/* =========================================================
   Nexo primitives — desktop-first.
   Mobile is an adaptation; baseline assumes ≥1024px.
   Scoped under `.nx-shell` so class names don't leak.
   ========================================================= */

.nx-shell {
	font-family: var(--nx-font-body);
	font-size: var(--nx-text-base);
	color: var(--nx-fg);
	background: var(--nx-bg);
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
	text-rendering: optimizeLegibility;
	font-feature-settings: 'cv11', 'ss01';
	min-height: 100vh;
}

.nx-shell *,
.nx-shell *::before,
.nx-shell *::after {
	box-sizing: border-box;
}

.nx-shell button {
	font: inherit;
	color: inherit;
	cursor: pointer;
}
.nx-shell input,
.nx-shell textarea,
.nx-shell select {
	font: inherit;
	color: inherit;
}

.nx-shell :focus {
	outline: none;
}
.nx-shell :focus-visible {
	outline: 2px solid var(--nx-accent);
	outline-offset: 2px;
	border-radius: var(--nx-radius-sm);
}

.nx-shell a {
	color: var(--nx-fg);
	text-decoration: none;
}

/* ---------- Type scale helpers ---------- */
.nx-h1 {
	font-family: var(--nx-font-display);
	font-size: var(--nx-text-3xl);
	font-weight: 600;
	letter-spacing: -0.02em;
	line-height: 1.15;
	margin: 0;
}
.nx-h2 {
	font-family: var(--nx-font-display);
	font-size: var(--nx-text-2xl);
	font-weight: 600;
	letter-spacing: -0.015em;
	line-height: 1.2;
	margin: 0;
}
.nx-h3 {
	font-size: var(--nx-text-lg);
	font-weight: 600;
	letter-spacing: -0.005em;
	line-height: 1.3;
	margin: 0;
}
.nx-eyebrow {
	font-size: var(--nx-text-xs);
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.06em;
	color: var(--nx-fg-muted);
}
.nx-text-muted {
	color: var(--nx-fg-muted);
}
.nx-text-sm {
	font-size: var(--nx-text-sm);
}

/* ---------- Buttons ---------- */
.nx-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	height: 36px;
	padding: 0 14px;
	border: 1px solid transparent;
	border-radius: var(--nx-radius-md);
	font-weight: 500;
	font-size: var(--nx-text-sm);
	letter-spacing: -0.005em;
	cursor: pointer;
	transition:
		background var(--nx-dur-fast) var(--nx-soft-curve),
		border-color var(--nx-dur-fast) var(--nx-soft-curve),
		color var(--nx-dur-fast) var(--nx-soft-curve),
		box-shadow var(--nx-dur-fast) var(--nx-soft-curve);
	user-select: none;
	-webkit-tap-highlight-color: transparent;
	white-space: nowrap;
	text-decoration: none;
}
.nx-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.nx-btn-primary {
	background: var(--nx-accent);
	color: var(--nx-accent-fg);
	border-color: var(--nx-accent);
	box-shadow: var(--nx-shadow-xs);
}
.nx-btn-primary:hover:not(:disabled) {
	background: var(--nx-accent-strong);
	border-color: var(--nx-accent-strong);
}
.nx-btn-primary:focus-visible {
	box-shadow: var(--nx-ring-accent);
	outline: none;
}

.nx-btn-secondary {
	background: var(--nx-bg-elevated);
	color: var(--nx-fg);
	border-color: var(--nx-border-strong);
	box-shadow: var(--nx-shadow-xs);
}
.nx-btn-secondary:hover:not(:disabled) {
	background: var(--nx-bg-inset);
	border-color: var(--nx-border-strong);
}

.nx-btn-ghost {
	background: transparent;
	color: var(--nx-fg-muted);
}
.nx-btn-ghost:hover:not(:disabled) {
	background: var(--nx-bg-inset);
	color: var(--nx-fg);
}

.nx-btn-danger {
	background: var(--nx-danger);
	color: var(--nx-fg-on-accent);
	border-color: var(--nx-danger);
}
.nx-btn-danger:hover:not(:disabled) {
	background: color-mix(in srgb, var(--nx-danger) 90%, black);
}

