/* ===================================================
   ระบบสารสนเทศ สพม.นครปฐม - Main Stylesheet
   Light/Dark Theme + Responsive
   =================================================== */
*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }

:root {
  --c-primary: #1d4ed8;
  --c-secondary: #0891b2;
  --c-accent: #f59e0b;
  --c-sidebar: #0f172a;

  --c-success: #10b981;
  --c-warning: #f59e0b;
  --c-danger:  #ef4444;
  --c-info:    #06b6d4;
  --c-purple:  #8b5cf6;
  --c-pink:    #ec4899;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 2px 16px rgba(0,0,0,.07);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.10);
  --tx: .2s ease;
}

/* ---------- LIGHT (default) ---------- */
[data-theme="light"] {
  --bg:     #f1f5f9;
  --card:   #ffffff;
  --bdr:    #e2e8f0;
  --txt:    #0f172a;
  --txs:    #475569;
  --txm:    #94a3b8;
  --hover:  #f8fafc;
}
/* ---------- DARK ---------- */
[data-theme="dark"] {
  --bg:     #0f172a;
  --card:   #1e293b;
  --bdr:    #334155;
  --txt:    #f1f5f9;
  --txs:    #cbd5e1;
  --txm:    #94a3b8;
  --hover:  #283449;
}

html, body { height: 100%; }
body {
  font-family: 'Sarabun', 'Tahoma', sans-serif;
  background: var(--bg);
  color: var(--txt);
  display: flex;
  min-height: 100vh;
  overflow-x: hidden;
  font-size: 14px;
  line-height: 1.55;
}

/* ===================================================
   SIDEBAR
   =================================================== */
.sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--c-sidebar);
  display: flex;
  flex-direction: column;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  overflow-x: hidden;
  transition: width .25s ease, min-width .25s ease, transform var(--tx);
  z-index: 100;
}

/* ===== Collapse button ===== */
.sb-collapse {
  position: absolute;
  top: 14px; right: 8px;
  width: 26px; height: 26px;
  border-radius: 7px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.7);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
  transition: all .15s;
  z-index: 5;
}
.sb-collapse:hover { background: rgba(255,255,255,.18); color: #fff; }
.sb-collapse .ic-expand { display: none; }
.sb-collapse .ic-collapse { display: inline; }

/* ===== Collapsed state ===== */
.sidebar.collapsed {
  width: 64px;
  min-width: 64px;
}
.sidebar.collapsed .brand-text,
.sidebar.collapsed .zone-card,
.sidebar.collapsed .sb-section-lbl,
.sidebar.collapsed .sb-item span:not(.sb-ic),
.sidebar.collapsed .sb-foot,
.sidebar.collapsed .badge-new {
  display: none !important;
}
.sidebar.collapsed .brand {
  padding: 18px 10px 12px;
  justify-content: center;
}
.sidebar.collapsed .sb-nav { padding: 8px 8px 14px; }
.sidebar.collapsed .sb-section { padding: 6px 0 0; }
.sidebar.collapsed .sb-item {
  padding: 9px 8px;
  justify-content: center;
}
.sidebar.collapsed .sb-ic {
  margin: 0;
  width: 32px; height: 32px;
  font-size: 16px;
}
.sidebar.collapsed .sb-collapse {
  right: 50%;
  top: 8px;
  transform: translateX(50%);
}
.sidebar.collapsed .sb-collapse .ic-collapse { display: none; }
.sidebar.collapsed .sb-collapse .ic-expand { display: inline; }

/* Tooltip ตอน hover sidebar item ในโหมด collapsed */
.sidebar.collapsed .sb-item { position: relative; }
.sidebar.collapsed .sb-item:hover::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 6px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--c-sidebar);
  color: #fff;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  z-index: 200;
  box-shadow: 0 4px 12px rgba(0,0,0,.3);
  border: 1px solid rgba(255,255,255,.1);
  pointer-events: none;
}
.sidebar::-webkit-scrollbar { width:6px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius:4px; }

.brand {
  padding: 18px 16px 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display:flex; gap:12px; align-items:center;
}
.brand-logo img { width:44px; height:44px; border-radius:10px; }
.brand-mark {
  width:44px; height:44px; border-radius:10px;
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color:#fff; display:flex; align-items:center; justify-content:center;
  font-weight:800; font-size:14px;
}
.brand-text h2 { color:#fff; font-size:14px; font-weight:800; line-height:1.2; margin-bottom:2px; }
.brand-text small { color: rgba(255,255,255,.55); font-size:10.5px; line-height:1.2; display:block; }

