@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;1,9..40,400&display=swap');

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

/* ── Tokens ─────────────────────────────────────────────────────────────────── */
:root {
  /* Sidebar */
  --sidebar-w:     240px;
  --sidebar-bg:    #0d1b2a;
  --sidebar-bg2:   #112236;
  --sidebar-border:#1e3352;
  --sidebar-text:  #7a9ab8;
  --sidebar-hover: #1a2f47;
  --sidebar-active:#1d9e75;

  /* Content */
  --bg:        #f4f6f9;
  --bg2:       #ffffff;
  --bg3:       #eef1f5;
  --border:    #e2e7ef;
  --border2:   #cdd3de;

  /* Text */
  --text:      #0d1b2a;
  --text2:     #4a5568;
  --text3:     #94a3b8;

  /* Accents */
  --blue:      #1e40af;
  --blue-lt:   #dbeafe;
  --blue-mid:  #3b82f6;
  --green:     #1d9e75;
  --green-lt:  #d1fae5;
  --green-mid: #10b981;
  --red:       #991b1b;
  --red-lt:    #fee2e2;
  --red-mid:   #ef4444;
  --amber:     #92400e;
  --amber-lt:  #fef3c7;
  --amber-mid: #f59e0b;
  --purple:    #5b21b6;
  --purple-lt: #ede9fe;
  --purple-mid:#7c3aed;

  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 1px 4px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,.08);

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ── PIN SCREEN ─────────────────────────────────────────────────────────────── */
#pin-screen {
  position: fixed; inset: 0;
  background: var(--sidebar-bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 200;
}
#pin-screen.hidden { display: none; }

.pin-card {
  background: var(--sidebar-bg2);
  border: 1px solid var(--sidebar-border);
  border-radius: 20px;
  padding: 44px 40px;
  width: 340px;
  box-shadow: 0 24px 64px rgba(0,0,0,.4);
  text-align: center;
}
.pin-logo {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  margin-bottom: 32px;
}
.pin-logo-icon {
  width: 38px; height: 38px;
  background: var(--green);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 13px; font-weight: 800; color: #fff;
}
.pin-logo-text {
  font-family: var(--font-display);
  font-size: 13px; font-weight: 700; color: #fff;
  letter-spacing: .02em;
}
.pin-title {
  font-family: var(--font-display);
  font-size: 20px; font-weight: 700; color: #fff;
  margin-bottom: 6px;
}
.pin-sub { font-size: 13px; color: var(--sidebar-text); margin-bottom: 28px; }
.pin-dots {
  display: flex; gap: 12px; justify-content: center; margin-bottom: 24px;
}
.pin-dot {
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--sidebar-border);
  transition: all .2s;
}
.pin-dot.filled { background: var(--green); border-color: var(--green); }
.pin-dot.error  { background: var(--red-mid); border-color: var(--red-mid); }
.pin-keypad {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 8px;
  margin-bottom: 14px;
}
.pin-key {
  background: var(--sidebar-hover); border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm);
  padding: 14px; font-size: 17px; font-weight: 600;
  color: #fff; cursor: pointer; transition: all .15s;
  font-family: var(--font-display);
}
.pin-key:hover { background: #1e3352; }
.pin-key:active { transform: scale(.95); }
.pin-key.empty { background: transparent; border-color: transparent; cursor: default; }
.pin-key.del   { font-size: 13px; color: var(--sidebar-text); }
.pin-error { font-size: 12px; color: var(--red-mid); min-height: 18px; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-7px); }
  75%      { transform: translateX(7px); }
}
.shake { animation: shake .3s ease; }

/* ── LAYOUT ─────────────────────────────────────────────────────────────────── */
#main { display: none; }
#main.visible { display: flex; min-height: 100vh; }

/* ── SIDEBAR ─────────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 50; overflow-y: auto;
}

.sidebar-brand {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--sidebar-border);
  display: flex; align-items: center; gap: 12px;
}
.sidebar-brand-icon {
  width: 36px; height: 36px; flex-shrink: 0;
  background: var(--green);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 12px; font-weight: 800; color: #fff;
}
.sidebar-brand-name {
  font-family: var(--font-display);
  font-size: 12px; font-weight: 700; color: #fff;
  line-height: 1.3;
}
.sidebar-brand-sub { font-size: 10px; color: var(--sidebar-text); margin-top: 1px; }

.sidebar-section {
  padding: 20px 12px 8px;
}
.sidebar-section-label {
  font-size: 10px; font-weight: 700; color: var(--sidebar-text);
  text-transform: uppercase; letter-spacing: .1em;
  padding: 0 8px; margin-bottom: 6px;
}

