/* ===== RESET & BASE ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0d0f14;
  --bg-card: #141820;
  --bg-card-hover: #1a2030;
  --bg-input: #1e2536;
  --border: #2a3347;
  --border-focus: #4a6fa5;
  --text: #e2e8f0;
  --text-muted: #64748b;
  --text-dim: #94a3b8;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --green: #22c55e;
  --green-dim: #16a34a;
  --red: #ef4444;
  --red-dim: #dc2626;
  --yellow: #f59e0b;
  --purple: #a855f7;
  --radius: 8px;
  --radius-sm: 4px;
  --shadow: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.5);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

button, input, select, textarea {
  font-family: var(--font);
  font-size: 1rem;
}

/* ===== UTILITIES ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
}

.positive { color: var(--green); }
.negative { color: var(--red); }
.muted { color: var(--text-muted); }
.dim { color: var(--text-dim); }
.mono { font-family: var(--font-mono); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.badge-green { background: rgba(34,197,94,0.15); color: var(--green); }
.badge-red { background: rgba(239,68,68,0.15); color: var(--red); }
.badge-yellow { background: rgba(245,158,11,0.15); color: var(--yellow); }
.badge-blue { background: rgba(59,130,246,0.15); color: var(--accent); }
.badge-purple { background: rgba(168,85,247,0.15); color: var(--purple); }
.badge-gray { background: rgba(100,116,139,0.15); color: var(--text-dim); }

/* ===== LAYOUT ===== */
.page-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== NAV ===== */
.topnav {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.topnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.topnav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}
.topnav-logo span { color: var(--accent); }
.topnav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.topnav-links a,
.topnav-links button {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.topnav-links a:hover,
.topnav-links button:hover {
  background: var(--bg-input);
  color: var(--text);
  text-decoration: none;
}
.topnav-links a.active {
  color: var(--text);
  background: var(--bg-input);
}
.topnav-user {
  font-size: 0.875rem;
  color: var(--text-dim);
}

/* ===== CARD ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}
.card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-body {
  padding: 1.25rem;
}

/* ===== STAT CARDS ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}
.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.stat-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.35rem;
}

/* ===== TABLE ===== */
.table-wrap {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
thead th {
  text-align: left;
  padding: 0.6rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(42,51,71,0.5);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg-card-hover); }
.td-mono { font-family: var(--font-mono); font-size: 0.8125rem; }

/* ===== FORMS ===== */
.form-group {
  margin-bottom: 1.1rem;
}
.form-group:last-child { margin-bottom: 0; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 0.4rem;
}
.form-input,
.form-select {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.15s;
  outline: none;
}
.form-input:focus,
.form-select:focus {
  border-color: var(--border-focus);
}
.form-input::placeholder { color: var(--text-muted); }
.form-hint {
  margin-top: 0.3rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 480px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
  white-space: nowrap;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }

.btn-secondary {
  background: var(--bg-input);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover:not(:disabled) { background: var(--bg-card-hover); }

.btn-danger {
  background: rgba(239,68,68,0.15);
  color: var(--red);
  border-color: rgba(239,68,68,0.3);
}
.btn-danger:hover:not(:disabled) { background: rgba(239,68,68,0.25); }

.btn-success {
  background: rgba(34,197,94,0.15);
  color: var(--green);
  border-color: rgba(34,197,94,0.3);
}
.btn-success:hover:not(:disabled) { background: rgba(34,197,94,0.25); }

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}
.btn-block { width: 100%; }
.btn-lg {
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
}

/* ===== ALERTS / MESSAGES ===== */
.msg {
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  display: none;
}
.msg.show { display: flex; align-items: flex-start; gap: 0.5rem; }
.msg-success { background: rgba(34,197,94,0.12); color: var(--green); border: 1px solid rgba(34,197,94,0.25); }
.msg-error { background: rgba(239,68,68,0.12); color: var(--red); border: 1px solid rgba(239,68,68,0.25); }
.msg-info { background: rgba(59,130,246,0.12); color: var(--accent); border: 1px solid rgba(59,130,246,0.25); }
.msg-warning { background: rgba(245,158,11,0.12); color: var(--yellow); border: 1px solid rgba(245,158,11,0.25); }

/* ===== TOGGLE SWITCH ===== */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}
.toggle input { display: none; }
.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  left: 3px;
  top: 3px;
  width: 16px;
  height: 16px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: transform 0.2s, background 0.2s;
}
.toggle input:checked + .toggle-slider { background: rgba(34,197,94,0.2); border-color: var(--green-dim); }
.toggle input:checked + .toggle-slider::before { transform: translateX(20px); background: var(--green); }
.toggle-label { font-size: 0.875rem; color: var(--text-dim); }

/* ===== LOADING ===== */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
  height: 1em;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ===== SECTION SPACING ===== */
.section { margin-bottom: 1.75rem; }
.section:last-child { margin-bottom: 0; }
.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ===== DASHBOARD GRID ===== */
.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.dash-grid .span-2 { grid-column: span 2; }
@media (max-width: 768px) {
  .dash-grid { grid-template-columns: 1fr; }
  .dash-grid .span-2 { grid-column: span 1; }
}

