:root {
  --navy: #0f2340;
  --navy-dark: #0a1930;
  --blue: #2563eb;
  --violet: #7c3aed;
  --green: #16a34a;
  --amber: #d97706;
  --slate: #475569;
  --red: #dc2626;
  --bg: #f4f6fb;
  --card: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --radius: 12px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: var(--navy);
  color: #fff;
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  gap: 24px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--blue); color: #fff; font-weight: 700;
  display: flex; align-items: center; justify-content: center; font-size: 1.1rem;
}
.brand strong { display: block; font-size: 0.95rem; }
.brand small { color: #94a3b8; font-size: 0.72rem; }

.sidebar nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav-link {
  color: #cbd5e1; text-decoration: none; padding: 10px 12px; border-radius: 8px;
  font-size: 0.9rem; transition: background 0.15s, color 0.15s;
}
.nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.nav-link.active { background: var(--blue); color: #fff; font-weight: 600; }

.source-status { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 8px; background: rgba(255,255,255,0.06); }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); flex-shrink: 0; }
.source-status strong { display: block; font-size: 0.82rem; }
.source-status small { color: #94a3b8; font-size: 0.72rem; }

.logout-link { text-align: center; }

/* Main */
main { flex: 1; padding: 28px 32px 60px; max-width: 1400px; }

.page-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; color: var(--text-muted); font-weight: 700; margin: 0 0 4px; }
.page-header h1 { margin: 0; font-size: 1.6rem; }
.subtitle { margin: 4px 0 0; color: var(--text-muted); font-size: 0.9rem; }
.header-actions { display: flex; align-items: center; gap: 12px; }
.load-state { font-size: 0.8rem; color: var(--text-muted); }

.message-area:empty { display: none; }
.message { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.88rem; }
.message-success { background: #dcfce7; color: #166534; }
.message-error { background: #fee2e2; color: #991b1b; }
.message-info { background: #dbeafe; color: #1e3a8a; }

/* Cards */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 18px; }
.metric-card {
  background: var(--card); border-radius: var(--radius); padding: 16px 18px;
  border-left: 4px solid var(--slate); box-shadow: 0 1px 2px rgba(15,23,42,0.06);
}
.metric-card span { display: block; font-size: 0.78rem; color: var(--text-muted); font-weight: 600; }
.metric-card strong { display: block; font-size: 1.4rem; margin: 4px 0; }
.metric-card small { color: var(--text-muted); font-size: 0.76rem; }
.accent-blue { border-left-color: var(--blue); }
.accent-violet { border-left-color: var(--violet); }
.accent-green { border-left-color: var(--green); }
.accent-amber { border-left-color: var(--amber); }
.accent-slate { border-left-color: var(--slate); }

.melon-balances { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 18px; }
.melon-balances article {
  background: var(--card); border-radius: var(--radius); padding: 14px 16px;
  box-shadow: 0 1px 2px rgba(15,23,42,0.06);
}
.melon-balances article span { display: block; font-size: 0.76rem; color: var(--text-muted); }
.melon-balances article strong { font-size: 1.15rem; }
.melon-balances article.total { background: var(--navy); color: #fff; }
.melon-balances article.total span { color: #cbd5e1; }

.pending-quick {
  width: 100%; display: flex; justify-content: space-between; align-items: center;
  background: #fff7ed; border: 1px solid #fed7aa; border-radius: var(--radius);
  padding: 14px 18px; margin-bottom: 24px; cursor: pointer; font-family: inherit;
}
.pending-quick strong { display: block; color: var(--amber); }
.pending-quick small { color: var(--text-muted); font-size: 0.78rem; }
.pending-values { text-align: right; }
.pending-values strong { color: var(--amber); }
.pending-values b { display: block; font-size: 1.1rem; }

/* Panels */
.panel {
  background: var(--card); border-radius: var(--radius); padding: 22px 24px;
  margin-bottom: 24px; box-shadow: 0 1px 2px rgba(15,23,42,0.06);
}
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 18px; flex-wrap: wrap; }
.section-heading h2 { margin: 2px 0 0; font-size: 1.2rem; }
.pill { padding: 4px 12px; border-radius: 999px; font-size: 0.76rem; font-weight: 600; }
.pill.neutral { background: #e2e8f0; color: var(--slate); }
.pill.success { background: #dcfce7; color: #166534; }

