/* ========================================================================
   Variables
   ======================================================================== */

:root {
  /* Colors */
  --color-bg: #050509; /* deep near-black */
  --color-surface: #0d0f1a;
  --color-text: #f7f7ff;
  --color-text-muted: #a6b0c3;

  --color-primary: #1ff4ff; /* neon cyan */
  --color-primary-soft: rgba(31, 244, 255, 0.12);

  --color-accent-red: #ff3150; /* lava red */
  --color-accent-gold: #ffd447; /* pixel gold */
  --color-accent-teal: #26f0a8; /* retro teal */

  --color-success: #26f0a8;
  --color-warning: #ffd447;
  --color-danger: #ff3150;

  /* Neutral grays for UI elements (on dark bg) */
  --gray-50: #f8fafc;
  --gray-100: #e2e8f0;
  --gray-200: #cbd5f5;
  --gray-300: #94a3b8;
  --gray-400: #64748b;
  --gray-500: #475569;
  --gray-600: #334155;
  --gray-700: #1e293b;
  --gray-800: #0f172a;
  --gray-900: #020617;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Press Start 2P", "Pixel Operator", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;  /* 18px */
  --font-size-xl: 1.25rem;   /* 20px */
  --font-size-2xl: 1.5rem;   /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem;  /* 36px */

  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radius: slightly pixel-ish, mostly sharp with small rounding */
  --radius-none: 0;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;

  /* Shadows (glow-inspired for neon UI) */
  --shadow-soft: 0 0 0 1px rgba(255, 255, 255, 0.02), 0 8px 24px rgba(0, 0, 0, 0.75);
  --shadow-neon-cyan: 0 0 0 1px rgba(31, 244, 255, 0.32), 0 0 18px rgba(31, 244, 255, 0.45);
  --shadow-neon-red: 0 0 0 1px rgba(255, 49, 80, 0.28), 0 0 18px rgba(255, 49, 80, 0.5);

  /* Transitions & motion */
  --duration-fast: 120ms;
  --duration-normal: 200ms;
  --duration-slow: 320ms;
  --ease-standard: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --duration-fast: 0.01ms;
    --duration-normal: 0.01ms;
    --duration-slow: 0.01ms;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ========================================================================
   Reset / Normalize
   ======================================================================== */

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

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  padding: 0;
  background: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
}

p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* ========================================================================
   Base
   ======================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  min-height: 60vh;
}

/* Headings: neo-retro, bold, with subtle glow */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--space-4);
}

h1 {
  font-size: clamp(1.9rem, 3vw, var(--font-size-4xl));
  text-shadow: 0 0 10px rgba(31, 244, 255, 0.7);
}

h2 {
  font-size: clamp(1.5rem, 2.4vw, var(--font-size-3xl));
  text-shadow: 0 0 8px rgba(31, 244, 255, 0.6);
}

h3 {
  font-size: clamp(1.25rem, 1.8vw, var(--font-size-2xl));
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-md);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-muted);
}

strong,
b {
  font-weight: 600;
  color: var(--color-text);
}

code,
pre {
  font-family: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

pre {
  margin: 0 0 var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: radial-gradient(circle at top left, rgba(31, 244, 255, 0.12), transparent 60%),
    #05060d;
  overflow-x: auto;
}

/* Links: neon accent, no default underline */

a {
  color: var(--color-primary);
  text-decoration: none;
  position: relative;
  transition: color var(--duration-normal) var(--ease-standard),
    text-shadow var(--duration-normal) var(--ease-standard);
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent-gold));
  transform-origin: left;
  transform: scaleX(0);
  transition: transform var(--duration-fast) var(--ease-standard);
}

a:hover::after,
a:focus-visible::after {
  transform: scaleX(1);
}

hr {
  border: none;
  height: 1px;
  margin: var(--space-8) 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.32), transparent);
}

/* Tables for charts/info blocks */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
}

thead {
  background: rgba(15, 23, 42, 0.9);
}

th,
td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

th {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent-gold);
  text-align: left;
}

tr:nth-child(even) td {
  background: radial-gradient(circle at left, rgba(31, 244, 255, 0.02), transparent 60%);
}

/* ========================================================================
   Accessibility & Focus
   ======================================================================== */

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 3px;
}

/* ========================================================================
   Utilities
   ======================================================================== */

/* Layout containers */

.container {
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1200px;
}

@media (min-width: 1280px) {
  .container {
    max-width: 1320px;
  }
}

.section {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

/* Flex helpers */

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-row {
  flex-direction: row;
}

.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

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

.gap-4 {
  gap: var(--space-4);
}

.gap-6 {
  gap: var(--space-6);
}

/* Grid helpers */

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Alignment & text helpers */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

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

/* Screen reader only */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Simple spacing utils */

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* ========================================================================
   Components
   ======================================================================== */

/* Buttons: arcadey, high-contrast, keyboard-friendly */

.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  --btn-bg: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-teal) 45%, var(--color-accent-gold) 100%);
  --btn-text: #050509;
  --btn-border: rgba(15, 23, 42, 0.9);

