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

/* ── THEMES ── */
:root,[data-theme="dark"]{
  --bg:#0f1117;--bg-deep:#0a0d12;--card:#1a1d27;--border:#2a2d3a;
  --text:#e8eaf0;--muted:#8b8fa8;
  --accent:#4f9cff;--green:#3dd68c;--orange:#ff9f43;--red:#ff6b6b;
  --btn-text:#0f1117;
  --msg-error-bg:#2a1a1a;--msg-error-border:#5a2a2a;
  --msg-success-bg:#0d2a1a;--msg-success-border:#1a5a30;
  --msg-info-bg:#0d1a2a;--msg-info-border:#1a3a5a;
  --overlay:rgba(0,0,0,.75);--overlay-light:rgba(0,0,0,.55);
  --shadow:0 8px 32px rgba(0,0,0,.5);
}
[data-theme="mid"]{
  --bg:#2c3150;--bg-deep:#242844;--card:#363d62;--border:#4a5278;
  --text:#dde0ee;--muted:#9298b8;
  --accent:#5ea8ff;--green:#3dd68c;--orange:#ff9f43;--red:#ff6b6b;
  --btn-text:#0f1117;
  --msg-error-bg:#3a1e1e;--msg-error-border:#6a3030;
  --msg-success-bg:#182e1e;--msg-success-border:#2a5e38;
  --msg-info-bg:#182038;--msg-info-border:#2a4068;
  --overlay:rgba(0,0,0,.65);--overlay-light:rgba(0,0,0,.45);
  --shadow:0 8px 32px rgba(0,0,0,.4);
}
[data-theme="light"]{
  --bg:#f0f2f8;--bg-deep:#e4e7f0;--card:#ffffff;--border:#d0d4e4;
  --text:#1a1d2e;--muted:#666a84;
  --accent:#2563eb;--green:#16a34a;--orange:#d97706;--red:#dc2626;
  --btn-text:#ffffff;
  --msg-error-bg:#fee2e2;--msg-error-border:#fca5a5;
  --msg-success-bg:#dcfce7;--msg-success-border:#86efac;
  --msg-info-bg:#dbeafe;--msg-info-border:#93c5fd;
  --overlay:rgba(0,0,0,.45);--overlay-light:rgba(0,0,0,.25);
  --shadow:0 8px 32px rgba(0,0,0,.12);
}
[data-theme="light"] .btn{color:#fff}
[data-theme="light"] input[type=date]::-webkit-calendar-picker-indicator{filter:none;opacity:.6}
[data-theme="light"] .card-title{color:#3a3d52}
[data-theme="light"] .section-label{color:#3a3d52}
[data-theme="light"] .ch-section-label{color:#3a3d52}
[data-theme="light"] .empty-state{color:#555870}
[data-theme="light"] .card{border-color:#b8bdd0}
[data-theme="light"] .challenge-item{border-color:#b8bdd0}
[data-theme="light"] .et-row{border-color:#b8bdd0}
[data-theme="light"] .add-challenge-form{background:#ffffff;border-color:#b8bdd0}
[data-theme="light"] .field input,[data-theme="light"] .field select{background:#ffffff;border-color:#b8bdd0}

/* ── THEME SWITCHER ── */
.theme-switcher{display:flex;align-items:center;gap:4px;background:var(--bg-deep);
  border:1px solid var(--border);border-radius:10px;padding:3px;flex-shrink:0}
.theme-btn{background:transparent;border:none;font-size:11px;font-weight:600;
  font-family:inherit;color:var(--muted);padding:4px 10px;border-radius:7px;
  cursor:pointer;transition:all .18s;white-space:nowrap}
.theme-btn:hover{color:var(--text)}
.theme-btn.active{background:var(--card);color:var(--text);box-shadow:0 1px 4px rgba(0,0,0,.25)}

body{background:var(--bg);color:var(--text);font-family:'DM Sans',Arial,sans-serif;min-height:100vh}

