:root {
  /* =============================
   *  Color System
   * ============================= */
  /* Core brand / theme */
  --color-bg: #050814;
  --color-surface: #0b1020;
  --color-surface-alt: #10162b;
  --color-text: #f3f5ff;
  --color-text-muted: #a5b0d0;
  --color-border-subtle: #232742;

  /* Accent / state colors (strategic neon vibe) */
  --color-primary: #46e0c8;
  --color-primary-soft: rgba(70, 224, 200, 0.12);
  --color-primary-strong: #3ab7a3;

  --color-success: #5dd68b;
  --color-success-soft: rgba(93, 214, 139, 0.12);

  --color-warning: #ffb648;
  --color-warning-soft: rgba(255, 182, 72, 0.12);

  --color-danger: #ff4c6a;
  --color-danger-soft: rgba(255, 76, 106, 0.12);

  /* Neutral grayscale (cool / bluish to fit sci-fi strategy) */
  --gray-50: #f7f8ff;
  --gray-100: #e4e7ff;
  --gray-200: #c7ccec;
  --gray-300: #a6adc8;
  --gray-400: #858ca4;
  --gray-500: #686f87;
  --gray-600: #50556a;
  --gray-700: #383c4d;
  --gray-800: #242637;
  --gray-900: #111424;

  /* Overlays */
  --color-overlay-soft: rgba(3, 6, 24, 0.85);
  --color-overlay-strong: rgba(0, 0, 0, 0.92);

  /* =============================
   *  Typography
   * ============================= */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue",
    sans-serif;
  --font-display: "Rajdhani", "Orbitron", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular,
    Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Font sizes (rem-based scale) */
  --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 */
  --font-size-5xl: 3rem;     /* 48px */

  /* Line heights */
  --line-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Letter spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;

  /* =============================
   *  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
   * ============================= */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* =============================
   *  Shadows (subtle neon / card)
   * ============================= */
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.45);
  --shadow-elevated: 0 18px 45px rgba(0, 0, 0, 0.6);
  --shadow-glow-primary: 0 0 25px rgba(70, 224, 200, 0.45);

  /* =============================
   *  Transitions / Motion
   * ============================= */
  --transition-fast: 120ms ease-out;
  --transition-normal: 200ms ease-out;
  --transition-slow: 320ms ease-out;

  /* Layout helpers */
  --layout-max-width: 1120px;
  --layout-gutter: 1.25rem;
}

/* =========================================================
 *  Reset / Normalize
 * ======================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
ul,
ol,
dl,
dd {
  margin: 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
}

/* Make sure text is never invisible while fonts load */
body {
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Avoid animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =========================================================
 *  Base Styles
 * ======================================================= */
body {
  min-height: 100vh;
  background: radial-gradient(circle at top, #151b3a 0, #050814 55%, #01020a 100%);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
}

main {
  min-height: 60vh;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  color: var(--gray-50);
}

h1 {
  font-size: clamp(2.25rem, 3vw + 1.5rem, 3.25rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.75rem, 2vw + 1.1rem, 2.25rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: 1.5rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: 1.25rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}

strong,
b {
  font-weight: 600;
}

code,
pre {
  font-family: var(--font-mono);
  font-size: 0.95em;
}

pre {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: rgba(5, 8, 20, 0.9);
  border: 1px solid var(--color-border-subtle);
  overflow-x: auto;
}

a {
  position: relative;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-normal);
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.14em;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  transition: width var(--transition-normal);
}

a:hover::after {
  width: 100%;
}

a:hover {
  color: var(--color-primary-strong);
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-6) 0;
}

/* =========================================================
 *  Accessibility / Focus
 * ======================================================= */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: none;
}

/* Screen-reader only utility */
.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;
}

/* =========================================================
 *  Layout Utilities
 * ======================================================= */
.container {
  width: 100%;
  max-width: var(--layout-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--layout-gutter);
  padding-right: var(--layout-gutter);
}

.section {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

.section--tight {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
}

.section--hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
}

/* Flex helpers */
.flex {
  display: flex;
}

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

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

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

.flex-center {
  align-items: center;
  justify-content: center;
}

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

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

.gap-xs {
  gap: var(--space-1);
}

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

.gap-md {
  gap: var(--space-3);
}

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

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

/* Grid helpers */
.grid {
  display: grid;
  gap: var(--space-4);
}

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

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

.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

/* Simple spacing utilities for layout tweaks */
.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-1); }
.mt-sm { margin-top: var(--space-2); }
.mt-md { margin-top: var(--space-3); }
.mt-lg { margin-top: var(--space-4); }
.mt-xl { margin-top: var(--space-6); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-1); }
.mb-sm { margin-bottom: var(--space-2); }
.mb-md { margin-bottom: var(--space-3); }
.mb-lg { margin-bottom: var(--space-4); }
.mb-xl { margin-bottom: var(--space-6); }

