/* CSS Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #1a2e49;
  --secondary: #58a6d2;
  --accent: #f76c5e;
  --background: #f9f9f9;
  --text: #333333;
  --white: #ffffff;
  --shadow: 0 4px 6px rgba(26, 46, 73, 0.1);
  --shadow-hover: 0 10px 25px rgba(26, 46, 73, 0.15);
  --transition: all 0.3s ease;
  --border-radius: 15px;
  --border-radius-small: 8px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
}

/* Typography */
h1,
h2,
h3 {
  font-family: "Playfair Display", serif;
  font-weight: 700;
  color: var(--primary);
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: 2rem;
  text-align: center;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

p {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

ul {
  padding-left: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Header and Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--primary);
  color: var(--white);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 1rem 0;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-family: "Playfair Display", serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  text-decoration: none;
  color: var(--white);
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--secondary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--secondary);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--white);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: var(--transition);
}

.mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Main Content */
.main {
  margin-top: 80px;
}

.section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Home Section */
.home {
  text-align: center;
  padding: 8rem 2rem 5rem;
  background: linear-gradient(135deg, var(--background) 0%, #e8f4f8 100%);
}

.home-content {
  max-width: 800px;
  margin: 0 auto;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--secondary);
  margin-bottom: 2rem;
}

.description {
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 3rem;
}

/* Buttons */
.cta-button {
  display: inline-block;
  background: var(--accent);
  color: var(--white);
  padding: 1rem 2rem;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.cta-button:hover {
  background: #e55a4d;
  transform: translateY(-2px);
}

.resume-link {
  display: inline-block;
  background: var(--secondary);
  color: var(--white);
  padding: 0.8rem 1.5rem;
  text-decoration: none;
  border-radius: 25px;
  margin-top: 1rem;
  transition: var(--transition);
}

.resume-link:hover {
  background: #4a94c0;
  transform: translateY(-1px);
}

/* About Section */
.profile-photo {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  outline: 8px solid rgba(26, 46, 73, 0.2);
  outline-offset: -8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.about-text {
  font-size: 1.1rem;
}

#about {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 0rem 4rem;
}

#about > h2 {
  grid-column: 2;
  text-align: left;
  margin-bottom: 1rem;
}

.about-content {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
}

/* Portfolio Section */
.portfolio {
  background: var(--white);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.portfolio-card {
  background: var(--background);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

.portfolio-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-hover);
}

.card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.card-image::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0);
  transition: var(--transition);
}

.portfolio-card:hover .card-image::after {
  background: rgba(0, 0, 0, 0.1);
}

.card-content {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.card-divider {
  height: 2px;
  width: 100%;
  background-color: rgba(247, 108, 94, 0.6);
  margin: 0.5rem 0 1rem 0;
  border-radius: 1px;
}

.card-description {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.card-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background-color: rgba(26, 46, 73, 0.1);
  color: #1a2e49;
  padding: 0.3rem 0.8rem;
  border-radius: var(--border-radius);
  font-size: 0.8rem;
  font-weight: 500;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  z-index: 2000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

.modal-content {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.8);
  transition: transform 0.3s ease;
}

.modal.show .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  color: var(--text);
}

.modal-header {
  margin-bottom: 1.5rem;
}

.modal-title {
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.centered-video {
  width: 300px;
  margin: 0 auto;
}

.centered-video video {
  width: 100%;
  display: block;
  border-radius: var(--border-radius-small);
}

/* Video Container */
.video-container {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  margin: 1rem 0;
}

.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.materials-grid figure {
  margin: 0;
}

.materials-grid img {
  width: 100%;
  border-radius: 8px;
  display: block;
}

.materials-grid figcaption {
  font-size: 0.9rem;
  opacity: 0.8;
  margin-top: 0.4rem;
}

.materials-note {
  background: #f7f9fc;
  border: 1px solid #e6ecf2;
  border-radius: 8px;
  padding: 0.85rem 1rem;
  margin: 0.25rem 0 1rem;
  font-size: 0.95rem;
}

