:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #222536;
  --border: #2e3147;
  --text: #e2e4f0;
  --text-muted: #7b7f9e;
  --primary: #4f6ef7;
  --primary-hover: #3d5ae0;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #60a5fa;
  --sidebar-width: 220px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ─────────────────────────────────────────────────────────────── */

.app-layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.sidebar {
  width: var(--sidebar-width);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-logo {
  padding: 20px 16px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-logo .logo-icon { font-size: 1.4rem; }

.sidebar-nav { flex: 1; padding: 12px 0; overflow-y: auto; }

.nav-section {
  padding: 6px 16px 2px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 16px;
  color: var(--text-muted);
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: all 0.15s;
  font-size: 0.875rem;
}
.nav-link:hover { background: var(--surface2); color: var(--text); text-decoration: none; }
.nav-link.active { color: var(--primary); border-left-color: var(--primary); background: rgba(79,110,247,0.08); }
.nav-icon { width: 16px; text-align: center; }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.sidebar-user { margin-bottom: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-role { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 8px; }

.main-content {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px;
}

/* ── Typography ─────────────────────────────────────────────────────────── */

h1 { font-size: 1.5rem; font-weight: 600; margin-bottom: 4px; }
h2 { font-size: 1.1rem; font-weight: 600; margin: 20px 0 12px; }
h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 8px; }

.page-header { margin-bottom: 24px; }
.page-subtitle { color: var(--text-muted); font-size: 0.875rem; }

/* ── Cards ───────────────────────────────────────────────────────────────── */

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px 20px;
}
.stat-card .label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.stat-card .value { font-size: 1.8rem; font-weight: 700; margin-top: 4px; }
.stat-card .sub { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }

/* ── Buttons ─────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  transition: all 0.15s;
}
.btn:hover { background: var(--border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-danger { background: rgba(248,113,113,0.15); border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: rgba(248,113,113,0.25); }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* ── Forms ───────────────────────────────────────────────────────────────── */

.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 0.8rem; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.04em; }
.form-input, .form-select {
  width: 100%;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.875rem;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--primary); }
.form-input::placeholder { color: var(--text-muted); }
.form-hint { font-size: 0.75rem; color: var(--text-muted); margin-top: 4px; }

/* ── Tables ──────────────────────────────────────────────────────────────── */

table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); padding: 8px 12px; border-bottom: 1px solid var(--border); }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.875rem; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ── Badges ──────────────────────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.badge-admin    { background: rgba(79,110,247,0.2);  color: var(--primary); }
.badge-viewer   { background: rgba(107,114,128,0.2); color: #9ca3af; }
.badge-active   { background: rgba(52,211,153,0.15); color: var(--success); }
.badge-inactive { background: rgba(248,113,113,0.15); color: var(--danger); }
.badge-role     { background: rgba(96,165,250,0.15); color: var(--info); }

/* ── Modals ──────────────────────────────────────────────────────────────── */

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
}
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  min-width: 420px;
  max-width: 600px;
  width: 100%;
}
.modal-title { font-size: 1.1rem; font-weight: 600; margin-bottom: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 24px; }

/* ── API Inspector ───────────────────────────────────────────────────────── */

.api-inspector {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-top: 20px;
  overflow: hidden;
}

.api-inspector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--surface2);
  cursor: pointer;
  user-select: none;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.api-inspector-header:hover { color: var(--text); }
.api-inspector-title { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.api-inspector-badge {
  background: rgba(79,110,247,0.2);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.api-inspector-body { padding: 16px; display: none; }
.api-inspector-body.open { display: block; }

.api-section { margin-bottom: 16px; }
.api-section-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

.api-method { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.75rem; font-weight: 700; margin-right: 8px; }
.api-method-post { background: rgba(251,191,36,0.15); color: var(--warning); }
.api-method-get  { background: rgba(52,211,153,0.15);  color: var(--success); }
.api-method-delete { background: rgba(248,113,113,0.15); color: var(--danger); }

.api-url { font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.8rem; color: var(--text); word-break: break-all; }

pre.api-code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.78rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
  line-height: 1.6;
}

.api-status { display: inline-block; padding: 2px 8px; border-radius: 4px; font-size: 0.78rem; font-weight: 600; }
.api-status-ok   { background: rgba(52,211,153,0.15); color: var(--success); }
.api-status-err  { background: rgba(248,113,113,0.15); color: var(--danger); }

