:root {
  /* Color Palette */
  --color-bg-body: #020612; /* deep navy/black */
  --color-bg-elevated: rgba(8, 18, 46, 0.96);
  --color-bg-glass: rgba(7, 20, 52, 0.7);
  --color-bg-glass-soft: rgba(7, 20, 52, 0.55);

  --color-text: #e6f1ff;
  --color-text-muted: #94a3b8;
  --color-text-soft: #ffffff;

  --color-primary: #3b82f6; /* electric blue */
  --color-primary-soft: rgba(59, 130, 246, 0.3);
  --color-primary-strong: #60a5fa;

  --color-accent: #22c55e; /* neon green */
  --color-accent-soft: rgba(34, 197, 94, 0.3);
  --color-accent-strong: #4ade80;

  --color-success: #22c55e;
  --color-warning: #eab308;
  --color-danger: #ef4444;

  --color-neutral-50: #f9fafb;
  --color-neutral-100: #f3f4f6;
  --color-neutral-200: #e5e7eb;
  --color-neutral-300: #d1d5db;
  --color-neutral-400: #9ca3af;
  --color-neutral-500: #6b7280;
  --color-neutral-600: #4b5563;
  --color-neutral-700: #374151;
  --color-neutral-800: #1f2933;
  --color-neutral-900: #0b1120;

  /* Brand gradients & effects */
  --gradient-primary: linear-gradient(135deg, #0ea5e9, #3b82f6 40%, #6366f1 80%);
  --gradient-accent: linear-gradient(135deg, #22c55e, #a3e635);
  --gradient-card: linear-gradient(135deg, rgba(148, 163, 184, 0.08), rgba(56, 189, 248, 0.04));
  --gradient-tournament: linear-gradient(120deg, rgba(34, 197, 94, 0.35), rgba(59, 130, 246, 0.2));

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Rajdhani", "Oswald", 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-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: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (px) */
  --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: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 999px;

  /* Shadows (optimized for dark UI) */
  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.65);
  --shadow-strong: 0 24px 60px rgba(15, 23, 42, 0.95);
  --shadow-glow-primary: 0 0 24px rgba(59, 130, 246, 0.7);
  --shadow-glow-accent: 0 0 20px rgba(34, 197, 94, 0.7);

  /* Borders & outlines */
  --border-subtle: 1px solid rgba(148, 163, 184, 0.24);
  --border-strong: 1px solid rgba(148, 163, 184, 0.45);
  --focus-outline-color: rgba(56, 189, 248, 0.9);
  --focus-outline: 0 0 0 2px rgba(15, 23, 42, 1), 0 0 0 4px rgba(56, 189, 248, 0.95);

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

  /* Layout container widths */
  --container-max-width: 1200px;
  --container-max-width-wide: 1440px;
  --container-padding-x: 1.5rem;
}

/* ========================================
   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,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

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

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

button,
input,
textarea,
select {
  font: inherit;
  color: inherit;
  margin: 0;
}

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

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

img {
  height: auto;
}

textarea {
  resize: vertical;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

:focus {
  outline: none;
}

:focus-visible {
  outline: none;
}

/* ========================================
   BASE STYLES
   ===================================== */
body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

main {
  min-height: calc(100vh - 150px);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: var(--line-height-tight);
  color: #f9fafb;
  margin-bottom: var(--space-3);
}

h1 {
  font-size: clamp(2.5rem, 2.1rem + 1.4vw, 3.25rem);
}

h2 {
  font-size: clamp(2rem, 1.8rem + 0.8vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 1.3rem + 0.6vw, 1.875rem);
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

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

strong {
  font-weight: 600;
  color: #e5e7eb;
}

small {
  font-size: var(--font-size-sm);
}

a {
  color: var(--color-primary-strong);
  transition: color var(--transition-base), text-shadow var(--transition-base);
}

a:hover {
  color: var(--color-accent-strong);
  text-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
}

a:focus-visible {
  box-shadow: var(--focus-outline);
  border-radius: var(--radius-sm);
}

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

hr {
  border: none;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  margin: var(--space-6) 0;
}

/* ========================================
   ACCESSIBILITY & REDUCED MOTION
   ===================================== */
:focus-visible {
  box-shadow: var(--focus-outline);
  border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ========================================
   UTILITIES
   ===================================== */

/* Layout containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-x);
}

.container--wide {
  max-width: var(--container-max-width-wide);
}

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

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

.section--hero {
  padding-block: var(--space-16);
}

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

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

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

.gap-lg {
  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: 960px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Visibility helpers */
.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;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Text helpers */
.text-center {
  text-align: center;
}

