tasks/c35/task.json

{
 "task_id": "c35",
 "layer": "composite",
 "seed_type": "brownfield",
 "operators": [
  "make interactive",
  "restructure layout",
  "remove section",
  "wire up data",
  "make responsive"
 ],
 "difficulty": "regular",
 "levers": [
  "state coupling"
 ],
 "domain": "education courses",
 "seed_meta": {
  "repo_src": null,
  "exclude_slug": "react_en_000740",
  "repo_shot": true
 },
 "title": "Owo Classroom: turning the payments landing page into a course catalog site",
 "milestones": [
  {
   "operator": "wire up data",
   "request": "Our business has pivoted — this page is no longer about WhatsApp transfers; it needs to become the \"Owo Classroom\" course site. First step: remove the four big marketing panels in the middle (SEND MONEY / BUY AIRTIME / PAY TV SUBSCRIPTION / SCHEDULE PAYMENTS, along with the phone screenshots inside them) entirely, and replace them with our real course catalog laid out as cards; just show all courses for now.\n\nI've put the courses in order, 42 in total, grouped by stage: Early years 9, Middle school 11, High school 13, Adult interests 9. Each course card must show the course name, stage, instructor, number of lessons, price, difficulty (choose one of the three tiers Beginner / Advanced / Intensive) and enrollment status. Make up the course names and instructor names to match each stage's tone; the 42 course names must not repeat, and neither may the instructor names; give prices by a range per stage — Early years 280 to 460, Middle school 460 to 720, High school 520 to 980, Adult 199 to 599, all in whole tens, no decimals; lessons between 8 and 48.\n\nAlso 7 courses are already full and must be marked \"Full\", distributed as High school 3, Middle school 2, Early years 1, Adult 1; these should be visually weaker than the others so it's obvious at a glance they can't be enrolled.\n\nThere are also three featured courses whose information is fixed and can't change: Python Data Analysis for Beginners (Adult interests, instructor Li Zhiyao, 24 lessons, ¥480, Advanced, enrollable); New Concept English Book 2 Intensive (Middle school, instructor Chen Li, 36 lessons, ¥680, Intensive, enrollable); Middle School Physics: Mechanics Special Topic (Middle school, instructor Zhou Mingyuan, 18 lessons, ¥520, Beginner, enrollable).\n\nDon't improvise on the style — the current dark background + candy colors works well, keep using it."
  },
  {
   "operator": "make interactive",
   "request": "Just laying out 42 cards means parents can't find courses at all — it needs filtering and paging. Above the catalog put a set of controls: a search box (search by course name, results as you type, no need to press Enter), four stage filter entries, three difficulty filters (Beginner/Advanced/Intensive, selecting one leaves only that tier), an \"Only show with seats\" toggle, and a sort (default Recommended, Price low to high, Price high to low). The list holds 12 courses per page with pagination below, and it must show which page you're on and the total number of pages.\n\nFilters and sort must respect each other: at any time, changing a filter, changing the sort, or changing the search term restarts from page 1 — don't stay on an old page number. When a search finds nothing, don't give me a blank page — write a human-readable notice, and the pager shouldn't just sit there inviting clicks either.\n\nAlso add \"My study plan\": every enrollable card gets an add button; after adding, the plan shows the selected courses, the count, and the total amount. The amount rule: under 3 courses, sum at original price; 3 courses or more (inclusive) takes 10% off the whole order, with odd cents dropped, and no decimal prices may appear on the page. Each course in the plan can be removed individually, and there's a one-click clear all. Full courses can't be added to the plan, and clicking the button should do nothing. Clicking add repeatedly on the same course must not produce two rows in the plan."
  },
  {
   "operator": "remove section",
   "request": "The page still has a bunch of leftovers from the previous finance business; clean them all out this time: drop the whole \"Frequently asked questions\" chat Q&A block at the bottom; and also the row of partner bank logos and the line \"WORKS WITH YOUR FAVOURITE BANKS\" — every occurrence on the page must be cleaned up. In the nav, remove FAQs from the original four entries; the remaining Features, Security, Getting started must actually scroll to the corresponding places when clicked — no dead links.\n\nCareful not to collapse the page after deletion: keep the staggered layout of the colorful title blocks and QR at the top, and the SCROLL pill button as-is; clicking SCROLL must scroll to the course catalog. After removing the bank strip, don't leave a big stretch of empty black above and below — tighten the spacing. The footer's brand intro, three columns of links, and social icons must all be kept."
