:root {
  --utec-primary: #00ade0;
  --utec-secondary: #00c7ff;
  --utec-dark: #005a75;
  --text-dark: #333;
  --text-light: #666;
  --bg-light: #f5f5f5;
  --white: #ffffff;
  --error: #dc3545;
  --success: #28a745;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-light);
  padding-top: 70px;
}

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

.navbar {
  background-color: var(--utec-primary);
  padding: 1rem 0;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

.navbar-brand {
  color: var(--white);
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
}

.navbar-logo {
  height: 52px;
  width: auto;
  margin-right: 10px;
  vertical-align: middle;
  background-color: white;
  border-radius: 50%;
  padding: 6px;
}

.hero {
  background: linear-gradient(135deg, var(--utec-primary) 0%, var(--utec-secondary) 100%);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.btn {
  display: inline-block;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 5px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--bg-light);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

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

.btn-secondary:hover {
  background-color: var(--utec-dark);
}

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

.features {
  padding: 80px 0;
  background-color: var(--white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  text-align: center;
  padding: 30px;
  border-radius: 10px;
  background-color: var(--bg-light);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.feature-icon {
  font-size: 3rem;
  color: var(--utec-primary);
  margin-bottom: 20px;
}

.form-container {
  max-width: 400px;
  margin: 50px auto;
  padding: 40px;
  background-color: var(--white);
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

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

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-dark);
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  font-size: 1rem;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  transition: border-color 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--utec-primary);
}

.form-footer {
  margin-top: 20px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-light);
}

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

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

.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
}

.modal-content {
  background-color: var(--white);
  margin: 15% auto;
  padding: 30px;
  border-radius: 10px;
  width: 90%;
  max-width: 400px;
  text-align: center;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  color: var(--text-light);
}

.modal-close:hover {
  color: var(--text-dark);
}

.error-message {
  color: var(--error);
  margin-top: 10px;
  font-size: 0.9rem;
}

.attempt-alert {
  margin-top: 15px;
  padding: 12px;
  border-radius: 5px;
  font-size: 0.9rem;
  text-align: center;
  animation: slideIn 0.3s ease-out;
}

.attempt-alert.warning {
  background-color: #fff3cd;
  color: #856404;
  border: 1px solid #ffeaa7;
}

.attempt-alert.error {
  background-color: #ffebee;
  color: #d32f2f;
  border: 1px solid #ffcdd2;
}

.attempt-alert.blocked {
  background-color: #fce4ec;
  color: #ad1457;
  border: 1px solid #f8bbd9;
}

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

.countdown-timer {
  font-weight: bold;
  font-size: 1.1rem;
  margin-top: 8px;
}

.modal-content.blocked h3 {
  color: var(--error) !important;
}

.modal-content.blocked {
  border-top: 4px solid var(--error);
}

.success-container {
  text-align: center;
  padding: 80px 0;
}

.success-icon {
  font-size: 5rem;
  color: var(--success);
  margin-bottom: 20px;
}

.terms-content {
  max-width: 800px;
  margin: 50px auto;
  padding: 40px;
  background-color: var(--white);
  border-radius: 10px;
  line-height: 1.8;
}

.terms-content h2 {
  color: var(--utec-primary);
  margin-bottom: 20px;
}

.terms-content h3 {
  color: var(--utec-dark);
  margin-top: 30px;
  margin-bottom: 15px;
}

.loading {
  display: none;
  text-align: center;
  margin: 20px 0;
}

.spinner {
  border: 3px solid rgba(0,0,0,0.1);
  border-radius: 50%;
  border-top: 3px solid var(--utec-primary);
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.button-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
  margin-right: 8px;
}

#submitButton {
  position: relative;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#submitButton:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* UTEC Sites Section */
.utec-sites {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.sites-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.site-card {
  background-color: var(--white);
  border-radius: 10px;
  padding: 30px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-left: 4px solid var(--utec-primary);
}

.site-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.site-card h3 {
  color: var(--utec-dark);
  margin-bottom: 15px;
  font-size: 1.3rem;
}

.site-card p {
  color: var(--text-light);
  margin-bottom: 20px;
  font-size: 0.95rem;
}

.site-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.site-links a {
  background-color: var(--utec-primary);
  color: var(--white);
  padding: 8px 15px;
  text-decoration: none;
  border-radius: 5px;
  font-size: 0.9rem;
  transition: all 0.3s ease;
}

.site-links a:hover {
  background-color: var(--utec-dark);
  transform: translateY(-1px);
}

