/* ── Skip to content ── */
.skip-link{position:absolute;top:-999px;left:0;background:var(--accent);color:#fff;padding:.5rem 1rem;font-size:.85rem;font-weight:700;border-radius:0 0 var(--r) 0;z-index:9999;text-decoration:none}
.skip-link:focus{top:0}

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

:root{
  --bg:#f4f7fc;
  --surface:#ffffff;
  --surface2:#eef2f9;
  --border:rgba(0,0,0,0.07);
  --border2:rgba(0,0,0,0.13);
  --accent:#2563eb;--accent2:#1d4ed8;--accent-lt:rgba(37,99,235,0.09);
  --text:#0f172a;--text2:#475569;--muted:#94a3b8;
  --success:#16a34a;--success-lt:#dcfce7;
  --danger:#dc2626;--danger-lt:#fee2e2;
  --warning:#d97706;--warning-lt:#fef3c7;
  --info:#0284c7;--info-lt:#e0f2fe;
  --r:8px;--rl:16px;--rxl:24px;
  --sh0:0 1px 3px rgba(0,0,0,.06),0 2px 8px rgba(0,0,0,.04);
  --sh1:0 4px 16px rgba(0,0,0,.08),0 1px 4px rgba(0,0,0,.05);
  --sh2:0 12px 48px rgba(0,0,0,.12),0 4px 16px rgba(0,0,0,.07);
  --glow:0 0 28px rgba(37,99,235,.18);
  --fd:'Playfair Display',Georgia,serif;
  --fb:'DM Sans',system-ui,sans-serif;
  --fm:'DM Mono','Courier New',monospace;
  --screen-transition:.2s ease;
}

html{scroll-behavior:smooth}
body{font-family:var(--fb);background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}

/* ── Focus ── */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r)}

/* ── Screens ── */
.screen{display:none;min-height:100vh;opacity:0}
.screen.active{display:flex;flex-direction:column;animation:fadeIn var(--screen-transition) forwards}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* ── Layout ── */
.wrap{max-width:980px;margin:0 auto;padding:0 1.5rem}

/* ── Header ── */
header{
  background:rgba(255,255,255,0.8);
  border-bottom:1px solid var(--border);
  padding:.9rem 0;
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  box-shadow:var(--sh0);
}
.hd{display:flex;align-items:center;justify-content:space-between;max-width:980px;margin:0 auto;padding:0 1.5rem}
.logo{
  font-family:var(--fd);font-size:1.4rem;font-weight:900;line-height:1;
  background:linear-gradient(130deg,var(--accent) 0%,#60a5fa 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.logo small{
  font-weight:600;font-size:.68rem;display:block;font-family:var(--fb);
  letter-spacing:.12em;text-transform:uppercase;
  -webkit-text-fill-color:var(--muted);color:var(--muted);
}

/* ── Typography ── */
h2{font-family:var(--fd);font-size:clamp(1.3rem,4vw,1.75rem);font-weight:700;color:var(--text)}
h3{font-family:var(--fb);font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.13em;color:var(--muted)}

/* ── Buttons ── */
.btn{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.6rem 1.25rem;
  font-family:var(--fb);font-size:.875rem;font-weight:600;
  border:none;border-radius:var(--r);cursor:pointer;
  transition:all .18s;text-decoration:none;white-space:nowrap;line-height:1.3;
}
.btn:disabled{opacity:.38;cursor:not-allowed}

.btn-primary{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent2) 100%);
  color:#fff;
  box-shadow:0 2px 12px rgba(37,99,235,.3);
}
.btn-primary:hover:not(:disabled){
  background:linear-gradient(135deg,#3b82f6 0%,var(--accent) 100%);
  box-shadow:0 4px 20px rgba(37,99,235,.45);
  transform:translateY(-1px);
}

