/* ============================================================
   styles.css — StockSim dark theme
   ============================================================ */

:root {
  --bg-primary:     #0a0e1a;
  --bg-secondary:   #111827;
  --bg-card:        #1a2235;
  --bg-card-hover:  #1e2a3d;
  --accent:         #6c63ff;
  --accent-hover:   #5a52d5;
  --green:          #00d4a8;
  --red:            #ff4d6d;
  --yellow:         #f59e0b;
  --blue:           #38bdf8;
  --text-primary:   #e8eaf0;
  --text-secondary: #8892a4;
  --text-muted:     #4a5568;
  --border:         #1e2a3d;
  --border-light:   #2d3748;
  --sidebar-width:  240px;
  --radius:         12px;
  --radius-sm:      8px;
  --shadow:         0 4px 24px rgba(0,0,0,0.4);
  --shadow-sm:      0 2px 8px rgba(0,0,0,0.3);
  --transition:     0.2s ease;
}

/* ── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  line-height: 1.5;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, button { outline: none; }
img { max-width: 100%; }

/* ── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0; top: 0; bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}
.sidebar-logo span { color: var(--accent); }
.sidebar-logo p {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 20px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 0;
  transition: all var(--transition);
  cursor: pointer;
  border-left: 3px solid transparent;
  user-select: none;
}
.nav-item:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}
.nav-item.active {
  color: var(--accent);
  background: rgba(108, 99, 255, 0.1);
  border-left-color: var(--accent);
}
.nav-icon { font-size: 1.1rem; width: 20px; text-align: center; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.reset-btn {
  width: 100%;
  padding: 8px 12px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.8rem;
  transition: all var(--transition);
}
.reset-btn:hover {
  border-color: var(--red);
  color: var(--red);
  background: rgba(255, 77, 109, 0.08);
}

/* ── Main content ────────────────────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-height: 100vh;
  padding: 28px 32px;
  max-width: calc(100vw - var(--sidebar-width));
}

/* ── Page sections ───────────────────────────────────────────────────────── */
.page-section { display: none; }
.page-section.active { display: block; }

.page-header {
  margin-bottom: 24px;
}
.page-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.page-header p { color: var(--text-secondary); font-size: 0.85rem; margin-top: 4px; }

/* ── Cards ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  transition: border-color var(--transition);
}
.card:hover { border-color: var(--border-light); }
.card-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 600;
}

/* ── Stats row ───────────────────────────────────────────────────────────── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  opacity: 0.6;
}
.stat-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  transition: color var(--transition);
}
.stat-pct {
  font-size: 0.8rem;
  margin-top: 3px;
  font-weight: 500;
}
.stat-value.positive, .stat-pct.positive { color: var(--green); }
.stat-value.negative, .stat-pct.negative { color: var(--red); }
.positive { color: var(--green); }
.negative { color: var(--red); }

/* ── Dashboard grid ──────────────────────────────────────────────────────── */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: auto auto;
  gap: 20px;
}
.dashboard-main { grid-column: 1; }
.dashboard-side { grid-column: 2; display: flex; flex-direction: column; gap: 20px; }

/* ── Charts ──────────────────────────────────────────────────────────────── */
.chart-wrap {
  position: relative;
  width: 100%;
}
.chart-wrap canvas { display: block; }
.portfolio-chart-wrap { height: 220px; }
.allocation-chart-wrap { height: 220px; }