/* Career Requirements Section */
.career-requirements {
  padding: 80px 0;
  background-color: var(--white);
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.requirement-card {
  background-color: var(--bg-light);
  border-radius: 10px;
  padding: 30px;
  transition: transform 0.3s ease;
  border-top: 4px solid var(--utec-secondary);
}

.requirement-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.requirement-card h3 {
  color: var(--utec-dark);
  margin-bottom: 20px;
  font-size: 1.3rem;
}

.requirement-card p {
  color: var(--text-dark);
  margin-bottom: 15px;
  line-height: 1.6;
}

.requirement-card ul {
  padding-left: 20px;
  color: var(--text-dark);
}

.requirement-card ul li {
  margin-bottom: 8px;
}

.requirement-card a {
  color: var(--utec-primary);
  font-weight: 600;
}

.requirement-card a:hover {
  color: var(--utec-dark);
}

/* Admision Section */
.admision-section {
  padding: 80px 0;
  background-color: var(--bg-light);
}

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

.admision-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.admision-info, .admision-documentacion {
  background-color: var(--white);
  border-radius: 15px;
  padding: 35px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.admision-info:hover, .admision-documentacion:hover {
  transform: translateY(-5px);
}

.admision-info h3, .admision-documentacion h3 {
  color: var(--utec-primary);
  margin-bottom: 20px;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.admision-info p, .admision-documentacion p {
  color: var(--text-dark);
  line-height: 1.6;
  margin-bottom: 20px;
}

.admision-details, .admision-movilidad, .admision-cronograma {
  background-color: var(--bg-light);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 25px;
  border-left: 4px solid var(--utec-secondary);
}

.admision-details h4, .admision-movilidad h4, .admision-cronograma h4 {
  color: var(--utec-dark);
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.admision-details ul, .admision-movilidad ul, .admision-cronograma ul {
  margin: 0;
  padding-left: 20px;
}

.admision-details li, .admision-movilidad li, .admision-cronograma li {
  margin-bottom: 8px;
  color: var(--text-dark);
  line-height: 1.5;
}

.admision-movilidad a {
  color: var(--utec-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

.admision-movilidad a:hover {
  color: var(--utec-dark);
  text-decoration: underline;
}

.documentos-lista {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 25px;
  margin-top: 20px;
}

.documento-item {
  background-color: var(--bg-light);
  border-radius: 10px;
  padding: 20px;
  border-left: 4px solid var(--utec-primary);
}

.documento-item h4 {
  color: var(--utec-dark);
  margin-bottom: 15px;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.documento-item ul {
  margin: 0;
  padding-left: 20px;
}

.documento-item li {
  margin-bottom: 8px;
  color: var(--text-dark);
  line-height: 1.5;
}

/* Presencial Section */
.presencial-section {
  padding: 80px 0;
  background-color: var(--white);
}

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

.presencial-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: 40px;
  margin-top: 40px;
}

.presencial-info, .presencial-contacto {
  background-color: var(--bg-light);
  border-radius: 15px;
  padding: 35px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.presencial-info:hover, .presencial-contacto:hover {
  transform: translateY(-5px);
}

.presencial-info h3, .presencial-contacto h3 {
  color: var(--utec-primary);
  margin-bottom: 20px;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.presencial-info p, .presencial-contacto p {
  color: var(--text-dark);
  line-height: 1.6;
  margin-bottom: 20px;
}

.presencial-details, .presencial-adicional {
  background-color: var(--white);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 25px;
  border-left: 4px solid var(--utec-secondary);
}

.presencial-details h4, .presencial-adicional h4 {
  color: var(--utec-dark);
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.presencial-details ul, .presencial-adicional ul {
  margin: 0;
  padding-left: 20px;
}

.presencial-details li, .presencial-adicional li {
  margin-bottom: 8px;
  color: var(--text-dark);
  line-height: 1.5;
}

.sede-contactos {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.sede-item {
  background-color: var(--white);
  border-radius: 8px;
  padding: 15px;
  border-left: 4px solid var(--utec-primary);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sede-nombre {
  font-weight: 600;
  color: var(--utec-dark);
  font-size: 0.95rem;
}

.sede-item a {
  color: var(--utec-primary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.sede-item a:hover {
  color: var(--utec-dark);
  text-decoration: underline;
}

/* Services Section */
.services {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.location-card {
  background-color: var(--white);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.location-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.location-card h3 {
  color: var(--utec-primary);
  margin-bottom: 25px;
  font-size: 1.4rem;
  border-bottom: 2px solid var(--utec-secondary);
  padding-bottom: 10px;
}