.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500; color: var(--sidebar-text);
  cursor: pointer; transition: all .15s;
  border: none; background: none; width: 100%; text-align: left;
}
.nav-item:hover { background: var(--sidebar-hover); color: #fff; }
.nav-item.active {
  background: rgba(29,158,117,.15);
  color: #4ade80;
  font-weight: 600;
}
.nav-item.active .nav-icon { color: #4ade80; }
.nav-icon {
  width: 18px; height: 18px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; color: var(--sidebar-text);
  transition: color .15s;
}
.nav-badge {
  margin-left: auto;
  font-size: 10px; font-weight: 700;
  background: rgba(29,158,117,.2); color: #4ade80;
  border-radius: 10px; padding: 1px 7px;
}

.sidebar-footer {
  margin-top: auto;
  padding: 16px 12px;
  border-top: 1px solid var(--sidebar-border);
}
.sidebar-period {
  font-size: 10px; font-weight: 600; color: var(--sidebar-text);
  background: var(--sidebar-hover);
  border-radius: var(--radius-sm); padding: 8px 12px;
  margin-bottom: 8px; text-align: center;
  letter-spacing: .02em;
}
.sidebar-period span { color: var(--green); display: block; font-size: 12px; font-weight: 700; margin-top: 2px; }
.logout-btn {
  width: 100%; font-size: 12px; color: var(--sidebar-text);
  background: none; border: 1px solid var(--sidebar-border);
  border-radius: var(--radius-sm); padding: 8px 12px;
  cursor: pointer; transition: all .15s; font-family: var(--font-body);
}
.logout-btn:hover { border-color: var(--red-mid); color: var(--red-mid); }

/* ── CONTENT AREA ───────────────────────────────────────────────────────────── */
.content {
  margin-left: var(--sidebar-w);
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
}

/* ── TOPBAR ─────────────────────────────────────────────────────────────────── */
.topbar {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 32px; height: 60px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 40;
  box-shadow: var(--shadow);
}
.topbar-title {
  font-family: var(--font-display);
  font-size: 15px; font-weight: 700; color: var(--text);
}
.topbar-right { display: flex; align-items: center; gap: 16px; }
.growth-pill {
  display: flex; align-items: center; gap: 8px;
  background: var(--green-lt);
  border: 1px solid #a7f3d0;
  border-radius: 20px; padding: 6px 14px;
}
.growth-num {
  font-family: var(--font-display);
  font-size: 16px; font-weight: 800; color: var(--green);
}
.growth-lbl { font-size: 11px; color: #065f46; font-weight: 500; }

/* ── MAIN WRAP ──────────────────────────────────────────────────────────────── */
.wrap { padding: 28px 32px; flex: 1; }

/* ── PAGE HEADER ────────────────────────────────────────────────────────────── */
.page-header { margin-bottom: 24px; }
.page-title {
  font-family: var(--font-display);
  font-size: 22px; font-weight: 800; color: var(--text);
  letter-spacing: -.3px;
}
.page-title span { color: var(--green); }
.page-sub { font-size: 12px; color: var(--text3); margin-top: 3px; }

/* ── FILTER BAR ─────────────────────────────────────────────────────────────── */
.filter-bar {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 20px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  margin-bottom: 24px;
  box-shadow: var(--shadow);
}
.filter-label { font-size: 11px; font-weight: 700; color: var(--text3); text-transform: uppercase; letter-spacing: .07em; white-space: nowrap; }
.filter-toggles { display: flex; gap: 4px; }
.filter-btn {
  font-size: 12px; font-weight: 600; padding: 5px 13px;
  border-radius: 20px; border: 1px solid var(--border);
  background: var(--bg3); color: var(--text2);
  cursor: pointer; transition: all .15s; font-family: var(--font-body);
}
.filter-btn.active { background: var(--sidebar-bg); color: #fff; border-color: var(--sidebar-bg); }
.filter-divider { width: 1px; height: 20px; background: var(--border); }
.filter-range { display: flex; align-items: center; gap: 8px; }
.filter-range label { font-size: 11px; color: var(--text3); font-weight: 600; text-transform: uppercase; letter-spacing: .05em; }
.filter-range input[type="date"] {
  font-size: 12px; padding: 5px 8px;
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  background: var(--bg3); color: var(--text);
  cursor: pointer; font-family: var(--font-body);
}
.filter-range input[type="date"]:focus { outline: none; border-color: var(--green); }
.filter-apply {
  font-size: 12px; font-weight: 600; padding: 5px 14px;
  border-radius: var(--radius-sm);
  background: var(--green); color: #fff; border: none;
  cursor: pointer; transition: all .15s; font-family: var(--font-body);
}
.filter-apply:hover { background: #178a64; }

