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

:root {
  --teal: #598472;       /* brand sage green, from merchetz-logo-03.png */
  --teal-dark: #151b24;  /* brand navy, from merchetz-logo-03.png */
  --teal-light: #e7ede9;
  --amber: #d97706;
  --bg: #f5f7f7;
  --card: #ffffff;
  --ink: #14251f;
  --muted: #6b7c78;
  --border: #e3e9e7;
  --pos: #15803d;
  --neg: #dc2626;
}

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  min-height: 100vh;
}

.status-bar {
  background: linear-gradient(120deg, var(--teal-dark), var(--teal));
  color: white;
  padding: 10px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.app-header {
  background: white;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.brand-logo { height: 56px; width: auto; display: block; }
.brand-sub { font-size: 11px; color: #d3f5ef; text-transform: uppercase; letter-spacing: 1px; }

.header-right { display: flex; align-items: center; gap: 16px; }
.last-synced { font-size: 12px; color: #d3f5ef; }
.sync-btn {
  background: var(--amber);
  color: white;
  border: none;
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
}
.sync-btn:hover { background: #b45f04; }
.sync-btn:disabled { opacity: .6; cursor: default; }
.logout-link { color: white; font-size: 12px; text-decoration: none; font-weight: 600; }
.logout-link:hover { text-decoration: underline; }

.sync-msg { font-size: 12px; margin-top: 6px; }
.sync-msg.ok { color: #bbf7d0; }
.sync-msg.err { color: #fecaca; }

.tab-bar {
  background: white;
  border-bottom: 1px solid var(--border);
  display: flex;
  padding: 0 32px;
}
.tab {
  padding: 14px 22px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 3px solid transparent;
}
.tab:hover { color: var(--teal-dark); }
.tab.active { color: var(--teal-dark); border-bottom-color: var(--teal); }

.main { padding: 24px 32px 60px; max-width: 1200px; margin: 0 auto; }
.view { display: none; }
.view.active { display: block; }

.summary-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.summary-card {
  background: var(--card);
  border-radius: 12px;
  padding: 16px 18px;
  border: 1px solid var(--border);
}
.summary-lbl { font-size: 10px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 6px; }
.summary-val { font-size: 20px; font-weight: 700; }
.summary-sub { font-size: 11px; color: var(--muted); margin-top: 3px; }

.period-nav {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.nav-btn {
  background: white;
  border: 1px solid var(--border);
  color: var(--teal-dark);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-btn:hover { background: var(--teal-light); }
.nav-btn:disabled { opacity: .35; cursor: default; }
.period-select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  background: white;
  min-width: 180px;
}

.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.kpi {
  background: var(--card);
  border-radius: 12px;
  padding: 16px 18px;
  border-left: 3px solid var(--border);
}
.kpi.bl { border-left-color: #3b82f6; }
.kpi.or { border-left-color: var(--amber); }
.kpi.gr { border-left-color: var(--teal); }
.kpi.rd { border-left-color: #ef4444; }
.kpi-lbl { font-size: 10px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; margin-bottom: 6px; }
.kpi-val { font-size: 21px; font-weight: 700; color: var(--ink); }
.kpi-val.pos { color: var(--pos); }
.kpi-val.neg { color: var(--neg); }
.kpi-sub { font-size: 11px; color: var(--muted); margin-top: 3px; }

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 20px 22px;
  border: 1px solid var(--border);
  margin-bottom: 18px;
}
.card-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--teal-dark);
  text-transform: uppercase;
  letter-spacing: .8px;
  margin-bottom: 16px;
}
.chart-wrap { position: relative; height: 280px; }

.pos { color: var(--pos); }
.neg { color: var(--neg); }

.two-col {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 16px;
}
@media (max-width: 900px) {
  .two-col { grid-template-columns: 1fr; }
}