/* ===== POSITION ROWS ===== */
.position-row {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid rgba(42,51,71,0.5);
  gap: 1rem;
}
.position-row:last-child { border-bottom: none; }
.position-ticker {
  font-weight: 700;
  font-size: 0.9375rem;
  min-width: 60px;
  font-family: var(--font-mono);
}
.position-name { color: var(--text-dim); font-size: 0.8125rem; flex: 1; }
.position-qty { font-family: var(--font-mono); font-size: 0.8125rem; color: var(--text-dim); min-width: 70px; text-align: right; }
.position-value { font-family: var(--font-mono); font-size: 0.875rem; font-weight: 600; min-width: 90px; text-align: right; }
.position-pnl { font-family: var(--font-mono); font-size: 0.8125rem; min-width: 80px; text-align: right; }

/* ===== SIGNAL ROW ===== */
.signal-row {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid rgba(42,51,71,0.5);
}
.signal-row:last-child { border-bottom: none; }
.signal-top {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
  flex-wrap: wrap;
}
.signal-ticker {
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
}
.signal-tweet {
  font-size: 0.8125rem;
  color: var(--text-dim);
  line-height: 1.4;
}
.signal-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.4rem;
  flex-wrap: wrap;
}
.signal-time { font-size: 0.75rem; color: var(--text-muted); }

/* ===== EMPTY STATE ===== */
.empty-state {
  padding: 3rem 1.25rem;
  text-align: center;
  color: var(--text-muted);
}
.empty-state-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  opacity: 0.4;
}
.empty-state p { font-size: 0.875rem; }

/* ===== AUTH PAGE ===== */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}
.auth-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow-lg);
}
.auth-logo {
  font-size: 1.75rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.4rem;
  letter-spacing: -0.03em;
}
.auth-logo span { color: var(--accent); }
.auth-tagline {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 2rem;
}
.auth-divider { margin: 1.25rem 0; }

/* ===== LANDING PAGE ===== */
.hero {
  padding: 6rem 1.5rem 4rem;
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}
.hero-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}
.hero-title span { color: var(--accent); }
.hero-sub {
  font-size: 1.125rem;
  color: var(--text-dim);
  line-height: 1.65;
  margin-bottom: 2.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  padding: 2rem 0 4rem;
  max-width: 1200px;
  margin: 0 auto;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}
.feature-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.feature-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  line-height: 1.55;
}

/* ===== LEADERBOARD ===== */
.leaderboard-table .rank-col {
  width: 48px;
  text-align: center;
  font-weight: 700;
  color: var(--text-muted);
}
.rank-1 { color: #f59e0b; }
.rank-2 { color: #94a3b8; }
.rank-3 { color: #cd7c4e; }
.trader-name { font-weight: 600; }

/* ===== ONBOARDING ===== */
.onboarding-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}
.onboarding-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 480px;
  box-shadow: var(--shadow-lg);
}
.onboarding-steps {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  justify-content: center;
}
.step-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: background 0.2s;
}
.step-dot.active { background: var(--accent); }
.step-dot.done { background: var(--green); }
.onboarding-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
}
.onboarding-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 1.75rem;
  line-height: 1.55;
}

/* ===== SETTINGS PAGE ===== */
.settings-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.75rem;
  align-items: start;
}
@media (max-width: 700px) {
  .settings-layout { grid-template-columns: 1fr; }
}
.settings-nav {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.5rem;
  position: sticky;
  top: 70px;
}
.settings-nav a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}
.settings-nav a:hover { background: var(--bg-input); color: var(--text); }
.settings-nav a.active { background: var(--bg-input); color: var(--text); }
.settings-section {
  scroll-margin-top: 72px;
  margin-bottom: 1.5rem;
}

/* ===== TRADING MODE INDICATOR ===== */
.mode-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.mode-paper { background: rgba(245,158,11,0.15); color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.mode-live { background: rgba(239,68,68,0.15); color: var(--red); border: 1px solid rgba(239,68,68,0.3); }
.mode-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== RESPONSIVE HELPERS ===== */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .page-container { padding: 0 0.75rem; }
  .card-header { padding: 0.75rem; }
  .card-body { padding: 0.75rem; }
  thead th { padding: 0.5rem 0.5rem; font-size: 0.65rem; }
  tbody td { padding: 0.5rem 0.5rem; font-size: 0.75rem; }
  .filter-bar { flex-wrap: wrap; padding: 0.5rem 0.75rem; }
  .filter-input { font-size: 0.75rem; max-width: none !important; flex: 1; min-width: 80px; }
  .position-row { flex-wrap: wrap; padding: 0.5rem 0.75rem; gap: 0.5rem; }
  .dash-grid { grid-template-columns: 1fr; gap: 1rem; }
  .dash-grid .span-2 { grid-column: span 1; }
  .section { margin-bottom: 1rem; }
}
@media (max-width: 420px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .auth-card, .onboarding-card { padding: 1.75rem 1.25rem; }
  thead th { padding: 0.4rem 0.3rem; }
  tbody td { padding: 0.4rem 0.3rem; }
}

/* ===== FILTER BAR ===== */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.filter-input {
  padding: 0.4rem 0.6rem;
  font-size: 0.8125rem;
  width: auto;
}
.load-more-wrap {
  padding: 0.75rem 1.25rem;
  text-align: center;
  border-top: 1px solid var(--border);
}

/* ===== MISC ===== */
.page-header {
  padding: 1.5rem 0 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.page-title {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-main {
  padding-bottom: 3rem;
}
.hr { border: none; border-top: 1px solid var(--border); margin: 1.25rem 0; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.gap-sm { gap: 0.5rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }