/* Nordic Night Theme – Sleek, futuristic, and accessible design for Danish casino site */
/* Mobile-first, with vibrant aurora-inspired gradients and smooth transitions */

/* =====================================================
   Design Tokens
   ===================================================== */
:root {
  /* Palette */
  --nordic-night: #0d1b2a; /* Deep navy background */
  --frost-blue: #1b263b; /* Secondary background */
  --aurora-vivid: #00b4d8; /* Primary accent (vibrant cyan) */
  --glacier-green: #48cae4; /* Secondary accent (light aqua) */
  --snow-white: #f0f4f8; /* Primary text */
  --mist-gray: #b8c7d9; /* Secondary text */
  --shadow-gray: #6b7280; /* Muted text */
  --ice-glow: #90e0ef; /* Subtle glow effect */

  /* Backgrounds */
  --bg-main: var(--nordic-night);
  --bg-panel: var(--frost-blue);
  --bg-panel-light: #223548;

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
  --font-title: 'Orbitron', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;

  /* Type scale */
  --fs-xs: 0.75rem; /* 12px */
  --fs-sm: 0.875rem; /* 14px */
  --fs-base: 1rem; /* 16px */
  --fs-md: 1.125rem; /* 18px */
  --fs-lg: 1.25rem; /* 20px */
  --fs-xl: 1.5rem; /* 24px */
  --fs-2xl: 1.875rem; /* 30px */
  --fs-3xl: 2.25rem; /* 36px */
  --fs-4xl: 3rem; /* 48px */

  /* Spacing */
  --sp-xs: 0.25rem;
  --sp-sm: 0.5rem;
  --sp-md: 0.75rem;
  --sp-base: 1rem;
  --sp-lg: 1.25rem;
  --sp-xl: 1.5rem;
  --sp-2xl: 2rem;
  --sp-3xl: 2.5rem;
  --sp-4xl: 3rem;
  --sp-5xl: 4rem;

  /* Radius */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 16px;
  --r-circle: 999px;

  /* Shadows/Glows */
  --glow-nordic: 0 0 10px rgba(0, 180, 216, 0.3), 0 0 20px rgba(72, 202, 228, 0.2);
  --shadow-panel: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-raised: 0 8px 24px rgba(0, 0, 0, 0.4);

  /* Layout */
  --container-max: 1280px;

  /* Motion */
  --ease-smooth: cubic-bezier(0.4, 0.8, 0.2, 1);
  --transition-fast: 150ms var(--ease-smooth);
  --transition-normal: 300ms var(--ease-smooth);
}

/* =====================================================
   Base / Reset
   ===================================================== */
* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--snow-white);
  background: var(--bg-main);
  font-family: var(--font-main);
  font-size: var(--fs-base);
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--aurora-vivid);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--glacier-green);
}

h1, h2, h3, h4 {
  font-family: var(--font-title);
  line-height: 1.2;
  margin: 0 0 var(--sp-md);
}

h1 {
  font-size: var(--fs-3xl);
  letter-spacing: 0.02em;
}

h2 {
  font-size: var(--fs-xl);
}

h3 {
  font-size: var(--fs-lg);
}

:focus-visible {
  outline: 2px solid var(--aurora-vivid);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--sp-base);
}

/* =====================================================
   Buttons
   ===================================================== */
.action-btn {
  --btn-bg: var(--aurora-vivid);
  --btn-fg: var(--snow-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5ch;
  padding: var(--sp-md) var(--sp-xl);
  border-radius: var(--r-md);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 500;
  font-size: var(--fs-sm);
  transition: transform var(--transition-fast), background var(--transition-normal), box-shadow var(--transition-normal);
  box-shadow: var(--shadow-panel);
}

.action-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-nordic);
  color: var(--btn-fg);
}

.action-btn:active {
  transform: translateY(0);
}

.action-btn--primary {
  --btn-bg: linear-gradient(135deg, var(--aurora-vivid), var(--glacier-green));
}

.action-btn--outline {
  --btn-bg: transparent;
  border: 1px solid var(--mist-gray);
  color: var(--mist-gray);
}

.action-btn--highlight {
  --btn-bg: linear-gradient(135deg, var(--aurora-vivid) 20%, var(--glacier-green) 80%);
  border: none;
  box-shadow: var(--glow-nordic);
}

.action-btn--highlight:hover {
  box-shadow: 0 0 14px rgba(0, 180, 216, 0.5), 0 0 28px rgba(72, 202, 228, 0.3);
}

/* =====================================================
   Age Verification Modal
   ===================================================== */
.age-verification {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(13, 27, 42, 0.9);
  z-index: 1000;
  padding: var(--sp-base);
}

.age-verification__panel {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(135deg, var(--frost-blue), var(--nordic-night));
  border-radius: var(--r-lg);
  padding: var(--sp-2xl);
  box-shadow: var(--shadow-raised), var(--glow-nordic);
  text-align: center;
}

.age-verification__icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--sp-lg);
  opacity: 0.95;
}

.age-verification__title {
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-sm);
}

.age-verification__text {
  color: var(--mist-gray);
  margin-bottom: var(--sp-xl);
}

.age-verification__actions {
  display: grid;
  gap: var(--sp-md);
}

@media (min-width: 480px) {
  .age-verification__actions {
    grid-template-columns: 1fr 1fr;
  }
}

