/**
 * R6 Tracker — Premium Design System
 *
 * Milestone 1: WordPress architecture + design system.
 * Exact color palette, typography, spacing, and component primitives.
 * Loaded by R6 Tracker Core; extended by the R6 Tracker Pro theme.
 *
 * @package R6_Tracker_Core
 * @version 1.0.0
 */

/* --------------------------------------------------------------------------
 * 1. Design tokens
 * -------------------------------------------------------------------------- */
:root {
	/* Backgrounds */
	--r6-bg: #0B0F19;            /* Midnight Black */
	--r6-bg-secondary: #111827;  /* Deep Navy */
	--r6-card: #161D2B;          /* Slate Surface */
	--r6-card-elevated: #1E293B; /* Elevated Surface */

	/* Accents */
	--r6-accent: #E63946;        /* Tactical Red */
	--r6-accent-hover: #C92C39;  /* Deep Tactical Red */
	--r6-cyan: #00D4FF;          /* Electric Cyan */
	--r6-cyan-hover: #00B8DB;

	/* Text */
	--r6-text: #F8FAFC;          /* Ice White */
	--r6-text-secondary: #CBD5E1;
	--r6-text-muted: #94A3B8;

	/* Borders & status */
	--r6-border: #334155;
	--r6-success: #22C55E;
	--r6-warning: #F59E0B;
	--r6-error: #EF4444;
	--r6-info: #38BDF8;

	/* Typography */
	--r6-font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	--r6-font-headline: "Rajdhani", "Inter", sans-serif;
	--r6-font-mono: "JetBrains Mono", ui-monospace, monospace;

	/* Spacing (8px base) */
	--r6-space-1: 8px;
	--r6-space-2: 16px;
	--r6-space-3: 24px;
	--r6-space-4: 32px;
	--r6-space-5: 40px;
	--r6-space-6: 48px;
	--r6-space-8: 64px;

	/* Radius */
	--r6-radius-card: 16px;
	--r6-radius-card-sm: 12px;
	--r6-radius-button: 10px;

	/* Motion */
	--r6-transition: 150ms ease-in-out;
	--r6-transition-slow: 250ms ease-in-out;
}

/* --------------------------------------------------------------------------
 * 2. Base
 * -------------------------------------------------------------------------- */
.r6-scope,
.r6-scope body {
	background-color: var(--r6-bg);
	color: var(--r6-text-secondary);
	font-family: var(--r6-font-body);
	line-height: 1.6;
}

.r6-scope h1,
.r6-scope h2,
.r6-scope h3,
.r6-scope h4 {
	font-family: var(--r6-font-headline);
	color: var(--r6-text);
	font-weight: 700;
	line-height: 1.2;
	letter-spacing: 0.01em;
}

.r6-data,
.r6-scope .r6-stat-value {
	font-family: var(--r6-font-mono);
}

/* --------------------------------------------------------------------------
 * 3. Cards
 * -------------------------------------------------------------------------- */
.r6-card {
	background: var(--r6-card);
	border: 1px solid var(--r6-border);
	border-radius: var(--r6-radius-card);
	padding: var(--r6-space-3);
	box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
	transition: transform var(--r6-transition), box-shadow var(--r6-transition-slow), border-color var(--r6-transition);
}

.r6-card:hover {
	transform: translateY(-2px);
	border-color: var(--r6-accent);
	box-shadow: 0 8px 24px rgba(230, 57, 70, 0.18);
}

.r6-card-elevated {
	background: var(--r6-card-elevated);
}

.r6-card-title {
	font-family: var(--r6-font-headline);
	color: var(--r6-text);
	font-size: 1.25rem;
	margin: 0 0 var(--r6-space-1);
}

.r6-card-meta {
	color: var(--r6-text-muted);
	font-size: 0.85rem;
}

/* --------------------------------------------------------------------------
 * 4. Buttons
 * -------------------------------------------------------------------------- */
.r6-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	border-radius: var(--r6-radius-button);
	padding: 12px 24px;
	font-family: var(--r6-font-headline);
	font-weight: 600;
	font-size: 1rem;
	letter-spacing: 0.02em;
	border: 1px solid transparent;
	cursor: pointer;
	min-height: 44px;
	transition: background var(--r6-transition), border-color var(--r6-transition), transform var(--r6-transition);
	text-decoration: none;
}

.r6-btn:focus-visible {
	outline: 2px solid var(--r6-cyan);
	outline-offset: 2px;
}

