@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+Lao:wght@400;500;600;700&display=swap');

/* ─── Design Tokens ─────────────────────────────────────────── */
:root {
  --bg:           #f2f6f5; /* extremely comfortable warm clinical green-tinted light gray */
  --bg-2:         #ffffff;
  --bg-3:         #ebf1ef; /* soft light-sage/mint gray background tint */
  --card:         #ffffff;
  --card-border:  #e0e8e6; /* elegant thin mint-tinted gray border */
  --card-hover:   #f0f5f3;

  --text:         #1b2725; /* soft forest-green slate (charcoal slate green) - extremely comfortable to read */
  --text-2:       #485855; /* forest medium slate */
  --text-3:       #8a9c98; /* forest soft sage tertiary */

  --primary:      #0d9488; /* professional hospital emerald teal-green */
  --primary-glow: rgba(13, 148, 136, 0.08);
  --primary-dark: #0f766e;
  --primary-light: #f0fdfa; /* beautiful fresh minty selection highlight background */
  --accent:       #059669; /* active forest emerald green */
  --success:      #10b981;
  --danger:       #e11d48; /* pleasant rose-red danger accent */
  --warning:      #d97706; /* warm amber */

  --header-h:     62px;
  --radius:       12px;
  --radius-sm:    8px;
  --shadow:       0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.02);
  --shadow-lg:    0 10px 25px -5px rgba(0, 0, 0, 0.04), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --transition:   0.15s ease;

  --font: 'Noto Sans Lao', 'Inter', system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

/* ─── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ─── Header ─────────────────────────────────────────────────── */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  gap: 1rem;
  box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.app-header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #115e59; /* deep clinical teal */
  white-space: nowrap;
}

/* ─── Navigation ─────────────────────────────────────────────── */
.nav-links { display: flex; gap: 0.35rem; }

.nav-links a {
  color: var(--text-2);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--card-hover);
}

.nav-links a.active {
  color: var(--primary);
  background: var(--primary-light);
  border-color: rgba(37, 99, 235, 0.15);
  font-weight: 600;
}

.user-badge {
  font-size: 0.8rem;
  color: var(--text-2);
  background: var(--bg-3);
  border: 1px solid var(--card-border);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  white-space: nowrap;
  font-weight: 500;
}

/* ─── Buttons ────────────────────────────────────────────────── */
button, .btn {
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1;
}

button, .btn {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

button:hover, .btn:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

button:active, .btn:active { transform: translateY(0); }
button:disabled { opacity: 0.4; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

button.secondary, .btn.secondary {
  background: #ffffff;
  color: var(--text-2);
  border: 1px solid var(--card-border);
  box-shadow: none;
}
button.secondary:hover, .btn.secondary:hover {
  background: var(--card-hover);
  color: var(--text);
  box-shadow: none;
  border-color: #cbd5e1;
}

button.danger, .btn.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}
button.danger:hover, .btn.danger:hover {
  background: #dc2626;
  border-color: #dc2626;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.15);
}

/* ─── Form Controls ──────────────────────────────────────────── */
input, select {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.5rem 0.85rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

input:focus, select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

select option { background: #ffffff; color: var(--text); }

label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-2);
  display: block;
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ─── Layout & Cards ─────────────────────────────────────────── */
main { padding: 1.5rem 1.5rem 3rem; max-width: 100%; }

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: border-color var(--transition);
}

.card:hover { border-color: #cbd5e1; }

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: flex-end;
  margin-bottom: 1.25rem;
}

.page-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.page-title::before {
  content: '';
  width: 4px;
  height: 1.15em;
  background: var(--primary);
  border-radius: 4px;
  flex-shrink: 0;
}

.readonly-hint {
  font-size: 0.85rem;
  color: var(--text-2);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary-light);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

.loading {
  text-align: center;
  padding: 3rem;
  color: var(--text-3);
  font-size: 0.95rem;
}

.error-msg {
  color: var(--danger);
  font-size: 0.9rem;
  text-align: center;
  padding: 0.85rem;
  background: rgba(239, 68, 68, 0.05);
  border: 1px solid rgba(239, 68, 68, 0.15);
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
}

/* ─── Legend ─────────────────────────────────────────────────── */
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.75rem 0.35rem 0.4rem;
  background: #ffffff;
  border-radius: 100px;
  border: 1px solid var(--card-border);
  font-size: 0.8rem;
  color: var(--text-2);
  box-shadow: 0 1px 2px rgba(0,0,0,0.02);
  transition: all var(--transition);
}

.legend-item:hover {
  border-color: #cbd5e1;
  color: var(--text);
  transform: translateY(-1px);
}

.legend-swatch {
  width: 32px;
  height: 22px;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

/* ─── Schedule Grid ──────────────────────────────────────────── */
.schedule-wrap {
  overflow: auto;
  max-height: calc(100vh - 280px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

table.schedule-grid {
  border-collapse: collapse;
  font-size: 0.8rem;
  min-width: max-content;
  width: 100%;
}

.schedule-grid th,
.schedule-grid td {
  border: 1px solid #e2e8f0; /* Crisp grid borders as before */
  padding: 0.4rem 0.3rem;
  text-align: center;
  min-width: 34px;
  max-width: 42px;
}

.schedule-grid th {
  background: #f8fafc;
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-2);
  position: sticky;
  top: 0;
  z-index: 2;
  border-bottom: 2px solid #cbd5e1;
}

/* Sticky name column */
.schedule-grid th.col-name,
.schedule-grid td.col-name {
  min-width: 155px;
  max-width: 195px;
  text-align: left;
  padding-left: 0.75rem;
  position: sticky;
  left: 36px;
  background: #ffffff;
  z-index: 1;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-right: 2px solid #cbd5e1;
}

/* Sticky no column */
.schedule-grid th.col-no,
.schedule-grid td.col-no {
  min-width: 36px;
  max-width: 40px;
  position: sticky;
  left: 0;
  background: #f8fafc;
  z-index: 1;
  color: var(--text-3);
  font-size: 0.75rem;
  font-weight: 600;
}

.schedule-grid thead th.col-no,
.schedule-grid thead th.col-name {
  background: #f1f5f9;
  z-index: 4;
  border-bottom: 2px solid #cbd5e1;
}
.schedule-grid th.col-name { left: 36px; z-index: 3; }

/* Row hover */
.schedule-grid tbody tr:hover td { background: #f8fafc; }
.schedule-grid tbody tr:hover td.col-name { background: #ffffff; }
.schedule-grid tbody tr:hover td.col-no { background: #f1f5f9; }

/* Weekend highlights */
.schedule-grid th.weekend { color: #d97706; background: #fffbeb; }
.schedule-grid td.weekend { background: #fffbeb; }

/* Shift cells styling */
.schedule-grid td.shift-cell {
  font-weight: 700;
  font-size: 0.78rem;
  cursor: default;
  color: #0f172a !important; /* High contrast dark text on pastel cells */
  text-shadow: none; /* Removed contrast-reducing shadow */
  transition: filter var(--transition), box-shadow var(--transition);
}

.schedule-grid td.shift-cell.editable {
  cursor: pointer;
}

.schedule-grid td.shift-cell.editable:hover {
  filter: brightness(0.92);
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.15);
  position: relative;
  z-index: 1;
}

.schedule-grid td.empty-cell {
  background: transparent;
  color: transparent;
  cursor: default;
}

.schedule-grid td.empty-cell.editable {
  cursor: pointer;
}

.schedule-grid td.empty-cell.editable:hover {
  background: rgba(37, 99, 235, 0.12) !important;
  color: var(--primary) !important;
  outline: 1.5px dashed var(--primary);
  outline-offset: -1.5px;
}

/* Summary rows at the bottom */
.schedule-grid tr.summary-row td {
  background: var(--primary-light);
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--primary-dark);
  border-top: 1.5px solid #ccfbf1;
  border-bottom: 1.5px solid #ccfbf1;
}

.schedule-grid tr.summary-row:first-of-type td {
  background: #f0f6f4;
  color: var(--text-2);
  font-style: normal;
  border-top: 2px solid #cbd5e1;
}

.schedule-grid tr.summary-row td.col-name {
  background: var(--primary-light);
  font-style: italic;
  font-size: 0.78rem;
  border-right: 2px solid #ccfbf1;
}

/* ─── Login Page ─────────────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(13, 148, 136, 0.06), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(16, 185, 129, 0.03), transparent);
}

.login-card {
  width: 100%;
  max-width: 380px;
  padding: 2.5rem;
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.04), 0 1px 8px rgba(0,0,0,0.02);
  animation: fadeUp 0.3s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-card h1 {
  text-align: center;
  margin-bottom: 0.4rem;
  font-size: 1.45rem;
  font-weight: 700;
  color: #115e59; /* deep clinical teal */
}

.login-card .login-sub {
  text-align: center;
  color: var(--text-2);
  font-size: 0.875rem;
  margin-bottom: 1.75rem;
}

.login-card input {
  width: 100%;
  margin-bottom: 1rem;
  padding: 0.65rem 0.9rem;
}

.login-card button {
  width: 100%;
  padding: 0.75rem;
  font-size: 0.95rem;
  margin-top: 0.25rem;
  justify-content: center;
}

/* ─── Daily View ─────────────────────────────────────────────── */
.shift-groups { display: grid; gap: 1rem; }