.materials-buttons {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 0.75rem 0 1.25rem;
  text-align: center;
}

/* Desktop 3-up order */
@media (min-width: 900px) {
  .portfolio-card[data-project="3"] {
    order: 1;
  } /* Antibiotic Resistance Lesson */
  .portfolio-card[data-project="1"] {
    order: 2;
  } /* Instructional Media */
  .portfolio-card[data-project="2"] {
    order: 3;
  } /* OER Chapter */

  .portfolio-card[data-project="5"] {
    order: 4;
  } /* LMS Development */
  .portfolio-card[data-project="4"] {
    order: 5;
  } /* Learning Theories */
  .portfolio-card[data-project="6"] {
    order: 6;
  } /* Dashboards */
}

/* Contact Section */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--white);
  padding: 3rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--primary);
  font-weight: 500;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 1rem;
  border: 2px solid #e1e1e1;
  border-radius: var(--border-radius-small);
  font-family: "Inter", sans-serif;
  font-size: 1rem;
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--secondary);
}

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

.form-button {
  background: var(--accent);
  color: var(--white);
  border: none;
  padding: 1rem 2rem;
  border-radius: var(--border-radius-small);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  width: 100%;
}

.form-button:hover {
  background: #e55a4d;
  transform: translateY(-1px);
}

.form-button:disabled {
  background: #ccc;
  cursor: not-allowed;
  transform: none;
}

.form-message {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--border-radius-small);
  text-align: center;
  display: none;
}

.form-message.success {
  background: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.form-message.error {
  background: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

/* Honeypot field (spam trap) */
.hp-field {
  display: none;
}

/* Testimonials */
.testimonials {
  background: linear-gradient(135deg, var(--background) 0%, #e8f4f8 100%);
  padding: 5rem 2rem;
  text-align: center;
}

.testimonials h3 {
  font-family: "Playfair Display", serif;
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 3rem;
}

.testimonial-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.testimonial {
  background: var(--white);
  border-radius: var(--border-radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: relative;
  border-top: 4px solid var(--secondary);
}

.testimonial:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.testimonial::before {
  content: "\201C";
  position: absolute;
  top: 5px;
  left: 20px;
  font-size: 4rem;
  color: var(--secondary);
  font-family: "Playfair Display", serif;
  line-height: 1;
}

.testimonial p {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial .highlight {
  color: var(--primary);
  font-weight: 600;
}

.attribution {
  display: block;
  font-size: 0.9rem;
  color: var(--accent);
  font-style: normal;
  font-weight: 600;
  position: relative;
}

.attribution::before {
  content: "— ";
  color: var(--secondary);
}

/* Footer */
.footer {
  background-color: var(--primary);
  color: var(--white);
  padding: 3rem 2rem 1rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-section h4 {
  font-family: "Playfair Display", serif;
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--secondary);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin-bottom: 2rem;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--white);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-links a:hover {
  color: var(--secondary);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

.footer-bottom p {
  font-size: 0.9rem;
  margin: 0 0 1rem 0;
  color: var(--white);
}

.footer-actions {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-actions a {
  color: var(--secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.footer-actions a:hover {
  color: var(--white);
}

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

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow);
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu .nav-link {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-menu .nav-link:last-child {
    border-bottom: none;
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  .about-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  #about {
    display: block;
  }

  #about > h2 {
    text-align: center;
    margin-bottom: 2rem;
  }

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

  .section {
    padding: 3rem 1rem;
  }

  .home {
    padding: 6rem 1rem 3rem;
  }

  .contact-form {
    padding: 2rem 1rem;
  }

  .testimonial-cards {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

@media (max-width: 480px) {
  .nav-container {
    padding: 0 1rem;
  }

  h1 {
    font-size: 2rem;
  }

  .testimonials {
    padding: 3rem 1rem;
  }

  .testimonial {
    padding: 1.5rem;
  }

  .footer {
    padding: 2rem 1rem 1rem;
  }

  .footer-actions {
    gap: 1rem;
  }
}