:root{
  --bg:#F5EEEC;
  --surface:#FFFFFF;
  --ink:#241220;
  --ink-soft:#7C6670;
  --primary:#5C1F3A;
  --primary-dark:#331021;
  --accent:#B8863E;
  --success:#4F7A5C;
  --danger:#A23E48;
  --line-grid:#E9DCDA;
  --radius:18px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:'Inter',system-ui,sans-serif;
  -webkit-tap-highlight-color:transparent;
  min-height:100vh;
  overscroll-behavior-y:contain;
}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:600;margin:0 0 6px;letter-spacing:-0.01em;}
.hidden{display:none !important;}
button{font-family:inherit;cursor:pointer;border:none;}
input,select{font-family:inherit;font-size:16px;}
.muted{color:var(--ink-soft);}
.small{font-size:12.5px;}

/* ---------- Auth ---------- */
.auth-wrap{
  max-width:420px;margin:0 auto;padding:56px 24px 32px;
  min-height:100vh; background: linear-gradient(180deg, var(--primary) 0%, var(--primary-dark) 340px, var(--bg) 340px);
  color:#fff;
}
.auth-title{font-size:34px;line-height:1.15;color:#fff;margin-bottom:8px;}
.auth-sub{color:#E8D3DC;margin-bottom:28px;}
.tabs{display:flex;background:rgba(255,255,255,.12);border-radius:999px;padding:4px;margin-bottom:20px;}
.tab{flex:1;padding:10px;border-radius:999px;background:transparent;color:#fff;font-weight:600;opacity:.7;}
.tab.active{background:#fff;color:var(--primary-dark);opacity:1;}
.auth-form{display:flex;flex-direction:column;gap:10px;}
.auth-form.hidden{display:none;}
.auth-form input{padding:14px 16px;border-radius:14px;border:none;background:var(--surface);color:var(--ink);}
.auth-error{color:#FFD3D9;font-size:13px;min-height:16px;}
.auth-offline-note{margin-top:24px;font-size:12.5px;color:#E8D3DC;line-height:1.5;}

/* ---------- App shell ---------- */
.screen{min-height:100vh;}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 20px 14px;position:sticky;top:0;background:var(--bg);z-index:5;
}
.brand{font-family:'Fraunces',serif;font-weight:600;font-size:20px;color:var(--primary);}
.brand span{color:var(--accent);}
.sync-badge{font-size:10.5px;font-weight:700;letter-spacing:.06em;padding:5px 10px;border-radius:999px;background:#EFE0DC;color:var(--ink-soft);}
.sync-badge.ok{background:#E1EEE3;color:var(--success);}
.sync-badge.off{background:#F5DEDE;color:var(--danger);}
.sync-badge.syncing{background:#F1E6D3;color:var(--accent);}

.view{padding:4px 20px 100px;max-width:640px;margin:0 auto;}
.view-title{margin:8px 0 16px;font-size:22px;}

.bottomnav{
  position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--surface);
  border-top:1px solid var(--line-grid);padding:8px 6px calc(8px + env(safe-area-inset-bottom));
  z-index:10;
}
.bottomnav button{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;
  background:transparent;color:var(--ink-soft);font-size:10.5px;padding:6px 0;border-radius:12px;
}
.bottomnav button.active{color:var(--primary);background:#F3E6EC;}

/* ---------- Cards & controls ---------- */
.card{background:var(--surface);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:0 1px 2px rgba(36,18,32,.04);}
.center-card{text-align:center;}
.hero-card{background:linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);color:#fff;margin-top:8px;}
.hero-card h2{color:#fff;}
.eyebrow{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);margin-bottom:4px;}
.hero-card .eyebrow{color:#E8C98F;}

