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

:root {
  --primary-red: #D42C2C;
  --primary-red-hover: #B82626;
  --text-primary: #1d1d1f;
  --text-secondary: #515154;
  --text-tertiary: #86868b;
  --background: #ffffff;
  --background-secondary: #f5f5f7;
  --background-tertiary: #fbfbfd;
  --border-color: #d2d2d7;
  --shadow-light: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.12);
  --radius-small: 8px;
  --radius-medium: 12px;
  --radius-large: 16px;
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1,
h2,
h3 {
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 2.5rem;
  line-height: 1.1;
}

h2 {
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.5rem;
  line-height: 1.3;
}

p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
  line-height: 1.5;
}

/* Header */
header {
  background: var(--primary-red);
  padding: var(--spacing-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-around;
  align-items: center;
}

header h1 {
  color: white;
  font-size: 1.75rem;
  margin: 0;
  font-weight: 700;
}

/* Header User Section */
.header-user {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

header p {
  color: rgba(255, 255, 255, 0.9);
  margin: 0;
  font-size: 0.95rem;
}

/* Header Logout Button */
header a {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-small);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.2s ease;
  backdrop-filter: blur(10px);
}

header a:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
}

/* Main Content */
main {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  width: 100%;
}

/* Buttons */
button,
a[href*="dashboard"],
a[href*="seminar"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--primary-red);
  color: white;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-medium);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-light);
  min-height: 44px;
}

button:hover,
a[href*="login"]:hover,
a[href*="dashboard"]:hover,
a[href*="seminar"]:hover {
  background: var(--primary-red-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

button:disabled {
  background: var(--text-tertiary);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

button:disabled:hover {
  background: var(--text-tertiary);
  transform: none;
}

/* Forms */
form {
  background: var(--background-tertiary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-light);
  max-width: 400px;
  margin: var(--spacing-xl) auto;
}

form h2 {
  text-align: center;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

label {
  display: block;
  color: var(--text-primary);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-medium);
  font-size: 1rem;
  background: var(--background);
  transition: border-color 0.2s ease;
}


input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(212, 44, 44, 0.1);
}

/* Welcome Page */
main h2:first-child {
  text-align: center;
  font-size: 2.5rem;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

main h2:first-child+p {
  text-align: center;
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xl);
  color: var(--text-secondary);
}

main h2:first-child+p+a {
  display: block;
  width: fit-content;
  margin: 0 auto;
  font-size: 1.125rem;
  padding: 16px 32px;
}

/* Dashboard */
.dashboard-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.dashboard-header h2 {
  margin: 0;
}

/* Info Button */
button[onclick="showInfo()"] {
  width: 32px;
  height: 32px;
  background: var(--text-tertiary);
  color: white;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-light);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

button[onclick="showInfo()"]:hover {
  background: var(--text-secondary);
  transform: scale(1.1);
}

article {
  background: var(--background-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-large);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-light);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid var(--border-color);
}

article:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

article h3 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

article p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  font-size: 1rem;
}

article a {
  font-size: 0.95rem;
  padding: 10px 20px;
}

/* Modal */
#info-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

#info-modal>* {
  background: var(--background);
  padding: var(--spacing-lg);
  border-radius: var(--radius-large);
  max-width: 600px;
  margin: var(--spacing-md);
  box-shadow: var(--shadow-medium);
  max-height: 80vh;
  overflow-y: auto;
}

#info-modal h3 {
  margin-bottom: var(--spacing-md);
  color: var(--primary-red);
}

#info-modal p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.6;
}

#info-modal ul {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-md);
}

#info-modal li {
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

#info-modal strong {
  color: var(--text-primary);
}

#info-modal button {
  margin-top: var(--spacing-md);
  background: var(--text-secondary);
  padding: 10px 20px;
}

div.confirmation {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Footer */
footer {
  background: var(--background-secondary);
  text-align: center;
  padding: var(--spacing-md);
  border-top: 1px solid var(--border-color);
  margin-top: auto;
}

footer a {
  color: var(--text-tertiary);
  font-size: 0.9rem;
  margin: 0;
}

footer a:hover {
  color: var(--primary-red-hover);
}

footer p {
  color: var(--text-tertiary);
  font-size: 0.9rem;
  margin: 0;
}

/* Seminar Landing Page Styles (App Colors & Responsive Image, 50/50 split) */
.seminar-landing {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.seminar-hero {
  display: flex;
  flex-wrap: wrap;
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-light);
  margin-bottom: 2rem;
  overflow: hidden;
}