/* =====================================================
   Hero Section
   ===================================================== */
.hero {
  background: linear-gradient(135deg, var(--nordic-night) 20%, var(--frost-blue) 80%);
  padding: var(--sp-3xl) 0 var(--sp-xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.hero__title {
  color: var(--snow-white);
  text-shadow: 0 2px 3px rgba(0, 0, 0, 0.25);
}

.hero__lead {
  color: var(--mist-gray);
  margin: var(--sp-base) 0 0;
  font-size: var(--fs-md);
}

/* =====================================================
   Featured Offers
   ===================================================== */
.featured-offers {
  padding: var(--sp-xl) 0 var(--sp-2xl);
}

.featured-offers__title {
  text-align: center;
  color: var(--snow-white);
  margin-bottom: var(--sp-xl);
}

.featured-offers__slider {
  display: flex;
  gap: var(--sp-base);
  flex-wrap: wrap;
}

.offer-panel {
  flex: 0 0 100%;
  background: var(--bg-panel-light);
  border-radius: var(--r-lg);
  padding: var(--sp-xl);
  box-shadow: var(--shadow-panel);
  border: 1px solid rgba(0, 180, 216, 0.15);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  margin-top: var(--sp-base);
}

.offer-panel--glow:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-raised), var(--glow-nordic);
}

.offer-panel__logo {
  width: 160px;
  height: 96px;
  margin: 0 auto var(--sp-md);
  border-radius: var(--r-md);
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #224358;
}

.offer-panel__content {
  text-align: center;
  margin-bottom: var(--sp-base);
}

.offer-panel__bonus {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--sp-sm) var(--sp-base);
  border-radius: var(--r-md);
  color: var(--mist-gray);
  font-size: var(--fs-sm);
}

.offer-panel__payment-icons {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  justify-content: center;
}

.offer-panel__rating {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--mist-gray);
  margin-top: var(--sp-md);
}

.rating-stars {
  color: var(--glacier-green);
  font-size: var(--fs-sm);
}

.offer-panel__votes {
  font-size: var(--fs-xs);
  color: var(--shadow-gray);
}

.offer-panel__action {
  margin-top: var(--sp-base);
  display: flex;
  justify-content: center;
}

@media (min-width: 768px) {
  .featured-offers__slider {
    display: grid;
    grid-template-columns: 1fr;
  }
  .offer-panel {
    display: grid;
    grid-template-columns: 200px 1fr auto;
    align-items: center;
    column-gap: var(--sp-xl);
  }
  .offer-panel__content {
    margin: 0;
  }
  .offer-panel__logo {
    width: 180px;
    height: 108px;
    margin: 0 auto var(--sp-sm);
  }
  .offer-panel__action {
    justify-content: flex-end;
  }
}

/* =====================================================
   Selection Criteria
   ===================================================== */
.criteria {
  padding: var(--sp-3xl) 0;
  background: var(--frost-blue);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.criteria__title {
  color: var(--snow-white);
  margin-bottom: var(--sp-base);
}

.criteria__text, .criteria__summary {
  color: var(--mist-gray);
  margin: 0 0 var(--sp-md);
}

.criteria__list {
  color: var(--mist-gray);
  padding-left: var(--sp-base);
}

/* =====================================================
   How to Choose
   ===================================================== */
.selection-guide {
  padding: var(--sp-3xl) 0;
  background: var(--nordic-night);
}

.selection-guide__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-base);
}

.selection-guide__item {
  background: var(--bg-panel-light);
  border-radius: var(--r-lg);
  padding: var(--sp-lg);
}

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

/* =====================================================
   Pros and Cons
   ===================================================== */
.advantages-disadvantages {
  padding: var(--sp-3xl) 0;
  background: var(--nordic-night);
}

.advantages-disadvantages__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-base);
}

.advantages-disadvantages__list {
  color: var(--mist-gray);
  padding-left: var(--sp-base);
}

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

/* =====================================================
   Conclusion
   ===================================================== */
.summary {
  padding: var(--sp-3xl) 0;
  background: var(--frost-blue);
}

.summary__text {
  color: var(--mist-gray);
  margin: var(--sp-md) 0 0;
}

/* =====================================================
   Footer
   ===================================================== */
.site-bottom {
  background: var(--nordic-night);
  padding: var(--sp-3xl) 0 var(--sp-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.site-bottom__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-xl);
  margin-bottom: var(--sp-xl);
}

.site-bottom__heading {
  color: var(--snow-white);
  margin-bottom: var(--sp-md);
  font-size: var(--fs-md);
}

.site-bottom__legal {
  color: var(--shadow-gray);
  margin: 0;
}

.site-bottom__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 6px;
}

.site-bottom__link {
  color: var(--mist-gray);
}

.site-bottom__link:hover {
  color: var(--glacier-green);
}

.site-bottom__logos {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-md);
  align-items: center;
}

.site-bottom__cert {
  height: 34px;
  width: auto;
  opacity: 0.95;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.site-bottom__cert:hover {
  opacity: 1;
  transform: translateY(-2px);
}

.site-bottom__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: var(--sp-base);
  text-align: center;
}

.site-bottom__copy {
  color: var(--mist-gray);
  margin: 0;
  font-size: var(--fs-sm);
}

@media (min-width: 900px) {
  .site-bottom__grid {
    grid-template-columns: 2fr 1fr 1fr;
    align-items: start;
  }
}

/* =====================================================
   Utilities
   ===================================================== */
.hidden-visually {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

/* =====================================================
   Motion Preferences
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* =====================================================
   Print
   ===================================================== */
@media print {
  .age-verification, .site-bottom__logos {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
}