/* ========== Global Styles ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #2c3e50;
  --secondary-color: #3498db;
  --accent-color: #e74c3c;
  --light-bg: #ecf0f1;
  --text-color: #2c3e50;
  --border-color: #bdc3c7;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text-color);
  background-color: #f5f7fa;
  line-height: 1.6;
}

/* ========== Header ========== */
header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 1rem 2rem;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content h1 {
  font-size: 1.8rem;
  margin-bottom: 0.2rem;
}

.header-content p {
  font-size: 0.9rem;
  opacity: 0.9;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
}

/* ========== Sidebar Menu ========== */
.container {
  display: flex;
  min-height: calc(100vh - 80px);
}

aside {
  width: 250px;
  background-color: var(--primary-color);
  color: white;
  padding: 2rem 0;
  box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
  overflow-y: auto;
  transition: transform 0.3s ease;
}

aside nav ul {
  list-style: none;
}

aside nav li {
  margin: 0;
}

aside nav a {
  display: block;
  padding: 1rem 2rem;
  color: white;
  text-decoration: none;
  border-left: 4px solid transparent;
  transition: all 0.3s ease;
}

aside nav a:hover {
  background-color: var(--secondary-color);
  border-left-color: var(--accent-color);
  padding-left: 2.3rem;
}

aside nav a.active {
  background-color: var(--secondary-color);
  border-left-color: var(--accent-color);
}

/* ========== Main Content ========== */
main {
  flex: 1;
  padding: 2rem;
  background-color: #f5f7fa;
  overflow-y: auto;
}

.page {
  display: none;
  animation: fadeIn 0.5s ease-in;
}

.page.active {
  display: block;
}

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

/* ========== Page Sections ========== */
.page h2 {
  color: var(--secondary-color);
  margin-bottom: 1.5rem;
  font-size: 2rem;
  border-bottom: 3px solid var(--secondary-color);
  padding-bottom: 0.5rem;
}

.page h3 {
  color: var(--primary-color);
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.page p {
  margin-bottom: 1rem;
  color: #555;
}

.page img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* ========== Cards ========== */
.cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.card {
  background: white;
  border-radius: 8px;
  padding: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card h4 {
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.card p {
  color: #666;
  font-size: 0.95rem;
}

/* ========== Buttons ========== */
button, a.button {
  background-color: var(--secondary-color);
  color: white;
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  text-decoration: none;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
  margin: 0.5rem 0;
}

button:hover, a.button:hover {
  background-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* ========== Footer ========== */
footer {
  background-color: var(--primary-color);
  color: white;
  text-align: center;
  padding: 1.5rem;
  margin-top: 2rem;
  position: relative;
}

footer p {
  margin: 0.5rem 0;
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  header {
    flex-wrap: wrap;
  }

  .container {
    flex-direction: column;
  }

  aside {
    width: 100%;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    transition: max-height 0.3s ease;
  }

  aside.active {
    max-height: 500px;
    padding: 2rem 0;
  }

  aside nav a {
    padding: 1rem 1.5rem;
  }

  main {
    padding: 1.5rem;
  }

  .page h2 {
    font-size: 1.5rem;
  }

  .cards-container {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

/* ========== Contact Form ========== */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--primary-color);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: 5px;
  font-family: inherit;
  font-size: 1rem;
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}