/* ==========================================================================
   StockHis Design System (Design-OS Architecture)
   - Zero-latency local system font stack (eliminates Google Fonts blocking)
   - High-contrast FinTech dark glassmorphism
   - Strict 8pt grid rhythm & tabular-nums for financial precision
   ========================================================================== */

:root {
  /* Surface & Canvas Hierarchy */
  --bg-canvas: #080b11;
  --bg-main: #080b11;
  --bg-sidebar: #0d121c;
  --glass-bg: rgba(18, 25, 42, 0.6);
  --glass-bg-hover: rgba(26, 36, 60, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.16);
  --glass-border-glow: rgba(56, 139, 253, 0.4);

  /* Typography Colors */
  --text-main: #f0f6fc;
  --text-secondary: #c9d1d9;
  --text-muted: #8b949e;
  --text-dark: #484f58;

  /* FinTech Semantic Colors */
  --color-up: #00e676;           /* Positive/Bullish Neon Green */
  --color-up-bg: rgba(0, 230, 118, 0.12);
  --color-up-border: rgba(0, 230, 118, 0.28);
  
  --color-down: #ff334b;         /* Negative/Bearish Crisp Coral Red */
  --color-down-bg: rgba(255, 51, 75, 0.12);
  --color-down-border: rgba(255, 51, 75, 0.28);

  --color-accent: #2f81f7;       /* Precision Electric Blue */
  --color-accent-hover: #388bfd;
  --color-accent-bg: rgba(47, 129, 247, 0.12);
  
  --color-warning: #f59e0b;      /* Amber / Manual Override Warning */
  --color-warning-bg: rgba(245, 158, 11, 0.12);

  /* Depth & Elevation */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-neon: 0 10px 30px -5px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.05);
  --shadow-glow: 0 0 20px rgba(47, 129, 247, 0.25);
  --shadow-glow-up: 0 0 16px rgba(0, 230, 118, 0.15);
  --shadow-glow-down: 0 0 16px rgba(255, 51, 75, 0.15);

  /* Typography Stack - Zero Network Blocking */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans", sans-serif;
  --font-title: var(--font-family);
  --font-body: var(--font-family);
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
}

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

body {
  background-color: var(--bg-canvas);
  background-image: 
    radial-gradient(ellipse 60% 40% at 15% 10%, rgba(47, 129, 247, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 85% 85%, rgba(147, 51, 234, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  height: 100vh;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Minimalist Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* Tabular Numbers for Accurate Financial Alignment */
.card-value,
.period-stats-grid .card-value,
table td,
.price-override-input,
.badge {
  font-variant-numeric: tabular-nums lining-nums;
}

/* App Container Layout */
.app-container {
  display: flex;
  height: 100vh;
  width: 100vw;
}

/* Sidebar Component */
.sidebar {
  width: 260px;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--glass-border);
  display: flex;
  flex-direction: column;
  padding: 28px 20px;
  z-index: 10;
  user-select: none;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 36px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #a855f7 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 4px 14px rgba(47, 129, 247, 0.4);
}

.logo-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
  background: linear-gradient(180deg, #ffffff 30%, #a0aec0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}

.sidebar-nav li {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 13.5px;
  color: var(--text-muted);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  position: relative;
}

.sidebar-nav li:hover {
  background-color: var(--glass-bg);
  color: var(--text-main);
  border-color: var(--glass-border);
}

.sidebar-nav li.active {
  background: linear-gradient(90deg, rgba(47, 129, 247, 0.16) 0%, rgba(47, 129, 247, 0.04) 100%);
  color: #ffffff;
  border: 1px solid var(--glass-border-glow);
  box-shadow: 0 2px 12px rgba(47, 129, 247, 0.15);
  font-weight: 600;
}

.sidebar-nav li.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18%;
  bottom: 18%;
  width: 3.5px;
  background-color: var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  box-shadow: 0 0 8px var(--color-accent);
}

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid var(--glass-border);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.status-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-dark);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.status-value {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Main Content Area */
.main-content {
  flex: 1;
  padding: 32px 36px;
  overflow-y: auto;
  height: 100%;
}

.panel {
  display: none;
  animation: panelFadeIn 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.panel.active {
  display: block;
}

@keyframes panelFadeIn {
  from { 
    opacity: 0; 
    transform: translateY(6px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}

/* Common Header Styles */
.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}

.panel-title {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 26px;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

/* Dashboard Metric Cards System (Design-OS Tokenized) */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 28px;
}

.glass-card {
  background-color: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-neon);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  position: relative;
  overflow: hidden;
}

.glass-card:hover {
  transform: translateY(-2px);
  border-color: var(--glass-border-hover);
  box-shadow: 0 14px 40px -10px rgba(0, 0, 0, 0.6), 0 0 1px 1px rgba(255, 255, 255, 0.08);
}

.card-title {
  font-size: 11.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 12px;
  font-weight: 600;
}

.card-value {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 6px;
  color: #ffffff;
}

.card-subtext {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Visualizations Section */
.charts-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 20px;
  margin-bottom: 28px;
}

