:root {
    --color-page:        #f7f7f7;
    --color-surface:     #ffffff;
    --color-ink:         #1a1a1a;
    --color-text:        #555555;
    --color-border:      #555555;
    --color-placeholder: #d9d9d9;
    --color-logo:        #fff1cf;

    --font-body: "Spectral", Georgia, "Times New Roman", serif;

    --header-height: 76px;
    --control-size:  48px;   /* nav buttons, search button, filter button */
    --gap:           6px;
    --card-gap:      10px;
    --card-ratio:    14 / 9; /* both card rows use this, so they stay the same height */
  }

  /* ---------- 2. Base ---------- */
  *, *::before, *::after { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--color-page);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.5;
  }

  button, input { font: inherit; color: inherit; }
  a { color: inherit; text-decoration: none; }
  ul { list-style: none; margin: 0; padding: 0; }

  :focus-visible { outline: 3px solid var(--color-ink); outline-offset: 2px; }

  .icon { width: 70%; height: 70%; fill: currentColor; display: block; }

  /* ---------- 3. Header ---------- */
  .site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    height: var(--header-height);
    padding: 0 0.5rem;
    background: var(--color-surface);
    border-bottom: 2px solid var(--color-ink);
  }

  .site-header__left { display: flex; align-items: center; gap: var(--gap); }

  .logo {
    display: grid;
    place-items: center;
    width: calc(var(--header-height) - 12px);
    height: calc(var(--header-height) - 12px);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-logo);
    color: var(--color-ink);
    margin-right: 0.25rem;
  }

  .main-nav ul { display: flex; gap: var(--gap); }

  .nav-btn {
    display: grid;
    place-items: center;
    width: var(--control-size);
    height: var(--control-size);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    color: var(--color-ink);
  }
  .nav-btn[aria-current="page"] { border-width: 4px; }   /* current page (search) */
  .nav-btn--circle { border: 0; border-radius: 50%; background: transparent; }
  .nav-btn--circle .icon { width: 100%; height: 100%; }

  .profile-icon {
    display: grid;
    place-items: center;
    width: calc(var(--header-height) - 12px);
    height: calc(var(--header-height) - 12px);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-placeholder);
    color: var(--color-ink);
    flex-shrink: 0;
  }

  /* ---------- 4. Search panel ---------- */
  .search-panel {
    display: grid;
    grid-template-columns: var(--control-size) minmax(0, 1fr);
    grid-template-areas:
      "search-btn search-input"
      "filter-btn category-tabs"
      ".          recent";
    column-gap: var(--gap);
    row-gap: 2px;
    padding: 0.75rem 1rem 0;
  }

  .search-btn,
  .filter-btn {
    display: grid;
    place-items: center;
    width: var(--control-size);
    height: var(--control-size);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    color: var(--color-ink);
    cursor: pointer;
  }
  .search-btn { grid-area: search-btn; border-color: var(--color-ink); }
  .filter-btn { grid-area: filter-btn; }

  .search-input {
    grid-area: search-input;
    width: 100%;
    height: var(--control-size);
    padding: 0 0.75rem;
    background: var(--color-surface);
    border: 2px solid var(--color-ink);
    border-radius: 0;
    font-size: 1.1rem;
    color: var(--color-ink);
  }

  /* Category tabs */
  .category-tabs {
    grid-area: category-tabs;
    display: flex;
    overflow-x: auto;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
  }
  .category-tabs button {
    flex: 1 0 auto;
    min-width: 6.5rem;
    min-height: var(--control-size);
    padding: 0.4rem 0.75rem;
    background: transparent;
    border: 0;
    border-left: 1px solid var(--color-border);
    font-size: 1.15rem;
    line-height: 1.2;
    cursor: pointer;
  }
  .category-tabs button:first-child { border-left: 0; }
  .category-tabs button[aria-pressed="true"] { background: var(--color-placeholder); color: var(--color-ink); }

  /* Recent searches (JS can fill .recent-list with items later) */
  .recent {
    grid-area: recent;
    min-height: 4.5rem;
    padding-top: 0.5rem;
  }
  .recent__label { text-decoration: underline; font-size: 1rem; }
  .recent-list { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.5rem; }

  /* ---------- 5. Card rows (Top Searches / Your Next Watch) ---------- */
  .content { padding: 0 1rem 2rem; }

  .row { margin-top: 0.75rem; }
  .row__title {
    margin: 0 0 0.5rem 0.25rem;
    font-size: 1.5rem;
    font-style: italic;
    font-weight: 400;
  }

  .card-row {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--card-gap);
  }

  .card {
    aspect-ratio: var(--card-ratio);
    background: var(--color-placeholder);
    border: 1px solid var(--color-border);
    overflow: hidden;
    /* poster/thumbnail <img> goes inside; keep it object-fit: cover */
  }
  .card img { width: 100%; height: 100%; object-fit: cover; display: block; }

  /* ---------- 6. Responsive ---------- */
  @media (max-width: 900px) {
    .card-row { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  }

  @media (max-width: 600px) {
    :root { --header-height: 64px; --control-size: 40px; }
    .card-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .search-panel, .content { padding-left: 0.5rem; padding-right: 0.5rem; }
  }