/* ==========================================================================
   Ledgermark — Design System
   Concept: a modern take on the paper ledger book & the ink rubber stamp.
   Display: Fraunces | Body/UI: Inter | Data/Numbers: IBM Plex Mono
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600;9..144,700&family=Inter:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  /* ---- Palette ---- */
  --paper: #F7F5EF;
  --paper-alt: #EFEAE0;
  --paper-deep: #E7E0D2;
  --ink: #1C2027;
  --ink-soft: #5B6170;
  --ink-faint: #8B90A0;
  --navy: #16223D;
  --navy-deep: #0D1729;
  --navy-tint: #2A3B62;
  --brass: #A9782F;
  --brass-soft: #F0E3C6;
  --emerald: #1F6F54;
  --emerald-soft: #DCEEE6;
  --rust: #A8432E;
  --rust-soft: #F3DED8;
  --slate: #56607A;
  --slate-soft: #E4E7EE;
  --line: #DDD6C4;
  --line-strong: #C9C0A8;
  --white: #FFFFFF;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(22, 34, 61, 0.06);
  --shadow-md: 0 6px 20px rgba(22, 34, 61, 0.08);
  --shadow-lg: 0 16px 40px rgba(22, 34, 61, 0.14);

  --sidebar-w: 240px;
  --topbar-h: 64px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--navy);
  margin: 0 0 .4em;
  font-weight: 600;
  letter-spacing: -0.01em;
}
h1 { font-size: 1.9rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
a { color: var(--navy); text-decoration: none; }
a:hover { color: var(--brass); }

::selection { background: var(--brass-soft); color: var(--navy-deep); }

:focus-visible {
  outline: 2px solid var(--brass);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

/* ==========================================================================
   Ledger rule texture — signature background device
   ========================================================================== */
.ledger-texture {
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 27px,
    rgba(22, 34, 61, 0.045) 28px
  );
}

/* ==========================================================================
   Auth screens (login)
   ========================================================================== */
.auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--paper);
  position: relative;
  overflow: hidden;
}
.auth-screen::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(to bottom, transparent, transparent 31px, rgba(22,34,61,0.05) 32px);
  pointer-events: none;
}
.auth-lang-switch {
  position: absolute;
  top: 20px; right: 20px;
  display: flex; align-items: center; border: 1px solid var(--line-strong); border-radius: 999px; overflow: hidden;
  background: var(--white);
  z-index: 2;
}
.auth-lang-switch a {
  padding: 6px 13px; font-size: 0.74rem; font-weight: 700; letter-spacing: 0.03em;
  color: var(--ink-faint); font-family: var(--font-mono);
}
.auth-lang-switch a.active { background: var(--navy); color: var(--white); }
.auth-lang-switch a:hover:not(.active) { background: var(--paper-alt); color: var(--ink); }
.auth-card {
  position: relative;
  width: 100%;
  max-width: 400px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 40px 36px 32px;
}
.auth-seal {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  transform: rotate(-6deg);
}
.auth-seal svg { width: 26px; height: 26px; stroke: var(--navy); }
.auth-title {
  text-align: center;
  font-size: 1.5rem;
  margin-bottom: 4px;
}
.auth-subtitle {
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin-bottom: 28px;
}
.auth-footer-note {
  text-align: center;
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--ink-faint);
}

