html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  
  /* Arka plan rengi */
  background-color: #0c0c10;
  
  /* Üst katmanda Kovan (Hive) deseni, alt katmanda aşağıdan yukarı smooth gradient */
  background-image: 
    url("data:image/svg+xml,%3Csvg width='56' height='98' viewBox='0 0 56 98' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M28 0l28 16.16v32.33L28 64.66 0 48.5V16.16L28 0zm0 97l-28-16.16V48.5l28-16.16 28 16.16v32.33L28 97z' fill='%23f59e0b' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E"),
    linear-gradient(to top, #14141c 0%, #08080b 100%);
  
  /* Modern ve sade fontlar */
  font-family: "Helvetica Neue", Helvetica, "Montserrat", "Poppins", Arial, sans-serif;
  overflow: hidden;
  color: #ffffff;
}

/* Üst Orta: Kovan Branding */
#top-center {
  position: absolute;
  top: 6%;
  left: 0;
  width: 100%;
  text-align: center;
}

#kovan-logo {
  height: auto;
  max-width: 450px; /* Büyütüldü */
  display: block;
  margin: 0 auto;
}

#branding-text {
  margin-top: 15px;
  letter-spacing: 3px;
}

.light-text {
  font-size: 20px; /* Küçültüldü */
  font-weight: 300;
  color: #a1a1aa;
  text-transform: uppercase;
}

.bold-text {
  font-size: 20px; /* Küçültüldü */
  font-weight: 700;
  color: #ffffff;
  margin-left: 10px;
  text-transform: uppercase;
}

/* Tam Orta: Dönen Şirket Logoları */
#center-showcase {
  position: absolute;
  top: 25%;
  left: 0;
  width: 100%;
  height: 50%;
  text-align: center; /* Resimleri tam yatayda ortalar */
  white-space: nowrap;
}

/* Dikey hizalama (Ghost Centering) hilesi - Eski TV'lerde bile kusursuz çalışır */
#center-showcase:before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  width: 0;
}

#logo-active {
  display: inline-block;
  vertical-align: middle;
  /* Genişlik ve yükseklik JS tarafından zorlanarak küçük PNG'ler büyütülecek */
  opacity: 0;
  transition: opacity 0.6s ease-in-out;
  -webkit-transition: opacity 0.6s ease-in-out;
}

/* Sol Alt: Hava Durumu */
#bottom-left {
  position: absolute;
  bottom: 4%;
  left: 3%;
  text-align: left;
}

#weather-temp {
  font-size: 55px; /* Küçültüldü */
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 5px;
  color: #ffffff;
}

#weather-city {
  font-size: 18px; /* Küçültüldü */
  font-weight: 600;
  color: #f59e0b; /* Tatlı turuncu vurgu */
  letter-spacing: 3px;
}

#weather-desc {
  font-size: 16px; /* Küçültüldü */
  color: #a1a1aa;
  margin-top: 5px;
  font-weight: 300;
}

/* Sağ Alt: Saat ve Tarih */
#bottom-right {
  position: absolute;
  bottom: 4%;
  right: 3%;
  text-align: right;
}

#clock-time {
  font-size: 65px; /* Küçültüldü */
  font-weight: 700;
  letter-spacing: -2px;
  margin-bottom: 5px;
  color: #ffffff;
}

#clock-date {
  font-size: 18px; /* Küçültüldü */
  font-weight: 400;
  color: #f59e0b;
  letter-spacing: 1px;
}

/* Tam Ekran Butonu */
#fullscreen-btn {
  position: absolute;
  bottom: 3%;
  right: 2%;
  width: 30px;
  height: 30px;
  cursor: pointer;
  opacity: 0.2;
  transition: opacity 0.3s;
}

#fullscreen-btn:hover {
  opacity: 1;
}

#fullscreen-btn svg {
  width: 100%;
  height: 100%;
}