/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ===== SIDEBAR ===== */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0; top: 0; bottom: 0;
  z-index: 100;
  transition: width var(--transition), transform var(--transition);
  border-right: 1px solid rgba(255,255,255,0.05);
}

.sidebar.collapsed { width: 64px; }
.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .sidebar-footer span { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding: 12px; }
.sidebar.collapsed .logo { justify-content: center; }

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 32px; height: 32px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white;
  flex-shrink: 0;
}

.logo-icon svg { width: 18px; height: 18px; }

.logo-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  letter-spacing: -0.3px;
}

.sidebar-toggle {
  background: none; border: none; cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.sidebar-toggle:hover { color: white; background: rgba(255,255,255,0.1); }
.sidebar-toggle svg { width: 18px; height: 18px; }

.sidebar-nav {
  flex: 1;
  padding: 12px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #8b8fa8;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
  overflow: hidden;
}

.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

.nav-item:hover { color: white; background: rgba(255,255,255,0.08); }
.nav-item.active { color: white; background: linear-gradient(135deg, rgba(79,142,247,0.25), rgba(20,184,166,0.15)); }
.nav-item.active svg { color: var(--accent-blue); }

.sidebar-footer {
  padding: 16px 8px;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: #8b8fa8;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.theme-toggle:hover { color: white; background: rgba(255,255,255,0.08); }
.theme-toggle svg { width: 18px; height: 18px; flex-shrink: 0; }

/* ===== MAIN WRAPPER ===== */
.main-wrapper {
  flex: 1;
  margin-left: 240px;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.main-wrapper.sidebar-collapsed { margin-left: 64px; }

/* ===== TOPBAR ===== */
.topbar {
  height: 64px;
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}

.topbar-left { display: flex; align-items: center; gap: 16px; flex: 1; }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.mobile-menu-btn {
  display: none;
  background: none; border: none; cursor: pointer;
  color: var(--text-secondary);
  padding: 6px;
  border-radius: 8px;
}
.mobile-menu-btn svg { width: 22px; height: 22px; }

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  max-width: 360px;
  flex: 1;
  transition: border-color var(--transition);
}
.search-box:focus-within { border-color: var(--accent-blue); }
.search-box svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.search-box input {
  background: none; border: none; outline: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  width: 100%;
}
.search-box input::placeholder { color: var(--text-muted); }

.period-filter select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  padding: 7px 12px;
  font-size: 0.85rem;
  cursor: pointer;
  outline: none;
}

.alerts-btn {
  position: relative;
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.alerts-btn:hover { color: var(--text-primary); background: var(--bg-input); }
.alerts-btn svg { width: 20px; height: 20px; }
.alerts-btn .badge {
  position: absolute;
  top: 4px; right: 4px;
  background: var(--accent-red);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  width: 16px; height: 16px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.alerts-btn .badge[data-count="0"] { display: none; }

.user-avatar {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
  cursor: pointer;
}

/* ===== ALERTS PANEL ===== */
.alerts-panel {
  position: fixed;
  top: 64px; right: 16px;
  width: 320px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 200;
  overflow: hidden;
}
.alerts-panel.hidden { display: none; }
.alerts-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}
.alerts-header button { background: none; border: none; cursor: pointer; color: var(--text-secondary); }
.alerts-header button svg { width: 16px; height: 16px; }
.alerts-list { max-height: 320px; overflow-y: auto; }
.alert-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.85rem;
}
.alert-item:last-child { border-bottom: none; }
.alert-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; margin-top: 4px; }
.alert-dot.warning { background: var(--accent-orange); }
.alert-dot.info { background: var(--accent-blue); }
.alert-dot.success { background: var(--accent-green); }
.alert-dot.danger { background: var(--accent-red); }

/* ===== CONTENT ===== */
.content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.page { display: none; }
.page.active { display: block; animation: fadeIn 0.2s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.5px; }
.page-subtitle { color: var(--text-secondary); font-size: 0.875rem; margin-top: 2px; }

/* ===== CARDS ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover { box-shadow: var(--shadow); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.9rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.cards-grid.mini { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

.kpi-card {
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: default;
  min-width: 0;
}

.card-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.card-icon svg { width: 18px; height: 18px; }
.card-icon.green { background: rgba(34,197,94,0.15); color: var(--accent-green); }
.card-icon.blue { background: rgba(79,142,247,0.15); color: var(--accent-blue); }
.card-icon.red { background: rgba(239,68,68,0.15); color: var(--accent-red); }
.card-icon.purple { background: rgba(168,85,247,0.15); color: var(--accent-purple); }
.card-icon.orange { background: rgba(249,115,22,0.15); color: var(--accent-orange); }
.card-icon.teal { background: rgba(20,184,166,0.15); color: var(--accent-teal); }
.card-icon.yellow { background: rgba(234,179,8,0.15); color: var(--accent-yellow); }

