/* ─── Reset & tokens ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #0f1117;
  --surface: #181c24;
  --card:    #1e2330;
  --border:  #2a2f3e;
  --hover:   #252a38;
  --text:    #e2e8f0;
  --sub:     #94a3b8;
  --faint:   #4a5568;
  --accent:  #3b82f6;
  --green:   #22c55e;
  --red:     #ef4444;
  --amber:   #f59e0b;
  --mono:    'JetBrains Mono', 'Fira Code', monospace;
}

html, body { height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

.hidden { display: none !important; }

/* ─── Login ─── */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
}

.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 36px;
  width: 340px;
}

.login-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 28px;
  text-align: center;
}

.login-logo span { color: var(--accent); }

#login-form { display: flex; flex-direction: column; gap: 12px; }

#login-form input {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 10px 12px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 150ms;
}
#login-form input:focus { border-color: var(--accent); }

.login-err {
  font-size: 13px;
  color: var(--red);
  text-align: center;
  padding: 6px 0;
}

/* ─── Buttons ─── */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 120ms;
}
.btn-primary:hover { opacity: .88; }
.btn-primary:disabled { opacity: .5; cursor: default; }

.btn-ghost {
  background: none;
  color: var(--sub);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: color 120ms, border-color 120ms;
}
.btn-ghost:hover { color: var(--text); border-color: var(--sub); }
.btn-ghost:disabled { opacity: .5; cursor: default; }

/* ─── Top nav ─── */
.topnav {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  height: 52px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-brand { display: flex; align-items: baseline; gap: 6px; }
.brand-label { font-size: 16px; font-weight: 700; color: var(--text); }
.brand-sub { font-size: 12px; color: var(--accent); font-weight: 600; letter-spacing: .04em; }

.nav-tabs { display: flex; gap: 2px; }

.tab-btn {
  background: none;
  border: none;
  color: var(--sub);
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  border-radius: 6px;
  transition: background 120ms, color 120ms;
}
.tab-btn:hover { background: var(--hover); color: var(--text); }
.tab-btn.active { background: var(--card); color: var(--text); font-weight: 600; }

.nav-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.nav-user { font-size: 12px; color: var(--faint); }

/* ─── Tab panes ─── */
.tab-pane { display: none; padding: 24px; max-width: 1400px; margin: 0 auto; }
.tab-pane.active { display: block; }

/* ─── Pane header ─── */
.pane-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}
.pane-title { font-size: 20px; font-weight: 700; color: var(--text); }
.pane-sub { font-size: 13px; color: var(--sub); margin-top: 2px; }
.pane-actions { display: flex; gap: 8px; align-items: center; flex-shrink: 0; }

/* ─── Period toggle ─── */
.period-toggle {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 3px;
  width: fit-content;
}
.period-btn {
  background: none;
  border: none;
  border-radius: 6px;
  padding: 5px 16px;
  font-size: 13px;
  color: var(--sub);
  cursor: pointer;
  transition: background 120ms, color 120ms;
}
.period-btn.active { background: var(--card); color: var(--text); font-weight: 600; }

/* ─── Loading / status ─── */
.loading-msg { color: var(--sub); padding: 40px 0; text-align: center; font-size: 14px; }

.data-status {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 12px;
  color: var(--sub);
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.data-status-item { display: flex; gap: 6px; }
.ds-label { color: var(--faint); }
.ds-val { color: var(--text); font-family: var(--mono); }
.ds-warn { color: var(--amber); }
.ds-ok   { color: var(--green); }

/* ─── Total row ─── */
.total-row {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  margin-bottom: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
}

.total-metric { display: flex; flex-direction: column; gap: 2px; }
.tm-label { font-size: 10px; text-transform: uppercase; letter-spacing: .06em; color: var(--faint); font-weight: 600; }
.tm-value { font-size: 18px; font-weight: 700; color: var(--text); }
.tm-value.neg { color: var(--red); }
.tm-value.pos { color: var(--green); }
.tm-value.warn { color: var(--amber); }

/* ─── Per-store performance grid ─── */
.store-perf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 16px;
}

.store-perf-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}
.store-perf-card.inactive {
  opacity: .4;
  border-style: dashed;
}

.spc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.spc-code {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--accent);
  font-family: var(--mono);
  background: #1e3a6e;
  padding: 2px 7px;
  border-radius: 4px;
}
.spc-name { font-size: 14px; font-weight: 600; }
.spc-inactive { font-size: 12px; color: var(--faint); }

.spc-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
}
.spc-metric { display: flex; flex-direction: column; gap: 2px; }
.spm-label { font-size: 10px; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); }
.spm-value { font-size: 14px; font-weight: 600; }
.spm-value.neg  { color: var(--red); }
.spm-value.pos  { color: var(--green); }
.spm-value.warn { color: var(--amber); }
.spm-value.sub  { color: var(--sub); }