/* ==========================================================================
   Form elements
   ========================================================================== */
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}
.field .hint { font-size: 0.78rem; color: var(--ink-faint); margin-top: 4px; }
.input, select.input, textarea.input {
  width: 100%;
  padding: 11px 13px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s;
}
.input:focus, select.input:focus, textarea.input:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(22,34,61,0.1);
}
textarea.input { resize: vertical; min-height: 80px; }
.input-row { display: flex; gap: 12px; }
.input-row > .field { flex: 1; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: 16px; height: 16px; accent-color: var(--navy); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, border-color .15s, transform .1s, box-shadow .15s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-deep); color: var(--white); }
.btn-block { width: 100%; }
.btn-secondary { background: var(--white); color: var(--navy); border-color: var(--line-strong); }
.btn-secondary:hover { border-color: var(--navy); color: var(--navy); }
.btn-ghost { background: transparent; color: var(--ink-soft); border-color: transparent; }
.btn-ghost:hover { background: var(--paper-alt); color: var(--ink); }
.btn-danger { background: var(--white); color: var(--rust); border-color: var(--rust-soft); }
.btn-danger:hover { background: var(--rust-soft); }
.btn-sm { padding: 7px 12px; font-size: 0.8rem; }
.btn svg { width: 16px; height: 16px; }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin-bottom: 18px;
  border: 1px solid transparent;
}
.alert-error { background: var(--rust-soft); color: #7A2E1E; border-color: #E3B7A8; }
.alert-success { background: var(--emerald-soft); color: #144D3A; border-color: #B7DECD; }
.alert-info { background: var(--slate-soft); color: var(--navy); border-color: #C7CEDD; }

/* ==========================================================================
   App shell: sidebar + topbar + content
   ========================================================================== */
.app-shell { min-height: 100vh; }

.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--sidebar-w);
  background: var(--navy);
  color: #C9D2E6;
  display: flex;
  flex-direction: column;
  z-index: 40;
  transition: transform .2s ease;
}
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 22px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.sidebar-brand .seal {
  width: 32px; height: 32px;
  border: 1.5px solid var(--brass);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transform: rotate(-6deg);
}
.sidebar-brand .seal svg { width: 16px; height: 16px; stroke: var(--brass); }
.sidebar-brand .name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--white);
  font-weight: 600;
}
.sidebar-nav { flex: 1; padding: 14px 12px; overflow-y: auto; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: #B7C2DC;
  font-size: 0.89rem;
  font-weight: 500;
  margin-bottom: 2px;
  transition: background .15s, color .15s;
}
.sidebar-nav a svg { width: 17px; height: 17px; flex-shrink: 0; opacity: 0.85; }
.sidebar-nav a:hover { background: rgba(255,255,255,0.06); color: var(--white); }
.sidebar-nav a.active { background: rgba(169,120,47,0.18); color: var(--white); }
.sidebar-nav a.active svg { opacity: 1; stroke: var(--brass); }
.sidebar-nav .nav-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #7C87A6;
  padding: 16px 12px 6px;
}
.sidebar-foot {
  padding: 16px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.78rem;
  color: #8996B5;
}

.sidebar-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(13,23,41,0.5);
  z-index: 35;
}

.main-col {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.topbar {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.topbar-title { font-family: var(--font-display); font-size: 1.2rem; color: var(--navy); }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.user-chip {
  display: flex; align-items: center; gap: 9px;
  font-size: 0.85rem; color: var(--ink-soft);
}
.lang-switch {
  display: flex; align-items: center; border: 1px solid var(--line-strong); border-radius: 999px; overflow: hidden;
}
.lang-switch a {
  padding: 5px 11px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.03em;
  color: var(--ink-faint); font-family: var(--font-mono);
}
.lang-switch a.active { background: var(--navy); color: var(--white); }
.lang-switch a:hover:not(.active) { background: var(--paper-alt); color: var(--ink); }
.nav-badge {
  margin-left: auto; background: var(--brass); color: var(--white); font-family: var(--font-mono);
  font-size: 0.68rem; font-weight: 700; padding: 1px 7px; border-radius: 999px; line-height: 1.5;
}
.user-chip .avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--brass-soft); color: var(--brass);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 0.8rem; font-family: var(--font-display);
}
.menu-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  padding: 6px; color: var(--navy);
}
.menu-toggle svg { width: 24px; height: 24px; }

.content { padding: 28px; flex: 1; max-width: 1180px; width: 100%; }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.page-header p { color: var(--ink-soft); margin: 4px 0 0; font-size: 0.9rem; }
.page-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* ==========================================================================
   Cards / stats
   ========================================================================== */
.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-pad { padding: 22px 24px; }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  position: relative;
  overflow: hidden;
}
.stat-card .stat-label {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 600;
}
.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--navy);
  margin-top: 8px;
}
.stat-card .stat-sub { font-size: 0.78rem; color: var(--ink-faint); margin-top: 4px; }
.stat-card.accent-brass { border-top: 3px solid var(--brass); }
.stat-card.accent-emerald { border-top: 3px solid var(--emerald); }
.stat-card.accent-rust { border-top: 3px solid var(--rust); }
.stat-card.accent-navy { border-top: 3px solid var(--navy); }

