body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background-color: #f1f5f9;
}

.page {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 220px;
  background: #1e293b;
  color: #fff;
  padding: 30px 20px;
  display: flex;
  flex-direction: column;
}

.sidebar h2 {
  margin-bottom: 30px;
  font-size: 24px;
}

.sidebar nav a {
  color: #cbd5e1;
  text-decoration: none;
  display: block;
  margin: 15px 0;
  transition: 0.2s;
}

.sidebar nav a:hover,
.sidebar nav a.active {
  color: #fff;
  font-weight: bold;
}

.content {
  flex: 1;
  padding: 40px;
  background: #f8fafc;
}

header h1 {
  margin-bottom: 30px;
  color: #0f172a;
  font-size: 28px;
}

.sms-form {
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  max-width: 700px;
}

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

label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: #334155;
}

input,
textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 16px;
  background-color: #f9fafb;
  resize: vertical;
}

.send-button {
  padding: 14px 22px;
  font-size: 16px;
  background-color: #4f46e5;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: 0.3s;
}

.send-button:hover {
  background-color: #4338ca;
}

.status-msg {
  margin-top: 20px;
  padding: 12px;
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #34d399;
  border-radius: 8px;
  max-width: 700px;
}

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

@media (max-width: 768px) {
  .page {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    flex-direction: row;
    justify-content: space-around;
    padding: 15px;
  }

  .sidebar h2 {
    display: none;
  }

  .sidebar nav {
    display: flex;
    gap: 15px;
  }

  .sidebar nav a {
    margin: 0;
    font-size: 14px;
  }

  .content {
    padding: 20px;
  }

  .sms-form {
    padding: 20px;
  }

  header h1 {
    font-size: 22px;
  }
}

@media (max-width: 480px) {
  .sms-form {
    padding: 16px;
  }

  header h1 {
    font-size: 20px;
  }

  .send-button {
    font-size: 14px;
    padding: 10px 16px;
  }
}