.seminar-image {
  flex: 1 1 50%;
  min-width: 320px;
  aspect-ratio: 16/9;
  display: flex;
  align-items: stretch;
  justify-content: center;
  background: var(--background-secondary);
  border-radius: var(--radius-medium) 0 0 var(--radius-medium);
  overflow: hidden;
  position: relative;
  max-width: 50%;
}

.seminar-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.seminar-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  background: var(--primary-red);
  color: #fff;
  padding: 0.3em 0.8em;
  border-radius: var(--radius-small);
  font-size: 0.95em;
  font-weight: 600;
  box-shadow: var(--shadow-light);
}

.seminar-info {
  flex: 1 1 50%;
  min-width: 320px;
  padding: 2rem 1.5rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 50%;
}

.seminar-info h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--primary-red);
}

.seminar-price {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.seminar-benefits ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  color: var(--text-primary);
}

.seminar-benefits li {
  margin-bottom: 0.4em;
  position: relative;
  padding-left: 1.2em;
}

.seminar-benefits li:before {
  content: '✔';
  color: var(--primary-red);
  position: absolute;
  left: 0;
  font-size: 1em;
}

.cta-btn {
  display: inline-block;
  background: var(--primary-red);
  color: #fff;
  padding: 0.7em 1.5em;
  border-radius: var(--radius-small);
  font-size: 1.1em;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
  margin-top: 0.5em;
}

.cta-btn:hover {
  background: var(--primary-red-hover);
}

.seminar-details {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
  padding: 2rem 1rem;
  color: var(--text-primary);
}

.details-block {
  flex: 1 1 320px;
  min-width: 260px;
}

.details-block h2 {
  color: var(--primary-red);
  margin-bottom: 0.7em;
}

@media (max-width: 800px) {

  .seminar-hero,
  .seminar-details {
    flex-direction: column;
    padding: 1rem;
  }

  .seminar-info {
    padding: 1rem;
    max-width: 100%;
  }

  .seminar-image {
    max-width: 100%;
    min-width: 0;
    border-radius: var(--radius-medium) var(--radius-medium) 0 0;
  }

  .cta-btn {
    width: 80%;
    box-sizing: border-box;
    margin-left: 0;
    margin-right: 0;
    text-align: center;
  }
}

@media (max-width: 768px) {
  :root {
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .dashboard-header h2 {
    margin-bottom: 0;
  }

  header>* {
    flex-direction: column;
    gap: var(--spacing-xs);
    text-align: center;
  }

  .header-user {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  header h1 {
    font-size: 1.5rem;
  }

  main {
    padding: var(--spacing-md);
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  main h2:first-child {
    font-size: 2rem;
  }

  form {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
  }

  button,
  a[href*="login"],
  a[href*="dashboard"],
  a[href*="seminar"] {
    width: 100%;
    margin-bottom: var(--spacing-xs);
  }

  article {
    padding: var(--spacing-sm);
  }

  #info-modal>* {
    margin: var(--spacing-sm);
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  header>* {
    padding: 0 var(--spacing-sm);
  }

  main {
    padding: var(--spacing-sm);
  }

  main h2:first-child+p+a {
    font-size: 1rem;
    padding: 14px 28px;
  }
}

/* Staff-Bereich Styles */
.staff-dashboard {
  max-width: 1000px;
  margin: 0 auto;
}

.staff-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.stat-card {
  background: var(--background-tertiary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-large);
  text-align: center;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
}

.stat-card h3 {
  font-size: 2.5rem;
  color: var(--primary-red);
  margin-bottom: 0;
}

