/* ── Design Tokens (Xero/QuickBooks inspired) ──────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --brand:     #1b5e94;
  --brand-d:   #144a77;
  --brand-l:   #e8f1f9;
  --accent:    #13b5ea;
  --ink:       #1a1d23;
  --ink2:      #4a5568;
  --ink3:      #8a96a8;
  --border:    #e2e8f0;
  --surface:   #f7f9fc;
  --white:     #ffffff;
  --green:     #0b825d;
  --green-l:   #e6f4ef;
  --amber:     #b45309;
  --amber-l:   #fef3c7;
  --red:       #c53030;
  --red-l:     #fff5f5;
  --radius-sm: 6px;
  --radius:    8px;
  --radius-lg: 12px;
  --shadow:    0 4px 12px rgba(0,0,0,.08);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--surface);
  color: var(--ink);
  font-size: 13.5px;
  line-height: 1.5;
}

/* ── AUTH ───────────────────────────────────────────────── */
#auth-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand) 0%, #0e3d6a 100%);
}

.auth-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 40px 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 24px 64px rgba(0,0,0,.3);
  text-align: center;
}

.auth-logo {
  width: 56px; height: 56px;
  background: var(--brand);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 24px; color: white; font-weight: 700;
}

.auth-card h1 { font-size: 20px; font-weight: 700; letter-spacing: -0.3px; }
.auth-card p  { color: var(--ink3); font-size: 13px; margin: 6px 0 32px; }

.google-btn {
  width: 100%;
  padding: 12px 20px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  font-family: inherit; font-size: 14px; font-weight: 500;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 10px;
  transition: all .15s; color: var(--ink);
}
.google-btn:hover { background: var(--surface); border-color: var(--ink3); }

#auth-error { color: var(--red); font-size: 12.5px; margin-top: 12px; display: none; }

/* ── PENDING ────────────────────────────────────────────── */
#pending-screen {
  min-height: 100vh; display: none;
  align-items: center; justify-content: center;
  background: var(--surface); text-align: center;
}
.pending-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 48px 40px; max-width: 420px; border: 1px solid var(--border);
}
.pending-card h2 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.pending-card p  { color: var(--ink3); font-size: 13px; margin-bottom: 20px; }

/* ── APP SHELL ──────────────────────────────────────────── */
#app { display: none; }

.topbar {
  height: 56px; background: var(--brand);
  display: flex; align-items: center; padding: 0 20px; gap: 16px;
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}

.topbar-logo {
  font-size: 16px; font-weight: 700; color: white; letter-spacing: -0.3px;
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
}

.topbar-logo-badge {
  background: var(--accent); color: white;
  font-size: 10px; font-weight: 700; padding: 2px 6px;
  border-radius: 4px; letter-spacing: .5px;
}

.topbar-nav {
  display: flex; gap: 2px; flex: 1; margin-left: 12px;
  overflow-x: auto;
}
.topbar-nav::-webkit-scrollbar { display: none; }

.nav-item {
  padding: 6px 12px; color: rgba(255,255,255,.7);
  font-size: 13px; font-weight: 500; cursor: pointer;
  border-radius: var(--radius-sm); transition: all .15s; white-space: nowrap;
}
.nav-item:hover  { color: white; background: rgba(255,255,255,.1); }
.nav-item.active { color: white; background: rgba(255,255,255,.18); }

.topbar-right { display: flex; align-items: center; gap: 10px; margin-left: auto; }

.user-pill {
  display: flex; align-items: center; gap: 8px;
  color: rgba(255,255,255,.85); font-size: 12.5px;
}

.user-avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600; color: white;
  overflow: hidden; flex-shrink: 0;
}
.user-avatar img { width: 100%; height: 100%; object-fit: cover; }

.role-badge {
  font-size: 10px; font-weight: 600; padding: 2px 7px;
  border-radius: 10px; background: rgba(255,255,255,.15);
  color: rgba(255,255,255,.9); text-transform: uppercase; letter-spacing: .5px;
}

