:root {
  --bg-primary: #0a0a0c;
  --bg-secondary: #0d0d0f;
  --bg-card: rgba(15, 15, 18, 0.6);
  --accent: #f0d890;
  --accent-dim: #e8cc7a;
  --accent-muted: #dfc175;
  --text-primary: #ffffff;
  --text-secondary: #c8c8d8;
  --text-muted: #b8b8c8;
  --border-color: rgba(240, 216, 144, 0.15);
  --border-hover: rgba(240, 216, 144, 0.3);
  --transition-speed: 400ms;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
  overflow: hidden;
}

h1, h2, h3 {
  font-weight: 200;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

p {
  font-weight: 300;
  letter-spacing: 0.03em;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* Canvas Background */
#geometryCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* App Shell */
.app-shell {
  height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

/* Navbar */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 2.5rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand-text {
  font-size: 0.75rem;
  font-weight: 200;
  letter-spacing: 0.25em;
  color: var(--accent);
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--accent);
  font-family: var(--font-family);
  font-size: 0.65rem;
  font-weight: 300;
  letter-spacing: 0.12em;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  transition: all var(--transition-speed) ease-in-out;
  text-transform: uppercase;
}

.nav-action-btn:hover {
  border-color: var(--accent);
  opacity: 0.8;
}

.nav-action-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* User Menu */
.user-menu {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.user-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--accent-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: 0;
}

.user-name {
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.user-logout {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-family);
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  transition: color var(--transition-speed) ease-in-out;
}

.user-logout:hover {
  color: var(--accent);
}

/* Landing Page */
.main-content {
  flex: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 2rem;
  width: 100%;
}

.landing-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: calc(100vh - 80px);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 200;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.page-subtitle {
  font-size: 0.8rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.landing-desc {
  max-width: 500px;
  font-size: 0.85rem;
  margin-bottom: 2.5rem;
}

.btn-primary {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-family);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  padding: 0.7rem 2rem;
  cursor: pointer;
  transition: all var(--transition-speed) ease-in-out;
  text-transform: uppercase;
}

.btn-primary:hover {
  background: rgba(240, 216, 144, 0.08);
  opacity: 0.85;
}

/* App Content */
.app-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}

/* Toolbar */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 2rem;
  border-bottom: 1px solid var(--border-color);
  background: rgba(10, 10, 12, 0.7);
  gap: 1rem;
}

.toolbar-left {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toolbar-right {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.toolbar-status {
  font-size: 0.6rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  margin-left: 0.5rem;
}

.search-input {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.7rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.8rem;
  width: 220px;
  outline: none;
  transition: border-color var(--transition-speed) ease-in-out;
}

.search-input:focus {
  border-color: var(--accent);
}

.search-input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

select.search-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5' viewBox='0 0 8 5'%3E%3Cpath d='M0 0l4 5 4-5z' fill='%23b8b8c8'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
  padding-right: 1.8rem;
  cursor: pointer;
}

select.search-input option {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 0.3rem;
}

/* Explorer Layout */
.explorer-layout {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

/* Left Panel - Table Selector */
.left-panel {
  width: 260px;
  min-width: 260px;
  border-right: 1px solid var(--border-color);
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.category-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0;
  cursor: pointer;
  transition: opacity var(--transition-speed) ease-in-out;
}

.category-item:hover {
  opacity: 0.8;
}

.category-cb {
  appearance: none;
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  border: 1px solid var(--border-color);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
}

.category-cb:checked {
  border-color: var(--accent);
  background: var(--accent);
}

.category-cb:checked::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 3px;
  width: 3px;
  height: 6px;
  border: solid var(--bg-primary);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.category-label {
  font-size: 0.62rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  flex: 1;
}

.category-count {
  font-size: 0.55rem;
  font-weight: 300;
  color: var(--text-muted);
}

.category-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.table-list {
  flex: 1;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
  padding: 0 0.4rem 0.5rem;
}

.table-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  border-radius: 2px;
  transition: background 200ms ease;
}

.table-item:hover {
  background: rgba(240, 216, 144, 0.04);
}

.table-item-cb {
  appearance: none;
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border: 1px solid var(--border-color);
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
  position: relative;
}

.table-item-cb:checked {
  border-color: var(--accent-dim);
  background: var(--accent-dim);
}

.table-item-cb:checked::after {
  content: '';
  position: absolute;
  top: 0px;
  left: 2px;
  width: 3px;
  height: 5px;
  border: solid var(--bg-primary);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.table-item-name {
  font-size: 0.62rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.table-item.active .table-item-name {
  color: var(--accent);
}

