:root {
  --green-dark: #003023;
  --green-light: #83C441;
  --white: #FFFFFF;
}

body {
  margin: 0;
  background-color: var(--green-dark);
  color: var(--white);
  font-family: 'Cairo', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.app-container {
  width: 95%;
  max-width: 500px;
  height: 90vh;
  background-color: var(--green-dark);
  border-radius: 28px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 40px rgba(0,0,0,0.3);
  overflow: hidden;
}

.top-bar {
  text-align: center;
  padding: 18px;
  font-size: 1.4rem;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#content {
  flex: 1;
  padding: 25px;
  overflow-y: auto;
}

.welcome {
  text-align: center;
  margin-top: 80px;
}

.welcome h2 {
  font-size: 2rem;
  color: var(--white);
}

.welcome p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
}

/* شريط التنقل السفلي */
.bottom-nav {
  display: flex;
  justify-content: space-around;
  align-items: center;
  background-color: var(--green-dark);
  padding: 14px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.nav-btn {
  background: none;
  border: none;
  color: var(--green-light);
  font-size: 26px;
  cursor: pointer;
  transition: 0.3s ease;
}

.nav-btn.active, .nav-btn:hover {
  color: var(--white);
  transform: scale(1.15);
}

/* تنسيقات الأيقونات */
.nav-btn i {
  width: 26px;
  height: 26px;
}

/* حركة بسيطة */
.section {
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}