.topbar-btn {
  padding: 6px 12px; border-radius: var(--radius-sm);
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  color: rgba(255,255,255,.85); font-family: inherit; font-size: 12.5px;
  cursor: pointer; transition: all .15s;
}
.topbar-btn:hover { background: rgba(255,255,255,.2); }

/* ── MAIN CONTENT ───────────────────────────────────────── */
.main { margin-top: 56px; padding: 28px 32px; }

.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 24px; gap: 16px; flex-wrap: wrap;
}
.page-title    { font-size: 22px; font-weight: 700; letter-spacing: -0.4px; }
.page-subtitle { font-size: 13px; color: var(--ink3); margin-top: 3px; }
.page-actions  { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }

/* ── KPI CARDS ──────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 28px;
}

.kpi-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
  position: relative; overflow: hidden;
}
.kpi-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0;
  height: 3px; background: var(--kpi-color, var(--brand));
}
.kpi-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .7px; color: var(--ink3); }
.kpi-value { font-size: 24px; font-weight: 700; letter-spacing: -0.5px; margin-top: 8px; font-variant-numeric: tabular-nums; }
.kpi-sub   { font-size: 12px; color: var(--ink3); margin-top: 4px; }

/* ── PANEL ──────────────────────────────────────────────── */
.panel {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; margin-bottom: 16px;
}
.panel-header {
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.panel-title { font-size: 14px; font-weight: 600; }

/* ── TOOLBAR ────────────────────────────────────────────── */
.toolbar { display: flex; gap: 8px; margin-bottom: 16px; align-items: center; flex-wrap: wrap; }

.search-wrap { position: relative; flex: 1; min-width: 180px; }
.search-wrap input {
  width: 100%; padding: 8px 12px 8px 34px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 13.5px; transition: border-color .15s; background: var(--white);
}
.search-wrap input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-l); }
.search-icon { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); color: var(--ink3); font-size: 14px; pointer-events: none; }

select {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 13.5px; background: var(--white); color: var(--ink); cursor: pointer;
}
select:focus { outline: none; border-color: var(--brand); }

/* ── BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-family: inherit; font-size: 13px; font-weight: 500;
  cursor: pointer; border: 1px solid var(--border);
  background: var(--white); color: var(--ink); transition: all .15s; white-space: nowrap;
}
.btn:hover     { background: var(--surface); }
.btn-primary   { background: var(--brand); color: white; border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-d); border-color: var(--brand-d); }
.btn-outline   { border-color: var(--brand); color: var(--brand); }
.btn-outline:hover { background: var(--brand-l); }
.btn-danger    { color: var(--red); border-color: #fecaca; }
.btn-danger:hover { background: var(--red-l); }
.btn-sm        { padding: 5px 10px; font-size: 12px; }

/* ── TABLE ──────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  padding: 10px 16px; text-align: left;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .6px;
  color: var(--ink3); background: #f8fafc; border-bottom: 1px solid var(--border); white-space: nowrap;
}
tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: #fafbfe; }
td { padding: 12px 16px; vertical-align: middle; }
.mono { font-variant-numeric: tabular-nums; font-size: 12.5px; letter-spacing: .3px; }

/* ── BADGES ─────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px; border-radius: 20px;
  font-size: 11px; font-weight: 600; white-space: nowrap;
}
.badge-paid    { background: var(--green-l); color: var(--green); }
.badge-partial { background: var(--amber-l); color: var(--amber); }
.badge-unpaid  { background: var(--red-l);   color: var(--red); }
.badge-admin   { background: var(--brand-l); color: var(--brand); }
.badge-user    { background: #f0fdf4; color: #166534; }
.badge-pending { background: var(--amber-l); color: var(--amber); }