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

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

/* Buttons: primary CTA tuned for Google Play link prominence */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  line-height: 1;
  cursor: pointer;
  transition:
    background-color var(--transition-normal),
    border-color var(--transition-normal),
    color var(--transition-normal),
    box-shadow var(--transition-normal),
    transform var(--transition-fast);
}

.btn-primary {
  background: radial-gradient(circle at 10% 0%, #46e0c8 0, #1bc3cc 45%, #1678e5 100%);
  color: #020308;
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-glow-primary);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-elevated), var(--shadow-glow-primary);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-soft);
}

.btn-outline {
  background: rgba(11, 16, 32, 0.9);
  border-color: var(--color-border-subtle);
  color: var(--gray-100);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(70, 224, 200, 0.35);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--gray-200);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.02);
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: 0.9rem 2.1rem;
  font-size: var(--font-size-md);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Inputs / Forms */
.input,
textarea,
select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background: rgba(5, 8, 20, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition:
    border-color var(--transition-normal),
    box-shadow var(--transition-normal),
    background-color var(--transition-normal);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-500);
}

.input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(70, 224, 200, 0.4);
}

textarea {
  min-height: 140px;
  resize: vertical;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: var(--font-size-sm);
  color: var(--gray-200);
}

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

.form-help {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--gray-400);
}

.form-error {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Cards: used for guides, news, placeholders for gameplay scenes */
.card {
  position: relative;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(11, 16, 32, 0.96), rgba(16, 22, 43, 0.98));
  border: 1px solid rgba(53, 69, 110, 0.7);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 0 0, rgba(70, 224, 200, 0.12), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(255, 76, 106, 0.12), transparent 55%);
  opacity: 0.9;
  mix-blend-mode: screen;
  pointer-events: none;
}

.card__content {
  position: relative;
  z-index: 1;
}

.card--flat {
  box-shadow: none;
}

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

.card-meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--gray-400);
}

/* Basic tag / pill, useful for strategy labels, difficulty etc. */
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  border: 1px solid rgba(113, 132, 176, 0.6);
  background: rgba(11, 16, 32, 0.85);
  color: var(--gray-200);
}

.pill--primary {
  border-color: rgba(70, 224, 200, 0.8);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* Media placeholders (for gameplay scenes, maps, cards, enemies) */
.media-frame {
  position: relative;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background: radial-gradient(circle at top, #1b2345 0, #050814 55%);
  overflow: hidden;
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(135deg, rgba(70, 224, 200, 0.18), transparent 60%),
    linear-gradient(225deg, rgba(255, 76, 106, 0.12), transparent 65%);
  mix-blend-mode: screen;
  opacity: 0.9;
}

.media-frame__inner {
  position: relative;
  z-index: 1;
  padding: var(--space-4);
}

.media-frame--tall {
  min-height: 220px;
}

.media-frame--map {
  min-height: 280px;
}

/* Badges for platform / difficulty etc. (e.g., Google Play CTA context) */
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  background: rgba(27, 35, 69, 0.7);
  color: var(--gray-100);
}

.badge--accent {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

/* =========================================================
 *  Hero / CTA Helpers (for Home cinematic hero)
 * ======================================================= */
.hero {
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 10% 0, rgba(70, 224, 200, 0.08), transparent 60%),
    radial-gradient(circle at 90% 20%, rgba(255, 76, 106, 0.06), transparent 55%),
    radial-gradient(circle at 50% 120%, rgba(22, 120, 229, 0.12), transparent 60%);
  opacity: 1;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--gray-400);
  margin-bottom: var(--space-2);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 3.4vw + 1.6rem, 3.6rem);
  line-height: var(--line-height-tight);
  letter-spacing: var(--tracking-tight);
  text-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
}

.hero-subtitle {
  margin-top: var(--space-3);
  max-width: 40rem;
}

.hero-cta-group {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Google Play style CTA badge alignment */
.cta-play-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.cta-play-badge span {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--gray-100);
}

/* =========================================================
 *  Misc Helpers
 * ======================================================= */

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.chip {
  padding: 0.18rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(114, 132, 176, 0.6);
  font-size: var(--font-size-xs);
  color: var(--gray-200);
}

.chip--class {
  border-color: rgba(93, 214, 139, 0.8);
  background: var(--color-success-soft);
  color: var(--color-success);
}

.chip--danger {
  border-color: rgba(255, 76, 106, 0.8);
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.table-basic {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.table-basic th,
.table-basic td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--color-border-subtle);
}

.table-basic th {
  font-family: var(--font-display);
  text-align: left;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  color: var(--gray-400);
}

.table-basic tbody tr:hover {
  background: rgba(15, 21, 45, 0.85);
}

/* Stack page content away from sticky headers (if used) */
.page-shell {
  padding-top: var(--space-8);
  padding-bottom: var(--space-12);
}

@media (max-width: 768px) {
  .section,
  .section--hero,
  .section--tight {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
  }

  .hero-title {
    font-size: clamp(2.1rem, 4vw + 1.4rem, 2.7rem);
  }

  .hero-cta-group {
    flex-direction: column;
    align-items: stretch;
  }
}