/* ==================================================================
   Variables
   ================================================================== */
:root {
  /* Color palette - casino-inspired, elegant, vibrant */
  --color-background: #f8f4ee;           /* ivory / light beige */
  --color-surface: #ffffff;
  --color-surface-soft: #f3ece1;

  --color-text: #1d2130;                 /* soft navy charcoal */
  --color-text-muted: #747789;

  --color-primary: #1b3b73;              /* soft navy blue */
  --color-primary-soft: rgba(27, 59, 115, 0.1);
  --color-primary-strong: #13284d;

  --color-accent-gold: #d6a95b;          /* champagne gold */
  --color-accent-copper: #c16a3b;        /* warm copper */

  --color-success: #2f9b63;
  --color-warning: #e7a640;
  --color-danger: #d24646;

  --gray-50: #f7f7f9;
  --gray-100: #ececf1;
  --gray-200: #d8d9e1;
  --gray-300: #c2c4d0;
  --gray-400: #a2a5b3;
  --gray-500: #7b7f92;
  --gray-600: #5d6071;
  --gray-700: #424457;
  --gray-800: #2c2f40;
  --gray-900: #191b26;

  /* Typography */
  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-heading: "Playfair Display", "Times New Roman", 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 hero */

  --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 */

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadows (soft, atmospheric, event-like) */
  --shadow-sm: 0 6px 18px rgba(10, 16, 32, 0.08);
  --shadow-md: 0 14px 40px rgba(10, 16, 32, 0.14);
  --shadow-lg: 0 26px 70px rgba(5, 10, 30, 0.18);

  /* Glassmorphism for header / cards */
  --glass-background: rgba(250, 247, 241, 0.78);
  --glass-border: rgba(255, 255, 255, 0.6);
  --glass-blur: 18px;

  /* Transitions & motion */
  --transition-fast: 150ms ease-out;
  --transition-base: 220ms ease-out;
  --transition-slow: 350ms ease-out;

  --transition-bezier-soft: cubic-bezier(0.19, 1, 0.22, 1);

  /* Layout */
  --container-width: 1120px;
  --container-width-wide: 1320px;
}

/* Respect user motion preferences */
@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;
}

* {
  margin: 0;
}

html,
body {
  padding: 0;
}

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

body {
  min-height: 100vh;
}

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;
}

ul,
ol {
  padding-left: 1.25rem;
}

a {
  color: inherit;
}

/* Remove default focus outlines (we'll add better ones with :focus-visible) */
:focus {
  outline: none;
}

/* ==================================================================
   Base styles
   ================================================================== */
body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: radial-gradient(circle at top left, #fff7e7 0, #f8f4ee 42%, #f2ece1 100%);
  -webkit-font-smoothing: antialiased;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-text);
  line-height: var(--line-height-snug);
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(2.4rem, 4vw, var(--font-size-5xl));
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.9rem, 3vw, var(--font-size-4xl));
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.5rem, 2.4vw, var(--font-size-3xl));
  margin-bottom: var(--space-3);
}

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

h5 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h6 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

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

p.lead {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

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

a {
  text-decoration: none;
  color: var(--color-primary);
  transition: color var(--transition-fast),
    opacity var(--transition-fast);
}

a:hover {
  color: var(--color-accent-copper);
}

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

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

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

[tabindex="-1"]:focus:not(:focus-visible) {
  outline: none !important;
}

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

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

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

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

.section__headline {
  margin-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-xs {
  gap: var(--space-2);
}

.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-6);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-8);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Spacing utilities (margin / padding) */
.mt-0 { margin-top: 0 !important; }
.mt-xs { margin-top: var(--space-2) !important; }
.mt-sm { margin-top: var(--space-3) !important; }
.mt-md { margin-top: var(--space-4) !important; }
.mt-lg { margin-top: var(--space-6) !important; }
.mt-xl { margin-top: var(--space-10) !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-xs { margin-bottom: var(--space-2) !important; }
.mb-sm { margin-bottom: var(--space-3) !important; }
.mb-md { margin-bottom: var(--space-4) !important; }
.mb-lg { margin-bottom: var(--space-6) !important; }
.mb-xl { margin-bottom: var(--space-10) !important; }

.pt-0 { padding-top: 0 !important; }
.pt-sm { padding-top: var(--space-3) !important; }
.pt-md { padding-top: var(--space-4) !important; }
.pt-lg { padding-top: var(--space-6) !important; }
.pt-xl { padding-top: var(--space-10) !important; }

.pb-0 { padding-bottom: 0 !important; }
.pb-sm { padding-bottom: var(--space-3) !important; }
.pb-md { padding-bottom: var(--space-4) !important; }
.pb-lg { padding-bottom: var(--space-6) !important; }
.pb-xl { padding-bottom: var(--space-10) !important; }

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

/* Width utilities */
.w-100 { width: 100%; }

/* ==================================================================
   Buttons
   ================================================================== */
.btn {
  --btn-bg: var(--color-primary);
  --btn-bg-hover: var(--color-primary-strong);
  --btn-color: #ffffff;
  --btn-border: transparent;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-color);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-fast),
    box-shadow var(--transition-base),
    transform var(--transition-base);
  box-shadow: 0 12px 26px rgba(8, 17, 40, 0.24);
}

