:root {
  --bg: #0b0f14;
  --bg-2: #131923;
  --card: #171e2a;
  --card-hover: #1c2432;
  --border: #23304a;
  --border-strong: #2d3d5c;
  --text: #e4ecf7;
  --text-dim: #8a97ad;
  --text-mute: #5a6478;
  --accent: #ff7a1a;
  --accent-2: #ffb257;
  --accent-soft: rgba(255, 122, 26, 0.12);
  --cyan: #4ad3ff;
  --green: #6ee7a5;
  --purple: #b391ff;
  --danger: #ff5c7c;
  --danger-soft: rgba(255, 92, 124, 0.12);
  --success-soft: rgba(110, 231, 165, 0.12);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, "SF Mono", Consolas, monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Inter", "Segoe UI", Roboto, sans-serif;
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 122, 26, 0.08), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(74, 211, 255, 0.06), transparent 60%),
    var(--bg);
}

.app {
  max-width: 1400px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

/* ---------- Header ---------- */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #ff4444);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(255, 122, 26, 0.35);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 20px;
  color: #fff;
}

.brand-text h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-text p {
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.user-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
}

.user-chip svg { width: 14px; height: 14px; color: var(--accent); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.btn:hover:not(:disabled) {
  background: var(--card-hover);
  border-color: var(--border-strong);
  transform: translateY(-1px);
}

.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0b0f14;
  font-weight: 600;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.btn svg { width: 16px; height: 16px; }

/* ---------- Admin Panel ---------- */
.admin-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}

.admin-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.admin-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
  gap: 16px;
  flex-wrap: wrap;
}

.admin-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 4px;
}

.admin-title svg { width: 16px; height: 16px; color: var(--accent); }

.admin-sub {
  font-size: 13px;
  color: var(--text-dim);
}

.admin-sub code {
  font-family: var(--font-mono);
  background: var(--bg-2);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--accent-2);
  font-size: 12px;
}

/* ---------- Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px 18px;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--accent);
}

.stat-card.cyan::before { background: var(--cyan); }
.stat-card.green::before { background: var(--green); }
.stat-card.purple::before { background: var(--purple); }

.stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  font-weight: 600;
  margin-bottom: 6px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  color: var(--text);
}

/* ---------- Drop Zone ---------- */
.drop-zone {
  border: 2px dashed var(--border-strong);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  background: var(--bg-2);
  cursor: pointer;
  transition: all 0.2s ease;
}

.drop-zone:hover, .drop-zone.dragging {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.drop-zone-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  text-align: left;
}

.drop-zone-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.drop-zone-icon svg { width: 22px; height: 22px; }

.drop-zone-inner strong { color: var(--text); font-size: 15px; }
.drop-zone-inner > div:last-child { color: var(--text-dim); font-size: 13px; }

.drop-zone-formats {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
  margin-top: 4px;
}

.upload-status {
  margin-top: 12px;
  font-size: 13px;
  min-height: 20px;
}

.upload-status.success { color: var(--green); }
.upload-status.error { color: var(--danger); }
.upload-status.loading { color: var(--accent-2); }

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 240px;
  position: relative;
}

.search-box svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--text-mute);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 12px 14px 12px 40px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: all 0.15s ease;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--bg-2);
}

.search-box input::placeholder { color: var(--text-mute); }

.filter-chips {
  display: flex;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 4px;
}

.chip {
  padding: 8px 14px;
  border-radius: 8px;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.chip:hover { color: var(--text); }

.chip.active {
  background: var(--accent);
  color: #0b0f14;
  font-weight: 600;
}

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

/* ---------- Sections ---------- */
.section { margin-bottom: 32px; }

.section-title {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ---------- Cards ---------- */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 16px;
}

.ns-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.ns-card:hover { border-color: var(--border-strong); }
.ns-card.hidden { display: none; }

.ns-header {
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background 0.15s ease;
}

.ns-header:hover { background: var(--card-hover); }
.ns-card.open .ns-header { border-bottom-color: var(--border); }

.ns-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.ns-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: 5px;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.ns-badge.namespace { background: rgba(74, 211, 255, 0.15); color: var(--cyan); }
.ns-badge.struct    { background: rgba(179, 145, 255, 0.15); color: var(--purple); }
.ns-badge.function  { background: rgba(110, 231, 165, 0.15); color: var(--green); }

.ns-name {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ns-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-mute);
  background: var(--bg-2);
  padding: 3px 8px;
  border-radius: 6px;
  flex-shrink: 0;
}

.ns-chevron {
  color: var(--text-mute);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.ns-card.open .ns-chevron,
.fn-card.open .ns-chevron { transform: rotate(180deg); }

.ns-body {
  display: none;
  max-height: 500px;
  overflow-y: auto;
}

.ns-card.open .ns-body { display: block; }

.ns-body::-webkit-scrollbar { width: 8px; }
.ns-body::-webkit-scrollbar-track { background: transparent; }
.ns-body::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
.ns-body::-webkit-scrollbar-thumb:hover { background: var(--text-mute); }

.const-row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 12px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 13px;
  transition: background 0.1s ease;
}

.const-row:last-child { border-bottom: none; }
.const-row:hover { background: var(--card-hover); }
.const-row.hidden { display: none; }

.const-name {
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.const-value {
  color: var(--accent-2);
  font-weight: 600;
  text-align: right;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-mute);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}

.copy-btn.copied { color: var(--green); border-color: var(--green); }
.copy-btn svg { width: 14px; height: 14px; }

/* ---------- Function cards ---------- */
.fn-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 12px;
}

.fn-card.hidden { display: none; }

.fn-header {
  padding: 12px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  transition: background 0.15s ease;
}

.fn-header:hover { background: var(--card-hover); }
.fn-body { display: none; }
.fn-card.open .fn-body { display: block; }

.fn-code {
  background: var(--bg);
  padding: 16px 18px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text);
  overflow-x: auto;
  white-space: pre;
  border-top: 1px solid var(--border);
}

.fn-code::-webkit-scrollbar { height: 8px; }
.fn-code::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }

/* ---------- Empty state ---------- */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}

.empty svg { width: 48px; height: 48px; margin-bottom: 16px; opacity: 0.5; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--card);
  border: 1px solid var(--border-strong);
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  font-size: 14px;
  opacity: 0;
  pointer-events: none;
  transition: all 0.25s ease;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast svg { color: var(--green); width: 16px; height: 16px; }

/* ---------- Auth pages ---------- */
.auth-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow);
}

.auth-card .brand { justify-content: center; }

.auth-card label {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 6px;
  margin-top: 14px;
  font-weight: 500;
}

.auth-card input {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  margin-top: 4px;
  transition: all 0.15s ease;
}

.auth-card input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--card);
}

.alert {
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 13px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert-error {
  background: var(--danger-soft);
  border-color: rgba(255, 92, 124, 0.3);
  color: var(--danger);
}

.alert-success {
  background: var(--success-soft);
  border-color: rgba(110, 231, 165, 0.3);
  color: var(--green);
}

.alert code {
  font-family: var(--font-mono);
  background: rgba(0,0,0,0.3);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 12px;
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .app { padding: 20px 16px 60px; }
  .cards-grid { grid-template-columns: 1fr; }
  .filter-chips { width: 100%; overflow-x: auto; }
  .header { gap: 16px; }
  .header-actions { width: 100%; justify-content: flex-end; }
  .user-chip { flex: 0 1 auto; }
  .drop-zone-inner { flex-direction: column; text-align: center; }
}