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

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

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

.uppercase {
  text-transform: uppercase;
}

.badge-label {
  font-size: var(--font-size-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* Spacing utilities (margin-bottom only to avoid conflicts) */
.mb-0 {
  margin-bottom: 0 !important;
}

.mb-xs {
  margin-bottom: var(--space-1) !important;
}

.mb-sm {
  margin-bottom: var(--space-2) !important;
}

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

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

.mb-xl {
  margin-bottom: var(--space-8) !important;
}

/* Background utilities for tournament feel */
.bg-surface {
  background-color: var(--color-bg-elevated);
}

.bg-glass {
  background: var(--color-bg-glass);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
}

.bg-glass-soft {
  background: var(--color-bg-glass-soft);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}

.bg-gradient-primary {
  background-image: var(--gradient-primary);
}

.bg-gradient-tournament {
  background-image: var(--gradient-tournament);
}

/* ========================================
   COMPONENTS
   ===================================== */

/* Buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: #f9fafb;
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.3), transparent 45%),
    radial-gradient(circle at bottom right, rgba(34, 197, 94, 0.25), transparent 50%),
    rgba(15, 23, 42, 0.9);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.9);
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(148, 163, 184, 0.22), rgba(15, 23, 42, 0.85));
  opacity: 0.85;
  pointer-events: none;
}

.btn > * {
  position: relative;
  z-index: 1;
}

.btn--primary {
  background: var(--gradient-primary);
  border-color: rgba(56, 189, 248, 0.6);
  box-shadow: var(--shadow-glow-primary);
}

.btn--accent {
  background: var(--gradient-accent);
  border-color: rgba(34, 197, 94, 0.75);
  box-shadow: var(--shadow-glow-accent);
}

.btn--ghost {
  background: rgba(15, 23, 42, 0.75);
  border-color: rgba(148, 163, 184, 0.35);
}

.btn--sm {
  padding: 0.55rem 1.2rem;
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: 0.9rem 1.9rem;
  font-size: var(--font-size-base);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 1);
}

.btn--primary:hover:not(:disabled) {
  box-shadow: 0 0 28px rgba(59, 130, 246, 0.95);
}

.btn--accent:hover:not(:disabled) {
  box-shadow: 0 0 24px rgba(34, 197, 94, 0.95);
}

.btn:active:not(:disabled) {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.85);
}

.btn:focus-visible {
  box-shadow: var(--focus-outline), 0 0 24px rgba(56, 189, 248, 0.85);
}

.btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
}

/* Inputs & form fields */
.input,
.select,
.textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: rgba(15, 23, 42, 0.9);
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.4);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.85);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

.input::placeholder,
.textarea::placeholder {
  color: rgba(148, 163, 184, 0.65);
}

.input:focus-visible,
.select:focus-visible,
.textarea:focus-visible {
  border-color: rgba(56, 189, 248, 0.9);
  box-shadow: 0 0 0 1px rgba(15, 23, 42, 1), 0 0 0 2px rgba(56, 189, 248, 0.9);
  outline: none;
}

.input[aria-invalid="true"],
.textarea[aria-invalid="true"] {
  border-color: rgba(239, 68, 68, 0.85);
}

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

.field-helper {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

.field-error {
  margin-top: var(--space-1);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card (Glassmorphism tournament card) */
.card {
  position: relative;
  padding: var(--space-5);
  border-radius: var(--radius-xl);
  background: var(--gradient-card), var(--color-bg-glass);
  border: 1px solid rgba(148, 163, 184, 0.28);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.22), transparent 52%),
    radial-gradient(circle at 110% 0%, rgba(34, 197, 94, 0.16), transparent 55%),
    radial-gradient(circle at 50% 120%, rgba(15, 23, 42, 0.9), transparent 70%);
  opacity: 0.8;
  pointer-events: none;
}

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

.card--highlight {
  border-color: rgba(56, 189, 248, 0.7);
  box-shadow: var(--shadow-glow-primary);
}

.card--poker {
  background-image: linear-gradient(135deg, rgba(15, 23, 42, 0.97), rgba(15, 23, 42, 0.96)),
    radial-gradient(circle at 30% 0%, rgba(56, 189, 248, 0.32), transparent 55%),
    radial-gradient(circle at 90% 120%, rgba(34, 197, 94, 0.28), transparent 60%);
  background-blend-mode: overlay;
  border-radius: 24px;
}

