:root{--bg:#12151a;--panel:#171b22;--grid:#232935;--text:#e6e9ef;--text-dim:#8b93a3;--stat-line:#6f7889;--metric-pace:#4cc9f0;--metric-heartrate:#ef476f;--metric-power:#ffd166;--metric-cadence:#06d6a0;--metric-altitude:#9b8cff;--danger:#ef476f;--success:#06d6a0;--panel-gap:4px;--app-header-h:48px;--radius:6px;--font-ui:system-ui, -apple-system, "Segoe UI", sans-serif;--font-data:"IBM Plex Mono", ui-monospace, "SF Mono", monospace}*,:before,:after{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:var(--font-ui);margin:0}button,input{font-family:inherit}:focus-visible{outline:2px solid var(--metric-pace);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}.app{flex-direction:column;min-height:100svh;display:flex}.app-header{z-index:10;min-height:var(--app-header-h);background:var(--bg);border-bottom:1px solid var(--grid);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 24px;padding:12px 24px;transition:background .2s,border-color .2s;display:flex;position:sticky;top:0}.app-header--faded{background:0 0;border-bottom-color:#0000}.app-header--faded:hover,.app-header--faded:focus-within{background:var(--bg);border-bottom-color:var(--grid)}.app-header h1{letter-spacing:-.2px;align-items:center;gap:8px;margin:0;font-size:20px;font-weight:600;display:inline-flex}.brand-mark{color:var(--metric-pace);flex:none}.app-header--faded h1{background:color-mix(in srgb, var(--bg) 80%, transparent);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border-radius:var(--radius);margin:-4px -10px;padding:4px 10px}.app-header--faded:hover h1,.app-header--faded:focus-within h1{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0}.app-header--faded .about-link{opacity:0}.app-header--faded:hover .about-link,.app-header--faded:focus-within .about-link{opacity:1}.app-header__title{align-items:baseline;gap:12px;display:flex}.about-link{font:inherit;color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:0;font-size:13px;text-decoration:none;transition:opacity .2s}.about-link:hover{color:var(--text)}main{flex-direction:column;flex:1;gap:16px;padding:24px;display:flex}.loading-indicator{color:var(--text-dim);font-family:var(--font-data)}.error-state{background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);text-align:center;max-width:480px;margin:48px auto;padding:32px}.error-state h2{margin:0 0 16px;font-size:18px;font-weight:600}.error-state button{font:inherit;color:var(--bg);background:var(--metric-pace);border-radius:var(--radius);cursor:pointer;border:none;padding:10px 20px}.error-state p{color:var(--text-dim);font-family:var(--font-data);margin:0 0 20px}.load-activity-bar{opacity:1;flex-wrap:wrap;align-items:center;gap:8px;max-height:48px;transition:opacity .2s,max-height .2s;display:flex;overflow:hidden}.app-header--faded .load-activity-bar{opacity:0;pointer-events:none;max-height:0}.app-header--faded:hover .load-activity-bar,.app-header--faded:focus-within .load-activity-bar{opacity:1;pointer-events:auto;max-height:48px}.empty-state{text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;padding:48px 24px;display:flex}.empty-state h2{margin:0;font-size:24px;font-weight:600}.empty-state__hint{max-width:42ch;color:var(--text-dim);margin:0;font-size:13px;line-height:1.6}.file-drop-zone{border:1px dashed var(--grid);border-radius:var(--radius);transition:border-color .15s,background .15s;display:inline-flex;position:relative}.file-drop-zone label{color:var(--text-dim);cursor:pointer;padding:8px 14px;font-size:13px;display:block}.file-drop-zone input[type=file]{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.file-drop-zone input[type=file]:focus-visible+label{outline:2px solid var(--metric-pace);outline-offset:2px}.file-drop-zone:has(input[type=file]:focus-visible){outline:2px solid var(--metric-pace);outline-offset:2px}.file-drop-zone--hero{background:var(--panel);border-width:2px;width:100%;max-width:560px;display:block}.file-drop-zone--hero:hover{border-color:var(--metric-pace)}.file-drop-zone--hero label{color:var(--text);padding:48px 24px;font-size:16px}.file-drop-zone__title,.file-drop-zone__hint{display:block}.file-drop-zone__hint{color:var(--text-dim);margin-top:6px;font-size:13px}.file-drop-zone--active{border-color:var(--metric-pace);background:#4cc9f014}.activity-header{align-items:center;gap:12px;display:flex}.activity-header