.card-info { display: flex; flex-direction: column; gap: 4px; min-width: 0; flex: 1; }
.card-label { font-size: 0.75rem; color: var(--text-secondary); font-weight: 500; white-space: nowrap; }
.card-value { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.3px; word-break: break-all; line-height: 1.3; }
.card-delta { font-size: 0.75rem; font-weight: 500; }
.card-delta.positive { color: var(--accent-green); }
.card-delta.negative { color: var(--accent-red); }

/* ===== CHARTS ===== */
.charts-row {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.chart-card { padding: 0; overflow: hidden; }
.chart-card.large { grid-column: span 2; }
.chart-card canvas { padding: 16px; max-height: 260px; }

/* ===== TABLES ===== */
.table-wrapper { overflow-x: auto; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  padding: 12px 16px;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
  vertical-align: middle;
}

.data-table tbody tr:hover { background: var(--bg-card-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ===== BADGES ===== */
.badge-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 600;
}
.badge-tag.green { background: rgba(34,197,94,0.15); color: var(--accent-green); }
.badge-tag.red { background: rgba(239,68,68,0.15); color: var(--accent-red); }
.badge-tag.blue { background: rgba(79,142,247,0.15); color: var(--accent-blue); }
.badge-tag.orange { background: rgba(249,115,22,0.15); color: var(--accent-orange); }
.badge-tag.purple { background: rgba(168,85,247,0.15); color: var(--accent-purple); }
.badge-tag.teal { background: rgba(20,184,166,0.15); color: var(--accent-teal); }
.badge-tag.gray { background: rgba(139,143,168,0.15); color: var(--text-secondary); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--accent-blue); color: white; }
.btn-primary:hover { background: var(--accent-blue-dark); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--bg-card-hover); }
.btn-ghost { background: none; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-input); }
.btn-danger { background: rgba(239,68,68,0.15); color: var(--accent-red); border: 1px solid rgba(239,68,68,0.3); }
.btn-danger:hover { background: var(--accent-red); color: white; }
.btn-sm { padding: 6px 10px; font-size: 0.8rem; }
.btn-link { background: none; border: none; color: var(--accent-blue); font-size: 0.8rem; cursor: pointer; font-weight: 500; }
.btn-link:hover { text-decoration: underline; }
.btn-icon { padding: 6px; background: none; border: none; cursor: pointer; color: var(--text-secondary); border-radius: 6px; transition: all var(--transition); }
.btn-icon:hover { color: var(--text-primary); background: var(--bg-input); }
.btn-icon svg { width: 15px; height: 15px; }

/* ===== FORMS ===== */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid.cols3 { grid-template-columns: 1fr 1fr 1fr; }

input, select, textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent-blue); }
input::placeholder, textarea::placeholder { color: var(--text-muted); }
select option { background: var(--bg-card); }

.toggle-switch {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}
.toggle-switch input { display: none; }
.toggle-track {
  width: 40px; height: 22px;
  background: var(--border);
  border-radius: 11px;
  position: relative;
  transition: background var(--transition);
}
.toggle-track::after {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  background: white;
  border-radius: 50%;
  top: 3px; left: 3px;
  transition: transform var(--transition);
}
.toggle-switch input:checked + .toggle-track { background: var(--accent-blue); }
.toggle-switch input:checked + .toggle-track::after { transform: translateX(18px); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed; inset: 0;
  background: var(--overlay);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
  backdrop-filter: blur(4px);
}
.modal-overlay.hidden { display: none; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}

@keyframes slideUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.modal-header h2 { font-size: 1.1rem; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; color: var(--text-secondary); padding: 4px; border-radius: 6px; }
.modal-close:hover { color: var(--text-primary); background: var(--bg-input); }
.modal-close svg { width: 18px; height: 18px; }

.modal-body { padding: 24px; overflow-y: auto; display: flex; flex-direction: column; gap: 14px; }
.modal-footer {
  display: flex; align-items: center; justify-content: flex-end; gap: 10px;
  padding: 16px 24px;
  border-top: 1px solid var(--border);
}

/* ===== TOAST ===== */
.toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 2000;
}

.toast {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  font-size: 0.875rem;
  min-width: 240px;
  animation: slideInRight 0.3s ease;
}
.toast.success { border-left: 3px solid var(--accent-green); }
.toast.error { border-left: 3px solid var(--accent-red); }
.toast.info { border-left: 3px solid var(--accent-blue); }
.toast.warning { border-left: 3px solid var(--accent-orange); }
.toast svg { width: 16px; height: 16px; flex-shrink: 0; }
.toast.success svg { color: var(--accent-green); }
.toast.error svg { color: var(--accent-red); }
.toast.info svg { color: var(--accent-blue); }
.toast.warning svg { color: var(--accent-orange); }

