@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600;700&display=swap');

:root {
  color-scheme: light;
  --bg: #f8f9fa;
  --text: #212529;
  --panel: #ffffff;
  --shadow: rgba(0, 0, 0, 0.05);
  --ball-bg: #ffffff;
  --ball-shadow: rgba(0, 0, 0, 0.1);
  --button-bg: #4f46e5;
  --button-text: #ffffff;
  --button-bg-hover: #4338ca;
  --toggle-bg: #e9ecef;
  --toggle-bg-hover: #dee2e6;
  --toggle-icon: #495057;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121212;
  --text: #e9ecef;
  --panel: #1e1e1e;
  --shadow: rgba(255, 255, 255, 0.05);
  --ball-bg: #2c2c2c;
  --ball-shadow: rgba(0, 0, 0, 0.2);
  --button-bg: #6366f1;
  --button-text: #ffffff;
  --button-bg-hover: #4f46e5;
  --toggle-bg: #343a40;
  --toggle-bg-hover: #495057;
  --toggle-icon: #f8f9fa;
}

body {
  font-family: 'Poppins', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--text);
  transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
  text-align: center;
  background-color: var(--panel);
  padding: 3rem;
  border-radius: 20px;
  box-shadow: 0 10px 30px var(--shadow);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.numbers {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
  margin: 3rem 0;
}

.number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--ball-bg);
  box-shadow: 0 4px 10px var(--ball-shadow);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.75rem;
  font-weight: 600;
  transform: scale(0);
  animation: pop-in 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55) forwards;
}

@keyframes pop-in {
  to {
    transform: scale(1);
  }
}

#generate {
  background-color: var(--button-bg);
  color: var(--button-text);
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

#generate:hover {
  background-color: var(--button-bg-hover);
  transform: translateY(-2px);
}

#generate:active {
    transform: translateY(0);
}

.theme-toggle {
  background-color: var(--toggle-bg);
  color: var(--toggle-icon);
  border: none;
  border-radius: 50%;
  width: 45px;
  height: 45px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
  overflow: hidden;
}

.theme-toggle:hover {
    background-color: var(--toggle-bg-hover);
    transform: rotate(15deg);
}

.theme-toggle .icon {
    font-size: 1.5rem;
    transition: transform 0.4s ease;
}

.theme-toggle .sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun {
    display: block;
}

[data-theme="dark"] .theme-toggle .moon {
    display: none;
}