/* ── TAB CONTENT ────────────────────────────────────────────────────────────── */
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── KPI GRID ───────────────────────────────────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 14px; margin-bottom: 22px;
}
.kpi {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 18px;
  box-shadow: var(--shadow); position: relative; overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.kpi:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.kpi-accent { position: absolute; top: 0; left: 0; right: 0; height: 3px; }
.kpi-label {
  font-size: 10px; font-weight: 700; color: var(--text3);
  text-transform: uppercase; letter-spacing: .09em; margin-bottom: 10px;
}
.kpi-val {
  font-family: var(--font-display);
  font-size: 32px; font-weight: 800;
  font-variant-numeric: tabular-nums; line-height: 1;
}
.kpi-sub { font-size: 11px; color: var(--text3); margin-top: 6px; }

/* ── PANEL ──────────────────────────────────────────────────────────────────── */
.panel {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 22px 24px;
  margin-bottom: 16px; box-shadow: var(--shadow);
}
.panel-header {
  display: flex; align-items: center; gap: 12px; margin-bottom: 20px;
}
.panel-header h2 {
  font-family: var(--font-display);
  font-size: 13px; font-weight: 700; color: var(--text);
  white-space: nowrap; text-transform: uppercase; letter-spacing: .06em;
}
.panel-header .line { flex: 1; height: 1px; background: var(--border); }
.legend { display: flex; gap: 20px; margin-top: 16px; flex-wrap: wrap; }
.leg-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text2); }
.leg-dot  { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }

/* ── CALLOUT ────────────────────────────────────────────────────────────────── */
.callout {
  background: linear-gradient(135deg, #f0fdf9 0%, #e0f7f1 100%);
  border: 1px solid #a7f3d0;
  border-left: 4px solid var(--green);
  border-radius: var(--radius);
  padding: 16px 20px; margin-bottom: 16px;
  font-size: 13px; color: #065f46; line-height: 1.7;
}
.callout strong { color: var(--green); }

/* ── TWO-COL LAYOUT ─────────────────────────────────────────────────────────── */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 900px) { .two-col { grid-template-columns: 1fr; } }

/* ── CARDS ──────────────────────────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px; margin-top: 16px;
}
.stat-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 14px;
  box-shadow: var(--shadow);
}
.stat-card .top-bar { height: 3px; border-radius: 2px 2px 0 0; margin: -14px -14px 12px; }
.stat-card .sc-label { font-size: 12px; font-weight: 700; color: var(--text); margin-bottom: 6px; }
.stat-card .sc-val   {
  font-family: var(--font-display);
  font-size: 22px; font-weight: 800; font-variant-numeric: tabular-nums;
}
.stat-card .sc-sub   { font-size: 11px; color: var(--text3); margin-top: 3px; }

/* ── PROF GRID ──────────────────────────────────────────────────────────────── */
.prof-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px; margin-top: 16px;
}
.prof-card {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px; text-align: center;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.prof-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.prof-avatar {
  width: 40px; height: 40px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 10px;
  font-family: var(--font-display);
  font-size: 16px; font-weight: 800;
}
.prof-name {
  font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 8px;
}
.prof-stat .n {
  font-family: var(--font-display);
  font-size: 20px; font-weight: 800; font-variant-numeric: tabular-nums;
}
.prof-stat .l { font-size: 10px; color: var(--text3); }

/* ── TABLE ──────────────────────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  text-align: left; font-size: 10px; font-weight: 700;
  color: var(--text3); text-transform: uppercase; letter-spacing: .08em;
  padding: 8px 12px; border-bottom: 2px solid var(--border);
  background: var(--bg3); font-family: var(--font-display);
}
.data-table td {
  padding: 10px 12px; border-bottom: 1px solid var(--border);
  color: var(--text2); vertical-align: top;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg3); }
.data-table td.primary { color: var(--text); font-weight: 500; }

/* ── SCHOOL GRID ────────────────────────────────────────────────────────────── */
.school-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 10px;
}
.school-item {
  background: var(--bg3); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 14px;
  display: flex; align-items: center; gap: 10px;
  transition: background .15s;
}
.school-item:hover { background: var(--bg2); }
.school-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.school-name { font-size: 13px; color: var(--text2); font-weight: 500; }

/* ── LOADING ────────────────────────────────────────────────────────────────── */
.loading { text-align: center; padding: 60px 20px; color: var(--text3); font-size: 14px; }
.spinner {
  display: inline-block; width: 22px; height: 22px;
  border: 2px solid var(--border2); border-top-color: var(--green);
  border-radius: 50%; animation: spin .8s linear infinite; margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── EMPTY STATE ────────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 40px 20px;
  color: var(--text3); font-size: 13px;
}

canvas { max-width: 100%; }

/* ── RESPONSIVE ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .content { margin-left: 0; }
  .wrap { padding: 20px 16px; }
}