/* =========================================
   INVESTMENT PORTFOLIO & NET WORTH TRACKER
   Premium Fintech Stylesheet v3.0
   ========================================= */

/* =========================================
   CSS VARIABLES
   ========================================= */
:root {
  --stocks: #3b82f6;
  --stocks-light: #93c5fd;
  --bonds: #10b981;
  --bonds-light: #6ee7b7;
  --realestate: #f59e0b;
  --realestate-light: #fcd34d;
  --cash: #8b5cf6;
  --cash-light: #c4b5fd;
  --positive: #10b981;
  --negative: #ef4444;
  --primary: #3b82f6;
  --primary-dark: #1e3a8a;
  --orange: #f59e0b;
  --purple: #8b5cf6;

  --grad-networth: linear-gradient(135deg, #3b82f6 0%, #1e3a8a 100%);
  --grad-stocks: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
  --grad-bonds: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --grad-realestate: linear-gradient(135deg, #f59e0b 0%, #ea580c 100%);
  --grad-cash: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  --grad-primary: linear-gradient(135deg, #3b82f6 0%, #1e3a8a 100%);

  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-input: #f8fafc;
  --bg-nav: #ffffff;
  --bg-sidebar: #f1f5f9;
  --bg-table-head: #f8fafc;
  --bg-table-row-hover: #f8fafc;
  --bg-empty: #f8fafc;
  --bg-modal-backdrop: rgba(0,0,0,0.6);

  --border-input: #e2e8f0;
  --border-card: #e2e8f0;
  --border-table: #e2e8f0;
  --border-nav: #e2e8f0;

  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-placeholder: #94a3b8;

  --shadow-card: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.12);
  --shadow-button: 0 4px 12px rgba(59,130,246,0.3);
  --shadow-nav: 0 2px 8px rgba(0,0,0,0.05);

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;

  --font-h1: 32px;
  --font-h2: 24px;
  --font-h3: 20px;
  --font-body: 15px;
  --font-small: 13px;
  --font-tiny: 11px;

  --transition-fast: 0.15s ease;
  --transition: 0.3s ease;
  --transition-slow: 0.4s ease;

  --radius-sm: 8px;
  --radius: 10px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  --max-width: 1280px;
  --nav-height: 64px;
}

[data-theme="dark"] {
  --bg-body: #0f172a;
  --bg-card: #1e293b;
  --bg-input: #1e293b;
  --bg-nav: #1e293b;
  --bg-sidebar: #0f172a;
  --bg-table-head: #1e293b;
  --bg-table-row-hover: #334155;
  --bg-empty: #1e293b;

  --border-input: #334155;
  --border-card: #334155;
  --border-table: #334155;
  --border-nav: #334155;

  --text-primary: #f8fafc;
  --text-secondary: #e2e8f0;
  --text-muted: #94a3b8;
  --text-placeholder: #64748b;

  --shadow-card: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.4);
}

/* =========================================
   BASE & RESET
   ========================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-body);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

/* =========================================
   PAGE ROUTING / SPA
   ========================================= */
.page { display: none; opacity: 0; transition: opacity 0.3s ease; }
.page.active { display: block; opacity: 1; }
.page.fade-in { animation: fadeIn 0.3s ease forwards; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* =========================================
   NAVIGATION
   ========================================= */
.top-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  border-bottom: 1px solid var(--border-nav);
  box-shadow: var(--shadow-nav);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
}
.nav-brand .logo-icon { font-size: 24px; }
.nav-links {
  display: flex;
  gap: var(--space-xs);
  list-style: none;
}
.nav-links a {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 14px;
  transition: all var(--transition-fast);
  position: relative;
}
.nav-links a:hover { color: var(--primary); background: var(--bg-body); }
.nav-links a.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 16px;
  right: 16px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}
.theme-toggle-nav {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
}
.theme-toggle-nav input { display: none; }
.toggle-track-nav {
  width: 48px;
  height: 26px;
  background: var(--border-input);
  border-radius: 13px;
  position: relative;
  transition: background var(--transition-fast);
}
.theme-toggle-nav input:checked + .toggle-track-nav { background: var(--primary); }
.toggle-thumb-nav {
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.theme-toggle-nav input:checked + .toggle-track-nav .toggle-thumb-nav { transform: translateX(22px); }