/* ==========================================================================
   Tables (ledger style — hairline rules, not heavy borders)
   ========================================================================== */
.table-wrap { overflow-x: auto; }
table.ledger {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
table.ledger thead th {
  text-align: left;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 600;
  padding: 10px 14px;
  border-bottom: 1.5px solid var(--line-strong);
  white-space: nowrap;
}
table.ledger tbody td {
  padding: 14px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  vertical-align: middle;
}
table.ledger tbody tr:hover { background: var(--paper-alt); }
table.ledger .num { font-family: var(--font-mono); text-align: right; }
table.ledger a.row-link { color: var(--navy); font-weight: 600; }

.empty-state {
  text-align: center;
  padding: 56px 24px;
  color: var(--ink-faint);
}
.empty-state svg { width: 40px; height: 40px; margin-bottom: 12px; opacity: 0.5; }
.empty-state h3 { color: var(--ink-soft); margin-bottom: 6px; }

/* ==========================================================================
   Status stamp badges — the signature element
   ========================================================================== */
.stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 11px;
  border-radius: 999px;
  border: 1.5px solid currentColor;
  transform: rotate(-2deg);
}
.badge-draft   { color: var(--slate); background: var(--slate-soft); }
.badge-sent    { color: var(--brass); background: var(--brass-soft); }
.badge-paid    { color: var(--emerald); background: var(--emerald-soft); }
.badge-overdue { color: var(--rust); background: var(--rust-soft); }
.badge-cancelled { color: var(--ink-faint); background: var(--paper-alt); text-decoration: line-through; }

/* ==========================================================================
   Invoice builder (line items)
   ========================================================================== */
.line-items { border: 1px solid var(--line); border-radius: var(--radius-md); overflow: hidden; }
.line-items-head, .line-item-row {
  display: grid;
  grid-template-columns: 1fr 90px 110px 90px 120px 36px;
  gap: 10px;
  align-items: center;
  padding: 10px 14px;
}
.line-items-head {
  background: var(--paper-alt);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  font-weight: 600;
}
.line-item-row { border-top: 1px solid var(--line); }
.line-item-row input, .line-item-row select { padding: 8px 10px; font-size: 0.85rem; }
.line-total-display { font-family: var(--font-mono); text-align: right; font-weight: 600; color: var(--navy); }
.remove-line { background: none; border: none; color: var(--rust); cursor: pointer; padding: 6px; }
.line-items-foot { padding: 12px 14px; background: var(--paper-alt); }

.totals-box { margin-left: auto; width: 100%; max-width: 320px; }
.totals-box .row { display: flex; justify-content: space-between; padding: 7px 0; font-size: 0.9rem; }
.totals-box .row.grand { border-top: 1.5px solid var(--line-strong); margin-top: 6px; padding-top: 12px; font-weight: 700; font-size: 1.05rem; color: var(--navy); }
.totals-box .row .val { font-family: var(--font-mono); }

/* ==========================================================================
   Invoice view / print document
   ========================================================================== */
.invoice-doc {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  max-width: 860px;
}
.invoice-doc-head { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.invoice-doc-head .logo { max-height: 56px; max-width: 220px; margin-bottom: 12px; }
.invoice-doc-head .biz-name { font-family: var(--font-display); font-size: 1.15rem; color: var(--navy); font-weight: 600; }
.invoice-doc-head .biz-meta { font-size: 0.82rem; color: var(--ink-soft); line-height: 1.6; }
.invoice-doc-head .doc-title { text-align: right; }
.invoice-doc-head .doc-title h1 { font-size: 2rem; letter-spacing: 0.02em; margin-bottom: 6px; }
.invoice-doc-head .doc-number { font-family: var(--font-mono); color: var(--ink-soft); font-size: 0.9rem; }