h2{margin:0;font-size:16px;font-weight:600}.sport-chip{font-family:var(--font-data);color:var(--text-dim);background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);padding:2px 10px;font-size:12px}.control-panel{background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);padding:16px}.control-panel__summary{cursor:pointer;color:var(--text-dim);padding:4px 0;font-size:13px}.control-panel__summary:hover{color:var(--text)}.control-panel[open] .control-panel__summary{margin-bottom:12px}.control-panel__body{flex-direction:column;gap:12px;display:flex}.metric-controls{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.metric-control-row{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.metric-toggle{cursor:pointer;align-items:center;gap:8px;display:flex}.metric-toggle:before{content:"";background:var(--metric-color);border-radius:50%;width:10px;height:10px}.stat-checkboxes{font-family:var(--font-data);color:var(--text-dim);gap:12px;display:flex}.stat-checkbox{cursor:pointer;align-items:center;gap:4px;display:flex}.x-axis-mode-switch{gap:4px;display:inline-flex}.x-axis-mode-switch button{font:inherit;color:var(--text-dim);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;background:0 0;padding:6px 14px}.x-axis-mode-switch button[aria-pressed=true]{color:var(--bg);background:var(--text);border-color:var(--text)}.chart-stack{gap:var(--panel-gap);background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);touch-action:pan-y;flex-direction:column;padding:8px;display:flex;position:relative}.zoom-reset{z-index:2;min-height:44px;font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;padding:0 14px;font-size:13px;position:absolute;top:12px;right:12px}.zoom-reset:hover{border-color:var(--metric-pace)}.zoom-hint{z-index:3;pointer-events:none;color:var(--text);background:color-mix(in srgb, var(--bg) 88%, transparent);border:1px solid var(--grid);border-radius:var(--radius);margin:0;padding:10px 16px;font-size:14px;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.metric-panel .recharts-cartesian-axis-tick text,.metric-panel .recharts-label,.metric-panel .recharts-text{fill:var(--text-dim);font-family:var(--font-data);font-variant-numeric:tabular-nums}.stat-summary{flex-wrap:wrap;gap:8px;padding:4px 4px 0;display:flex}.stat-chip{color:var(--text);background:var(--grid);border-radius:var(--radius);font-family:var(--font-data);font-variant-numeric:tabular-nums;padding:2px 8px;font-weight:600}.synced-tooltip{background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);font-family:var(--font-data);font-variant-numeric:tabular-nums;padding:8px 12px}.synced-tooltip-header{color:var(--text-dim);margin-bottom:4px;font-size:12px}.synced-tooltip-value{color:var(--text)}.app-footer{justify-content:center;padding:16px 24px 24px;display:flex}.feedback-trigger{font:inherit;color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:4px 8px;font-size:13px}.feedback-trigger:hover{color:var(--text)}.feedback-dialog{width:min(480px,100vw - 32px);color:var(--text);background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);padding:24px}.feedback-dialog::backdrop{background:#0009}.feedback-dialog__header{justify-content:space-between;align-items:center;gap:16px;display:flex}.feedback-dialog__header h2{margin:0;font-size:18px;font-weight:600}.feedback-dialog__close{font:inherit;color:var(--text-dim);cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:20px;line-height:1}.feedback-dialog__close:hover{color:var(--text)}.feedback-form{flex-direction:column;gap:6px;margin-top:16px;display:flex}.feedback-form label{color:var(--text-dim);margin-top:8px;font-size:13px}.feedback-form input,.feedback-form textarea{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--grid);border-radius:var(--radius);resize:vertical;width:100%;padding:8px 10px;font-size:14px}.feedback-form input[aria-invalid=true],.feedback-form textarea[aria-invalid=true]{border-color:var(--danger)}.feedback-form button[type=submit]{font:inherit;color:var(--bg);background:var(--metric-pace);border-radius:var(--radius);cursor:pointer;border:none;margin-top:16px;padding:10px 20px}.feedback-form button[type=submit]:disabled{background:var(--grid);color:var(--text-dim);cursor:not-allowed}.feedback-form__notice{color:var(--text-dim);background:var(--bg);border-left:2px solid var(--metric-power);border-radius:0 var(--radius) var(--radius) 0;margin:0;padding:8px 