/* ── HEADER ── */
.header{background:var(--card);border-bottom:1px solid var(--border);padding:14px 32px;
  display:flex;align-items:center;gap:14px;position:sticky;top:0;z-index:100}
.logo{width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,#4f9cff,#3dd68c);
  display:flex;align-items:center;justify-content:center;font-size:18px}
.header-title{font-size:17px;font-weight:600}
.header-sub{font-size:11px;color:var(--muted);margin-top:1px}
.header-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.dot{width:8px;height:8px;border-radius:50%;background:#555;flex-shrink:0}
.dot.online{background:var(--green)}.dot.partial{background:var(--orange)}
.status-row{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:7px}
.cache-badge{font-size:11px;color:var(--muted);background:var(--bg-deep);
  border:1px solid var(--border);border-radius:8px;padding:4px 10px}

/* ── HEADER PROGRESS BAR ── */
#headerProgress{display:none;background:var(--card);border-bottom:1px solid var(--border);
  padding:10px 32px;flex-direction:column;gap:8px}
#headerProgress.open{display:flex}
#hProgressMsg{font-size:13px;color:var(--muted)}
#hProgressCount{font-size:12px;color:var(--muted)}
.hprog-row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.hprog-track{background:var(--bg-deep);border:1px solid var(--border);
  border-radius:20px;height:8px;overflow:hidden;flex:1}
#hProgressBar{height:100%;width:0%;border-radius:20px;transition:width .4s ease;
  background:linear-gradient(90deg,#4f9cff,#3dd68c)}

/* ── TABS ── */
.tab-bar{display:flex;gap:0;border-bottom:1px solid var(--border);
  background:var(--card);position:sticky;top:65px;z-index:90;padding:0 24px}
.tab-btn{background:transparent;border:none;border-bottom:3px solid transparent;
  color:var(--muted);font-size:13px;font-weight:600;font-family:inherit;
  padding:13px 22px;cursor:pointer;transition:all .18s;white-space:nowrap;margin-bottom:-1px}
.tab-btn:hover{color:var(--text)}
.tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}
.tab-panel{display:none;flex-direction:column;gap:20px;padding:24px}
.tab-panel.active{display:flex}

/* ── LAYOUT ── */
.main{max-width:100%;margin:0;padding:0}

/* ── CARDS ── */
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden}
.card-body{padding:24px 28px}

/* ── FORMS ── */
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:11px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px}
.field input,.field select{
  background:var(--bg-deep);border:1px solid var(--border);color:var(--text);
  padding:9px 13px;border-radius:8px;font-size:14px;font-family:inherit;
  transition:border-color .18s;width:100%}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent)}
.field input[type=password]{letter-spacing:.12em}
.field input[type=number]{-moz-appearance:textfield}
.field input[type=number]::-webkit-inner-spin-button,
.field input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none}
input[type=date]::-webkit-calendar-picker-indicator{filter:invert(1);opacity:.55;cursor:pointer}
input[type=date]::-webkit-calendar-picker-indicator:hover{opacity:1}

/* ── BUTTONS ── */
.btn{background:linear-gradient(135deg,#4f9cff,#3dd68c);color:var(--btn-text);
  border:none;padding:9px 26px;border-radius:8px;font-size:14px;font-weight:600;
  font-family:inherit;cursor:pointer;transition:opacity .18s;white-space:nowrap}
.btn:hover{opacity:.87}.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-sm{padding:7px 18px;font-size:13px}
.btn-outline{background:transparent;border:2px solid var(--accent);color:var(--accent);
  padding:7px 18px;border-radius:8px;font-size:13px;font-weight:600;
  font-family:inherit;cursor:pointer;transition:all .18s;white-space:nowrap}
.btn-outline:hover{background:var(--accent);color:var(--btn-text)}
.btn-green{background:transparent;border:2px solid var(--green);color:var(--green);
  padding:7px 18px;border-radius:8px;font-size:13px;font-weight:600;
  font-family:inherit;cursor:pointer;transition:all .18s;white-space:nowrap}
.btn-green:hover{background:var(--green);color:var(--btn-text)}
.btn-green:disabled{opacity:.4;cursor:not-allowed}
.btn-orange{background:transparent;border:2px solid var(--orange);color:var(--orange);
  padding:7px 18px;border-radius:8px;font-size:13px;font-weight:600;
  font-family:inherit;cursor:pointer;transition:all .18s;white-space:nowrap}
.btn-orange:hover{background:var(--orange);color:var(--btn-text)}
.btn-orange:disabled{opacity:.4;cursor:not-allowed}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--muted);
  padding:7px 16px;border-radius:8px;font-size:13px;font-weight:500;
  font-family:inherit;cursor:pointer;transition:all .18s;white-space:nowrap}
.btn-ghost:hover{border-color:#555;color:var(--text)}

