	text-align: center;
	padding: var(--dnai-space-5) var(--dnai-space-3);
	border: 2px dashed var(--dnai-color-border);
	border-radius: var(--dnai-radius);
	background: var(--dnai-color-surface);
	cursor: pointer;
	transition: border-color 0.15s ease, background-color 0.15s ease;
}

.dnai-kdp-dropzone:hover {
	border-color: var(--dnai-color-primary);
}

.dnai-kdp-dropzone:focus-visible {
	outline: 3px solid #90b4ff;
	outline-offset: 2px;
}

/* Applied via JS while a file is being dragged over the zone. */
.dnai-kdp-dropzone.is-dragover {
	border-color: var(--dnai-color-primary);
	background: #eef4ff;
}

.dnai-kdp-dropzone__icon {
	font-size: 2.5rem;
	line-height: 1;
	margin-bottom: var(--dnai-space-2);
}

.dnai-kdp-dropzone__primary {
	margin: 0 0 var(--dnai-space-1) 0;
	font-size: 1.0625rem;
	font-weight: 600;
}

.dnai-kdp-dropzone__secondary {
	margin: 0 0 var(--dnai-space-2) 0;
	color: var(--dnai-color-text-muted);
	font-size: 0.875rem;
}

.dnai-kdp-dropzone__help {
	margin: var(--dnai-space-2) 0 0 0;
	font-size: 0.8125rem;
	color: var(--dnai-color-text-muted);
}

.dnai-kdp-checker__results {
	margin-top: var(--dnai-space-4);
}

.dnai-kdp-checker__results[hidden] {
	display: none;
}

/* -----------------------------------------------------------------
   Controls panel (Phase 3): trim size select, usage radios, custom
   size fields.
   ----------------------------------------------------------------- */

.dnai-kdp-controls {
	margin-top: var(--dnai-space-4);
	padding: var(--dnai-space-3);
	border: 1px solid var(--dnai-color-border);
	border-radius: var(--dnai-radius);
	background: var(--dnai-color-bg);
}

.dnai-kdp-field {
	margin-bottom: var(--dnai-space-3);
}

.dnai-kdp-field label,
.dnai-kdp-field__label {
	display: block;
	margin-bottom: var(--dnai-space-1);
	font-weight: 600;
	font-size: 0.9375rem;
}

.dnai-kdp-select,
.dnai-kdp-number-input {
	width: 100%;
	min-height: 44px;
	padding: 8px 12px;
	font-size: 1rem;
	border: 1px solid var(--dnai-color-border);
	border-radius: var(--dnai-radius-sm);
	background: var(--dnai-color-bg);
	color: var(--dnai-color-text);
}

.dnai-kdp-select:focus-visible,
.dnai-kdp-number-input:focus-visible {
	outline: 3px solid #90b4ff;
	outline-offset: 1px;
}

.dnai-kdp-fieldset {
	border: none;
	padding: 0;
	margin: 0 0 var(--dnai-space-3) 0;
}

.dnai-kdp-fieldset legend {
	font-weight: 600;
	font-size: 0.9375rem;
	margin-bottom: var(--dnai-space-2);
	padding: 0;
}

.dnai-kdp-radio-option {
	display: flex;
	align-items: flex-start;
	gap: var(--dnai-space-2);
	padding: var(--dnai-space-2) 0;
}

.dnai-kdp-radio-option input[type='radio'] {
	margin-top: 4px;
	flex: none;
	width: 20px;
	height: 20px;
}

.dnai-kdp-radio-option label {
	display: flex;
	flex-direction: column;
	cursor: pointer;
}

.dnai-kdp-radio-option__label {
	font-weight: 600;
}

.dnai-kdp-radio-option__help {
	font-size: 0.8125rem;
	color: var(--dnai-color-text-muted);
}

.dnai-kdp-custom-size {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: var(--dnai-space-3);
}

/* -----------------------------------------------------------------
   Results card (Phase 3): DPI comparison, facts grid, verdict.
   ----------------------------------------------------------------- */