/* Mobile nav */
.hamburger { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-primary); }
.mobile-drawer {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 280px;
  background: var(--bg-card);
  z-index: 1100;
  transform: translateX(-100%);
  transition: transform var(--transition);
  padding: var(--space-lg);
  box-shadow: 4px 0 20px rgba(0,0,0,0.15);
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}
.mobile-drawer-overlay.open { opacity: 1; visibility: visible; }
.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-card);
}
.drawer-links { list-style: none; }
.drawer-links li { margin-bottom: var(--space-xs); }
.drawer-links a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: all var(--transition-fast);
}
.drawer-links a:hover, .drawer-links a.active {
  background: var(--bg-body);
  color: var(--primary);
}

/* =========================================
   MAIN LAYOUT
   ========================================= */
.main-content {
  padding-top: calc(var(--nav-height) + var(--space-lg));
  max-width: var(--max-width);
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
  padding-bottom: var(--space-2xl);
}

/* =========================================
   TYPOGRAPHY
   ========================================= */
.page-title { font-size: var(--font-h1); font-weight: 700; margin-bottom: var(--space-lg); color: var(--text-primary); }
.section-title { font-size: var(--font-h2); font-weight: 700; margin-bottom: var(--space-md); color: var(--text-primary); }
.card-title { font-size: var(--font-h3); font-weight: 600; margin-bottom: var(--space-sm); color: var(--text-primary); }
.label { font-size: var(--font-small); font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* =========================================
   BUTTONS
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: var(--shadow-button);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(59,130,246,0.4); }
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 1px solid var(--border-input);
}
.btn-secondary:hover { background: var(--bg-body); }
.btn-danger { background: var(--negative); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* =========================================
   CARDS
   ========================================= */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}
.card:hover { box-shadow: var(--shadow-card-hover); }

/* Summary / dashboard cards */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.summary-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.summary-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.summary-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.card-net-worth { grid-column: span 2; }
.card-net-worth::before { background: var(--grad-networth); }
.card-stocks::before { background: var(--grad-stocks); }
.card-bonds::before { background: var(--grad-bonds); }
.card-realestate::before { background: var(--grad-realestate); }
.card-cash::before { background: var(--grad-cash); }
.card-gainloss::before { background: var(--grad-primary); }
.card-return::before { background: var(--grad-bonds); }

.card-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-sm);
}
.card-label { font-size: var(--font-small); font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.card-icon { font-size: 24px; }
.card-value { font-size: 28px; font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-xs); }
.card-net-worth .card-value { font-size: 40px; }
.card-change { font-size: var(--font-small); font-weight: 600; }
.card-change.positive { color: var(--positive); }
.card-change.negative { color: var(--negative); }

/* =========================================
   ALLOCATION BAR
   ========================================= */
.allocation-bar-wrap {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.allocation-bar {
  display: flex;
  height: 32px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-md);
}
.allocation-segment { transition: width var(--transition-slow); }
.allocation-segment.stocks { background: var(--stocks); }
.allocation-segment.bonds { background: var(--bonds); }
.allocation-segment.realestate { background: var(--realestate); }
.allocation-segment.cash { background: var(--cash); }
.allocation-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.legend-item { display: flex; align-items: center; gap: var(--space-sm); font-size: var(--font-small); }
.legend-dot { width: 12px; height: 12px; border-radius: 3px; }

/* =========================================
   TOP PERFORMERS & ACTIVITY
   ========================================= */
.top-performers-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}
.performer-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  background: var(--bg-body);
  margin-bottom: var(--space-sm);
}
.performer-name { font-weight: 600; }
.performer-return { font-weight: 700; }
.performer-return.positive { color: var(--positive); }
.performer-return.negative { color: var(--negative); }

.activity-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-card);
}
.activity-item:last-child { border-bottom: none; }
.activity-icon { font-size: 20px; }
.activity-text { flex: 1; font-size: var(--font-small); color: var(--text-secondary); }
.activity-time { font-size: var(--font-tiny); color: var(--text-muted); }

/* Quick Actions */
.quick-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

/* =========================================
   PORTFOLIO LAYOUT
   ========================================= */
.portfolio-layout {
  display: flex;
  gap: var(--space-lg);
}
.portfolio-sidebar {
  width: 260px;
  flex-shrink: 0;
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  height: fit-content;
  position: sticky;
  top: calc(var(--nav-height) + var(--space-lg));
}
.sidebar-section { margin-bottom: var(--space-lg); }
.sidebar-section:last-child { margin-bottom: 0; }
.sidebar-title { font-size: var(--font-small); font-weight: 700; color: var(--text-muted); text-transform: uppercase; margin-bottom: var(--space-sm); }
.filter-list, .sort-list { list-style: none; }
.filter-list li, .sort-list li { margin-bottom: var(--space-xs); }
.filter-list button, .sort-list button {
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.filter-list button:hover, .filter-list button.active,
.sort-list button:hover, .sort-list button.active {
  background: var(--bg-body);
  color: var(--primary);
  font-weight: 600;
}

