/* ==========================================================================
   Elite+ Visual Polish Layer v5.0.1
   Purpose: globally elevate aesthetics without breaking existing layouts.
   Applies a refined dark theme, glass surfaces, premium gradients,
   and consistent interactive states across the site.
   ========================================================================== */

/* Base Tokens */
:root {
  color-scheme: dark;

  /* Core palette (fallbacks if tokens.css not present) */
  --vp-bg: var(--color-bg-base, #090b10);
  --vp-surface: var(--color-bg-surface, #11141b);
  --vp-surface-2: var(--color-bg-elevated, #171b24);
  --vp-surface-3: var(--color-bg-muted, #1e2230);
  --vp-border: var(--color-border, rgba(148, 163, 184, 0.16));
  --vp-border-strong: var(--color-border-strong, rgba(148, 163, 184, 0.25));
  --vp-text: var(--color-text-primary, #f8fafc);
  --vp-text-secondary: var(--color-text-secondary, rgba(248, 250, 252, 0.7));
  --vp-text-muted: var(--color-text-muted, rgba(248, 250, 252, 0.5));
  --vp-accent: var(--color-accent, #6366f1);
  --vp-accent-2: #22d3ee;
  --vp-accent-3: #a855f7;
  --vp-success: var(--color-success, #22c55e);
  --vp-warning: var(--color-warning, #f59e0b);
  --vp-error: var(--color-error, #ef4444);

  /* Typography */
  --vp-font-sans: var(--font-family-sans, 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif);
  --vp-font-mono: var(--font-family-mono, 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace);
  --vp-text-xs: 0.75rem;
  --vp-text-sm: 0.875rem;
  --vp-text-base: 1rem;
  --vp-text-lg: 1.125rem;
  --vp-text-xl: 1.25rem;
  --vp-text-2xl: 1.5rem;
  --vp-text-3xl: 2rem;
  --vp-text-4xl: 2.5rem;

  /* Radii */
  --vp-radius-sm: 8px;
  --vp-radius-md: 12px;
  --vp-radius-lg: 16px;
  --vp-radius-xl: 20px;
  --vp-radius-2xl: 28px;
  --vp-radius-full: 9999px;

  /* Shadows */
  --vp-shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.35);
  --vp-shadow-md: 0 10px 24px rgba(0, 0, 0, 0.35);
  --vp-shadow-lg: 0 22px 56px rgba(0, 0, 0, 0.45);
  --vp-glow-accent: 0 0 40px rgba(99, 102, 241, 0.25);
  --vp-glow-cyan: 0 0 40px rgba(34, 211, 238, 0.2);

  /* Surfaces */
  --vp-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  --vp-card: linear-gradient(160deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  --vp-highlight: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(139, 92, 246, 0.08));

  /* Gradients */
  --vp-gradient-hero: radial-gradient(1200px circle at 10% -10%, rgba(99, 102, 241, 0.25), transparent 60%),
                      radial-gradient(900px circle at 90% -20%, rgba(34, 211, 238, 0.2), transparent 55%),
                      radial-gradient(1200px circle at 50% 120%, rgba(168, 85, 247, 0.22), transparent 60%);
  --vp-gradient-accent: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --vp-gradient-cta: linear-gradient(135deg, rgba(99, 102, 241, 0.18), rgba(34, 211, 238, 0.12));

  /* Focus */
  --vp-focus: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* Global reset & base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--vp-bg);
}

body {
  font-family: var(--vp-font-sans);
  color: var(--vp-text);
  background: var(--vp-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: -20%;
  pointer-events: none;
  z-index: -1;
}

body::before {
  background: var(--vp-gradient-hero);
  opacity: 0.7;
}

body::after {
  background: radial-gradient(900px circle at 15% 15%, rgba(99, 102, 241, 0.12), transparent 60%);
  opacity: 0.6;
}

img,
svg,
video {
  max-width: 100%;
  display: block;
}

a {
  color: var(--vp-accent);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  color: #8b5cf6;
}

code,
pre {
  font-family: var(--vp-font-mono);
  background: rgba(148, 163, 184, 0.08);
  border: 1px solid var(--vp-border);
  border-radius: var(--vp-radius-sm);
}

pre {
  padding: 1rem 1.25rem;
  overflow-x: auto;
}

/* Focus rings */
:focus-visible {
  outline: none;
  box-shadow: var(--vp-focus);
  border-radius: var(--vp-radius-sm);
}

