/* ============================================
   PM-Master · Design System (v2)
   ============================================ */

:root {
  /* Colors */
  --c-bg:          #f6f8fb;
  --c-surface:     #ffffff;
  --c-border:      #e5e9f0;
  --c-border-strong:#d1d5db;
  --c-text:        #0f172a;
  --c-text-muted:  #64748b;
  --c-text-light:  #94a3b8;

  --c-primary:     #2563eb;
  --c-primary-dark:#1e40af;
  --c-primary-soft:#eff4ff;

  --c-success:     #10b981;
  --c-success-soft:#ecfdf5;
  --c-warning:     #f59e0b;
  --c-warning-soft:#fffbeb;
  --c-danger:      #ef4444;
  --c-danger-soft: #fef2f2;
  --c-info:        #0ea5e9;
  --c-info-soft:   #f0f9ff;

  /* Sizes */
  --sidebar-w:     240px;
  --navbar-h:      60px;

  --radius-sm: 6px;
  --radius:    10px;
  --radius-lg: 14px;

  --shadow-sm: 0 1px 2px rgba(15,23,42,.04);
  --shadow:    0 2px 4px rgba(15,23,42,.06), 0 1px 2px rgba(15,23,42,.04);
  --shadow-lg: 0 10px 24px rgba(15,23,42,.08), 0 2px 6px rgba(15,23,42,.04);

  --t-fast: .15s ease;
  --t-med:  .25s ease;
}

/* ============================================
   Base
   ============================================ */
html, body {
  font-family: "Prompt", system-ui, -apple-system, "Segoe UI", "Sarabun", sans-serif;
  font-size: 14.5px;
  color: var(--c-text);
  background: var(--c-bg);
  letter-spacing: 0;
}
body { margin: 0; }
h1,h2,h3,h4,h5,h6 { font-weight: 600; letter-spacing: -.01em; }

a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-dark); }
code { background:#eef2ff; color:#3730a3; padding: 1px 5px; border-radius: 4px; font-size: .88em; }

/* ============================================
   Layout: Navbar + Sidebar + Main
   ============================================ */
.app-navbar {
  height: var(--navbar-h);
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
  position: sticky; top: 0; z-index: 1020;
  display: flex; align-items: center;
  padding: 0 1.25rem;
}
.app-brand {
  display: flex; align-items: center; gap: .6rem;
  font-weight: 700; color: var(--c-text);
  width: calc(var(--sidebar-w) - 20px);
  font-size: 1.05rem;
}
.app-brand-icon {
  width: 34px; height: 34px; border-radius: 8px;
  background: linear-gradient(135deg, var(--c-primary), #7c3aed);
  color: #fff; display: grid; place-items: center;
}
.app-navbar-tools { margin-left: auto; display: flex; align-items: center; gap: .5rem; }

.user-pill {
  display: inline-flex; align-items: center; gap: .55rem;
  padding: .3rem .7rem .3rem .4rem;
  background: var(--c-primary-soft);
  border-radius: 99px;
  color: var(--c-primary-dark);
  font-weight: 500; font-size: .88rem;
}
.user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--c-primary); color: #fff;
  display: grid; place-items: center;
  font-size: .8rem; font-weight: 600;
}

.nav-icon-btn {
  width: 38px; height: 38px; border-radius: 8px;
  display: inline-grid; place-items: center;
  color: var(--c-text-muted); transition: var(--t-fast);
  background: transparent; border: 0;
}
.nav-icon-btn:hover { background: var(--c-primary-soft); color: var(--c-primary); }

/* Sidebar */
.app-sidebar {
  position: fixed; left: 0; top: var(--navbar-h);
  width: var(--sidebar-w); height: calc(100vh - var(--navbar-h));
  background: var(--c-surface);
  border-right: 1px solid var(--c-border);
  overflow-y: auto;
  padding: 1rem .75rem;
  z-index: 1010;
}
.app-sidebar .nav-section {
  padding: 1rem .6rem .4rem;
  font-size: .72rem; color: var(--c-text-light);
  text-transform: uppercase; letter-spacing: .08em; font-weight: 600;
}
.app-sidebar .nav-section:first-child { padding-top: .25rem; }
.app-sidebar a.nav-link {
  display: flex; align-items: center; gap: .65rem;
  padding: .55rem .75rem;
  border-radius: var(--radius-sm);
  color: var(--c-text-muted);
  font-weight: 500; font-size: .92rem;
  transition: var(--t-fast);
  margin-bottom: 2px;
}
.app-sidebar a.nav-link i { font-size: 1.05rem; width: 20px; text-align: center; }
.app-sidebar a.nav-link:hover { background: var(--c-primary-soft); color: var(--c-primary); }
.app-sidebar a.nav-link.active {
  background: linear-gradient(90deg, var(--c-primary) 0%, #3b82f6 100%);
  color: #fff; box-shadow: var(--shadow-sm);
}