.card--board-game {
  background-image: radial-gradient(circle at 10% 0%, rgba(96, 165, 250, 0.24), transparent 60%),
    radial-gradient(circle at 95% 100%, rgba(74, 222, 128, 0.2), transparent 70%),
    linear-gradient(145deg, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98));
}

/* Tournament bracket-inspired subtle border */
.card--bracket {
  border-image: linear-gradient(135deg, rgba(56, 189, 248, 0.9), rgba(34, 197, 94, 0.9)) 1;
}

/* Tag / pill component (for game types: Poker, Sakk, Dáma, stb.) */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border: 1px solid rgba(148, 163, 184, 0.4);
  color: var(--color-text-soft);
  background: rgba(15, 23, 42, 0.85);
}

.tag--primary {
  border-color: rgba(56, 189, 248, 0.8);
  color: #e0f2fe;
  background: rgba(37, 99, 235, 0.28);
}

.tag--accent {
  border-color: rgba(34, 197, 94, 0.8);
  color: #dcfce7;
  background: rgba(22, 163, 74, 0.3);
}

/* Chip / avatar-circle (for blinds, buy-in amounts, etc.) */
.chip-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.16), transparent 50%),
    conic-gradient(from 90deg, rgba(56, 189, 248, 0.9), rgba(34, 197, 94, 0.9), rgba(56, 189, 248, 0.9));
  color: #f9fafb;
  font-weight: 600;
  font-size: 0.78rem;
  box-shadow: 0 0 18px rgba(15, 23, 42, 0.95);
}

/* ========================================
   SPECIALIZED BACKGROUNDS FOR PAGES
   (Poker, Chess, Checkers, Rules, etc.)
   ===================================== */

/* Poker table texture */
.bg-poker-table {
  background-image:
    radial-gradient(circle at 20% 0%, rgba(56, 189, 248, 0.4), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(239, 68, 68, 0.32), transparent 55%),
    radial-gradient(circle at 50% 120%, rgba(34, 197, 94, 0.4), transparent 65%),
    repeating-radial-gradient(circle at 50% 50%, rgba(15, 23, 42, 0.96), rgba(15, 23, 42, 0.98) 2px, rgba(2, 6, 23, 0.98) 4px, rgba(2, 6, 23, 0.98) 8px);
  background-size: cover;
  background-position: center;
}

/* Chess / board grid backdrop */
.bg-board-grid {
  background-image:
    linear-gradient(rgba(30, 64, 175, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 64, 175, 0.18) 1px, transparent 1px),
    radial-gradient(circle at 0 0, rgba(59, 130, 246, 0.4), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(34, 197, 94, 0.32), transparent 55%),
    linear-gradient(135deg, #020617, #020617 40%, #0b1120 100%);
  background-size: 40px 40px, 40px 40px, auto, auto, auto;
}

/* Section header highlight (for page titles like "Versenyek", "Poker", "Szabályok") */
.section-header {
  margin-bottom: var(--space-6);
}

.section-kicker {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-text-soft);
  margin-bottom: var(--space-2);
}

.section-title {
  font-size: clamp(2rem, 1.5rem + 1.1vw, 2.6rem);
  margin-bottom: var(--space-2);
}

.section-subtitle {
  max-width: 40rem;
  color: var(--color-text-muted);
}

/* ========================================
   NAVBAR & FOOTER BASICS (shared across pages)
   ===================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: linear-gradient(to bottom, rgba(2, 6, 23, 0.95), rgba(2, 6, 23, 0.82), transparent);
  border-bottom: 1px solid rgba(30, 64, 175, 0.6);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: 0.85rem;
}

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

.nav__link {
  position: relative;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--color-text-soft);
  padding-block: 0.25rem;
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -4px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(56, 189, 248, 0), rgba(56, 189, 248, 0.85), rgba(34, 197, 94, 0));
  transform-origin: center;
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.nav__link:hover {
  color: #e5e7eb;
}

.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}

.nav__link--active {
  color: #f9fafb;
}

.site-footer {
  border-top: 1px solid rgba(30, 64, 175, 0.8);
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.16), transparent 60%),
    radial-gradient(circle at 100% 100%, rgba(34, 197, 94, 0.18), transparent 70%),
    rgba(2, 6, 23, 0.98);
  padding-block: var(--space-6);
  margin-top: var(--space-12);
}

.site-footer__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

/* ========================================
   RESPONSIVE TWEAKS
   ===================================== */

@media (max-width: 768px) {
  .section {
    padding-block: var(--space-8);
  }

  .site-header__inner {
    padding-block: 0.75rem;
  }

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

  .card {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
  }
}

@media (max-width: 480px) {
  .section {
    padding-block: var(--space-6);
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}