/* Buttons */
:where(button, .btn, .button, .cta, .primary-btn, .secondary-btn, .outline-btn, .ghost-btn) {
  border: 1px solid transparent;
  border-radius: var(--vp-radius-md);
  padding: 0.65rem 1.1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  background: var(--vp-gradient-accent);
  color: #fff;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.2s ease, filter 0.2s ease, border-color 0.2s ease;
  box-shadow: var(--vp-shadow-sm);
}

:where(button, .btn, .button, .cta):hover {
  transform: translateY(-1px);
  box-shadow: var(--vp-shadow-md);
  filter: brightness(1.08);
}

:where(button, .btn, .button, .cta):active {
  transform: translateY(0);
  filter: brightness(0.98);
}

:where(.btn-secondary, .secondary-btn, .outline-btn) {
  background: transparent;
  border-color: var(--vp-border);
  color: var(--vp-text);
}

:where(.btn-secondary:hover, .secondary-btn:hover, .outline-btn:hover) {
  border-color: var(--vp-accent);
  box-shadow: var(--vp-glow-accent);
}

:where(.btn-ghost, .ghost-btn) {
  background: rgba(255, 255, 255, 0.04);
  border-color: transparent;
}

:where(.btn-danger, .danger-btn) {
  background: linear-gradient(135deg, #ef4444 0%, #f97316 100%);
}

/* Form fields */
:where(input, select, textarea) {
  width: 100%;
  border: 1px solid var(--vp-border);
  background: rgba(15, 23, 42, 0.5);
  color: var(--vp-text);
  border-radius: var(--vp-radius-md);
  padding: 0.65rem 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

:where(input, select, textarea)::placeholder {
  color: var(--vp-text-muted);
}

:where(input, select, textarea):focus {
  border-color: var(--vp-accent);
  box-shadow: var(--vp-focus);
  background: rgba(15, 23, 42, 0.7);
}

label {
  color: var(--vp-text-secondary);
  font-weight: 600;
}

/* Cards & Surfaces */
:where(.card, .panel, .tile, .box, .module, .feature-card, .pricing-card, .blog-card, .guide-card, .stat-card, .metric-card) {
  background: var(--vp-card);
  border: 1px solid var(--vp-border);
  border-radius: var(--vp-radius-lg);
  box-shadow: var(--vp-shadow-sm);
  backdrop-filter: blur(10px);
}

:where(.card, .panel, .tile, .box, .module):hover {
  border-color: var(--vp-border-strong);
  box-shadow: var(--vp-shadow-md);
}

.vp-glass,
.glass {
  background: var(--vp-glass);
  border: 1px solid var(--vp-border);
  border-radius: var(--vp-radius-lg);
  box-shadow: var(--vp-shadow-sm);
  backdrop-filter: blur(12px);
}

.vp-highlight {
  background: var(--vp-highlight);
  border-radius: var(--vp-radius-lg);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Navigation */
:where(.navbar, .nav, .topbar, .sidebar, .nav-bar) {
  background: rgba(10, 12, 18, 0.7);
  border-bottom: 1px solid var(--vp-border);
  backdrop-filter: blur(10px);
}

:where(.nav-item, .nav-link, .sidebar-item, .menu-item) {
  border-radius: var(--vp-radius-md);
  transition: background 0.2s ease, color 0.2s ease;
}

:where(.nav-item:hover, .nav-link:hover, .sidebar-item:hover, .menu-item:hover) {
  background: rgba(99, 102, 241, 0.12);
  color: #fff;
}

/* Hero & Sections */
.vp-hero,
.hero {
  position: relative;
  padding: clamp(80px, 8vw, 140px) 24px 64px;
}

