:root {
  /* Light Theme Colors (Default) */
  --accent-color: oklch(0.65 0.25 140);
  --primary-color: oklch(0.25 0.05 240);
  --bg-color: oklch(0.98 0.01 240);
  --text-primary: oklch(0.2 0.02 240);
  --text-secondary: oklch(0.4 0.05 240);
  --header-bg: oklch(0.95 0.02 140 / 0.3);
  --footer-border: oklch(0.9 0.01 240);

  /* Shared Values */
  --ball-color-1: oklch(0.8 0.15 80);
  --ball-color-2: oklch(0.7 0.2 250);
  --ball-color-3: oklch(0.65 0.25 20);
  --ball-color-4: oklch(0.5 0.05 300);
  --ball-color-5: oklch(0.7 0.01 150);

  --transition-smooth: all 0.3s ease;
  --shadow-glow: 0 0 20px -5px var(--accent-color);
}

body[data-theme='dark'] {
  /* Dark Theme Colors */
  --accent-color: oklch(0.7 0.25 140);
  --primary-color: oklch(0.9 0.02 240);
  --bg-color: oklch(0.2 0.02 240);
  --text-primary: oklch(0.95 0.01 240);
  --text-secondary: oklch(0.6 0.05 240);
  --header-bg: oklch(0.25 0.05 240 / 0.3);
  --footer-border: oklch(0.3 0.01 240);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.3s ease, color 0.3s ease;
}

.noise-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
}

/* Header Section */
header {
  padding: 4rem 0 2rem;
  background: linear-gradient(180deg, var(--header-bg), transparent);
}

.logo-area {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.logo-icon {
  font-size: 2.5rem;
  background: var(--accent-color);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 18px;
  box-shadow: var(--shadow-glow);
  animation: float 4s ease-in-out infinite;
  transition: var(--transition-smooth);
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.logo-text h1 {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--primary-color);
  line-height: 1;
  transition: var(--transition-smooth);
}

.logo-text p {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3em;
  color: var(--accent-color);
  margin-top: 0.2rem;
  transition: var(--transition-smooth);
}

/* Theme Switcher */
.theme-switcher {
  position: relative;
}

.theme-switcher input {
  display: none;
}

.theme-switcher label {
  cursor: pointer;
  width: 60px;
  height: 30px;
  background-color: var(--primary-color);
  display: block;
  border-radius: 100px;
  position: relative;
}

.theme-switcher label::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background-color: var(--bg-color);
  border-radius: 50%;
  transition: 0.3s;
}

.theme-switcher input:checked + label {
  background-color: var(--accent-color);
}

.theme-switcher input:checked + label::after {
  transform: translateX(30px);
}

.theme-switcher .sun, .theme-switcher .moon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 16px;
  transition: opacity 0.3s, transform 0.3s;
}

.theme-switcher .sun {
  left: 6px;
  opacity: 0;
}

.theme-switcher .moon {
  right: 6px;
  opacity: 1;
}

.theme-switcher input:checked + label .sun {
  opacity: 1;
}

.theme-switcher input:checked + label .moon {
  opacity: 0;
}


.header-content h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  max-width: 800px;
}

.header-content p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  max-width: 600px;
}

/* Button Styling */
.glow-button {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 1.25rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 800;
  border-radius: 50px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  transition: var(--transition-smooth);
  box-shadow: var(--shadow-glow);
}

.glow-button:hover {
  transform: scale(1.05) translateY(-5px);
  filter: brightness(1.1);
  box-shadow: 0 15px 40px -10px var(--accent-color);
}

.glow-button:active {
  transform: scale(0.98);
}

/* Lotto Display */
main {
  padding: 4rem 0 8rem;
  flex-grow: 1;
}

.lotto-display {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  min-height: 150px;
}

.placeholder-text {
  font-size: 1.5rem;
  color: var(--text-secondary);
  font-weight: 700;
}

.ball {
  width: clamp(60px, 10vw, 100px);
  height: clamp(60px, 10vw, 100px);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 900;
  color: oklch(0.98 0.01 240);
  box-shadow: inset 0 -5px 10px rgba(0,0,0,0.2), 0 10px 20px rgba(0,0,0,0.1);
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
  position: relative;
  animation: pop-in 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}

.ball.bonus::before {
  content: '+';
  position: absolute;
  top: 50%;
  left: -40px;
  font-size: 3rem;
  color: var(--text-secondary);
}

@keyframes pop-in {
  from { transform: scale(0.5) translateY(50px); opacity: 0; }
  to { transform: scale(1) translateY(0); opacity: 1; }
}

.ball[data-color="1"] { background-color: var(--ball-color-1); }
.ball[data-color="2"] { background-color: var(--ball-color-2); }
.ball[data-color="3"] { background-color: var(--ball-color-3); }
.ball[data-color="4"] { background-color: var(--ball-color-4); }
.ball[data-color="5"] { background-color: var(--ball-color-5); }


/* Footer Section */
footer {
  padding: 4rem 0;
  border-top: 1px solid var(--footer-border);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

@media (max-width: 768px) {
  header { padding: 3rem 0 1rem; }
  .container { padding: 0 1.5rem; }
  .lotto-display { gap: 1rem; }
  .logo-area { flex-direction: column; align-items: flex-start; }
  .theme-switcher { position: absolute; top: 1.5rem; right: 1.5rem; }
}