.app-main {
  margin-left: var(--sidebar-w);
  padding: 1.5rem 2rem 3rem;
  min-height: calc(100vh - var(--navbar-h));
}

@media (max-width: 991.98px) {
  .app-sidebar { transform: translateX(-100%); transition: transform var(--t-med); }
  .app-sidebar.is-open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .app-main { margin-left: 0; padding: 1rem; }
  .app-brand { width: auto; }
}

.sidebar-backdrop {
  display: none; position: fixed; inset: var(--navbar-h) 0 0 0;
  background: rgba(15,23,42,.4); z-index: 1005;
}
.sidebar-backdrop.is-on { display: block; }

/* ============================================
   Page header
   ============================================ */
.page-header {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 1rem; margin-bottom: 1.25rem;
}
.page-title { margin: 0; font-size: 1.45rem; font-weight: 600; }
.page-title .icon-wrap {
  display: inline-grid; place-items: center;
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--c-primary-soft); color: var(--c-primary);
  margin-right: .5rem; vertical-align: middle;
}
.page-subtitle { color: var(--c-text-muted); font-size: .9rem; margin-top: .15rem; }

/* ============================================
   Buttons
   ============================================ */
.btn {
  font-weight: 500; border-radius: var(--radius-sm);
  padding: .4rem .85rem; font-size: .92rem;
  display: inline-flex; align-items: center; gap: .4rem;
  transition: var(--t-fast);
  border: 1px solid transparent;
}
.btn-sm { padding: .25rem .55rem; font-size: .82rem; }
.btn-lg { padding: .55rem 1.2rem; font-size: 1rem; }

.btn-primary         { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.btn-primary:hover   { background: var(--c-primary-dark); border-color: var(--c-primary-dark); color: #fff; box-shadow: 0 3px 8px rgba(37,99,235,.25); }

.btn-success         { background: var(--c-success); border-color: var(--c-success); color: #fff; }
.btn-success:hover   { background: #059669; border-color: #059669; color: #fff; }
.btn-danger          { background: var(--c-danger); border-color: var(--c-danger); color: #fff; }
.btn-danger:hover    { background: #dc2626; border-color: #dc2626; color: #fff; }

.btn-outline-primary { background: transparent; border-color: var(--c-border-strong); color: var(--c-text); }
.btn-outline-primary:hover { background: var(--c-primary-soft); border-color: var(--c-primary); color: var(--c-primary); }
.btn-outline-secondary{ background: transparent; border-color: var(--c-border-strong); color: var(--c-text-muted); }
.btn-outline-secondary:hover { background: var(--c-bg); color: var(--c-text); }
.btn-outline-danger  { background: transparent; border-color: var(--c-border-strong); color: var(--c-danger); }
.btn-outline-danger:hover { background: var(--c-danger-soft); border-color: var(--c-danger); }

.btn-secondary       { background: #e2e8f0; border-color: #e2e8f0; color: var(--c-text); }
.btn-secondary:hover { background: #cbd5e1; color: var(--c-text); }

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}
.card-header {
  background: transparent;
  border-bottom: 1px solid var(--c-border);
  padding: .85rem 1.1rem;
  font-weight: 600;
  font-size: .95rem;
  display: flex; align-items: center; justify-content: space-between; gap: .5rem;
}
.card-body { padding: 1.1rem; }
.card-footer {
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  padding: .6rem 1.1rem; font-size: .82rem;
  color: var(--c-text-muted);
}

