* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
    :root {
      --bg: #fafaf6; --card: #ffffff; --dark: #1a1a1a; --muted: #888888;
      --border: #e8e8e4; --green: #2d6a4f; --green-lt: #2d6a4f18;
      --orange: #e07a00; --orange-lt: #e07a0018;
      --red: #c1121f; --red-lt: #c1121f18;
    }
    body { font-family: 'DM Sans', sans-serif; background: var(--bg); color: var(--dark); }
    input, textarea, button, select { font-family: 'DM Sans', sans-serif; }
    .screen { display: none; padding: calc(24px + env(safe-area-inset-top, 0px)) 20px calc(100px + env(safe-area-inset-bottom, 0px)); max-width: 500px; margin: 0 auto; }
    .screen.active { display: block; }
    .screen-wide { max-width: none; padding: 24px 32px 100px; }

    .input {
      width: 100%; height: 48px; border-radius: 12px; border: 1.5px solid var(--border);
      background: var(--card); padding: 0 16px; font-size: 15px; color: var(--dark); outline: none;
    }
    .input-sm { height: 40px; text-align: center; padding: 0 8px; }
    input[type="number"]::-webkit-inner-spin-button, input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
    input[type="number"] { -moz-appearance: textfield; }
    @keyframes shimmer { 0% { background-position: -200px 0; } 100% { background-position: 200px 0; } }
    .shimmer { background: linear-gradient(90deg, var(--border) 25%, #e8e8e0 50%, var(--border) 75%); background-size: 400px 100%; animation: shimmer 1.2s infinite; border-radius: 8px; }
    .input-filled { background: #f0f5e8 !important; border-color: var(--green) !important; }
    .toggle { position:relative;width:44px;height:24px;background:var(--border);border-radius:12px;cursor:pointer;transition:background 0.2s;flex-shrink:0; }
    .toggle.on { background:var(--green); }
    .toggle::after { content:'';position:absolute;top:2px;left:2px;width:20px;height:20px;background:white;border-radius:50%;transition:transform 0.2s; }
    .toggle.on::after { transform:translateX(20px); }
    textarea.input { height: 70px; padding: 12px 16px; resize: none; }

    .btn {
      width: 100%; height: 50px; border-radius: 12px; border: none;
      font-size: 15px; font-weight: 700; cursor: pointer; display: flex;
      align-items: center; justify-content: center; gap: 8px;
    }
    .btn-dark { background: var(--dark); color: white; }
    .btn-green { background: var(--green); color: white; }
    .btn-red { background: var(--red); color: white; }
    .btn-outline {
      height: 44px; border-radius: 12px; border: 2px dashed var(--border);
      background: transparent; font-size: 14px; font-weight: 600; color: var(--muted);
      cursor: pointer; width: 100%;
    }

    .card {
      border-radius: 14px; border: 1.5px solid var(--border);
      background: var(--card); padding: 16px; margin-bottom: 10px;
    }
    .card-clickable { cursor: pointer; transition: border-color 0.2s; }
    .card-clickable:active { border-color: var(--green); }

    .label {
      font-size: 11px; font-weight: 700; text-transform: uppercase;
      letter-spacing: 1.2px; color: var(--muted);
    }
    .title { font-size: 24px; font-weight: 800; letter-spacing: -0.3px; }
    .subtitle { font-size: 13px; color: var(--muted); }

    .badge {
      display: inline-block; padding: 4px 12px; border-radius: 20px;
      font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px;
    }

    .stats-card {
      background: var(--dark); border-radius: 16px; padding: 20px; color: white; margin-bottom: 16px;
    }
    .stats-row { display: flex; justify-content: space-between; margin-top: 14px; }
    .stat-item { text-align: center; }
    .stat-val { font-size: 26px; font-weight: 800; }
    .stat-label { font-size: 11px; opacity: 0.5; }

    .row { display: flex; gap: 10px; margin-bottom: 12px; }
    .row > * { flex: 1; }
    .row-tight { gap: 8px; }

    .set-grid { display: grid; grid-template-columns: 36px 1fr 1fr 60px 36px; gap: 8px; align-items: center; margin-bottom: 8px; }
    .set-grid-header { padding: 16px 0 8px; }
    .set-grid-readonly { grid-template-columns: 40px 1fr 1fr 60px; gap: 4px; padding: 6px 0; font-size: 14px; }

    .set-num {
      width: 32px; height: 32px; border-radius: 50%; background: var(--dark); color: white;
      display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700;
    }

    .remove-btn {
      width: 32px; height: 32px; border-radius: 8px; border: none;
      background: var(--red-lt); color: var(--red); font-size: 14px; font-weight: 700; cursor: pointer;
    }
    .remove-btn-sm {
      width: 24px; height: 24px; border-radius: 6px; border: none;
      background: var(--red-lt); color: var(--red); font-size: 12px; font-weight: 700;
      cursor: pointer; position: absolute; top: 8px; right: 8px;
    }

    .nav {
      position: fixed; bottom: 0; left: 0; right: 0; background: var(--card);
      border-top: 1px solid var(--border); display: flex; justify-content: space-around;
      padding: 8px 0 max(env(safe-area-inset-bottom), 12px); z-index: 100;
    }
    .nav-btn {
      background: none; border: none; cursor: pointer; display: flex;
      flex-direction: column; align-items: center; gap: 2px;
      color: var(--muted); font-size: 10px; font-weight: 600; padding: 4px 12px;
    }
    .nav-btn.active { color: var(--green); }
    .nav-icon { font-size: 20px; line-height: 1; }

    .link { font-size: 13px; color: var(--green); cursor: pointer; font-weight: 600; margin-bottom: 16px; }
    .rpe-high { color: var(--red); font-weight: 700; }

    .error-msg { padding: 12px; border-radius: 10px; background: var(--red-lt); color: var(--red); font-size: 13px; margin-bottom: 12px; }
    .success-msg { padding: 12px; border-radius: 10px; background: var(--green-lt); color: var(--green); font-size: 13px; margin-bottom: 12px; }

    .empty { text-align: center; padding: 40px 20px; color: var(--muted); font-size: 14px; }

    .exercise-item { position: relative; }
    .exercise-item .remove-btn-sm { display: none; }
    .exercise-item:hover .remove-btn-sm, .exercise-item:active .remove-btn-sm { display: block; }

    .loading-screen {
      min-height: 100vh; display: flex; align-items: center; justify-content: center;
      flex-direction: column; gap: 8px;
    }

    .login-wrap {
      min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
    }
    .login-box { width: 100%; max-width: 380px; }
    .login-logo { text-align: center; margin-bottom: 40px; }
    .login-logo h1 { font-size: 36px; font-weight: 800; letter-spacing: -1px; }
    .login-logo p { font-size: 14px; color: var(--muted); margin-top: 6px; }

    .form-gap { display: flex; flex-direction: column; gap: 14px; }

    .role-btn {
      flex: 1; height: 48px; border-radius: 12px; border: 1.5px solid var(--border);
      background: var(--card); color: var(--dark); font-size: 14px; font-weight: 600;
      cursor: pointer; text-transform: capitalize;
    }
    .role-btn.selected { border: 2px solid var(--dark); background: var(--dark); color: white; }

    .toggle-text { text-align: center; font-size: 13px; color: var(--muted); }
    .toggle-text span { font-weight: 700; color: var(--dark); cursor: pointer; }

    .workout-meta { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 12px; color: var(--muted); }

    @media (max-width: 400px) {
      .set-grid { grid-template-columns: 30px 1fr 1fr 50px 30px; gap: 6px; }
    }