.dnai-kdp-results-card {
	margin-top: var(--dnai-space-4);
	padding: var(--dnai-space-3);
	border: 2px solid var(--dnai-color-border);
	border-radius: var(--dnai-radius);
}

.dnai-kdp-results-card--ready {
	border-color: var(--dnai-color-success);
}

.dnai-kdp-results-card--needs-adjustment {
	border-color: var(--dnai-color-warning);
}

.dnai-kdp-results-card__title {
	margin: 0 0 var(--dnai-space-3) 0;
	font-size: 1.125rem;
}

.dnai-kdp-dpi-comparison {
	margin-bottom: var(--dnai-space-3);
	padding-bottom: var(--dnai-space-3);
	border-bottom: 1px solid var(--dnai-color-border);
}

.dnai-kdp-callout {
	margin: var(--dnai-space-2) 0 0 0;
	padding: var(--dnai-space-2) var(--dnai-space-3);
	border-radius: var(--dnai-radius-sm);
	font-size: 0.875rem;
	line-height: 1.5;
}

.dnai-kdp-callout--warning {
	background: var(--dnai-color-warning-bg);
	color: var(--dnai-color-warning);
}

.dnai-kdp-facts-grid {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.dnai-kdp-fact-row {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	gap: var(--dnai-space-2);
	padding: var(--dnai-space-2) var(--dnai-space-2);
	border-radius: var(--dnai-radius-sm);
	font-size: 0.9375rem;
}

.dnai-kdp-fact-row__label {
	color: var(--dnai-color-text-muted);
	flex: 1 1 auto;
}

.dnai-kdp-fact-row__value {
	font-weight: 600;
	text-align: right;
	flex: 1 1 auto;
}

.dnai-kdp-verdict {
	margin-top: var(--dnai-space-3);
	padding: var(--dnai-space-3);
	border-radius: var(--dnai-radius-sm);
}

.dnai-kdp-verdict--ready {
	background: var(--dnai-color-success-bg);
}

.dnai-kdp-verdict--needs-adjustment {
	background: var(--dnai-color-warning-bg);
}

.dnai-kdp-verdict__heading {
	margin: 0 0 var(--dnai-space-2) 0;
	font-size: 1.0625rem;
	font-weight: 700;
}

.dnai-kdp-verdict__body {
	margin: 0 0 var(--dnai-space-2) 0;
	line-height: 1.6;
}

.dnai-kdp-verdict__label {
	margin: var(--dnai-space-2) 0 4px 0;
	font-weight: 700;
	font-size: 0.875rem;
	text-transform: uppercase;
	letter-spacing: 0.02em;
}

/* -----------------------------------------------------------------
   Visual print / bleed preview (Phase 3, project brief section 11).
   ----------------------------------------------------------------- */

.dnai-kdp-visual-preview {
	margin-top: var(--dnai-space-4);
}

.dnai-kdp-visual-preview__title {
	margin: 0 0 var(--dnai-space-2) 0;
	font-size: 1.125rem;
}

.dnai-kdp-mode-toggle {
	display: flex;
	gap: var(--dnai-space-1);
	margin-bottom: var(--dnai-space-3);
	flex-wrap: wrap;
}

.dnai-kdp-mode-toggle__btn {
	min-height: 40px;
	padding: 6px 14px;
	font-size: 0.875rem;
	font-weight: 600;
	border: 1px solid var(--dnai-color-border);
	border-radius: 999px;
	background: var(--dnai-color-bg);
	color: var(--dnai-color-text);
	cursor: pointer;
}

.dnai-kdp-mode-toggle__btn.is-active {
	background: var(--dnai-color-primary);
	border-color: var(--dnai-color-primary);
	color: #ffffff;
}

.dnai-kdp-mode-toggle__btn:focus-visible {
	outline: 3px solid #90b4ff;
	outline-offset: 2px;
}

/* The page/bleed diagram. aspect-ratio is set inline per-render since
   it's data-driven (depends on the selected trim size); everything
   else here is static. */
.dnai-kdp-page-frame {
	position: relative;
	max-width: 320px;
	margin: 0 auto;
	background: repeating-conic-gradient(#e9ebee 0% 25%, #f7f8fa 0% 50%) 50% / 16px 16px;
	border: 2px dashed transparent;
}