  },
  {
   "operator": "restructure layout",
   "request": "Now the filter bar crammed above the catalog is too long; re-lay it out on desktop: make a filter bar on the left that gathers the search, stage, difficulty, \"Only show with seats\", and sort; on the right is the course grid, three cards per row on wide screens. The filter bar must stay in place as you scroll down — don't let it scroll away. Moving things is moving things, but the filtered results and page numbers must be exactly the same as before; don't miscount during the move.\n\nAlso make the nav bar stick to the top so it's clickable anywhere. Add a \"My study plan\" entry on the right side of the nav, showing the current selected count, updating immediately when courses are added or removed, and clicking it shows the plan details.\n\nI want this entry to be visible at a glance, but at the same time — don't mess up the current color scheme; the few primary colors already on the site are enough, don't pop out any new garish colors; keep the nav's own dark red background, rounded-pill shape and green Try it out button as-is."
  },
  {
   "operator": "make responsive",
   "request": "Finally, handle phones and tablets. On narrow screens cards go single-column, on tablets two per row, and horizontal scrollbars absolutely must not appear. The left filter bar collapses on small screens into a filter panel that can expand and collapse, and after expanding all filters work as usual. On small screens the nav tucks its links into a hamburger; expanding it shows all entries and Try it out.\n\nThe study plan should span the full width on phones to look comfortable. One more detail: after deleting the courses in the plan one by one down to empty, show an empty prompt and display the total amount as zero; at that point the \"Clear\" action makes no sense, so don't let people click it.\n\nMost important, don't let state get lost when resizing — the filters I set and courses I selected on desktop must still be there after I narrow the window; shrinking the screen must not reset it. The top title blocks must not overflow or have their text clipped on phones either."
  }
 ],
 "checklist": [
  {
   "id": "data.count.42",
   "m": 1,
   "dimension": "functional",
   "w": 1.5,
   "description": "The course catalog area renders exactly 42 course cards, and the original four colorful marketing panels SEND MONEY / BUY AIRTIME AND DATA / PAY TV SUBSCRIPTION / SCHEDULE PAYMENTS and their phone screenshots no longer appear anywhere on the page."
  },
  {
   "id": "data.stage.split",
   "m": 1,
   "dimension": "functional",
   "w": 1.5,
   "description": "Counting cards by stage gives exactly: Early years 9, Middle school 11, High school 13, Adult interests 9, summing to 42; and the 42 course names are pairwise distinct, as are the instructor names."
  },
  {
   "id": "data.card.fields",
   "m": 1,
   "dimension": "visual",
   "w": 1.0,
   "description": "Any card simultaneously shows course name, stage, instructor, lesson count (an integer between 8–48), a price starting with ¥, and a difficulty of Beginner/Advanced/Intensive; and sampling each stage, all prices are whole tens within the corresponding range: Early years 280–460, Middle school 460–720, High school 520–980, Adult 199–599."
  },
  {
   "id": "data.full.badge",
   "m": 1,
   "dimension": "functional",
   "w": 1.5,
   "description": "Exactly 7 cards carry the \"Full\" mark, distributed as High school 3, Middle school 2, Early years 1, Adult 1; these 7 are visibly weaker than other cards (e.g. reduced opacity/grayed out/disabled button), and the other 35 are all enrollable."
  },
  {
   "id": "data.seed.three",
   "m": 1,
   "dimension": "coverage",
   "w": 1.5,
   "description": "The three featured courses exist exactly with fields verbatim: Python Data Analysis for Beginners (Adult interests · Li Zhiyao · 24 lessons · ¥480 · Advanced), New Concept English Book 2 Intensive (Middle school · Chen Li · 36 lessons · ¥680 · Intensive), Middle School Physics: Mechanics Special Topic (Middle school · Zhou Mingyuan · 18 lessons · ¥520 · Beginner)."
