/* Base styles */
body {
  margin: 0;
  padding: 0;
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica",
    "Arial", sans-serif;
  background-color: #0a0e27;
  color: #e0e0e0;
}

/* ============================================
   HEADER (Network View Style)
   ============================================ */

header {
  background-color: #0f1434;
  border-bottom: 1px solid #1a2040;
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.header-content {
  max-width: 1800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header-text h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #64ffda;
  margin: 0;
}

.tagline {
  font-size: 0.85rem;
  color: #8892b0;
  margin: 0.25rem 0 0 0;
  font-style: italic;
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: #8892b0;
  text-decoration: none;
  padding: 0.4rem 0.9rem;
  border-radius: 6px;
  transition: all 0.3s ease;
}

.nav-link:hover {
  color: #64ffda;
  background-color: rgba(100, 255, 218, 0.1);
}

.nav-link.active {
  color: #64ffda;
  font-weight: 600;
  background-color: rgba(100, 255, 218, 0.15);
}

/* ============================================
   CONTAINER
   ============================================ */

.container {
  max-width: 1800px;
  margin: 0 auto;
  padding: 20px;
}

/* ============================================
   CONTROLS
   ============================================ */

.controls {
  background-color: #0f1434;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
  border: 1px solid #1a2040;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.controls-row {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.controls-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 10px;
  border-top: 1px solid #1a2040;
}

.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #8892b0;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}

.checkbox-label:hover {
  color: #64ffda;
}

.search-clear-group {
  display: flex;
  gap: 10px;
  align-items: center;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 180px;
}

.control-group label {
  color: #8892b0;
  font-size: 0.9rem;
  font-weight: 500;
}

.control-group select,
.control-group input[type="number"],
#name-search {
  padding: 8px 12px;
  background-color: #0a0e27;
  border: 1px solid #1a2040;
  border-radius: 4px;
  color: #e0e0e0;
  font-size: 0.95rem;
}

.control-group select:focus,
.control-group input:focus,
#name-search:focus {
  outline: none;
  border-color: #64ffda;
  box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

.control-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

#clear-filters {
  padding: 10px 20px;
  background-color: #64ffda;
  color: #0a0e27;
  border: none;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  white-space: nowrap;
}

#clear-filters:hover {
  background-color: #52d4c2;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(100, 255, 218, 0.3);
}

#name-search {
  min-width: 250px;
}

/* Month Select Dropdown */
.month-select {
  position: relative;
}

.select-box {
  padding: 8px 12px;
  background-color: #0a0e27;
  border: 1px solid #1a2040;
  border-radius: 4px;
  color: #e0e0e0;
  cursor: pointer;
  font-size: 0.95rem;
}

.select-box:hover {
  border-color: #64ffda;
}

.checkboxes {
  display: none;
  position: absolute;
  background-color: #0f1434;
  border: 1px solid #1a2040;
  border-radius: 4px;
  padding: 10px;
  margin-top: 5px;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  max-height: 300px;
  overflow-y: auto;
}

.checkboxes label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  color: #e0e0e0;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.2s;
}

.checkboxes label:hover {
  background-color: rgba(100, 255, 218, 0.1);
}

.checkboxes input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

/* ============================================
   VISUALIZATION
   ============================================ */

#visualization {
  background-color: #0f1434;
  border-radius: 8px;
  border: 1px solid #1a2040;
  overflow: hidden;
}

#visualization svg {
  display: block;
}

/* Links */
.link {
  stroke: #1a2040;
  stroke-opacity: 0.6;
}

/* Nodes */
.node {
  cursor: pointer;
  stroke: #0a0e27;
  stroke-width: 1.5px;
}

.node:hover {
  stroke: #64ffda;
  stroke-width: 3px;
}

/* Labels */
.label {
  font-size: 10px;
  fill: #8892b0;
  pointer-events: none;
  user-select: none;
}

/* ============================================
   STATS
   ============================================ */

.stats {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #0f1434;
  padding: 12px 20px;
  border-radius: 6px;
  color: #8892b0;
  font-size: 0.9rem;
  border: 1px solid #1a2040;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.stats span {
  color: #64ffda;
  font-weight: 600;
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: #0a0e27;
}

::-webkit-scrollbar-thumb {
  background: #1a2040;
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: #2a3050;
}

/* ============================================
   TERMS OF USE MODAL & FOOTER
   ============================================ */

/* Modal Overlay */
.terms-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.85);
  z-index: 9999;
  overflow-y: auto;
  padding: 2rem;
}

.terms-modal.show {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Modal Content */
.terms-content {
  background-color: var(--bg-secondary, #ffffff);
  border-radius: 12px;
  max-width: 800px;
  width: 100%;
  padding: 3rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

/* For network view (no CSS variables) */
body:not(.dark-mode) .terms-content {
  background-color: #ffffff;
  color: #2d2d2d;
}

.terms-content h2 {
  color: var(--accent-color, #0066cc);
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
}

.terms-content h3 {
  color: var(--text-primary, #2d2d2d);
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.terms-content p,
.terms-content ul {
  color: var(--text-primary, #2d2d2d);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.terms-content ul {
  padding-left: 2rem;
}

.terms-content li {
  margin-bottom: 0.5rem;
}

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

/* Buttons */
.terms-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
  justify-content: flex-end;
}

.btn-primary,
.btn-secondary {
  padding: 0.75rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--accent-color, #0066cc);
  color: white;
}

.btn-primary:hover {
  background-color: var(--accent-hover, #0052a3);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-secondary, #666666);
  border: 1px solid var(--border-color, #e0e0e0);
}

.btn-secondary:hover {
  background-color: var(--bg-primary, #f5f5f5);
}

/* Footer */
.site-footer {
  background-color: var(--bg-secondary, #0f1434);
  border-top: 1px solid var(--border-color, #1a2040);
  padding: 1.5rem 2rem;
  text-align: center;
  margin-top: 3rem;
}

.site-footer p {
  color: var(--text-secondary, #8892b0);
  font-size: 0.9rem;
  margin: 0;
}

.site-footer a {
  color: var(--accent-color, #64ffda);
  text-decoration: none;
  font-weight: 500;
}

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

/* Scrollbar for modal */
.terms-content::-webkit-scrollbar {
  width: 8px;
}

.terms-content::-webkit-scrollbar-track {
  background: var(--bg-primary, #f5f5f5);
  border-radius: 4px;
}

.terms-content::-webkit-scrollbar-thumb {
  background: var(--border-color, #e0e0e0);
  border-radius: 4px;
}

.terms-content::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary, #666666);
}