/* ── MESSAGES ── */
.msg-error{color:var(--red);background:var(--msg-error-bg);border:1px solid var(--msg-error-border);
  border-radius:8px;padding:9px 14px;font-size:13px;display:inline-block}
.msg-success{color:var(--green);background:var(--msg-success-bg);border:1px solid var(--msg-success-border);
  border-radius:8px;padding:9px 14px;font-size:13px;display:inline-block}
.msg-info{color:var(--accent);background:var(--msg-info-bg);border:1px solid var(--msg-info-border);
  border-radius:8px;padding:9px 14px;font-size:13px;display:inline-block}

/* ── AUTH ── */
.auth-wrap{display:flex;align-items:center;justify-content:center;
  min-height:calc(100vh - 65px);padding:24px}
.auth-card{background:var(--card);border:1px solid var(--border);border-radius:20px;
  padding:40px 44px;width:100%;max-width:420px}
.auth-logo{width:52px;height:52px;border-radius:14px;margin:0 auto 24px;
  background:linear-gradient(135deg,#4f9cff,#3dd68c);
  display:flex;align-items:center;justify-content:center;font-size:26px}
.auth-title{font-size:22px;font-weight:700;text-align:center;margin-bottom:6px}
.auth-sub{font-size:13px;color:var(--muted);text-align:center;margin-bottom:28px}
.auth-fields{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}
.auth-switch{font-size:13px;color:var(--muted);text-align:center;margin-top:16px}
.auth-switch a{color:var(--accent);cursor:pointer;text-decoration:none}
.auth-switch a:hover{text-decoration:underline}

/* ── GARMIN BANNER ── */
.garmin-banner{background:var(--msg-info-bg);border:1px solid var(--msg-info-border);border-radius:12px;
  padding:18px 22px;display:flex;align-items:center;gap:16px}
.garmin-banner-icon{font-size:28px;flex-shrink:0}
.garmin-banner-text h3{font-size:14px;font-weight:600;margin-bottom:4px}
.garmin-banner-text p{font-size:12px;color:var(--muted);line-height:1.5}
.garmin-form-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin-top:16px}

/* ── CHALLENGES ── */
.challenge-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.challenge-item{display:flex;align-items:center;gap:12px;padding:13px 16px;
  background:var(--bg-deep);border:1px solid var(--border);border-radius:10px;
  cursor:pointer;transition:border-color .18s}
.challenge-item:hover{border-color:#555}
.challenge-item.active{border-color:var(--accent);background:var(--msg-info-bg)}
.ch-radio{width:15px;height:15px;border-radius:50%;border:2px solid #555;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;transition:all .18s}
.challenge-item.active .ch-radio{border-color:var(--accent)}
.ch-radio-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);display:none}
.challenge-item.active .ch-radio-dot{display:block}
.ch-info{flex:1}.ch-name{font-size:14px;font-weight:600}
.ch-meta{font-size:12px;color:var(--muted);margin-top:2px}
.ch-status{font-size:12px;font-weight:600;white-space:nowrap}
.ch-status.ahead{color:var(--green)}.ch-status.behind{color:var(--red)}.ch-status.done{color:var(--muted)}
.ch-actions{display:flex;gap:6px}
.ch-btn{background:transparent;border:1px solid var(--border);color:var(--muted);
  padding:4px 10px;border-radius:6px;font-size:11px;font-family:inherit;cursor:pointer;transition:all .18s}
.ch-btn:hover{border-color:var(--red);color:var(--red)}
.ch-btn.use:hover{border-color:var(--accent);color:var(--accent)}
.add-challenge-form{background:var(--bg-deep);border:1px solid var(--border);border-radius:10px;padding:16px 20px}
.add-form-row{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap}
.empty-state{color:var(--muted);font-size:13px;padding:12px 0}
.section-label{font-size:11px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.7px;margin-bottom:10px}
.ch-section-label{font-size:10px;font-weight:700;color:var(--muted);
  text-transform:uppercase;letter-spacing:.8px;padding:4px 0 8px;margin-top:8px}
.challenge-item.completed{border-color:#3dd68c;opacity:.85}
.challenge-item.failed{border-color:#ff6b6b;opacity:.75}
.ch-status.completed{color:var(--green)}.ch-status.failed{color:var(--red)}
.ch-status.active{color:var(--orange)}