  },
  {
   "id": "data.style.keep",
   "m": 1,
   "dimension": "visual",
   "w": 1.0,
   "description": "The course catalog keeps the page's original dark background and candy palette (not switched wholesale to light or another scheme); the catalog section's overall container width aligns with the page's main content area, with no horizontal overflow and no obvious left/right offset."
  },
  {
   "id": "inter.page.base",
   "m": 2,
   "dimension": "functional",
   "w": 1.5,
   "description": "With no filters, each page shows 12 courses, the page indicator shows 4 pages in total, page 4 shows exactly 6 courses, and the four pages' content does not overlap and totals 42; when on page 2 or later, switching any filter, switching sort, or modifying the search term returns the page number immediately to 1."
  },
  {
   "id": "inter.filter.stage",
   "m": 2,
   "dimension": "functional",
   "w": 1.5,
   "description": "Selecting stages one by one, the exact result counts are: High school 13 (2 pages, 1 on page 2), Middle school 11 (1 page), Early years 9, Adult interests 9; every result's card stage labels match the selected stage."
  },
  {
   "id": "inter.filter.difficulty",
   "m": 2,
   "dimension": "functional",
   "w": 1.5,
   "description": "After selecting Beginner/Advanced/Intensive respectively, every card's difficulty label in the current results matches the selected tier: the Beginner results contain \"Middle School Physics: Mechanics Special Topic\", the Advanced results contain \"Python Data Analysis for Beginners\", and the Intensive results contain \"New Concept English Book 2 Intensive\"; clearing the difficulty filter restores 42 courses over 4 pages."
  },
  {
   "id": "inter.filter.vacancy.sort",
   "m": 2,
   "dimension": "functional",
   "w": 1.0,
   "description": "Turning on only \"Only show with seats\" gives 35 courses over 3 pages (12/12/11) with no \"Full\" card on any page; adding \"High school\" makes it 10 courses on 1 page (pagination can't go forward); turning the toggle off restores 42 courses over 4 pages. Switching to \"Price low to high\" makes adjacent cards' prices non-decreasing, and switching to \"high to low\" makes them non-increasing."
  },
  {
   "id": "inter.plan.price",
   "m": 2,
   "dimension": "functional",
   "w": 1.5,
   "description": "Adding Python Data Analysis for Beginners (¥480) and New Concept English Book 2 Intensive (¥680) in turn makes the plan show 2 courses with a total of ¥1160; adding Middle School Physics: Mechanics Special Topic (¥520) makes it 3 courses with a total of ¥1512 (10% off 1680 with no decimals); removing any one returns to 2 courses with the total restored to the sum of both original prices; clicking \"Clear\" turns it into 0 courses with a total of ¥0 in one go."
  },
  {
   "id": "inter.plan.edge",
   "m": 2,
   "dimension": "interaction",
   "w": 1.0,
   "description": "Adding a full course has no effect (button disabled, or after clicking the plan's course count and total amount are unchanged); clicking add 3 times in a row on the same enrollable course leaves only 1 row for that course in the plan; typing character by character into the search box requires no Enter press and the list narrows immediately with each input; entering a nonexistent word shows a text empty-state notice with the pager unusable, and clearing the search term restores 42 courses."
  },
  {
   "id": "del.faq.gone",
   "m": 3,
   "dimension": "coverage",
   "w": 1.5,
   "description": "The page no longer contains the \"Frequently asked questions\" heading, chat bubbles, or the question button list; meanwhile the footer CTA and footer are fully retained (brand slogan, three columns of links, three social icons all visible)."
  },
  {
   "id": "del.banks.gone",
   "m": 3,
   "dimension": "functional",
   "w": 1.5,
   "description": "No bank logo icon appears anywhere on the site, and the copy \"WORKS WITH YOUR FAVOURITE BANKS\" cannot be found either (all the multiple places in the original first screen and original panels have been cleared)."
  },
  {
   "id": "del.nav.links",
   "m": 3,
   "dimension": "interaction",
   "w": 1.5,
   "description": "The nav no longer contains the FAQs entry, while Features, Security, Getting started are retained; clicking each one scrolls to a section that actually exists on the page, with no no-reaction click or scrolling to a blank area at the page bottom."
