:root { --accent: #e8500a; --ink: #1d2433; --muted: #6d7686; --surface: #fff; --line: #e7ebf2; --bg: #f5f7fb; }
    * { box-sizing: border-box; }
    body { margin: 0; min-height: 100vh; padding: 20px 14px 148px; background: var(--bg); color: var(--ink); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
    button, input { font: inherit; }
    button { cursor: pointer; }
    .app { max-width: 820px; margin: auto; }
    .brand { margin: 0 0 16px; font-size: clamp(2rem, 8vw, 3rem); line-height: 1; letter-spacing: -.06em; }
    .brand span, .focus, .weight, .series-progress { color: var(--accent); }
    .day-nav { display: flex; gap: 8px; margin: 0 0 16px; overflow-x: auto; padding-bottom: 3px; }
    .day-button { width: 46px; height: 40px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--muted); font-weight: 800; }
    .day-button[aria-current="true"] { color: #fff; background: var(--accent); border-color: var(--accent); }
    .workout-header, .exercise, .timer, .history { background: var(--surface); border: 1px solid var(--line); box-shadow: 0 8px 24px rgba(29,36,51,.06); }
    .workout-header { position: sticky; top: 8px; z-index: 2; padding: 16px; border-radius: 18px; margin-bottom: 18px; }
    .header-row, .exercise-top, .exercise-meta, .series, .timer-actions { display: flex; align-items: center; gap: 10px; }
    .header-row { justify-content: space-between; align-items: flex-start; }
    .focus { margin: 0; font-size: 1.35rem; font-weight: 800; letter-spacing: -.03em; }
    .sub, .section-title, .footer, .exercise-number, .timer-label, .progress-text { color: var(--muted); font-size: .78rem; }
    .stats { display: flex; gap: 8px; }
    .stat { min-width: 59px; padding: 6px 8px; border-radius: 10px; background: #f7f9fc; text-align: center; }
    .stat strong { display: block; font-size: 1.05rem; }
    .progress { height: 8px; margin-top: 14px; overflow: hidden; border-radius: 999px; background: #e9edf3; }
    .progress > span { display: block; height: 100%; background: var(--accent); transition: width .2s; }
    .progress-text { margin: 6px 0 0; }
    .section-title { margin: 22px 0 8px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
    .exercise { padding: 14px; border-radius: 16px; margin-bottom: 9px; }
    .exercise.complete { border-color: color-mix(in srgb, var(--accent) 45%, var(--line)); background: color-mix(in srgb, var(--accent) 4%, white); }
    .exercise-top { justify-content: space-between; align-items: flex-start; }
    .exercise-name { margin: 0; font-size: 1rem; line-height: 1.35; }
    .exercise-number { margin-right: 6px; font-weight: 800; }
    .edit-button, .secondary-button { padding: 7px 10px; border: 1px solid var(--line); border-radius: 9px; background: #f8f9fb; color: var(--muted); font-size: .78rem; }
    .exercise-meta { margin: 11px 0; flex-wrap: wrap; }
    .weight { font-size: 1.35rem; font-weight: 800; }
    .pill { padding: 4px 8px; border-radius: 999px; background: #f1f4f8; color: #536071; font-size: .78rem; }
    .notes { margin: 0; padding-left: 18px; color: #535e6e; font-size: .82rem; line-height: 1.5; }
    .notes li + li { margin-top: 3px; }
    .series { margin-top: 12px; padding-top: 11px; border-top: 1px solid var(--line); flex-wrap: wrap; }
    .series-label { color: var(--muted); font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; }
    .set-button { width: 27px; height: 27px; border: 1px solid #d7dde7; border-radius: 50%; color: #9aa4b3; background: #fff; font-size: .75rem; font-weight: 800; }
    .set-button.done { color: #fff; background: var(--accent); border-color: var(--accent); }
    .series-progress { margin-left: auto; font-weight: 800; }
    .edit-form { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
    .field { display: grid; gap: 4px; color: var(--muted); font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .06em; }
    .field input, .picker-button { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 9px; background: #fbfcfe; color: var(--ink); }
    .picker-button { margin-top: 9px; text-align: left; font-size: .85rem; }
    .form-actions { grid-column: 1 / -1; display: flex; gap: 8px; }
    .primary-button { padding: 9px 12px; border: 0; border-radius: 9px; background: var(--accent); color: #fff; font-weight: 800; }
    .footer { margin: 22px 0 0; text-align: center; }
    .timer { position: fixed; right: 10px; bottom: 10px; left: 10px; z-index: 4; max-width: 800px; margin: auto; padding: 12px; border-radius: 18px; }
    .timer-values { display: grid; grid-template-columns: 1fr 1fr; text-align: center; }
    .timer-value { font-size: 1.55rem; font-weight: 850; }
    .timer-actions { margin-top: 10px; }
    .timer-actions button { flex: 1; padding: 10px; border: 0; border-radius: 10px; color: #fff; background: var(--accent); font-weight: 800; }
    .timer-actions .rest { background: #263246; }
    .timer-actions .reset { flex: 0; background: #edf0f5; color: var(--muted); }
    dialog { width: min(520px, calc(100% - 28px)); border: 0; border-radius: 18px; padding: 18px; box-shadow: 0 18px 55px rgba(0,0,0,.24); }
    dialog::backdrop { background: rgba(20,29,43,.35); }
    .option { display: block; width: 100%; padding: 12px 0; border: 0; border-bottom: 1px solid var(--line); background: transparent; text-align: left; color: var(--ink); }
    .toast { position: fixed; z-index: 9; right: 16px; bottom: 150px; padding: 10px 14px; border-radius: 10px; color: #fff; background: #263246; box-shadow: 0 8px 18px rgba(0,0,0,.18); }
    @media (min-width: 850px) { .timer { left: 50%; right: auto; width: min(calc(100% - 28px), 820px); transform: translateX(-50%); } }
  
    
    #login-screen{

    position:fixed;

    inset:0;

    background:#111827;

    display:flex;

    flex-direction:column;

    justify-content:center;

    align-items:center;

    gap:24px;

    z-index:9999;

}

#login-screen h1{

    color:white;

    font-size:40px;

}

#btn-google-login{

    padding:16px 28px;

    border:none;

    border-radius:12px;

    background:#E8500A;

    color:white;

    font-size:18px;

    cursor:pointer;

}

#btn-google-login:hover{

    opacity:.9;

}