/* =========================================
   Variables
   ========================================= */
:root {
  /* Colors */
  --color-bg: #050607; /* deep black */
  --color-bg-elevated: #0c1011; /* dark graphite */
  --color-bg-soft: #111617; /* charcoal */
  --color-surface-glass: rgba(7, 15, 10, 0.9);
  --color-border-subtle: rgba(132, 153, 137, 0.28);
  --color-border-strong: #3afc8f;

  --color-text: #f7f7f7; /* clean white */
  --color-text-muted: #a6b3a9;
  --color-text-soft: #ced8cf;

  --color-primary: #35d870; /* grass green accent */
  --color-primary-soft: rgba(53, 216, 112, 0.16);
  --color-primary-dark: #125832; /* forest green */

  --color-success: #4ade80;
  --color-warning: #facc15;
  --color-danger: #f97373;

  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2933;
  --color-gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Playfair Display", "Georgia", 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-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-none: 0;
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-pill: 999px;

  /* Shadows (cinematic) */
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);
  --shadow-strong: 0 35px 80px rgba(0, 0, 0, 0.75);
  --shadow-glow-green: 0 0 18px rgba(53, 216, 112, 0.6);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 320ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
  --container-padding-x: 1.25rem;
}

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

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

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

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

body {
  min-height: 100vh;
}

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

ul {
  list-style: none !important;
  padding-left: 0;
}

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

img {
  height: auto;
}

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

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

textarea {
  resize: vertical;
}

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

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

[hidden] {
  display: none !important;
}

/* =========================================
   Base
   ========================================= */
body {
  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);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-tight);
}

h1 { font-size: var(--font-size-4xl); margin-bottom: var(--space-4); }

h2 { font-size: var(--font-size-3xl); margin-bottom: var(--space-3); }

h3 { font-size: var(--font-size-2xl); margin-bottom: var(--space-2); }

h4 { font-size: var(--font-size-xl); margin-bottom: var(--space-2); }

h5 { font-size: var(--font-size-lg); margin-bottom: var(--space-1); }

h6 { font-size: var(--font-size-base); margin-bottom: var(--space-1); }

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

strong {
  font-weight: 600;
}

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

a {
  position: relative;
  transition:
    color var(--transition-base),
    opacity var(--transition-base),
    text-decoration-color var(--transition-base);
}

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

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

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

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

/* 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;
}

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

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

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

.section--hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  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;
}

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

.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: 1fr;
  }
}

/* Layout helpers */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-2); }
.mt-md { margin-top: var(--space-4); }
.mt-lg { margin-top: var(--space-6); }

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

.pt-lg { padding-top: var(--space-6); }
.pb-lg { padding-bottom: var(--space-6); }

/* Hero overlay utility for full-width imagery */
.hero-overlay {
  position: relative;
  isolation: isolate;
  color: var(--color-text);
}

.hero-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top left, rgba(53, 216, 112, 0.38), transparent 55%),
    radial-gradient(circle at bottom right, rgba(12, 65, 37, 0.9), rgba(5, 6, 7, 0.95));
  mix-blend-mode: soft-light;
  z-index: -1;
}

.hero-overlay__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.05) brightness(0.5);
  z-index: -2;
}

.hero-overlay__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(5, 6, 7, 0.92), rgba(5, 6, 7, 0.35));
  z-index: -1;
}

/* Navigation toggle consistency */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  border-radius: 999px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base), background-color var(--transition-base);
}

/* =========================================
   Components
   ========================================= */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  background-color: var(--color-primary-dark);
  color: var(--color-text);
  box-shadow: 0 0 0 1px rgba(58, 252, 143, 0.16), var(--shadow-soft);
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast),
    border-color var(--transition-base);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(53, 216, 112, 0.28), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.btn:hover {
  background-color: var(--color-primary);
  color: #05120a;
  box-shadow: var(--shadow-glow-green);
  transform: translateY(-1px);
}

.btn:hover::before {
  opacity: 1;
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 0 0 1px rgba(58, 252, 143, 0.24);
}

.btn--ghost {
  background-color: transparent;
  border-color: var(--color-border-subtle);
  box-shadow: none;
}

.btn--ghost:hover {
  background-color: rgba(13, 27, 20, 0.9);
  border-color: var(--color-primary);
}

.btn--secondary {
  background-color: rgba(11, 29, 20, 0.9);
  border-color: rgba(75, 148, 104, 0.7);
}

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

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

/* Form fields */
.input,
textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(120, 146, 129, 0.4);
  background-color: rgba(8, 12, 9, 0.95);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

.input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(58, 252, 143, 0.4);
  background-color: rgba(8, 16, 11, 0.98);
}

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

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

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

.field-hint {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

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

/* Card */
.card {
  position: relative;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(135deg, rgba(9, 18, 13, 0.96), rgba(6, 10, 7, 0.97));
  backdrop-filter: blur(18px);
  border: 1px solid var(--color-border-subtle);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  border: 1px solid rgba(58, 252, 143, 0.12);
  mix-blend-mode: screen;
}

.card--muted {
  background: linear-gradient(135deg, rgba(9, 13, 11, 0.96), rgba(7, 11, 9, 0.98));
}

.card-header {
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Tag / label pill for formats like “Pokerový večer” */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(119, 166, 136, 0.6);
  background: radial-gradient(circle at 0 0, rgba(53, 216, 112, 0.22), transparent 65%);
  font-size: var(--font-size-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

.tag--soft {
  border-color: rgba(119, 166, 136, 0.4);
  background: rgba(8, 13, 10, 0.85);
}

/* FAQ accordion basics (structure only) */
.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(82, 110, 92, 0.6);
  background: rgba(7, 11, 9, 0.96);
  padding: var(--space-4);
}

.faq-question {
  font-size: var(--font-size-lg);
  cursor: pointer;
}

.faq-answer {
  margin-top: var(--space-2);
  color: var(--color-text-soft);
}

/* Header / Footer scaffolding */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(5, 8, 6, 0.96), rgba(5, 8, 6, 0.88));
  border-bottom: 1px solid rgba(64, 99, 76, 0.6);
}

.site-footer {
  padding-block: var(--space-8);
  border-top: 1px solid rgba(64, 99, 76, 0.6);
  background: radial-gradient(circle at top, rgba(23, 74, 44, 0.48), rgba(5, 7, 6, 0.98));
}

.site-footer p {
  margin-bottom: 0;
}

/* Hero labels row for evening formats */
.hero-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-labels .tag {
  background: rgba(6, 16, 10, 0.9);
}

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

  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
}