body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  background: black;
  color: white;
  font-family: sans-serif;
}

.logo-img {
  width: 70%;
  height: auto;
  margin-bottom: 7px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

header {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 38px;
  margin-bottom: 14px;
}

.logo { 
  font-size: 2.2rem; 
  font-weight: bold; 
  margin-bottom: 8px; 
  letter-spacing: 1px;
}
.logo span { color: #a9712a; }
.subtitle { 
  color: #aaa; 
  margin-bottom: 6px; 
  font-size: 1.04rem;
}

/* Lang switcher */
.lang-switcher { margin-bottom: 18px; }
.lang-btn {
  background: none;
  border: 1px solid #a9712a;
  color: #a9712a;
  padding: 4px 14px;
  font-size: 1rem;
  margin: 0 3px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.lang-btn.active, .lang-btn:hover { background: #a9712a; color: #fff; }

/* Κουμπιά υπηρεσιών */
.buttons {
  display: flex; 
  flex-wrap: wrap; 
  gap: 14px; 
  margin-bottom: 32px; 
  justify-content: center;
}
.btn {
  background: #a9712a;
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 10px 22px;
  font-size: 1.07rem;
  font-weight: 600;
  transition: all 0.19s;
  box-shadow: 0 2px 10px #0004;
  cursor: pointer;
  min-width: 110px;
  min-height: 38px;
  letter-spacing: 0.5px;
  margin: 0;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn:hover, .btn:focus { background: #8a591f; transform: scale(1.07);}
.lock-btn {
  font-size: 1.12em;
  vertical-align: middle;
  margin-right: 5px;
  color: #fff;
  filter: drop-shadow(0 0 2px #0007);
}

/* Admin panel styling */
.admin-panel {
  background: #211509;
  border: 1px solid #a9712a;
  border-radius: 16px;
  margin-top: 12px;
  padding: 18px 20px 13px 20px;
  min-width: 220px;
  text-align: center;
  box-shadow: 0 2px 13px #0002;
}
.admin-title {
  color:#a9712a; font-weight:600; margin-bottom:6px; display: flex; align-items: center; justify-content: center; gap:7px;
}
.admin-panel input[type="password"] {
  background: #111;
  border: 1px solid #a9712a;
  border-radius: 8px;
  padding: 7px 14px;
  color: #fff;
  font-size: 1rem;
  margin-right: 8px;
  outline: none;
  transition: border .2s;
  min-width: 90px;
}
.admin-panel input:focus { border-color: #c09044;}
.admin-panel .error { color: #ff6b6b; font-size: .96rem; margin-top: 6px;}
.demo-tools { margin-top: 15px;}
.demo-btn {
  background: #a9712a;
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 8px 16px;
  margin: 0 6px 4px 6px;
  font-size: 0.98rem;
  font-weight: 600;
  transition: background 0.17s;
  cursor: pointer;
}
.demo-btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}
.demo-btn:hover { background: #8a591f;}
.logout-btn {
  color: #a9712a;
  background: none;
  border: none;
  text-decoration: underline;
  font-size: 0.97rem;
  cursor: pointer;
  margin-top: 10px;
  margin-bottom: 2px;
  transition: color 0.2s;
}
.logout-btn:hover { color: #d9a350;}
.lock-icon {
  font-size: 1.2em;
  vertical-align: middle;
  margin-right: 6px;
  color: #a9712a;
  display: inline-block;
}
.admin-hint {
  color:#a9712a;
  font-size:0.98rem;
  margin-top:8px;
}

/* Footer styling */
footer {
  position: fixed;
  bottom: 0; left: 0; width: 100%; text-align: center;
  padding: 11px 0; color: #555; font-size: .95rem;
  background: rgba(15,12,8,0.89);
}
@media (max-width: 600px) {
  .buttons { flex-direction: row; flex-wrap: wrap; gap: 10px;}
  .btn { padding: 9px 13px; font-size: 0.98rem; min-width: 85px; }
  .admin-panel { min-width: 0; padding: 13px 2vw;}
  header { margin-top: 20px; }
}