.spc-coverage {
  margin-top: 10px;
  font-size: 11px;
  color: var(--faint);
  display: flex;
  align-items: center;
  gap: 8px;
}
.coverage-bar {
  flex: 1;
  height: 3px;
  background: var(--border);
  border-radius: 2px;
}
.coverage-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--green);
  transition: width 400ms ease;
}
.coverage-fill.warn { background: var(--amber); }
.coverage-fill.bad  { background: var(--red); }

/* ─── Section cards ─── */
.section-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.section-title {
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-desc { font-size: 12px; color: var(--sub); margin-bottom: 12px; }

.collapsible-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--sub);
  padding: 4px;
  border-radius: 4px;
  transition: background 120ms;
}
.collapsible-toggle:hover { background: var(--hover); }
.chevron { display: inline-block; font-size: 14px; transition: transform 200ms; }

/* ─── Badges ─── */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 1px 8px;
  font-size: 11px;
  font-weight: 700;
  min-width: 22px;
}
.badge.warn { background: #7c3a001a; color: var(--amber); border: 1px solid #7c3a0033; }
.badge.err  { background: #7f1d1d1a; color: var(--red);   border: 1px solid #7f1d1d33; }

/* ─── Freshness strip ─── */
.freshness-strip {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  margin-bottom: 16px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 12px;
}
.fs-item { display: flex; gap: 8px; align-items: center; }
.fs-label { color: var(--faint); }
.fs-val   { color: var(--text); font-family: var(--mono); }
.fs-fresh { color: var(--green); }
.fs-stale { color: var(--amber); }
.fs-none  { color: var(--faint); font-style: italic; }

/* ─── Validation grid ─── */
.val-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
}
.val-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.val-label { font-size: 11px; color: var(--sub); }
.val-count { font-size: 18px; font-weight: 700; }
.val-count.ok   { color: var(--green); }
.val-count.warn { color: var(--amber); }
.val-count.err  { color: var(--red); }

/* ─── Tables ─── */
.table-wrap { overflow-x: auto; border-radius: 7px; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  white-space: nowrap;
}
.data-table th {
  background: var(--surface);
  padding: 8px 12px;
  text-align: left;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--faint);
  border-bottom: 1px solid var(--border);
}
.data-table td {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:hover { background: var(--hover); }

.mono { font-family: var(--mono); font-size: 12px; }
.store-chip {
  background: #1e3a6e;
  color: var(--accent);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 11px;
  font-weight: 700;
  font-family: var(--mono);
  letter-spacing: .05em;
}
.dev-pos { color: var(--red); }
.dev-neg { color: var(--green); }

.empty-msg { padding: 24px; text-align: center; color: var(--sub); font-size: 13px; }

/* ─── Issues content ─── */
.issues-section { margin-bottom: 16px; }
.issues-section h3 { font-size: 13px; font-weight: 600; color: var(--sub); margin-bottom: 8px; }
.issue-item {
  font-size: 12px;
  font-family: var(--mono);
  padding: 4px 8px;
  background: var(--surface);
  border-radius: 4px;
  margin-bottom: 4px;
  color: var(--amber);
}

/* ─── Files layout ─── */
.files-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.upload-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
}

.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  transition: border-color 150ms, background 150ms;
  margin: 12px 0;
}
.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--accent);
  background: #1e3a6e10;
}
.upload-icon { font-size: 28px; margin-bottom: 8px; }
.upload-label { font-size: 13px; color: var(--sub); }
.upload-link {
  color: var(--accent);
  cursor: pointer;
  text-decoration: underline;
}

.upload-result {
  padding: 10px 14px;
  border-radius: 7px;
  font-size: 13px;
  margin: 8px 0;
}
.upload-result.ok  { background: #14532d1a; border: 1px solid #14532d33; color: var(--green); }
.upload-result.err { background: #7f1d1d1a; border: 1px solid #7f1d1d33; color: var(--red); }

.file-list-title { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); margin: 16px 0 8px; }

.file-list { display: flex; flex-direction: column; gap: 4px; }
.file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--surface);
  border-radius: 6px;
  font-size: 12px;
}
.file-name { font-family: var(--mono); color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.file-date { color: var(--faint); flex-shrink: 0; margin-left: 8px; }
.file-empty { color: var(--faint); font-style: italic; padding: 8px 0; font-size: 13px; }

/* ─── Stores table ─── */
.stores-table .inactive-row { opacity: .45; }
.pip-ok  { color: var(--green); }
.pip-err { color: var(--faint); }
.ef-yes  { color: var(--green); font-size: 12px; }
.ef-no   { color: var(--faint); font-size: 12px; }

/* ─── Responsive ─── */
@media (max-width: 800px) {
  .files-layout { grid-template-columns: 1fr; }
  .store-perf-grid { grid-template-columns: 1fr; }
  .total-row { grid-template-columns: 1fr 1fr; }
  .topnav { padding: 0 12px; gap: 12px; }
  .tab-pane { padding: 16px; }
}