.stat-card p {
  margin: var(--spacing-xs) 0;
  color: var(--text-secondary);
}

.stat-card a {
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  padding: 8px 16px;
  background: var(--primary-red);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-small);
}

.stat-card a:hover {
  background: var(--primary-red-hover);
}

.staff-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin: var(--spacing-lg) 0;
}

.staff-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--text-secondary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  transition: all 0.2s ease;
}

.staff-btn:hover {
  background: var(--primary-red);
  transform: translateY(-1px);
}

.staff-section {
  max-width: 1000px;
  margin: var(--spacing-xl) auto;
}

.staff-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.staff-header h2 {
  margin-bottom: 0;
}

.staff-btn-primary {
  background: var(--primary-red);
  color: white;
  padding: 12px 24px;
  border-radius: var(--radius-medium);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.staff-btn-primary:hover {
  background: var(--primary-red-hover);
  transform: translateY(-1px);
}

.staff-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-light);
}

.staff-table th,
.staff-table td {
  padding: var(--spacing-sm);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.staff-table th {
  background: var(--background-secondary);
  font-weight: 600;
  color: var(--text-primary);
}

.staff-table td {
  color: var(--text-secondary);
}

.staff-table .actions {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.btn-small {
  padding: 6px 12px;
  font-size: 0.875rem;
  border-radius: var(--radius-small);
  text-decoration: none;
  color: white;
  background: var(--text-secondary);
  transition: all 0.2s ease;
}

.btn-small:hover {
  background: var(--text-primary);
}

.btn-small.btn-danger {
  background: #dc3545;
}

.btn-small.btn-danger:hover {
  background: #c82333;
}

.btn-secondary {
  background: var(--text-tertiary);
  color: white;
  padding: 10px 20px;
  border-radius: var(--radius-medium);
  text-decoration: none;
  transition: all 0.2s ease;
}

.btn-secondary:hover {
  background: var(--text-secondary);
}

.staff-form {
  max-width: 600px;
  background: var(--background-tertiary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-light);
}

.staff-form .form-group {
  margin-bottom: var(--spacing-md);
}

.staff-form .form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.staff-form input[type="text"],
.staff-form input[type="password"],
.staff-form input[type="email"],
.staff-form textarea,
.staff-form input[type="file"] {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-medium);
  font-size: 1rem;
  background: var(--background);
  transition: border-color 0.2s ease;
}

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

.staff-form .error {
  color: var(--primary-red);
  font-size: 0.875rem;
  margin-top: 4px;
  display: block;
}

.staff-form .form-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.form-row {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.form-row .form-group {
  flex: 1;
  min-width: 200px;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 10px 12px;
  background: var(--background);
  border-radius: var(--radius-small);
  cursor: pointer;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
}

.checkbox-label:hover {
  border-color: var(--primary-red);
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-red);
}

.confirm-delete {
  max-width: 500px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background: var(--background-tertiary);
  border-radius: var(--radius-large);
  text-align: center;
  box-shadow: var(--shadow-light);
}

.confirm-delete .warning {
  color: #dc3545;
  font-weight: 500;
}

.confirm-delete form {
  max-width: none;
  margin-top: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
}

.recent-section {
  margin-top: var(--spacing-xl);
}

.recent-section h3 {
  margin-bottom: var(--spacing-md);
}

.info-text {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  font-style: italic;
}

.staff-link {
  background: rgba(255, 255, 255, 0.25) !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
}

.staff-link:hover {
  background: rgba(255, 255, 255, 0.35) !important;
}

/* Back-Link Button */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: var(--text-secondary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  transition: all 0.2s ease;
  margin-top: var(--spacing-lg);
  font-weight: 500;
}

.back-link:hover {
  background: var(--text-primary);
  transform: translateX(-4px);
  box-shadow: var(--shadow-light);
}

.back-link::before {
  content: "←";
  font-weight: 600;
}

/* Stat Cards Hover Animation */
.stat-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.stat-card h3 {
  transition: transform 0.3s ease;
}

.stat-card:hover h3 {
  transform: scale(1.05);
}

/* Table Row Hover */
.staff-table tbody tr {
  transition: all 0.2s ease;
}

.staff-table tbody tr:hover {
  background: var(--background-secondary);
  transform: translateX(4px);
}

