body {
  margin: 0;
  font-family: Tahoma, Arial;
  direction: rtl;
  background: #f3f4f6;
  text-align: center;
  color: #222;
}

/* الهيدر */
.hero {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: white;
  padding: 90px 20px;
}

.hero h1 {
  font-size: 52px;
  margin: 0;
}

.hero span {
  font-weight: 300;
}

.start-btn {
  display: inline-block;
  margin-top: 25px;
  background: white;
  color: #203a43;
  padding: 12px 35px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
}

/* قسم المعلومات */
.info {
  padding: 35px 20px;
}

.telegram-btn {
  display: inline-block;
  background: #0088cc;
  color: white;
  padding: 10px 25px;
  border-radius: 25px;
  text-decoration: none;
  margin: 10px 0;
}

/* الكروت */
.subjects {
  padding: 20px;
}

.card {
  background: white;
  margin: 18px auto;
  max-width: 360px;
  padding: 18px;
  border-radius: 18px;
  box-shadow: 0 10px 25px rgba(0,0,0,.12);
}

.card h3 {
  margin-bottom: 10px;
}

.card button {
  background: #203a43;
  color: white;
  border: none;
  padding: 9px 22px;
  border-radius: 25px;
  cursor: pointer;
}

/* القائمة */
.content {
  display: none;
  margin-top: 12px;
}

.content a {
  display: block;
  padding: 7px;
  color: #203a43;
  text-decoration: none;
  font-weight: bold;
}

/* الاختبارات */
.exam {
  background: #e0f2fe;
  padding: 45px 20px;
}

.exam a {
  background: #0284c7;
  color: white;
  padding: 12px 35px;
  border-radius: 30px;
  text-decoration: none;
}

/* الفوتر */
footer {
  background: #111;
  color: #bbb;
  padding: 20px;
  margin-top: 30px;
}

/* تنبيه البداية */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  display: flex;
  justify-content: center;
  align-items: center;
}

.alert-box {
  background: white;
  padding: 25px;
  border-radius: 18px;
  max-width: 320px;
}