/* ── News feed ───────────────────────────────────────────────────────────── */
.news-feed {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 400px;
  overflow-y: auto;
}
.news-item {
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--border-light);
  transition: border-color var(--transition);
}
.news-item.news-positive { border-left-color: var(--green); }
.news-item.news-negative { border-left-color: var(--red); }
.news-item.news-neutral  { border-left-color: var(--yellow); }
.news-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 5px;
}
.news-ticker {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(108,99,255,0.12);
  padding: 1px 6px;
  border-radius: 4px;
}
.news-sentiment {
  font-size: 0.65rem;
  padding: 1px 6px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.news-sentiment-positive { background: rgba(0,212,168,0.15); color: var(--green); }
.news-sentiment-negative { background: rgba(255,77,109,0.15); color: var(--red); }
.news-sentiment-neutral  { background: rgba(245,158,11,0.15); color: var(--yellow); }
.news-time { font-size: 0.7rem; color: var(--text-muted); margin-left: auto; }
.news-headline { font-size: 0.82rem; color: var(--text-primary); line-height: 1.4; }
.news-impact { font-size: 0.75rem; font-weight: 600; margin-top: 4px; display: inline-block; }

/* ── Watchlist ───────────────────────────────────────────────────────────── */
.watchlist-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  margin-bottom: 8px;
}
.watchlist-item:hover { background: var(--bg-card-hover); border-color: var(--border-light); }
.watchlist-left { display: flex; flex-direction: column; gap: 2px; }
.watchlist-right { display: flex; flex-direction: column; align-items: flex-end; gap: 3px; }

/* ── Market grid ─────────────────────────────────────────────────────────── */
.market-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.market-search {
  flex: 1;
  min-width: 200px;
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition);
}
.market-search::placeholder { color: var(--text-muted); }
.market-search:focus { border-color: var(--accent); }

.sector-filters {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.sector-filter-btn {
  padding: 6px 12px;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.78rem;
  font-weight: 500;
  transition: all var(--transition);
}
.sector-filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.sector-filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.market-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px;
}

.stock-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.stock-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}
.stock-card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 10px; }
.stock-card-price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; }
.stock-card-meta { margin-bottom: 8px; }

.stock-ticker {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
}
.stock-name-small {
  font-size: 0.72rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}
.stock-price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.4s ease;
}

.price-badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 10px;
}
.price-badge.positive { background: rgba(0,212,168,0.15); color: var(--green); }
.price-badge.negative { background: rgba(255,77,109,0.15); color: var(--red); }

.watchlist-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
  padding: 2px;
  transition: color var(--transition);
}
.watchlist-btn:hover { color: var(--yellow); }
.watchlist-btn.watched { color: var(--yellow); }

/* ── Sparkline ───────────────────────────────────────────────────────────── */
.sparkline-wrap { width: 100%; height: 48px; overflow: hidden; }
.sparkline-wrap canvas { width: 100% !important; height: 48px !important; }

/* ── Sector badges ───────────────────────────────────────────────────────── */
.sector-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.sector-technology  { background: rgba(108,99,255,0.15); color: #a78bfa; }
.sector-healthcare  { background: rgba(52,211,153,0.15); color: #34d399; }
.sector-energy      { background: rgba(245,158,11,0.15); color: #f59e0b; }
.sector-finance     { background: rgba(56,189,248,0.15); color: #38bdf8; }
.sector-consumer    { background: rgba(251,146,60,0.15); color: #fb923c; }
.sector-industrial  { background: rgba(248,113,113,0.15); color: #f87171; }

/* ── Portfolio page ──────────────────────────────────────────────────────── */
.portfolio-header-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.port-stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.port-stat-label { font-size: 0.72rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 4px; }
.port-stat-val { font-size: 1.2rem; font-weight: 700; }

/* ── Tables ──────────────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
thead tr { background: var(--bg-secondary); }
thead th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-secondary);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
thead th.sort-header { cursor: pointer; user-select: none; }
thead th.sort-header:hover { color: var(--text-primary); }
tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-card-hover); }
tbody tr.position-row { cursor: pointer; }
td { padding: 12px 16px; vertical-align: middle; }
.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 40px !important;
  font-size: 0.9rem;
}

