/* ===========================================================================
   Variables
   ======================================================================== */
:root {
  /* Colors */
  --color-bg: #05060a; /* deep dungeon background */
  --color-bg-elevated: #0c1018;
  --color-bg-soft: #111623;

  --color-text: #f4f5fb;
  --color-text-muted: #a2a7c2;

  --color-primary: #5b8cff; /* arcane blue accent */
  --color-primary-soft: rgba(91, 140, 255, 0.12);
  --color-primary-strong: #2d63f2;

  --color-success: #35c98b;
  --color-warning: #ffb547;
  --color-danger: #ff5277;

  /* Neutral grays (for borders, separators, UI) */
  --gray-50: #0b0d16;
  --gray-100: #141826;
  --gray-200: #1d2233;
  --gray-300: #272d40;
  --gray-400: #3a425b;
  --gray-500: #565f7a;
  --gray-600: #747ea0;
  --gray-700: #9aa3c4;
  --gray-800: #c3c9e2;
  --gray-900: #e7e9f5;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Rajdhani", "Oswald", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;  /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem;   /* 16px */
  --font-size-md: 1.0625rem;/* 17px */
  --font-size-lg: 1.25rem;  /* 20px */
  --font-size-xl: 1.5rem;   /* 24px */
  --font-size-2xl: 1.875rem;/* 30px */
  --font-size-3xl: 2.25rem; /* 36px */
  --font-size-4xl: 3rem;    /* 48px */

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.6;
  --line-height-loose: 1.8;

  /* Spacing scale (px) */
  --space-0: 0;
  --space-1: 2px;
  --space-2: 4px;
  --space-3: 6px;
  --space-4: 8px;
  --space-5: 10px;
  --space-6: 12px;
  --space-8: 16px;
  --space-10: 20px;
  --space-12: 24px;
  --space-16: 32px;
  --space-20: 40px;
  --space-24: 48px;
  --space-32: 64px;
  --space-40: 80px;
  --space-48: 96px;

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

  /* Shadows (glow-style for gaming aesthetics) */
  --shadow-soft: 0 8px 20px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 14px 35px rgba(0, 0, 0, 0.65);
  --shadow-glow-primary: 0 0 0 1px rgba(91, 140, 255, 0.4),
    0 0 24px rgba(91, 140, 255, 0.35);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease-out;
}

/* Respect prefers-reduced-motion: reduce/disable long transitions */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0.01ms;
    --transition-base: 0.01ms;
    --transition-slow: 0.01ms;
  }
}

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

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

body {
  margin: 0;
}

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

ul,
ol {
  list-style: none;
}

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

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

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

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

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

/* ===========================================================================
   Base Styles
   ======================================================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: block;
}

/* Headings - bold, condensed for game-portal feeling */
h1,
 h2,
 h3,
 h4,
 h5,
 h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.25rem, 3.4vw, 3rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-16);
}

h2 {
  font-size: clamp(1.75rem, 2.6vw, 2.25rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-12);
}

h3 {
  font-size: clamp(1.35rem, 2vw, 1.75rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-8);
}

h4 {
  font-size: 1.125rem;
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-6);
}

p {
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
}

p:last-child {
  margin-bottom: 0;
}

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

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

pre {
  margin: 0;
}

/* Links - subtle underline using border */
a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-base),
    border-color var(--transition-base),
    background-color var(--transition-base);
}

a:hover {
  color: var(--color-primary-strong);
  border-color: rgba(91, 140, 255, 0.5);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: transparent;
}

/* ===========================================================================
   Accessibility
   ======================================================================== */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

:focus:not(:focus-visible) {
  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
   ======================================================================== */
/* Page wrapper / max width container */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-16);
  padding-right: var(--space-16);
}

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

.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.section--alt {
  background: radial-gradient(circle at top, rgba(91, 140, 255, 0.04), transparent),
    linear-gradient(180deg, #05060a 0%, #05060a 40%, #05060a 100%);
}