.service-group {
  margin-bottom: 25px;
}

.service-group h4 {
  color: var(--utec-dark);
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.service-group ul {
  padding-left: 0;
  list-style: none;
}

.service-group ul li {
  background-color: var(--bg-light);
  margin-bottom: 8px;
  padding: 10px 15px;
  border-radius: 5px;
  font-size: 0.95rem;
  color: var(--text-dark);
  border-left: 3px solid var(--utec-secondary);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .form-container {
    margin: 20px auto;
    padding: 30px 20px;
  }
  
  .navbar-brand {
    font-size: 1.25rem;
  }
  
  .sites-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .requirements-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .site-card,
  .requirement-card,
  .location-card {
    padding: 20px;
  }
  
  .admision-content {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .admision-info, .admision-documentacion {
    padding: 25px;
  }
  
  .documentos-lista {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .presencial-content {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  
  .presencial-info, .presencial-contacto {
    padding: 25px;
  }
  
  .sede-contactos {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* Welcome page styles */
.welcome-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.welcome-header {
  text-align: center;
  margin-bottom: 30px;
  padding: 20px;
  background-color: var(--white);
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.welcome-header h1 {
  color: var(--utec-primary);
  margin-bottom: 10px;
}

.welcome-header p {
  color: var(--text-light);
  font-size: 1.1rem;
}

.progress-section {
  background-color: var(--white);
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 30px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.progress-controls {
  display: flex;
  gap: 15px;
  align-items: center;
}

.progress-bar-container {
  background-color: #e0e0e0;
  border-radius: 12px;
  height: 24px;
  overflow: hidden;
  position: relative;
  margin: 20px 0;
}

.progress-bar {
  background: linear-gradient(90deg, #ffc107, #28a745);
  height: 100%;
  border-radius: 12px;
  transition: width 1s ease;
  position: relative;
}

.progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-weight: bold;
  font-size: 14px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
  z-index: 1;
}

.congratulations-message {
  background: linear-gradient(135deg, #28a745, #20c997);
  border-radius: 15px;
  padding: 25px;
  margin: 20px 0;
  text-align: center;
  color: white;
  box-shadow: 0 8px 25px rgba(40, 167, 69, 0.3);
  animation: congratulationsSlide 0.6s ease-out;
}

.congratulations-content {
  max-width: 500px;
  margin: 0 auto;
}

.congratulations-icon {
  font-size: 3.5rem;
  margin-bottom: 15px;
  animation: bounce 2s infinite;
}

.congratulations-message h3 {
  font-size: 1.8rem;
  margin-bottom: 10px;
  font-weight: 700;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.congratulations-message p {
  font-size: 1.1rem;
  margin: 0;
  opacity: 0.95;
  line-height: 1.5;
}

@keyframes congratulationsSlide {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.progress-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.progress-stat {
  text-align: center;
  padding: 15px;
  background-color: var(--bg-light);
  border-radius: 8px;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--utec-primary);
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
}

.subjects-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

.subjects-table th,
.subjects-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid #e0e0e0;
}

.subjects-table th {
  background-color: var(--bg-light);
  font-weight: 600;
  color: var(--utec-dark);
}

.subject-passed {
  background-color: #e8f5e9;
}

.subject-pending {
  background-color: #fff3e0;
}

.refresh-info {
  background-color: var(--bg-light);
  padding: 15px;
  border-radius: 8px;
  text-align: center;
  margin-top: 20px;
}

.btn-refresh {
  background: linear-gradient(135deg, var(--utec-primary), var(--utec-secondary));
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.btn-refresh:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 173, 224, 0.4);
}

.btn-refresh:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.plan-selector {
  margin-bottom: 20px;
}

.plan-selector select {
  padding: 10px;
  border: 2px solid #e0e0e0;
  border-radius: 5px;
  font-size: 1rem;
  min-width: 200px;
}

/* Mobile responsive styles for welcome page */
@media (max-width: 768px) {
  .welcome-container {
    padding: 10px;
  }
  
  .welcome-header {
    padding: 15px;
    margin-bottom: 20px;
  }
  
  .welcome-header h1 {
    font-size: 1.5rem;
  }
  
  .welcome-header p {
    font-size: 1rem;
  }
  
  .progress-section {
    padding: 20px 15px;
    margin-bottom: 20px;
  }
  
  .progress-header {
    flex-direction: column;
    gap: 15px;
    align-items: flex-start;
  }
  
