/* styles.css - Sudoku WebApp */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');
:root {
  --primary: #1e0c42; /* morado oscuro */
  --secondary: #079ea6; /* azul verdoso */
  --accent: #f0077b; /* rosa magenta */
  --highlight: #f5be58; /* amarillo dorado */
  --light: #e3e0b3; /* beige claro */
  --bg: linear-gradient(135deg, #1e0c42 0%, #079ea6 100%);
  --white: #e3e0b3;
  --button-play: #f0077b;
  --button-score: #f5be58;
  --button-credits: #079ea6;
  --button-text: #1e0c42;
  --button-shadow: 0 4px 16px #1e0c4222;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Press Start 2P', 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--primary);
  min-height: 100vh;
}
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.screen {
  width: 100vw;
  max-width: 480px;
  padding: 2.5rem 1.2rem 2rem 1.2rem;
  background: rgba(227,224,179,0.97);
  border-radius: 1.5rem;
  box-shadow: 0 2px 32px rgba(30,12,66,0.18);
  margin: 1.5rem 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}
button, .btn {
  font-family: 'Press Start 2P', 'Segoe UI', Arial, sans-serif;
  border: none;
  border-radius: 0.7rem;
  padding: 1.1rem 0;
  font-size: 1.05rem;
  margin: 0.6rem 0;
  cursor: pointer;
  font-weight: 600;
  letter-spacing: 0.03em;
  box-shadow: var(--button-shadow);
  width: 220px;
  display: block;
  transition: background 0.18s, transform 0.13s, box-shadow 0.18s, color 0.18s;
}
.btn-play {
  background: var(--button-play);
  color: var(--button-text);
}
.btn-score {
  background: var(--button-score);
  color: var(--button-text);
}
.btn-credits {
  background: var(--button-credits);
  color: var(--button-text);
}
button:hover, .btn:hover, button:focus {
  opacity: 0.75;
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 8px 24px #1e0c4233;
  outline: none;
}
.sudoku-canvas {
  width: 100%;
  max-width: 360px;
  aspect-ratio: 1/1;
  background: var(--light);
  border-radius: 0.7rem;
  margin: 1.2rem 0;
  box-shadow: 0 1px 12px rgba(30,12,66,0.08);
}
.welcome {
  font-size: 1.1rem;
  color: var(--secondary);
  margin-bottom: 1.2rem;
  text-align: center;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.logo-sudoku {
  font-family: 'Press Start 2P', 'Segoe UI', Arial, sans-serif;
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--primary);
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
  text-shadow: 0 2px 8px #079ea644;
}
@media (max-width: 600px) {
  .screen {
    max-width: 100vw;
    border-radius: 0;
    box-shadow: none;
    padding: 1.2rem 0.2rem 1.2rem 0.2rem;
  }
  .sudoku-canvas {
    max-width: 95vw;
  }
  button, .btn {
    width: 98vw;
    min-width: 0;
    font-size: 0.95rem;
  }
}