@import url('https://fonts.googleapis.com/css2?family=Zilla+Slab:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root {
  --ink: #16202C;
  --ink-2: #1E2C3C;
  --paper: #F6F1E7;
  --paper-dim: #EDE6D6;
  --line: #3A4A5C;
  --line-soft: rgba(255,255,255,0.08);
  --stamp-red: #B23A2E;
  --stamp-red-dim: rgba(178,58,46,0.15);
  --ledger-green: #2F6F4E;
  --ledger-green-dim: rgba(47,111,78,0.15);
  --amber: #C68A2E;
  --amber-dim: rgba(198,138,46,0.15);
  --blue: #2E6FA3;
  --blue-dim: rgba(46,111,163,0.15);
  --purple: #6B4E9E;
  --purple-dim: rgba(107,78,158,0.15);
  --text-on-ink: #F6F1E7;
  --text-muted-on-ink: #9AA7B5;
  --text-on-paper: #16202C;
  --text-muted-on-paper: #5C6B7A;
  --radius: 10px;
  --font-display: 'Zilla Slab', serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--ink);
  color: var(--text-on-ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea { font-family: inherit; }

a { color: inherit; }

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 4px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 600; margin: 0; }

.mono { font-family: var(--font-mono); letter-spacing: 0.02em; }

/* ============ LAYOUT ============ */

#app { display: none; min-height: 100vh; grid-template-columns: 220px 1fr; }
#app.active { display: grid; }

.sidebar {
  background: var(--ink-2);
  border-right: 1px solid var(--line-soft);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  padding: 0 8px;
}

.sidebar .brand .stamp-mark {
  width: 34px; height: 34px;
  border: 2px solid var(--stamp-red);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--stamp-red);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  transform: rotate(-8deg);
}

.sidebar .brand .name { font-family: var(--font-display); font-size: 17px; font-weight: 700; }
.sidebar .brand .name span { color: var(--stamp-red); }

.nav-section-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted-on-ink);
  margin: 16px 8px 6px;
  font-weight: 600;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--text-muted-on-ink);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.nav-item:hover { background: var(--line-soft); color: var(--text-on-ink); }
.nav-item.active { background: var(--stamp-red-dim); color: #E8A79E; }
.nav-item .badge {
  margin-left: auto;
  background: var(--line-soft);
  padding: 1px 7px;
  border-radius: 20px;
  font-size: 10.5px;
  font-family: var(--font-mono);
}

.main {
  background: var(--paper);
  color: var(--text-on-paper);
  padding: 28px 34px;
  overflow-y: auto;
}

.page-header {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 22px; flex-wrap: wrap; gap: 12px;
}
.page-header h1 { font-size: 24px; }
.page-header .sub { color: var(--text-muted-on-paper); font-size: 13px; margin-top: 4px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px;
  border-radius: 8px;
  border: none;
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .12s, transform .1s;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--stamp-red); color: #fff; }
.btn-primary:hover { opacity: .92; }
.btn-ghost { background: transparent; border: 1px solid var(--line); color: var(--text-on-paper); }
.btn-ghost:hover { background: rgba(0,0,0,0.04); }
.btn-sm { padding: 6px 11px; font-size: 12px; }

/* ============ STAT CARDS ============ */

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 28px; }
.stat-card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius);
  padding: 18px;
  position: relative;
  overflow: hidden;
}
.stat-card .stamp-corner {
  position: absolute; top: -14px; right: -14px;
  width: 60px; height: 60px;
  border-radius: 50%;
  opacity: 0.08;
}
.stat-card .num { font-family: var(--font-display); font-size: 30px; font-weight: 700; }
.stat-card .label { font-size: 12px; color: var(--text-muted-on-paper); margin-top: 2px; }
.stat-card.total .stamp-corner { background: var(--ink); }
.stat-card.pending .stamp-corner { background: var(--amber); }
.stat-card.pending .num { color: var(--amber); }
.stat-card.delivered .stamp-corner { background: var(--ledger-green); }
.stat-card.delivered .num { color: var(--ledger-green); }
.stat-card.return .stamp-corner { background: var(--stamp-red); }
.stat-card.return .num { color: var(--stamp-red); }

/* ============ CARD / SECTION ============ */

.card {
  background: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 18px;
}
.card h2 { font-size: 15px; margin-bottom: 14px; }

/* ============ FORM ============ */

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.fg label { display: block; font-size: 11.5px; color: var(--text-muted-on-paper); margin-bottom: 5px; font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.fg input, .fg select, .fg textarea {
  width: 100%;
  border: 1px solid rgba(0,0,0,0.14);
  border-radius: 7px;
  padding: 9px 11px;
  font-size: 13.5px;
  background: var(--paper-dim);
  color: var(--text-on-paper);
  outline: none;
}
.fg input:focus, .fg select:focus, .fg textarea:focus { border-color: var(--stamp-red); background: #fff; }

/* ============ TABLE ============ */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left; font-size: 10.5px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-muted-on-paper); padding: 10px 10px; border-bottom: 1.5px solid rgba(0,0,0,0.1);
}
tbody td { padding: 11px 10px; border-bottom: 1px solid rgba(0,0,0,0.06); }
tbody tr:hover { background: rgba(0,0,0,0.02); }