.shift-group {
  border-left: 4px solid var(--primary);
  padding: 1rem 1.25rem;
  background: #ffffff;
  border-radius: 0 var(--radius) var(--radius) 0;
  border-top: 1px solid var(--card-border);
  border-right: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  box-shadow: var(--shadow);
  transition: border-left-color var(--transition);
}

.shift-group h3 { font-size: 1rem; margin-bottom: 0.65rem; font-weight: 600; color: var(--text); }

.shift-group ul { list-style: none; display: flex; flex-wrap: wrap; gap: 0.45rem; }

.shift-group li {
  background: #f1f5f9;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  border: 1px solid #e2e8f0;
  font-size: 0.85rem;
  color: var(--text);
  font-weight: 500;
}

/* ─── Summary & Standard Tables ─────────────────────────────── */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  background: #ffffff;
}

.data-table th,
.data-table td {
  border: none;
  border-bottom: 1px solid #f1f5f9;
  padding: 0.9rem 1.25rem; /* Roomier padding for modern elegant spacing */
  text-align: left;
  color: var(--text);
  transition: background-color var(--transition);
  vertical-align: middle;
}

.data-table th {
  background: #f8fafc;
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid #cbd5e1; /* Crisp bottom border for headers */
}

.data-table tbody tr {
  transition: background-color var(--transition);
}

.data-table tbody tr:hover td {
  background-color: #f8fafc;
}

/* Beautiful custom select dropdown styling inside tables */
.data-table select {
  font-family: inherit;
  font-size: 0.85rem;
  padding: 0.35rem 0.65rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-sm);
  color: var(--text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.data-table select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

/* Highlight the last column (Total count) ONLY on the summary page table */
.summary-table th:last-child,
.summary-table td:last-child {
  font-weight: 600;
  text-align: center;
  background: var(--primary-light);
  color: var(--primary);
  border-left: 1px dashed #99f6e4;
}

.summary-table tbody tr:hover td:last-child {
  background-color: #ccfbf1;
}

/* ─── Shift Picker Modal ─────────────────────────────────────── */
.shift-picker-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.3);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.shift-picker {
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.75rem;
  max-width: 440px;
  width: 100%;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  animation: scaleIn 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to   { opacity: 1; transform: scale(1); }
}

.shift-picker h3 {
  margin-bottom: 0.25rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.shift-picker-sub {
  color: var(--text-2);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--card-border);
}

.shift-picker-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.shift-picker-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.85rem 0.5rem;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 10px;
  color: #0f172a !important; /* High contrast dark text on pastel backgrounds */
  font-size: 0.75rem;
  min-height: 66px;
  transition: all var(--transition);
  text-shadow: none; /* Removed contrast-reducing shadow */
  box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.shift-picker-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  filter: brightness(0.95); /* Intuitive hover feedback on pastel backgrounds */
}

.shift-picker-btn.active {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25), 0 4px 12px rgba(0,0,0,0.06);
  transform: translateY(-2px);
  outline: 2.5px solid var(--primary); /* Thick clear selection border */
  outline-offset: -1px;
}

.shift-picker-btn strong {
  font-size: 1.15rem;
  font-weight: 700;
  color: #0f172a;
}

.shift-picker-btn span {
  font-size: 0.72rem;
  color: rgba(15, 23, 42, 0.65); /* Elegant secondary Lao text */
  font-weight: 500;
}

.shift-picker-actions {
  display: flex;
  gap: 0.6rem;
  justify-content: flex-end;
  padding-top: 1rem;
  border-top: 1px solid var(--card-border);
}

/* ─── Staff & Users lists ────────────────────────────────────── */
.staff-list { display: grid; gap: 0.6rem; }

.staff-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  transition: all var(--transition);
}

.staff-row:hover {
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.badge {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-admin {
  background: #f5f3ff;
  color: #7c3aed;
  border: 1px solid #ddd6fe;
}

.badge-user {
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid #bfdbfe;
}

/* ─── Responsive Design ──────────────────────────────────────── */
@media (max-width: 768px) {
  main { padding: 1rem 1rem 2.5rem; }
  .app-header { padding: 0 1rem; height: 56px; }
  .app-header h1 { font-size: 1rem; }
  .nav-links a { padding: 0.4rem 0.65rem; font-size: 0.8rem; }
  .shift-picker-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
  .app-header { flex-direction: column; height: auto; padding: 0.75rem 1rem; gap: 0.5rem; }
  .nav-links { width: 100%; justify-content: center; overflow-x: auto; padding-bottom: 0.25rem; }
  .nav-links a { padding: 0.35rem 0.55rem; font-size: 0.75rem; }
}