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

:root {
  --bg: #0f1117;
  --bg2: #161b27;
  --bg3: #1e2536;
  --border: #2a3040;
  --text: #e2e8f0;
  --text-muted: #64748b;
  --blue: #3b82f6;
  --blue-dark: #2563eb;
  --green: #22c55e;
  --purple: #a855f7;
  --orange: #f97316;
  --red: #ef4444;
  --radius: 10px;
}

body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── LOGIN ────────────────────────────────────────── */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,.15) 0%, transparent 60%);
}

.login-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 360px;
  box-shadow: 0 25px 50px rgba(0,0,0,.5);
}

.login-logo {
  text-align: center;
  margin-bottom: 32px;
  color: var(--blue);
}

.login-logo svg { margin-bottom: 12px; }
.login-logo h1 { font-size: 22px; font-weight: 700; color: var(--text); }
.login-logo p  { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

/* ── LAYOUT ───────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--blue);
  border-bottom: 1px solid var(--border);
}

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  transition: all .15s;
  cursor: pointer;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: rgba(59,130,246,.15); color: var(--blue); }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
}

.main-content {
  flex: 1;
  margin-left: 220px;
  padding: 28px 32px;
  overflow-y: auto;
}

/* ── PAGES ────────────────────────────────────────── */
.page { display: none; }
.page.active { display: block; }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-header h2 { font-size: 22px; font-weight: 700; }
.page-subtitle { color: var(--text-muted); font-size: 13px; margin-top: 2px; display: block; }

/* ── STATS ────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.stat-icon svg { width: 22px; height: 22px; }
.stat-icon.blue   { background: rgba(59,130,246,.15); color: var(--blue); }
.stat-icon.green  { background: rgba(34,197,94,.15);  color: var(--green); }
.stat-icon.purple { background: rgba(168,85,247,.15); color: var(--purple); }
.stat-icon.orange { background: rgba(249,115,22,.15); color: var(--orange); }

.stat-value { font-size: 28px; font-weight: 700; display: block; line-height: 1; }
.stat-label { color: var(--text-muted); font-size: 12px; margin-top: 4px; display: block; }

/* ── CARDS ────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 20px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h3 { font-size: 15px; font-weight: 600; }

/* ── TABLE ────────────────────────────────────────── */
.table { width: 100%; border-collapse: collapse; }
.table th {
  padding: 11px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}
.table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  vertical-align: middle;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: rgba(255,255,255,.02); }

.table-toolbar {
  padding: 12px 16px;
  display: flex;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  background: var(--bg3);
}

/* ── BADGES ───────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-green  { background: rgba(34,197,94,.15);  color: var(--green); }
.badge-red    { background: rgba(239,68,68,.15);   color: var(--red); }
.badge-blue   { background: rgba(59,130,246,.15);  color: var(--blue); }
.badge-orange { background: rgba(249,115,22,.15);  color: var(--orange); }
.badge-gray   { background: rgba(100,116,139,.15); color: var(--text-muted); }

/* ── BUTTONS ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all .15s;
  text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg3); color: var(--text); }
.btn-danger { background: rgba(239,68,68,.15); color: var(--red); border: 1px solid rgba(239,68,68,.3); }
.btn-danger:hover { background: rgba(239,68,68,.25); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; padding: 11px; }
.btn-icon { background: none; border: none; cursor: pointer; color: var(--text-muted); padding: 4px; display: inline-flex; border-radius: 6px; transition: all .15s; }
.btn-icon:hover { color: var(--text); background: var(--bg3); }
.btn-icon svg { width: 16px; height: 16px; }

/* ── FORMS ────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--text-muted); margin-bottom: 6px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.input, .form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s;
}
.input:focus, .form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--blue);
}
.input-search { flex: 1; }

/* ── MODAL ────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  width: 520px;
  max-width: 95vw;
  box-shadow: 0 25px 50px rgba(0,0,0,.5);
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal form { padding: 20px 24px; }
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ── TOAST ────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  z-index: 9999;
  animation: slideUp .2s ease;
  max-width: 320px;
}
.toast.success { background: rgba(34,197,94,.15); color: var(--green); border: 1px solid rgba(34,197,94,.3); }
.toast.error   { background: rgba(239,68,68,.15);  color: var(--red);   border: 1px solid rgba(239,68,68,.3); }
@keyframes slideUp { from { opacity:0; transform:translateY(10px); } to { opacity:1; transform:translateY(0); } }

/* ── MISC ─────────────────────────────────────────── */
.hidden { display: none !important; }
.error-msg { background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.3); color: var(--red); padding: 8px 12px; border-radius: 8px; font-size: 12px; margin-bottom: 12px; }
.text-muted { color: var(--text-muted); font-size: 13px; margin-bottom: 12px; }
.key-text { font-family: monospace; font-size: 12px; background: var(--bg3); padding: 2px 6px; border-radius: 4px; letter-spacing: .05em; }

.code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-size: 12px;
  font-family: 'Courier New', monospace;
  white-space: pre-wrap;
  word-break: break-all;
  color: #a5d6ff;
  margin-bottom: 12px;
  max-height: 300px;
  overflow-y: auto;
}

.settings-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.settings-grid .card { margin-bottom: 0; }
.settings-grid .card form { padding: 20px; }

.action-group { display: flex; gap: 6px; }

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .settings-grid { grid-template-columns: 1fr; }
  .main-content { padding: 16px; }
}