12px;font-size:13px;line-height:1.5}.feedback-form__hint{color:var(--text-dim);margin:0;font-size:12px}.feedback-form__error{color:var(--danger);margin:0;font-size:13px}.feedback-form__success{color:var(--success);margin-top:16px}.feedback-form__success p{margin:0 0 8px}.feedback-form__success a{color:var(--success);text-underline-offset:2px;text-decoration:underline}.feedback-form__captcha{min-height:65px;margin-top:16px}.intervals-page{width:100%;max-width:640px;margin:48px auto}.intervals-page h2{margin:24px 0 16px;font-size:18px;font-weight:600}.intervals-page__account{flex-wrap:wrap;align-items:baseline;gap:8px 12px;margin-bottom:20px;display:flex}.intervals-page__disconnect{font:inherit;color:var(--text-dim);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;background:0 0;padding:6px 14px;font-size:13px}.intervals-page__disconnect:hover{color:var(--text)}.intervals-page__hint{min-width:220px;color:var(--text-dim);flex:1;margin:0;font-size:12px;line-height:1.5}.intervals-page__error{color:var(--danger);margin:0 0 16px;font-size:13px}.intervals-page__attribution{color:var(--text-dim);margin:20px 0 0;font-size:12px}.intervals-connect{flex-direction:column;gap:6px;display:flex}.intervals-connect__lead{color:var(--text-dim);margin:0 0 8px;line-height:1.6}.intervals-connect label{color:var(--text-dim);margin-top:8px;font-size:13px}.intervals-connect input{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--grid);border-radius:var(--radius);width:100%;padding:10px;font-size:16px}.intervals-connect input[aria-invalid=true]{border-color:var(--danger)}.intervals-connect__hint{color:var(--text-dim);margin:0;font-size:12px}.intervals-connect__hint a{color:inherit;text-underline-offset:2px;text-decoration:underline}.intervals-connect__error{color:var(--danger);margin:0;font-size:13px}.intervals-connect button[type=submit]{font:inherit;color:var(--bg);background:var(--metric-pace);border-radius:var(--radius);cursor:pointer;border:none;align-self:flex-start;margin-top:12px;padding:12px 20px}.intervals-connect button[type=submit]:disabled{background:var(--grid);color:var(--text-dim);cursor:not-allowed}.intervals-connect__notice{color:var(--text-dim);background:var(--bg);border-left:2px solid var(--metric-power);border-radius:0 var(--radius) var(--radius) 0;margin:16px 0 0;padding:8px 12px;font-size:13px;line-height:1.5}.intervals-search{align-items:stretch;gap:8px;margin-bottom:12px;display:flex}.intervals-search__input{font:inherit;min-width:0;color:var(--text);background:var(--bg);border:1px solid var(--grid);border-radius:var(--radius);flex:1;padding:10px 12px;font-size:16px}.intervals-search__input::placeholder{color:var(--text-dim)}.intervals-search__clear{font:inherit;color:var(--text-dim);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;background:0 0;min-width:44px;font-size:14px}.intervals-search__clear:hover{color:var(--text)}.intervals-list{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.intervals-activity{font:inherit;text-align:left;width:100%;min-height:44px;color:var(--text);background:var(--panel);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;flex-direction:column;gap:4px;padding:10px 12px;display:flex}.intervals-activity:hover:not(:disabled){border-color:var(--metric-pace)}.intervals-activity:disabled{cursor:not-allowed;color:var(--text-dim);background:0 0}.intervals-activity__name{font-size:14px}.intervals-activity__meta{font-family:var(--font-data);color:var(--text-dim);font-size:12px}.intervals-activity__reason{color:var(--text-dim);font-size:12px;font-style:italic}.intervals-list__more{font:inherit;color:var(--text-dim);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;background:0 0;width:100%;min-height:44px;margin-top:16px;padding:10px 16px;font-size:13px}.intervals-list__more:hover:not(:disabled){color:var(--text)}.intervals-list__empty{color:var(--text-dim);margin:0}.empty-state__secondary{font:inherit;color:var(--text);border:1px solid var(--grid);border-radius:var(--radius);cursor:pointer;background:0 0;min-height:44px;margin-top:8px;padding:10px 20px;font-size:14px}.empty-state__secondary:hover{border-color:var(--metric-pace)}@media (width<=720px){.app-header{padding:12px 16px}main{padding:16px}.activity-header{top:var(--app-header-h);z-index:9;background:var(--bg);margin:0 -16px;padding:8px 16px;position:sticky}.empty-state{padding:32px 8px}.file-drop-zone--hero label{padding:32px 16px}.metric-control-row{flex-direction:column;align-items:flex-start}.intervals-page{margin:16px auto}}