body {
  background: linear-gradient(135deg, #e0f7fa, #f1f8e9);
  background-attachment: fixed;
  background-size: cover;
  font-family: "Cairo", sans-serif;
}

/* زخرفة باستخدام SVG */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("https://www.transparenttextures.com/patterns/graphy.png");
  opacity: 0.07;
  z-index: -1;
}

.card {
  background-color: #ffffff;
  border-radius: 20px;
  border: 1px solid #dee2e6;
}

input[type="datetime-local"] {
  padding: 10px 12px;
  font-size: 1.1rem;
  font-family: "Cairo", sans-serif;
  border: 2px solid #0d6efd; /* لون إطار أزرق Bootstrap */
  border-radius: 8px;
  background-color: #f8f9fa; /* خلفية فاتحة */
  color: #212529; /* لون النص */
  transition: border-color 0.3s ease;
}

input[type="datetime-local"]:focus {
  border-color: #198754; /* تغيير لون الإطار عند التركيز (أخضر Bootstrap) */
  outline: none;
  background-color: #ffffff;
}

.visit-card {
  background: white;
  backdrop-filter: blur(2px);
  border-radius: 20px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
}
#topicsContainer .card {
  transition: 0.3s ease;
}

#topicsContainer .card:hover {
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
}

textarea {
  resize: none;
}

.btn {
  transition: all 0.3s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

/* تأثير ripple عند الضغط */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 100px;
  height: 100px;
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
  background-color: rgba(255, 255, 255, 0.5);
  pointer-events: none;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

.ripple:active::after {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: ripple-animation 0.6s linear;
}

/* أزرار Material Design */
.btn-material-green {
  background-color: #00c853;
  color: white;
  border: none;
}

.btn-material-green:hover {
  background-color: #00b140;
}

.btn-material-light {
  background-color: #ffffff;
  color: #007bff;
  border: 2px solid #007bff;
}

.btn-material-light:hover {
  background-color: #e6f0ff;
}

.form-control,
.form-select {
  border-radius: 12px;
  border: 1px solid #ced4da;
  transition: box-shadow 0.2s ease-in-out;
}

.form-control:focus,
.form-select:focus {
  box-shadow: 0 0 0 0.2rem rgba(0, 200, 83, 0.25);
  border-color: #00c853;
}

.visit-card {
  border-left: 6px solid #00c853;
  transition: box-shadow 0.3s ease;
}
.visit-card:hover {
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

/* تأثير ripple */
.ripple {
  position: relative;
  overflow: hidden;
}
.ripple::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  width: 100px;
  height: 100px;
  transform: scale(0);
  animation: ripple-animation 0.6s linear;
  background-color: rgba(255, 255, 255, 0.4);
  pointer-events: none;
}
@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}
.ripple:active::after {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: ripple-animation 0.6s linear;
}

/* زر صغير وأنيق */
.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
}