Initial commit: HK Planner app

Housekeeping workload and hours planning app — port of the WP hotel
housekeeping hours calculator plugin. 7-day occupancy planner with
Newbook PMS integration, staff rota, time requirements, and pickup tracking.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/index.css

@@ -0,0 +1,155 @@
+*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
+
+:root {
+  --navy:        #1a1a2e;
+  --navy-dark:   #0f0f20;
+  --gold:        #c9a84c;
+  --gold-light:  #e8c96d;
+  --surface:     rgba(255,255,255,0.07);
+  --surface-2:   rgba(255,255,255,0.08);
+  --text:        rgba(255,255,255,0.88);
+  --text-muted:  rgba(255,255,255,0.48);
+
+  --body-bg:     #f4f5f7;
+  --card-bg:     #ffffff;
+  --card-border: #e4e8ee;
+  --text-dark:   #1e293b;
+  --text-mid:    #64748b;
+  --shadow-sm:   0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
+  --shadow-md:   0 4px 12px rgba(0,0,0,0.08);
+
+  --danger:      #dc2626;
+  --success:     #16a34a;
+  --warning:     #d97706;
+  --hk-green:    #2d6a4f;
+  --radius:      10px;
+  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+}
+
+body {
+  background: var(--body-bg);
+  color: var(--text-dark);
+  font-family: var(--font);
+  min-height: 100dvh;
+}
+
+button { cursor: pointer; font-family: inherit; }
+input, textarea, select { font-family: inherit; }
+
+/* Planning tables */
+.hk-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 0.82rem;
+  table-layout: fixed;
+}
+.hk-table th {
+  background: var(--navy);
+  color: var(--text);
+  padding: 0.45rem 0.5rem;
+  text-align: center;
+  font-weight: 600;
+  white-space: nowrap;
+}
+.hk-table th.col-label {
+  text-align: left;
+  width: 140px;
+}
+.hk-table td {
+  padding: 0.35rem 0.5rem;
+  border-bottom: 1px solid var(--card-border);
+  text-align: center;
+  vertical-align: middle;
+}
+.hk-table td.col-label {
+  text-align: left;
+  font-weight: 600;
+  color: var(--text-dark);
+  background: var(--card-bg);
+}
+.hk-table tfoot td {
+  font-weight: 600;
+  background: #f8fafc;
+}
+
+/* Row accent colours for summary table */
+.row-depart { background: #fff8f0; }
+.row-stay   { background: #f0f7ff; }
+.row-arrive { background: #f0fff5; }
+.row-depart td, .row-stay td, .row-arrive td { border-bottom: none; }
+.row-group-last td { border-bottom: 2px solid var(--card-border) !important; }
+
+/* Pickup tag */
+.pickup-tag {
+  color: var(--hk-green);
+  font-size: 0.75rem;
+  font-weight: 600;
+}
+
+/* Delta badges */
+.delta-new  { color: var(--success); font-size: 0.72rem; }
+.delta-canc { color: var(--danger);  font-size: 0.72rem; }
+
+/* Pickup +/- controls */
+.pickup-ctrl {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 3px;
+  margin-top: 2px;
+}
+.pickup-btn {
+  background: none;
+  border: 1px solid var(--card-border);
+  border-radius: 3px;
+  padding: 0 5px;
+  line-height: 1.4;
+  font-size: 0.8rem;
+  color: var(--text-mid);
+}
+.pickup-btn:disabled { opacity: 0.35; cursor: not-allowed; }
+.pickup-num { min-width: 16px; text-align: center; font-size: 0.8rem; font-weight: 600; }
+
+/* Diff cells */
+.diff-ok    { color: var(--success); font-weight: 600; }
+.diff-under { color: var(--danger);  font-weight: 600; }
+.diff-over  { color: var(--warning); font-weight: 600; }
+
+/* Numeric inputs in tables */
+.hk-num-input {
+  width: 60px;
+  border: 1px solid var(--card-border);
+  border-radius: 4px;
+  padding: 0.3rem 0.4rem;
+  font-size: 0.82rem;
+  text-align: center;
+  background: var(--body-bg);
+  color: var(--text-dark);
+}
+.hk-num-input:focus {
+  outline: 2px solid var(--hk-green);
+  border-color: transparent;
+}
+
+/* Text inputs in tables */
+.hk-text-input {
+  border: 1px solid var(--card-border);
+  border-radius: 4px;
+  padding: 0.3rem 0.5rem;
+  font-size: 0.82rem;
+  background: var(--body-bg);
+  color: var(--text-dark);
+  width: 100%;
+}
+.hk-text-input:focus {
+  outline: 2px solid var(--hk-green);
+  border-color: transparent;
+}
+
+/* Section wrapper with horizontal scroll */
+.table-scroll {
+  overflow-x: auto;
+  border-radius: var(--radius);
+  border: 1px solid var(--card-border);
+  box-shadow: var(--shadow-sm);
+}