/* =============================================
   DICOIN — App Page Styles
   ============================================= */

.app-layout {
  display: flex;
  min-height: 100vh;
  padding-top: 68px;
}

/* Sidebar */
.sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  position: fixed;
  top: 68px;
  bottom: 0;
  left: 0;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sidebar-section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  padding: 8px 12px 4px;
  font-weight: 700;
}
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.sidebar-link:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.sidebar-link.active {
  background: rgba(79,70,229,0.15);
  color: var(--indigo-light);
  border: 1px solid rgba(79,70,229,0.2);
}
.sidebar-icon { font-size: 1.1rem; width: 22px; text-align: center; flex-shrink: 0; }
.sidebar-bottom {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* Main content */
.app-main {
  flex: 1;
  margin-left: 260px;
  padding: 32px;
  max-width: calc(100vw - 260px);
}

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

/* Dashboard */
.dashboard-header { margin-bottom: 32px; }
.dashboard-header h2 { font-size: 1.75rem; }

/* Portfolio card */
.portfolio-card {
  background: linear-gradient(135deg, #0d1a30 0%, #0a1020 100%);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 36px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.portfolio-card::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 240px; height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,70,229,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.portfolio-total-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-weight: 700;
}
.portfolio-total {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin: 8px 0 4px;
}
.portfolio-change { font-size: 0.9rem; }
.portfolio-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* Asset list */
.assets-section h3 { margin-bottom: 16px; font-size: 1rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.08em; }
.asset-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 10px;
  transition: all var(--transition);
  cursor: pointer;
}
.asset-item:hover { border-color: var(--border-light); background: var(--bg-card-hover); }
.asset-info { flex: 1; }
.asset-name { font-weight: 700; }
.asset-full { font-size: 0.8rem; color: var(--text-muted); }
.asset-balance { text-align: right; }
.asset-amount { font-weight: 700; font-variant-numeric: tabular-nums; }
.asset-value { font-size: 0.85rem; color: var(--text-muted); }
.asset-actions { display: flex; gap: 8px; }

/* Quick stats row */
.stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-bottom: 24px; }
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.stat-card-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); font-weight: 700; }
.stat-card-value { font-size: 1.5rem; font-weight: 800; margin-top: 4px; }

/* Trade panel */
.trade-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.trade-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.trade-card h3 { margin-bottom: 20px; }
.coin-select-row {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}
.coin-select-btn {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.coin-select-btn.active {
  border-color: var(--indigo);
  background: rgba(79,70,229,0.1);
}
.coin-select-btn:hover { border-color: var(--border-light); }

.trade-result {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin: 16px 0;
  font-size: 0.9rem;
}
.trade-result-row { display: flex; justify-content: space-between; margin-bottom: 8px; }
.trade-result-row:last-child { margin-bottom: 0; }
.trade-balance-hint { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 6px; }

/* Send/Receive panel */
.send-recv-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.receive-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.qr-placeholder {
  width: 160px; height: 160px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin: 20px auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
}
.qr-icon { font-size: 3rem; }
.address-display {
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  color: var(--cyan-light);
  background: rgba(6,182,212,0.05);
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid rgba(6,182,212,0.15);
  word-break: break-all;
  text-align: center;
  cursor: pointer;
  transition: background var(--transition);
}
.address-display:hover { background: rgba(6,182,212,0.1); }

/* Transaction history */
.tx-list { display: flex; flex-direction: column; gap: 10px; }
.tx-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.tx-item:hover { border-color: var(--border-light); }
.tx-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.tx-icon.receive { background: rgba(16,185,129,0.15); }
.tx-icon.send { background: rgba(239,68,68,0.15); }
.tx-icon.buy { background: rgba(79,70,229,0.15); }
.tx-icon.sell { background: rgba(245,158,11,0.15); }
.tx-info { flex: 1; min-width: 0; }
.tx-label { font-weight: 600; font-size: 0.9rem; }
.tx-note { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx-amount { text-align: right; flex-shrink: 0; }
.tx-val { font-weight: 700; font-variant-numeric: tabular-nums; }
.tx-time { font-size: 0.75rem; color: var(--text-muted); }
.tx-empty { text-align: center; padding: 60px 20px; color: var(--text-muted); }

/* Market prices */
.market-table {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.market-table-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 16px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
}
.market-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  align-items: center;
  transition: background var(--transition);
}
.market-row:last-child { border-bottom: none; }
.market-row:hover { background: var(--bg-card-hover); }
.market-coin { display: flex; align-items: center; gap: 12px; }
.market-price { font-weight: 700; font-variant-numeric: tabular-nums; }
.market-change { font-weight: 600; }
.market-buy-btn { justify-self: end; }

/* Page header */
.page-header { margin-bottom: 28px; }
.page-header h2 { font-size: 1.5rem; }

/* Settings */
.settings-section { margin-bottom: 32px; }
.settings-section h3 { margin-bottom: 16px; color: var(--text-secondary); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.08em; }

/* Mobile */
@media (max-width: 900px) {
  .sidebar { display: none; }
  .app-main { margin-left: 0; max-width: 100vw; padding: 20px 16px; }
  .trade-panel, .send-recv-panel { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr; }
  .market-table-header, .market-row { grid-template-columns: 2fr 1fr 1fr; }
  .market-table-header > :last-child, .market-row > :last-child { display: none; }
}