/* Button Animations */
.staff-btn-primary {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.staff-btn-primary::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.4s ease, height 0.4s ease;
}

.staff-btn-primary:hover::after {
  width: 300px;
  height: 300px;
}

.staff-btn-primary:hover {
  box-shadow: 0 6px 20px rgba(212, 44, 44, 0.35);
}

/* Button Small Hover */
.btn-small {
  position: relative;
  overflow: hidden;
}

.btn-small:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
}

/* Form Actions */
.form-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.btn-secondary {
  padding: 12px 24px;
  background: var(--text-tertiary);
  color: white;
  border-radius: var(--radius-medium);
  text-decoration: none;
  transition: all 0.2s ease;
  font-weight: 500;
}

.btn-secondary:hover {
  background: var(--text-secondary);
  transform: translateY(-2px);
}

/* Empty Message */
.empty-message {
  text-align: center;
  padding: var(--spacing-lg);
  color: var(--text-tertiary);
  font-style: italic;
}

/* Confirm Delete */
.confirm-delete {
  max-width: 500px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background: var(--background-tertiary);
  border-radius: var(--radius-large);
  text-align: center;
  box-shadow: var(--shadow-light);
  animation: fadeIn 0.3s ease;
}

.confirm-delete .warning {
  color: #dc3545;
  font-weight: 600;
  font-size: 1.1rem;
  margin: var(--spacing-md) 0;
}

.confirm-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Table Wrapper for Mobile */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* Hint Text */
.hint {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

/* Info Text */
.info-text {
  padding: var(--spacing-sm);
  background: var(--background-secondary);
  border-radius: var(--radius-small);
  margin-bottom: var(--spacing-md);
}

/* Staff Dashboard */
.staff-dashboard {
  animation: fadeIn 0.3s ease;
}

.staff-section {
  animation: fadeIn 0.3s ease;
}

@media (max-width: 768px) {
  .staff-stats {
    grid-template-columns: 1fr;
  }

  .staff-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .staff-table {
    font-size: 0.875rem;
  }

  .staff-table th,
  .staff-table td {
    padding: 8px;
  }

  .staff-nav {
    flex-direction: column;
  }

  .staff-btn {
    text-align: center;
  }
}

/* Mobile Navigation */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 110;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background: white;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

.header-nav {
  display: flex;
  align-items: center;
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .header-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--primary-red);
    flex-direction: column;
    padding: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-medium);
  }

  .header-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .header-user {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    text-align: center;
  }

  .header-user a,
  .header-user p {
    width: 100%;
    justify-content: center;
  }

  header {
    flex-wrap: wrap;
    position: relative;
  }

  header h1 {
    flex: 1;
    text-align: center;
  }
}

/* Seminar Detail Page */
.seminar-detail {
  max-width: 900px;
  margin: 0 auto;
}

.seminar-header {
  margin-bottom: var(--spacing-lg);
}

.seminar-header h2 {
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.seminar-description {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.video-container {
  position: relative;
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  background: #000;
}

.video-container video {
  display: block;
  margin: 0;
}

/* Video Progress Container */
.video-progress-container {
  background: var(--background-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-medium);
  margin: var(--spacing-md) 0;
  box-shadow: var(--shadow-light);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
}

.progress-label {
  color: var(--text-primary);
}

#progress-text {
  color: var(--primary-red);
  font-weight: 600;
}

.progress-bars {
  position: relative;
  height: 12px;
}

.watched-progress,
.current-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  border: none;
  border-radius: var(--radius-small);
}

.watched-progress {
  z-index: 1;
  background: var(--background-secondary);
}

.watched-progress::-webkit-progress-bar {
  background: var(--background-secondary);
  border-radius: var(--radius-small);
}

.watched-progress::-webkit-progress-value {
  background: #34c759 !important;
  border-radius: var(--radius-small);
}

.watched-progress::-moz-progress-bar {
  background: #34c759;
  border-radius: var(--radius-small);
}

