/**
 * YOLO PUSH Design System
 *
 * A modern, accessible design system for software founders
 */

:root {
	/* Colors - Brand (Green — matches logo) */
	--fs-color-primary: #22c55e;
	--fs-color-primary-hover: #16a34a;
	--fs-color-primary-active: #15803d;
	--fs-color-primary-light: rgba(34, 197, 94, 0.15);
	--fs-color-primary-foreground: #ffffff;

	/* Colors - Secondary */
	--fs-color-secondary: #f4f4f5;
	--fs-color-secondary-hover: #e4e4e7;
	--fs-color-secondary-foreground: #18181b;

	/* Colors - Accent */
	--fs-color-accent: #f4f4f5;
	--fs-color-accent-foreground: #18181b;

	/* Colors - Semantic */
	--fs-color-success: #10b981;
	--fs-color-success-light: #ecfdf5;
	--fs-color-warning: #f59e0b;
	--fs-color-warning-light: #fffbeb;
	--fs-color-error: #ef4444;
	--fs-color-error-light: #fef2f2;
	--fs-color-error-foreground: #ffffff;
	--fs-color-info: #3b82f6;
	--fs-color-info-light: #eff6ff;

	/* Colors - Neutral (Zinc scale — truly neutral, no blue tint) */
	--fs-color-bg: #ffffff;
	--fs-color-bg-subtle: #fafafa;
	--fs-color-bg-muted: #f4f4f5;
	--fs-color-border: #e4e4e7;
	--fs-color-border-strong: #d4d4d8;
	--fs-color-text: #09090b;
	--fs-color-text-muted: #71717a;
	--fs-color-text-subtle: #a1a1aa;

	/* Colors - Component surfaces */
	--fs-color-card: #ffffff;
	--fs-color-card-foreground: #09090b;
	--fs-color-popover: #ffffff;
	--fs-color-popover-foreground: #09090b;

	/* Colors - Interactive */
	--fs-color-input: #e4e4e7;
	--fs-color-ring: #22c55e;

	/* Gradients - Semantic surfaces */
	--fs-gradient-hero: linear-gradient(135deg, #10b981 0%, #0d9488 35%, #22c55e 65%, #16a34a 100%);
	--fs-gradient-hero-alt: linear-gradient(135deg, #0ea5e9 0%, #22c55e 35%, #10b981 65%, #0d9488 100%);
	--fs-gradient-callout: linear-gradient(
		135deg,
		rgba(34, 197, 94, 0.06) 0%,
		var(--fs-color-bg-subtle) 50%,
		rgba(16, 185, 129, 0.08) 100%
	);
	--fs-gradient-avatar: linear-gradient(135deg, #22c55e, #10b981);
	--fs-gradient-cover: linear-gradient(to right, #22c55e, #10b981);
	--fs-gradient-cover-overlay: linear-gradient(to right, rgba(34, 197, 94, 0.8), rgba(16, 185, 129, 0.8));
	--fs-gradient-badge: linear-gradient(135deg, rgba(34, 197, 94, 0.15), rgba(16, 185, 129, 0.15));
	--fs-gradient-accent: linear-gradient(135deg, var(--fs-color-primary), #10b981);
	--fs-gradient-decorative: linear-gradient(135deg, #10b981, #06b6d4);

	/* Typography */
	--fs-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
	--fs-font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;

	/* Spacing */
	--fs-spacing-xs: 0.25rem;
	--fs-spacing-sm: 0.5rem;
	--fs-spacing-md: 1rem;
	--fs-spacing-lg: 1.5rem;
	--fs-spacing-xl: 2rem;
	--fs-spacing-2xl: 3rem;

	/* Border Radius */
	--fs-radius-sm: 0.375rem;
	--fs-radius-md: 0.5rem;
	--fs-radius-lg: 0.75rem;
	--fs-radius-xl: 1rem;
	--fs-radius-full: 9999px;

	/* Shadows */
	--fs-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
	--fs-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
	--fs-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
	--fs-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

	/* Transitions */
	--fs-transition-fast: 150ms ease;
	--fs-transition-normal: 200ms ease;
	--fs-transition-slow: 300ms ease;
}

/* Dark mode - via user preference class */
:root.dark {
	--fs-color-bg: #09090b;
	--fs-color-bg-subtle: #18181b;
	--fs-color-bg-muted: #27272a;
	--fs-color-border: #27272a;
	--fs-color-border-strong: #3f3f46;
	--fs-color-text: #fafafa;
	--fs-color-text-muted: #a1a1aa;
	--fs-color-text-subtle: #71717a;
	--fs-color-primary-light: rgba(34, 197, 94, 0.15);

