/* ========================================================================== 
   Variables
   ========================================================================== */
:root {
  /* Color Palette */
  --color-bg: #050608; /* deep black */
  --color-bg-elevated: #0b0d11; /* dark graphite */
  --color-bg-soft: #141821; /* charcoal */
  --color-surface-glass: rgba(15, 20, 28, 0.88);

  --color-text: #f5f7fb; /* clean white typography */
  --color-text-muted: #9ea7b8;
  --color-text-soft: #7b8494;

  --color-primary: #19b8b8; /* turquoise highlight */
  --color-primary-soft: rgba(25, 184, 184, 0.16);
  --color-primary-strong: #11d0c5; /* cyan-green emphasis */

  --color-success: #37c98a; /* soft mint */
  --color-warning: #f5b642;
  --color-danger: #ff4f64;

  --gray-50: #f7f8fc;
  --gray-100: #e3e6f0;
  --gray-200: #c7cce0;
  --gray-300: #a0a7bf;
  --gray-400: #7b8494;
  --gray-500: #585f6f;
  --gray-600: #3d4454;
  --gray-700: #2b3240;
  --gray-800: #1a202b;
  --gray-900: #10131b;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", sans-serif;
  --font-display: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --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: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* 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-14: 3.5rem;  /* 56px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

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

  /* Shadows (subtle, luminous) */
  --shadow-soft: 0 14px 35px rgba(0, 0, 0, 0.45);
  --shadow-elevated: 0 22px 65px rgba(0, 0, 0, 0.65);
  --shadow-outline: 0 0 0 1px rgba(25, 184, 184, 0.45), 0 0 0 8px rgba(25, 184, 184, 0.12);

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

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 4.25rem;
}

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

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none !important; /* per brief */
}

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

button,
input,
select,
textarea {
  margin: 0;
  font: inherit;
  color: inherit;
  background: transparent;
  border-radius: 0;
}

button {
  border: none;
  padding: 0;
  cursor: pointer;
}

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

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

body,
html {
  min-height: 100%;
}

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

/* ========================================================================== 
   Base Styles
   ========================================================================== */
body {
  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);
}

main {
  min-height: calc(100vh - var(--header-height));
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.1rem, 3vw + 1.4rem, var(--font-size-4xl));
  letter-spacing: 0.03em;
}

h2 {
  font-size: clamp(1.7rem, 2.2vw + 1.1rem, var(--font-size-3xl));
}

h3 {
  font-size: clamp(1.4rem, 1.6vw + 1rem, var(--font-size-2xl));
}

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

h5 {
  font-size: var(--font-size-lg);
}

h6 {
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

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

strong {
  font-weight: 600;
  color: var(--gray-50);
}

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

/* Links */
a {
  position: relative;
  transition: color var(--transition-base);
}

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

a:focus-visible {
  outline: none;
}

/* ========================================================================== 
   Accessibility & Focus
   ========================================================================== */
:focus-visible {
  outline: none;
  box-shadow: var(--shadow-outline);
  border-radius: 0.25rem;
}

/* 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%;
  margin-inline: auto;
  padding-inline: var(--space-4);
  max-width: var(--container-max-width);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-6);
  }
}

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

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-14);
  }
}

/* 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-col {
  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(1, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

@media (min-width: 992px) {
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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

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

.m-auto {
  margin: auto;
}

.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); }
.mt-xl { margin-top: var(--space-8); }

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

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

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

@media (min-width: 768px) {
  .pt-section {
    padding-top: var(--space-14);
  }
  .pb-section {
    padding-bottom: var(--space-14);
  }
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(25, 184, 184, 0.45);
  background: linear-gradient(120deg, rgba(25, 184, 184, 0.15), rgba(5, 6, 8, 0.95));
  color: var(--gray-50);
  font-size: var(--font-size-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Hero overlay utility */
.hero-overlay {
  position: relative;
  isolation: isolate;
}

.hero-overlay::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(25, 184, 184, 0.18), transparent 55%),
              radial-gradient(circle at bottom right, rgba(55, 201, 138, 0.16), transparent 50%),
              linear-gradient(to bottom, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.95));
  mix-blend-mode: normal;
  z-index: -1;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding-inline: 1.5rem;
  padding-block: 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-strong));
  color: #020305;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.4), 0 18px 35px rgba(0, 0, 0, 0.7);
  transition: background var(--transition-base),
              transform var(--transition-fast),
              box-shadow var(--transition-base),
              border-color var(--transition-base),
              color var(--transition-base);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 45px rgba(0, 0, 0, 0.9);
  background: linear-gradient(140deg, var(--color-primary-strong), #5af1d8);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.7);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.55;
  background: var(--gray-700);
  color: var(--gray-300);
  box-shadow: none;
}

.btn-outline {
  background: transparent;
  color: var(--gray-50);
  border-color: rgba(25, 184, 184, 0.7);
  box-shadow: inset 0 0 0 1px rgba(25, 184, 184, 0.3);
}

.btn-outline:hover {
  background: rgba(25, 184, 184, 0.12);
}

.btn-ghost {
  background: rgba(6, 10, 18, 0.9);
  border-color: rgba(118, 131, 150, 0.7);
  color: var(--gray-100);
}

.btn-ghost:hover {
  background: rgba(15, 20, 30, 0.9);
  border-color: rgba(25, 184, 184, 0.6);
}