/* KPI cards */
.kpi {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.2rem;
  display: flex; align-items: center; gap: 1rem;
  transition: var(--t-fast);
  position: relative; overflow: hidden;
}
.kpi:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.kpi-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  border-radius: 12px; display: grid; place-items: center;
  font-size: 1.35rem;
}
.kpi-label { font-size: .78rem; color: var(--c-text-muted); text-transform: uppercase; letter-spacing: .05em; font-weight: 500; }
.kpi-value { font-size: 1.65rem; font-weight: 700; line-height: 1.1; margin-top: .1rem; }
.kpi-sub   { font-size: .8rem; color: var(--c-text-light); margin-top: .15rem; }

.kpi.primary .kpi-icon { background: var(--c-primary-soft); color: var(--c-primary); }
.kpi.success .kpi-icon { background: var(--c-success-soft); color: var(--c-success); }
.kpi.warning .kpi-icon { background: var(--c-warning-soft); color: var(--c-warning); }
.kpi.danger  .kpi-icon { background: var(--c-danger-soft);  color: var(--c-danger); }
.kpi.info    .kpi-icon { background: var(--c-info-soft);    color: var(--c-info); }
.kpi.violet  .kpi-icon { background: #f5f3ff; color:#7c3aed; }

/* ============================================
   Tables
   ============================================ */
.table {
  width: 100%; margin: 0;
  border-collapse: separate; border-spacing: 0;
  font-size: .92rem;
}
.table thead th {
  background: var(--c-bg);
  color: var(--c-text-muted);
  font-weight: 600; font-size: .78rem;
  text-transform: uppercase; letter-spacing: .05em;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--c-border);
  white-space: nowrap;
}
.table tbody td {
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--c-border);
  vertical-align: middle;
}
.table tbody tr:hover { background: #fafbfc; }
.table tbody tr:last-child td { border-bottom: 0; }

.table-sm thead th { padding: .5rem .75rem; }
.table-sm tbody td { padding: .5rem .75rem; }

/* ============================================
   Status pills / badges
   ============================================ */
.pill {
  display: inline-flex; align-items: center; gap: .3rem;
  padding: .2rem .55rem;
  border-radius: 99px;
  font-size: .75rem; font-weight: 600;
  line-height: 1.3; white-space: nowrap;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill-primary { background: var(--c-primary-soft); color: var(--c-primary-dark); }
.pill-success { background: var(--c-success-soft); color: #065f46; }
.pill-warning { background: var(--c-warning-soft); color: #92400e; }
.pill-danger  { background: var(--c-danger-soft);  color: #991b1b; }
.pill-info    { background: var(--c-info-soft);    color: #075985; }
.pill-gray    { background: #f1f5f9; color: #475569; }

/* Re-style legacy Bootstrap badge */
.badge { font-weight: 600; padding: .3em .55em; font-size: .72rem; border-radius: 99px; }

/* ============================================
   Forms
   ============================================ */
.form-label { font-size: .85rem; font-weight: 500; color: var(--c-text); margin-bottom: .3rem; }
.form-control, .form-select {
  border-radius: var(--radius-sm); border-color: var(--c-border-strong);
  padding: .45rem .7rem; font-size: .92rem;
  transition: var(--t-fast);
}
.form-control:focus, .form-select:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.form-select { background-position: right .6rem center; }
.form-text { font-size: .8rem; color: var(--c-text-muted); }

.form-section-title {
  font-size: .78rem; font-weight: 600; color: var(--c-text-muted);
  text-transform: uppercase; letter-spacing: .06em;
  margin: 1rem 0 .5rem; padding-top: 1rem;
  border-top: 1px dashed var(--c-border);
}
.form-section-title:first-child { border-top: 0; padding-top: 0; margin-top: 0; }

