/* ==========================================================================
   ECM IT-Consulting - Reusable UI Components
   ========================================================================== */

/* --------------------------------------------------------------------------
   Site Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: box-shadow var(--transition-base), background-color var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--color-primary);
  flex-shrink: 0;
}

.site-logo img,
.site-logo svg {
  height: 44px;
  width: auto;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item {
  position: relative;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-secondary);
  background-color: var(--color-secondary-light);
}

.nav-link.active {
  color: var(--color-secondary);
  font-weight: 600;
}

/* Dropdown Menu */
.has-dropdown > button.nav-link {
  cursor: pointer;
}

.dropdown-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.has-dropdown:hover .dropdown-icon,
.has-dropdown:focus-within .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 260px;
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-base);
  z-index: 1010;
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu,
.dropdown-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  display: block;
  width: 100%;
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.dropdown-link:hover,
.dropdown-link:focus-visible {
  background-color: var(--color-bg-light);
  color: var(--color-secondary);
}

.dropdown-link.active {
  color: var(--color-secondary);
  font-weight: 600;
}

.dropdown-link-desc {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Mobile Nav Toggle Button */
.mobile-nav-toggle {
  display: none;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.mobile-nav-toggle:hover,
.mobile-nav-toggle:focus-visible {
  background-color: var(--color-bg-light);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem; /* 2x horizontal vs vertical */
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.25;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--text-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--text-lg);
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  color: var(--color-text-inverse);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border-subtle);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-bg-light);
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

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

.btn-white:hover,
.btn-white:focus-visible {
  background-color: var(--color-bg-light);
  color: var(--color-secondary);
}

.btn-outline-white {
  background-color: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline-white:hover,
.btn-outline-white:focus-visible {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn-accent:hover,
.btn-accent:focus-visible {
  background-color: var(--color-accent-hover);
  color: var(--color-text-inverse);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-secondary-border);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  flex-shrink: 0;
}

.card-icon svg {
  width: 24px;
  height: 24px;
}

.card-footer {
  margin-top: auto;
  padding-top: var(--space-6);
}

/* --------------------------------------------------------------------------
   Breadcrumb Navigation
   -------------------------------------------------------------------------- */
.breadcrumb-nav {
  padding: var(--space-4) 0;
  background-color: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
}

.breadcrumb-item a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.breadcrumb-item[aria-current="page"] {
  color: var(--color-primary);
  font-weight: 600;
}

.breadcrumb-separator {
  color: var(--color-border-subtle);
}

/* --------------------------------------------------------------------------
   Badges, Pills & Placeholder Flags
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.75rem;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-blue {
  background-color: var(--color-secondary-light);
  color: var(--color-secondary);
}

.badge-cyan {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

.badge-warning {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
  border: 1px solid #FDE68A;
}

.placeholder-notice {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: #FEF3C7;
  border: 1px dashed var(--color-warning);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-warning);
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
}

/* --------------------------------------------------------------------------
   Accordion / FAQ Component (Native semantic details/summary)
   -------------------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-secondary);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--color-secondary);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--space-6) var(--space-6) var(--space-6);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------------------------------
   Forms & Contact Controls
   -------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px var(--color-secondary-light);
}

.form-input.is-invalid,
.form-textarea.is-invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-feedback {
  font-size: var(--text-xs);
  margin-top: var(--space-1);
  color: var(--color-error);
  display: none;
}

.form-feedback.visible {
  display: block;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  accent-color: var(--color-secondary);
  flex-shrink: 0;
}

.form-alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  display: none;
  font-size: var(--text-sm);
}

.form-alert.success {
  display: block;
  background-color: var(--color-success-bg);
  border: 1px solid #BBF7D0;
  color: var(--color-success);
}

.form-alert.error {
  display: block;
  background-color: var(--color-error-bg);
  border: 1px solid #FECACA;
  color: var(--color-error);
}

/* --------------------------------------------------------------------------
   CTA Section Banner
   -------------------------------------------------------------------------- */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1e293b 100%);
  color: var(--color-text-inverse);
  padding: var(--space-16) var(--space-8);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-banner h2 {
  color: var(--color-text-inverse);
  margin-bottom: var(--space-4);
}

.cta-banner p {
  color: var(--color-text-inverse-muted);
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-8);
  font-size: var(--text-lg);
}

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Site Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse-muted);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  border-top: 1px solid var(--color-primary-light);
  font-size: var(--text-sm);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  color: var(--color-text-inverse-muted);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  max-width: 36ch;
}

.footer-col h3,
.footer-col h4 {
  color: var(--color-text-inverse);
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-col a {
  color: var(--color-text-inverse-muted);
  transition: color var(--transition-fast);
}

.footer-col a:hover,
.footer-col a:focus-visible {
  color: var(--color-text-inverse);
  text-decoration: underline;
}

.site-footer strong {
  color: var(--color-text-inverse);
  font-weight: 600;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.footer-contact-item strong {
  color: var(--color-text-inverse);
  font-weight: 600;
}

.footer-contact-item span {
  color: var(--color-text-inverse-muted);
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-legal-links {
  display: flex;
  gap: var(--space-6);
}

.footer-legal-links a {
  color: var(--color-text-inverse-muted);
  font-size: var(--text-xs);
  transition: color var(--transition-fast);
}

.footer-legal-links a:hover {
  color: var(--color-text-inverse);
}

/* --------------------------------------------------------------------------
   Back to Top Button
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-base);
  z-index: 990;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background-color: var(--color-secondary);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Cookie Consent Banner (DSGVO-konform, kein Tracking)
   -------------------------------------------------------------------------- */
.cookie-banner {
  position: fixed;
  bottom: var(--space-4);
  left: var(--space-4);
  right: var(--space-4);
  max-width: 520px;
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-6);
  z-index: 9999;
  display: none;
}

.cookie-banner.visible {
  display: block;
}

.cookie-banner h4 {
  margin-bottom: var(--space-2);
}

.cookie-banner p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.cookie-actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}