.current-progress {
  z-index: 2;
  background: transparent !important;
}

.current-progress::-webkit-progress-bar {
  background: transparent !important;
}

.current-progress::-webkit-progress-value {
  background: var(--primary-red) !important;
  opacity: 0.7;
  border-radius: var(--radius-small);
}

.current-progress::-moz-progress-bar {
  background: var(--primary-red);
  opacity: 0.7;
  border-radius: var(--radius-small);
}

.progress-legend {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xs);
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.legend-color {
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.legend-color.watched {
  background: #34c759;
}

.legend-color.current {
  background: var(--primary-red);
  opacity: 0.7;
}

/* Certificate Section */
.certificate-section {
  background: var(--background-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-medium);
  margin: var(--spacing-md) 0;
  text-align: center;
}

.btn-certificate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: #34c759;
  color: white;
  border: none;
  border-radius: var(--radius-medium);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-light);
}

.btn-certificate:hover:not(:disabled) {
  background: #30b350;
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-certificate:disabled {
  background: var(--text-tertiary);
  cursor: not-allowed;
  opacity: 0.6;
}

.btn-certificate .btn-icon {
  font-size: 1.3rem;
}

.certificate-hint {
  margin-top: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--text-tertiary);
}

.certificate-hint.ready {
  color: #155724;
  font-weight: 500;
}

/* Login Page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 60vh;
  padding: var(--spacing-lg);
}

.login-card {
  background: var(--background-tertiary);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-medium);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 420px;
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.login-header h2 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.login-header p {
  color: var(--text-tertiary);
  font-size: 0.95rem;
}

.login-error {
  background: #fff5f5;
  border: 1px solid #fc8181;
  border-radius: var(--radius-small);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.login-error strong {
  color: #c53030;
  display: block;
  margin-bottom: 4px;
}

.login-error p {
  color: #742a2a;
  font-size: 0.9rem;
  margin: 0;
}

.login-form .form-group {
  margin-bottom: var(--spacing-md);
}

.login-form label {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.login-form input {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-medium);
  font-size: 1rem;
  transition: all 0.2s ease;
}

.login-form input:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(212, 44, 44, 0.1);
}

.btn-login {
  width: 100%;
  padding: 14px 24px;
  background: var(--primary-red);
  color: white;
  border: none;
  border-radius: var(--radius-medium);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: var(--spacing-md);
}

.btn-login:hover {
  background: var(--primary-red-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.btn-arrow {
  font-size: 1.2em;
  transition: transform 0.2s ease;
}

.btn-login:hover .btn-arrow {
  transform: translateX(4px);
}

.login-footer {
  text-align: center;
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-color);
}

.login-footer p {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  margin: 0;
}

.login-footer a {
  color: var(--primary-red);
  font-weight: 500;
  text-decoration: none;
}

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

.login-container form {
  max-width: none;
  margin: 0;
  padding: 0;
  background: none;
  box-shadow: none;
}

/* Dashboard Seminar Cards */
.seminar-card {
  position: relative;
  overflow: hidden;
}

.seminar-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
}

.seminar-status {
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: var(--radius-small);
  font-weight: 500;
  white-space: nowrap;
}

.seminar-status.incomplete {
  background: var(--background-secondary);
  color: var(--text-tertiary);
}

.seminar-status.in-progress {
  background: #fff3cd;
  color: #856404;
}

.seminar-status.complete {
  background: #d4edda;
  color: #155724;
}

.seminar-progress {
  margin: var(--spacing-sm) 0;
}

.seminar-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--background-secondary);
  border-radius: var(--radius-small);
  overflow: hidden;
}

.seminar-progress-fill {
  height: 100%;
  background: var(--primary-red);
  transition: width 0.3s ease;
  border-radius: var(--radius-small);
}

.seminar-progress-fill.complete {
  background: #34c759;
}

.seminar-progress-text {
  display: block;
  text-align: right;
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.seminar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: var(--primary-red);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: var(--primary-red-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
}

.certificate-requested {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: #d4edda;
  color: #155724;
  border-radius: var(--radius-medium);
  font-weight: 500;
}

