/* HSBCI Student Activity Tracker — Design system
   Navy/orange/white brand (High School Bridge CI). Mobile-first for student/teacher, desktop-first admin. */
:root{
  --blue:#1a56db; --blue-dark:#1e429f; --blue-light:#e8effe; --blue-ink:#0f2f7a;
  --navy:#14315c; --navy-dark:#0e2342; --orange:#ef9b2f; --orange-dark:#d97f14;
  --ink:#111827; --muted:#6b7280; --line:#e5e7eb; --bg:#f3f6fb; --card:#ffffff;
  --green:#047857; --green-bg:#d1fae5;
  --amber:#b45309; --amber-bg:#fef3c7;
  --red:#b91c1c;   --red-bg:#fee2e2;
  --gray:#4b5563;  --gray-bg:#e5e7eb;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 3px rgba(16,24,40,.08),0 1px 2px rgba(16,24,40,.06);
  --shadow-lg:0 10px 30px rgba(16,24,40,.16);
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --tabbar-h:64px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--ink);
  font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{margin:0 0 .5rem;line-height:1.25}
p{margin:0 0 .75rem}
a{color:var(--blue)}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px;border-radius:6px}

/* ── Layout ─────────────────────────────────────────────── */
.page{max-width:1120px;margin:0 auto;padding:16px 16px 32px}
.page-narrow{max-width:560px;margin:0 auto;padding:16px 16px 32px}
.page-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.page-head h1{font-size:1.5rem}
.page-head .sub{color:var(--muted);font-size:.95rem}
.brandbar{background:linear-gradient(135deg,var(--navy-dark),var(--navy));color:#fff;
  padding:14px 16px;display:flex;align-items:center;gap:12px;border-bottom:3px solid var(--orange)}
.brandbar .logo{width:44px;height:44px;border-radius:12px;flex:none;object-fit:cover}
.brandbar img.logo{background:var(--navy-dark)}
.brandbar .t1{font-weight:700;font-size:1.05rem;line-height:1.2}
.brandbar .t2{font-size:.78rem;opacity:.85}
.topbar{background:#fff;border-bottom:1px solid var(--line);padding:10px 16px;
  display:flex;align-items:center;justify-content:space-between;gap:10px;position:sticky;top:0;z-index:40}
.topbar .who{display:flex;align-items:center;gap:10px;min-width:0}
.topbar-logo{width:34px;height:34px;border-radius:9px;flex:none;object-fit:cover}
.avatar{width:38px;height:38px;border-radius:50%;background:var(--blue-light);color:var(--blue-ink);
  display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.topbar .who .nm{font-weight:600;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.topbar .who .rl{font-size:.75rem;color:var(--muted)}

/* ── Cards / KPIs ───────────────────────────────────────── */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px;margin-bottom:16px}
.card h2{font-size:1.1rem;margin-bottom:12px}
.card h3{font-size:1rem;margin-bottom:10px}
.kpi-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:16px}
@media(min-width:720px){.kpi-grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1024px){.kpi-grid.cols-6{grid-template-columns:repeat(6,1fr)}.kpi-grid{grid-template-columns:repeat(3,1fr)}}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:14px;min-width:0}
.kpi .v{font-size:1.5rem;font-weight:800;color:var(--blue-ink);line-height:1.15;word-break:break-word}
.kpi .l{font-size:.8rem;color:var(--muted);margin-top:4px}
.kpi .sub{font-size:.78rem;color:var(--muted)}
.kpi.accent{border-left:5px solid var(--blue)}

/* ── Progress ───────────────────────────────────────────── */
.progress{height:12px;background:#e8edf5;border-radius:999px;overflow:hidden;margin:8px 0}
.progress>i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),#3b82f6);
  border-radius:999px;transition:width .4s ease}
.progress.big{height:16px}
.target-line{display:flex;justify-content:space-between;font-size:.9rem;margin-bottom:2px}
.target-line strong{font-size:1.05rem}