.pill { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 20px; font-size: 11px; font-weight: 700; }
.pill.pending { background: var(--amber-dim); color: var(--amber); }
.pill.booked { background: var(--blue-dim); color: var(--blue); }
.pill.delivered { background: var(--ledger-green-dim); color: var(--ledger-green); }
.pill.return, .pill.returned { background: var(--stamp-red-dim); color: var(--stamp-red); }
.pill.mo_received { background: var(--purple-dim); color: var(--purple); }
.pill.cod_released { background: rgba(22,32,44,0.08); color: var(--ink); }
.pill.source-tag { background: rgba(0,0,0,0.06); color: var(--text-muted-on-paper); font-weight: 600; }

.empty-state { text-align: center; padding: 50px 20px; color: var(--text-muted-on-paper); }
.empty-state .mark { font-size: 34px; margin-bottom: 10px; opacity: .5; }

/* ============ BULK TOOLBAR ============ */

.bulk-toolbar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--paper-dim); border: 1px solid rgba(0,0,0,0.08);
  border-radius: 8px; padding: 10px 14px; margin-bottom: 14px;
}
.bulk-toolbar .count { font-size: 12.5px; font-weight: 600; color: var(--text-muted-on-paper); }
.row-checkbox, .select-all-checkbox { width: 16px; height: 16px; cursor: pointer; }
.upload-summary { margin-top: 14px; }
.upload-summary .sum-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid rgba(0,0,0,0.06); font-size: 13px; }
.upload-summary .sum-row.ok { color: var(--ledger-green); }
.upload-summary .sum-row.warn { color: var(--amber); }
.upload-summary .sum-row.err { color: var(--stamp-red); }
.error-list { max-height: 220px; overflow-y: auto; margin-top: 10px; font-size: 12px; }
.error-list .err-item { padding: 6px 8px; border-bottom: 1px solid rgba(0,0,0,0.05); }
.error-list .err-item .row-num { font-family: var(--font-mono); color: var(--text-muted-on-paper); margin-right: 6px; }
.drop-zone {
  border: 2px dashed rgba(0,0,0,0.15); border-radius: 10px; padding: 34px 20px;
  text-align: center; cursor: pointer; transition: border-color .12s, background .12s;
}
.drop-zone:hover, .drop-zone.drag-over { border-color: var(--stamp-red); background: var(--stamp-red-dim); }
.drop-zone input[type=file] { display: none; }

/* ============ AUTH SCREEN ============ */

#auth-screen {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(700px 400px at 15% 10%, rgba(178,58,46,0.12), transparent 60%),
    radial-gradient(600px 400px at 85% 90%, rgba(47,111,78,0.10), transparent 55%),
    var(--ink);
  padding: 20px;
}
.auth-box {
  width: 100%; max-width: 380px;
  background: var(--paper);
  color: var(--text-on-paper);
  border-radius: 14px;
  padding: 36px 30px;
  box-shadow: 0 30px 70px -25px rgba(0,0,0,0.6);
}
.auth-box .stamp-mark {
  width: 52px; height: 52px; margin: 0 auto 14px;
  border: 2.5px solid var(--stamp-red); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--stamp-red); font-family: var(--font-display); font-weight: 700; font-size: 22px;
  transform: rotate(-8deg);
}
.auth-box h1 { text-align: center; font-size: 22px; }
.auth-box .sub { text-align: center; color: var(--text-muted-on-paper); font-size: 12.5px; margin: 4px 0 22px; }
.auth-box .fg { margin-bottom: 12px; }
.auth-tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.auth-tab {
  flex: 1; text-align: center; padding: 8px; border-radius: 7px; font-size: 12.5px; font-weight: 600;
  cursor: pointer; color: var(--text-muted-on-paper); border: 1px solid rgba(0,0,0,0.1);
}
.auth-tab.active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.auth-err { color: var(--stamp-red); font-size: 12px; margin-top: 8px; min-height: 16px; }
.google-btn {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px; border-radius: 8px; border: 1px solid rgba(0,0,0,0.15); background: #fff;
  font-size: 13px; font-weight: 600; cursor: pointer; margin-top: 10px;
}
.divider { display: flex; align-items: center; gap: 10px; margin: 16px 0; color: var(--text-muted-on-paper); font-size: 11px; }
.divider::before, .divider::after { content: ''; flex: 1; height: 1px; background: rgba(0,0,0,0.1); }

/* ============ BACK / MENU ROW ============ */
.nav-row { display: flex; gap: 8px; align-items: center; margin-bottom: 14px; }
.nav-row .menu-btn { display: none; }

/* ============ RESPONSIVE ============ */

@media (max-width: 820px) {
  #app.active { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 30% 0 0; z-index: 50; transform: translateX(-105%); transition: transform .2s; }
  .sidebar.open { transform: translateX(0); }
  .main { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .nav-row { position: sticky; top: 0; z-index: 5; background: var(--paper); padding: 6px 0; margin-top: -6px; }
  .nav-row .menu-btn { display: inline-flex; }
}

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