.vp-hero-title,
.hero-title {
  font-size: clamp(2.4rem, 4vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.vp-hero-subtitle,
.hero-subtitle {
  color: var(--vp-text-secondary);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.vp-section,
.section {
  padding: clamp(40px, 6vw, 100px) 24px;
}

/* Badges / Pills */
.badge,
.pill,
.tag,
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.7rem;
  border-radius: var(--vp-radius-full);
  background: rgba(99, 102, 241, 0.15);
  color: #e5e7eb;
  border: 1px solid rgba(99, 102, 241, 0.2);
  font-size: var(--vp-text-sm);
}

.badge.pro,
.pill.pro {
  background: rgba(0, 240, 255, 0.14);
  border-color: rgba(0, 240, 255, 0.3);
}

.badge.premium,
.pill.premium {
  background: rgba(255, 215, 0, 0.18);
  border-color: rgba(255, 215, 0, 0.3);
  color: #fef3c7;
}

/* KPI / Stats */
.stat,
.stat-card,
.metric,
.kpi {
  padding: 1.25rem;
  border-radius: var(--vp-radius-lg);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(34, 211, 238, 0.08));
  border: 1px solid rgba(99, 102, 241, 0.25);
  box-shadow: var(--vp-shadow-sm);
}

.stat-value,
.kpi-value {
  font-size: 2rem;
  font-weight: 800;
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
}

thead th {
  text-align: left;
  color: var(--vp-text-secondary);
  font-weight: 600;
  padding: 0.75rem;
  border-bottom: 1px solid var(--vp-border);
}

tbody td {
  padding: 0.75rem;
  border-bottom: 1px solid var(--vp-border);
}

tbody tr:hover {
  background: rgba(99, 102, 241, 0.08);
}

/* Modals / Overlays */
.modal,
.dialog,
.popup {
  background: var(--vp-card);
  border: 1px solid var(--vp-border);
  border-radius: var(--vp-radius-xl);
  box-shadow: var(--vp-shadow-lg);
}

.modal-header,
.dialog-header {
  border-bottom: 1px solid var(--vp-border);
}

.modal-footer,
.dialog-footer {
  border-top: 1px solid var(--vp-border);
}

/* Toasts / Alerts */
.toast,
.alert,
.notification {
  background: rgba(20, 24, 34, 0.95);
  border: 1px solid var(--vp-border);
  border-radius: var(--vp-radius-lg);
  box-shadow: var(--vp-shadow-md);
}

.alert-success { border-color: rgba(34, 197, 94, 0.35); }
.alert-warning { border-color: rgba(245, 158, 11, 0.35); }
.alert-error { border-color: rgba(239, 68, 68, 0.35); }

/* Panels / Layout helpers */
.vp-container {
  width: min(1200px, 100% - 48px);
  margin: 0 auto;
}

.vp-grid {
  display: grid;
  gap: 1.5rem;
}

.vp-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.vp-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.vp-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 1024px) {
  .vp-grid-3,
  .vp-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .vp-grid-2,
  .vp-grid-3,
  .vp-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Background utilities */
.vp-gradient-border {
  position: relative;
}

.vp-gradient-border::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.6), rgba(34, 211, 238, 0.4), rgba(168, 85, 247, 0.5));
  z-index: -1;
}

.vp-soft-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.3), transparent);
}

/* Improve common containers */
:where(.content, .content-wrapper, .page, .page-content) {
  position: relative;
}

/* Accent text */
.vp-gradient-text {
  background: var(--vp-gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Elevate inputs inside cards */
:where(.card, .panel, .tile, .box) :where(input, select, textarea) {
  background: rgba(8, 12, 20, 0.6);
}

/* Scrollbars */
*::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

*::-webkit-scrollbar-track {
  background: rgba(15, 23, 42, 0.6);
}

*::-webkit-scrollbar-thumb {
  background: rgba(99, 102, 241, 0.35);
  border-radius: 10px;
  border: 2px solid rgba(15, 23, 42, 0.6);
}

*::-webkit-scrollbar-thumb:hover {
  background: rgba(99, 102, 241, 0.55);
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}