@layer components {
  /* ---------- buttons ---------- */
  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
    min-height: var(--tap); padding: 0 var(--s5);
    border: 1px solid transparent; border-radius: var(--r-pill);
    font-weight: 650; font-size: var(--fs-md); letter-spacing: -0.005em;
    text-decoration: none; white-space: nowrap;
    transition: transform var(--t-fast) var(--ease), background-color var(--t-fast), box-shadow var(--t-fast), border-color var(--t-fast);
    user-select: none;
  }
  .btn:active { transform: scale(0.97); }
  .btn--primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 6px 16px -8px color-mix(in srgb, var(--accent) 80%, transparent); }
  .btn--primary:hover { background: color-mix(in srgb, var(--accent) 90%, var(--ink)); }
  .btn--secondary { background: var(--surface); color: var(--ink); border-color: var(--line); box-shadow: var(--shadow-1); }
  .btn--secondary:hover { border-color: color-mix(in srgb, var(--ink) 25%, var(--line)); }
  .btn--ghost { background: transparent; color: var(--ink-2); }
  .btn--ghost:hover { color: var(--ink); background: color-mix(in srgb, var(--ink) 6%, transparent); }
  .btn--danger { background: var(--bad); color: #fff; }
  .btn--danger-ghost { background: transparent; color: var(--bad); border-color: color-mix(in srgb, var(--bad) 35%, transparent); }
  .btn--sm { min-height: 38px; padding: 0 var(--s4); font-size: var(--fs-sm); }
  .btn--block { width: 100%; }

  .icon-btn {
    display: inline-grid; place-items: center; width: var(--tap); height: var(--tap);
    border-radius: 50%; border: 0; background: transparent; color: var(--ink);
    transition: background-color var(--t-fast);
  }
  .icon-btn:hover { background: color-mix(in srgb, var(--ink) 7%, transparent); }
  .icon-btn--glass { background: var(--glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); box-shadow: var(--shadow-2); }

  .chip {
    display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: var(--r-pill);
    font-size: var(--fs-xs); font-weight: 650; background: var(--surface-2); color: var(--ink-2);
  }
  .chip--repeat { background: var(--near-soft); color: var(--near); }

  /* ---------- layout bits ---------- */
  .topbar { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); min-height: 56px; }
  .topbar__title { font-family: var(--font-display); font-weight: 600; font-size: var(--fs-lg); letter-spacing: -0.01em; text-align: center; }
  .topbar__spacer { width: var(--tap); }

  .brand { display: flex; align-items: center; gap: var(--s3); }
  .brand__name { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.45rem; letter-spacing: -0.02em; line-height: 1; }
  .brand__tag { display: block; font-size: var(--fs-xs); color: var(--ink-2); margin-top: 2px; }

  .section { margin-top: var(--s6); }
  .section__title { font-size: var(--fs-sm); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-2); margin-bottom: var(--s3); }
  .eyebrow { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }

  .card { background: var(--surface); border-radius: var(--r-lg); box-shadow: var(--shadow-2); padding: var(--s5); }
  .card + .card { margin-top: var(--s4); }
  .card__title { font-size: var(--fs-md); font-weight: 700; margin-bottom: var(--s2); }

  .notice { display: flex; gap: var(--s2); align-items: flex-start; padding: var(--s3) var(--s4); border-radius: var(--r-md); background: var(--near-soft); color: var(--ink); font-size: var(--fs-sm); margin-bottom: var(--s4); }
  .notice .icon { flex: none; color: var(--near); margin-top: 2px; }

  /* ---------- ring, stars, bars ---------- */
  .ring { position: relative; display: inline-grid; place-items: center; flex: none; }
  .ring svg { position: absolute; inset: 0; }
  .ring__track { fill: none; stroke: color-mix(in srgb, var(--ink) 9%, transparent); }
  .ring__value { fill: none; stroke: var(--accent); stroke-linecap: round; transition: stroke-dasharray 600ms var(--ease); }
  .ring__label { position: relative; font-weight: 750; font-size: 0.95rem; font-variant-numeric: tabular-nums; text-align: center; line-height: 1.1; }
  .ring__label small { display: block; font-weight: 500; color: var(--ink-2); font-size: 0.7rem; }

  .stars { display: inline-flex; gap: 2px; flex: none; }
  .star { fill: color-mix(in srgb, var(--ink) 12%, transparent); }
  .star--on { fill: #f2b01e; }

  .mbar { display: flex; height: 5px; border-radius: 99px; overflow: hidden; background: color-mix(in srgb, var(--ink) 8%, transparent); margin-top: 8px; }
  .mbar__known { background: var(--known); }
  .mbar__learning { background: var(--learning); }

  .cat-ico { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 13px; flex: none; color: var(--ink); background: var(--surface-2); }
  .cat-ico--gory { background: #f3e5da; color: #8a4520; }
  .cat-ico--wyzyny { background: #f6ecd2; color: #8a6510; }
  .cat-ico--niziny { background: #e2f0da; color: #3e7a25; }
  .cat-ico--polwyspy { background: #ecdff3; color: #713a8e; }
  .cat-ico--rzeki, .cat-ico--jeziora { background: #dcebf8; color: #1d5fae; }
  .cat-ico--morza, .cat-ico--zatoki { background: #d8f0f2; color: #0b6f78; }
  .cat-ico--wyspy { background: #f8dfdc; color: #a83224; }
  :root[data-theme='dark'] .cat-ico { background: var(--surface-2) !important; color: var(--ink) !important; }
  @media (prefers-color-scheme: dark) { :root:not([data-theme='light']) .cat-ico { background: var(--surface-2); color: var(--ink); } }