	/* Dark - Secondary */
	--fs-color-secondary: #27272a;
	--fs-color-secondary-hover: #3f3f46;
	--fs-color-secondary-foreground: #fafafa;

	/* Dark - Accent */
	--fs-color-accent: #27272a;
	--fs-color-accent-foreground: #fafafa;

	/* Dark - Component surfaces */
	--fs-color-card: #09090b;
	--fs-color-card-foreground: #fafafa;
	--fs-color-popover: #09090b;
	--fs-color-popover-foreground: #fafafa;

	/* Dark - Interactive */
	--fs-color-input: #27272a;
	--fs-color-ring: #22c55e;

	/* Dark - Gradients */
	--fs-gradient-callout: linear-gradient(
		135deg,
		rgba(34, 197, 94, 0.08) 0%,
		var(--fs-color-bg-subtle) 50%,
		rgba(16, 185, 129, 0.1) 100%
	);
	--fs-gradient-cover-overlay: linear-gradient(to right, rgba(34, 197, 94, 0.7), rgba(16, 185, 129, 0.7));
	--fs-gradient-badge: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(16, 185, 129, 0.2));
}

/* Light mode - explicit class (already default, but makes Tailwind dark: work) */
:root.light {
	color-scheme: light;
}

/* System preference fallback - only when no explicit theme class */
@media (prefers-color-scheme: dark) {
	:root:not(.light):not(.dark) {
		--fs-color-bg: #09090b;
		--fs-color-bg-subtle: #18181b;
		--fs-color-bg-muted: #27272a;
		--fs-color-border: #27272a;
		--fs-color-border-strong: #3f3f46;
		--fs-color-text: #fafafa;
		--fs-color-text-muted: #a1a1aa;
		--fs-color-text-subtle: #71717a;
		--fs-color-primary-light: rgba(34, 197, 94, 0.15);

		/* System dark - Secondary */
		--fs-color-secondary: #27272a;
		--fs-color-secondary-hover: #3f3f46;
		--fs-color-secondary-foreground: #fafafa;

		/* System dark - Accent */
		--fs-color-accent: #27272a;
		--fs-color-accent-foreground: #fafafa;

		/* System dark - Component surfaces */
		--fs-color-card: #09090b;
		--fs-color-card-foreground: #fafafa;
		--fs-color-popover: #09090b;
		--fs-color-popover-foreground: #fafafa;

		/* System dark - Interactive */
		--fs-color-input: #27272a;
		--fs-color-ring: #22c55e;

		/* System dark - Gradients */
		--fs-gradient-callout: linear-gradient(
			135deg,
			rgba(34, 197, 94, 0.08) 0%,
			var(--fs-color-bg-subtle) 50%,
			rgba(16, 185, 129, 0.1) 100%
		);
		--fs-gradient-cover-overlay: linear-gradient(to right, rgba(34, 197, 94, 0.7), rgba(16, 185, 129, 0.7));
		--fs-gradient-badge: linear-gradient(135deg, rgba(34, 197, 94, 0.2), rgba(16, 185, 129, 0.2));
	}
}

/* Base styles */
*,
*::before,
*::after {
	box-sizing: border-box;
}

body {
	font-family: var(--fs-font-sans);
	color: var(--fs-color-text);
	background-color: var(--fs-color-bg);
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
}

/* ============================================
   BUTTON COMPONENT
   ============================================ */

.fs-button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--fs-spacing-sm);
	font-family: var(--fs-font-sans);
	font-weight: 500;
	border: none;
	border-radius: var(--fs-radius-md);
	cursor: pointer;
	transition: all var(--fs-transition-fast);
	position: relative;
}

.fs-button:disabled {
	opacity: 0.5;
	cursor: not-allowed;
}

.fs-button:focus-visible {
	outline: 2px solid var(--fs-color-primary);
	outline-offset: 2px;
}

/* Button sizes */
.fs-button--sm {
	height: 2rem;
	padding: 0 var(--fs-spacing-sm);
	font-size: 0.875rem;
}

.fs-button--md {
	height: 2.5rem;
	padding: 0 var(--fs-spacing-md);
	font-size: 0.875rem;
}

.fs-button--lg {
	height: 3rem;
	padding: 0 var(--fs-spacing-lg);
	font-size: 1rem;
}

/* Button variants */
.fs-button--primary {
	background: var(--fs-color-primary);
	color: white;
}

.fs-button--primary:hover:not(:disabled) {
	background: var(--fs-color-primary-hover);
}

.fs-button--primary:active:not(:disabled) {
	background: var(--fs-color-primary-active);
}

