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

:root {
  --bg: #0d0f14;
  --surface: #161a24;
  --surface2: #1e2330;
  --border: #2a3044;
  --accent: #6c63ff;
  --accent2: #00d4aa;
  --danger: #ff4d6d;
  --warn: #ffa94d;
  --text: #e8eaf0;
  --muted: #7a8299;
  --green: #40c057;
  --red: #ff4d6d;
}

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

/* ── Header ── */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

.logo svg { width: 28px; height: 28px; }

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

.status-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 5px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.status-dot.running {
  background: var(--green);
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

.status-dot.stopped { background: var(--red); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.auth-badge {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 12px;
  font-weight: 600;
}
.auth-badge.ok { background: #1a3a2a; color: var(--green); border: 1px solid #2a5a3a; }
.auth-badge.fail { background: #3a1a1a; color: var(--red); border: 1px solid #5a2a2a; }

/* ── Layout ── */
.layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 61px);
}

/* ── Sidebar ── */
aside {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 0;
}

nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 22px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.15s;
  cursor: pointer;
}

nav a:hover, nav a.active {
  color: var(--text);
  background: var(--surface2);
  border-left: 3px solid var(--accent);
  padding-left: 19px;
}

nav a svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ── Main content ── */
main { padding: 24px 28px; overflow-y: auto; }

.page { display: none; }
.page.active { display: block; }

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

.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
}

.stat-card .label {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-card .value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.stat-card .value.green { color: var(--green); }
.stat-card .value.red { color: var(--red); }

/* ── Section ── */
.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 20px;
  overflow: hidden;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.section-header h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

/* ── Table ── */
table {
  width: 100%;
  border-collapse: collapse;
}

th {
  text-align: left;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}

td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--surface2); }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}

.tag.buy { background: #1a3a2a; color: var(--green); }
.tag.sell { background: #3a1a1a; color: var(--red); }
.tag.paper { background: #2a2a1a; color: var(--warn); }
.tag.live { background: #1a2a3a; color: var(--accent); }

/* ── Buttons ── */
.btn {
  padding: 8px 18px;
  border-radius: 8px;
  border: none;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: #8077ff; }

.btn-danger {
  background: var(--danger);
  color: #fff;
}
.btn-danger:hover { background: #ff6b85; }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-sm { padding: 5px 12px; font-size: 12px; }

/* ── Bot control panel ── */
.control-panel {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  flex-wrap: wrap;
}

.paper-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.paper-toggle input { display: none; }

.toggle-track {
  width: 42px;
  height: 22px;
  border-radius: 11px;
  background: var(--border);
  position: relative;
  transition: background 0.2s;
}

.toggle-track::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  top: 3px;
  left: 3px;
  transition: transform 0.2s;
}

.paper-toggle input:checked + .toggle-track {
  background: var(--accent2);
}

.paper-toggle input:checked + .toggle-track::after {
  transform: translateX(20px);
}

/* ── Config form ── */
.config-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 20px;
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  font-weight: 600;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--accent);
}

.config-form .save-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* ── Logs ── */
.log-list {
  height: 320px;
  overflow-y: auto;
  font-family: 'Fira Mono', 'Cascadia Code', monospace;
  font-size: 12px;
  padding: 12px 16px;
}

.log-entry {
  padding: 3px 0;
  display: flex;
  gap: 10px;
}

.log-time { color: var(--muted); flex-shrink: 0; }
.log-level { font-weight: 700; flex-shrink: 0; width: 44px; }
.log-level.INFO { color: var(--accent2); }
.log-level.WARN { color: var(--warn); }
.log-level.ERROR { color: var(--red); }
.log-msg { color: var(--text); word-break: break-all; }

/* ── Empty state ── */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted);
}

/* ── Auth modal overlay ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 460px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  transform: translateY(16px);
  transition: transform 0.2s;
}

.modal-overlay.show .modal {
  transform: translateY(0);
}

.modal h2 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.modal .subtitle {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 24px;
}

.auth-step {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 14px;
}

.auth-step .step-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  margin-bottom: 8px;
}

.auth-step .step-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  word-break: break-all;
}

.code-display {
  font-family: 'Fira Mono', monospace;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
  text-align: center;
  padding: 8px 0;
}

.auth-waiting {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 13px;
  margin-top: 16px;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.auth-success {
  text-align: center;
  padding: 16px 0;
  color: var(--green);
  font-size: 15px;
  font-weight: 600;
}

.modal-actions {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

/* Login button in header */
.btn-login {
  background: linear-gradient(135deg, #6c63ff, #00d4aa);
  color: #fff;
  border: none;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-login:hover { opacity: 0.85; }

/* Auth warning banner */
.auth-banner {
  background: linear-gradient(135deg, rgba(108,99,255,0.15), rgba(0,212,170,0.1));
  border: 1px solid rgba(108,99,255,0.3);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

.auth-banner p {
  color: var(--text);
  font-size: 13px;
}

.auth-banner p span {
  color: var(--muted);
  display: block;
  font-size: 12px;
  margin-top: 2px;
}

/* ── Toast ── */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 13px;
  font-weight: 500;
  max-width: 320px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s;
  z-index: 999;
}

#toast.show { transform: translateY(0); opacity: 1; }
#toast.success { border-color: var(--green); color: var(--green); }
#toast.error { border-color: var(--red); color: var(--red); }
#toast.info { border-color: var(--accent); color: var(--accent); }

/* ── Responsive ── */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  aside { display: none; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr; }
  .config-form { grid-template-columns: 1fr; }
}