.zone-card {
  margin: 12px 14px;
  padding: 11px 13px;
  background: rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.10);
  border-radius:10px;
}
.zone-lbl { color: rgba(255,255,255,.45); font-size:9.5px; font-weight:700; letter-spacing:1px; text-transform:uppercase; margin-bottom:4px; }
.zone-val { color:#fff; font-size:13px; font-weight:700; }
.zone-sub { color: rgba(255,255,255,.5); font-size:10.5px; margin-top:3px; }

.sb-nav { flex:1; padding: 4px 10px 14px; }
.sb-section { padding: 10px 0 2px; }
.sb-section-lbl {
  color: rgba(255,255,255,.30);
  font-size: 9.5px; font-weight:700; letter-spacing:1.4px;
  text-transform: uppercase;
  padding: 0 10px; margin-bottom: 5px;
}
.sb-item {
  display: flex; align-items:center; gap:10px;
  padding: 9px 11px; border-radius: 9px;
  text-decoration:none; color: rgba(255,255,255,.6);
  font-size:13px; font-weight:500; margin-bottom:2px;
  transition: all var(--tx);
}
.sb-item:hover { background: rgba(255,255,255,.05); color:#fff; }
.sb-item.active {
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color:#fff;
  box-shadow: 0 4px 14px rgba(29,78,216,.35);
}
.sb-ic {
  width: 28px; height: 28px;
  border-radius: 7px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(255,255,255,.07);
  font-size: 14px; flex-shrink:0;
}
.sb-item.active .sb-ic { background: rgba(255,255,255,.18); }

.sb-foot {
  padding: 14px;
  font-size: 10.5px;
  color: rgba(255,255,255,.4);
  border-top: 1px solid rgba(255,255,255,.06);
  text-align:center;
}

/* ===================================================
   MAIN
   =================================================== */
.main { flex:1; display:flex; flex-direction:column; min-width:0; }

.topbar {
  background: var(--card);
  border-bottom: 1px solid var(--bdr);
  padding: 0 22px;
  height: 62px;
  display:flex; align-items:center; gap:14px; flex-shrink:0;
  position: sticky; top:0; z-index: 50;
}
.tb-title h1 { font-size:16px; font-weight:700; line-height:1; }
.tb-title .tb-sub { font-size:11.5px; color: var(--txm); margin-top:3px; }
.tb-title { flex:1; }
.tb-actions { display:flex; gap:8px; align-items:center; }
.period-form select {
  padding: 7px 10px; border-radius:8px; border:1.5px solid var(--bdr);
  background: var(--card); color: var(--txt); font-family: inherit; font-size:12.5px;
  cursor:pointer; outline:none;
}
.period-form select:focus { border-color: var(--c-primary); }
.icon-btn {
  width: 38px; height:38px; border:1.5px solid var(--bdr); background: var(--card);
  border-radius:8px; cursor:pointer; display:flex; align-items:center; justify-content:center;
  color: var(--txs); font-size:18px;
}
.icon-btn:hover { color: var(--c-primary); border-color: var(--c-primary); }
#sidebarBtn { display:none; }
.theme-toggle .th-dark { display:none; }
[data-theme="dark"] .theme-toggle .th-dark { display:inline; }
[data-theme="dark"] .theme-toggle .th-light { display:none; }

.content {
  flex:1;
  padding: 22px;
  overflow-x: hidden;
}
.footer {
  padding: 12px 22px;
  border-top:1px solid var(--bdr);
  background: var(--card);
  color: var(--txm);
  font-size: 11.5px;
  display:flex; justify-content:space-between; align-items:center;
}

/* ===================================================
   KPI / CARDS / GRID
   =================================================== */
.kpi-grid {
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap:14px; margin-bottom:18px;
}
.kpi {
  background: var(--card);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display:flex; gap:14px;
  align-items: flex-start;
  border: 1px solid var(--bdr);
  transition: transform var(--tx), box-shadow var(--tx);
}
.kpi:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.kpi-ic {
  width:48px; height:48px; border-radius:12px;
  display:flex; align-items:center; justify-content:center;
  font-size:22px; flex-shrink:0;
}
.kpi-lbl { font-size:11.5px; color: var(--txm); font-weight:500; margin-bottom:4px; }
.kpi-val { font-size:26px; font-weight:800; line-height:1; margin-bottom:5px; }
.kpi-sub { font-size:11px; color: var(--txs); }

