/**
 * DREAMBIG QUANTITATIVE TRADING PLATFORM — ATLAS 2.0 DESIGN SYSTEM
 * Institutional Financial Architecture (TradingView / Linear / Hyperliquid Benchmark)
 * Zero AI Slop. Zero Neon Glow. Zero Cartesian Clutter.
 * Strictly WCAG 2.2 AA Compliant.
 */

:root {
  /* Surface & Canvas Hierarchy */
  --color-canvas: #0B0F14;
  --color-sidebar: #0E131A;
  --color-panel: #151C25;
  --color-panel-raised: #1B2530;
  --color-border: #293542;
  --color-border-subtle: rgba(255, 255, 255, 0.07);
  --color-border-focus: #66D6C1;

  /* Typographic Contrast (WCAG 2.2 AA Verified) */
  --color-text-primary: #EDF2F7;
  --color-text-muted: #9CABBB;
  --color-text-dim: #6B7D90;

  /* Institutional Accent & Status Accents */
  --color-accent: #66D6C1;
  --color-accent-subtle: rgba(102, 214, 193, 0.12);
  --color-positive: #67D6A4;
  --color-positive-subtle: rgba(103, 214, 164, 0.12);
  --color-negative: #F28B90;
  --color-negative-subtle: rgba(242, 139, 144, 0.12);
  --color-warning: #E6B770;
  --color-warning-subtle: rgba(230, 183, 112, 0.12);

  /* Typography Stack */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Geist Mono', 'SF Mono', monospace;

  /* Modular Spacing Scale (4px Base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;

  /* Radii & Depth */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-panel: 0 4px 16px rgba(0, 0, 0, 0.35);
  --shadow-dropdown: 0 12px 32px rgba(0, 0, 0, 0.55);

  /* Layout Constants */
  --header-height: 54px;
  --sidebar-width: 230px;
}

/* Global Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  background-color: var(--color-canvas);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Refinement */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-canvas);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-sm);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-dim);
}

/* Focus States (WCAG AA) */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* App Shell Structure */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Top Command Bar */
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--space-4);
  background-color: var(--color-sidebar);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand-section {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--color-text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
}

.brand-title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--color-text-primary);
}

.brand-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-accent-subtle);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.asset-select {
  background-color: var(--color-panel-raised);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: border-color 150ms ease;
}
.asset-select:hover {
  border-color: var(--color-accent);
}

.status-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  font-size: 12px;
  font-weight: 600;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-positive);
}
.status-dot.stale {
  background-color: var(--color-warning);
}
.status-dot.offline {
  background-color: var(--color-negative);
}

.auth-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-panel-raised);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 150ms ease, border-color 150ms ease;
}
.auth-btn:hover {
  background-color: var(--color-panel);
  border-color: var(--color-accent);
}

/* App Body with Sidebar & Content */
.app-body {
  display: flex;
  flex: 1;
}

/* Sidebar Navigation */
.app-sidebar {
  width: var(--sidebar-width);
  background-color: var(--color-sidebar);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-4) 0;
  flex-shrink: 0;
}

.nav-category {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: var(--space-3) var(--space-4) var(--space-1);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 9px var(--space-4);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: color 150ms ease, background-color 150ms ease;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  color: var(--color-text-primary);
  background-color: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
  color: var(--color-text-primary);
  background-color: var(--color-panel);
  border-left-color: var(--color-accent);
  font-weight: 600;
}

.nav-icon {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Main Content Surface */
.main-content {
  flex: 1;
  padding: var(--space-5);
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

/* Views Management */
.view-panel {
  display: none;
}
.view-panel.active {
  display: block;
}

/* Page Header */
.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.view-title-group h1 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.2px;
  color: var(--color-text-primary);
}
.view-title-group p {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* KPI Metric Ribbon */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.kpi-card {
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  transition: border-color 150ms ease;
}
.kpi-card:hover {
  border-color: rgba(102, 214, 193, 0.35);
}

.kpi-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-2);
}

.kpi-value {
  font-size: 26px;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-text-primary);
  line-height: 1.2;
}

