/* ============================================================
   PayEdgePro — style.css
   Dark-first fintech dashboard, Syne + DM Sans typography
   ============================================================ */

/* ── CSS Variables ── */
:root {
  --bg-base:        #0d1117;
  --bg-surface:     #161b22;
  --bg-elevated:    #1c2333;
  --bg-hover:       #21293a;
  --border:         rgba(255,255,255,0.07);
  --border-strong:  rgba(255,255,255,0.14);

  --text-primary:   #e6edf3;
  --text-secondary: #8b949e;
  --text-muted:     #484f58;

  --accent:         #3fb950;
  --accent-dim:     rgba(63,185,80,0.15);
  --accent-hover:   #56d364;

  --blue:           #58a6ff;
  --blue-dim:       rgba(88,166,255,0.15);
  --red:            #f85149;
  --red-dim:        rgba(248,81,73,0.15);
  --orange:         #e3b341;
  --orange-dim:     rgba(227,179,65,0.15);
  --purple:         #bc8cff;
  --purple-dim:     rgba(188,140,255,0.15);

  --sidebar-w:      240px;
  --topbar-h:       64px;
  --radius:         10px;
  --radius-sm:      6px;
  --radius-lg:      16px;

  --shadow:         0 2px 12px rgba(0,0,0,0.4);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.5);

  --font-display:   'Syne', sans-serif;
  --font-body:      'DM Sans', sans-serif;
  --font-mono:      'DM Mono', monospace;

  --transition:     0.18s ease;
}

[data-theme="light"] {
  --bg-base:        #f4f6f9;
  --bg-surface:     #ffffff;
  --bg-elevated:    #f0f2f5;
  --bg-hover:       #e8ebf0;
  --border:         rgba(0,0,0,0.08);
  --border-strong:  rgba(0,0,0,0.15);

  --text-primary:   #1a1f2e;
  --text-secondary: #5a6478;
  --text-muted:     #9aa0b4;

  --shadow:         0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg:      0 8px 32px rgba(0,0,0,0.12);
}

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

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 99px; }

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

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.25rem;
  border-bottom: 1px solid var(--border);
  min-height: var(--topbar-h);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.logo-icon { font-size: 1.4rem; color: var(--accent); }
.logo-accent { color: var(--accent); }

.sidebar-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 4px;
}
.sidebar-toggle span {
  width: 18px; height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  display: block;
  transition: var(--transition);
}

.sidebar-nav {
  flex: 1;
  padding: 1rem 0.75rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-section-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0.75rem 0.5rem 0.35rem;
  margin-top: 0.25rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 600;
}
.nav-icon { font-size: 1rem; width: 1.1rem; text-align: center; }

.sidebar-footer {
  padding: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: background var(--transition);
}
.theme-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }
.theme-icon { font-size: 1rem; }

.sidebar-plan-badge {
  text-align: center;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 0.3rem;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ── Topbar ── */
.topbar {
  height: var(--topbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 50;
  gap: 1rem;
}
.topbar-left { display: flex; align-items: center; gap: 1rem; }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }

.mobile-menu-btn { display: none; font-size: 1.25rem; padding: 0.25rem; color: var(--text-secondary); }

.page-title-wrap { display: flex; flex-direction: column; gap: 1px; }
.page-title { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; }
.page-date { font-size: 0.75rem; color: var(--text-muted); font-family: var(--font-mono); }

.search-wrap { position: relative; }
.search-input {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem 0.45rem 2rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  width: 200px;
  transition: border-color var(--transition), width var(--transition);
}
.search-input:focus { outline: none; border-color: var(--accent); width: 240px; }
.search-icon { position: absolute; left: 0.6rem; top: 50%; transform: translateY(-50%); color: var(--text-muted); pointer-events: none; }

.avatar {
  width: 34px; height: 34px;
  background: linear-gradient(135deg, var(--accent), var(--blue));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

/* ============================================================
   PAGES
   ============================================================ */
.pages-container {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

.page { display: none; }
.page.active { display: block; animation: fadeIn 0.22s ease; }

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

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.1rem;
}
.card-header h3 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
}
.card-link { font-size: 0.8rem; color: var(--accent); }
.card-link:hover { text-decoration: underline; }

/* ============================================================
   STAT CARDS
   ============================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }

.stat-revenue::before { background: var(--accent); }
.stat-expenses::before { background: var(--red); }
.stat-profit::before { background: var(--blue); }
.stat-invoices::before { background: var(--orange); }

.stat-label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.07em; margin-bottom: 0.4rem; }
.stat-value { font-family: var(--font-display); font-size: 1.75rem; font-weight: 800; letter-spacing: -0.03em; }
.stat-change { font-size: 0.75rem; margin-top: 0.3rem; color: var(--text-muted); }
.stat-change.positive { color: var(--accent); }
.stat-change.negative { color: var(--red); }

/* ============================================================
   DASHBOARD GRIDS
   ============================================================ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}
.dashboard-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.chart-card { min-height: 320px; }

.period-btn {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.period-btn.active,
.period-btn:hover { background: var(--accent); color: #000; border-color: var(--accent); }
.chart-period-btns { display: flex; gap: 0.35rem; }

/* Activity List */
.activity-list, .due-list { display: flex; flex-direction: column; gap: 0; }
.activity-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.85rem;
}
.activity-item:last-child { border-bottom: none; }
.activity-desc { color: var(--text-primary); }
.activity-meta { color: var(--text-muted); font-size: 0.75rem; }
.activity-amount { font-family: var(--font-mono); font-weight: 500; }
.activity-empty { color: var(--text-muted); font-size: 0.85rem; padding: 0.75rem 0; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  font-family: var(--font-body);
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #0d1117; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }
.btn-outline {
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  background: transparent;
}
.btn-outline:hover { background: var(--bg-hover); border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }
.btn-danger { background: var(--red-dim); color: var(--red); border: 1px solid var(--red); }
.btn-danger:hover { background: var(--red); color: #fff; }
.w-full { width: 100%; }

/* ============================================================
   TOOLBAR
   ============================================================ */
.page-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.toolbar-left { display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }

.filter-input, .filter-select {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.85rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
}
.filter-input:focus, .filter-select:focus { outline: none; border-color: var(--accent); }
.filter-select option { background: var(--bg-surface); }

/* ============================================================
   TABLES
   ============================================================ */
.table-card { padding: 0; overflow: hidden; }
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
.data-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-hover); }
.data-table td:first-child, .data-table th:first-child { padding-left: 1.25rem; }

.empty-row { text-align: center; color: var(--text-muted); padding: 2rem !important; }

.action-btns { display: flex; gap: 0.4rem; align-items: center; }

/* Status badges */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.badge-paid    { background: var(--accent-dim); color: var(--accent); }
.badge-sent    { background: var(--blue-dim); color: var(--blue); }
.badge-draft   { background: var(--border); color: var(--text-muted); }
.badge-overdue { background: var(--red-dim); color: var(--red); }
.badge-pending { background: var(--orange-dim); color: var(--orange); }
.badge-partial { background: var(--purple-dim); color: var(--purple); }

/* ============================================================
   MONTHLY SUMMARY BAR
   ============================================================ */
.monthly-summary-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.monthly-summary-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.6rem 1rem;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.monthly-summary-item strong { font-family: var(--font-mono); color: var(--text-primary); }

/* ============================================================
   DEBT TRACKER
   ============================================================ */
.debt-tabs { display: flex; gap: 0.35rem; }
.debt-tab {
  padding: 0.45rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}
.debt-tab.active { background: var(--accent); color: #000; border-color: var(--accent); }
.debt-tab:hover:not(.active) { border-color: var(--accent); color: var(--accent); }

.debt-summary-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}
.debt-summary-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
}
.debt-summary-item.positive { border-color: var(--accent); }
.debt-summary-item.negative { border-color: var(--red); }
.debt-summary-item.net { border-color: var(--blue); }
.ds-label { display: block; font-size: 0.75rem; color: var(--text-muted); margin-bottom: 0.3rem; text-transform: uppercase; letter-spacing: 0.06em; }
.ds-value { font-family: var(--font-display); font-size: 1.5rem; font-weight: 800; }
.debt-summary-item.positive .ds-value { color: var(--accent); }
.debt-summary-item.negative .ds-value { color: var(--red); }
.debt-summary-item.net .ds-value { color: var(--blue); }