/* ---- Select2 (custom theme to match design) ---- */
.select2-container--default .select2-selection--single,
.select2-container--default .select2-selection--multiple {
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  min-height: 37px;
  padding: 2px 4px;
  transition: var(--t-fast);
}
.select2-container--default.select2-container--focus .select2-selection--multiple,
.select2-container--default.select2-container--focus .select2-selection--single,
.select2-container--default.select2-container--open .select2-selection--single,
.select2-container--default.select2-container--open .select2-selection--multiple {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
  outline: 0;
}
.select2-container--default .select2-selection--single .select2-selection__rendered {
  line-height: 32px; color: var(--c-text); padding: 0 .3rem;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
  height: 36px; top: 0; right: 6px;
}
.select2-container--default .select2-selection--single .select2-selection__placeholder,
.select2-container--default .select2-search__field::placeholder {
  color: var(--c-text-light);
}
.select2-container--default .select2-search--dropdown .select2-search__field {
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  padding: .4rem .6rem;
}
.select2-container--default .select2-search--dropdown .select2-search__field:focus {
  border-color: var(--c-primary);
  outline: 0;
  box-shadow: 0 0 0 3px rgba(37,99,235,.15);
}
.select2-dropdown {
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.select2-container--default .select2-results__option {
  padding: .5rem .8rem; font-size: .92rem;
}
.select2-container--default .select2-results__option--highlighted[aria-selected] {
  background: var(--c-primary); color: #fff;
}
.select2-container--default .select2-results__option[aria-selected=true] {
  background: var(--c-primary-soft); color: var(--c-primary-dark);
}
.select2-container--default .select2-selection--multiple .select2-selection__choice {
  background: var(--c-primary-soft);
  border: 1px solid #c7d2fe;
  border-radius: 99px;
  color: var(--c-primary-dark);
  padding: 2px 8px 2px 6px;
  font-size: .82rem;
  margin: 3px 3px 0 0;
}
.select2-container--default .select2-selection--multiple .select2-selection__choice__remove {
  color: var(--c-primary-dark); margin-right: 4px; font-weight: 700;
}
.select2-container--default .select2-selection--multiple .select2-selection__choice__remove:hover {
  background: transparent; color: var(--c-danger);
}

/* ============================================
   Empty state
   ============================================ */
.empty-state {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--c-text-muted);
}
.empty-state .empty-icon {
  font-size: 2.5rem; color: var(--c-text-light);
  margin-bottom: .5rem;
}
.empty-state h5 { color: var(--c-text); margin-bottom: .25rem; }
.empty-state p { font-size: .88rem; margin-bottom: 1rem; }

/* ============================================
   Alert / toast (flash)
   ============================================ */
.alert {
  border: 1px solid transparent; border-radius: var(--radius);
  padding: .7rem 1rem; font-size: .9rem;
  display: flex; align-items: start; gap: .6rem;
}
.alert-success { background: var(--c-success-soft); border-color: #a7f3d0; color: #065f46; }
.alert-danger  { background: var(--c-danger-soft);  border-color: #fecaca; color: #991b1b; }
.alert-warning { background: var(--c-warning-soft); border-color: #fde68a; color: #92400e; }
.alert-info    { background: var(--c-info-soft);    border-color: #bae6fd; color: #075985; }

/* ============================================
   Task / PM report form
   ============================================ */
.task-row { transition: var(--t-fast); }
.task-row:hover { background: #fafbfc; }
.period-row td {
  background: linear-gradient(90deg, var(--c-primary-soft) 0%, transparent 100%);
  color: var(--c-primary-dark);
  font-weight: 600; font-size: .85rem;
  text-transform: uppercase; letter-spacing: .05em;
}
.section-row td {
  background: #f8fafc; color: var(--c-text);
  font-weight: 600; font-size: .82rem;
}

/* Legend row */
.legend {
  display: inline-flex; gap: .8rem; flex-wrap: wrap;
  font-size: .8rem; color: var(--c-text-muted);
}
.legend code { background: #eef2ff; }

/* DataTables integration */
.dataTables_wrapper .dataTables_filter input,
.dataTables_wrapper .dataTables_length select {
  border: 1px solid var(--c-border-strong);
  border-radius: var(--radius-sm);
  padding: .3rem .6rem;
}
.dataTables_wrapper .dataTables_paginate .page-link {
  border: 1px solid var(--c-border);
  color: var(--c-text-muted);
  border-radius: var(--radius-sm);
  margin: 0 2px;
  font-size: .85rem;
}
.dataTables_wrapper .dataTables_paginate .page-item.active .page-link {
  background: var(--c-primary); border-color: var(--c-primary);
}

/* ============================================
   Utilities
   ============================================ */
.shadow-soft  { box-shadow: var(--shadow); }
.muted        { color: var(--c-text-muted); }
.text-light-2 { color: var(--c-text-light); }
.rounded-xl   { border-radius: var(--radius-lg); }