.fs-button--secondary {
	background: var(--fs-color-bg-muted);
	color: var(--fs-color-text);
}

.fs-button--secondary:hover:not(:disabled) {
	background: var(--fs-color-border);
}

.fs-button--outline {
	background: transparent;
	border: 1px solid var(--fs-color-border);
	color: var(--fs-color-text);
}

.fs-button--outline:hover:not(:disabled) {
	background: var(--fs-color-bg-subtle);
	border-color: var(--fs-color-border-strong);
}

.fs-button--ghost {
	background: transparent;
	color: var(--fs-color-text);
}

.fs-button--ghost:hover:not(:disabled) {
	background: var(--fs-color-bg-muted);
}

.fs-button--destructive {
	background: var(--fs-color-error);
	color: white;
}

.fs-button--destructive:hover:not(:disabled) {
	background: #dc2626;
}

/* Button loading state */
.fs-button--loading {
	cursor: wait;
}

.fs-button__content--hidden {
	visibility: hidden;
}

.fs-button__spinner {
	position: absolute;
	width: 1em;
	height: 1em;
}

.fs-spinner {
	animation: fs-spin 1s linear infinite;
}

.fs-spinner__track {
	stroke: currentColor;
	opacity: 0.25;
}

.fs-spinner__progress {
	stroke: currentColor;
	stroke-dasharray: 60 200;
	stroke-linecap: round;
}

@keyframes fs-spin {
	from {
		transform: rotate(0deg);
	}

	to {
		transform: rotate(360deg);
	}
}

/* ============================================
   CARD COMPONENT
   ============================================ */

.fs-card {
	background: var(--fs-color-bg);
	border-radius: var(--fs-radius-lg);
	overflow: hidden;
}

.fs-card--default {
	border: 1px solid var(--fs-color-border);
}

.fs-card--elevated {
	box-shadow: var(--fs-shadow-md);
}

.fs-card--bordered {
	border: 2px solid var(--fs-color-border-strong);
}

.fs-card__header {
	padding: var(--fs-spacing-lg);
	border-bottom: 1px solid var(--fs-color-border);
}

.fs-card__content {
	padding: var(--fs-spacing-lg);
}

.fs-card__footer {
	display: flex;
	align-items: center;
	gap: var(--fs-spacing-sm);
	padding: var(--fs-spacing-lg);
	border-top: 1px solid var(--fs-color-border);
	background: var(--fs-color-bg-subtle);
}

/* ============================================
   INPUT COMPONENT
   ============================================ */

.fs-input-wrapper {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-xs);
}

.fs-input__label {
	font-size: 0.875rem;
	font-weight: 500;
	color: var(--fs-color-text);
}

.fs-input {
	height: 2.5rem;
	padding: 0 var(--fs-spacing-sm);
	font-family: var(--fs-font-sans);
	font-size: 0.875rem;
	color: var(--fs-color-text);
	background: var(--fs-color-bg);
	border: 1px solid var(--fs-color-border);
	border-radius: var(--fs-radius-md);
	transition: all var(--fs-transition-fast);
}

.fs-input:hover {
	border-color: var(--fs-color-border-strong);
}

.fs-input:focus {
	outline: none;
	border-color: var(--fs-color-primary);
	box-shadow: 0 0 0 3px var(--fs-color-primary-light);
}

.fs-input--error {
	border-color: var(--fs-color-error);
}

.fs-input--error:focus {
	box-shadow: 0 0 0 3px var(--fs-color-error-light);
}

.fs-input::placeholder {
	color: var(--fs-color-text-subtle);
}

.fs-input__error {
	font-size: 0.75rem;
	color: var(--fs-color-error);
	margin: 0;
}

.fs-input__hint {
	font-size: 0.75rem;
	color: var(--fs-color-text-muted);
	margin: 0;
}

/* ============================================
   AVATAR COMPONENT
   ============================================ */

.fs-avatar {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	border-radius: var(--fs-radius-full);
	background: var(--fs-color-primary-light);
	color: var(--fs-color-primary);
	font-weight: 600;
	overflow: hidden;
	flex-shrink: 0;
}

.fs-avatar--sm {
	width: 2rem;
	height: 2rem;
	font-size: 0.75rem;
}

.fs-avatar--md {
	width: 2.5rem;
	height: 2.5rem;
	font-size: 0.875rem;
}

.fs-avatar--lg {
	width: 3rem;
	height: 3rem;
	font-size: 1rem;
}

.fs-avatar--xl {
	width: 4rem;
	height: 4rem;
	font-size: 1.25rem;
}

.fs-avatar__image {
	width: 100%;
	height: 100%;
	object-fit: cover;
}

.fs-avatar__fallback {
	text-transform: uppercase;
}

/* ============================================
   BADGE COMPONENT
   ============================================ */

.fs-badge {
	display: inline-flex;
	align-items: center;
	font-weight: 500;
	border-radius: var(--fs-radius-full);
}