.kpi-subtext {
  font-size: 12px;
  color: var(--color-text-dim);
  margin-top: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 12-Column Responsive Workspace Grid */
.workspace-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

/* Surface Panel */
.panel {
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  position: relative;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-subtle);
}

.panel-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-primary);
}

/* Candlestick Chart Surface */
.chart-container-box {
  position: relative;
  width: 100%;
  height: 480px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.chart-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.tf-btn {
  background-color: var(--color-panel-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 150ms ease;
}
.tf-btn:hover {
  color: var(--color-text-primary);
  border-color: var(--color-accent);
}
.tf-btn.active {
  background-color: var(--color-accent);
  color: #0B0F14;
  border-color: var(--color-accent);
}

/* Outage Banner for Missing Chart Data */
.chart-outage-banner {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(11, 15, 20, 0.88);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-3);
  z-index: 20;
  padding: var(--space-4);
  text-align: center;
}
.chart-outage-banner.active {
  display: flex;
}
.outage-badge {
  background-color: var(--color-warning-subtle);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

/* Order Execution Ticket */
.order-ticket {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.side-toggle {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.btn-side {
  padding: 9px;
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-panel-raised);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 150ms ease;
}
.btn-side.buy.active {
  background-color: var(--color-positive);
  color: #0B0F14;
  border-color: var(--color-positive);
}
.btn-side.sell.active {
  background-color: var(--color-negative);
  color: #0B0F14;
  border-color: var(--color-negative);
}

.ticket-input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.ticket-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
}
.ticket-input {
  background-color: var(--color-panel-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  font-size: 14px;
  font-family: var(--font-mono);
}
.ticket-input:focus {
  border-color: var(--color-accent);
}

.chips-row {
  display: flex;
  gap: var(--space-1);
}
.chip-btn {
  flex: 1;
  background-color: var(--color-panel-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 4px;
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.chip-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.btn-submit-order {
  padding: 11px;
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  background-color: var(--color-positive);
  color: #0B0F14;
  cursor: pointer;
  margin-top: var(--space-2);
  transition: opacity 150ms ease;
}
.btn-submit-order:hover {
  opacity: 0.92;
}

/* Institutional Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.pro-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.pro-table th {
  padding: 10px 12px;
  background-color: var(--color-panel-raised);
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--color-border);
}

.pro-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-subtle);
  color: var(--color-text-primary);
}

.pro-table tr:hover td {
  background-color: rgba(255, 255, 255, 0.02);
}

.mono-num {
  font-family: var(--font-mono);
}

/* Modal Dialog Overlays */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(11, 15, 20, 0.75);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}
.modal-overlay.active {
  display: flex;
}

.modal-card {
  background-color: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  width: 100%;
  max-width: 440px;
  box-shadow: var(--shadow-dropdown);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}
.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-primary);
}
.btn-close-modal {
  background: transparent;
  border: none;
  color: var(--color-text-dim);
  font-size: 20px;
  cursor: pointer;
}
.btn-close-modal:hover {
  color: var(--color-text-primary);
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.toast {
  background-color: var(--color-panel-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  font-size: 13px;
  box-shadow: var(--shadow-dropdown);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.toast.success { border-left: 4px solid var(--color-positive); }
.toast.error { border-left: 4px solid var(--color-negative); }
.toast.info { border-left: 4px solid var(--color-accent); }

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .app-sidebar {
    position: fixed;
    top: var(--header-height);
    left: -100%;
    bottom: 0;
    width: 260px;
    z-index: 500;
    transition: left 200ms ease;
    box-shadow: var(--shadow-dropdown);
  }
  .app-sidebar.open {
    left: 0;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-content {
    padding: var(--space-3);
  }
  .header-bar {
    padding: 0 var(--space-3);
  }
  .kpi-grid {
    grid-template-columns: 1fr;
  }
  .chart-container-box {
    height: 380px;
  }
}

@media (max-width: 390px) {
  html, body {
    font-size: 13px;
  }
  .brand-badge {
    display: none;
  }
  .asset-select {
    max-width: 130px;
    font-size: 11px;
    padding: 4px 6px;
  }
  .chart-container-box {
    height: 320px;
  }
}