:root {
  --primary: #4361ee;
  --primary-light: #4895ef;
  /* --secondary: #3f37c9; */
  --secondary: #bbb9ef;
  --dark: #1d3557;
  --light: #f8f9fa;
  --success: #4cc9f0;
  --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
  --danger: #dc3545;
  --gray: #6c757d;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--gradient);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  line-height: 1.6;
}

.login-container {
  width: 100%;
  max-width: 450px;
}

.login-card {
  background: white;
  border-radius: 20px;
  box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.card-header {
  background: var(--gradient);
  color: white;
  padding: 30px 25px;
  text-align: center;
  position: relative;
}

.card-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M11 18c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm48 25c3.866 0 7-3.134 7-7s-3.134-7-7-7-7 3.134-7 7 3.134 7 7 7zm-43-7c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm63 31c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM34 90c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zm56-76c1.657 0 3-1.343 3-3s-1.343-3-3-3-3 1.343-3 3 1.343 3 3 3zM12 86c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm28-65c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm23-11c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-6 60c2.21 0 4-1.79 4-4s-1.79-4-4-4-4 1.79-4 4 1.79 4 4 4zm29 22c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zM32 63c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm57-13c2.76 0 5-2.24 5-5s-2.24-5-5-5-5 2.24-5 5 2.24 5 5 5zm-9-21c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM60 91c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM35 41c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2zM12 60c1.105 0 2-.895 2-2s-.895-2-2-2-2 .895-2 2 .895 2 2 2z' fill='%23ffffff' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
  opacity: 0.3;
}

.logo {
  font-size: 2.5rem;
  margin-bottom: 10px;
  display: block;
}

.card-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 5px;
  position: relative;
  z-index: 1;
}

.card-header p {
  opacity: 0.9;
  font-size: 0.95rem;
  position: relative;
  z-index: 1;
}

.card-body {
  padding: 30px;
}

.form-group {
  margin-bottom: 20px;
  position: relative;
}

.form-label {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--dark);
  display: flex;
  align-items: center;
}

.form-label i {
  margin-left: 8px;
  color: var(--primary);
}

.form-control {
  border: 2px solid #e9ecef;
  border-radius: 10px;
  padding: 12px 15px 12px 45px; /* زيادة padding من اليسار للأيقونة */
  font-size: 1rem;
  transition: all 0.3s;
  width: 100%;
  height: 50px; /* ارتفاع ثابت للحقول */
}

.form-control:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 0.25rem rgba(67, 97, 238, 0.25);
  outline: none;
}

/* تحديث تصميم الأيقونة داخل الحقول */
.input-icon {
  position: absolute;
  left: 15px;
  top: 50%; /* وضعها في المنتصف رأسيًا */
  transform: translateY(-50%); /* تعديل المركز */
  color: var(--gray);
  transition: color 0.3s;
  font-size: 1.1rem;
  z-index: 2;
}

.form-control:focus + .input-icon {
  color: var(--primary);
}

.form-check-input {
  margin-left: 10px;
}

.form-check-input:checked {
  background-color: var(--primary);
  border-color: var(--primary);
}

.form-check-label {
  color: #495057;
  cursor: pointer;
}

.btn-login {
  background: var(--gradient);
  border: none;
  color: white;
  padding: 12px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s;
  margin-top: 10px;
  cursor: pointer;
  width: 100%;
  height: 50px; /* ارتفاع ثابت للزر */
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-login:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(67, 97, 238, 0.4);
  color: white;
}

.btn-login:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.alert {
  border-radius: 10px;
  border: none;
  padding: 15px;
  margin-bottom: 20px;
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  color: var(--danger);
  border-right: 4px solid var(--danger);
}

.forgot-password {
  text-align: center;
  margin-top: 20px;
  color: var(--gray);
}

.forgot-password a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s;
}

.forgot-password a:hover {
  color: var(--secondary);
  text-decoration: underline;
}

/* تأثيرات إضافية */
.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(67, 97, 238, 0.4);
  }
  70% {
    box-shadow: 0 0 0 10px rgba(67, 97, 238, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(67, 97, 238, 0);
  }
}

/* تأثيرات للحقول عند التركيز */
.form-control.focused {
  border-color: var(--primary-light);
}

/* تصميم متجاوب */
@media (max-width: 576px) {
  .login-container {
    max-width: 100%;
  }
  
  .card-body {
    padding: 25px 20px;
  }
  
  .card-header {
    padding: 25px 20px;
  }
  
  .card-header h1 {
    font-size: 1.5rem;
  }
  
  .logo {
    font-size: 2rem;
  }
  
  .form-control {
    padding: 12px 15px 12px 40px; /* تعديل padding للأجهزة الصغيرة */
    height: 48px;
  }
  
  .input-icon {
    left: 12px;
    font-size: 1rem;
  }
}

@media (max-width: 400px) {
  body {
    padding: 10px;
  }
  
  .card-body {
    padding: 20px 15px;
  }
  
  .card-header {
    padding: 20px 15px;
  }
  
  .form-control {
    padding: 10px 12px 10px 35px;
    height: 45px;
  }
  
  .input-icon {
    left: 10px;
    font-size: 0.9rem;
  }
}

/* تأثيرات للزر عند التحميل */
@keyframes shake {
  0%, 100% { transform: translateX(0) translateY(-2px); }
  25% { transform: translateX(-5px) translateY(-2px); }
  75% { transform: translateX(5px) translateY(-2px); }
}

.btn-loading {
  position: relative;
  overflow: hidden;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* تحسين مظهر الحقول عند وجود أخطاء */
.form-control.error {
  border-color: var(--danger);
  animation: shake 0.5s;
}