:root {
  --glass-bg: rgba(255,255,255,0.15);
  --glass-border: rgba(255,255,255,0.25);
  --text: #fff;
  --radius: 14px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --glass-bg: rgba(0,0,0,0.25);
    --glass-border: rgba(255,255,255,0.1);
    --text: #eee;
  }
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: linear-gradient(135deg, #0f172a, #1e293b, #3b82f6);
  background-size: 300% 300%;
  animation: bgshift 12s infinite;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  color: var(--text);
}

@keyframes bgshift {
  0% {background-position: 0 50%;}
  50% {background-position: 100% 50%;}
  100% {background-position: 0 50%;}
}

.login-wrapper {
  width: 100%;
  max-width: 420px;
  padding: 20px;
}

.glass-card {
  padding: 35px;
  border-radius: var(--radius);
  background: var(--glass-bg);
  backdrop-filter: blur(14px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.2);
  text-align: center;
}

.glass-card h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.subtitle {
  font-size: 14px;
  opacity: 0.7;
  margin-bottom: 25px;
}

.input {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  background: rgba(255,255,255,0.1);
  color: var(--text);
  margin-bottom: 18px;
  outline: none;
}

.btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius);
  background: #3b82f6;
  color: white;
  cursor: pointer;
  font-size: 16px;
  transition: 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

.register-link {
  margin-top: 14px;
  display: inline-block;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 14px;
}

#notification-container {
  position: fixed;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  width: 90%;
  max-width: 420px;
  pointer-events: none;
}

.toast-error {
  background: rgba(255, 77, 77, 0.2);
  border: 1px solid rgba(255,77,77,0.4);
  padding: 12px 16px;
  border-radius: var(--radius);
  text-align: center;
  max-width: 90vw;
  margin: 10px auto;
  backdrop-filter: blur(10px);
  position: relative;
}