  .progress-header h2 {
    font-size: 1.3rem;
  }
  
  .progress-controls {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  
  .progress-bar-container {
    margin: 15px 0;
    height: 30px !important;
    background-color: #e0e0e0 !important;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
  }
  
  .progress-bar {
    background: linear-gradient(90deg, #ffc107, #28a745) !important;
    height: 100% !important;
    border-radius: 15px;
    transition: width 1s ease;
    position: relative;
    min-width: 2px;
  }
  
  .progress-text {
    position: absolute !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) !important;
    color: white !important;
    font-weight: bold;
    font-size: 16px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    z-index: 2;
  }
  
  .progress-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }
  
  .progress-stat {
    padding: 12px;
  }
  
  .stat-number {
    font-size: 1.2rem;
  }
  
  .stat-label {
    font-size: 0.8rem;
  }
  
  .subjects-table {
    font-size: 0.9rem;
  }
  
  .subjects-table th,
  .subjects-table td {
    padding: 8px 6px;
  }
  
  .semester-header td {
    text-align: left !important;
  }
  
  .subjects-table th:first-child,
  .subjects-table td:first-child {
    position: sticky;
    left: 0;
    background-color: var(--white);
    z-index: 1;
  }
  
  .subjects-table th:first-child {
    background-color: var(--utec-primary);
  }
  
  /* Disable sticky column on mobile */
  @media (max-width: 768px) {
    .subjects-table th:first-child,
    .subjects-table td:first-child {
      position: static;
      left: auto;
      z-index: auto;
    }
  }
  
  .refresh-info {
    padding: 12px;
  }
  
  .btn-refresh {
    padding: 10px 20px;
    font-size: 0.9rem;
    width: 100%;
  }
  
  .plan-selector {
    margin-bottom: 15px;
  }
  
  .plan-selector select {
    width: 100%;
    padding: 12px;
    font-size: 1rem;
  }
  
  .plan-selector label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--utec-dark);
  }
  
  /* Table horizontal scroll for mobile */
  .table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .subjects-table {
    min-width: 600px;
  }
  
  /* Modal adjustments for mobile */
  .modal-content {
    width: 95%;
    margin: 20% auto;
    padding: 20px;
  }
  
  .congratulations-message {
    padding: 20px 15px;
    margin: 15px 0;
  }
  
  .congratulations-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
  }
  
  .congratulations-message h3 {
    font-size: 1.4rem;
    margin-bottom: 8px;
  }
  
  .congratulations-message p {
    font-size: 1rem;
  }
  
  .modal-content h3 {
    font-size: 1.2rem;
  }
  
  .modal-content p {
    font-size: 0.9rem;
  }
  
  .modal-content input {
    padding: 12px;
    font-size: 1rem;
  }
  
  .modal-content button {
    padding: 10px 16px;
    font-size: 0.9rem;
  }
  
  /* Loading indicator adjustments */
  .loading {
    padding: 15px;
  }
  
  .loading p {
    font-size: 0.9rem;
  }
  
  /* No data message adjustments */
  .refresh-info p {
    font-size: 0.9rem;
    margin-bottom: 8px;
  }
  
  .semester-header td {
    text-align: left !important;
  }
}

/* Extra small screens (phones in portrait) */
@media (max-width: 480px) {
  .welcome-container {
    padding: 5px;
  }
  
  .progress-section {
    padding: 15px 10px;
  }
  
  .progress-stats {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  
  .subjects-table {
    font-size: 0.8rem;
  }
  
  .subjects-table th,
  .subjects-table td {
    padding: 6px 4px;
  }
  
  .btn-refresh {
    padding: 12px 16px;
    font-size: 0.85rem;
  }
  
  .modal-content {
    width: 98%;
    margin: 10% auto;
    padding: 15px;
  }
  
  .congratulations-message {
    padding: 15px 10px;
    margin: 10px 0;
  }
  
  .congratulations-icon {
    font-size: 2rem;
    margin-bottom: 8px;
  }
  
  .congratulations-message h3 {
    font-size: 1.2rem;
    margin-bottom: 6px;
  }
  
  .congratulations-message p {
    font-size: 0.9rem;
    line-height: 1.4;
  }
  
  .semester-header td {
    text-align: left !important;
  }
}

/* AI Assistant Styles */
#assistant-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

#assistant-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
}

#assistant-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--utec-primary), var(--utec-secondary));
  border: none;
  cursor: pointer;
  font-size: 24px;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 173, 224, 0.3);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

#assistant-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 173, 224, 0.4);
}

