/* FFS - Main Stylesheet */

/* CSS Variables */
:root {
  --primary-color: #007bff;
  --primary-dark: #0056b3;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  --white: #ffffff;
  --border-color: #dee2e6;
  --text-color: #212529;
  --text-muted: #6c757d;
  --shadow: 0 2px 4px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-color);
  min-height: 100vh;
}

/* Layout */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-nav {
  background-color: var(--white);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  padding: 1rem;
  gap: 1rem;
}

.nav-list li a {
  color: var(--text-color);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  display: block;
}

.nav-list li a:hover,
.nav-list li a.active {
  background-color: var(--primary-color);
  color: var(--white);
}

.nav-version {
  margin-left: auto;
  display: flex;
  align-items: center;
}

.nav-version span {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.5rem 1rem;
}

.main-content {
  flex: 1;
  padding: 2rem;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

#module-container {
  background-color: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  padding: 2rem;
  min-height: 400px;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
}

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

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

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

.btn-secondary:hover {
  background-color: #5a6268;
}

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

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

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

.btn-success:hover {
  background-color: #218838;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

/* Messages */
.error-message {
  background-color: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  border: 1px solid #f5c6cb;
}

.success-message {
  background-color: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  border: 1px solid #c3e6cb;
}

.info-message {
  background-color: #d1ecf1;
  color: #0c5460;
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  border: 1px solid #bee5eb;
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.spinner {
  border: 4px solid var(--light-color);
  border-top: 4px solid var(--primary-color);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  animation: spin 1s linear infinite;
}

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

/* Update Notice Banner */
.update-notice {
  background-color: var(--info-color);
  color: var(--white);
  padding: 0.75rem 1rem;
  box-shadow: var(--shadow);
  z-index: 1000;
  position: sticky;
  top: 0;
}

.update-notice-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: 1rem;
}

.update-notice-text {
  font-weight: 500;
  flex: 1;
}

.update-notice-actions {
  display: flex;
  gap: 0.5rem;
}

.update-notice .btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.875rem;
  white-space: nowrap;
}

/* Responsive update notice */
@media (max-width: 768px) {
  .update-notice-content {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }
  
  .update-notice-actions {
    justify-content: flex-end;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.hidden {
  display: none !important;
}

/* Hamburger Menu Styles */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  margin: 0.5rem;
  z-index: 101;
  position: relative;
}

.hamburger-icon {
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--text-color);
  position: relative;
  transition: var(--transition);
}

.hamburger-icon::before,
.hamburger-icon::after {
  content: '';
  display: block;
  width: 24px;
  height: 3px;
  background-color: var(--text-color);
  position: absolute;
  transition: var(--transition);
}

.hamburger-icon::before {
  top: -8px;
}

.hamburger-icon::after {
  bottom: -8px;
}

/* Hamburger icon animation when menu is open */
.main-nav.menu-open .hamburger-icon {
  background-color: transparent;
}

.main-nav.menu-open .hamburger-icon::before {
  top: 0;
  transform: rotate(45deg);
}

.main-nav.menu-open .hamburger-icon::after {
  bottom: 0;
  transform: rotate(-45deg);
}

/* Responsive */
@media (max-width: 768px) {
  .main-content {
    padding: 1rem;
  }
  
  #module-container {
    padding: 1rem;
  }
  
  .main-nav {
    display: flex;
    flex-direction: column;
  }
  
  .nav-toggle {
    display: block;
    align-self: flex-end;
  }
  
  .nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    padding: 0;
    width: 100%;
  }
  
  .nav-list.menu-open {
    display: flex;
  }
  
  .nav-list li {
    width: 100%;
    border-bottom: 1px solid var(--border-color);
  }
  
  .nav-list li a {
    padding: 1rem;
    border-radius: 0;
  }
  
  .nav-version {
    margin-left: 0;
    border-top: 1px solid var(--border-color);
  }
  
  .nav-version span {
    padding: 1rem;
  }
}