@keyframes slideInRight { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ===== PROGRESS ===== */
.progress-section { padding: 16px 20px; }
.progress-bar-wrapper {
  height: 10px;
  background: var(--bg-input);
  border-radius: 5px;
  overflow: hidden;
  margin-bottom: 8px;
}
.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-teal));
  border-radius: 5px;
  transition: width 0.5s ease;
}
.progress-label { font-size: 0.85rem; color: var(--text-secondary); font-weight: 600; }

/* ===== CARTÃO CARDS ===== */
.cartao-card {
  padding: 20px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  min-width: 220px;
}
.cartao-card::before {
  content: '';
  position: absolute;
  top: -30px; right: -30px;
  width: 100px; height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cartao-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.cartao-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.cartao-name { font-weight: 700; font-size: 1rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px; }
.cartao-chip { width: 28px; height: 20px; background: rgba(255,255,255,0.2); border-radius: 4px; flex-shrink: 0; }
.cartao-limit-bar { margin: 12px 0 8px; }
.cartao-limit-info { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--text-secondary); gap: 8px; }
.cartao-limit-info span { white-space: nowrap; }
.cartao-actions { display: flex; gap: 6px; margin-top: 12px; flex-wrap: wrap; }

/* Total cartões card */
.cartao-total-card {
  padding: 20px;
  background: linear-gradient(135deg, rgba(79,142,247,0.15), rgba(20,184,166,0.1));
  border: 1px solid rgba(79,142,247,0.3) !important;
}

/* Cards grid para cartões — colunas maiores */
#cartoesGrid {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

/* ===== META CARDS ===== */
.metas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.meta-card { padding: 20px; }
.meta-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.meta-title { font-weight: 700; font-size: 1rem; }
.meta-values { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 8px; }
.meta-prazo { font-size: 0.78rem; color: var(--text-muted); margin-top: 8px; }

/* ===== CONFIG ===== */
.config-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 16px; }
.config-field { padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.config-actions { padding: 16px 20px; display: flex; flex-direction: column; gap: 10px; }
.tags-list { padding: 12px 16px; display: flex; flex-wrap: wrap; gap: 8px; min-height: 60px; }
.tag-item {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8rem;
}
.tag-item button { background: none; border: none; cursor: pointer; color: var(--text-muted); display: flex; }
.tag-item button:hover { color: var(--accent-red); }
.tag-item button svg { width: 12px; height: 12px; }

/* ===== FILTERS ===== */
.filters { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filters select, .filters input[type="month"] {
  padding: 6px 10px;
  font-size: 0.8rem;
  width: auto;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 48px 24px;
  color: var(--text-muted);
  gap: 12px;
}
.empty-state svg { width: 48px; height: 48px; opacity: 0.4; }
.empty-state p { font-size: 0.9rem; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .chart-card.large { grid-column: span 1; }
  .charts-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 240px !important;
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-wrapper { margin-left: 0 !important; }
  .mobile-menu-btn { display: flex; }
  .sidebar-toggle { display: none; }
  .charts-row { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid.cols3 { grid-template-columns: 1fr; }
  .content { padding: 16px; }
  .topbar { padding: 0 16px; }
  .search-box { max-width: 200px; }
}

@media (max-width: 480px) {
  .cards-grid { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; gap: 12px; }
}

/* ===== DESPESAS KPI ROW ===== */
.despesas-kpi-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}
@media (max-width: 900px) { .despesas-kpi-row { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .despesas-kpi-row { grid-template-columns: 1fr; } }

/* ===== CALCULADORA ===== */
.calc-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 52px; height: 52px;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-teal));
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 20px rgba(79,142,247,0.4);
  z-index: 500;
  transition: transform 0.2s, box-shadow 0.2s;
}
.calc-fab:hover { transform: scale(1.1); box-shadow: 0 6px 28px rgba(79,142,247,0.5); }
.calc-fab svg { width: 22px; height: 22px; color: white; }

.calc-panel {
  position: fixed;
  bottom: 92px;
  right: 28px;
  width: 280px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  z-index: 500;
  overflow: hidden;
  animation: slideUp 0.2s ease;
  display: none;
}
.calc-panel.open { display: block; }

.calc-display {
  background: var(--bg-primary);
  padding: 16px 16px 10px;
  text-align: right;
  border-bottom: 1px solid var(--border);
}
.calc-expr {
  font-size: 0.78rem;
  color: var(--text-muted);
  min-height: 18px;
  word-break: break-all;
}
.calc-result {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -1px;
  word-break: break-all;
  line-height: 1.2;
}

.calc-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
}
.calc-btn {
  padding: 16px 8px;
  border: none;
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  text-align: center;
}
.calc-btn:hover { background: var(--bg-card-hover); }
.calc-btn:active { background: var(--bg-input); }
.calc-btn.op { color: var(--accent-blue); }
.calc-btn.eq { background: var(--accent-blue); color: white; }
.calc-btn.eq:hover { background: var(--accent-blue-dark); }
.calc-btn.clear { color: var(--accent-red); }
.calc-btn.span2 { grid-column: span 2; }