/* ============================================================
   PROFIT PAGE
   ============================================================ */
.profit-grid {
  display: grid;
  grid-template-columns: 320px 1fr 1.4fr;
  gap: 1rem;
  align-items: start;
}
.profit-stats-col { display: flex; flex-direction: column; gap: 0.75rem; }
.form-compact { display: flex; flex-direction: column; gap: 0.75rem; }
.form-compact .form-row { display: flex; flex-direction: column; gap: 0.25rem; }
.form-compact label { font-size: 0.78rem; color: var(--text-secondary); font-weight: 600; }
.form-compact input, .form-compact select {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
}
.form-compact input:focus, .form-compact select:focus { outline: none; border-color: var(--accent); }

/* ============================================================
   CLIENTS
   ============================================================ */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.client-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.client-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.client-avatar {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--blue-dim), var(--accent-dim));
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--blue);
}
.client-name { font-weight: 700; font-size: 0.95rem; }
.client-company { font-size: 0.8rem; color: var(--text-muted); }
.client-meta { font-size: 0.8rem; color: var(--text-secondary); display: flex; flex-direction: column; gap: 0.2rem; }
.client-actions { display: flex; gap: 0.5rem; }
.empty-card { color: var(--text-muted); font-size: 0.9rem; padding: 2rem; background: var(--bg-surface); border: 1px dashed var(--border-strong); border-radius: var(--radius); text-align: center; }

/* ============================================================
   REPORTS
   ============================================================ */
.reports-toolbar {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.report-placeholder { color: var(--text-muted); text-align: center; padding: 3rem; }
.report-content { animation: fadeIn 0.2s ease; }

.report-section { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1rem; }
.report-title { font-family: var(--font-display); font-size: 1.4rem; font-weight: 800; margin-bottom: 0.25rem; }
.report-subtitle { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.25rem; }
.report-row { display: flex; justify-content: space-between; padding: 0.55rem 0; border-bottom: 1px solid var(--border); font-size: 0.875rem; }
.report-row:last-child { border-bottom: none; }
.report-total { font-family: var(--font-display); font-weight: 800; font-size: 1.1rem; }

/* ============================================================
   PRICING
   ============================================================ */
.pricing-header { text-align: center; margin-bottom: 2.5rem; }
.pricing-header h2 { font-family: var(--font-display); font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; }
.pricing-header p { color: var(--text-secondary); margin-bottom: 1.25rem; }

.billing-toggle { display: flex; align-items: center; gap: 0.75rem; justify-content: center; font-size: 0.9rem; }
.toggle-switch { position: relative; width: 42px; height: 22px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--border-strong);
  border-radius: 99px;
  cursor: pointer;
  transition: var(--transition);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  left: 3px; bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: var(--transition);
}
input:checked + .toggle-slider { background: var(--accent); }
input:checked + .toggle-slider::before { transform: translateX(20px); }
.save-badge { background: var(--accent-dim); color: var(--accent); font-size: 0.72rem; padding: 0.15rem 0.45rem; border-radius: 99px; font-weight: 700; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}
.pricing-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.pricing-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.pricing-card.popular { border-color: var(--accent); }
.popular-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #000;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 0.2rem 0.75rem;
  border-radius: 99px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  white-space: nowrap;
}
.plan-name { font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; }
.plan-price { font-family: var(--font-display); font-size: 1rem; color: var(--text-secondary); }
.price-num { font-size: 2rem; font-weight: 800; color: var(--text-primary); }
.plan-desc { font-size: 0.82rem; color: var(--text-muted); }
.plan-features { display: flex; flex-direction: column; gap: 0.4rem; font-size: 0.82rem; flex: 1; }
.plan-features li { color: var(--text-secondary); }
.plan-features li:has(✗) { color: var(--text-muted); text-decoration: line-through; opacity: 0.6; }

/* ============================================================
   SUPPORT
   ============================================================ */
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.5rem; }
.support-card { text-align: center; padding: 2rem 1.5rem; display: flex; flex-direction: column; gap: 0.75rem; align-items: center; }
.support-icon { font-size: 2rem; }
.support-card h3 { font-family: var(--font-display); font-weight: 700; }
.support-card p { font-size: 0.85rem; color: var(--text-secondary); }