/* ── EVENT TYPES ── */
.et-grid{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}
.et-row{display:flex;align-items:center;gap:12px;padding:10px 14px;
  background:var(--bg-deep);border:1px solid var(--border);border-radius:10px}
.et-swatch{width:22px;height:22px;border-radius:6px;flex-shrink:0;cursor:pointer;
  border:2px solid rgba(255,255,255,0.15);transition:transform .15s;position:relative}
.et-swatch:hover{transform:scale(1.15)}
.et-color-input{position:absolute;opacity:0;width:100%;height:100%;top:0;left:0;cursor:pointer}
.et-name{flex:1;font-size:14px;font-weight:500}
.et-badge{font-size:10px;color:var(--muted);background:var(--border);
  border-radius:4px;padding:2px 7px;font-weight:600;text-transform:uppercase}
.et-del{background:transparent;border:1px solid var(--border);color:var(--muted);
  padding:3px 9px;border-radius:6px;font-size:11px;font-family:inherit;cursor:pointer;transition:all .18s}
.et-del:hover{border-color:var(--red);color:var(--red)}
.et-add-row{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}

/* ── CHART CONTROLS ── */
.controls-grid{display:flex;gap:24px;flex-wrap:wrap;align-items:flex-start}
.divider-v{width:1px;background:var(--border);align-self:stretch;margin:0 4px}
.date-row{display:flex;gap:14px;align-items:flex-end;flex-wrap:wrap}
.quick-btns{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.qbtn{background:var(--bg-deep);border:1px solid var(--border);color:var(--muted);
  padding:5px 13px;border-radius:20px;font-size:12px;font-family:inherit;cursor:pointer;transition:all .18s}
.qbtn:hover{color:var(--text);border-color:var(--accent)}
.action-row{margin-top:20px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* ── CHART ── */
.chart-area{min-height:400px}
#chartDiv{width:100%}
#toggleBar{display:none;gap:10px;flex-wrap:wrap;margin-top:14px;align-items:center}
.placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;
  min-height:300px;gap:10px;color:var(--muted);font-size:14px;text-align:center;line-height:1.8}
.placeholder .icon{font-size:40px;margin-bottom:6px}
.spinner{display:inline-block;width:18px;height:18px;border:3px solid var(--border);
  border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;
  vertical-align:middle;margin-right:8px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ── CONGRATS MODAL ── */
.congrats-overlay{position:fixed;inset:0;z-index:500;display:none;
  align-items:center;justify-content:center;background:var(--overlay)}
.congrats-overlay.open{display:flex}
.congrats-card{background:var(--card);border:2px solid var(--green);border-radius:24px;
  padding:44px 48px;max-width:480px;width:100%;text-align:center;
  animation:popIn .35s cubic-bezier(.34,1.56,.64,1);position:relative;overflow:hidden}
@keyframes popIn{from{transform:scale(.7);opacity:0}to{transform:none;opacity:1}}
.congrats-emoji{font-size:60px;margin-bottom:16px;display:block}
.congrats-title{font-size:26px;font-weight:700;margin-bottom:10px;color:var(--green)}
.congrats-sub{font-size:15px;color:var(--muted);line-height:1.7;margin-bottom:28px}
.congrats-detail{font-size:13px;color:var(--muted);margin-bottom:28px}
.confetti-piece{position:absolute;width:8px;height:8px;border-radius:2px;
  animation:confettiFall linear forwards}
@keyframes confettiFall{
  0%  {transform:translateY(-20px) rotate(0deg);opacity:1}
  100%{transform:translateY(500px) rotate(720deg);opacity:0}
}