.ic-bl { background: rgba(59,130,246,.13); color: #3b82f6; }
.ic-gn { background: rgba(16,185,129,.13); color: #10b981; }
.ic-am { background: rgba(245,158,11,.13); color: #f59e0b; }
.ic-rd { background: rgba(239,68,68,.13); color: #ef4444; }
.ic-cy { background: rgba(6,182,212,.13); color: #06b6d4; }
.ic-pu { background: rgba(139,92,246,.13); color: #8b5cf6; }
.ic-pk { background: rgba(236,72,153,.13); color: #ec4899; }

/* ===================================================
   CARD
   =================================================== */
.card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1px solid var(--bdr);
  box-shadow: var(--shadow);
  padding: 18px 20px;
  margin-bottom: 14px;
}
.card-head {
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom: 14px; gap:10px; flex-wrap:wrap;
}
.card-title { font-size:15px; font-weight:700; display:flex; align-items:center; gap:8px; }
.card-title .badge { font-size:10.5px; padding:3px 8px; border-radius:5px;
  background: rgba(29,78,216,.1); color: var(--c-primary); font-weight:600; }
.card-sub { font-size:11.5px; color: var(--txm); margin-top:2px; }

.grid-2 { display:grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap:14px; }
.grid-3 { display:grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap:14px; }
.grid-4 { display:grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap:14px; }
.grid-2 > *, .grid-3 > *, .grid-4 > * { min-width: 0; }

/* ===================================================
   TABLE
   =================================================== */
.tbl-wrap { overflow-x: auto; border-radius: 10px; border:1px solid var(--bdr); }
.tbl { width:100%; border-collapse: collapse; font-size: 12.5px; min-width: 600px; }
.tbl thead th {
  background: var(--hover); color: var(--txs);
  text-align:left; padding: 10px 12px; font-weight:600; font-size:11.5px;
  border-bottom: 1px solid var(--bdr); position: sticky; top:0;
  text-transform: uppercase; letter-spacing:.5px;
}
.tbl tbody td {
  padding: 9px 12px; border-bottom: 1px solid var(--bdr);
  vertical-align: middle;
}
.tbl tbody tr:hover { background: var(--hover); }
.tbl .right { text-align:right; }
.tbl .center { text-align:center; }
.tbl .num { text-align:right; font-variant-numeric: tabular-nums; font-weight:600; }
.tbl-link { color: var(--c-primary); text-decoration: none; font-weight:600; }
.tbl-link:hover { text-decoration: underline; }

/* ===================================================
   FORM
   =================================================== */
.form-group { margin-bottom: 14px; }
.form-label { display:block; font-size:12.5px; font-weight:600; margin-bottom:6px; color: var(--txs); }
.form-control {
  width: 100%; padding: 10px 12px;
  border-radius: 9px; border: 1.5px solid var(--bdr);
  background: var(--card); color: var(--txt);
  font-family: inherit; font-size: 13px; outline:none;
  transition: border-color var(--tx);
}
.form-control:focus { border-color: var(--c-primary); }
textarea.form-control { min-height: 90px; resize: vertical; }

.btn {
  padding: 9px 16px; border-radius: 9px;
  font-family: inherit; font-size: 13px; font-weight:600;
  cursor: pointer; border:none;
  display:inline-flex; align-items:center; gap:6px;
  transition: all var(--tx); text-decoration:none;
}
.btn-pri { background: var(--c-primary); color:#fff; }
.btn-pri:hover { filter: brightness(1.08); }
.btn-sec { background: var(--c-secondary); color:#fff; }
.btn-out { background: transparent; color: var(--txs); border:1.5px solid var(--bdr); }
.btn-out:hover { border-color: var(--c-primary); color: var(--c-primary); }
.btn-dan { background: var(--c-danger); color:#fff; }
.btn-suc { background: var(--c-success); color:#fff; }
.btn-warn{ background: var(--c-warning); color:#fff; }
.btn-sm  { padding: 6px 12px; font-size: 12px; }

/* ===================================================
   ALERT
   =================================================== */
.alert { padding: 12px 16px; border-radius:10px; margin-bottom:14px; font-size:13.5px; border:1px solid; }
.alert-success { background: #ecfdf5; color: #065f46; border-color:#a7f3d0; }
.alert-error   { background: #fef2f2; color: #991b1b; border-color:#fecaca; }
.alert-info    { background: #eff6ff; color: #1e3a8a; border-color:#bfdbfe; }
.alert-warning { background: #fffbeb; color: #92400e; border-color:#fde68a; }
[data-theme="dark"] .alert-success { background:#064e3b; color:#a7f3d0; border-color:#065f46; }
[data-theme="dark"] .alert-error   { background:#7f1d1d; color:#fecaca; border-color:#991b1b; }
[data-theme="dark"] .alert-info    { background:#1e3a8a; color:#bfdbfe; border-color:#1e40af; }
[data-theme="dark"] .alert-warning { background:#78350f; color:#fde68a; border-color:#92400e; }