.btn-danger{background:var(--danger);color:#fff;box-shadow:0 2px 10px rgba(220,38,38,.18)}
.btn-danger:hover:not(:disabled){background:#b91c1c;box-shadow:0 4px 18px rgba(220,38,38,.32);transform:translateY(-1px)}

.btn-success{background:var(--success);color:#fff}
.btn-success:hover:not(:disabled){background:#15803d;transform:translateY(-1px)}

.btn-ghost{
  background:var(--surface);
  color:var(--text2);
  border:1px solid var(--border2);
  box-shadow:var(--sh0);
}
.btn-ghost:hover:not(:disabled){background:var(--surface2);color:var(--text);border-color:rgba(37,99,235,.3)}

.btn-sm{padding:.32rem .78rem;font-size:.76rem}
.btn-lg{padding:.82rem 1.85rem;font-size:1rem;border-radius:var(--rl)}
.btn-full{width:100%;justify-content:center}

/* ── Forms ── */
.fg{margin-bottom:.95rem}
label{display:block;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text2);margin-bottom:.35rem}

input[type=text],input[type=email],input[type=password],input[type=number],
input[type=time],input[type=date],input[type=datetime-local],select,textarea{
  width:100%;
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:var(--r);
  color:var(--text);
  font-family:var(--fb);font-size:.92rem;
  padding:.64rem .92rem;
  transition:border-color .15s,box-shadow .15s;
  outline:none;resize:vertical;
  box-shadow:var(--sh0);
}
input:focus,select:focus,textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(37,99,235,.14);
}
input::placeholder,textarea::placeholder{color:var(--muted)}

.fr{display:grid;grid-template-columns:1fr 1fr;gap:.9rem}

/* ── Cards ── */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--rl);
  padding:1.5rem;margin-bottom:1.1rem;
  box-shadow:var(--sh0);
  transition:border-color .2s,box-shadow .2s;
}
.card:hover{border-color:rgba(37,99,235,.25);box-shadow:var(--sh1)}
.card-title{font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-bottom:.9rem;padding-bottom:.55rem;border-bottom:1px solid var(--border)}

/* ── Badges ── */
.badge{display:inline-flex;align-items:center;padding:.22rem .72rem;border-radius:100px;font-size:.67rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.bs{background:var(--success-lt);color:var(--success)}
.bw{background:var(--warning-lt);color:var(--warning)}
.bd{background:var(--danger-lt);color:var(--danger)}
.bi{background:var(--info-lt);color:var(--info)}
.bn{background:var(--surface2);color:var(--text2)}

/* ── Alerts ── */
.alert{padding:.82rem 1rem;border-radius:var(--r);font-size:.87rem;margin-bottom:.9rem;border-left:3px solid}
.as{background:var(--success-lt);border-color:var(--success);color:var(--success)}
.ad{background:var(--danger-lt);border-color:var(--danger);color:var(--danger)}
.aw{background:var(--warning-lt);border-color:var(--warning);color:var(--warning)}
.ai{background:var(--info-lt);border-color:var(--info);color:var(--info)}

/* ── Tables ── */
.tw{overflow-x:auto;border-radius:var(--rl);border:1px solid var(--border);box-shadow:var(--sh0)}
table{width:100%;border-collapse:collapse;font-size:.86rem}
th{text-align:left;padding:.65rem .95rem;font-size:.66rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);background:var(--surface2);border-bottom:1px solid var(--border)}
td{padding:.75rem .95rem;border-bottom:1px solid var(--border);vertical-align:middle;color:var(--text)}
tr:last-child td{border-bottom:none}
tr:hover td{background:var(--surface2)}

/* ── Login background (blobs) ── */
.login-bg{
  position:fixed;inset:0;z-index:-1;
  background:var(--bg);
  overflow:hidden;
}
.login-bg::before{
  content:'';position:absolute;
  width:700px;height:700px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.12) 0%,transparent 65%);
  top:-200px;right:-150px;
  filter:blur(60px);pointer-events:none;
}
.login-bg::after{
  content:'';position:absolute;
  width:550px;height:550px;border-radius:50%;
  background:radial-gradient(circle,rgba(96,165,250,.1) 0%,transparent 65%);
  bottom:-120px;left:-100px;
  filter:blur(60px);pointer-events:none;
}

