/* ===== RESET ET BODY ===== */
* {
  box-sizing: border-box;
  user-select: none;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at top, #1c1c1c 0%, #000 70%),
    #000;
  color: #eee;
  font-family: 'Segoe UI', Tahoma, sans-serif;
}

#app {
  max-width: 1100px;
  width: 100%;
  padding: 30px;
}

/* TITRE */
h1 {
  text-align: center;
  font-size: 48px;
  letter-spacing: 4px;
  color: #ffcc00;
  margin-bottom: 30px;
  text-shadow: 0 0 20px rgba(255,200,0,0.4);
}

/* LAYOUT MENU / PREVIEW */
.menu-preview-container {
  display: flex;
  gap: 40px;
}

/* MENU OPTIONS */
.menu-column {
  flex: 1;
}

.menu-title {
  font-size: 14px;
  letter-spacing: 2px;
  margin-bottom: 8px;
  color: #999;
}

.menu-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.menu-option {
  padding: 8px 14px;
  border: 1px solid #333;
  background: linear-gradient(180deg, #111, #070707);
  cursor: pointer;
  transition: all 0.2s ease;
}

.menu-option:hover,
.menu-option.active {
  border-color: #ff9900;
  color: #ffcc00;
}

/* PREVIEW */
.preview-column {
  width: 360px;
  padding: 10px;
  background: linear-gradient(180deg, #111, #050505);
  border: 2px solid #222;
}

#preview-block {
  height: 220px;
  background: repeating-linear-gradient(
    45deg,
    #111,
    #111 10px,
    #0c0c0c 10px,
    #0c0c0c 20px
  );
}

/* BOUTONS PRINCIPAUX */
button {
  margin-top: 35px;
  padding: 14px 30px;
  font-size: 16px;
  letter-spacing: 2px;
  border: none;
  cursor: pointer;
  color: #000;
}

#play {
  margin-right: 20px;
  background: linear-gradient(180deg, #ff9900, #81470d);
}

#play:hover {
  background: linear-gradient(180deg, #81470d, #ff9900);
}

#editor {
  background: linear-gradient(180deg, #3a7752, #2eb363);
  color: #ddd;
  border: 1px solid #555;
}

#editor:hover {
  background: linear-gradient(180deg, #2eb363, #3a7752);
  color: #fff;
}

/* ===== BOUTON MP3 ET LECTEUR ===== */
#mp3-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 50px;
  height: 50px;
  border: none;
  background: #111;
  color: #fff;
  font-size: 24px;
  border-radius: 12px;
  cursor: pointer;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s ease;
}

#mp3-toggle:hover {
  background: #222;
}

/* CONTENEUR LECTEUR MP3 SLIDE */
#mp3player-container {
  position: fixed;
  top: 50px;
  left: -320px; /* caché à gauche */
  width: 280px;
  height: 200px;
  z-index: 999;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 0 10px rgba(0,0,0,0.7);
  transition: left 0.4s ease; /* animation glissante */
}

#mp3player-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Quand le lecteur est actif */
#mp3player-container.active {
  left: 20px; /* glisse depuis la gauche */
}