  /* ---------- segmented, switch ---------- */
  .seg { display: inline-flex; flex-wrap: wrap; padding: 4px; gap: 4px; background: var(--surface-2); border-radius: var(--r-pill); border: 1px solid var(--line); }
  .seg__opt { position: relative; }
  .seg__opt input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
  .seg__opt span { display: grid; place-items: center; min-height: 36px; padding: 0 var(--s4); border-radius: var(--r-pill); font-size: var(--fs-sm); font-weight: 600; color: var(--ink-2); transition: background-color var(--t-fast), color var(--t-fast); }
  .seg__opt input:checked + span { background: var(--surface); color: var(--ink); box-shadow: var(--shadow-1), 0 1px 3px rgb(0 0 0 / 0.08); }
  .seg__opt input:focus-visible + span { outline: 2.5px solid var(--focus); outline-offset: 1px; }

  .switch { appearance: none; width: 50px; height: 30px; border-radius: 99px; background: color-mix(in srgb, var(--ink) 18%, transparent); position: relative; flex: none; cursor: pointer; transition: background-color var(--t-med); margin: 0; }
  .switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 24px; height: 24px; border-radius: 50%; background: #fff; box-shadow: 0 1px 3px rgb(0 0 0 / 0.25); transition: transform var(--t-med) var(--ease); }
  .switch:checked { background: var(--ok); }
  .switch:checked::after { transform: translateX(20px); }

  /* ---------- sheet / dialog ---------- */
  .sheet {
    border: 0; padding: 0; margin: auto auto 0; width: 100%; max-width: 560px; max-height: 88dvh;
    background: var(--surface); color: var(--ink); border-radius: var(--r-xl) var(--r-xl) 0 0; box-shadow: var(--shadow-3);
    animation: sheet-in var(--t-med) var(--ease);
    overscroll-behavior: contain;
  }
  .sheet::backdrop { background: rgb(10 20 30 / 0.42); backdrop-filter: blur(2px); animation: fade-in var(--t-med) var(--ease); }
  .sheet.is-closing { animation: sheet-out 180ms ease-in forwards; }
  .sheet.is-closing::backdrop { animation: fade-out 180ms ease-in forwards; }
  .sheet__inner { padding: var(--s3) var(--s5) calc(var(--s5) + env(safe-area-inset-bottom)); }
  .sheet__inner::before { content: ''; display: block; width: 40px; height: 5px; border-radius: 99px; background: var(--line); margin: 0 auto var(--s3); }
  .sheet__head { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); margin-bottom: var(--s4); }
  .sheet__title { font-family: var(--font-display); font-size: var(--fs-xl); font-weight: 600; letter-spacing: -0.015em; }
  @media (min-width: 700px) {
    .sheet { margin: auto; border-radius: var(--r-xl); animation-name: pop-in; }
    .sheet.is-closing { animation-name: pop-out; }
    .sheet__inner::before { display: none; }
    .sheet__inner { padding: var(--s5) var(--s6) var(--s6); }
  }
  .sheet--confirm { max-width: 420px; }
  .confirm__text { font-size: var(--fs-lg); font-weight: 600; margin: var(--s2) 0 var(--s5); }
  .confirm__actions { display: flex; justify-content: flex-end; gap: var(--s2); flex-wrap: wrap; }

  @keyframes sheet-in { from { transform: translateY(100%); } }
  @keyframes sheet-out { to { transform: translateY(100%); } }
  @keyframes pop-in { from { transform: scale(0.96); opacity: 0; } }
  @keyframes pop-out { to { transform: scale(0.96); opacity: 0; } }
  @keyframes fade-in { from { opacity: 0; } }
  @keyframes fade-out { to { opacity: 0; } }

  .toast {
    position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom)); transform: translateX(-50%);
    background: var(--ink); color: var(--bg); padding: 10px 18px; border-radius: var(--r-pill); font-weight: 600; font-size: var(--fs-sm);
    box-shadow: var(--shadow-3); z-index: 50; animation: toast-in var(--t-med) var(--ease);
  }
  .toast.is-out { opacity: 0; transition: opacity 300ms; }
  @keyframes toast-in { from { transform: translate(-50%, 12px); opacity: 0; } }

  /* ---------- rows / cards used on several screens ---------- */
  .row-card {
    display: flex; align-items: center; gap: var(--s3); padding: var(--s3) var(--s4); min-height: 64px;
    background: var(--surface); border-radius: var(--r-md); box-shadow: var(--shadow-1); text-decoration: none;
    border: 1px solid var(--line); transition: transform var(--t-fast) var(--ease), border-color var(--t-fast);
  }
  .row-card:hover { border-color: color-mix(in srgb, var(--ink) 22%, var(--line)); }
  .row-card:active { transform: scale(0.99); }
  .row-card__ico { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 12px; flex: none; }
  .row-card__ico--warn { background: var(--near-soft); color: var(--near); }
  .row-card__text { flex: 1; display: grid; gap: 1px; }
  .row-card__text span { font-size: var(--fs-sm); color: var(--ink-2); }
  .row-card__chev { color: var(--ink-3); }

  .btn-row { display: flex; flex-wrap: wrap; gap: var(--s2); }
  .field { display: grid; gap: var(--s2); margin-top: var(--s4); }
  .field__label { font-size: var(--fs-sm); font-weight: 650; color: var(--ink-2); }
}