/* ================== Base ================== */
body {
  font-family: 'Poppins', sans-serif;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: #fff;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
}

.login-container {
  display: flex;
  height: 90vh;
}

/* ---------------- Slider ---------------- */
.login-slider {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.login-slider .slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  animation: fade 15s infinite;
  will-change: opacity;
}

.login-slider .slide:nth-child(1) { animation-delay: 0s; }
.login-slider .slide:nth-child(2) { animation-delay: 5s; }
.login-slider .slide:nth-child(3) { animation-delay: 10s; }
.login-slider .slide:nth-child(4) { animation-delay: 15s; }

.login-slider .slide img {
  width: 100%;
  height: 100%;
  object-fit: cover; /* plus esthétique que fill */
  object-position: center;
  display: block;
}

.login-slider h2 {
  position: absolute;
  left: 30px;
  font-size: 2rem;
  font-weight: bold;
  color: #fff;
  text-shadow: 0px 3px 8px rgba(0,0,0,0.6);
  animation: slideUp 1s ease-in-out;
}

@keyframes slideUp {
  from { transform: translateY(50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes fade {
  0%   { opacity: 0; }
  6.66% { opacity: 1; }
  33.33% { opacity: 1; }
  40%  { opacity: 0; }
  100% { opacity: 0; }
}

/* ---------------- Formulaire ---------------- */
.login-form {
  flex: 0.6;
  background: #fff;
  color: #333;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 40px;
}

.form-box {
  width: 100%;
  max-width: 400px;
}

.form-box h3 {
  text-align: center;
  font-weight: 700;
  color: #203a43;
  margin-bottom: 20px;
}

.form-floating input {
  border-radius: 12px;
  padding-left: 40px;
}

.form-floating label {
  padding-left: 40px;
}

.input-icon {
  position: absolute;
  top: 50%;
  left: 12px;
  transform: translateY(-50%);
  color: #888;
}

.btn-login {
  width: 100%;
  padding: 12px;
  border-radius: 12px;
  background: linear-gradient(135deg, #1d4350, #a43931);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  transition: 0.3s;
}

.btn-login:hover {
  background: linear-gradient(135deg, #a43931, #1d4350);
}

.alert {
  border-radius: 12px;
  text-align: center;
}

/* ================== Responsive ================== */

/* Tablette & mobile */
@media (max-width: 992px) {
  .login-container {
    flex-direction: column; /* slider au dessus, formulaire en dessous */
    height: auto;
  }

  .login-slider {
    height: 200px;
  }

  .login-form {
    flex: none;
    padding: 30px 20px;
  }

  .form-box {
    max-width: 100%;
  }

  .login-slider h2 {
    font-size: 1.5rem;
    left: 20px;
  }
}

/* Petits écrans */
@media (max-width: 576px) {
  .login-slider {
    height: 150px;
  }

  .btn-login {
    font-size: 0.95rem;
    padding: 10px;
  }

  .form-floating input {
    padding-left: 35px;
  }

  .form-floating label {
    padding-left: 35px;
    font-size: 0.85rem;
  }

  .input-icon {
    font-size: 1rem;
  }
}