/* ========================================================================
   Variables
   ======================================================================== */
:root {
  /* Color palette - cosmic / sci-fi */
  --color-bg: #050713; /* deep space */
  --color-bg-alt: #0b0f24;
  --color-surface: #111629;
  --color-surface-soft: #181e33;
  --color-text: #f5f7ff;
  --color-text-muted: #a3b1d9;
  --color-border-subtle: #252b45;

  --color-primary: #6b7bff; /* neon violet-blue */
  --color-primary-soft: rgba(107, 123, 255, 0.14);
  --color-primary-strong: #9a7dff;

  --color-success: #4ade80; /* green */
  --color-warning: #facc15; /* yellow */
  --color-danger: #f97373; /* red */

  --color-gray-50: #f9fafb;
  --color-gray-100: #e5e7eb;
  --color-gray-200: #d1d5db;
  --color-gray-300: #9ca3af;
  --color-gray-400: #6b7280;
  --color-gray-500: #4b5563;
  --color-gray-600: #374151;
  --color-gray-700: #1f2933;
  --color-gray-800: #111827;
  --color-gray-900: #020617;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Rajdhani", "Eurostile", system-ui, -apple-system,
    "Segoe UI", sans-serif;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-base: 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-height-tight: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* 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-7: 1.75rem;  /* 28px */
  --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-sm: 0.25rem;  /* 4px */
  --radius-md: 0.5rem;   /* 8px */
  --radius-lg: 0.75rem;  /* 12px */
  --radius-xl: 1rem;     /* 16px */
  --radius-pill: 999px;

  /* Shadows - neon / sci-fi vibes */
  --shadow-soft: 0 8px 18px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 14px 30px rgba(0, 0, 0, 0.65);
  --shadow-glow-primary: 0 0 16px rgba(107, 123, 255, 0.6);

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

/* Prefer-reduced-motion: minimize animations */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
    --transition-base: 0ms;
    --transition-slow: 0ms;
  }

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

ul[role="list"],
ol[role="list"] {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

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

/* Remove default link underlines */
a {
  text-decoration: none;
  color: inherit;
}

/* ========================================================================
   Base Styles
   ======================================================================== */
body {
  min-height: 100vh;
  background: radial-gradient(circle at 0 0, #1a2540 0, transparent 55%),
    radial-gradient(circle at 100% 100%, #3d1e5c 0, transparent 55%),
    var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 var(--space-3);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 3vw, var(--font-size-5xl));
  line-height: var(--line-height-tight);
}

h2 {
  font-size: clamp(var(--font-size-2xl), 2.4vw, var(--font-size-4xl));
  line-height: var(--line-height-tight);
}

h3 {
  font-size: var(--font-size-xl);
}

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

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

strong,
b {
  font-weight: 600;
}

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

a {
  color: var(--color-primary);
  transition: color var(--transition-base);
}

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

/* ========================================================================
   Accessibility / Focus
   ======================================================================== */
:focus {
  outline: none;
}

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

/* 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%;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  max-width: 1200px;
}

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

.section--tight {
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
}

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

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

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

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

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

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

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

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

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

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

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

@media (max-width: 900px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

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

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

.mt-0 {
  margin-top: 0;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--space-3);
}

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

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

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ========================================================================
   Buttons
   ======================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-fast),
    box-shadow var(--transition-base),
    border-color var(--transition-base);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #050713 !important;
  box-shadow: var(--shadow-glow-primary);
}

.btn-primary:hover:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(-1px);
  box-shadow: 0 0 22px rgba(154, 125, 255, 0.9);
}

.btn-primary:active:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-subtle);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover:not(:disabled):not([aria-disabled="true"]) {
  border-color: var(--color-primary);
  background: rgba(15, 23, 42, 0.7);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled):not([aria-disabled="true"]) {
  background: var(--color-primary-soft);
}

.btn-cta {
  padding-inline: 2.25rem;
  font-size: var(--font-size-base);
  box-shadow: 0 0 24px rgba(107, 123, 255, 0.8);
}