.portfolio-main { flex: 1; min-width: 0; }

/* Tabs */
.tab-nav {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: 2px solid var(--border-card);
}
.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
  background: var(--bg-body);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* =========================================
   TABLES
   ========================================= */
.data-table-wrap { overflow-x: auto; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.data-table thead th {
  background: var(--bg-table-head);
  color: var(--text-muted);
  font-size: var(--font-small);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 12px;
  text-align: left;
  border-bottom: 2px solid var(--border-table);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
}
.data-table thead th:hover { color: var(--primary); }
.data-table thead th .sort-indicator { margin-left: 4px; opacity: 0.5; }
.data-table tbody td {
  padding: 12px;
  border-bottom: 1px solid var(--border-table);
  color: var(--text-secondary);
  white-space: nowrap;
}
.data-table tbody tr { transition: background var(--transition-fast); }
.data-table tbody tr:hover { background: var(--bg-table-row-hover); }
.data-table .actions { display: flex; gap: var(--space-sm); }
.data-table .actions button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  font-size: 16px;
  transition: background var(--transition-fast);
}
.data-table .actions button:hover { background: var(--bg-body); }

.positive { color: var(--positive); }
.negative { color: var(--negative); }

.empty-state {
  text-align: center;
  padding: var(--space-2xl);
  color: var(--text-muted);
}
.empty-state-icon { font-size: 48px; margin-bottom: var(--space-md); }

/* =========================================
   FORMS
   ========================================= */
.form-group { margin-bottom: var(--space-md); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-md); }
.form-label {
  display: block;
  font-size: var(--font-small);
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-label .required { color: var(--negative); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  height: 44px;
  padding: 0 12px;
  border: 2px solid var(--border-input);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
}
.form-textarea { height: auto; min-height: 100px; padding: 12px; resize: vertical; }
.form-select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 32px; }
.checkbox-group { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.checkbox-item { display: flex; align-items: center; gap: var(--space-sm); cursor: pointer; font-size: 14px; }
.checkbox-item input { width: 18px; height: 18px; accent-color: var(--primary); cursor: pointer; }
.form-error { font-size: var(--font-small); color: var(--negative); margin-top: 4px; display: none; }
.form-error.visible { display: block; }

/* =========================================
   PROFILE SECTIONS
   ========================================= */
.profile-section {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}
.profile-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-card);
  cursor: pointer;
}
.profile-section-title { font-size: var(--font-h3); font-weight: 600; }
.section-toggle { font-size: 20px; transition: transform var(--transition-fast); }
.profile-section.collapsed .section-toggle { transform: rotate(-90deg); }
.profile-section.collapsed .section-body { display: none; }

.avatar-upload {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}
.avatar-preview {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-input);
}

.form-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-card);
}

/* =========================================
   SETTINGS
   ========================================= */
.settings-list { list-style: none; }
.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-card);
}
.settings-item:last-child { border-bottom: none; }
.settings-info { flex: 1; }
.settings-label { font-weight: 600; margin-bottom: 2px; }
.settings-desc { font-size: var(--font-small); color: var(--text-muted); }

/* Toggle switch */
.toggle-switch {
  position: relative;
  width: 48px;
  height: 26px;
  cursor: pointer;
}
.toggle-switch input { display: none; }
.toggle-switch-track {
  width: 100%;
  height: 100%;
  background: var(--border-input);
  border-radius: 13px;
  transition: background var(--transition-fast);
}
.toggle-switch input:checked + .toggle-switch-track { background: var(--primary); }
.toggle-switch-thumb {
  width: 22px;
  height: 22px;
  background: #fff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-switch-track + .toggle-switch-thumb { transform: translateX(22px); }

/* =========================================
   MODALS
   ========================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-modal-backdrop);
  z-index: 1200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal {
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  max-width: 600px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-xl);
  transform: scale(0.95);
  transition: transform var(--transition);
  position: relative;
}
.modal-overlay.open .modal { transform: scale(1); }
.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-muted);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background var(--transition-fast);
}
.modal-close:hover { background: var(--bg-body); color: var(--text-primary); }
.modal-title { font-size: var(--font-h2); font-weight: 700; margin-bottom: var(--space-lg); }
.modal-actions { display: flex; gap: var(--space-md); margin-top: var(--space-lg); }

