/* ============================================================
   Accounts Book — Global Stylesheet
   Dark theme · Orange accents · Inter font
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
  --bg-base:    #0d0f12;
  --bg-card:    #161a20;
  --bg-card2:   #1c2028;
  --bg-hover:   #1f242c;
  --bg-input:   #1a1f28;
  --border:     #252b36;
  --border-light: #2e3542;

  --orange:     #f59e0b;
  --orange-dark:#d97706;
  --orange-dim: rgba(245,158,11,.12);

  --red:        #ef4444;
  --green:      #22c55e;
  --blue:       #3b82f6;
  --purple:     #a855f7;
  --cyan:       #06b6d4;

  --text-primary:   #f1f5f9;
  --text-secondary: #8b95a6;
  --text-muted:     #4b5563;
  --text-link:      #f59e0b;

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  --shadow:    0 4px 24px rgba(0,0,0,.45);
  --shadow-sm: 0 2px 8px rgba(0,0,0,.3);

  --sidebar-w: 240px;
  --topbar-h:  58px;
  --transition: .18s ease;
}

html { font-size: 14px; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.55;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--text-link); text-decoration: none; }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 99px; }

/* ── Layout ───────────────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }

/* ── Sidebar ──────────────────────────────────────────────── */
#sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 200;
  transition: transform var(--transition);
  overflow: hidden;
}
#sidebar.collapsed { transform: translateX(calc(-1 * var(--sidebar-w) + 58px)); }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  height: var(--topbar-h);
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-primary);
  flex-shrink: 0;
}
.sidebar-logo .logo-icon {
  width: 32px; height: 32px;
  background: var(--orange);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
  color: #000;
}
.sidebar-logo span { transition: opacity var(--transition); }

nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: 10px 8px; }

.nav-section-label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 12px 8px 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: .86rem;
  transition: background var(--transition), color var(--transition);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
}
.nav-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active { background: var(--orange-dim); color: var(--orange); }
.nav-item .icon { width: 18px; flex-shrink: 0; text-align: center; font-size: 1rem; }
.nav-item .badge {
  margin-left: auto;
  background: var(--red);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 99px;
}

.sidebar-footer {
  padding: 12px 8px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.user-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}
.user-card:hover { background: var(--bg-hover); }
.avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--orange);
  color: #000;
  font-size: .75rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.user-info { min-width: 0; }
.user-info .name { font-size: .85rem; font-weight: 600; color: var(--text-primary); truncate: ellipsis; }
.user-info .role { font-size: .72rem; color: var(--text-secondary); }

/* ── Main ─────────────────────────────────────────────────── */
#main {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--transition);
}
#main.expanded { margin-left: 58px; }

/* ── Topbar ───────────────────────────────────────────────── */
#topbar {
  height: var(--topbar-h);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}
.topbar-toggle {
  background: none; border: none; color: var(--text-secondary);
  font-size: 1.2rem; padding: 6px; border-radius: var(--radius-sm);
  transition: color var(--transition);
}
.topbar-toggle:hover { color: var(--text-primary); }
.topbar-title { font-weight: 700; font-size: 1rem; color: var(--text-primary); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.topbar-btn {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: .84rem;
  display: flex; align-items: center; gap: 6px;
  transition: all var(--transition);
}
.topbar-btn:hover { color: var(--text-primary); border-color: var(--border-light); }
.notif-dot { width: 8px; height: 8px; background: var(--orange); border-radius: 50%; position: absolute; top: 2px; right: 2px; }

/* ── Page content ─────────────────────────────────────────── */
#content { flex: 1; padding: 24px; overflow-y: auto; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-title { font-size: 1.4rem; font-weight: 700; color: var(--text-primary); }
.page-sub { font-size: .83rem; color: var(--text-secondary); margin-top: 2px; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
}
.card-sm { padding: 14px 16px; }
.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.card-title { font-size: .95rem; font-weight: 600; color: var(--text-primary); }

/* ── KPI Cards ────────────────────────────────────────────── */
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 14px; margin-bottom: 20px; }

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition);
}
.kpi-card:hover { border-color: var(--border-light); }
.kpi-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--kpi-color, var(--orange));
}
.kpi-label { font-size: .75rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 10px; }
.kpi-value { font-size: 1.55rem; font-weight: 800; color: var(--text-primary); line-height: 1; margin-bottom: 6px; }
.kpi-sub { font-size: .75rem; color: var(--text-secondary); display: flex; align-items: center; gap: 4px; }
.kpi-sub.up   { color: var(--green); }
.kpi-sub.down { color: var(--red); }
.kpi-icon {
  position: absolute;
  top: 18px; right: 18px;
  width: 38px; height: 38px;
  border-radius: var(--radius);
  background: var(--orange-dim);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
}

/* ── Grid layouts ─────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .84rem;
  font-weight: 600;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--orange); color: #000; }
.btn-primary:hover { background: var(--orange-dark); }
.btn-secondary { background: var(--bg-card2); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--border-light); }
.btn-danger { background: rgba(239,68,68,.15); color: var(--red); border: 1px solid rgba(239,68,68,.2); }
.btn-danger:hover { background: rgba(239,68,68,.25); }
.btn-success { background: rgba(34,197,94,.15); color: var(--green); border: 1px solid rgba(34,197,94,.2); }
.btn-sm { padding: 5px 11px; font-size: .78rem; }
.btn-icon { padding: 7px; border-radius: var(--radius-sm); background: var(--bg-card2); border: 1px solid var(--border); color: var(--text-secondary); }
.btn-icon:hover { color: var(--text-primary); }