.api-duration { font-size: 0.75rem; color: var(--text-muted); margin-left: 8px; }

/* ── Alerts ──────────────────────────────────────────────────────────────── */

.alert { padding: 12px 16px; border-radius: 6px; font-size: 0.875rem; margin-bottom: 16px; }
.alert-success { background: rgba(52,211,153,0.1); border: 1px solid rgba(52,211,153,0.3); color: var(--success); }
.alert-error   { background: rgba(248,113,113,0.1); border: 1px solid rgba(248,113,113,0.3); color: var(--danger); }
.alert-warning { background: rgba(251,191,36,0.1);  border: 1px solid rgba(251,191,36,0.3);  color: var(--warning); }
.alert-info    { background: rgba(96,165,250,0.1);  border: 1px solid rgba(96,165,250,0.3);  color: var(--info); }

/* ── Empty state ──────────────────────────────────────────────────────────── */

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 2.5rem; margin-bottom: 12px; }

/* ── Flex helpers ─────────────────────────────────────────────────────────── */

.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-gap { display: flex; gap: 10px; align-items: center; }
.mt-4 { margin-top: 4px; }
.mb-4 { margin-bottom: 16px; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }

/* ── Login page ───────────────────────────────────────────────────────────── */

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 380px;
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo h1 { font-size: 1.4rem; margin-top: 8px; }
.login-logo .logo-icon { font-size: 2.5rem; }

/* ── Tabs ─────────────────────────────────────────────────────────────────── */

.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab {
  padding: 8px 16px;
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ── Loading ─────────────────────────────────────────────────────────────── */

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Reports Analytics ────────────────────────────────────────────────── */
.metric-tabs { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:20px; }
.metric-tab {
  padding: 5px 14px; border-radius: 20px; font-size: 0.78rem; font-weight: 600;
  cursor: pointer; border: 1px solid var(--border); background: var(--surface2);
  color: var(--text-muted); transition: all 0.15s;
}
.metric-tab:hover { color: var(--text); border-color: var(--text-muted); }
.metric-tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.summary-cards { display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:16px; margin-bottom:20px; }
.summary-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 16px 20px;
  border-left: 3px solid var(--primary);
}
.summary-card.metric-downloaded { border-left-color: #34d399; }
.summary-card.metric-uploaded   { border-left-color: #fbbf24; }
.summary-card.metric-api        { border-left-color: #a78bfa; }
.summary-card .sc-label { font-size:0.72rem; text-transform:uppercase; letter-spacing:0.05em; color:var(--text-muted); margin-bottom:6px; }
.summary-card .sc-value { font-size:1.6rem; font-weight:700; line-height:1.2; }
.summary-card .sc-sub   { font-size:0.75rem; color:var(--text-muted); margin-top:4px; }

.chart-toolbar { display:flex; gap:8px; align-items:center; flex-wrap:wrap; margin-bottom:16px; }
.chart-toolbar .chart-title { font-weight:600; flex:1; font-size:0.95rem; }
.btn-group { display:flex; border:1px solid var(--border); border-radius:6px; overflow:hidden; }
.btn-group .btn { border:none; border-radius:0; border-right:1px solid var(--border); }
.btn-group .btn:last-child { border-right:none; }
.btn-group .btn.active { background:var(--primary); color:#fff; }

.chart-wrap { position:relative; height:280px; }
.chart-wrap canvas { max-height:280px; }

.preset-btns { display:flex; gap:6px; flex-wrap:wrap; margin-bottom:12px; }
.preset-btn {
  padding: 4px 12px; border-radius:20px; font-size:0.78rem; font-weight:500;
  cursor:pointer; border:1px solid var(--border); background:var(--surface2); color:var(--text-muted);
  transition:all 0.15s;
}
.preset-btn:hover { color:var(--text); border-color:var(--text-muted); }
.preset-btn.active { background:rgba(79,110,247,0.15); border-color:var(--primary); color:var(--primary); }

.data-table-wrap { overflow-x:auto; }
.data-table-wrap table td.num { text-align:right; font-family:'SF Mono','Fira Code',monospace; font-size:0.8rem; }
.data-table-wrap table tr.total-row td { font-weight:700; background:rgba(79,110,247,0.06); border-top:2px solid var(--primary); }