.fs-badge--sm {
	padding: 0.125rem 0.5rem;
	font-size: 0.75rem;
}

.fs-badge--md {
	padding: 0.25rem 0.75rem;
	font-size: 0.875rem;
}

.fs-badge--default {
	background: var(--fs-color-bg-muted);
	color: var(--fs-color-text);
}

.fs-badge--success {
	background: var(--fs-color-success-light);
	color: var(--fs-color-success);
}

.fs-badge--warning {
	background: var(--fs-color-warning-light);
	color: var(--fs-color-warning);
}

.fs-badge--error {
	background: var(--fs-color-error-light);
	color: var(--fs-color-error);
}

.fs-badge--info {
	background: var(--fs-color-info-light);
	color: var(--fs-color-info);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.fs-container {
	width: 100%;
	max-width: 1200px;
	margin: 0 auto;
	padding: 0 var(--fs-spacing-md);
}

.fs-stack {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-md);
}

.fs-row {
	display: flex;
	gap: var(--fs-spacing-md);
	align-items: center;
}

.fs-text-muted {
	color: var(--fs-color-text-muted);
}

.fs-text-subtle {
	color: var(--fs-color-text-subtle);
}

/* ============================================
   APP HEADER COMPONENT
   ============================================ */

.fs-app-header {
	background: var(--fs-color-bg);
	border-bottom: 1px solid var(--fs-color-border);
	padding: var(--fs-spacing-md) 0;
	position: sticky;
	top: 0;
	z-index: 10;
}

.fs-app-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.fs-app-header__logo {
	font-size: 1.25rem;
	font-weight: 700;
	color: var(--fs-color-text);
	text-decoration: none;
}

.fs-app-header__logo:hover {
	color: var(--fs-color-primary);
}

.fs-app-header__actions {
	display: flex;
	align-items: center;
	gap: var(--fs-spacing-sm);
}

/* ============================================
   DASHBOARD SHELL LAYOUT
   ============================================ */

.fs-dashboard-shell {
	padding: var(--fs-spacing-lg) 0;
	min-height: calc(100vh - 60px);
}

.fs-dashboard-shell__grid {
	display: grid;
	grid-template-columns: 280px 1fr;
	gap: var(--fs-spacing-lg);
}

.fs-dashboard-shell__sidebar {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-md);
}

.fs-dashboard-shell__content {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-lg);
}

@media (max-width: 768px) {
	.fs-dashboard-shell__grid {
		grid-template-columns: 1fr;
	}
}

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */

.fs-sidebar-nav {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-xs);
}

.fs-nav-item {
	display: flex;
	align-items: center;
	gap: var(--fs-spacing-sm);
	padding: var(--fs-spacing-sm) var(--fs-spacing-md);
	border-radius: var(--fs-radius-md);
	color: var(--fs-color-text);
	text-decoration: none;
	font-weight: 500;
	transition: background var(--fs-transition-fast);
}

.fs-nav-item:hover {
	background: var(--fs-color-bg-muted);
}

.fs-nav-item--active {
	background: var(--fs-color-primary-light);
	color: var(--fs-color-primary);
}

.fs-nav-item__icon {
	flex-shrink: 0;
}

/* ============================================
   PROFILE CARD
   ============================================ */

.fs-profile-card {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
}

.fs-profile-card__name {
	font-size: 1.25rem;
	font-weight: 600;
	margin: var(--fs-spacing-sm) 0 0 0;
}

.fs-profile-card__handler {
	color: var(--fs-color-text-muted);
	margin: 0;
}

.fs-profile-card__level {
	display: flex;
	align-items: center;
	gap: var(--fs-spacing-sm);
	margin-top: var(--fs-spacing-sm);
}

.fs-profile-card__xp {
	font-size: 0.875rem;
	color: var(--fs-color-text-muted);
}

.fs-profile-card__stats {
	display: flex;
	gap: var(--fs-spacing-lg);
	margin-top: var(--fs-spacing-md);
	padding-top: var(--fs-spacing-md);
	border-top: 1px solid var(--fs-color-border);
	width: 100%;
	justify-content: center;
}

.fs-profile-card__stat {
	display: flex;
	flex-direction: column;
	align-items: center;
}