/* ── History page ────────────────────────────────────────────────────────── */
.history-controls {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.history-filter-btn {
  padding: 7px 14px;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  transition: all var(--transition);
}
.history-filter-btn:hover { border-color: var(--accent); color: var(--accent); }
.history-filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.type-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.type-buy  { background: rgba(0,212,168,0.15); color: var(--green); }
.type-sell { background: rgba(255,77,109,0.15); color: var(--red); }

/* ── Stats page ──────────────────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.stats-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stats-card-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}
.stats-card-value {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}
.stats-card-sub {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-top: 4px;
}
.stats-pair-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.trade-highlight {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
}
.trade-highlight-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.trade-highlight-ticker {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}
.trade-highlight-val {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 4px;
}

/* ── Modals ──────────────────────────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: 32px 16px;
  overflow-y: auto;
}
.modal-overlay.modal-open { display: flex; }

.modal-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  width: 100%;
  max-width: 720px;
  box-shadow: var(--shadow);
  position: relative;
  animation: modalIn 0.22s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: translateY(16px) scale(0.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 14px; right: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 1rem;
  transition: all var(--transition);
  z-index: 10;
}
.modal-close:hover { background: var(--bg-card-hover); color: var(--text-primary); }

/* Stock modal specific */
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}
.modal-title-group { flex: 1; }
.modal-ticker-large {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.modal-company-name { font-size: 0.85rem; color: var(--text-secondary); margin-top: 2px; }
.modal-price-group { text-align: right; }
.modal-price-display { font-size: 1.6rem; font-weight: 700; }
.modal-price-change { font-size: 0.85rem; font-weight: 500; margin-top: 3px; }
.modal-price-change.positive { color: var(--green); }
.modal-price-change.negative { color: var(--red); }

.modal-tabs {
  display: flex;
  gap: 4px;
  padding: 12px 24px 0;
  border-bottom: 1px solid var(--border);
}
.modal-tab-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition);
}
.modal-tab-btn:hover { color: var(--text-primary); }
.modal-tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }

.modal-body { padding: 20px 24px; }

/* Chart section */
.range-btns {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}
.range-btn {
  padding: 5px 10px;
  border: 1px solid var(--border-light);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  transition: all var(--transition);
}
.range-btn:hover { border-color: var(--accent); color: var(--accent); }
.range-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.stock-price-chart-wrap { height: 240px; margin-bottom: 20px; position: relative; }

/* Stats section */
.modal-key-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}
.key-stat {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.key-stat-label { font-size: 0.7rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.key-stat-val { font-size: 0.95rem; font-weight: 600; margin-top: 3px; }
.modal-description { font-size: 0.85rem; color: var(--text-secondary); line-height: 1.6; margin-top: 8px; }

/* Trade panel */
.trade-panel {
  border-top: 1px solid var(--border);
  padding-top: 18px;
  margin-top: 4px;
}
.trade-panel-title { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.7px; margin-bottom: 12px; }
.trade-input-row {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}
.trade-input {
  flex: 1;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.trade-input:focus { border-color: var(--accent); }
.trade-input::placeholder { color: var(--text-muted); }
.trade-btns { display: flex; gap: 8px; }
.btn-buy {
  flex: 1;
  padding: 10px 20px;
  background: rgba(0,212,168,0.15);
  border: 1px solid var(--green);
  border-radius: var(--radius-sm);
  color: var(--green);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-buy:hover { background: rgba(0,212,168,0.25); }
.btn-sell {
  flex: 1;
  padding: 10px 20px;
  background: rgba(255,77,109,0.12);
  border: 1px solid var(--red);
  border-radius: var(--radius-sm);
  color: var(--red);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-sell:hover { background: rgba(255,77,109,0.22); }

.trade-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 8px;
}
.trade-max-btns { display: flex; gap: 6px; }
.max-btn {
  padding: 3px 8px;
  border: 1px solid var(--border-light);
  border-radius: 4px;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.7rem;
  transition: all var(--transition);
}
.max-btn:hover { border-color: var(--accent); color: var(--accent); }