/* ── Badges (never color alone: always text + icon) ─────── */
.badge{display:inline-flex;align-items:center;gap:6px;font-weight:700;font-size:.8rem;
  padding:4px 10px;border-radius:999px;border:1px solid transparent;white-space:nowrap}
.badge .ic{font-style:normal}
.badge-bon{background:var(--green-bg);color:var(--green);border-color:#a7f3d0}
.badge-surveiller{background:var(--amber-bg);color:var(--amber);border-color:#fde68a}
.badge-risque{background:var(--red-bg);color:var(--red);border-color:#fecaca}
.badge-inactif{background:var(--gray-bg);color:var(--gray);border-color:#d1d5db}
.badge-info{background:var(--blue-light);color:var(--blue-ink);border-color:#bfdbfe}
.badge-neutral{background:#f3f4f6;color:var(--gray);border-color:var(--line)}
.sev-info{background:var(--blue-light);color:var(--blue-ink)}
.sev-warning{background:var(--amber-bg);color:var(--amber)}
.sev-critical{background:var(--red-bg);color:var(--red)}

/* ── Buttons ────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;
  border-radius:12px;padding:12px 18px;font-size:1rem;font-weight:700;cursor:pointer;
  background:#fff;color:var(--ink);border-color:var(--line);text-decoration:none;
  min-height:48px;transition:transform .05s ease, box-shadow .15s}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn-primary{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--blue-dark)}
.btn-danger{background:var(--red);border-color:var(--red);color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--blue)}
.btn-outline{background:#fff;border-color:var(--blue);color:var(--blue)}
.btn-sm{min-height:36px;padding:7px 12px;font-size:.85rem;border-radius:9px}
.btn-lg{min-height:60px;font-size:1.2rem;border-radius:16px;width:100%;padding:16px}
.btn-block{width:100%}
.btn-row{display:flex;gap:10px;flex-wrap:wrap}
.icon-btn{background:none;border:none;font-size:1.2rem;cursor:pointer;padding:6px;border-radius:8px}

/* ── Forms ──────────────────────────────────────────────── */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.92rem}
.field .hint{font-size:.8rem;color:var(--muted);margin-top:4px}
.field .err{font-size:.82rem;color:var(--red);margin-top:4px;font-weight:600}
input[type=text],input[type=email],input[type=password],input[type=number],
input[type=date],input[type=time],input[type=url],select,textarea{
  width:100%;padding:12px;border:1.5px solid var(--line);border-radius:10px;font-size:1rem;
  font-family:inherit;background:#fff;color:var(--ink);min-height:48px}
textarea{min-height:110px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--blue);outline:none;
  box-shadow:0 0 0 3px rgba(26,86,219,.15)}
input.invalid,select.invalid,textarea.invalid{border-color:var(--red)}
.form-grid{display:grid;grid-template-columns:1fr;gap:0 14px}
@media(min-width:640px){.form-grid.two{grid-template-columns:1fr 1fr}}
.checklist{border:1.5px solid var(--line);border-radius:10px;max-height:220px;overflow:auto;padding:6px}
.checklist label{display:flex;align-items:center;gap:10px;padding:9px 8px;border-radius:8px;
  cursor:pointer;font-weight:500;font-size:.95rem}
.checklist label:hover{background:var(--bg)}
.checklist input{width:20px;height:20px;accent-color:var(--blue);flex:none}
.radio-row{display:flex;gap:8px;flex-wrap:wrap}
.radio-pill{border:1.5px solid var(--line);border-radius:999px;padding:10px 16px;cursor:pointer;
  font-weight:600;background:#fff;min-height:48px;display:inline-flex;align-items:center}
.radio-pill input{accent-color:var(--blue);width:18px;height:18px;margin-right:8px}
.radio-pill:has(input:checked){border-color:var(--blue);background:var(--blue-light);color:var(--blue-ink)}
.wordcount{font-size:.8rem;color:var(--muted);text-align:right;margin-top:4px}
.wordcount.ok{color:var(--green);font-weight:700}

/* ── Tables ─────────────────────────────────────────────── */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.data{width:100%;border-collapse:collapse;font-size:.92rem;min-width:640px}
table.data th{background:#f8fafc;text-align:left;padding:10px 12px;font-size:.78rem;
  text-transform:uppercase;letter-spacing:.04em;color:var(--muted);white-space:nowrap}
table.data td{padding:11px 12px;border-top:1px solid var(--line);vertical-align:middle}
table.data tr:hover td{background:#f8fafc}
table.data tr.clickable{cursor:pointer}
.pager{display:flex;align-items:center;gap:10px;justify-content:center;padding:14px;font-size:.9rem}