.btn:hover {
  background: var(--btn-bg-hover);
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(8, 17, 40, 0.28);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(8, 17, 40, 0.2);
}

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

.btn--primary {
  --btn-bg: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent-copper) 100%);
  --btn-bg-hover: linear-gradient(135deg, var(--color-primary-strong) 0%, #a24f2b 100%);
}

.btn--outline {
  --btn-bg: transparent;
  --btn-bg-hover: rgba(255, 255, 255, 0.06);
  --btn-color: var(--color-primary-strong);
  --btn-border: rgba(27, 59, 115, 0.32);
  box-shadow: none;
}

.btn--ghost-light {
  --btn-bg: rgba(255, 255, 255, 0.08);
  --btn-bg-hover: rgba(255, 255, 255, 0.18);
  --btn-color: #ffffff;
  --btn-border: rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.25);
}

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

.btn--lg {
  padding: 0.9rem 2.2rem;
  font-size: var(--font-size-base);
}

.btn[disabled],
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
  transform: none;
}

/* ==================================================================
   Form Elements
   ================================================================== */
label {
  display: inline-block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
}

input,
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(10, 16, 32, 0.08);
  background-color: rgba(255, 255, 255, 0.92);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition:
    border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast),
    transform var(--transition-fast);
}

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

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: none;
  border-color: var(--color-accent-gold);
  box-shadow: 0 0 0 1px rgba(214, 169, 91, 0.7), 0 18px 38px rgba(16, 24, 40, 0.14);
  background-color: #ffffff;
}

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

input[disabled],
textarea[disabled],
select[disabled] {
  cursor: not-allowed;
  background-color: var(--gray-100);
  color: var(--gray-500);
}

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

.field-error {
  margin-top: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* ==================================================================
   Cards & Surfaces
   ================================================================== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
}

.card--soft {
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(248, 244, 238, 0.96));
}

.card--glass {
  background: var(--glass-background);
  border-radius: var(--radius-xl);
  border: 1px solid var(--glass-border);
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.25);
  backdrop-filter: blur(var(--glass-blur));
}

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

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

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

/* ==================================================================
   Header & Hero helper classes (optional structure)
   ================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(var(--glass-blur));
  background: linear-gradient(90deg, rgba(248, 244, 238, 0.90), rgba(255, 255, 255, 0.94));
  border-bottom: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 14px 40px rgba(12, 20, 44, 0.18);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: 0.9rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav a {
  position: relative;
  padding-block: 0.3rem;
  color: var(--gray-700);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-accent-gold), var(--color-accent-copper));
  transition: width var(--transition-base) var(--transition-bezier-soft);
}

.nav a:hover::after {
  width: 100%;
}

.hero {
  position: relative;
  padding-block: var(--space-20);
}

.hero--full {
  min-height: min(100vh, 900px);
  display: flex;
  align-items: center;
}

.hero__eyebrow {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent-copper);
  margin-bottom: var(--space-3);
}

.hero__headline {
  max-width: 640px;
}

.hero__subheading {
  margin-top: var(--space-3);
  max-width: 520px;
  color: var(--color-text-muted);
}

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

/* Decorative floating chips/cards holder */
.hero-decor {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-decor__item {
  position: absolute;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 30%, #ffffff 0, var(--color-accent-gold) 32%, #5f3c14 100%);
  opacity: 0.12;
  filter: blur(2px);
}

/* ==================================================================
   Footer helper classes
   ================================================================== */
.site-footer {
  background: radial-gradient(circle at top, #20263a 0, #111320 40%, #070813 100%);
  color: #f7f5f0;
  padding-block: var(--space-16) var(--space-8);
}

.site-footer a {
  color: #f7f5f0;
}

.site-footer__columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.site-footer__heading {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: rgba(248, 244, 238, 0.78);
  margin-bottom: var(--space-4);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  border-top: 1px solid rgba(248, 244, 238, 0.14);
  padding-top: var(--space-4);
  font-size: var(--font-size-xs);
  color: rgba(248, 244, 238, 0.7);
}

/* ==================================================================
   Media Queries (mobile-first refinement)
   ================================================================== */
@media (max-width: 768px) {
  .site-header__inner {
    padding-block: 0.7rem;
  }

  .nav {
    display: none; /* can be replaced by mobile nav in project CSS */
  }

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

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

  .hero__headline,
  .hero__subheading {
    max-width: 100%;
  }

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

@media (min-width: 1024px) {
  .hero--full {
    padding-block: var(--space-24);
  }
}

/* ==================================================================
   Helper classes for SEO-friendly highlight blocks in Czech copy
   (e.g., short badges like "Bez reálných sázek", "Zábavné eventy")
   ================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.8rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.badge--gold {
  background: rgba(214, 169, 91, 0.12);
  color: var(--color-accent-copper);
}

.badge--navy {
  background: rgba(27, 59, 115, 0.12);
  color: var(--color-primary-strong);
}

/* End of base.css */