  },
  {
   "id": "del.hero.keep",
   "m": 3,
   "dimension": "visual",
   "w": 1.0,
   "description": "The first screen's colorful title blocks still keep the original three-row staggered arrangement and the combination of purple/orange/yellow/pink color blocks plus the QR square, not recolored or changed to a single row; the SCROLL pill is still there and clicking it scrolls to the course catalog area."
  },
  {
   "id": "del.gap.tight",
   "m": 3,
   "dimension": "visual",
   "w": 1.0,
   "description": "At 1440px wide, the pure-background vertical gap between the bottom of the SCROLL pill and the top of the first course card is less than 400px, and the page has no near-full-screen blank stretch left by section deletion."
  },
  {
   "id": "layout.sidebar.grid",
   "m": 4,
   "dimension": "visual",
   "w": 1.5,
   "description": "At 1440px wide the left filter bar and the right course grid sit side by side, with exactly 3 cards per grid row; while scrolling down through the list, the filter bar stays visible in the viewport."
  },
  {
   "id": "layout.filter.parity",
   "m": 4,
   "dimension": "functional",
   "w": 1.5,
   "description": "The five control groups — search, stage, difficulty, only show with seats, sort — have all moved into the sidebar, with results identical to before the revamp: selecting \"High school\" + \"Only show with seats\" in the sidebar still gives 10 courses on a single page, selecting only \"Intensive\" still leaves only Intensive courses including \"New Concept English Book 2 Intensive\", and with no filters there are still 42 courses over 4 pages."
  },
  {
   "id": "layout.nav.sticky",
   "m": 4,
   "dimension": "interaction",
   "w": 1.0,
   "description": "When scrolled to the middle of the course catalog the nav bar is still fixed and visible, and its dark red background, rounded-pill shape and green \"Try it out\" button look the same as before the revamp, not overridden by new styles."
  },
  {
   "id": "layout.plan.badge",
   "m": 4,
   "dimension": "functional",
   "w": 1.5,
   "description": "The \"My study plan\" entry in the nav initially shows 0; after adding 3 courses it shows 3, and after removing 1 it immediately becomes 2, and this number always matches the number of rows in the plan details."
  },
  {
   "id": "layout.accent.consistent",
   "m": 4,
   "dimension": "visual",
   "w": 1.0,
   "description": "The accent colors used by the plan entry's numeric badge, the selected filter items, and the add buttons all come from the site's existing primary colors (green #84ff00 / magenta #ff009c / yellow #fff527; different elements may use different ones); the page introduces no new high-saturation accent colors beyond these three."
  },
  {
   "id": "resp.mobile.single",
   "m": 5,
   "dimension": "visual",
   "w": 1.5,
   "description": "At 375px wide course cards are arranged in a single column and the page produces no horizontal scrollbar; the filter bar collapses into an expandable filter entry, and after expanding, the five control groups operate normally and it can be collapsed again."
  },
  {
   "id": "resp.tablet.two",
   "m": 5,
   "dimension": "visual",
   "w": 1.0,
   "description": "At 768px wide the course grid has exactly 2 cards per row and the page has no horizontal scrollbar; nav links are tucked into a hamburger entry, and expanding it shows all retained nav entries and the \"Try it out\" button."
  },
  {
   "id": "resp.state.persist",
   "m": 5,
   "dimension": "interaction",
   "w": 1.5,
   "description": "After completing \"filter High school + Only show with seats + add 2 courses\" at desktop width, without refreshing, shrink the window to 375px: the filtered result is still 10 courses, the plan still has 2 courses, and the total amount is exactly the same as before narrowing."
  },
  {
   "id": "resp.plan.empty",
   "m": 5,
   "dimension": "functional",
   "w": 1.5,
   "description": "At 375px wide the study plan panel spans the full screen width; when the plan's courses are deleted one by one down to 0, a text empty-state prompt appears, the total amount shows ¥0, and the \"Clear\" action disappears or is unclickable at that point."
  },
  {
   "id": "resp.hero.fit",
   "m": 5,
   "dimension": "visual",
   "w": 1.0,
   "description": "At 375px wide the first screen's colorful title blocks are entirely within the viewport, all four blocks of text are fully readable, with no horizontal overflow, clipping, or overlap."
  }
 ],
 "inject": null,
 "qc_static": [],
 "review_status": "ok"
}