:root {
  --bg: #0B0F19;
  --card: #111827;
  --border: #1E293B;
  --text: #F8FAFC;
  --muted: #94A3B8;
  --emerald: #10B981;
  --emerald-hover: #059669;
  --amber: #F59E0B;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 15, 25, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 12px 14px 10px;
}

.brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.brand-title {
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #10B981, #047857);
  display: grid;
  place-items: center;
  font-size: 15px;
}

.brand-title h1 {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-title p {
  font-size: 10.5px;
  color: var(--muted);
}

.home-pill {
  text-decoration: none;
  font-size: 11px;
  font-weight: 700;
  color: var(--emerald);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 4px 9px;
  border-radius: 99px;
}

.tab-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  background: var(--card);
  padding: 4px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.tab-btn {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 6px 4px;
  border-radius: 7px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn.is-active {
  background: var(--emerald);
  color: #ffffff;
}

.app-main {
  flex: 1;
  padding: 12px 14px;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.search-box input {
  width: 100%;
  padding: 9px 12px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 12.5px;
  outline: none;
}

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

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 8px;
  margin-bottom: 10px;
}

.chip {
  background: var(--card);
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 4px 8px;
  border-radius: 99px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.chip.is-active {
  background: rgba(16, 185, 129, 0.18);
  color: var(--emerald);
  border-color: var(--emerald);
}

.cards-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.item-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 11px;
}

.item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--emerald);
  margin-bottom: 4px;
}

.item-card h3 {
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 5px;
  color: #ffffff;
}

.item-summary {
  font-size: 11.5px;
  color: #CBD5E1;
  margin-bottom: 7px;
}

.item-code {
  background: #060911;
  border: 1px solid #1E293B;
  color: #34D399;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  padding: 7px 9px;
  border-radius: 8px;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 7px;
}

.item-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.tool-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 13px;
  padding: 12px;
  margin-bottom: 12px;
}

.tool-head {
  margin-bottom: 8px;
}

.tool-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 2px;
}

.tool-head h2 {
  font-size: 13px;
  font-weight: 800;
}

.mono-input,
.select-input {
  width: 100%;
  padding: 7px 9px;
  border-radius: 8px;
  background: #060911;
  border: 1px solid var(--border);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11.5px;
  margin-bottom: 7px;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 4px;
}

.two-col label {
  display: block;
  font-size: 10.5px;
  color: var(--muted);
  margin-bottom: 3px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 8px;
}

.btn-primary {
  background: var(--emerald);
  color: #ffffff;
  border: none;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
}

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

.btn-secondary {
  background: #1E293B;
  color: #E2E8F0;
  border: 1px solid #334155;
  padding: 6px 9px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
}

.w-full {
  width: 100%;
  margin-bottom: 8px;
}

.result-wrap {
  background: #060911;
  border: 1px solid #1E293B;
  border-radius: 9px;
  padding: 8px;
}

.result-code {
  color: #34D399;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-word;
  margin-bottom: 6px;
}

.bridge-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
  flex-wrap: wrap;
}

.btn-copy {
  background: rgba(16, 185, 129, 0.16);
  color: #34D399;
  border: 1px solid rgba(16, 185, 129, 0.35);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 10.5px;
  font-weight: 700;
  cursor: pointer;
}

.sat-link {
  color: var(--amber);
  font-size: 10.5px;
  font-weight: 700;
  text-decoration: none;
}

.sat-link:hover {
  text-decoration: underline;
}

.btn-outline-full {
  width: 100%;
  margin-top: 10px;
  padding: 9px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px dashed var(--emerald);
  color: var(--emerald);
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
}

.sat-intro {
  font-size: 11.5px;
  color: var(--muted);
  margin-bottom: 10px;
}

.sat-grid {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sat-card {
  display: block;
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 11px;
  padding: 10px 12px;
  transition: border-color 0.15s;
}

.sat-card:hover {
  border-color: var(--emerald);
}

.sat-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3px;
}

.sat-name {
  font-size: 12.5px;
  font-weight: 800;
  color: #ffffff;
}

.sat-domain {
  font-size: 10px;
  font-weight: 700;
  color: var(--emerald);
}

.sat-desc {
  font-size: 11px;
  color: var(--muted);
}

.app-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  color: var(--muted);
}