* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #111;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

header {
  background: #ffc107;
  color: #111;
  text-align: center;
  padding: 18px 12px;
}

header h1 {
  margin: 0;
  font-size: 32px;
}

header p {
  margin: 4px 0 0;
  font-weight: bold;
}

#app {
  padding: 18px;
}

.menu-btn,
.nav-btn {
  width: 100%;
  border: 2px solid #ffc107;
  background: #222;
  color: #fff;
  border-radius: 18px;
  padding: 18px;
  margin-bottom: 14px;
  text-align: left;
  font-size: 18px;
}

.menu-btn:active,
.nav-btn:active {
  background: #333;
}

.jp-title {
  display: block;
  font-size: 24px;
  font-weight: bold;
}

.en-title {
  display: block;
  margin-top: 6px;
  color: #ffd54f;
  font-size: 17px;
}

.screen-title {
  font-size: 28px;
  color: #ffc107;
  margin-bottom: 24px;
}

.phrase-card {
  background: #1d1d1d;
  border: 1px solid #444;
  border-radius: 18px;
  padding: 20px;
  margin-bottom: 18px;
}

.english {
  font-size: 30px;
  font-weight: bold;
  line-height: 1.35;
  margin-bottom: 14px;
}

.japanese {
  font-size: 20px;
  color: #ddd;
  line-height: 1.5;
}

.nav-btn {
  text-align: center;
  font-weight: bold;
}

label {
  display: block;
  color: #ffc107;
  font-weight: bold;
  margin: 16px 0 6px;
}

input {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: 2px solid #ffc107;
  background: #111;
  color: white;
  font-size: 18px;
}

.speak-btn {
  width: 100%;
  margin-top: 16px;
  padding: 14px;
  border-radius: 14px;
  border: none;
  background: #ffc107;
  color: #111;
  font-size: 18px;
  font-weight: bold;
}

.speak-btn:active {
  background: #ffda47;
}

.speakable {
  cursor: pointer;
  user-select: none;
  transition: 0.2s;
}

.speakable:hover {
  color: #ffd54f;
}

.speakable:active {
  transform: scale(0.98);
  color: #ffc107;
}
/* Splash Screen */

#splash{
    position:fixed;
    inset:0;
    background:#f5b400;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
    z-index:9999;
    transition:opacity .5s ease;
}

#splash.hide{
    opacity:0;
    pointer-events:none;
}

.splash-logo{
    width:140px;
    height:140px;
    margin-bottom:25px;
}

#splash h1{
    color:#111;
    font-size:42px;
    margin:0;
    font-weight:700;
}

#splash p{
    color:#333;
    margin-top:10px;
    font-size:18px;
    letter-spacing:1px;
}