:root {
  --background-color: #000000;
  --text-color: #ffffff;
  --header-bg: #000000;
  --footer-bg: #000000;
  --button-primary-bg: #c50d0d;
  --button-primary-hover-bg: #e50914;
  --number-bg: #141414;
  --shadow-color: rgba(229, 9, 20, 0.5);

  --font-heading: 'Cinzel', serif;
  --font-body: 'EB Garamond', serif;

  --color-1: #c50d0d;
  --color-10: #e50914;
  --color-20: #f50a18;
  --color-30: #ff0a18;
  --color-40: #ff3c46;
}

[data-theme="light"] {
  --background-color: #ffffff;
  --text-color: #212529;
  --header-bg: #ffffff;
  --footer-bg: #f8f9fa;
  --button-primary-bg: #0d6efd;
  --button-primary-hover-bg: #0b5ed7;
  --number-bg: #ffffff;
  --shadow-color: rgba(0, 0, 0, 0.075);
}

body {
  font-family: var(--font-body);
  background-color: var(--background-color) !important;
  color: var(--text-color) !important;
  transition: background-color 0.3s, color 0.3s;
}

h1, .fs-4 {
  font-family: var(--font-heading);
  text-transform: uppercase;
}

h1.display-5 {
    text-shadow: 0 0 8px var(--shadow-color), 0 0 10px var(--shadow-color);
}

.footer.bg-light {
    background-color: var(--footer-bg) !important;
}

#recommend-btn {
  font-family: var(--font-heading);
  background-color: var(--button-primary-bg);
  border-color: var(--button-primary-bg);
  transition: background-color 0.3s, transform 0.2s;
}

#recommend-btn:hover {
  background-color: var(--button-primary-hover-bg);
  border-color: var(--button-primary-hover-bg);
  transform: translateY(-2px);
}

.lotto-numbers {
  display: flex;
  gap: 1rem;
  justify-content: center;
  background-color: var(--number-bg);
  padding: 1.5rem;
  border-radius: 10px;
  border: 1px solid var(--shadow-color);
  box-shadow: 0 4px 15px var(--shadow-color);
  transition: background-color 0.3s;
  animation: fade-in-up 0.6s ease-out forwards;
}

.number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  font-family: var(--font-heading);
  color: white;
  animation: pop-in 0.5s ease-out forwards;
  opacity: 0;
  transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.number:hover {
  transform: scale(1.1);
  box-shadow: 0 0 15px var(--shadow-color);
}

.number[data-range="1"] { background-color: var(--color-1); }
.number[data-range="10"] { background-color: var(--color-10); }
.number[data-range="20"] { background-color: var(--color-20); }
.number[data-range="30"] { background-color: var(--color-30); }
.number[data-range="40"] { background-color: var(--color-40); }

@keyframes pop-in {
  from {
    opacity: 0;
    transform: scale(0.5);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#theme-switcher.btn-outline-secondary {
    color: var(--text-color);
    border-color: var(--text-color);
}
body[data-theme="dark"] .text-dark,
body[data-theme="light"] .text-dark {
    color: var(--text-color) !important;
}
body[data-theme="dark"] .bg-light,
body[data-theme="light"] .bg-light {
    background-color: var(--footer-bg) !important;
}
body[data-theme="dark"] .text-muted,
body[data-theme="light"] .text-muted {
    color: #a0a0a0 !important;
}
body[data-theme="dark"] .border-bottom,
body[data-theme="light"] .border-bottom {
    border-color: var(--shadow-color) !important;
}