#assistant-popup {
  display: none;
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 480px;
  height: 600px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  flex-direction: column;
  overflow: visible;
}

#assistant-header {
  background: linear-gradient(135deg, var(--utec-primary), var(--utec-secondary));
  color: white;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#assistant-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

#assistant-header-buttons {
  display: flex;
  gap: 8px;
}

#assistant-header-buttons button {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s ease;
}

#assistant-header-buttons button:hover {
  background: rgba(255, 255, 255, 0.3);
}

#assistant-messages {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  background: #f8f9fa;
}

.assistant-empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}

.assistant-empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.assistant-empty-state h4 {
  color: var(--utec-dark);
  margin-bottom: 12px;
  font-size: 18px;
}

.assistant-empty-state p {
  font-size: 14px;
  line-height: 1.5;
}

.message {
  margin-bottom: 16px;
  display: flex;
  animation: messageSlide 0.3s ease-out;
}

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

.message-content {
  max-width: 80%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.4;
  word-wrap: break-word;
}

.user-message {
  justify-content: flex-end;
}

.user-message .message-content {
  background: var(--utec-primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.assistant-message {
  justify-content: flex-start;
}

.assistant-message .message-content {
  background: white;
  color: var(--text-dark);
  border: 1px solid #e0e0e0;
  border-bottom-left-radius: 4px;
}

.assistant-message.loading .message-content {
  background: #e3f2fd;
  color: #1976d2;
  font-style: normal;
  display: flex;
  align-items: center;
  font-weight: 500;
  border-color: #bbdefb;
}

.loading-text {
  margin-right: 2px;
}

.loading-dots {
  display: inline-flex;
}

.loading-dots span {
  display: inline-block;
  animation: loadingDot 1.4s infinite ease-in-out both;
  width: 4px;
}

.loading-dots span:nth-child(1) {
  animation-delay: -0.32s;
}

.loading-dots span:nth-child(2) {
  animation-delay: -0.16s;
}

@keyframes loadingDot {
  0%, 80%, 100% {
    opacity: 0.3;
  }
  40% {
    opacity: 1;
  }
}

.assistant-message.error .message-content {
  background: #ffebee;
  color: var(--error);
  border-color: #ffcdd2;
}

.message-content code {
  background: rgba(0, 0, 0, 0.1);
  padding: 2px 4px;
  border-radius: 3px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
}

.message-content pre {
  background: rgba(0, 0, 0, 0.1);
  padding: 8px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 8px 0;
}

.message-content pre code {
  background: none;
  padding: 0;
}

.message-content strong {
  font-weight: 600;
}

.message-content ul {
  margin: 8px 0;
  padding-left: 20px;
}

.message-content li {
  margin-bottom: 4px;
}

#assistant-form {
  padding: 12px 16px;
  background: white;
  border-top: 1px solid #e0e0e0;
  display: flex;
  gap: 8px;
}

#assistant-input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.3s ease;
}

#assistant-input:focus {
  border-color: var(--utec-primary);
}

#assistant-send {
  background: var(--utec-primary);
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
}

#assistant-send:hover {
  background: var(--utec-dark);
  transform: translateY(-1px);
}

#assistant-disclaimer {
  padding: 8px 20px;
  background: #fff3cd;
  border-top: 1px solid #ffeaa7;
  font-size: 12px;
  color: #856404;
  text-align: center;
}

#assistant-history-panel {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  border-radius: 12px;
  flex-direction: column;
  z-index: 1001;
}

#assistant-history-header {
  background: linear-gradient(135deg, var(--utec-dark), var(--utec-primary));
  color: white;
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#assistant-history-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

#assistant-history-header div {
  display: flex;
  gap: 8px;
}

#assistant-history-header button {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s ease;
}

#assistant-history-header button:hover {
  background: rgba(255, 255, 255, 0.3);
}

#assistant-history-list {
  flex: 1;
  padding: 15px;
  overflow-y: auto;
  background: #f8f9fa;
}

.history-item {
  background: white;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid #e0e0e0;
}

.history-item:hover {
  background: #f0f8ff;
  border-color: var(--utec-primary);
  transform: translateY(-1px);
}

.history-item-date {
  font-size: 12px;
  color: var(--text-light);
  margin-bottom: 6px;
}

.history-item-preview {
  font-size: 14px;
  color: var(--text-dark);
  margin-bottom: 8px;
  line-height: 1.3;
}

.history-item-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-light);
}

.history-item-delete {
  background: var(--error);
  color: white;
  border: none;
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 11px;
  transition: background 0.3s ease;
}