/* ── Forms ────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: .78rem; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 6px; }
.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 9px 12px;
  font-size: .85rem;
  transition: border-color var(--transition);
  outline: none;
}
.form-control:focus { border-color: var(--orange); box-shadow: 0 0 0 3px var(--orange-dim); }
.form-control::placeholder { color: var(--text-muted); }
select.form-control { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238b95a6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 28px; }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.form-error { color: var(--red); font-size: .75rem; margin-top: 4px; }
.form-hint { color: var(--text-muted); font-size: .75rem; margin-top: 4px; }

/* ── Tables ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .84rem; }
thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background var(--transition); }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-hover); }
td { padding: 12px 14px; color: var(--text-primary); vertical-align: middle; }
td.muted { color: var(--text-secondary); }
td.mono { font-family: 'JetBrains Mono', monospace; font-size: .82rem; }

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-paid     { background: rgba(34,197,94,.12); color: #4ade80; }
.badge-partial  { background: rgba(245,158,11,.12); color: var(--orange); }
.badge-overdue  { background: rgba(239,68,68,.12);  color: #f87171; }
.badge-draft    { background: rgba(139,149,166,.12);color: var(--text-secondary); }
.badge-sent     { background: rgba(59,130,246,.12); color: #60a5fa; }
.badge-cancelled{ background: rgba(75,85,99,.15);   color: var(--text-muted); }
.badge-active   { background: rgba(34,197,94,.12);  color: #4ade80; }
.badge-inactive { background: rgba(75,85,99,.15);   color: var(--text-muted); }
.badge-approved { background: rgba(34,197,94,.12);  color: #4ade80; }
.badge-pending  { background: rgba(245,158,11,.12); color: var(--orange); }

/* ── Status pill map ──────────────────────────────────────── */
.pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 600;
}

/* ── Modals ───────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition);
}
.modal-lg { max-width: 860px; }
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 1rem; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text-secondary); font-size: 1.2rem; padding: 4px; border-radius: 4px; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 22px; }
.modal-footer { padding: 16px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ── Alerts / Toast ───────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: .84rem;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 260px;
  max-width: 380px;
  box-shadow: var(--shadow);
  animation: slideIn .2s ease;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error   { border-left: 3px solid var(--red); }
.toast.info    { border-left: 3px solid var(--blue); }
@keyframes slideIn { from { transform: translateX(40px); opacity:0; } to { transform: translateX(0); opacity:1; } }

/* ── Tabs ─────────────────────────────────────────────────── */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 20px; }
.tab { padding: 9px 16px; font-size: .84rem; font-weight: 500; color: var(--text-secondary); border: none; background: none; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: all var(--transition); cursor: pointer; }
.tab.active { color: var(--orange); border-bottom-color: var(--orange); }
.tab:hover:not(.active) { color: var(--text-primary); }

/* ── Search / filter bar ──────────────────────────────────── */
.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.search-wrap { position: relative; flex: 1; min-width: 200px; }
.search-wrap input { padding-left: 34px; }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: .9rem; pointer-events: none; }

/* ── Pagination ───────────────────────────────────────────── */
.pagination { display: flex; gap: 4px; align-items: center; justify-content: center; padding-top: 16px; }
.page-btn { padding: 6px 11px; border-radius: var(--radius-sm); border: 1px solid var(--border); background: var(--bg-card2); color: var(--text-secondary); font-size: .82rem; font-weight: 500; transition: all var(--transition); }
.page-btn:hover { border-color: var(--border-light); color: var(--text-primary); }
.page-btn.active { background: var(--orange); border-color: var(--orange); color: #000; font-weight: 700; }

/* ── Progress bar ─────────────────────────────────────────── */
.progress { height: 4px; background: var(--border); border-radius: 99px; overflow: hidden; }
.progress-bar { height: 100%; background: var(--orange); border-radius: 99px; }

/* ── Empty state ──────────────────────────────────────────── */
.empty-state { padding: 60px 20px; text-align: center; color: var(--text-secondary); }
.empty-icon { font-size: 2.5rem; margin-bottom: 12px; opacity: .4; }
.empty-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.empty-text { font-size: .84rem; }

/* ── Loader ───────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--orange);
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13,15,18,.7);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  z-index: 10;
}

/* ── Login page ───────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  background-image: radial-gradient(ellipse at 60% 20%, rgba(245,158,11,.06) 0%, transparent 60%);
}
.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 40px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}
.login-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; }
.login-logo .logo-icon { width: 36px; height: 36px; background: var(--orange); border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; color: #000; }
.login-logo .app-name { font-size: 1.15rem; font-weight: 700; }
.login-logo .app-name span { color: var(--orange); }
.login-title { font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.login-sub { font-size: .84rem; color: var(--text-secondary); margin-bottom: 28px; }
.login-footer { margin-top: 18px; text-align: center; font-size: .78rem; color: var(--text-muted); }

/* ── Chart wrapper ────────────────────────────────────────── */
.chart-wrap { position: relative; width: 100%; }

/* ── Divider ──────────────────────────────────────────────── */
.divider { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* ── Amount colors ────────────────────────────────────────── */
.amount-positive { color: var(--green); font-weight: 600; }
.amount-negative { color: var(--red); font-weight: 600; }
.amount-neutral  { color: var(--text-primary); font-weight: 600; }

/* ── Invoice builder ──────────────────────────────────────── */
.item-row { display: grid; grid-template-columns: 3fr 1fr 1fr 1fr 40px; gap: 8px; align-items: start; margin-bottom: 8px; }
.item-row .form-control { margin: 0; }

/* ── Report summary row ───────────────────────────────────── */
.report-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border); }
.report-row:last-child { border-bottom: none; font-weight: 700; font-size: 1rem; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --sidebar-w: 240px; }
  #sidebar { transform: translateX(-100%); }
  #sidebar.open { transform: translateX(0); }
  #main { margin-left: 0 !important; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
}