.r6-btn-primary {
	background: var(--r6-accent);
	color: #fff;
}

.r6-btn-primary:hover {
	background: var(--r6-accent-hover);
	transform: translateY(-1px);
}

.r6-btn-secondary {
	background: transparent;
	border-color: var(--r6-cyan);
	color: var(--r6-cyan);
}

.r6-btn-secondary:hover {
	background: rgba(0, 212, 255, 0.12);
}

.r6-btn:disabled {
	opacity: 0.5;
	cursor: not-allowed;
	transform: none;
}

/* --------------------------------------------------------------------------
 * 5. Forms
 * -------------------------------------------------------------------------- */
.r6-field label {
	display: block;
	color: var(--r6-text);
	font-weight: 600;
	margin-bottom: 6px;
	font-size: 0.9rem;
}

.r6-field input[type="text"],
.r6-field input[type="number"],
.r6-field input[type="search"],
.r6-field select {
	width: 100%;
	background: var(--r6-bg-secondary);
	border: 1px solid var(--r6-border);
	border-radius: var(--r6-radius-button);
	color: var(--r6-text);
	padding: 12px 14px;
	font-size: 1rem;
	min-height: 44px;
	transition: border-color var(--r6-transition);
}

.r6-field input:focus,
.r6-field select:focus {
	border-color: var(--r6-cyan);
	outline: none;
	box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.25);
}

.r6-field-error {
	color: var(--r6-error);
	font-size: 0.85rem;
	margin-top: 6px;
}

/* --------------------------------------------------------------------------
 * 6. Tables
 * -------------------------------------------------------------------------- */
.r6-table-wrap {
	overflow-x: auto;
	border: 1px solid var(--r6-border);
	border-radius: var(--r6-radius-card-sm);
}

.r6-table {
	width: 100%;
	border-collapse: collapse;
	background: var(--r6-card);
	font-size: 0.95rem;
}

.r6-table th {
	background: var(--r6-bg-secondary);
	color: var(--r6-text);
	font-family: var(--r6-font-headline);
	text-align: left;
	padding: 12px 16px;
	white-space: nowrap;
}

.r6-table td {
	padding: 12px 16px;
	border-top: 1px solid var(--r6-border);
	color: var(--r6-text-secondary);
}

.r6-table tr:hover td {
	background: rgba(0, 212, 255, 0.04);
}

/* --------------------------------------------------------------------------
 * 7. Status indicators (use sparingly, meaningful only)
 * -------------------------------------------------------------------------- */
.r6-badge {
	display: inline-flex;
	align-items: center;
	gap: 6px;
	padding: 4px 12px;
	border-radius: 999px;
	font-size: 0.8rem;
	font-weight: 600;
}

.r6-badge-success { background: rgba(34, 197, 94, 0.15); color: var(--r6-success); }
.r6-badge-warning { background: rgba(245, 158, 11, 0.15); color: var(--r6-warning); }
.r6-badge-error   { background: rgba(239, 68, 68, 0.15);  color: var(--r6-error); }
.r6-badge-info    { background: rgba(56, 189, 248, 0.15);  color: var(--r6-info); }
.r6-badge-cyan    { background: rgba(0, 212, 255, 0.12);   color: var(--r6-cyan); }

/* --------------------------------------------------------------------------
 * 8. Skeleton loading
 * -------------------------------------------------------------------------- */
.r6-skeleton {
	background: linear-gradient(90deg, var(--r6-card) 25%, var(--r6-card-elevated) 50%, var(--r6-card) 75%);
	background-size: 200% 100%;
	animation: r6-shimmer 1.4s infinite;
	border-radius: var(--r6-radius-card-sm);
	min-height: 20px;
}

@keyframes r6-shimmer {
	to { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
	.r6-skeleton { animation: none; }
	.r6-card:hover, .r6-btn-primary:hover { transform: none; }
	* { transition-duration: 0.01ms !important; }
}

/* --------------------------------------------------------------------------
 * 9. Layout helpers
 * -------------------------------------------------------------------------- */
.r6-container {
	max-width: 1440px;
	margin: 0 auto;
	padding: 0 var(--r6-space-3);
}

.r6-grid {
	display: grid;
	gap: var(--r6-space-2);
}

@media (min-width: 768px) {
	.r6-grid-2 { grid-template-columns: repeat(2, 1fr); }
	.r6-grid-3 { grid-template-columns: repeat(3, 1fr); }
	.r6-grid-4 { grid-template-columns: repeat(4, 1fr); }
}