.btn-primary{
  width:100%;padding:15px;border-radius:14px;background:var(--primary);color:#fff;font-weight:600;font-size:15px;margin-top:14px;
}
.hero-card .btn-primary{background:#fff;color:var(--primary-dark);}
.btn-secondary{width:100%;padding:13px;border-radius:14px;background:#F3E6EC;color:var(--primary-dark);font-weight:600;margin-top:10px;text-align:center;display:block;}
.btn-ghost{padding:10px 14px;border-radius:12px;background:transparent;color:var(--ink-soft);border:1px solid var(--line-grid);font-weight:600;font-size:13px;}
.btn-text{width:100%;padding:10px;background:transparent;color:var(--ink-soft);font-size:13px;margin-top:6px;}
.file-btn{cursor:pointer;}

.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px;}
.stat{background:var(--surface);border-radius:14px;padding:14px 8px;text-align:center;}
.stat-num{font-family:'Fraunces',serif;font-size:24px;color:var(--primary);}
.stat-label{font-size:10.5px;color:var(--ink-soft);margin-top:2px;}

/* ---------- Workout mode ---------- */
.workout-progress{font-size:12px;color:var(--ink-soft);margin:12px 0 8px;font-weight:600;}
.exercise-card h2{font-size:22px;}
.ref-load{font-size:14px;}
.note{font-size:13px;background:#FBF1D9;color:#7A5C1E;padding:10px 12px;border-radius:10px;margin:10px 0;}
.banner-warning{background:#FBE7C6;color:#7A5217;padding:12px 14px;border-radius:12px;font-size:13px;margin-bottom:10px;}
.link-btn{background:transparent;color:var(--primary);font-weight:600;font-size:13px;padding:0;margin-top:4px;text-decoration:underline;}
.last-perf{background:#F3E6EC;border-radius:12px;padding:10px 12px;font-size:13px;margin:12px 0;}

.set-form{margin-top:14px;display:flex;flex-direction:column;gap:12px;}
.form-row{display:flex;gap:10px;}
.form-row label{flex:1;font-size:12px;color:var(--ink-soft);display:flex;flex-direction:column;gap:4px;}
.form-row input,.form-row select{padding:12px;border-radius:12px;border:1px solid var(--line-grid);}
.set-form > input[type=text]{padding:12px;border-radius:12px;border:1px solid var(--line-grid);}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.chip-label{font-size:12px;color:var(--ink-soft);width:100%;}
.chip{padding:8px 14px;border-radius:999px;background:#F1E9EA;color:var(--ink-soft);font-size:13px;font-weight:600;}
.chip.selected{background:var(--primary);color:#fff;}
.chip.small{font-size:12px;padding:7px 12px;}
.all-sets-done{color:var(--success);font-weight:600;margin-top:14px;}

.set-history{margin-top:14px;display:flex;flex-direction:column;gap:6px;}
.set-row{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;font-size:12.5px;color:var(--ink-soft);background:#FAF5F3;padding:8px 10px;border-radius:10px;}

.exercise-nav{display:flex;gap:8px;margin-top:18px;flex-wrap:wrap;}
.finish-zone{margin-top:6px;}

.timer-overlay{
  position:fixed;inset:0;background:var(--primary-dark);color:#fff;z-index:50;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
}
.timer-circle{
  width:180px;height:180px;border-radius:50%;border:4px solid rgba(255,255,255,.3);
  display:flex;align-items:center;justify-content:center;font-family:'Fraunces',serif;font-size:44px;
}
.timer-presets{display:flex;gap:10px;}
.timer-presets button{padding:10px 16px;border-radius:12px;background:rgba(255,255,255,.15);color:#fff;font-weight:600;}

/* ---------- History ---------- */
.history-list{display:flex;flex-direction:column;gap:8px;}
.history-item{
  display:flex;align-items:center;justify-content:space-between;
  background:var(--surface);padding:14px 16px;border-radius:14px;width:100%;text-align:left;color:var(--ink);
}
.history-item span:last-child{color:var(--ink-soft);font-size:18px;}

/* ---------- Evolução ---------- */
.exercise-select-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px;margin-bottom:4px;}
.exercise-select-row .chip{white-space:nowrap;}
#chart-container canvas, #weight-chart{width:100%;height:auto;}
.compare-row{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px solid var(--line-grid);font-size:14px;}
.compare-row:last-of-type{border-bottom:none;}

@media (min-width:700px){
  .view{padding-top:12px;}
}