.nx-btn-block {
	width: 100%;
}
.nx-btn-lg {
	height: 44px;
	padding: 0 18px;
	font-size: var(--nx-text-md);
}
.nx-btn-sm {
	height: 28px;
	padding: 0 10px;
	font-size: var(--nx-text-xs);
}

/* Icon-only square button. Used in toolbars, headers, photo cards. */
.nx-icon-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 36px;
	height: 36px;
	border: 1px solid transparent;
	border-radius: var(--nx-radius-md);
	background: transparent;
	color: var(--nx-fg-muted);
	cursor: pointer;
	transition:
		background var(--nx-dur-fast) var(--nx-soft-curve),
		color var(--nx-dur-fast) var(--nx-soft-curve);
}
.nx-icon-btn:hover:not(:disabled) {
	background: var(--nx-bg-inset);
	color: var(--nx-fg);
}
.nx-icon-btn:disabled {
	opacity: 0.4;
	cursor: not-allowed;
}

/* ---------- Form fields ---------- */
.nx-field {
	display: flex;
	flex-direction: column;
	gap: 6px;
	margin: 0;
}
.nx-field-label {
	font-size: var(--nx-text-sm);
	font-weight: 500;
	color: var(--nx-fg);
	letter-spacing: -0.005em;
}
.nx-field-input,
.nx-field-textarea,
.nx-field-select {
	width: 100%;
	min-height: 36px;
	padding: 8px 12px;
	border: 1px solid var(--nx-border-strong);
	border-radius: var(--nx-radius-md);
	background: var(--nx-bg-elevated);
	color: var(--nx-fg);
	font-size: var(--nx-text-sm);
	transition:
		border-color var(--nx-dur-fast) var(--nx-soft-curve),
		box-shadow var(--nx-dur-fast) var(--nx-soft-curve);
}
.nx-field-textarea {
	min-height: 88px;
	resize: vertical;
	line-height: 1.5;
}
.nx-field-input:focus,
.nx-field-textarea:focus,
.nx-field-select:focus {
	border-color: var(--nx-accent);
	box-shadow: var(--nx-ring-accent);
	outline: none;
}
.nx-field-input::placeholder,
.nx-field-textarea::placeholder {
	color: var(--nx-fg-subtle);
}

.nx-field-input[aria-invalid='true'],
.nx-field.has-error .nx-field-input,
.nx-field.has-error .nx-field-textarea,
.nx-field.has-error .nx-field-select {
	border-color: var(--nx-danger);
}
.nx-field.has-error .nx-field-input:focus,
.nx-field.has-error .nx-field-textarea:focus,
.nx-field.has-error .nx-field-select:focus {
	box-shadow: var(--nx-ring-danger);
}
.nx-field-help {
	font-size: var(--nx-text-xs);
	color: var(--nx-fg-muted);
	margin: 0;
}
.nx-field-error {
	font-size: var(--nx-text-xs);
	color: var(--nx-danger);
	display: flex;
	align-items: center;
	gap: 4px;
	margin: 0;
}

/* Strength meter */
.nx-strength {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 4px;
}
.nx-strength-bar {
	height: 3px;
	border-radius: var(--nx-radius-pill);
	background: var(--nx-bg-inset);
	transition: background var(--nx-dur-base) var(--nx-soft-curve);
}
.nx-strength-bar.on-1 {
	background: var(--nx-danger);
}
.nx-strength-bar.on-2 {
	background: var(--nx-warning);
}
.nx-strength-bar.on-3 {
	background: var(--nx-info);
}
.nx-strength-bar.on-4 {
	background: var(--nx-success);
}

/* Checkbox */
.nx-check {
	display: flex;
	align-items: flex-start;
	gap: 10px;
	cursor: pointer;
	font-size: var(--nx-text-sm);
	color: var(--nx-fg);
	line-height: 1.5;
}
.nx-check input {
	position: absolute;
	width: 1px;
	height: 1px;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
}
.nx-check .box {
	flex-shrink: 0;
	width: 18px;
	height: 18px;
	border: 1.5px solid var(--nx-border-strong);
	border-radius: var(--nx-radius-xs);
	background: var(--nx-bg-elevated);
	display: grid;
	place-items: center;
	margin-top: 1px;
	transition: all var(--nx-dur-fast) var(--nx-soft-curve);
}
.nx-check input:focus-visible ~ .box {
	box-shadow: var(--nx-ring-accent);
}
.nx-check input:checked ~ .box {
	background: var(--nx-accent);
	border-color: var(--nx-accent);
}
.nx-check input:checked ~ .box::after {
	content: '';
	width: 9px;
	height: 5px;
	border-left: 2px solid var(--nx-accent-fg);
	border-bottom: 2px solid var(--nx-accent-fg);
	transform: rotate(-45deg) translate(1px, -1px);
}