/* ===================================================
   CHIPS / BADGE
   =================================================== */
.chip { display:inline-flex; align-items:center; gap:5px; padding:4px 10px; border-radius:999px;
  font-size:11.5px; font-weight:600; background: var(--hover); color: var(--txs); }
.chip-pri { background: rgba(29,78,216,.1); color: var(--c-primary); }
.chip-suc { background: rgba(16,185,129,.13); color: var(--c-success); }
.chip-warn{ background: rgba(245,158,11,.13); color: var(--c-warning); }
.chip-dan { background: rgba(239,68,68,.13); color: var(--c-danger); }

/* ===================================================
   HERO / PAGE TITLE
   =================================================== */
.hero {
  background: linear-gradient(135deg, var(--c-primary), var(--c-secondary));
  color:#fff;
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-lg);
  display:flex; align-items:center; justify-content:space-between; gap:20px;
}
.hero h1 { font-size: 22px; font-weight: 800; margin-bottom:6px; }
.hero p  { font-size: 13.5px; opacity:.9; }
.hero .hero-num {
  font-size: 38px; font-weight: 800; line-height:1; text-align:right;
}
.hero .hero-num small { display:block; font-size:11.5px; opacity:.8; margin-top:6px; font-weight:500; }

/* ===================================================
   CHART
   =================================================== */
.chart-box {
  position: relative;
  height: 320px;
  width: 100%;
  min-width: 0;        /* สำคัญ! ให้ Chart.js shrink ได้ใน flex/grid */
}
.chart-box.h-200 { height: 200px; }
.chart-box.h-260 { height: 260px; }
.chart-box.h-300 { height: 300px; }
.chart-box.h-400 { height: 400px; }
.chart-box canvas {
  max-width: 100% !important;
  height: 100% !important;
}

/* ===================================================
   SCHOOL CARD GRID
   =================================================== */
.school-grid {
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(250px,1fr));
  gap:14px;
}
.school-card {
  background: var(--card);
  border-radius: var(--radius);
  border:1px solid var(--bdr);
  padding: 16px; cursor:pointer;
  transition: transform var(--tx), box-shadow var(--tx);
  text-decoration:none; color: inherit;
  display: block;
}
.school-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--c-primary); }
.school-card h3 { font-size:14px; font-weight:700; margin-bottom:4px; line-height:1.3; }
.school-card .school-code { font-size:11px; color: var(--txm); margin-bottom:10px; }
.school-card-stats { display:flex; justify-content:space-between; padding-top:10px; border-top:1px solid var(--bdr); }
.school-card-stats div { text-align:center; flex:1; }
.school-card-stats .v { font-size: 16px; font-weight:800; color: var(--c-primary); }
.school-card-stats .l { font-size: 10.5px; color: var(--txm); margin-top: 2px; }

/* ===================================================
   TOGGLE / OVERLAY (mobile sidebar)
   =================================================== */
.sidebar-toggle { display:none; }
.overlay { display:none; }

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .sidebar {
    position: fixed; top:0; left:0;
    transform: translateX(-100%);
    box-shadow: 6px 0 30px rgba(0,0,0,.2);
  }
  body.sidebar-open .sidebar { transform: translateX(0); }
  body.sidebar-open .overlay {
    display:block; position:fixed; inset:0;
    background: rgba(0,0,0,.45); z-index: 90;
  }
  #sidebarBtn { display:flex; }
  .content { padding: 16px; }
  .topbar { padding: 0 14px; height:56px; }
  .tb-title h1 { font-size:14px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { flex-direction:column; align-items:flex-start; padding: 20px; }
  .hero .hero-num { text-align:left; font-size:32px; }
  .kpi-val { font-size:22px; }
  .period-form select { font-size:11.5px; padding:6px 8px; }
}
@media (max-width: 480px) {
  .kpi { padding: 14px; }
  .card { padding: 14px; }
  .chart-box { height: 250px; }
}

/* ===================================================
   PRINT
   =================================================== */
@media print {
  .sidebar, .topbar, .footer, .btn, .icon-btn { display:none !important; }
  .main { width:100%; }
  .content { padding: 0; }
  .card { box-shadow:none; border-color:#ddd; }
}