/* ========================================================================
   Form Elements
   ======================================================================== */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="password"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(9, 12, 28, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

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

input::placeholder,
textarea::placeholder {
  color: var(--color-gray-400);
}

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);
}

input:disabled,
textarea:disabled,
select:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

label {
  display: inline-block;
  margin-bottom: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

/* ========================================================================
   Components
   ======================================================================== */
/* Card - used for feature highlights, guides, blog previews, etc. */
.card {
  background: radial-gradient(circle at top, rgba(107, 123, 255, 0.18), transparent 55%),
    var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(58, 69, 120, 0.8);
  padding: var(--space-5);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 120% -10%, rgba(154, 125, 255, 0.25), transparent 55%);
  opacity: 0.7;
  pointer-events: none;
}

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

.card--outline {
  background: rgba(10, 14, 32, 0.8);
  border-style: dashed;
}

/* Image / media wrapper for screenshots */
.media-frame {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(90, 103, 180, 0.8);
  background: linear-gradient(135deg, #020617, #020617 35%, #111827 100%);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(148, 163, 253, 0.45), transparent 55%);
  mix-blend-mode: screen;
  opacity: 0.4;
  pointer-events: none;
}

.media-frame img,
.media-frame picture,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Tag / pill for labels (e.g., "Nowa aktualizacja", difficulty, role) */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 253, 0.7);
  background: rgba(15, 23, 42, 0.7);
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tag--warning {
  border-color: rgba(250, 204, 21, 0.8);
  color: #fef9c3;
}

.tag--danger {
  border-color: rgba(248, 113, 113, 0.8);
  color: #fee2e2;
}

/* Simple badge for Google Play CTA context */
.badge-store {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
}

/* Navigation shell (generic, page-specific CSS can extend) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 7, 19, 0.88), rgba(5, 7, 19, 0.6));
  border-bottom: 1px solid rgba(51, 65, 85, 0.9);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
}

.navbar__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--font-size-sm);
}

.navbar__link {
  position: relative;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  padding-block: 0.25rem;
}

.navbar__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-strong));
  transition: width var(--transition-base);
}

.navbar__link:hover {
  color: var(--color-text);
}

.navbar__link:hover::after,
.navbar__link--active::after {
  width: 100%;
}

.navbar__link--active {
  color: var(--color-text);
}

@media (max-width: 900px) {
  .navbar__menu {
    display: none; /* mobile nav handled in page-level CSS */
  }
}

/* Footer base */
.site-footer {
  border-top: 1px solid rgba(51, 65, 85, 0.9);
  background: radial-gradient(circle at 100% 0, rgba(107, 123, 255, 0.22), transparent 55%),
    #020617;
  padding-top: var(--space-8);
  padding-bottom: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

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

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

/* ========================================================================
   Hero / Cosmic Accent Helpers
   ======================================================================== */
.hero {
  padding-top: var(--space-16);
  padding-bottom: var(--space-12);
}

.hero__title {
  max-width: 24ch;
}

.hero__subtitle {
  max-width: 36ch;
  font-size: var(--font-size-lg);
}

.hero__actions {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.cosmic-grid {
  position: relative;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(75, 85, 172, 0.85);
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(17, 24, 39, 0.98)),
    radial-gradient(circle at top, rgba(107, 123, 255, 0.25), transparent 60%);
  overflow: hidden;
}

.cosmic-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      rgba(148, 163, 253, 0.09) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(148, 163, 253, 0.09) 1px,
      transparent 1px
    );
  background-size: 40px 40px;
  mix-blend-mode: soft-light;
  opacity: 0.8;
  pointer-events: none;
}

.cosmic-grid__content {
  position: relative;
  z-index: 1;
}

/* ========================================================================
   Misc utilities
   ======================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(148, 163, 253, 0.7);
  font-size: var(--font-size-xs);
}

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

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

.bg-surface {
  background-color: var(--color-surface);
}

.border-subtle {
  border: 1px solid var(--color-border-subtle);
}