.history-item-delete:hover {
  background: #c82333;
}

.history-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-light);
}

.history-empty-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.history-empty p {
  font-size: 14px;
}

.modal-open {
  overflow: hidden;
}

/* Assistant Mobile Styles */

/* Tablet and medium screens */
@media (max-width: 1024px) {
  #assistant-widget {
    bottom: 20px;
    right: 20px;
  }
  
  #assistant-popup {
    width: 520px;
    height: 650px;
    right: 0;
    bottom: 70px;
  }
}

/* Mobile landscape and small tablets */
@media (max-width: 768px) {
  #assistant-widget {
    bottom: 15px;
    right: 15px;
    z-index: 1000;
  }
  
  #assistant-toggle {
    width: 52px;
    height: 52px;
    font-size: 22px;
    box-shadow: 0 4px 16px rgba(0, 173, 224, 0.4);
  }
  
  #assistant-popup {
    width: calc(100vw - 20px);
    height: 65vh;
    right: -5px;
    bottom: 70px;
    border-radius: 16px;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
  }
  
  #assistant-header {
    padding: 14px 18px;
    border-radius: 16px 16px 0 0;
  }
  
  #assistant-header h3 {
    font-size: 15px;
  }
  
  #assistant-header-buttons button {
    padding: 8px 12px;
    font-size: 13px;
    border-radius: 8px;
  }
  
  #assistant-messages {
    max-height: 45vh;
    padding: 14px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  #assistant-history-list {
    max-height: 45vh;
    padding: 14px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  #assistant-history-panel {
    left: 0;
    width: 100%;
    border-radius: 16px;
  }
  
  #assistant-form {
    padding: 12px 18px;
    gap: 12px;
  }
  
  #assistant-input {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 25px;
  }
  
  #assistant-send {
    padding: 12px 20px;
    font-size: 14px;
    border-radius: 25px;
    min-width: 70px;
  }
  
  #assistant-disclaimer {
    padding: 10px 18px;
    font-size: 11px;
  }
  
  .message-content {
    max-width: 85%;
    font-size: 14px;
    line-height: 1.5;
  }
  
  .assistant-empty-state {
    padding: 30px 15px;
  }
  
  .assistant-empty-icon {
    font-size: 40px;
  }
  
  .assistant-empty-state h4 {
    font-size: 16px;
  }
  
  .assistant-empty-state p {
    font-size: 13px;
  }
  
  .history-item {
    padding: 12px;
    margin-bottom: 10px;
  }
  
  .history-item-date {
    font-size: 11px;
  }
  
  .history-item-preview {
    font-size: 13px;
  }
  
  .history-item-meta {
    font-size: 11px;
  }
}

/* Mobile portrait */
@media (max-width: 480px) {
  #assistant-widget {
    bottom: 12px;
    right: 12px;
  }
  
  #assistant-toggle {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
  
  #assistant-popup {
    width: 100vw;
    right: -12px;
    border-radius: 20px 20px 0 0;
    max-height: calc(100vh - 60px);
  }
  
  #assistant-header {
    padding: 12px 16px;
    border-radius: 20px 20px 0 0;
    position: sticky;
    top: 0;
    z-index: 1002;
  }
  
  #assistant-header h3 {
    font-size: 14px;
  }
  
  #assistant-header-buttons {
    gap: 6px;
  }
  
  #assistant-header-buttons button {
    padding: 6px 10px;
    font-size: 12px;
  }
  
  #assistant-messages {
    max-height: 65vh;
    padding: 12px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  #assistant-history-list {
    max-height: 65vh;
    padding: 12px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  #assistant-history-panel {
    border-radius: 20px 20px 0 0;
  }
  
  #assistant-form {
    padding: 10px 16px;
    gap: 10px;
    position: sticky;
    bottom: 0;
    background: white;
    border-top: 1px solid #e0e0e0;
  }
  
  #assistant-input {
    padding: 10px 14px;
    font-size: 16px;
    border-radius: 20px;
  }
  
  #assistant-send {
    padding: 10px 16px;
    font-size: 13px;
    border-radius: 20px;
    min-width: 60px;
  }
  
  #assistant-disclaimer {
    padding: 8px 16px;
    font-size: 10px;
    position: sticky;
    bottom: 0;
  }
  
  .message-content {
    max-width: 90%;
    font-size: 13px;
    padding: 10px 14px;
  }
  