.status-icon {
  font-size: 1.1rem;
}

.btn-certificate-request {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: #34c759;
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-certificate-request:hover {
  background: #30b350;
  transform: translateY(-2px);
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .stat-card:hover,
  .staff-btn-primary:hover,
  .btn-small:hover,
  .back-link:hover,
  .staff-table tbody tr:hover,
  article:hover {
    transform: none !important;
  }

  .staff-btn-primary::after {
    display: none;
  }

  .mobile-menu-toggle.active .hamburger-line:nth-child(1),
  .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
    transform: none;
  }

  .btn-login:hover .btn-arrow {
    transform: none;
  }

  .btn-certificate:hover:not(:disabled),
  .btn-certificate-request:hover,
  .btn-primary:hover {
    transform: none;
  }
}

/* Video element base styles */
video {
  border-radius: var(--radius-medium);
  margin: var(--spacing-md) 0;
  background: #000;
  box-shadow: var(--shadow-medium);
}

/* ========================================
   VIDEO PROGRESS CARD - NEW DESIGN
   ======================================== */

.video-progress-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-radius: var(--radius-large);
  padding: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--background-secondary);
}

.progress-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.progress-icon {
  font-size: 1.5rem;
}

.progress-title h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--text-primary);
}

.progress-time {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-primary);
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', monospace;
}

.time-separator {
  color: var(--text-tertiary);
  font-weight: 400;
}

#current-time {
  color: var(--primary-red);
}

/* Timeline Bar */
.progress-timeline {
  margin: var(--spacing-lg) 0;
}

.timeline-bar {
  position: relative;
  height: 16px;
  background: #e9ecef;
  border-radius: 8px;
  overflow: visible;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.timeline-watched {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, #34c759 0%, #30d158 100%);
  border-radius: 8px;
  transition: width 0.3s ease;
  box-shadow: 0 2px 8px rgba(52, 199, 89, 0.3);
}

.timeline-marker {
  position: absolute;
  top: -8px;
  transform: translateX(-50%);
  z-index: 10;
  transition: left 0.3s ease;
}

.marker-dot {
  width: 20px;
  height: 20px;
  background: var(--primary-red);
  border: 3px solid white;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(212, 44, 44, 0.4);
  cursor: pointer;
  transition: transform 0.2s ease;
}

.marker-dot:hover {
  transform: scale(1.2);
}

.marker-label {
  position: absolute;
  top: -28px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-red);
  color: white;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.timeline-marker:hover .marker-label {
  opacity: 1;
}

/* Time markers under bar */
.timeline-markers {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  padding: 0 4px;
}

.time-mark {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-family: 'SF Mono', 'Monaco', monospace;
}

/* Info Box */
.progress-info-box {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #fff3cd;
  border-left: 4px solid #ffc107;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-small);
  margin-bottom: var(--spacing-md);
}

.progress-info-box.success {
  background: #d4edda;
  border-left-color: #28a745;
}

.info-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.info-text {
  font-size: 0.9rem;
  color: #856404;
  line-height: 1.4;
}

.progress-info-box.success .info-text {
  color: #155724;
}

/* Percentage Circle */
.progress-percentage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-top: var(--spacing-md);
}

.percentage-circle {
  position: relative;
  width: 120px;
  height: 120px;
}

.percentage-circle svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.circle-bg {
  fill: none;
  stroke: #e9ecef;
  stroke-width: 8;
}

.circle-progress {
  fill: none;
  stroke: #34c759;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s ease;
}

.percentage-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.percentage-label {
  margin-top: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ========================================
   USERS MANAGEMENT - STAFF
   ======================================== */

/* Integrated Toolbar Design */
.users-toolbar-integrated {
  display: block !important;
  margin-bottom: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
  border-bottom: 2px solid var(--border-color);
  width: 100%;
  box-sizing: border-box;
}

.users-toolbar-integrated form.search-form,
form.users-toolbar-integrated {
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  gap: var(--spacing-md);
  width: 100%;
  max-width: 100%;
}