  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-xs);
  border: 1px solid var(--btn-border);
  background-image: var(--btn-bg);
  color: var(--btn-text);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  text-decoration: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.8), 0 0 16px rgba(31, 244, 255, 0.6);
  transform: translateY(0);
  transition: transform var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    filter var(--duration-fast) var(--ease-standard),
    opacity var(--duration-fast) var(--ease-standard);
}

.button::before,
button::before,
input[type="button"]::before,
input[type="submit"]::before,
input[type="reset"]::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 2px solid rgba(5, 5, 9, 0.7);
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-neon-cyan);
  filter: brightness(1.08);
}

.button:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active {
  transform: translateY(0);
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 1);
}

.button:disabled,
button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
input[type="reset"]:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

.button--secondary {
  --btn-bg: linear-gradient(135deg, #111827 0%, #0f172a 40%, #1e293b 100%);
  --btn-text: var(--color-primary);
  --btn-border: rgba(148, 163, 184, 0.5);
  box-shadow: var(--shadow-soft);
}

.button--danger {
  --btn-bg: linear-gradient(135deg, var(--color-accent-red), #ff6b81);
  --btn-text: #050509;
  box-shadow: var(--shadow-neon-red);
}

.button:focus-visible,
button:focus-visible,
input[type="button"]:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible {
  outline: 2px solid var(--color-accent-gold);
  outline-offset: 3px;
}

/* Form inputs: consistent padding & focus state */

input[type="text"],
input[type="email"],
input[type="search"],
input[type="password"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.4);
  background-color: rgba(15, 23, 42, 0.95);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard),
    background-color var(--duration-normal) var(--ease-standard);
}

input::placeholder,
textarea::placeholder {
  color: rgba(148, 163, 184, 0.7);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(31, 244, 255, 0.6), 0 0 18px rgba(31, 244, 255, 0.4);
  background-color: #020617;
}

fieldset {
  border: 1px solid rgba(75, 85, 99, 0.7);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
}

legend {
  padding: 0 var(--space-2);
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

/* Card: for knowledge base entries, charts, infographics */

.card {
  position: relative;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  background:
    linear-gradient(145deg, rgba(31, 244, 255, 0.08), transparent 55%),
    radial-gradient(circle at top right, rgba(255, 212, 71, 0.12), transparent 60%),
    #050509;
  border: 1px solid rgba(31, 41, 55, 0.9);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(31, 244, 255, 0.08) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(31, 244, 255, 0.08) 1px, transparent 1px);
  background-size: 16px 16px;
  opacity: 0.12;
  pointer-events: none;
}

.card__header {
  margin-bottom: var(--space-4);
}

.card__title {
  margin-bottom: var(--space-2);
}

.card__meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-muted);
}

.card--highlight {
  border-color: rgba(31, 244, 255, 0.7);
  box-shadow: var(--shadow-neon-cyan);
}

/* Infographic & chart container helper */

.chart-panel {
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  background: radial-gradient(circle at top, rgba(31, 244, 255, 0.16), transparent 60%),
    #020617;
  border: 1px solid rgba(31, 41, 55, 0.9);
}

.chart-panel--danger {
  background: radial-gradient(circle at top, rgba(255, 49, 80, 0.16), transparent 60%), #020617;
  border-color: rgba(127, 29, 29, 0.9);
}

.chart-panel--success {
  background: radial-gradient(circle at top, rgba(38, 240, 168, 0.16), transparent 60%), #020617;
  border-color: rgba(6, 95, 70, 0.9);
}

/* Navigation shell helper */

.navbar {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 5, 9, 0.95), rgba(5, 5, 9, 0.4));
  border-bottom: 1px solid rgba(31, 244, 255, 0.24);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-3);
  padding-bottom: var(--space-3);
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: var(--font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-gold);
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.navbar__link {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

.navbar__link:hover,
.navbar__link[aria-current="page"] {
  color: var(--color-primary);
}

/* Tag/pill for power-ups, masks, etc. */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-muted);
}

.badge--primary {
  border-color: rgba(31, 244, 255, 0.8);
  color: var(--color-primary);
}

.badge--danger {
  border-color: rgba(255, 49, 80, 0.9);
  color: var(--color-accent-red);
}

.badge--gold {
  border-color: rgba(255, 212, 71, 0.9);
  color: var(--color-accent-gold);
}

/* Pixel-art & retro helpers */

.pixel-art {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.glow-cyan {
  text-shadow: 0 0 12px rgba(31, 244, 255, 0.9);
}

.glow-red {
  text-shadow: 0 0 12px rgba(255, 49, 80, 0.9);
}

.glow-gold {
  text-shadow: 0 0 10px rgba(255, 212, 71, 0.9);
}

/* Footer helper */

.footer {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  border-top: 1px solid rgba(15, 23, 42, 0.9);
  background: radial-gradient(circle at top, rgba(31, 244, 255, 0.18), transparent 50%), #020617;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}