.graph-container {
  flex: 1;
  position: relative;
  background: transparent;
  min-height: 0;
}

.graph-container > div {
  width: 100% !important;
  height: 100% !important;
}

/* Side Panel */
.side-panel {
  width: 380px;
  min-width: 380px;
  border-left: 1px solid var(--border-color);
  background: rgba(10, 10, 12, 0.85);
  backdrop-filter: blur(12px);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.panel-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 2rem;
}

.panel-placeholder p {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

/* Panel Content */
.panel-header {
  padding: 1.5rem 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.panel-title {
  font-size: 0.85rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.3rem;
}

.panel-description {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-weight: 300;
}

.panel-meta {
  display: flex;
  gap: 1rem;
  margin-top: 0.8rem;
}

.meta-badge {
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border-color);
  color: var(--text-muted);
}

.meta-badge.source-defender { border-color: rgba(100, 180, 255, 0.3); color: #64b4ff; }
.meta-badge.source-sentinel { border-color: rgba(100, 200, 100, 0.3); color: #8bc68b; }
.meta-badge.retention { border-color: rgba(240, 216, 144, 0.2); color: var(--accent-dim); }

.panel-section {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.panel-section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

/* Column List */
.column-list {
  list-style: none;
}

.column-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid rgba(240, 216, 144, 0.05);
  cursor: default;
  transition: background var(--transition-speed) ease-in-out;
}

.column-item:hover {
  background: rgba(240, 216, 144, 0.03);
}

.column-item:last-child {
  border-bottom: none;
}

.column-name {
  font-size: 0.72rem;
  font-weight: 400;
  color: var(--text-primary);
  letter-spacing: 0.02em;
  min-width: 140px;
  flex-shrink: 0;
}

.column-name.is-link {
  color: var(--accent);
  cursor: pointer;
}

.column-name.is-link:hover {
  text-decoration: underline;
}

.column-desc {
  font-size: 0.65rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Query Examples */
.query-card {
  background: rgba(15, 15, 18, 0.5);
  border: 1px solid var(--border-color);
  padding: 0.8rem;
  margin-bottom: 0.5rem;
}

.query-name {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--accent-dim);
  letter-spacing: 0.05em;
  margin-bottom: 0.3rem;
}

.query-desc {
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.query-code {
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.6rem;
  color: var(--text-secondary);
  background: rgba(10, 10, 12, 0.8);
  padding: 0.5rem;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
  max-height: 120px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

/* Action Types */
.action-type-item {
  padding: 0.3rem 0;
  border-bottom: 1px solid rgba(240, 216, 144, 0.05);
}

.action-type-name {
  font-size: 0.7rem;
  font-weight: 400;
  color: #64b4ff;
  letter-spacing: 0.02em;
}

.action-type-desc {
  font-size: 0.6rem;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.4;
  margin-top: 0.15rem;
}

/* Loading */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10, 10, 12, 0.8);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.loading-text {
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  margin-top: 1.5rem;
}

.loading-arc-container {
  position: relative;
  width: 60px;
  height: 60px;
}

.loading-arc-container svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.arc1 { animation: rotate-arc 80s linear infinite; }
.arc2 { animation: rotate-arc 100s linear infinite reverse; }
.arc3 { animation: rotate-arc 120s linear infinite; }

@keyframes rotate-arc {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Table Count Badge */
.table-count {
  font-size: 0.6rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--accent-dim);
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--border-color);
  margin-left: 0.5rem;
}

/* Toast notifications */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(15, 15, 18, 0.9);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1.2rem;
  font-size: 0.7rem;
  font-weight: 300;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  z-index: 300;
  backdrop-filter: blur(8px);
  transition: opacity 400ms ease-in-out;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(5, 5, 7, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.modal-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 2rem;
  max-width: 520px;
  width: 90%;
}

.modal-card code {
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.65rem;
  color: var(--accent);
  background: rgba(240, 216, 144, 0.08);
  padding: 0.1rem 0.3rem;
}

.modal-card textarea {
  font-family: 'Cascadia Code', 'Consolas', monospace;
  font-size: 0.65rem;
  line-height: 1.5;
}

.toast.error {
  border-color: rgba(224, 112, 112, 0.4);
  color: #e07070;
}

/* Legend */
.legend {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background: rgba(10, 10, 12, 0.85);
  border: 1px solid var(--border-color);
  padding: 0.8rem 1rem;
  z-index: 10;
  backdrop-filter: blur(8px);
}

.legend-title {
  font-size: 0.55rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.3rem;
}

.legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.legend-label {
  font-size: 0.6rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 2px;
}