/* Confirmation modal */
.confirm-modal .modal { max-width: 420px; text-align: center; }
.confirm-modal .modal-title { margin-bottom: var(--space-md); }
.confirm-modal p { color: var(--text-secondary); margin-bottom: var(--space-lg); }

/* =========================================
   TOAST NOTIFICATIONS
   ========================================= */
.toast-container {
  position: fixed;
  top: calc(var(--nav-height) + 16px);
  right: 16px;
  z-index: 1300;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.toast {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card-hover);
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 280px;
  max-width: 400px;
  animation: toastIn 0.3s ease;
  border-left: 4px solid var(--primary);
}
.toast.success { border-left-color: var(--positive); }
.toast.error { border-left-color: var(--negative); }
.toast.warning { border-left-color: var(--orange); }
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.toast-exit { animation: toastOut 0.3s ease forwards; }
@keyframes toastOut { from { transform: translateX(0); opacity: 1; } to { transform: translateX(100%); opacity: 0; } }

/* =========================================
   SNAPSHOTS
   ========================================= */
.snapshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-md);
}
.snapshot-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition-fast);
}
.snapshot-card:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.snapshot-date { font-weight: 600; margin-bottom: var(--space-xs); }
.snapshot-value { font-size: 18px; font-weight: 700; color: var(--primary); }
.snapshot-actions { display: flex; gap: var(--space-sm); margin-top: var(--space-sm); }

/* =========================================
   LOADING
   ========================================= */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.8);
  z-index: 1400;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}
[data-theme="dark"] .loading-overlay { background: rgba(15,23,42,0.8); }
.loading-overlay.active { opacity: 1; visibility: visible; }
.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--border-input);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =========================================
   COMING SOON CARDS
   ========================================= */
.coming-soon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}
.coming-soon-card {
  background: var(--bg-card);
  border: 2px dashed var(--border-input);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.coming-soon-card:hover { border-color: var(--primary); color: var(--text-secondary); }
.coming-soon-card .icon { font-size: 32px; margin-bottom: var(--space-sm); }
.coming-soon-card h4 { font-size: var(--font-h3); margin-bottom: var(--space-xs); }

/* =========================================
   INSIGHTS PAGE
   ========================================= */
.insights-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
.chart-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
}
.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}
.chart-filters { display: flex; gap: var(--space-sm); flex-wrap: wrap; }
.filter-btn {
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-input);
  background: var(--bg-body);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.metric-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: var(--space-lg);
  text-align: center;
  transition: all var(--transition-fast);
}
.metric-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.metric-label { font-size: var(--font-small); font-weight: 600; color: var(--text-muted); text-transform: uppercase; margin-bottom: var(--space-sm); }
.metric-value { font-size: 24px; font-weight: 700; color: var(--text-primary); }

/* Donut chart center text */
.donut-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}
.donut-center-label { font-size: var(--font-small); color: var(--text-muted); }
.donut-center-value { font-size: 24px; font-weight: 700; color: var(--text-primary); }

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
  .summary-grid { grid-template-columns: repeat(2, 1fr); }
  .card-net-worth { grid-column: span 2; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .coming-soon-grid { grid-template-columns: repeat(2, 1fr); }
  .top-performers-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .main-content { padding-left: var(--space-md); padding-right: var(--space-md); }
  .summary-grid { grid-template-columns: 1fr; }
  .card-net-worth { grid-column: span 1; }
  .portfolio-layout { flex-direction: column; }
  .portfolio-sidebar {
    width: 100%;
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
  }
  .sidebar-section { flex: 1; min-width: 140px; margin-bottom: 0; }
  .form-row { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: 1fr; }
  .coming-soon-grid { grid-template-columns: 1fr; }
  .tab-nav { overflow-x: auto; flex-wrap: nowrap; }
  .quick-actions { flex-direction: column; }
  .quick-actions .btn { width: 100%; }
  .page-title { font-size: 24px; }
  .card-value { font-size: 22px; }
  .card-net-worth .card-value { font-size: 28px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .portfolio-sidebar { width: 220px; }
}

/* =========================================
   UTILITIES
   ========================================= */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.w-full { width: 100%; }