@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap");
:root {
  --primary-color: #4a90e2;
  --secondary-color: #50e3c2;
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
}
body {
  font-family: "Poppins", sans-serif;
  background-image: url("/static/bg.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  color: var(--dark-color);
  position: relative;
}
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  z-index: -1;
}
.login-container {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  padding: 50px 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 450px;
  text-align: center;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.login-container h1 {
  color: white;
  font-size: 2.5em;
  margin-bottom: 5px;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
.login-container .tagline {
  color: var(--light-color);
  font-weight: 300;
  margin-bottom: 40px;
  font-size: 1em;
  letter-spacing: 1px;
}
.input-group {
  margin-bottom: 25px;
  text-align: left;
}
.input-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 400;
  color: var(--light-color);
}
.input-group input {
  width: 100%;
  padding: 15px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 10px;
  box-sizing: border-box;
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: border-color 0.3s, background-color 0.3s;
}
.input-group input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}
.input-group input:focus {
  border-color: var(--light-color);
  background-color: rgba(255, 255, 255, 0.2);
  outline: none;
}
.btn {
  width: 100%;
  padding: 15px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1.1em;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.2s, box-shadow 0.3s;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}
.btn:hover {
  background-color: #3b7ad1;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}
.footer-text {
  margin-top: 40px;
  font-size: 0.9em;
  color: rgba(255, 255, 255, 0.7);
}

.flash-stack {
  width: 100%;
  margin: 8px 0 14px;
}

.alert {
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 500;
  margin-bottom: 8px;
}

.alert.info {
  background: #e8f1ff;
  color: #0f3d8a;
}
.alert.success {
  background: #ecfdf5;
  color: #065f46;
}
.alert.warning {
  background: #fffbeb;
  color: #92400e;
}
.alert.danger {
  background: #fef2f2;
  color: #991b1b;
}