/* ── Login screen ── */
.lw{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:2.5rem 1.5rem}
.ll{
  font-family:var(--fd);
  font-size:clamp(2.6rem,8vw,4.4rem);
  font-weight:900;line-height:1;text-align:center;margin-bottom:.35rem;
  background:linear-gradient(135deg,var(--accent) 0%,#3b82f6 55%,#60a5fa 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.ls{font-size:.68rem;text-transform:uppercase;letter-spacing:.24em;color:var(--muted);text-align:center;margin-bottom:2.5rem}
.lb{
  background:rgba(255,255,255,0.85);
  border:1px solid var(--border);
  border-radius:var(--rxl);
  padding:2.1rem;width:100%;max-width:420px;
  backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  box-shadow:0 20px 60px rgba(37,99,235,.1),var(--sh2);
}

/* ── Admin nav ── */
.anav{display:flex;gap:.35rem;padding:.65rem 0;overflow-x:auto;margin-bottom:1.5rem;border-bottom:1px solid var(--border)}
.anb{
  flex-shrink:0;padding:.38rem .95rem;
  font-family:var(--fb);font-size:.74rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;
  border:1px solid transparent;border-radius:100px;
  background:transparent;color:var(--muted);cursor:pointer;transition:all .15s;
}
.anb:hover{color:var(--text2);background:var(--surface2)}
.anb.active{background:var(--accent-lt);color:var(--accent);border-color:rgba(37,99,235,.25)}
.atab{display:none}.atab.active{display:block}

/* ── Class cards (aulas) ── */
.cc{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--rl);
  padding:1.1rem 1.45rem;margin-bottom:.75rem;
  box-shadow:var(--sh0);
  display:flex;align-items:center;gap:1.1rem;flex-wrap:wrap;
  transition:border-color .2s,box-shadow .2s;
}
.cc:hover{border-color:rgba(37,99,235,.3);box-shadow:var(--sh1)}
.ccl{flex:1;min-width:160px}
.ccd{font-family:var(--fd);font-size:1.18rem;font-weight:700;color:var(--accent);line-height:1;margin-bottom:.1rem}
.ccn{font-size:.92rem;font-weight:600;color:var(--text);margin-bottom:.12rem}
.ccm{font-family:var(--fm);font-size:.73rem;color:var(--muted)}
.cca{display:flex;gap:.45rem;flex-wrap:wrap;align-items:center}

/* ── Check-in card (aluno) ── */
.ch{
  background:linear-gradient(135deg,rgba(37,99,235,.07) 0%,rgba(96,165,250,.04) 100%);
  border:1px solid rgba(37,99,235,.18);
  border-radius:var(--rxl);
  padding:1.45rem 1.65rem;margin-bottom:.9rem;
  position:relative;overflow:hidden;
  box-shadow:var(--sh0);
  transition:border-color .2s,box-shadow .2s;
}
.ch:hover{border-color:rgba(37,99,235,.35);box-shadow:var(--glow)}
.ch::before{
  content:'';position:absolute;right:-40px;top:-40px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(37,99,235,.08),transparent 70%);
  pointer-events:none;
}
.ch-day{font-size:.67rem;font-weight:700;text-transform:uppercase;letter-spacing:.16em;color:var(--accent);margin-bottom:.14rem}
.ch-name{font-family:var(--fd);font-size:1.3rem;font-weight:700;color:var(--text);margin-bottom:.1rem}
.ch-time{font-family:var(--fm);font-size:clamp(1.5rem,5vw,2.1rem);font-weight:500;color:var(--accent);line-height:1;margin-bottom:.45rem}
.ch-date{font-size:.78rem;color:var(--muted);margin-bottom:.85rem}
.sb{height:5px;background:var(--surface2);border-radius:3px;overflow:hidden;margin-top:.3rem}
.sbf{height:100%;background:var(--success);border-radius:3px;transition:width .4s}
.sbf.warn{background:var(--accent)}.sbf.full{background:var(--danger)}

