:root{
  --bg:#131316; --bg2:#1a1a1e; --bg3:#212127; --bg-elev:#26262d;
  --border:#2e2e36; --border-soft:#38383f;
  --accent:#3b82f6; --accent-hover:#5c9bfa; --accent2:#34d399;
  --text:#e8e8ec; --text-dim:#8b8b96; --text-faint:#5f5f6b;
  --warn:#f0b955; --green:#34d399; --red:#f2545b; --pink:#c586c0;
  --radius:12px; --radius-sm:8px;
  --shadow-card:0 1px 2px rgba(0,0,0,.3), 0 8px 24px -8px rgba(0,0,0,.4);
  --shadow-lift:0 4px 16px -4px rgba(59,130,246,.35);
}
*{box-sizing:border-box;}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  min-height:100vh; -webkit-font-smoothing:antialiased;
}

.topbar{
  background:linear-gradient(180deg, var(--bg2) 0%, var(--bg) 100%);
  border-bottom:1px solid var(--border);padding:18px 0;
}
.topbar-inner{display:flex;align-items:center;gap:12px;}
.brand{font-size:19px;font-weight:800;letter-spacing:-.02em;}
.brand .accent{background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent;}
.user-box{margin-left:auto;display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-dim);}
.user-box #usernameTag{color:var(--text);font-weight:600;background:var(--bg3);padding:6px 12px;border-radius:20px;border:1px solid var(--border);}

.wrap{max-width:820px;margin:0 auto;padding:0 18px;}

.tabs{display:flex;gap:4px;margin:20px 0;padding:5px;background:var(--bg2);border:1px solid var(--border);border-radius:14px;overflow-x:auto;}
.tab{padding:10px 16px;font-size:13px;font-weight:500;color:var(--text-dim);cursor:pointer;white-space:nowrap;border-radius:10px;transition:all .15s;}
.tab:hover{color:var(--text);}
.tab.active{color:#fff;background:linear-gradient(135deg,var(--accent),#2563eb);font-weight:600;box-shadow:var(--shadow-lift);}
.tabpanel{display:none;padding-bottom:70px;}
.tabpanel.active{display:block;animation:fadeIn .2s ease;}
@keyframes fadeIn{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:translateY(0);}}

.panel{
  background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;margin-bottom:16px;box-shadow:var(--shadow-card);
}
.panel-label{font-size:12px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.6px;margin-bottom:14px;font-weight:700;}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px;}
.chip{
  border:1px solid var(--border-soft);background:var(--bg3);color:var(--text);
  padding:11px 14px;border-radius:var(--radius-sm);font-size:14px;cursor:pointer;
  text-align:center;user-select:none;transition:all .15s;
}
.chip:hover{border-color:var(--accent);}
.chip.active{background:linear-gradient(135deg,var(--accent),#2563eb);border-color:var(--accent);color:#fff;font-weight:600;box-shadow:var(--shadow-lift);}
.chip.swim.active{background:linear-gradient(135deg,var(--pink),#a855f7);border-color:var(--pink);}
.toggle-group{display:flex;border:1px solid var(--border-soft);border-radius:var(--radius-sm);overflow:hidden;}
.toggle-group .chip{border:none;border-radius:0;flex:1;}

select,
input[type=number],input[type=text],input[type=date],
input[type=password],input[type=email],input[type=tel]{
  width:100%;background:var(--bg3);color:var(--text);
  border:1px solid var(--border-soft);padding:11px 13px;border-radius:var(--radius-sm);
  font-size:14px;font-family:inherit;transition:border-color .15s, box-shadow .15s;
  appearance:none;-webkit-appearance:none;
}
select{
  background-image:url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%238b8b96' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:36px;
}
input::placeholder{color:var(--text-faint);}
input:focus,select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(59,130,246,.2);
}
label.small{font-size:12px;color:var(--text-dim);display:block;margin-bottom:6px;font-weight:500;}

button.primary{
  width:100%;background:linear-gradient(135deg,var(--accent),#2563eb);color:#fff;
  border:none;padding:13px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;
  cursor:pointer;letter-spacing:.2px;transition:all .15s;box-shadow:var(--shadow-lift);
}
button.primary:hover{filter:brightness(1.08);transform:translateY(-1px);}
button.primary:active{transform:translateY(0);}

.btn-danger{
  background:transparent;border:1px solid var(--red);color:var(--red);
  padding:11px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;cursor:pointer;transition:all .15s;
}
.btn-danger:hover{background:var(--red);color:#fff;}
.danger-panel{border-color:rgba(242,84,91,.35);}