/* 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;
}

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

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.gap-16 {
  gap: var(--space-16);
}

/* Grid helpers for cards / screenshot layouts */
.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-16);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: var(--space-16);
}

@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

/* Basic spacing utilities (for quick adjustments) */
.mt-0 { margin-top: 0; }
.mt-8 { margin-top: var(--space-8); }
.mt-16 { margin-top: var(--space-16); }
.mt-24 { margin-top: var(--space-24); }
.mb-0 { margin-bottom: 0; }
.mb-8 { margin-bottom: var(--space-8); }
.mb-16 { margin-bottom: var(--space-16); }
.mb-24 { margin-bottom: var(--space-24); }

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

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

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background-color: rgba(91, 140, 255, 0.12);
  color: var(--color-primary);
}

/* ===========================================================================
   Components
   ======================================================================== */
/* Buttons - primary CTA for Google Play, secondary, ghost */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.7rem 1.3rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 600;
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-strong) 100%);
  color: #fff;
  box-shadow: var(--shadow-soft);
}

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

.btn--secondary {
  background-color: var(--gray-100);
  border-color: var(--gray-300);
  color: var(--color-text);
}

.btn--secondary:hover {
  background-color: var(--gray-200);
}

.btn--ghost {
  background-color: transparent;
  border-color: rgba(91, 140, 255, 0.5);
  color: var(--color-primary);
}

.btn--ghost:hover {
  background-color: var(--color-primary-soft);
}

.btn:disabled,
 .btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: none;
  transform: none;
}

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

/* Special CTA style for Google Play button if needed */
.btn--cta {
  padding-inline: 1.6rem;
  font-size: var(--font-size-md);
  box-shadow: var(--shadow-glow-primary);
}

/* Form controls */
.input,
 textarea,
 select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: var(--gray-100);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition: border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
 textarea::placeholder {
  color: var(--gray-600);
}

.input:focus-visible,
 textarea:focus-visible,
 select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

/* Cards - used for mechanics, levels, tips, blog posts */
.card {
  background: radial-gradient(circle at top left, rgba(91, 140, 255, 0.1), transparent 55%),
    var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  border: 1px solid rgba(255, 255, 255, 0.03);
  mix-blend-mode: screen;
}

.card__title {
  margin-bottom: var(--space-6);
}

.card__meta {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-600);
  margin-bottom: var(--space-4);
}

.card--highlight {
  border-color: rgba(91, 140, 255, 0.4);
  box-shadow: var(--shadow-glow-primary);
}

/* Screenshot / media placeholder */
.media-placeholder {
  background: linear-gradient(135deg, #131829 0%, #080b14 100%);
  border-radius: var(--radius-md);
  border: 1px dashed var(--gray-400);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  font-size: var(--font-size-sm);
  padding: var(--space-16);
  text-align: center;
}

/* Pills / tags for difficulty, level type, etc. */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-xs);
  background-color: var(--gray-100);
  color: var(--gray-700);
}

.tag--danger {
  background-color: rgba(255, 82, 119, 0.16);
  color: var(--color-danger);
}

.tag--success {
  background-color: rgba(53, 201, 139, 0.18);
  color: var(--color-success);
}

.tag--warning {
  background-color: rgba(255, 181, 71, 0.18);
  color: var(--color-warning);
}

/* Simple top navigation skeleton (to be extended in page CSS) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(90deg, rgba(5, 6, 10, 0.96), rgba(5, 6, 10, 0.9));
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-12);
}

.site-nav a {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--gray-700);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover,
 .site-nav a[aria-current="page"] {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

/* Hero / main CTA band */
.hero {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr);
  gap: var(--space-24);
}

@media (min-width: 900px) {
  .hero__layout {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
  }
}

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

.hero__title {
  margin-bottom: var(--space-8);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--gray-700);
  margin-bottom: var(--space-16);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  align-items: center;
}

/* Footer skeleton */
.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
  font-size: var(--font-size-xs);
  color: var(--gray-600);
}