:root {
  --bg-utama: #12161f;
  --bg-container: #1a1f2c;
  --warna-neon: #00ffff;
  --warna-teks: #ffffff;
}

body.tema-biasa {
  --bg-utama: #0f141c;
  --bg-container: #151b26;
  --warna-neon: #38bdf8; 
  --warna-teks: #f8fafc;
}

body.tema-lebaran {
  --bg-utama: #0a1c14;
  --bg-container: #102a1e;
  --warna-neon: #2ecc71; 
  --warna-teks: #f0fff4;
}

body.tema-cinta {
  --bg-utama: #1f0b1e;
  --bg-container: #360621;
  --warna-neon: #ff477e; 
  --warna-teks: #fff0f5;
}

body.tema-ultah {
  --bg-utama: #160f29;
  --bg-container: #2b1c4e;
  --warna-neon: #be95c4; 
  --warna-teks: #e0b1cb;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.hidden {
  display: none !important;
}

body {
  background-color: var(--bg-utama);
  color: var(--warna-teks);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 15px;
  transition: all 0.4s ease;
}

.container {
  background-color: var(--bg-container);
  width: 95%;          
  max-width: 500px;
  padding: 30px;     
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
  margin: 20px auto;  
}

h1, h2 {
  margin-bottom: 10px;
  font-size: 22px;
  font-weight: 700;
}

p {
  margin-bottom: 18px;
  font-size: 14px;
  opacity: 0.85;
}


.btn {
  display: block !important;
  width: 100% !important;
  max-width: 320px !important;
  padding: 15px !important;
  margin: 10px auto !important;
  background-color: #29b6f6 !important;
  color: white !important;
  border-radius: 12px !important;
  border: none !important;
  font-size: 16px !important;
  cursor: pointer !important;
}
  
  background-color: rgba(255, 255, 255, 0.1) !important;
  backdrop-filter: blur(5px) !important;
}

.btn-tema {
  background-color: color-mix(in srgb, var(--warna-neon), transparent 70%) !important;
  border-color: var(--warna-neon) !important;
}

.btn:hover {
  background-color: var(--warna-neon) !important;
  transform: translateY(-2px);
}
}

/* WARNA SOLID (Jreng dan Tidak Transparan) */
.btn-biasa { background-color: #29b6f6 !important; border-color: #03a9f4 !important; }
.btn-lebaran { background-color: #2ecc71 !important; border-color: #27ae60 !important; }
.btn-cinta { background-color: #ff477e !important; border-color: #e83e8c !important; }
.btn-ultah { background-color: #b784bf !important; border-color: #9b59b6 !important; }
.btn-secondary { background-color: #4f5d73 !important; border-color: #37474f !important; }


.button-group {
  display: flex;
  gap: 8px;
  max-width: 320px;
  margin: 15px auto 0 auto;
}

.button-group .btn, .button-group button {
  flex: 1;
  margin-bottom: 0 !important;
}

.input-ucapan {
  width: 100%;
  max-width: 320px;
  height: 90px;
  padding: 10px;
  border-radius: 8px;
  border: 2px solid #4f5d73;
  background-color: rgba(255, 255, 255, 0.05);
  color: #fff;
  font-size: 14px;
  resize: none;
  margin: 0 auto 15px auto;
  outline: none;
  display: block;
}

.input-ucapan:focus {
  border-color: var(--warna-neon);
}

.surat-box {
  background-color: rgba(255, 255, 255, 0.06);
  border: 1.5px dashed rgba(255, 255, 255, 0.25);
  padding: 20px;
  border-radius: 12px;
  max-width: 320px;
  margin: 15px auto;
  min-height: 100px;
  word-wrap: break-word;
  
  font-family: 'Georgia', serif;
  font-size: 12px;
  line-height: 1.6;
  color: #ffffff;
}

.kue-wadah {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
}

.kue-svg {
  width: 90px;
  height: 90px;
}

.palet-warna {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 15px;
}

.kotak-warna {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid #fff;
  transition: transform 0.2s;
}

.kotak-warna:hover {
  transform: scale(1.15);
}