/* style.css - Main Stylesheet */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #4CAF50;
  --secondary-color: #2196F3;
  --success-color: #4CAF50;
  --danger-color: #f44336;
  --background-color: #f5f5f5;
  --text-color: #333;
  --border-color: #ddd;
  --light-gray: #fafafa;
}

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

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.navbar {
  background-color: var(--primary-color);
  color: white;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.navbar h1 {
  font-size: 1.5em;
}

.navbar-links {
  display: flex;
  gap: 15px;
  align-items: center;
}

.navbar-links a,
.navbar-links button {
  color: white;
  text-decoration: none;
  padding: 8px 15px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  font-weight: 500;
}

.navbar-links a:hover,
.navbar-links button:hover {
  background: rgba(255, 255, 255, 0.4);
  transform: scale(1.05);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  letter-spacing: 0.5px;
}

.navbar-links a:active,
.navbar-links button:active {
  transform: scale(0.98);
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1em;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: #45a049;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: white;
}

.btn-secondary:hover {
  background-color: #0b7dda;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-success {
  background-color: var(--success-color);
  color: white;
}

.btn-success:hover {
  background-color: #45a049;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn-danger {
  background-color: var(--danger-color);
  color: white;
}

.btn-danger:hover {
  background-color: #da190b;
}

/* Forms */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: bold;
}

.form-group input {
  width: 100%;
  padding: 12px 20px;
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 1em;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group textarea {
  width: 100%;
  padding: 15px 20px;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 1em;
  font-family: inherit;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 5px rgba(76, 175, 80, 0.3);
}

.form-container {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  max-width: 400px;
  margin: 50px auto;
}

.form-container h2 {
  margin-bottom: 20px;
  text-align: center;
}

.form-container .form-link {
  text-align: center;
  margin-top: 15px;
}

.form-container a {
  color: var(--primary-color);
  text-decoration: none;
}

.form-container a:hover {
  text-decoration: underline;
}

.error-message {
  color: var(--danger-color);
  background-color: #ffebee;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 15px;
  display: none;
}

.success-message {
  color: var(--success-color);
  background-color: #e8f5e9;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 15px;
  display: none;
}

/* Cards */
.card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

/* Courses */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.course-card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.course-card h3 {
  margin-bottom: 10px;
  color: var(--primary-color);
}

.course-card p {
  margin-bottom: 10px;
  color: #666;
}

.lessons-count {
  font-weight: bold;
  margin-bottom: 15px;
}

.course-card .btn {
  width: 100%;
  text-align: center;
  margin-top: 10px;
}

/* Lessons */
.lessons-list {
  margin-bottom: 30px;
}

.lesson-item {
  background: white;
  padding: 20px;
  margin-bottom: 15px;
  border-radius: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  border-left: 4px solid var(--primary-color);
  transition: all 0.3s;
}

.lesson-item:hover {
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.lesson-item.completed {
  background-color: #e8f5e9;
  border-left-color: var(--success-color);
}

.lesson-item h3 {
  margin-bottom: 5px;
}

.lesson-item p {
  color: #666;
  font-size: 0.9em;
}

.lesson-content {
  flex: 1;
}

.lesson-item .btn {
  margin-left: 15px;
}

/* Badge */
.badge {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.85em;
  margin-top: 10px;
}

.completed-badge {
  background-color: var(--success-color);
  color: white;
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 10px;
  background-color: var(--border-color);
  border-radius: 5px;
  overflow: hidden;
  margin-top: 10px;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-color);
  transition: width 0.3s;
}

.progress-summary {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}

.progress-summary h3 {
  margin-bottom: 10px;
}

/* Dashboard */
.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  border-top: 4px solid var(--primary-color);
}

.stat-card h3 {
  font-size: 2em;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.stat-card p {
  color: #666;
}

/* Lesson View */
.lesson-header {
  background: white;
  padding: 30px;
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.lesson-header h2 {
  margin-bottom: 10px;
  color: var(--primary-color);
}

.lesson-header p {
  color: #666;
}

.lesson-content {
  background: white;
  padding: 30px;
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  line-height: 1.8;
}

.lesson-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.lesson-actions .btn {
  flex: 1;
  min-width: 150px;
  text-align: center;
}

/* Landing Page */
.hero {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  padding: 80px 20px;
  text-align: center;
  border-radius: 8px;
  margin-bottom: 40px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.hero:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.hero h1 {
  font-size: 2.5em;
  margin-bottom: 20px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 30px;
}

.hero-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-buttons .btn {
  padding: 15px 30px;
  font-size: 1.1em;
  background: white;
  color: var(--primary-color);
  font-weight: bold;
}

.hero-buttons .btn:hover {
  background: #f0f0f0;
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.feature {
  background: white;
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: default;
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.feature h3 {
  color: var(--primary-color);
  margin-bottom: 10px;
}

/* Responsive */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 15px;
  }

  .navbar-links {
    flex-direction: column;
    width: 100%;
  }

  .navbar-links a,
  .navbar-links button {
    width: 100%;
    text-align: center;
  }

  .hero {
    padding: 40px 20px;
  }

  .hero h1 {
    font-size: 1.8em;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .lesson-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .lesson-item .btn {
    margin-left: 0;
    margin-top: 10px;
    width: 100%;
  }

  .lesson-actions {
    flex-direction: column;
  }

  .lesson-actions .btn {
    width: 100%;
  }
}

/* Footer */
.footer {
  background-color: var(--primary-color);
  color: white;
  padding: 30px 0;
  margin-top: 50px;
  text-align: center;
}

.footer p {
  margin-bottom: 15px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 5px 10px;
  border-radius: 4px;
}

.footer-links a:hover {
  color: white;
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}