.pos-summary {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 12px;
}
.pos-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 3px 0;
  color: var(--text-secondary);
}
.pos-row .pos-value { color: var(--text-primary); font-weight: 600; }
.no-position { font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; }

/* Confirm modal */
.confirm-box {
  max-width: 420px;
  padding: 28px;
}
.confirm-box h3 { font-size: 1.1rem; margin-bottom: 10px; }
.confirm-box p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 22px; line-height: 1.5; }
.confirm-btns { display: flex; gap: 10px; justify-content: flex-end; }
.btn-primary {
  padding: 9px 20px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 0.88rem;
  font-weight: 600;
  transition: background var(--transition);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary {
  padding: 9px 20px;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  transition: all var(--transition);
}
.btn-secondary:hover { border-color: var(--text-secondary); color: var(--text-primary); }

/* ── Toast ───────────────────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  top: 20px; right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  font-size: 0.82rem;
  color: var(--text-primary);
  max-width: 360px;
  pointer-events: all;
  opacity: 0;
  transform: translateX(20px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast.toast-visible { opacity: 1; transform: translateX(0); }
.toast.toast-hide { opacity: 0; transform: translateX(20px); }
.toast-success { border-left: 3px solid var(--green); }
.toast-error   { border-left: 3px solid var(--red); }
.toast-warning { border-left: 3px solid var(--yellow); }
.toast-info    { border-left: 3px solid var(--accent); }
.toast-icon { font-size: 0.9rem; flex-shrink: 0; }
.toast-msg { flex: 1; line-height: 1.4; }
.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  padding: 0 0 0 4px;
  transition: color var(--transition);
  pointer-events: all;
}
.toast-close:hover { color: var(--text-primary); }

/* ── Pulse skeleton ─────────────────────────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.skeleton {
  background: var(--bg-card);
  border-radius: 4px;
  animation: pulse 1.5s ease infinite;
}

/* ── Utility ─────────────────────────────────────────────────────────────── */
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-8 { gap: 8px; }
.mt-16 { margin-top: 16px; }
.mt-20 { margin-top: 20px; }
.mb-16 { margin-bottom: 16px; }
.mb-20 { margin-bottom: 20px; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .dashboard-side { grid-column: 1; display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .main-content { padding: 20px 20px 80px; }
  .portfolio-header-stats { grid-template-columns: repeat(2, 1fr); }
  .modal-key-stats { grid-template-columns: repeat(2, 1fr); }
  .market-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}

@media (max-width: 768px) {
  :root { --sidebar-width: 0px; }

  .sidebar {
    width: 100%;
    height: 60px;
    top: auto; bottom: 0; left: 0; right: 0;
    flex-direction: row;
    border-right: none;
    border-top: 1px solid var(--border);
    overflow: hidden;
    z-index: 200;
  }
  .sidebar-logo, .sidebar-footer { display: none; }
  .sidebar-nav {
    display: flex;
    flex-direction: row;
    width: 100%;
    padding: 0;
  }
  .nav-item {
    flex: 1;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3px;
    padding: 8px 4px;
    font-size: 0.65rem;
    border-left: none;
    border-top: 3px solid transparent;
    text-align: center;
  }
  .nav-item.active { border-top-color: var(--accent); border-left-color: transparent; }
  .nav-icon { font-size: 1.2rem; width: auto; }

  .main-content { margin-left: 0; padding: 16px 16px 72px; max-width: 100vw; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .dashboard-side { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-pair-grid { grid-template-columns: 1fr; }
  .portfolio-header-stats { grid-template-columns: repeat(2, 1fr); }
  .modal-box { margin: 8px; max-width: calc(100vw - 16px); }
  .modal-key-stats { grid-template-columns: 1fr 1fr; }
  .trade-btns { flex-direction: column; }
  .stat-value { font-size: 1.2rem; }
}

@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .market-grid { grid-template-columns: 1fr 1fr; }
}