/* ── Pending screen ── */
.pw{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:2rem}

/* ── Check-in list ── */
.cl{display:flex;flex-direction:column;gap:.4rem}
.ci{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:.62rem .92rem;
  box-shadow:var(--sh0);
}
.cin{font-weight:600;font-size:.87rem;color:var(--text)}
.cit{font-family:var(--fm);font-size:.71rem;color:var(--muted)}

/* ── Modals ── */
.mo{
  display:none;position:fixed;inset:0;
  background:rgba(15,23,42,.45);z-index:1000;
  align-items:center;justify-content:center;padding:1.1rem;
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
}
.mo.open{display:flex}
.md{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--rxl);
  padding:2rem;width:100%;max-width:540px;
  box-shadow:var(--sh2);
  animation:su .2s ease;max-height:92vh;overflow-y:auto;
}
@keyframes su{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:translateY(0)}}
.mt{font-family:var(--fd);font-size:1.4rem;font-weight:700;margin-bottom:.95rem;color:var(--text)}
.ma{display:flex;gap:.65rem;justify-content:flex-end;margin-top:1.3rem;flex-wrap:wrap}

/* ── Toast ── */
#tc{position:fixed;bottom:1.5rem;right:1.5rem;z-index:9999;display:flex;flex-direction:column;gap:.45rem;max-width:calc(100vw - 3rem)}
.toast{
  padding:.82rem 1.1rem;border-radius:var(--rl);font-size:.85rem;font-weight:600;
  box-shadow:var(--sh1);max-width:320px;animation:ti .2s ease;word-break:break-word;
}
@media(max-width:480px){#tc{right:.9rem;left:.9rem;max-width:100%}.toast{max-width:100%}}
@keyframes ti{from{opacity:0;transform:translateX(14px)}to{opacity:1;transform:translateX(0)}}
.ts{background:#fff;border:1px solid var(--success);color:var(--success);box-shadow:0 4px 16px rgba(22,163,74,.15)}
.td{background:#fff;border:1px solid var(--danger);color:var(--danger);box-shadow:0 4px 16px rgba(220,38,38,.15)}
.tw2{background:#fff;border:1px solid var(--warning);color:var(--warning);box-shadow:0 4px 16px rgba(217,119,6,.15)}
.ti{background:#fff;border:1px solid var(--info);color:var(--info);box-shadow:0 4px 16px rgba(2,132,199,.15)}

/* ── Password display ── */
.pwr{
  font-family:var(--fm);
  background:var(--accent-lt);
  border:1.5px dashed rgba(37,99,235,.3);
  border-radius:var(--r);padding:.68rem .95rem;
  font-size:1.15rem;letter-spacing:.2em;color:var(--accent);
  text-align:center;margin:.65rem 0;user-select:all;
}

/* ── Clock ── */
.clk{font-family:var(--fm);font-size:.77rem;color:var(--muted);background:var(--surface2);padding:.28rem .7rem;border-radius:var(--r);border:1px solid var(--border)}