/* ── Bottom tab bar (mobile, student/teacher) ───────────── */
.tabbar{position:fixed;left:0;right:0;bottom:0;height:calc(var(--tabbar-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--line);
  display:flex;z-index:50}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:2px;text-decoration:none;color:var(--muted);font-size:.7rem;font-weight:600}
.tabbar a .ti{font-size:1.35rem}
.tabbar a.active{color:var(--blue)}
.has-tabbar{padding-bottom:calc(var(--tabbar-h) + 24px)}
@media(min-width:768px){.tabbar{display:none}.has-tabbar{padding-bottom:32px}}

/* ── Admin layout ───────────────────────────────────────── */
.admin-shell{display:flex;min-height:100vh}
.sidebar{width:240px;flex:none;background:var(--blue-dark);color:#fff;display:flex;flex-direction:column;
  position:sticky;top:0;height:100vh}
.sidebar .brand{padding:18px 16px;border-bottom:1px solid rgba(255,255,255,.15)}
.sidebar .brand .t1{font-weight:800}
.sidebar .brand .t2{font-size:.72rem;opacity:.75}
.sidebar nav{flex:1;overflow:auto;padding:10px}
.sidebar nav a{display:flex;align-items:center;gap:10px;color:#dbe4ff;text-decoration:none;
  padding:11px 12px;border-radius:10px;font-weight:600;font-size:.95rem;margin-bottom:2px}
.sidebar nav a .ti{font-size:1.15rem;width:26px;text-align:center}
.sidebar nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.sidebar nav a.active{background:#fff;color:var(--blue-dark)}
.sidebar .foot{padding:12px;border-top:1px solid rgba(255,255,255,.15);font-size:.8rem}
.admin-main{flex:1;min-width:0}
.menu-btn{display:none}
@media(max-width:900px){
  .sidebar{position:fixed;left:0;top:0;bottom:0;z-index:80;transform:translateX(-100%);transition:transform .25s}
  .sidebar.open{transform:none;box-shadow:var(--shadow-lg)}
  .menu-btn{display:inline-flex}
  .scrim{position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:70}
}

/* ── Session / timer ────────────────────────────────────── */
.timer-hero{text-align:center;padding:28px 16px}
.timer-hero .lbl{font-weight:800;letter-spacing:.08em;font-size:.85rem;color:var(--muted)}
.timer-hero .clock{font-size:3.4rem;font-weight:800;color:var(--blue-ink);
  font-variant-numeric:tabular-nums;letter-spacing:.02em;margin:6px 0}
.timer-hero.live .clock{color:var(--blue)}
.timer-hero.paused .clock{color:var(--amber)}
.kv{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line);font-size:.95rem}
.kv:last-child{border-bottom:none}
.kv .k{color:var(--muted)}
.kv .v{font-weight:600;text-align:right}
.session-meta{background:var(--blue-light);border-radius:var(--radius-sm);padding:12px 14px;margin:12px 0}
.pause-banner{background:var(--amber-bg);border:1px solid #fde68a;color:var(--amber);
  border-radius:var(--radius-sm);padding:10px 14px;font-weight:700;margin-bottom:12px;text-align:center}

/* ── Lists ──────────────────────────────────────────────── */
.list-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-bottom:10px;box-shadow:var(--shadow)}
.list-item .top{display:flex;justify-content:space-between;gap:8px;align-items:flex-start;margin-bottom:6px}
.list-item .ttl{font-weight:700}
.list-item .meta{font-size:.85rem;color:var(--muted)}
.tag{display:inline-block;background:#f3f4f6;border:1px solid var(--line);border-radius:999px;
  padding:2px 10px;font-size:.78rem;font-weight:600;margin:2px 4px 2px 0}
.session-card{border-left:5px solid var(--blue)}

/* ── Toasts ─────────────────────────────────────────────── */
.toast-root{position:fixed;top:14px;left:50%;transform:translateX(-50%);z-index:200;
  display:flex;flex-direction:column;gap:8px;width:min(480px,calc(100vw - 32px))}
.toast{background:#111827;color:#fff;border-radius:12px;padding:13px 16px;font-weight:600;
  box-shadow:var(--shadow-lg);display:flex;gap:10px;align-items:flex-start;
  animation:tin .25s ease}
.toast.success{background:var(--green)}
.toast.error{background:var(--red)}
.toast.info{background:var(--blue-dark)}
@keyframes tin{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