/* ---------- Banners (alerts / inline status) ---------- */
.nx-banner {
	background: var(--nx-danger-soft);
	border: 1px solid var(--nx-danger-border);
	color: var(--nx-danger);
	padding: 10px 14px;
	border-radius: var(--nx-radius-md);
	margin: 0;
	font-size: var(--nx-text-sm);
	display: flex;
	align-items: center;
	gap: 10px;
}
.nx-banner-success {
	background: var(--nx-success-soft);
	border-color: var(--nx-success-border);
	color: var(--nx-success);
}
.nx-banner-warning {
	background: var(--nx-warning-soft);
	border-color: var(--nx-warning-border);
	color: var(--nx-warning);
}
.nx-banner-info {
	background: var(--nx-info-soft);
	border-color: var(--nx-info-border);
	color: var(--nx-info);
}

/* ---------- Pills (filter chips, intent tags) ---------- */
.nx-pill {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	height: 28px;
	padding: 0 12px;
	border: 1px solid var(--nx-border-strong);
	background: var(--nx-bg-elevated);
	color: var(--nx-fg);
	border-radius: var(--nx-radius-pill);
	font-size: var(--nx-text-xs);
	font-weight: 500;
	cursor: pointer;
	transition: all var(--nx-dur-fast) var(--nx-soft-curve);
	white-space: nowrap;
	user-select: none;
}
.nx-pill:hover:not([aria-pressed='true']):not([data-active='true']):not(:disabled) {
	border-color: var(--nx-fg-subtle);
}
.nx-pill[aria-pressed='true'],
.nx-pill[data-active='true'] {
	background: var(--nx-accent-soft);
	border-color: var(--nx-accent-border);
	color: var(--nx-accent);
}
.nx-pill:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.nx-tag {
	display: inline-flex;
	align-items: center;
	gap: 4px;
	padding: 3px 8px;
	border: 1px solid var(--nx-border);
	border-radius: var(--nx-radius-sm);
	font-size: var(--nx-text-xs);
	color: var(--nx-fg-muted);
	background: var(--nx-bg-sunken);
}

/* ---------- Card / Panel ---------- */
.nx-panel {
	background: var(--nx-bg-elevated);
	border: 1px solid var(--nx-border);
	border-radius: var(--nx-radius-lg);
	overflow: hidden;
}
.nx-panel-header {
	padding: 16px 20px;
	border-bottom: 1px solid var(--nx-border);
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
}
.nx-panel-body {
	padding: 20px;
}

/* ---------- Page header (h1 + lede + actions) ---------- */
.nx-page-header {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 16px;
	padding: 28px 0 20px;
	border-bottom: 1px solid var(--nx-border);
	margin-bottom: 24px;
}
.nx-page-header .titles {
	display: flex;
	flex-direction: column;
	gap: 4px;
	min-width: 0;
}
.nx-page-header .lede {
	font-size: var(--nx-text-sm);
	color: var(--nx-fg-muted);
	margin: 0;
}
.nx-page-header .actions {
	display: flex;
	gap: 8px;
	flex-shrink: 0;
}

/* ---------- Empty state ---------- */
.nx-empty {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	gap: 12px;
	padding: 60px 32px;
	color: var(--nx-fg-muted);
}
.nx-empty-art {
	width: 56px;
	height: 56px;
	border-radius: var(--nx-radius-lg);
	background: var(--nx-bg-inset);
	display: grid;
	place-items: center;
	color: var(--nx-fg-muted);
}
.nx-empty h3 {
	font-size: var(--nx-text-lg);
	font-weight: 600;
	color: var(--nx-fg);
	margin: 0;
}
.nx-empty p {
	margin: 0;
	font-size: var(--nx-text-sm);
	max-width: 36ch;
}