.divider {
  border-top: 1px dashed var(--c-border);
  margin: 1.25rem 0;
}

/* Toolbar above tables */
.toolbar {
  display: flex; flex-wrap: wrap; gap: .5rem;
  margin-bottom: .75rem; align-items: center;
}
.toolbar .toolbar-left  { flex: 1 1 auto; }
.toolbar .toolbar-right { display: flex; gap: .4rem; }

/* Filter bar */
.filter-bar {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: .9rem 1rem;
  margin-bottom: 1rem;
}
.filter-bar label { font-size: .75rem; color: var(--c-text-muted); font-weight: 500; margin-bottom: .2rem; }

/* ============================================
   Responsive — Tablet (768px - 991px)
   ============================================ */
@media (max-width: 991.98px) {
  :root { --sidebar-w: 260px; }
  .app-main { padding: 1.25rem 1.25rem 2rem; }
}

/* ============================================
   Responsive — Mobile (< 768px)
   ============================================ */
@media (max-width: 767.98px) {
  :root { --navbar-h: 56px; }
  body { font-size: 14px; }

  .app-navbar { padding: 0 .75rem; }
  .app-brand { font-size: .95rem; gap: .5rem; }
  .app-brand-icon { width: 30px; height: 30px; }
  .app-main { padding: .9rem .75rem 2rem; }

  .page-title { font-size: 1.15rem; }
  .page-title .icon-wrap { width: 30px; height: 30px; font-size: .9rem; }
  .page-subtitle { font-size: .8rem; }
  .page-header { flex-direction: column; align-items: stretch; gap: .6rem; }
  .page-header > div:last-child { display: flex; flex-wrap: wrap; gap: .4rem; }
  .page-header .btn { flex: 1 1 auto; justify-content: center; }

  /* KPI card — compact for 2-column mobile layout */
  .kpi {
    padding: .75rem;
    gap: .6rem;
    flex-direction: column;
    align-items: flex-start;
  }
  .kpi-icon { width: 36px; height: 36px; font-size: 1rem; border-radius: 10px; }
  .kpi-label { font-size: .66rem; line-height: 1.2; }
  .kpi-value { font-size: 1.35rem; line-height: 1; margin-top: .05rem; }
  .kpi-sub   { font-size: .68rem; line-height: 1.2; }
  .kpi .flex-grow-1 { width: 100%; min-width: 0; }

  .user-pill { padding: .25rem .4rem .25rem .3rem; }
  .user-avatar { width: 26px; height: 26px; font-size: .72rem; }

  .card-header { padding: .7rem .9rem; font-size: .88rem; }
  .card-body { padding: .85rem; }
  .card-footer { padding: .5rem .9rem; }

  .filter-bar { padding: .75rem; }
  .filter-bar label { font-size: .72rem; }

  /* KPI grid tighter gutter on mobile */
  .row.g-3 { --bs-gutter-x: .6rem; --bs-gutter-y: .6rem; }

  /* Tables: scroll horizontally with subtle indicator */
  .table-responsive {
    border-radius: 0;
    margin: 0 -.15rem;
    scrollbar-width: thin;
  }
  .table { font-size: .85rem; }
  .table thead th { padding: .55rem .7rem; font-size: .7rem; }
  .table tbody td  { padding: .55rem .7rem; }

  .btn { padding: .4rem .7rem; font-size: .88rem; }
  .btn-sm { padding: .3rem .55rem; font-size: .78rem; }

  .pill { font-size: .7rem; padding: .18rem .5rem; }

  /* DataTables toolbar stacks */
  .dataTables_wrapper .dataTables_length,
  .dataTables_wrapper .dataTables_filter {
    text-align: left; float: none; margin-bottom: .5rem;
  }
  .dataTables_wrapper .dataTables_filter input { width: 100%; margin-left: 0; }
  .dataTables_wrapper .dataTables_info { font-size: .78rem; }

  .form-label { font-size: .82rem; }
  .form-control, .form-select { font-size: .9rem; }
}

/* Touch target accessibility */
@media (hover: none) and (pointer: coarse) {
  .btn, .nav-icon-btn, a.nav-link { min-height: 40px; }
  .form-control, .form-select { min-height: 40px; }
}

/* ============================================
   Print
   ============================================ */
@media print {
  .app-navbar, .app-sidebar, .sidebar-backdrop { display: none !important; }
  .app-main { margin: 0; padding: 0; }
  body { background: #fff; }
}