/* ── Modal ──────────────────────────────────────────────── */
.modal-scrim{position:fixed;inset:0;background:rgba(17,24,39,.55);z-index:150;display:flex;
  align-items:flex-end;justify-content:center;padding:0}
@media(min-width:640px){.modal-scrim{align-items:center;padding:24px}}
.modal{background:#fff;border-radius:18px 18px 0 0;width:100%;max-width:620px;max-height:92vh;
  overflow:auto;padding:20px;animation:tin .2s ease}
@media(min-width:640px){.modal{border-radius:18px}}
.modal h2{margin-bottom:14px;font-size:1.2rem}
.modal .m-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:18px;flex-wrap:wrap}

/* ── Loading / empty / error ────────────────────────────── */
.loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.85);z-index:300;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px}
.loading-overlay.hidden{display:none}
.spinner{width:36px;height:36px;border:4px solid var(--blue-light);border-top-color:var(--blue);
  border-radius:50%;animation:spin .8s linear infinite;margin:24px auto}
.spinner-lg{width:52px;height:52px;border:5px solid var(--blue-light);border-top-color:var(--blue);
  border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.empty{background:#fff;border:2px dashed var(--line);border-radius:var(--radius);
  padding:32px 20px;text-align:center;color:var(--muted);margin-bottom:16px}
.empty .e-ic{font-size:2.4rem;margin-bottom:8px}
.empty .e-t{font-weight:700;color:var(--ink);font-size:1.05rem;margin-bottom:4px}
.error-box{background:var(--red-bg);border:1px solid #fecaca;color:var(--red);
  border-radius:var(--radius-sm);padding:12px 14px;margin-bottom:14px;font-weight:600}

/* ── Charts ─────────────────────────────────────────────── */
.chart-box{position:relative;height:260px;margin:8px 0}
.chart-box.tall{height:320px}
.chart-legend-note{font-size:.8rem;color:var(--muted)}

/* ── Filters ────────────────────────────────────────────── */
.filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:14px;margin-bottom:16px;box-shadow:var(--shadow)}
.filters .frow{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(min-width:720px){.filters .frow{grid-template-columns:repeat(4,1fr)}}
.filters .field{margin-bottom:8px}

/* ── Login ──────────────────────────────────────────────── */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:24px;background:linear-gradient(160deg,var(--navy-dark),var(--navy) 60%,#1e4d8f)}
.login-card{background:#fff;border-radius:20px;box-shadow:var(--shadow-lg);
  padding:28px 24px;width:100%;max-width:420px}
.login-card .brand{text-align:center;margin-bottom:20px}
.login-card .brand img{width:110px;height:110px;border-radius:22px;margin:0 auto 10px;box-shadow:var(--shadow-lg)}
.login-lang{display:flex;justify-content:center;margin-top:18px}

/* ── Language toggle (FR | EN) ──────────────────────────── */
.lang-toggle{display:inline-flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:var(--card)}
.lang-btn{border:none;background:transparent;padding:6px 14px;font-size:.8rem;font-weight:700;cursor:pointer;color:var(--muted)}
.lang-btn.active{background:var(--blue);color:#fff}
.lang-btn:not(.active):hover{background:var(--blue-light)}
.topbar-right{display:flex;align-items:center;gap:8px}

/* ── Misc ───────────────────────────────────────────────── */
.grid2{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:900px){.grid2{grid-template-columns:1fr 1fr}}
.muted{color:var(--muted)}.small{font-size:.85rem}.strong{font-weight:700}
.mt{margin-top:12px}.mb{margin-bottom:12px}.center{text-align:center}
.row-flex{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.pw-box{background:#f8fafc;border:1px dashed var(--blue);border-radius:10px;padding:12px;
  font-family:monospace;font-size:1.05rem;text-align:center;margin:10px 0;user-select:all}
.notif{border-left:5px solid var(--blue)}
.notif.unread{background:#f0f5ff}
.stars{color:#f59e0b;font-size:1.1rem;letter-spacing:2px}
.alert-item{border-left-width:6px}
.tabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:16px;padding-bottom:4px}
.tabs button{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 16px;
  font-weight:700;white-space:nowrap;cursor:pointer;min-height:44px}
.tabs button.active{background:var(--blue);color:#fff;border-color:var(--blue)}

/* ── Print (reports) ────────────────────────────────────── */
@media print{
  .tabbar,.sidebar,.topbar,.btn,.btn-row,.filters,.menu-btn,.toast-root,.modal-scrim,.no-print{display:none!important}
  body{background:#fff}
  .page{max-width:none;padding:0}
  .card,.kpi{box-shadow:none;break-inside:avoid}
}