/* ── Calendar ── */
.cal-wrap{background:var(--surface);border:1px solid var(--border);border-radius:var(--rxl);overflow:hidden;box-shadow:var(--sh0);margin-bottom:1.1rem}
.cal-header{
  display:flex;align-items:center;justify-content:space-between;padding:.9rem 1.3rem;
  background:linear-gradient(135deg,var(--accent) 0%,#3b82f6 100%);
  border-bottom:1px solid rgba(37,99,235,.2);
}
.cal-header h2{font-size:1.05rem;color:#fff;font-family:var(--fd)}
.cal-nav{background:rgba(255,255,255,.2);border:none;color:#fff;width:32px;height:32px;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:background .15s}
.cal-nav:hover{background:rgba(255,255,255,.35)}
.cal-grid{display:grid;grid-template-columns:repeat(7,1fr)}
.cal-dow{text-align:center;padding:.5rem .2rem;font-size:.63rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--surface2);border-bottom:1px solid var(--border)}
.cal-cell{min-height:52px;padding:.35rem .32rem;border-right:1px solid var(--border);border-bottom:1px solid var(--border);cursor:pointer;transition:background .12s;position:relative;font-size:.8rem;color:var(--text2)}
.cal-cell:nth-child(7n){border-right:none}
.cal-cell:hover{background:var(--accent-lt)}
.cal-cell.other{color:var(--muted);background:rgba(0,0,0,.02)}
.cal-cell.today{background:rgba(37,99,235,.06)}
.cal-cell.today .cal-day{font-weight:700;color:var(--accent)}
.cal-cell.selected{background:var(--accent-lt);outline:2px solid rgba(37,99,235,.4);outline-offset:-2px}
.cal-cell.has-class{border-top:2px solid var(--accent)}
.cal-cell.has-treino .cal-day::after{content:'✎';font-size:.5rem;color:var(--accent);margin-left:.2rem;vertical-align:super}
.cal-day{font-weight:600;display:block;margin-bottom:.18rem;color:var(--text)}
.cal-dots{display:flex;flex-wrap:wrap;gap:2px;margin-top:.15rem}
.cal-dot{width:6px;height:6px;border-radius:50%;background:var(--accent);flex-shrink:0}
.cal-dot.ci-dot{background:var(--success)}
.day-panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--rl);padding:1.25rem 1.45rem;margin-bottom:1.1rem;box-shadow:var(--sh0)}
.day-panel-title{font-family:var(--fd);font-size:1.1rem;font-weight:700;color:var(--accent);margin-bottom:.9rem}
.treino-area{width:100%;min-height:100px;background:var(--surface2);border:1px solid var(--border2);border-radius:var(--r);padding:.72rem .92rem;font-family:var(--fb);font-size:.9rem;color:var(--text);resize:vertical;outline:none;transition:border-color .15s,box-shadow .15s}
.treino-area:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.treino-saved{font-size:.74rem;color:var(--success);margin-top:.35rem;display:none}

/* ── Utilities ── */
.mt1{margin-top:.5rem}.mt2{margin-top:1rem}.mt3{margin-top:1.5rem}
.mb1{margin-bottom:.5rem}.mb2{margin-bottom:1rem}
.fx{display:flex}.fxc{display:flex;align-items:center}
.fxb{display:flex;align-items:center;justify-content:space-between}
.g1{gap:.5rem}.g2{gap:1rem}.fxw{flex-wrap:wrap}
.tm{color:var(--muted);font-size:.86rem}.tsm{font-size:.8rem}
.sep{height:1px;background:var(--border);margin:1.1rem 0}
.sp{padding:1.65rem 0}

/* ── Loading ── */
.loading{position:fixed;inset:0;background:rgba(244,247,252,.92);z-index:5000;display:none;align-items:center;justify-content:center;font-family:var(--fm);color:var(--accent);font-size:1.1rem;letter-spacing:.1em}
.loading.active{display:flex}

/* ── Responsive ── */
@media(max-width:760px){
  .ll{font-size:2.8rem}
  .fr{grid-template-columns:1fr}
  .cc{flex-direction:column;align-items:flex-start}
  table{font-size:.78rem}
  th,td{padding:.5rem .65rem}
  .cal-cell{min-height:40px;font-size:.74rem}
  .ch-time{font-size:1.6rem}
  #a-grid{grid-template-columns:1fr !important}
}