/* Forms */
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; }
.form-grid label { display: flex; flex-direction: column; gap: 6px; font-size: 0.82rem; font-weight: 600; color: var(--slate); }
.form-grid label.wide { grid-column: 1 / -1; }
input, select, textarea, button { font-family: inherit; }
input[type="text"], input[type="date"], input[type="number"], input[type="search"], input[type="password"], select, textarea {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 0.9rem; background: #fff; color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--blue); outline-offset: 1px; }
textarea { resize: vertical; }
input[readonly] { background: #f1f5f9; color: var(--text-muted); cursor: not-allowed; }

.form-warnings p { color: var(--red); font-size: 0.82rem; margin: 4px 0; }

.movement-preview {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px;
  background: #f8fafc; border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 16px; margin: 16px 0;
}
.movement-preview span { display: block; font-size: 0.72rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.movement-preview strong { font-size: 1.05rem; }
.preview-detail { grid-column: 1 / -1; }
.preview-detail p { margin: 4px 0 0; font-size: 0.85rem; color: var(--slate); }

.form-actions { display: flex; gap: 10px; margin-top: 18px; flex-wrap: wrap; }

.button {
  border: none; border-radius: 8px; padding: 10px 18px; font-size: 0.88rem; font-weight: 600;
  cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; justify-content: center;
}
.button.primary { background: var(--blue); color: #fff; }
.button.primary:hover { background: #1d4ed8; }
.button.secondary { background: #e2e8f0; color: var(--text); }
.button.secondary:hover { background: #cbd5e1; }
.button.ghost { background: transparent; color: var(--slate); border: 1px solid var(--border); }
.button.ghost:hover { background: #f1f5f9; }
.button.danger-button { background: var(--red); color: #fff; }
.button.danger-button:hover { background: #b91c1c; }
.button.small { padding: 5px 10px; font-size: 0.76rem; }

/* Filters */
.filters, .report-filters { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 18px; }
.filters label, .report-filters label { display: flex; flex-direction: column; gap: 4px; font-size: 0.78rem; font-weight: 600; color: var(--slate); }
.filters label.search { flex: 1; min-width: 200px; }
.filters select, .filters input, .report-filters select, .report-filters input { min-width: 130px; }

/* Table */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th { text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--border); color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.03em; }
td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:hover td { background: #f8fafc; }
.empty { text-align: center; color: var(--text-muted); padding: 24px; }

.sort-button {
  background: none; border: none; font: inherit; color: inherit; cursor: pointer; padding: 0;
  text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.03em; font-weight: 700;
}
.sort-button.active { color: var(--blue); }
.sort-button.sub-sort { margin-left: 8px; font-weight: 500; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 0.76rem; font-weight: 600; }
.badge-ok { background: #dcfce7; color: #166534; }
.badge-pending { background: #fef3c7; color: #92400e; }

.actions-cell { white-space: nowrap; display: flex; gap: 6px; }

/* Reports */
.report-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 18px; }
.report-summary article { background: #f8fafc; border-radius: var(--radius); padding: 14px 16px; }
.report-summary article span { display: block; font-size: 0.75rem; color: var(--text-muted); }
.report-summary article strong { font-size: 1.15rem; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(15,23,42,0.5);
  display: flex; align-items: center; justify-content: center; padding: 20px; z-index: 100;
}
.modal-backdrop[hidden] { display: none; }
.write-modal { background: #fff; border-radius: var(--radius); padding: 24px; max-width: 480px; width: 100%; }
.delete-description { background: #f8fafc; border-radius: 8px; padding: 12px 14px; margin: 12px 0; font-size: 0.85rem; white-space: pre-wrap; }

/* Login */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--navy); }
.login-card { background: #fff; border-radius: var(--radius); padding: 32px; width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 16px; }
.login-card h1 { margin: 0; font-size: 1.3rem; }
.login-card form { display: flex; flex-direction: column; gap: 14px; }
.login-card label { display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; font-weight: 600; color: var(--slate); }
.login-error { color: var(--red); font-size: 0.85rem; margin: 0; }

@media (max-width: 900px) {
  body { flex-direction: column; }
  .sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; }
  .sidebar nav { flex-direction: row; flex-wrap: wrap; }
  main { padding: 20px; }
}