.seller-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.seller-heading {
  font-size: 10px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .7px;
  margin-bottom: 8px;
}
.ar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid #f1f5f4;
  font-size: 13px;
  gap: 10px;
}
.ar:last-child { border-bottom: none; }
.an { color: #374151; }
.an.detail-group { font-weight: 700; color: var(--teal-dark); }
.aa { font-weight: 700; color: var(--ink); white-space: nowrap; }

input[type="month"].period-select,
input[type="date"].period-select {
  cursor: pointer;
}

.chart-hint {
  font-size: 11px;
  color: var(--muted);
  margin-top: -10px;
  margin-bottom: 12px;
}

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 37, 31, 0.5);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-backdrop.open { display: flex; }
.modal-box {
  background: white;
  border-radius: 12px;
  width: 560px;
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-title { font-size: 15px; font-weight: 700; color: var(--teal-dark); flex: 1; }
.modal-back {
  background: none;
  border: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--teal-dark);
  cursor: pointer;
  padding: 4px 6px 4px 0;
  white-space: nowrap;
}
.modal-back:hover { text-decoration: underline; }
.modal-close {
  background: none;
  border: none;
  font-size: 16px;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
}
.modal-close:hover { color: var(--ink); }
.modal-body { padding: 10px 20px 20px; overflow-y: auto; }

.detail-row { cursor: pointer; }
.detail-row:hover { background: var(--teal-light); border-radius: 6px; }

.tx-row {
  display: grid;
  grid-template-columns: 82px 70px 1fr 80px;
  gap: 10px;
  align-items: baseline;
  padding: 7px 0;
  border-bottom: 1px solid #f1f5f4;
  font-size: 12px;
}
.tx-row:last-child { border-bottom: none; }
.tx-date { color: var(--muted); white-space: nowrap; }
.tx-type { color: var(--muted); }
.tx-name { color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tx-memo { color: var(--muted); }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(120deg, var(--teal-dark), var(--teal));
}
.login-card {
  background: white;
  border-radius: 14px;
  padding: 36px 40px;
  width: 320px;
  max-width: 90vw;
  box-shadow: 0 10px 40px rgba(0,0,0,.2);
}
.login-logo { display: block; width: 100%; max-width: 220px; margin: 0 auto 14px; }
.login-card p { font-size: 12px; color: var(--muted); margin-bottom: 20px; text-align: center; }
.login-card input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 14px;
}
.login-card button {
  width: 100%;
  padding: 10px;
  background: var(--teal);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.login-card button:hover { background: var(--teal-dark); }
.login-err { color: var(--neg); font-size: 12px; margin-bottom: 10px; }

.loading { text-align: center; padding: 60px; color: var(--muted); }

@media (max-width: 640px) {
  .status-bar { padding: 8px 14px; }
  .header-right { gap: 10px; }
  .last-synced { font-size: 10px; }
  .sync-btn { padding: 7px 12px; font-size: 12px; }

  .app-header { padding: 12px 14px; }
  .brand-logo { height: 38px; }

  .tab-bar { padding: 0 14px; }
  .tab { padding: 12px 14px; font-size: 12px; }

  .main { padding: 16px 14px 40px; }

  .summary-row, .kpi-row { grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 10px; }
  .kpi-val, .summary-val { font-size: 17px; }

  .period-nav { gap: 8px; }
  .period-select { min-width: 0; flex: 1; font-size: 13px; }

  .card { padding: 16px; }
  .chart-wrap { height: 220px; }

  .seller-cols { grid-template-columns: 1fr; gap: 20px; }

  .modal-box { width: 100%; max-width: 96vw; max-height: 88vh; }
  .modal-header { padding: 12px 14px; }
  .modal-body { padding: 8px 14px 14px; }

  .tx-row {
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    font-size: 11px;
    row-gap: 3px;
    column-gap: 8px;
  }
  .tx-name { grid-column: 1 / 4; grid-row: 1; white-space: normal; }
  .tx-date { grid-column: 1; grid-row: 2; }
  .tx-type { grid-column: 2; grid-row: 2; justify-self: start; }
  .tx-row .aa { grid-column: 3; grid-row: 2; justify-self: end; }

  .login-card { padding: 28px 24px; }
}