.users-toolbar-integrated .toolbar-left,
.users-toolbar-integrated form.search-form .toolbar-left {
  flex: 1 !important;
  display: flex !important;
  align-items: center !important;
  min-width: 0;
}

.users-toolbar-integrated .toolbar-right,
.users-toolbar-integrated form.search-form .toolbar-right {
  display: flex !important;
  align-items: center !important;
  gap: var(--spacing-md);
  flex-shrink: 0;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.search-integrated {
  width: 100%;
  position: relative;
  display: inline-block;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 1rem;
  pointer-events: none;
}

.search-input-integrated {
  padding: 10px 16px 10px 40px;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-medium);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  width: 100%;
  max-width: 480px;
}

.search-input-integrated:focus {
  outline: none;
  border-color: var(--primary-red);
  box-shadow: 0 0 0 3px rgba(212, 44, 44, 0.1);
}

.btn-primary-small {
  padding: 10px 20px;
  background: var(--primary-red);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary-small:hover {
  background: var(--primary-red-hover);
  transform: translateY(-1px);
}

.users-stats {
  display: flex;
  gap: var(--spacing-sm);
}

.stat-badge {
  padding: 8px 16px;
  background: var(--background-secondary);
  border-radius: var(--radius-small);
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Hide old search form */
.search-form {
  display: none;
}

/* Unified Table Design */
.staff-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
  overflow: hidden;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-color);
}

.staff-table thead {
  background: var(--background-secondary);
  border-bottom: 2px solid var(--border-color);
}

.staff-table th {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.staff-table td {
  padding: var(--spacing-md);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.staff-table tbody tr {
  transition: all 0.2s ease;
}

.staff-table tbody tr:hover {
  background: var(--background-secondary);
  transform: translateX(2px);
}

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

.staff-table td.actions {
  text-align: right;
  white-space: nowrap;
}

/* Sortable Table Headers */
.staff-table.sortable th a {
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  color: var(--text-primary);
  transition: color 0.2s ease;
}

.staff-table.sortable th a:hover {
  color: var(--primary-red);
}

.sort-icon {
  font-size: 0.75rem;
  color: var(--primary-red);
  font-weight: 700;
}

/* Table Content Styling */
.staff-table .email-link {
  color: var(--primary-red);
  text-decoration: none;
  font-size: 0.9rem;
}

.staff-table .email-link:hover {
  text-decoration: underline;
}

.text-muted {
  color: var(--text-tertiary);
  font-style: italic;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-small);
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-info {
  background: #cce5ff;
  color: #004085;
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-secondary {
  background: var(--background-secondary);
  color: var(--text-tertiary);
}

.date-text {
  display: block;
  font-weight: 500;
  color: var(--text-primary);
}

.time-text {
  display: block;
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--background-tertiary);
  border-radius: var(--radius-medium);
}

.pagination-btn {
  padding: 10px 20px;
  background: var(--primary-red);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-medium);
  font-weight: 500;
  transition: all 0.2s ease;
}

.pagination-btn:hover {
  background: var(--primary-red-hover);
  transform: translateY(-1px);
}

.pagination-info {
  font-weight: 500;
  color: var(--text-secondary);
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xl);
}

.empty-state .btn-secondary {
  margin-top: var(--spacing-md);
}

/* Responsive */
@media (max-width: 768px) {
  .video-progress-card {
    padding: var(--spacing-md);
  }

  .progress-header {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

  .progress-time {
    font-size: 1.1rem;
  }

  .timeline-markers {
    display: none;
  }

  .percentage-circle {
    width: 100px;
    height: 100px;
  }

  .percentage-text {
    font-size: 1.5rem;
  }

  .users-toolbar-integrated {
    flex-direction: column;
    align-items: stretch;
  }

  .users-toolbar-integrated form.search-form {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .users-toolbar-integrated .toolbar-right {
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
    margin-top: var(--spacing-sm);
  }

  .users-toolbar-integrated .search-input-integrated {
    min-width: 100%;
    max-width: none;
  }

  .staff-table {
    font-size: 0.85rem;
  }

  .staff-table th,
  .staff-table td {
    padding: 8px 4px;
  }

  .pagination {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
}