/* ── FORMS ──────────────────────────────────────────────── */
.form-group  { margin-bottom: 16px; }
.form-label  { display: block; font-size: 12px; font-weight: 600; color: var(--ink2); margin-bottom: 5px; text-transform: uppercase; letter-spacing: .4px; }
.form-control {
  width: 100%; padding: 9px 12px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-family: inherit; font-size: 13.5px; color: var(--ink);
  transition: border-color .15s; background: var(--white);
}
.form-control:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px var(--brand-l); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ── MODAL ──────────────────────────────────────────────── */
.modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(10,15,30,.5); z-index: 300;
  align-items: center; justify-content: center; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--white); border-radius: var(--radius-lg);
  width: 100%; max-width: 580px; max-height: 90vh; overflow-y: auto;
  box-shadow: 0 32px 80px rgba(0,0,0,.2); animation: slideUp .2s ease;
}
@keyframes slideUp { from { transform: translateY(12px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-header {
  padding: 18px 24px 16px; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; background: var(--white); z-index: 1;
}
.modal-title  { font-size: 15px; font-weight: 700; }
.modal-body   { padding: 24px; }
.modal-footer {
  padding: 16px 24px; border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 8px;
  position: sticky; bottom: 0; background: var(--white);
}
.close-btn { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--ink3); padding: 4px 6px; border-radius: 4px; }
.close-btn:hover { background: var(--surface); color: var(--ink); }

/* ── TABS ───────────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab  { padding: 10px 18px; font-size: 13.5px; font-weight: 500; color: var(--ink3); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .15s; }
.tab:hover  { color: var(--ink); }
.tab.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
.tab-panel  { display: none; }
.tab-panel.active { display: block; }

/* ── IMPORT DROPZONE ────────────────────────────────────── */
.dropzone {
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 32px; text-align: center; cursor: pointer;
  transition: all .15s; color: var(--ink3);
}
.dropzone:hover { border-color: var(--brand); background: var(--brand-l); color: var(--brand); }

/* ── EMPTY / LOADING ────────────────────────────────────── */
.empty      { text-align: center; padding: 48px 20px; color: var(--ink3); }
.empty p    { font-size: 13px; margin-top: 4px; }
.spinner    { width: 18px; height: 18px; border: 2px solid var(--border); border-top-color: var(--brand); border-radius: 50%; animation: spin .7s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-cell { text-align: center; padding: 40px; }
.load-more  { text-align: center; padding: 16px; border-top: 1px solid var(--border); }

/* ── TOAST ──────────────────────────────────────────────── */
#toast {
  position: fixed; bottom: 24px; right: 24px;
  background: var(--ink); color: white;
  padding: 12px 20px; border-radius: var(--radius);
  font-size: 13.5px; transform: translateY(80px); opacity: 0;
  transition: all .25s; z-index: 999; max-width: 340px; box-shadow: var(--shadow);
}
#toast.show    { transform: translateY(0); opacity: 1; }
#toast.success { background: var(--green); }
#toast.error   { background: var(--red); }

/* ── INFO BOX ───────────────────────────────────────────── */
.info-box {
  padding: 16px; background: var(--brand-l); border-radius: var(--radius);
  border: 1px solid #c3d9ef; font-size: 13px; color: var(--ink2); margin-top: 20px;
}

/* ── EXPORT GRID ────────────────────────────────────────── */
.export-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.export-card {
  padding: 24px;
}

.export-card-title {
  font-size: 14px; font-weight: 600; margin-bottom: 6px;
}

.export-card-desc {
  color: var(--ink3); font-size: 12.5px; margin-bottom: 16px;
}

.import-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.import-section-title {
  font-size: 14px; font-weight: 600; margin-bottom: 4px;
}

.import-section-desc {
  color: var(--ink3); font-size: 12.5px; margin-bottom: 12px;
}

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .main { padding: 16px; }
  .form-row { grid-template-columns: 1fr; }
  .import-grid { grid-template-columns: 1fr; }
  .kpi-grid { grid-template-columns: 1fr 1fr; }
}