/* ── TOAST ── */
.toast-wrap{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);
  z-index:400;display:flex;flex-direction:column;gap:10px;align-items:center;pointer-events:none}
.toast{background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:14px 20px;font-size:13px;color:var(--text);box-shadow:var(--shadow);
  pointer-events:all;max-width:380px;text-align:center;
  animation:toastIn .3s ease;display:flex;align-items:center;gap:10px}
.toast.failed{border-color:var(--red)}
@keyframes toastIn{from{transform:translateY(20px);opacity:0}to{transform:none;opacity:1}}
@keyframes toastOut{from{opacity:1}to{transform:translateY(20px);opacity:0}}

/* ── ACTIVITY PANEL ── */
.panel-overlay{position:fixed;inset:0;background:var(--overlay-light);z-index:200;
  display:none;align-items:flex-end;justify-content:flex-end}
.panel-overlay.open{display:flex}
.activity-panel{background:var(--card);border-left:1px solid var(--border);
  width:420px;max-width:100vw;height:100vh;display:flex;flex-direction:column;
  animation:slideIn .22s ease}
@keyframes slideIn{from{transform:translateX(100%)}to{transform:none}}
.panel-header{padding:20px 24px 16px;border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;flex-shrink:0}
.panel-title{font-size:15px;font-weight:700}
.panel-date{font-size:12px;color:var(--muted);margin-top:2px}
.panel-close{background:transparent;border:none;color:var(--muted);font-size:20px;
  cursor:pointer;padding:4px 8px;border-radius:6px;transition:color .15s}
.panel-close:hover{color:var(--text)}
.panel-body{flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:20px}
.activity-card{background:var(--bg-deep);border:1px solid var(--border);border-radius:12px;padding:16px 18px}
.activity-card-header{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.act-type-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.act-title{font-size:14px;font-weight:600;flex:1}
.act-meta{font-size:12px;color:var(--muted)}
.act-field{margin-bottom:12px}
.act-field label{font-size:11px;font-weight:700;color:var(--muted);text-transform:uppercase;
  letter-spacing:.5px;display:block;margin-bottom:5px}
.act-field select{width:100%;background:var(--card);border:1px solid var(--border);color:var(--text);
  padding:8px 12px;border-radius:8px;font-size:13px;font-family:inherit}
.act-field select:focus{outline:none;border-color:var(--accent)}
.act-field textarea{width:100%;background:var(--card);border:1px solid var(--border);color:var(--text);
  padding:8px 12px;border-radius:8px;font-size:13px;font-family:inherit;
  resize:vertical;min-height:72px;line-height:1.5}
.act-field textarea:focus{outline:none;border-color:var(--accent)}
.act-save-row{display:flex;align-items:center;gap:10px}
.act-save-msg{font-size:12px}
.act-save-msg.ok{color:var(--green)}.act-save-msg.err{color:var(--red)}
.panel-hint{font-size:12px;color:var(--muted);text-align:center;padding:20px 0}

/* ── MODALS ── */
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:none;opacity:1}}
.modal-overlay{position:fixed;inset:0;background:var(--overlay);z-index:300;
  display:none;align-items:center;justify-content:center}
.modal-overlay.open{display:flex}
.modal-card{background:var(--card);border:1px solid var(--border);border-radius:20px;
  padding:32px 36px;width:100%;max-width:460px;animation:slideUp .2s ease}
.modal-title{font-size:18px;font-weight:700;margin-bottom:8px}
.modal-sub{font-size:13px;color:var(--muted);margin-bottom:22px;line-height:1.6}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;align-items:center;margin-top:20px}