/* ---------- Skeletons ---------- */
.nx-skel {
	background: linear-gradient(
		90deg,
		var(--nx-bg-inset) 0%,
		color-mix(in srgb, var(--nx-fg) 4%, var(--nx-bg-inset)) 50%,
		var(--nx-bg-inset) 100%
	);
	background-size: 200% 100%;
	animation: nx-shimmer 1.6s linear infinite;
	border-radius: var(--nx-radius-md);
}
@keyframes nx-shimmer {
	from {
		background-position: 200% 0;
	}
	to {
		background-position: -200% 0;
	}
}

/* ---------- Toast ---------- */
.nx-toast-host {
	position: fixed;
	top: 16px;
	right: 16px;
	z-index: var(--nx-z-toast);
	display: flex;
	flex-direction: column;
	gap: 8px;
	pointer-events: none;
	width: 360px;
	max-width: calc(100vw - 32px);
}
.nx-toast {
	pointer-events: auto;
	background: var(--nx-bg-elevated);
	color: var(--nx-fg);
	padding: 12px 14px;
	border-radius: var(--nx-radius-md);
	border: 1px solid var(--nx-border);
	box-shadow: var(--nx-shadow-lg);
	display: grid;
	grid-template-columns: auto 1fr auto;
	align-items: center;
	gap: 10px;
	font-size: var(--nx-text-sm);
	animation: nx-toast-in var(--nx-dur-slow) var(--nx-step-curve);
	cursor: pointer;
	font-family: inherit;
	text-align: left;
	width: 100%;
}
@keyframes nx-toast-in {
	from {
		opacity: 0;
		transform: translateY(-8px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}
.nx-toast .icon {
	width: 32px;
	height: 32px;
	border-radius: var(--nx-radius-md);
	display: grid;
	place-items: center;
	flex-shrink: 0;
	background: var(--nx-accent-soft);
	color: var(--nx-accent);
}
.nx-toast .body {
	min-width: 0;
}
.nx-toast .title {
	font-weight: 600;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}
.nx-toast .msg {
	color: var(--nx-fg-muted);
	font-size: var(--nx-text-xs);
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
	margin-top: 2px;
}
.nx-toast .close {
	border: none;
	background: transparent;
	color: var(--nx-fg-muted);
	cursor: pointer;
	width: 24px;
	height: 24px;
	display: grid;
	place-items: center;
	border-radius: var(--nx-radius-sm);
}
.nx-toast .close:hover {
	background: var(--nx-bg-inset);
	color: var(--nx-fg);
}

@media (max-width: 640px) {
	.nx-toast-host {
		top: auto;
		bottom: 80px;
		left: 16px;
		right: 16px;
		width: auto;
	}
}

/* ---------- Modal ---------- */
.nx-modal-bg {
	position: fixed;
	inset: 0;
	background: var(--nx-bg-overlay);
	-webkit-backdrop-filter: blur(4px);
	backdrop-filter: blur(4px);
	z-index: var(--nx-z-modal);
	display: grid;
	place-items: center;
	padding: 24px;
	animation: nx-fade-in var(--nx-dur-base) var(--nx-soft-curve);
}
@keyframes nx-fade-in {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}
.nx-modal {
	background: var(--nx-bg-elevated);
	border: 1px solid var(--nx-border);
	border-radius: var(--nx-radius-xl);
	box-shadow: var(--nx-shadow-xl);
	max-width: 420px;
	width: 100%;
	padding: 28px;
	display: flex;
	flex-direction: column;
	gap: 16px;
	animation: nx-modal-in var(--nx-dur-slow) var(--nx-step-curve);
}
@keyframes nx-modal-in {
	from {
		opacity: 0;
		transform: scale(0.96);
	}
	to {
		opacity: 1;
		transform: scale(1);
	}
}
.nx-modal-headline {
	font-family: var(--nx-font-display);
	font-size: var(--nx-text-2xl);
	font-weight: 600;
	letter-spacing: -0.02em;
	line-height: 1.15;
	margin: 0;
}
.nx-modal-sub {
	color: var(--nx-fg-muted);
	font-size: var(--nx-text-sm);
	margin: 0;
	line-height: 1.5;
}
.nx-modal-actions {
	display: flex;
	flex-direction: column;
	gap: 8px;
	margin-top: 8px;
}