:root{
  --ink:#0f2a43; --ink-2:#1c3d5c; --accent:#0d9488; --accent-2:#0f766e; --amber:#f59e0b;
  --bg:#f3f6f9; --card:#fff; --line:#e3e9ef; --muted:#64748b;
  --bs-primary:#0d9488; --bs-primary-rgb:13,148,136; --bs-link-color:#0f766e; --bs-link-color-rgb:15,118,110; --bs-link-hover-color-rgb:11,92,86; --bs-link-hover-color:#0b5c56;
  --bs-body-font-family:"Inter","Noto Sans Sinhala",system-ui,sans-serif;
}
body{background:var(--bg);color:#1e293b;font-size:.95rem}
.btn-primary{--bs-btn-bg:var(--accent);--bs-btn-border-color:var(--accent);--bs-btn-hover-bg:var(--accent-2);--bs-btn-hover-border-color:var(--accent-2);--bs-btn-active-bg:var(--accent-2);--bs-btn-active-border-color:var(--accent-2);--bs-btn-disabled-bg:var(--accent);--bs-btn-disabled-border-color:var(--accent)}
.btn-outline-primary{--bs-btn-color:var(--accent-2);--bs-btn-border-color:var(--accent);--bs-btn-hover-bg:var(--accent);--bs-btn-hover-border-color:var(--accent);--bs-btn-active-bg:var(--accent);--bs-btn-active-border-color:var(--accent)}
.form-control:focus,.form-select:focus,.form-check-input:focus{border-color:var(--accent);box-shadow:0 0 0 .2rem rgba(13,148,136,.18)}
.form-check-input:checked{background-color:var(--accent);border-color:var(--accent)}

/* Shell */
.sidebar{position:fixed;inset:0 auto 0 0;width:240px;background:var(--ink);color:#cbd5e1;flex-direction:column;padding:1rem .75rem;overflow-y:auto;z-index:1030}
.sidebar-off{background:var(--ink);color:#cbd5e1;width:270px!important}
.brand{display:flex;align-items:center;gap:.6rem;color:#fff;font-weight:700;font-size:1.15rem;text-decoration:none;padding:.25rem .5rem 1rem}
.offcanvas-header .brand{padding:0}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--accent);color:#fff}
.nav-section{font-size:.7rem;text-transform:uppercase;letter-spacing:.08em;color:#7890a8;padding:1rem .75rem .35rem}
.side-link{display:flex;align-items:center;gap:.75rem;padding:.6rem .75rem;border-radius:10px;color:#cbd5e1;text-decoration:none;font-weight:500;margin:0 .25rem}
.side-link:hover{background:var(--ink-2);color:#fff}
.side-link.active{background:var(--accent);color:#fff}
.side-link i{font-size:1.05rem}
.side-foot{margin-top:auto;padding-top:1rem;border-top:1px solid #23435f}
.side-foot .small{padding:0 .75rem .25rem;color:#94a3b8}
.main{min-height:100vh}
@media (min-width:992px){.main{margin-left:240px}}
.topbar{position:sticky;top:0;z-index:1020;display:flex;align-items:center;gap:.75rem;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);padding:.6rem 1rem}
.topbar-title{line-height:1.2;min-width:0}
.btn-icon{font-size:1.4rem;line-height:1;padding:.15rem .45rem;border:0}
.content{padding:1rem;max-width:1200px;margin:0 auto;padding-bottom:5.5rem}
@media (min-width:992px){.content{padding:1.5rem 2rem 2rem}}
.bottom-nav{position:fixed;inset:auto 0 0 0;z-index:1025;display:flex;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.bottom-nav a{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:.45rem 0 .4rem;font-size:.68rem;color:var(--muted);text-decoration:none}
.bottom-nav a i{font-size:1.25rem}
.bottom-nav a.active{color:var(--accent-2);font-weight:600}

