/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
  white-space: nowrap;
  min-height: var(--form-element-height);
  position: relative;
  overflow: hidden;
}

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

.btn-primary {
  background: var(--primary-gradient);
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-tertiary);
  border-color: var(--border-hover);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.btn-full {
  width: 100%;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  min-height: 3.5rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  min-height: 2.25rem;
}

/* Card Component */
.card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--card-padding);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.card-header {
  margin-bottom: var(--space-6);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.card-description {
  color: var(--text-secondary);
  margin-bottom: 0;
}

.card-content {
  margin-bottom: var(--space-6);
}

.card-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-4);
}

/* Header Component */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: var(--z-sticky);
  transition: var(--transition-normal);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 32px;
  width: auto;
  transition: var(--transition-normal);
}

/* Navigation Desktop */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-dropdown {
  position: relative;
}

.nav-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-trigger:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

.nav-arrow {
  width: 16px;
  height: 16px;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3e%3c/path%3e%3c/svg%3e");
  background-size: contain;
  transition: transform var(--transition-fast);
}

.nav-trigger[aria-expanded="true"] .nav-arrow {
  transform: rotate(180deg);
}

.nav-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 200px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-10px);
  transition: var(--transition-fast);
  z-index: var(--z-dropdown);
}

.nav-dropdown:hover .nav-menu,
.nav-trigger[aria-expanded="true"] + .nav-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-link {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-secondary);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius-lg);
  background-color: var(--bg-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

.theme-icon {
  width: 20px;
  height: 20px;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M12 3v1m0 16v1m9-9h-1M4 12H3m15.364 6.364l-.707-.707M6.343 6.343l-.707-.707m12.728 0l-.707.707M6.343 17.657l-.707.707M16 12a4 4 0 11-8 0 4 4 0 018 0z'%3e%3c/path%3e%3c/svg%3e");
  background-size: contain;
  transition: var(--transition-normal);
}

[data-theme="dark"] .theme-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='currentColor'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M20.354 15.354A9 9 0 018.646 3.646 9.003 9.003 0 0012 21a9.003 9.003 0 008.354-5.646z'%3e%3c/path%3e%3c/svg%3e");
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: var(--transition-fast);
}

.mobile-menu-toggle:hover {
  background-color: var(--bg-secondary);
}

.hamburger-line {
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition-fast);
  transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

@media (max-width: 1023px) {
  .nav-desktop {
    display: none;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--mobile-nav-width);
  height: calc(100vh - var(--header-height));
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  z-index: var(--z-fixed);
  overflow-y: auto;
}

.mobile-nav.active {
  transform: translateX(0);
}

.mobile-nav-content {
  padding: var(--space-6);
}

.mobile-nav-section {
  margin-bottom: var(--space-8);
}

.mobile-nav-section h3 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.mobile-nav-link {
  display: block;
  padding: var(--space-3) 0;
  color: var(--text-secondary);
  font-weight: var(--font-medium);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--text-primary);
}

.mobile-nav-actions {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Main Content */
.main-content {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Footer Component */
.footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--space-20) 0 var(--space-8);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: var(--space-16);
  margin-bottom: var(--space-16);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  height: 40px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer-tagline {
  color: var(--text-muted);
  margin-bottom: var(--space-6);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.footer-column h4 {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-column a {
  display: block;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
  transition: var(--transition-fast);
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: var(--text-sm);
  margin: 0;
}

@media (max-width: 1023px) {
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
}

@media (max-width: 767px) {
  .footer-links {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* Form Components */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  min-height: var(--form-element-height);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.form-error {
  color: #ef4444;
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

.form-success {
  color: var(--success-green);
  font-size: var(--text-sm);
  margin-top: var(--space-2);
}

/* Badge Component */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: var(--primary-gradient);
  color: var(--text-inverse);
}

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

.badge-success {
  background-color: var(--success-green);
  color: var(--text-inverse);
}

/* Progress Bar */
.progress {
  width: 100%;
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

/* Tooltip Component */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip-content {
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--neutral-900);
  color: white;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-fast);
  z-index: var(--z-tooltip);
}

.tooltip:hover .tooltip-content {
  opacity: 1;
  visibility: visible;
}

.tooltip-content::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--neutral-900);
}