.day-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;box-shadow:var(--shadow-card);}
.day-head{background:var(--bg3);padding:12px 16px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border);gap:10px;flex-wrap:wrap;}
.day-head .d{font-weight:700;color:var(--accent2);font-size:13px;letter-spacing:.3px;}
.day-head .g{font-size:12px;color:var(--text-dim);flex:1;}
.checkin-btn{background:var(--bg-elev);border:1px solid var(--green);color:var(--green);padding:7px 14px;border-radius:20px;font-size:12px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .15s;}
.checkin-btn:hover{background:var(--green);color:#0d1117;}
.checkin-btn.done{background:var(--green);color:#0d1117;border-color:var(--green);cursor:default;}
.cardio-block{padding:11px 16px;background:linear-gradient(90deg, rgba(52,211,153,.12), transparent);border-bottom:1px solid var(--border);font-size:13px;color:var(--green);}
.swim-block{padding:16px;font-size:13px;}
.swim-block .tipo{color:var(--pink);font-weight:700;margin-bottom:4px;}
.ex{padding:14px 16px;border-bottom:1px solid var(--border);position:relative;}
.ex:last-child{border-bottom:none;}
.ex.custom{background:linear-gradient(90deg, rgba(52,211,153,.06), transparent);}
.ex-name{font-weight:600;font-size:14px;margin-bottom:4px;display:flex;align-items:center;gap:8px;}
.ex-badge{font-size:9px;background:var(--accent2);color:#0d1117;padding:2px 6px;border-radius:8px;font-weight:700;text-transform:uppercase;letter-spacing:.3px;}
.ex-remove{position:absolute;top:12px;right:16px;background:none;border:none;color:var(--text-faint);cursor:pointer;font-size:16px;line-height:1;padding:4px;border-radius:6px;transition:all .15s;}
.ex-remove:hover{color:var(--red);background:rgba(242,84,91,.12);}
.add-ex-btn{
  width:100%;padding:12px;background:var(--bg3);border:1.5px dashed var(--border-soft);
  color:var(--text-dim);border-radius:var(--radius-sm);font-size:13px;font-weight:600;
  cursor:pointer;transition:all .15s;
}
.add-ex-btn:hover{border-color:var(--accent2);color:var(--accent2);}
.ex-meta{font-size:12px;color:var(--text-dim);margin-bottom:10px;}
.ex-meta b{color:var(--warn);font-weight:600;}
.ex-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap;}
.ex-actions input{width:76px;padding:8px 10px;font-size:13px;}
.btn-sm{background:var(--bg3);border:1px solid var(--border-soft);color:var(--text);padding:7px 12px;border-radius:var(--radius-sm);font-size:12px;cursor:pointer;transition:all .15s;}
.btn-sm:hover{border-color:var(--accent);}
.btn-sm.log{border-color:var(--green);color:var(--green);}
.btn-sm.log:hover{background:var(--green);color:#0d1117;}
.btn-sm.vid{border-color:var(--accent);color:var(--accent);text-decoration:none;}
.btn-sm.vid:hover{background:var(--accent);color:#fff;}
.hist{font-size:11px;color:var(--text-faint);margin-top:8px;}
.current-w{color:var(--accent2);}
.empty{color:var(--text-dim);font-size:13px;text-align:center;padding:36px 10px;}
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%);
  background:var(--bg-elev);color:var(--text);border:1px solid var(--green);
  padding:12px 20px;border-radius:var(--radius-sm);font-size:13px;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .2s, transform .2s;z-index:100;
  box-shadow:0 8px 24px rgba(0,0,0,.4);
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-4px);}

.formrow{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
.loglist{font-size:13px;}
.logitem{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--border);color:var(--text-dim);}
.logitem:last-child{border-bottom:none;}
.logitem b{color:var(--text);}

.profile-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-dim);}
.profile-row:last-child{border-bottom:none;}
.profile-row b{color:var(--text);font-weight:600;}

/* --- estadisticas --- */
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px;}
.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:18px 14px;text-align:center;box-shadow:var(--shadow-card);}
.stat-label{font-size:11px;color:var(--text-dim);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;font-weight:700;}
.stat-value{font-size:28px;font-weight:800;background:linear-gradient(135deg,var(--accent2),#22c1a1);-webkit-background-clip:text;background-clip:text;color:transparent;}
.stat-sub{font-size:11px;color:var(--text-faint);margin-top:4px;}
#penaltyBanner{border-color:var(--red);color:var(--red);font-size:13px;}
.chart-box{position:relative;height:200px;}

/* --- auth --- */
.auth-panel{
  max-width:400px;margin:64px auto 0;
  box-shadow:0 20px 60px -12px rgba(0,0,0,.6);
  border:1px solid var(--border);padding:32px 28px;border-radius:20px;
  background:linear-gradient(180deg, var(--bg2) 0%, var(--bg) 130%);
}
.auth-tagline{text-align:center;color:var(--text-dim);font-size:13px;margin-bottom:24px;}
.auth-tabs{display:flex;background:var(--bg3);border:1px solid var(--border-soft);border-radius:12px;overflow:hidden;margin-bottom:24px;padding:4px;gap:4px;}
.auth-tab{flex:1;text-align:center;padding:10px;font-size:13px;color:var(--text-dim);cursor:pointer;border-radius:9px;font-weight:500;transition:all .15s;}
.auth-tab.active{background:linear-gradient(135deg,var(--accent),#2563eb);color:#fff;font-weight:600;box-shadow:var(--shadow-lift);}
.auth-error{color:var(--red);font-size:12px;margin-top:12px;min-height:14px;text-align:center;}
.auth-hint{font-size:12px;color:var(--text-dim);margin:0 0 16px;line-height:1.6;}
.auth-link{font-size:12px;color:var(--accent);cursor:pointer;text-align:right;font-weight:500;}
.auth-link:hover{color:var(--accent-hover);text-decoration:underline;}
.opt{color:var(--text-faint);font-weight:400;}

.modal-overlay{
  position:fixed;inset:0;background:rgba(8,8,10,.75);backdrop-filter:blur(3px);
  display:flex;align-items:center;justify-content:center;z-index:200;padding:20px;
}
.modal-box{
  background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  padding:28px;max-width:380px;width:100%;text-align:center;
  box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.modal-title{font-size:17px;font-weight:800;color:var(--warn);margin-bottom:12px;}
.modal-box p{font-size:13px;color:var(--text-dim);line-height:1.6;margin-bottom:18px;}
.recovery-code{
  font-size:21px;font-weight:800;color:var(--accent2);letter-spacing:1.5px;
  background:var(--bg3);border:1.5px dashed var(--accent2);border-radius:12px;
  padding:16px;margin-bottom:20px;user-select:all;font-family:ui-monospace,Menlo,Consolas,monospace;
}

@media (max-width:520px){
  .stat-grid{grid-template-columns:1fr;}
  .auth-panel{margin-top:24px;padding:26px 20px;}
}