  .user-message .message-content {
    border-radius: 18px 18px 4px 18px;
  }
  
  .assistant-message .message-content {
    border-radius: 18px 18px 18px 4px;
  }
  
  .assistant-empty-state {
    padding: 20px 10px;
  }
  
  .assistant-empty-icon {
    font-size: 36px;
  }
  
  .assistant-empty-state h4 {
    font-size: 15px;
    margin-bottom: 10px;
  }
  
  .assistant-empty-state p {
    font-size: 12px;
  }
  
  .history-item {
    padding: 10px;
    margin-bottom: 8px;
  }
  
  .history-item-date {
    font-size: 10px;
  }
  
  .history-item-preview {
    font-size: 12px;
  }
  
  .history-item-meta {
    font-size: 10px;
  }
  
  .history-item-delete {
    padding: 3px 6px;
    font-size: 10px;
  }
}

/* Very small screens */
@media (max-width: 360px) {
  #assistant-popup {
    width: 100vw;
    height: 95vh;
    right: -12px;
    bottom: 0;
    border-radius: 16px 16px 0 0;
  }
  
  #assistant-header {
    padding: 10px 12px;
  }
  
  #assistant-messages {
    max-height: 70vh;
    padding: 10px;
  }
  
  #assistant-history-list {
    max-height: 70vh;
    padding: 10px;
  }
  
  #assistant-form {
    padding: 8px 12px;
  }
  
  #assistant-input {
    padding: 8px 12px;
    font-size: 15px;
  }
  
  #assistant-send {
    padding: 8px 12px;
    font-size: 12px;
    min-width: 50px;
  }
  
  .message-content {
    font-size: 12px;
    padding: 8px 12px;
  }
}

/* UTEC Carousel Styles */
.utec-carousel {
  margin-top: 50px;
  padding: 20px 0;
}

.utec-swiper {
  width: 100%;
  padding-top: 20px;
  padding-bottom: 50px;
}

.carousel-slide-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  position: relative;
}

.carousel-image {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 15px;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
  cursor: pointer;
  opacity: 0;
  position: relative;
}

.carousel-image.loaded {
  opacity: 1;
}

.carousel-image:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 35px rgba(0, 0, 0, 0.2);
}

.image-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 300px;
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
  border-radius: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 14px;
  z-index: 1;
}

.image-placeholder.hidden {
  display: none;
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.lazy-image {
  filter: blur(0px);
  transition: filter 0.3s ease;
}

.lazy-image:not(.loaded) {
  filter: blur(5px);
}

.carousel-caption {
  margin-top: 15px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--utec-dark);
  text-align: center;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(10px);
}

/* Swiper navigation buttons */
.swiper-button-next,
.swiper-button-prev {
  color: var(--utec-primary);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  margin-top: -25px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.swiper-button-next:hover,
.swiper-button-prev:hover {
  background: rgba(255, 255, 255, 1);
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.swiper-button-next::after,
.swiper-button-prev::after {
  font-size: 18px;
  font-weight: bold;
}

.swiper-button-next::after {
  content: '▶' !important;
}

.swiper-button-prev::after {
  content: '◀' !important;
}

/* Swiper pagination */
.swiper-pagination-bullet {
  width: 12px;
  height: 12px;
  background: rgba(0, 173, 224, 0.5);
  border-radius: 50%;
  opacity: 1;
  transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
  background: var(--utec-primary);
  transform: scale(1.2);
}

/* Responsive adjustments for carousel */
@media (max-width: 768px) {
  .carousel-image {
    height: 250px;
  }
  
  .image-placeholder {
    height: 250px;
    font-size: 12px;
  }
  
  .carousel-caption {
    font-size: 1rem;
    margin-top: 12px;
  }
  
  .swiper-button-next,
  .swiper-button-prev {
    width: 40px;
    height: 40px;
    margin-top: -20px;
  }
  
  .swiper-button-next::after,
  .swiper-button-prev::after {
    font-size: 16px;
  }
  
  .swiper-button-next::after {
    content: '▶' !important;
  }

  .swiper-button-prev::after {
    content: '◀' !important;
  }
}

@media (max-width: 480px) {
  .carousel-image {
    height: 200px;
    border-radius: 12px;
  }
  
  .image-placeholder {
    height: 200px;
    font-size: 11px;
    border-radius: 12px;
  }
  
  .carousel-caption {
    font-size: 0.9rem;
    margin-top: 10px;
    padding: 6px 10px;
  }
  
  .swiper-button-next,
  .swiper-button-prev {
    width: 35px;
    height: 35px;
    margin-top: -17px;
  }
  