.fs-profile-card__stat-value {
	font-size: 1.25rem;
	font-weight: 600;
}

.fs-profile-card__stat-label {
	font-size: 0.75rem;
	color: var(--fs-color-text-muted);
}

/* ============================================
   EMPTY STATE
   ============================================ */

.fs-empty-state {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	padding: var(--fs-spacing-xl);
}

.fs-empty-state__icon {
	font-size: 3rem;
	margin-bottom: var(--fs-spacing-md);
}

.fs-empty-state__title {
	font-size: 1.25rem;
	margin: 0 0 var(--fs-spacing-sm) 0;
}

.fs-empty-state__description {
	color: var(--fs-color-text-muted);
	margin: 0 0 var(--fs-spacing-lg) 0;
	max-width: 300px;
}

/* ============================================
   QUICK ACTIONS GRID
   ============================================ */

.fs-quick-actions {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: var(--fs-spacing-md);
}

.fs-quick-action {
	text-align: center;
}

.fs-quick-action__icon {
	font-size: 2rem;
	display: block;
	margin-bottom: var(--fs-spacing-sm);
}

.fs-quick-action__title {
	font-size: 1rem;
	font-weight: 600;
	margin: 0 0 var(--fs-spacing-xs) 0;
}

.fs-quick-action__description {
	font-size: 0.875rem;
	color: var(--fs-color-text-muted);
	margin: 0 0 var(--fs-spacing-md) 0;
}

/* ============================================
   SECTION HEADINGS
   ============================================ */

.fs-section-title {
	font-size: 1.5rem;
	margin: 0;
}

.fs-section-subtitle {
	color: var(--fs-color-text-muted);
	margin: var(--fs-spacing-xs) 0 0 0;
}

.fs-section-heading {
	font-size: 1.125rem;
	margin: 0 0 var(--fs-spacing-md) 0;
}

/* ============================================
   PAGE BACKGROUNDS
   ============================================ */

.fs-page {
	min-height: 100vh;
	background: var(--fs-color-bg-subtle);
}

.fs-page--centered {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	padding: var(--fs-spacing-lg);
}

/* ============================================
   SETTINGS PAGE SPECIFIC
   ============================================ */

.fs-settings-content {
	max-width: 700px;
	margin: 0 auto;
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-lg);
}

.fs-settings-title {
	font-size: 1.5rem;
	margin: 0;
}

.fs-settings-section-title {
	font-size: 1.125rem;
	font-weight: 600;
	margin: 0;
}

.fs-settings-section-description {
	color: var(--fs-color-text-muted);
	margin: var(--fs-spacing-xs) 0 0 0;
	font-size: 0.875rem;
}

.fs-form {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-md);
}

.fs-form-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: var(--fs-spacing-md);
}

.fs-form-actions {
	display: flex;
	justify-content: flex-end;
	padding-top: var(--fs-spacing-sm);
}

.fs-avatar-row {
	display: flex;
	align-items: center;
	gap: var(--fs-spacing-md);
}

.fs-avatar-actions {
	display: flex;
	flex-direction: column;
	gap: var(--fs-spacing-xs);
}

.fs-avatar-hint {
	font-size: 0.75rem;
	color: var(--fs-color-text-muted);
	margin: 0;
}

.fs-divider {
	border: none;
	border-top: 1px solid var(--fs-color-border);
	margin: var(--fs-spacing-lg) 0;
}

.fs-card--danger {
	border: 1px solid var(--fs-color-error);
}

.fs-danger-action {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--fs-spacing-md);
}

.fs-danger-title {
	font-size: 1rem;
	font-weight: 500;
	margin: 0;
}

.fs-danger-description {
	font-size: 0.875rem;
	color: var(--fs-color-text-muted);
	margin: var(--fs-spacing-xs) 0 0 0;
}

@media (max-width: 768px) {
	.fs-form-grid {
		grid-template-columns: 1fr;
	}

	.fs-danger-action {
		flex-direction: column;
		align-items: flex-start;
	}
}

/* ============================================
   SKELETON COMPONENT
   ============================================ */

.fs-skeleton {
	display: block;
	background: linear-gradient(
		90deg,
		var(--fs-color-bg-muted) 25%,
		var(--fs-color-bg-subtle) 50%,
		var(--fs-color-bg-muted) 75%
	);
	background-size: 200% 100%;
	animation: fs-skeleton-shimmer 1.5s infinite ease-in-out;
	border-radius: var(--fs-radius-md);
}

.fs-skeleton--circle {
	border-radius: var(--fs-radius-full);
}

@keyframes fs-skeleton-shimmer {
	0% {
		background-position: 200% 0;
	}

	100% {
		background-position: -200% 0;
	}
}