/* Components */
.card{border:1px solid var(--line);border-radius:14px;box-shadow:0 1px 2px rgba(15,42,67,.04)}
.card-header{background:transparent;border-bottom:1px solid var(--line);font-weight:600;padding:.85rem 1rem}
.stat{display:flex;flex-direction:row;align-items:center;gap:.85rem;padding:1rem}
.stat-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.25rem;background:#e6f6f4;color:var(--accent-2);flex:none}
.stat-num{font-size:1.5rem;font-weight:700;line-height:1}
.stat-label{color:var(--muted);font-size:.8rem}
.hero{background:linear-gradient(135deg,var(--ink) 0%,#134e5e 60%,var(--accent-2) 100%);color:#fff;border-radius:16px;padding:1.25rem}
.hero .btn-light{font-weight:600;color:var(--ink)}
.table{--bs-table-bg:transparent;margin:0}
.table thead th{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;border-bottom-width:1px;white-space:nowrap}
.table td{vertical-align:middle}
.search-box{position:relative}
.search-box i{position:absolute;left:.8rem;top:50%;transform:translateY(-50%);color:var(--muted)}
.search-box input{padding-left:2.3rem;border-radius:10px}
.badge-soft{background:#e6f6f4;color:var(--accent-2);font-weight:600}
.badge-amber{background:#fef3c7;color:#92400e;font-weight:600}
.badge-red{background:#fee2e2;color:#991b1b;font-weight:600}
.badge-blue{background:#dbeafe;color:#1e40af;font-weight:600}
.badge-gray{background:#e9eef3;color:#475569;font-weight:600}
.chip{display:inline-flex;align-items:center;gap:.4rem;background:#e6f6f4;color:var(--accent-2);border-radius:999px;padding:.25rem .35rem .25rem .7rem;font-size:.85rem;font-weight:500;margin:0 .3rem .3rem 0}
.chip.bad{background:#fee2e2;color:#991b1b}
.chip button{border:0;background:rgba(0,0,0,.08);width:20px;height:20px;border-radius:50%;line-height:1;color:inherit;padding:0}
.suggest{position:absolute;z-index:20;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 24px rgba(15,42,67,.12);max-height:260px;overflow:auto}
.suggest button{display:block;width:100%;text-align:left;border:0;background:none;padding:.55rem .8rem;border-bottom:1px solid #f1f5f9}
.suggest button:hover{background:#f1f5f9}
.steps .step{display:flex;align-items:center;gap:.75rem;padding:.7rem 1rem;border-bottom:1px solid var(--line);text-decoration:none;color:inherit}
.steps .step:last-child{border-bottom:0}
.step-dot{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:#e9eef3;color:var(--muted);font-weight:700;font-size:.8rem;flex:none}
.step.done .step-dot{background:var(--accent);color:#fff}

/* Timetable grid */
.tt-wrap{overflow-x:auto}
.tt{width:100%;min-width:500px;border-collapse:separate;border-spacing:4px;table-layout:fixed}
.tt th{font-size:.75rem;color:var(--muted);font-weight:600;text-align:center;padding:.2rem}
.tt th.p{width:46px;position:sticky;left:0;background:#fff;z-index:1}
.tt .cell{display:block;width:100%;min-height:54px;border:1px dashed #cbd5e1;border-radius:10px;background:#fff;padding:.3rem .35rem;font-size:.75rem;line-height:1.25;text-align:center;color:var(--muted)}
button.cell:hover{border-color:var(--accent);background:#f0fdfa}
.tt .cell.filled{border:1px solid #b7e4de;background:#f0fdfa;color:#134e4a}
.tt .cell b{display:block;font-size:.78rem}
.tt .cell.wrong{border:1px solid #fca5a5;background:#fef2f2;color:#991b1b}
.tt .cell.wrong i{display:block;font-size:.7rem;margin-top:2px}
@media print{.tt .cell.wrong{border-color:#cbd5e1;background:#fff;color:#000}.tt .cell.wrong i{display:none}}
.tt .interval td{text-align:center;font-size:.7rem;letter-spacing:.2em;color:#92400e;background:#fef3c7;border-radius:8px;padding:.15rem}
.blk{border-collapse:separate;border-spacing:3px}
.blk th{font-size:.72rem;text-align:center;color:var(--muted);cursor:pointer;user-select:none;padding:.15rem .3rem}
.blk td{text-align:center}
.blk input{width:1.6rem;height:1.6rem;margin:0}
.blk input:checked{background-color:#dc2626;border-color:#dc2626}

/* Class grid */
.grade-btn{min-width:44px;font-weight:600}
.cgrid{border-collapse:separate;border-spacing:3px}
.cgrid th{font-size:.8rem;color:var(--muted);text-align:center;cursor:pointer;user-select:none;padding:.2rem .4rem}
.cgrid .cg{min-width:48px;padding:.35rem .15rem;font-size:.78rem;font-weight:600;border:1px dashed #cbd5e1;color:#94a3b8;background:#fff}
.cgrid .btn-check:checked+.cg{border:1px solid var(--accent);background:#e6f6f4;color:var(--accent-2)}
.cgrid .btn-check:disabled+.cg.have,.cg-dot.have{background:#e9eef3;border:1px solid #cbd5e1;color:#64748b;opacity:1}
.cg-dot{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:-1px}