  .swiper-button-next::after,
  .swiper-button-prev::after {
    font-size: 14px;
  }
  
  .swiper-button-next::after {
    content: '▶' !important;
  }

  .swiper-button-prev::after {
    content: '◀' !important;
  }
  
  .swiper-pagination-bullet {
    width: 10px;
    height: 10px;
  }
}

/* Assistant table styles */
.assistant-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.assistant-table thead {
  background: var(--utec-primary);
  color: white;
}

.assistant-table th {
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.assistant-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #e0e0e0;
  vertical-align: top;
}

.assistant-table tbody tr:hover {
  background: #f8f9fa;
}

.assistant-table tbody tr:last-child td {
  border-bottom: none;
}

/* Assistant table mobile styles */
@media (max-width: 768px) {
  .assistant-table {
    font-size: 12px;
    margin: 12px 0;
  }
  
  .assistant-table th,
  .assistant-table td {
    padding: 8px 12px;
  }
  
  .assistant-table th {
    font-size: 11px;
  }
}

@media (max-width: 480px) {
  .assistant-table {
    font-size: 11px;
    margin: 10px 0;
  }
  
  .assistant-table th,
  .assistant-table td {
    padding: 6px 8px;
  }
  
  .assistant-table th {
    font-size: 10px;
  }
}

/* Assistant list styles */
.message-content ul,
.message-content ol {
  margin: 12px 0;
  padding-left: 20px;
}

.message-content ul li,
.message-content ol li {
  margin-bottom: 8px;
  line-height: 1.5;
}

.message-content ul li::marker {
  color: var(--utec-primary);
}

.message-content ol li::marker {
  color: var(--utec-primary);
  font-weight: 600;
}

/* Mobile adjustments for lists */
@media (max-width: 768px) {
  .message-content ul,
  .message-content ol {
    margin: 10px 0;
    padding-left: 18px;
  }
  
  .message-content ul li,
  .message-content ol li {
    margin-bottom: 6px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .message-content ul,
  .message-content ol {
    margin: 8px 0;
    padding-left: 16px;
  }
  
  .message-content ul li,
  .message-content ol li {
    margin-bottom: 5px;
    font-size: 12px;
  }
}

/* Video Lazy Loading Styles */
.video-container {
  position: relative;
  display: inline-block;
  width: 100%;
  max-width: 600px;
}

.lazy-video {
  opacity: 0;
  transition: opacity 0.3s ease;
  position: relative;
  z-index: 2;
}

.lazy-video.loaded {
  opacity: 1;
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  border: 2px dashed #dee2e6;
  min-height: 200px;
}

.video-placeholder.hidden {
  display: none;
}

.video-placeholder-content {
  text-align: center;
  color: #6c757d;
  padding: 20px;
}

.video-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.7;
  animation: videoIconPulse 2s infinite;
}

@keyframes videoIconPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.7;
  }
  50% {
    transform: scale(1.1);
    opacity: 1;
  }
}

.video-placeholder-content p {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 20px;
  color: var(--utec-dark);
}

.video-loading-bar {
  width: 200px;
  height: 4px;
  background: #e9ecef;
  border-radius: 2px;
  overflow: hidden;
  margin: 0 auto;
  position: relative;
}

.video-loading-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--utec-primary), var(--utec-secondary));
  border-radius: 2px;
  animation: videoLoadingProgress 2s infinite;
}

@keyframes videoLoadingProgress {
  0% {
    width: 0%;
    transform: translateX(-100%);
  }
  50% {
    width: 100%;
    transform: translateX(0%);
  }
  100% {
    width: 100%;
    transform: translateX(100%);
  }
}

/* Mobile responsive styles for video */
@media (max-width: 768px) {
  .video-container {
    max-width: 100%;
  }
  
  .video-placeholder {
    min-height: 150px;
  }
  
  .video-icon {
    font-size: 36px;
    margin-bottom: 12px;
  }
  
  .video-placeholder-content p {
    font-size: 14px;
    margin-bottom: 15px;
  }
  
  .video-loading-bar {
    width: 150px;
  }
}

@media (max-width: 480px) {
  .video-placeholder {
    min-height: 120px;
  }
  
  .video-icon {
    font-size: 28px;
    margin-bottom: 10px;
  }
  
  .video-placeholder-content {
    padding: 15px;
  }
  
  .video-placeholder-content p {
    font-size: 12px;
    margin-bottom: 12px;
  }
  
  .video-loading-bar {
    width: 120px;
    height: 3px;
  }
}