* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
}

.app {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

nav {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 15px 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 20px;
}

.theme-toggle {
  margin-left: auto;
}

nav a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  text-decoration: underline;
}

main {
  background: var(--color-bg-card);
  padding: 20px;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.header h1 {
  margin: 0;
}

.btn {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg-card);
  color: var(--color-text);
  text-decoration: none;
  cursor: pointer;
  font-size: 14px;
  margin-left: 8px;
}

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

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

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

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

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

.btn-small {
  padding: 4px 8px;
  font-size: 12px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

th {
  font-weight: 600;
  background: var(--color-bg-muted);
}

tr:hover {
  background: var(--color-bg-muted);
}

.error {
  background: var(--color-bg-error);
  color: var(--color-text-error);
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.section {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.section h3 {
  margin-top: 0;
  margin-bottom: 15px;
}

.section h4 {
  margin: 15px 0 10px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.section ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.section li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-lighter);
}

.tag {
  display: inline-block;
  background: var(--color-tag-bg);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.add-form {
  display: flex;
  gap: 10px;
  margin-top: 15px;
  flex-wrap: wrap;
}

.add-form select,
.add-form input {
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  min-width: 200px;
  background: var(--color-bg-card);
  color: var(--color-text);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 14px;
  background: var(--color-bg-card);
  color: var(--color-text);
}

.form-group textarea {
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.form-actions {
  display: flex;
  gap: 10px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
}

.need-list .header {
  margin-bottom: 20px;
}

.need-form {
  background: var(--color-bg-muted);
  padding: 20px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.need-items {
  list-style: none;
  padding: 0;
}

.need-items li {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 15px;
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  margin-bottom: 10px;
}

.need-info p {
  margin: 5px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

a {
  color: var(--color-primary);
}

a:hover {
  text-decoration: underline;
}

/* Graph styles */
.graph-container {
  width: 100%;
}

.graph-hint {
  color: var(--color-text-muted);
  font-size: 14px;
  margin-bottom: 15px;
}

.selected-info {
  margin-top: 15px;
  padding: 15px;
  background: var(--color-bg-muted);
  border-radius: 8px;
}

.selected-info h3 {
  margin: 0 0 10px;
}

.selected-info p {
  margin: 5px 0;
  color: var(--color-text-muted);
}

.legend {
  margin-top: 20px;
  padding: 15px;
  background: var(--color-bg-muted);
  border-radius: 8px;
}

.legend h4 {
  margin: 0 0 10px;
  font-size: 14px;
}

.legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.legend-line {
  width: 30px;
  border-radius: 2px;
}

/* Weight control styles */
.weight-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.weight-control input[type="range"] {
  width: 80px;
  cursor: pointer;
}

.weight-value {
  min-width: 20px;
  text-align: center;
  font-weight: 600;
}

.weight-display {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-left: auto;
}

/* ID Card Styles */
.id-card {
  width: 100%;
}

.id-card-inner {
  background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
  background-image:
    radial-gradient(white 1px, transparent 1px),
    linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
  background-size: 50px 50px, 100% 100%;
  background-position: 0 0, 0 0;
  color: #fff;
  border-radius: 12px;
  padding: 25px;
  min-height: 500px;
  position: relative;
  overflow: hidden;
}

.id-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 15px;
}

.id-card-header-left {
  flex: 1;
}

.id-card-header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
}

.id-card-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 0;
  color: #fff;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.id-profile-pic {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  object-fit: cover;
  border: 2px solid rgba(255,255,255,0.3);
}

.id-profile-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 8px;
  background: linear-gradient(135deg, #4ecdc4 0%, #44a8a0 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255,255,255,0.3);
}

.id-profile-placeholder span {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

.id-card-actions {
  display: flex;
  gap: 8px;
}

.id-card-actions .btn {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.3);
  color: #fff;
}

.id-card-actions .btn:hover {
  background: rgba(255,255,255,0.2);
}

.id-card-body {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 30px;
}

.id-card-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.id-field {
  font-size: 1rem;
  line-height: 1.4;
}

.id-field-block {
  margin-top: 15px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.id-label {
  color: #4ecdc4;
  font-weight: 500;
}

.id-card-right {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.id-bio {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #e0e0e0;
}

.id-relationships {
  margin-top: 10px;
}

.id-section-title {
  font-size: 1.5rem;
  margin: 0 0 15px;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  padding-bottom: 8px;
}

.id-rel-group {
  margin-bottom: 12px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.id-rel-label {
  color: #a0a0a0;
}

.id-rel-group a {
  color: #4ecdc4;
  text-decoration: none;
}

.id-rel-group a:hover {
  text-decoration: underline;
}

.id-rel-type {
  color: #888;
  font-size: 0.85em;
}

.id-card-warnings {
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.2);
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

.id-warning {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: #ff6b6b;
}

.warning-dot {
  width: 8px;
  height: 8px;
  background: #ff6b6b;
  border-radius: 50%;
  flex-shrink: 0;
}

.warning-desc {
  color: #ccc;
}

/* Management section */
.id-card-manage {
  margin-top: 20px;
  background: var(--color-bg-muted);
  border-radius: 8px;
  padding: 15px;
}

.id-card-manage summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.1rem;
  padding: 5px 0;
}

.id-card-manage[open] summary {
  margin-bottom: 15px;
  border-bottom: 1px solid var(--color-border-light);
  padding-bottom: 10px;
}

.manage-section {
  margin-bottom: 25px;
}

.manage-section h3 {
  margin: 0 0 15px;
  font-size: 1rem;
}

.manage-relationships {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 15px;
}

.manage-rel-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--color-bg-card);
  border-radius: 6px;
  flex-wrap: wrap;
}

.manage-rel-item a {
  font-weight: 500;
  min-width: 120px;
}

.manage-needs-list {
  list-style: none;
  padding: 0;
  margin: 0 0 15px;
}

.manage-needs-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: var(--color-bg-card);
  border-radius: 6px;
  margin-bottom: 8px;
}

.manage-needs-list li .btn {
  margin-left: auto;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .id-card-body {
    grid-template-columns: 1fr;
  }

  .id-card-title {
    font-size: 1.8rem;
  }

  .id-card-header {
    flex-direction: column;
    gap: 15px;
  }
}