.dnai-kdp-page-frame--bleed {
	border-color: var(--dnai-color-warning);
}

.dnai-kdp-page-frame__trim {
	position: absolute;
	top: 0;
	left: 0;
	border: 2px solid var(--dnai-color-primary);
	overflow: hidden;
	background: var(--dnai-color-bg);
}

.dnai-kdp-page-frame__image {
	display: block;
	width: 100%;
	height: 100%;
}

.dnai-kdp-page-frame__image--contain {
	object-fit: contain;
}

.dnai-kdp-page-frame__image--cover {
	object-fit: cover;
}

.dnai-kdp-page-frame__label {
	position: absolute;
	top: 4px;
	left: 4px;
	padding: 2px 8px;
	font-size: 0.6875rem;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: 0.03em;
	background: var(--dnai-color-primary);
	color: #ffffff;
	border-radius: 999px;
	z-index: 2;
}

.dnai-kdp-page-frame__label--bleed {
	top: -10px;
	left: -10px;
	background: var(--dnai-color-warning);
}

.dnai-kdp-visual-preview__caption {
	margin: var(--dnai-space-2) 0 0 0;
	font-size: 0.8125rem;
	color: var(--dnai-color-text-muted);
	text-align: center;
	max-width: 480px;
	margin-left: auto;
	margin-right: auto;
}

/* Mobile: stack the custom width/height fields instead of two
   columns, and give the diagram more breathing room relative to the
   narrower viewport. */
@media (max-width: 480px) {
	.dnai-kdp-custom-size {
		grid-template-columns: 1fr;
	}

	.dnai-kdp-fact-row {
		flex-direction: column;
		align-items: flex-start;
		gap: 2px;
	}

	.dnai-kdp-fact-row__value {
		text-align: left;
	}

	.dnai-kdp-page-frame {
		max-width: 100%;
	}
}

/* Preview card rendered by checker.js after an image loads. */
.dnai-kdp-preview-card {
	display: flex;
	flex-direction: column;
	gap: var(--dnai-space-3);
	padding: var(--dnai-space-3);
	border: 1px solid var(--dnai-color-border);
	border-radius: var(--dnai-radius);
	background: var(--dnai-color-surface);
}

.dnai-kdp-preview-card__thumb {
	max-width: 100%;
	max-height: 280px;
	width: auto;
	height: auto;
	object-fit: contain;
	border-radius: var(--dnai-radius-sm);
	align-self: center;
	background: repeating-conic-gradient(#e9ebee 0% 25%, #f7f8fa 0% 50%) 50% / 20px 20px;
}

.dnai-kdp-preview-card__meta {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: var(--dnai-space-1) var(--dnai-space-3);
	margin: 0;
}

.dnai-kdp-preview-card__meta dt {
	font-weight: 600;
	color: var(--dnai-color-text-muted);
}

.dnai-kdp-preview-card__meta dd {
	margin: 0;
	word-break: break-word;
}

.dnai-kdp-preview-card__note {
	margin: 0;
	padding-top: var(--dnai-space-2);
	border-top: 1px solid var(--dnai-color-border);
	font-size: 0.875rem;
	color: var(--dnai-color-text-muted);
}

/* Error box rendered by checker.js on read/decode failure. */
.dnai-kdp-error {
	padding: var(--dnai-space-3);
	border-radius: var(--dnai-radius-sm);
}

.dnai-kdp-error__heading {
	margin: 0 0 var(--dnai-space-2) 0;
	font-weight: 600;
}

.dnai-kdp-error ul {
	margin: 0;
	padding-left: 1.25em;
}

/* Mobile: keep the dropzone comfortably tappable without feeling
   oversized on small viewports. */
@media (max-width: 480px) {
	.dnai-kdp-dropzone {
		padding: var(--dnai-space-4) var(--dnai-space-2);
	}

	.dnai-kdp-btn {
		width: 100%;
	}
}