@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&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  --paper: #F1F3EE;
  --surface: #FFFFFF;
  --surface-alt: #E7EBE3;
  --ink: #1C2321;
  --ink-soft: #57645D;
  --ink-faint: #8B978F;
  --line: #D6DECF;
  --line-strong: #B7C2B0;
  --stamp-green: #2F6F5E;
  --stamp-green-bg: #E4EFEA;
  --stamp-red: #A6432F;
  --stamp-red-bg: #F5E7E2;
  --stamp-amber: #9C7A2E;
  --stamp-amber-bg: #F2ECDB;

  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
}

a { color: inherit; }

.app-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--ink);
  color: var(--paper);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.25;
}

.brand small {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #93A398;
  margin-top: 6px;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-list a {
  display: block;
  text-decoration: none;
  color: #C9D3C6;
  font-size: 14px;
  padding: 9px 10px;
  border-radius: 4px;
  border-left: 2px solid transparent;
}

.nav-list a:hover {
  background: rgba(255,255,255,0.06);
  color: #fff;
}

.nav-list a.active {
  color: #fff;
  border-left-color: var(--stamp-green);
  background: rgba(255,255,255,0.06);
  font-weight: 500;
}

.nav-list-secondary {
  padding-top: 10px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.client-badge {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  padding: 12px 14px;
}

.client-badge-label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #93A398;
  margin-bottom: 4px;
}

.client-badge-name {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  word-break: break-word;
}

.client-badge-switch {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--stamp-green);
  text-decoration: none;
}

.client-badge-switch:hover { text-decoration: underline; }

.sidebar-footer {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #7C8C81;
}

.sidebar-footer a {
  color: #C9D3C6;
  text-decoration: underline;
}

.main {
  padding: 36px 44px 60px;
  max-width: 1180px;
}

.page-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 6px;
}

.page-title {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  margin: 0 0 28px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}

.page-title .subtitle {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-soft);
}

.stamp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
  transform: rotate(-2deg);
  white-space: nowrap;
}

.stamp--exported { color: var(--stamp-green); background: var(--stamp-green-bg); }
.stamp--pending { color: var(--stamp-amber); background: var(--stamp-amber-bg); }
.stamp--correction { color: var(--stamp-red); background: var(--stamp-red-bg); }

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 18px 20px;
}

.stat-card .label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  margin-bottom: 10px;
}

.stat-card .value {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.stat-card .value.accent-green { color: var(--stamp-green); }
.stat-card .value.accent-amber { color: var(--stamp-amber); }

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 24px 26px;
  margin-bottom: 24px;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}

.panel-header h2 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

.panel-header .hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
}

.actions-row {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 5px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn:hover { background: #2E3833; }

.btn.secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn.secondary:hover { background: var(--surface-alt); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  font-weight: 500;
  padding: 0 12px 10px;
  border-bottom: 1.5px solid var(--line-strong);
}

tbody td {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

tbody tr:hover { background: var(--surface-alt); }

td.num, th.num { text-align: right; font-family: var(--font-mono); font-variant-numeric: tabular-nums; }

td a.invoice-link {
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px dotted var(--ink-faint);
}

.filter-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 18px;
}

.filter-tabs a {
  font-family: var(--font-mono);
  font-size: 12px;
  text-decoration: none;
  padding: 7px 14px;
  border-radius: 4px;
  color: var(--ink-soft);
  border: 1px solid transparent;
}

.filter-tabs a.active {
  background: var(--surface);
  border-color: var(--line-strong);
  color: var(--ink);
  font-weight: 600;
}

.flash {
  padding: 12px 16px;
  border-radius: 5px;
  margin-bottom: 20px;
  font-size: 14px;
  border: 1px solid;
}

.flash-success { background: var(--stamp-green-bg); color: var(--stamp-green); border-color: var(--stamp-green); }
.flash-error { background: var(--stamp-red-bg); color: var(--stamp-red); border-color: var(--stamp-red); }
.flash-info { background: var(--surface-alt); color: var(--ink-soft); border-color: var(--line-strong); }

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 40px 40px 32px;
  width: 340px;
}

.login-card .brand {
  color: var(--ink);
  margin-bottom: 28px;
}

.login-card .brand small { color: var(--ink-faint); }

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 14px;
  background: var(--paper);
}

.field input:focus {
  outline: 2px solid var(--stamp-green);
  outline-offset: 1px;
}

.login-card .btn { width: 100%; justify-content: center; margin-top: 6px; }

.chart-wrap { position: relative; height: 220px; }

.log-viewer {
  background: var(--ink);
  color: #C9D3C6;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  padding: 20px;
  border-radius: 6px;
  max-height: 70vh;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 13px;
}

.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.client-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 20px 22px;
  text-decoration: none;
  color: var(--ink);
  display: block;
  transition: border-color 0.15s;
}

.client-card:hover { border-color: var(--stamp-green); }

.client-card .name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.client-card .meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-faint);
}

.client-card-add {
  border: 1.5px dashed var(--line-strong);
  border-radius: 6px;
  padding: 20px 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 13px;
  min-height: 90px;
}

.client-card-add:hover { border-color: var(--stamp-green); color: var(--stamp-green); }

.client-card-actions {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

.client-card-actions a, .client-card-actions button {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
}

.client-card-actions button:hover, .client-card-actions a:hover { color: var(--stamp-red); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 20px;
}

.form-grid .field-full { grid-column: 1 / -1; }

.field-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
  margin-top: 4px;
}

.oauth-connect-box {
  background: var(--stamp-green-bg);
  border: 1px solid var(--stamp-green);
  border-radius: 6px;
  padding: 18px 20px;
  margin-bottom: 20px;
}

.oauth-connect-box p {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--ink);
}

.auth-method-toggle {
  font-family: var(--font-mono);
  font-size: 12px;
  margin-top: 18px;
}

.auth-method-toggle a { color: var(--ink-soft); }

@media (max-width: 860px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { flex-direction: column; padding: 16px 20px; }
  .sidebar-footer { display: block; }
  .main { padding: 24px 20px 40px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}