.chart-card {
  min-height: 380px;
  display: flex;
  flex-direction: column;
}

.chart-container {
  flex: 1;
  position: relative;
  width: 100%;
  height: 100%;
}

.chart-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-style: italic;
  font-size: 13px;
}

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

/* Directional FinTech Highlights */
.up {
  color: var(--color-up) !important;
}

.down {
  color: var(--color-down) !important;
}

/* Button & Action System */
.btn {
  background-color: var(--color-accent);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  user-select: none;
}

.btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
}

.btn:active {
  transform: scale(0.98);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: var(--glass-border-hover);
  box-shadow: none;
  transform: translateY(-1px);
}

.btn-icon {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.06);
}

/* Filter Controls System */
.filter-row {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filter-input-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--glass-border);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.filter-input-group:focus-within {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px rgba(47, 129, 247, 0.2);
}

.filter-input-group label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.filter-input-group input,
.filter-input-group select {
  background: transparent;
  border: none;
  color: #ffffff;
  outline: none;
  font-family: var(--font-body);
  font-size: 13px;
}

/* FinTech Table System */
.table-container {
  overflow-x: auto;
  margin-top: 15px;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: rgba(13, 18, 28, 0.7);
  color: var(--text-muted);
  font-weight: 600;
  padding: 14px 16px;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  border-bottom: 1px solid var(--glass-border);
  white-space: nowrap;
}

td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  font-size: 13.5px;
  color: var(--text-secondary);
  vertical-align: middle;
}

tr:hover td {
  background-color: rgba(255, 255, 255, 0.03);
  color: #ffffff;
}

.stock-name-cell {
  display: flex;
  flex-direction: column;
}

.stock-name {
  font-weight: 600;
  color: #ffffff;
  font-size: 14px;
}

.stock-code {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* Badge Capsules */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

.type-buy {
  background-color: var(--color-up-bg);
  color: var(--color-up);
  border: 1px solid var(--color-up-border);
}

.type-sell {
  background-color: var(--color-down-bg);
  color: var(--color-down);
  border: 1px solid var(--color-down-border);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  padding: 48px !important;
  font-size: 13.5px;
}

.notes-cell {
  max-width: 150px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-muted);
}

.table-actions {
  display: flex;
  gap: 8px;
}

.table-actions button {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 11.5px;
  font-weight: 500;
  transition: all 0.2s ease;
}

.table-actions .edit-btn:hover {
  background-color: var(--color-accent-bg);
  border-color: var(--color-accent);
  color: var(--color-accent-hover);
}

.table-actions .delete-btn:hover {
  background-color: var(--color-down-bg);
  border-color: var(--color-down);
  color: var(--color-down);
}

/* Price Override Controls */
.price-input-cell {
  display: flex;
  align-items: center;
  gap: 6px;
}

.price-override-input {
  background: transparent;
  border: 1px solid transparent;
  color: #ffffff;
  width: 96px;
  font-size: 13.5px;
  font-family: var(--font-body);
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: all 0.2s ease;
}

.price-override-input:hover,
.price-override-input:focus {
  border-color: var(--glass-border-glow);
  background-color: rgba(0, 0, 0, 0.35);
}

.price-override-input.price-manual {
  color: var(--color-warning);
  border-bottom: 1px dashed var(--color-warning);
}

.clear-override-btn {
  background: transparent;
  border: none;
  color: var(--text-dark);
  font-size: 15px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: color 0.2s ease;
}

.clear-override-btn:hover {
  color: var(--color-down);
}

/* Modal Overlay & Card System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(4, 7, 14, 0.82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  width: 520px;
  max-width: 92%;
  background-color: var(--bg-sidebar);
  border: 1px solid var(--glass-border-hover);
  box-shadow: 0 24px 64px -12px rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: scale(0.96) translateY(8px);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0);
}

.modal-header {
  padding: 20px 26px;
  border-bottom: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-family: var(--font-title);
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.close-btn:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.08);
}

.modal-body {
  padding: 26px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  background-color: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  color: #ffffff;
  font-family: var(--font-body);
  font-size: 13.5px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(47, 129, 247, 0.25);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 24px;
}

/* Settings Options System */
.settings-section {
  margin-bottom: 32px;
}

.settings-section h3 {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  color: #ffffff;
}

.settings-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background-color: rgba(18, 25, 42, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: border-color 0.2s ease;
}

.settings-card:hover {
  border-color: var(--glass-border-hover);
}

.settings-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.settings-title {
  font-weight: 600;
  color: #ffffff;
}

.settings-desc {
  font-size: 12.5px;
  color: var(--text-muted);
}

.settings-actions {
  display: flex;
  gap: 10px;
}

.hidden-file-input {
  display: none;
}

/* Responsive Adaptive Breakpoints */
@media (max-width: 1200px) {
  .summary-grid,
  .period-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    padding: 16px;
    border-right: none;
    border-bottom: 1px solid var(--glass-border);
  }
  .main-content {
    padding: 20px;
  }
  .summary-grid,
  .period-stats-grid {
    grid-template-columns: 1fr;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .form-group.full-width {
    grid-column: span 1;
  }
}