.invoice-parties { display: flex; justify-content: space-between; gap: 24px; margin-bottom: 30px; padding: 20px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.invoice-parties .block h4 { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-faint); margin-bottom: 8px; }
.invoice-parties .block p { margin: 0; font-size: 0.88rem; line-height: 1.6; }
.invoice-meta-grid { display: grid; grid-template-columns: repeat(3, auto); gap: 24px; text-align: right; }
.invoice-meta-grid .m-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); }
.invoice-meta-grid .m-value { font-family: var(--font-mono); font-size: 0.88rem; color: var(--ink); margin-top: 3px; }

table.invoice-items-table { width: 100%; border-collapse: collapse; margin-bottom: 24px; }
table.invoice-items-table th {
  text-align: left; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--ink-faint); padding: 8px 6px; border-bottom: 1.5px solid var(--navy);
}
table.invoice-items-table td { padding: 12px 6px; border-bottom: 1px solid var(--line); font-size: 0.88rem; }
table.invoice-items-table th.num, table.invoice-items-table td.num { text-align: right; font-family: var(--font-mono); }

.invoice-doc .totals-box { margin-top: 6px; }
.invoice-doc .notes-block { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 0.85rem; color: var(--ink-soft); }
.invoice-doc .notes-block h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--ink-faint); margin-bottom: 6px; }
.invoice-doc .bank-block { margin-top: 18px; font-size: 0.82rem; color: var(--ink-soft); }
.invoice-doc .legal-footer { margin-top: 36px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 0.72rem; color: var(--ink-faint); text-align: center; }

.doc-toolbar { display: flex; justify-content: flex-end; gap: 10px; margin-bottom: 18px; max-width: 860px; }

/* ==========================================================================
   Misc: dropdown, modal-ish confirm, table filters
   ========================================================================== */
.filter-bar { display: flex; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; align-items: center; }
.filter-bar .input { max-width: 220px; }
.filter-bar select.input { max-width: 170px; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.section-divider { border: none; border-top: 1px solid var(--line); margin: 26px 0; }

.helper-text { font-size: 0.8rem; color: var(--ink-faint); }
.tag-pill { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--paper-alt); font-size: 0.72rem; color: var(--ink-soft); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 980px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .two-col { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .sidebar { transform: translateX(-100%); box-shadow: var(--shadow-lg); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-backdrop.open { display: block; }
  .main-col { margin-left: 0; }
  .menu-toggle { display: inline-flex; }
  .content { padding: 18px; }
  .topbar { padding: 0 16px; }
  .invoice-doc { padding: 28px 20px; }
  .invoice-doc-head { flex-direction: column; gap: 18px; }
  .invoice-doc-head .doc-title { text-align: left; }
  .invoice-parties { flex-direction: column; gap: 18px; }
  .invoice-meta-grid { grid-template-columns: repeat(3, auto); text-align: left; justify-content: flex-start; }
}

@media (max-width: 640px) {
  .stat-grid { grid-template-columns: 1fr; }
  .input-row { flex-direction: column; gap: 0; }
  .line-items-head { display: none; }
  .line-item-row {
    grid-template-columns: 1fr;
    gap: 8px;
    padding: 14px;
    position: relative;
  }
  .line-item-row .remove-line { position: absolute; top: 10px; right: 10px; }
  table.invoice-items-table thead { display: none; }
  table.invoice-items-table tr { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); }
  table.invoice-items-table td { display: flex; justify-content: space-between; border-bottom: none; padding: 3px 0; }
  table.invoice-items-table td.num::before { content: attr(data-label); font-family: var(--font-body); color: var(--ink-faint); font-size: 0.78rem; }
  .page-header { flex-direction: column; }
  .page-actions { width: 100%; }
  .page-actions .btn { flex: 1; }
}

/* ==========================================================================
   Print (PDF export uses a dedicated template, this covers browser print of view page)
   ========================================================================== */
@media print {
  .sidebar, .topbar, .doc-toolbar, .sidebar-backdrop { display: none !important; }
  .main-col { margin-left: 0 !important; }
  .content { padding: 0 !important; }
  .invoice-doc { border: none; box-shadow: none; }
}