/* Inputs & Forms */
.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

label {
  font-size: var(--font-size-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-200);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
input[type="time"],
select,
textarea {
  width: 100%;
  padding-inline: 0.9rem;
  padding-block: 0.7rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(118, 131, 150, 0.6);
  background: radial-gradient(circle at top left, rgba(25, 184, 184, 0.1), transparent 55%),
              linear-gradient(to bottom, rgba(10, 13, 19, 0.98), rgba(5, 7, 11, 0.98));
  color: var(--gray-50);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-snug);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.65) inset;
  transition: border-color var(--transition-base),
              box-shadow var(--transition-base),
              background var(--transition-base),
              transform var(--transition-fast);
}

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

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  border-color: rgba(25, 184, 184, 0.9);
  box-shadow: 0 0 0 1px rgba(25, 184, 184, 0.7), 0 0 0 8px rgba(25, 184, 184, 0.18);
  outline: none;
}

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

textarea {
  min-height: 7rem;
  resize: vertical;
}

/* Cards: dark glass panels with luminous borders */
.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  background: linear-gradient(145deg, rgba(13, 17, 25, 0.96), rgba(4, 7, 11, 0.98));
  border: 1px solid rgba(110, 125, 150, 0.55);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid transparent;
  background: linear-gradient(135deg, rgba(25, 184, 184, 0.06), transparent 40%, rgba(55, 201, 138, 0.08)) border-box;
  mix-blend-mode: screen;
  opacity: 0.7;
  pointer-events: none;
}

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

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

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

.card-body {
  position: relative;
  z-index: 1;
}

.card-muted {
  background: rgba(7, 9, 14, 0.96);
}

/* Header & Navigation basics (for burger menu wiring) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(18px);
  background: linear-gradient(to bottom, rgba(2, 3, 6, 0.96), rgba(5, 7, 12, 0.88));
  border-bottom: 1px solid rgba(118, 131, 150, 0.45);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.nav-menu {
  display: none;
}

@media (min-width: 960px) {
  .nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-4);
  }
}

.nav-link {
  position: relative;
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  padding-block: 0.25rem;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--gray-50);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

/* Mobile nav toggle (burger) */
.nav-toggle {
  display: flex;
  flex-direction: column; /* per brief */
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  border: 1px solid rgba(118, 131, 150, 0.7);
  background: radial-gradient(circle at top left, rgba(25, 184, 184, 0.2), transparent 65%),
              rgba(7, 10, 16, 0.96);
  color: var(--gray-50);
}

.nav-toggle span {
  display: block;
  width: 1.1rem;
  height: 1px;
  border-radius: 999px;
  background: rgba(245, 247, 251, 0.9);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

@media (min-width: 960px) {
  .nav-toggle {
    display: none;
  }
}

/* Mobile menu panel helper */
.nav-drawer {
  position: fixed;
  inset: var(--header-height) 0 auto 0;
  background: rgba(5, 7, 12, 0.98);
  border-bottom: 1px solid rgba(118, 131, 150, 0.4);
  padding: var(--space-4);
  display: none;
}

.nav-drawer.open {
  display: block;
}

/* FAQ list */
.faq-item {
  border-bottom: 1px solid rgba(118, 131, 150, 0.5);
  padding-block: var(--space-4);
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: var(--font-size-md);
  color: var(--gray-50);
}

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

/* Hero content layout */
.hero {
  position: relative;
  min-height: min(80vh, 900px);
  color: var(--gray-50);
  display: flex;
  align-items: center;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.hero-kickers {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: var(--space-3);
}

.hero-title {
  margin-bottom: var(--space-3);
}

.hero-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero-meta {
  margin-top: var(--space-4);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-text-soft);
}

/* Reservation / contact block */
.booking-panel {
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  background: radial-gradient(circle at top right, rgba(25, 184, 184, 0.18), transparent 55%),
              linear-gradient(150deg, rgba(8, 11, 17, 0.97), rgba(3, 5, 9, 0.98));
  border: 1px solid rgba(118, 131, 150, 0.7);
  box-shadow: var(--shadow-elevated);
}

.booking-panel-header {
  margin-bottom: var(--space-4);
}

.booking-panel-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

.booking-panel-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

/* Gallery preview */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-2);
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform var(--transition-slow), filter var(--transition-slow);
}

.gallery-item::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.75), transparent 40%);
}

.gallery-item:hover img {
  transform: scale(1.05);
  filter: saturate(1.1);
}

/* Tag row for service labels */
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  padding-inline: 0.7rem;
  padding-block: 0.25rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(118, 131, 150, 0.7);
  font-size: var(--font-size-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-soft);
}

/* Table-style detail lines (for poker-style, etc.) */
.detail-line {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.detail-label {
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.detail-value {
  color: var(--gray-50);
}

/* Footer basics */
.site-footer {
  border-top: 1px solid rgba(118, 131, 150, 0.45);
  background: radial-gradient(circle at top, rgba(25, 184, 184, 0.12), transparent 55%),
              #030408;
  padding-block: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

.footer-meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .footer-meta {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.footer-link {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: var(--font-size-xs);
  color: var(--color-text-soft);
}

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

/* Notes for consistency (non-functional) */
/*
  - Use .container, .section, and .card across all pages for consistent structure.
  - Use .btn, .btn-outline, .btn-ghost for all interactive primary/secondary actions.
  - For service sections (pokerové večery, ruletové programy, blackjack jako atrakce),
    combine .card with .tag-row and .detail-line for structured information.
  - Keep backgrounds dark and rely on turquoise & mint accents for highlights only.
*/