/* Teacher timetable entry */
.tcell{border:1px dashed #cbd5e1;border-radius:10px;background:#fff;padding:3px;min-height:54px;display:flex;flex-direction:column;justify-content:center;gap:2px}
.tcell.filled{border:1px solid #b7e4de;background:#f0fdfa}
.tcell.err{border:1px solid #dc2626;background:#fef2f2}
.tcell.ok{box-shadow:0 0 0 2px rgba(13,148,136,.35)}
.tcell input{width:100%;border:0;background:transparent;text-align:center;font-weight:700;font-size:.85rem;color:#134e4a;padding:.25rem 0;outline:0;text-transform:uppercase}
.tcell input::placeholder{color:#cbd5e1;font-weight:400}
.tcell select{width:100%;border:0;background:rgba(13,148,136,.1);border-radius:6px;font-size:.68rem;padding:1px 2px;color:#134e4a}

/* Auth pages */
.auth{min-height:100vh;display:grid;place-items:center;padding:1rem;background:linear-gradient(135deg,var(--ink) 0%,#134e5e 60%,var(--accent-2) 100%)}
.auth-card{width:100%;max-width:440px;background:#fff;border-radius:18px;padding:1.75rem;box-shadow:0 20px 50px rgba(0,0,0,.25)}
.auth-card .brand{color:var(--ink);padding:0 0 1rem}

.print-only{display:none}
@media print{
  .no-print,.sidebar,.topbar,.bottom-nav,.offcanvas{display:none!important}
  .print-only{display:block}
  .main{margin:0}.content{padding:0;max-width:none}
  body{background:#fff;font-size:11pt}
  .card{border:0;box-shadow:none}
  .table td,.table th{border:1px solid #333!important;padding:4px 6px}
  .badge{border:0;background:none!important;color:#000!important;padding:0;font-weight:400}
}

.sms-preview{white-space:pre-wrap;font-family:inherit;font-size:.8rem;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;padding:.6rem .75rem;margin:.35rem 0 0;max-width:320px;color:#14532d}
/* v2.6 – part-day absence + away classes */
.chip button.chip-p{width:auto;height:auto;border-radius:999px;padding:.1rem .5rem;font-size:.75rem;background:#fff;color:#475569;border:1px solid #cbd5e1;white-space:nowrap}
.chip button.chip-p.on{background:#fee2e2;color:#991b1b;border-color:#fca5a5;font-weight:600}
.period-pick{display:flex;flex-wrap:wrap;gap:.35rem;align-items:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:.5rem .6rem;margin:.1rem 0 .5rem;font-size:.82rem;color:#334155}
.period-pick .btn{display:inline-flex;flex-direction:column;align-items:center;line-height:1.05;min-width:48px;padding:.25rem .4rem}
.period-pick .btn small{font-size:.65rem;opacity:.8}
.away-box{border:1px solid #e2e8f0;border-radius:12px;padding:.6rem .8rem}
.away-box summary{cursor:pointer;font-weight:600;font-size:.92rem}
.away-box[open] summary{margin-bottom:.4rem}
.part-tag{font-size:.72rem;background:#fee2e2;color:#991b1b;border-radius:6px;padding:.05rem .35rem;margin-left:.25rem;font-weight:600}
.away-box .btn-check:checked+.btn{background:#c2410c;border-color:#c2410c;color:#fff}
/* v2.7 – timetable check */
.chk-big{width:54px;height:54px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:1.6rem}
.chk-big.ok{background:#dcfce7;color:#15803d}.chk-big.bad{background:#fef3c7;color:#b45309}
.load-bar{position:relative;height:10px;background:#f1f5f9;border-radius:6px;overflow:visible}
.load-bar span{display:block;height:100%;border-radius:6px;background:#14b8a6}
.load-bar span.low{background:#f59e0b}.load-bar span.high,.load-bar span.none{background:#ef4444}
.load-bar i{position:absolute;top:-3px;bottom:-3px;width:2px;background:#94a3b8;border-radius:1px}