.faq-card {}
.faq-list { display: flex; flex-direction: column; gap: 0; }
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-item summary {
  padding: 0.9rem 0;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::after { content: '+'; color: var(--accent); font-size: 1.1rem; }
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 0 0.9rem; font-size: 0.85rem; color: var(--text-secondary); }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.65);
  backdrop-filter: blur(4px);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.modal-overlay.open { display: flex; animation: fadeIn 0.18s ease; }

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  animation: slideUp 0.22s ease;
}
.modal-lg { max-width: 680px; }

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.modal-close {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1;
  padding: 0.2rem;
  transition: color var(--transition);
}
.modal-close:hover { color: var(--text-primary); }

.modal form { padding: 1.25rem 1.5rem; display: flex; flex-direction: column; gap: 0.85rem; }
.form-row { display: flex; flex-direction: column; gap: 0.3rem; }
.form-row label { font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); }
.form-row input,
.form-row select,
.form-row textarea {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.75rem;
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
  width: 100%;
}
.form-row input:focus,
.form-row select:focus,
.form-row textarea:focus { outline: none; border-color: var(--accent); }
.form-row textarea { min-height: 80px; resize: vertical; }
.form-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.85rem; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

/* Invoice Items */
.invoice-items { display: flex; flex-direction: column; gap: 0.5rem; margin: 0.5rem 0; }
.items-header {
  display: grid;
  grid-template-columns: 1fr 80px 100px 100px 32px;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 0 0 0.25rem;
}
.invoice-line-item {
  display: grid;
  grid-template-columns: 1fr 80px 100px 100px 32px;
  gap: 0.5rem;
  align-items: center;
}
.invoice-line-item input {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.4rem 0.5rem;
  color: var(--text-primary);
  font-size: 0.82rem;
  font-family: var(--font-body);
  width: 100%;
}
.invoice-line-item input:focus { outline: none; border-color: var(--accent); }
.item-total { font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent); }
.remove-item-btn { color: var(--red); font-size: 0.9rem; padding: 0.2rem; }

.invoice-totals { display: flex; flex-direction: column; gap: 0.3rem; align-items: flex-end; margin: 0.5rem 0; }
.inv-total-row { display: flex; align-items: center; gap: 1rem; font-size: 0.85rem; color: var(--text-secondary); }
.inv-total-row span:first-child { min-width: 80px; text-align: right; }
.inv-grand-total { font-family: var(--font-display); font-size: 1rem; font-weight: 800; color: var(--text-primary); }
.tax-input { width: 60px !important; padding: 0.25rem 0.4rem !important; }

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  z-index: 999;
  box-shadow: var(--shadow-lg);
  transform: translateY(80px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  pointer-events: none;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-color: var(--accent); color: var(--accent); }
.toast.error   { border-color: var(--red); color: var(--red); }
.toast.info    { border-color: var(--blue); color: var(--blue); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.footer-brand { display: flex; align-items: center; gap: 0.4rem; font-weight: 700; color: var(--text-primary); }
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }

/* ============================================================
   ANNUAL SUMMARY TABLE
   ============================================================ */
.annual-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.annual-table th, .annual-table td { padding: 0.65rem 1rem; text-align: left; border-bottom: 1px solid var(--border); }
.annual-table th { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); background: var(--bg-elevated); }
.annual-table td { color: var(--text-secondary); font-family: var(--font-mono); }
.annual-table td:first-child { font-family: var(--font-body); font-weight: 600; color: var(--text-primary); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .profit-grid { grid-template-columns: 1fr 1fr; }
  .profit-grid .chart-card { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 240px; }

  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .mobile-menu-btn { display: flex; }

  .main-content { margin-left: 0; }

  .stats-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-grid-2 { grid-template-columns: 1fr; }
  .debt-summary-bar { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .profit-grid { grid-template-columns: 1fr; }
  .form-grid-2 { grid-template-columns: 1fr; }

  .search-input { width: 150px; }
  .search-input:focus { width: 170px; }

  .page-toolbar { flex-direction: column; align-items: flex-start; }
  .toolbar-left { width: 100%; }

  .topbar-right .search-wrap { display: none; }

  .items-header { display: none; }
  .invoice-line-item { grid-template-columns: 1fr 60px 80px 80px 28px; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .pages-container { padding: 1rem; }
  .modal { max-width: 100%; }
  .debt-tabs { flex-wrap: wrap; }
  .reports-toolbar { flex-direction: column; align-items: flex-start; }
}