Claude Haiku 5.5

The user wants one HTML file with four weather cards, built with HTML and CSS only, with animated icons made from elements and pseudo-elements, a responsive grid, hover lift, keyframes, and reduced-motion support. The system prompt requires a single fenced html block with no surrounding text, and it also contains some game-related rules I still need to check.

I'm sketching the layout now: a dark slate background with a "Weather Now" heading, and a grid that shows four cards per row on desktop, two on tablet, and one on mobile. Each card will hold an animated icon, the city name, the temperature, and a short description.

I'm now choosing card backgrounds and text colors, with a warm sunny gradient that needs dark text for contrast and a deeper blue-slate gradient for rainy cards that can carry white text.

Still working out the sun icon, with a core circle and rays spun around it.

Next I'm working out the sun rays: each one is a thin span placed around the center and rotated by a custom property, which keeps the markup minimal while still being pure HTML and CSS.

Still working out the ray geometry: each ray sits at the center of a spinning wrapper, pushed outward from the core, so the spin carries them all around the sun.

I'm working out the ray placement now: each ray is shifted to the container's center and then rotated, but rotation pivots on the ray's own center rather than the sun's, so the rays would just spin in place.

I'm checking how the ray transform actually composes: the translate, the rotation, and the upward offset all happen around the ray's own center, not the sun's, so the placement needs a different pivot.

Still writing the ray wrappers...

Still writing the sun rays...

Still writing the sun rays...

Still writing the cloud shapes...

Still writing the snowflake styles...

Still writing the sun ray spinners...

Still writing the snowflake styles...

Still writing the snowflake...

Still writing the flake motion...

Still working out the snowflake motion: the outer flake falls, a middle layer sways it side to side with the individual `translate` property so it doesn't clash with the fall, and the innermost piece spins.

Still writing the snowflake markup...

Still writing the snowflake motion: the outer flake falls with a transform, while the sway runs through the separate `translate` property so the two don't fight over the same transform.

Still writing the storm card: the lightning bolt will be a div shaped with a clip-path polygon and filled with a yellow gradient, flickering through keyframes with a brief glow on the card background, plus some quick rain drops.

Still writing the card markup...

Still writing the card markup...

Still writing the card hover and reduced-motion rules...

Still writing the reduced-motion fallback...

Now I'm wrapping the animations in a no-preference media query, so the default static look stays intact for reduced-motion users. The hover lift stays, just without transition under reduced motion, and the static rain drops and sun rays still show their resting positions.

Still working out the rain: the drops will start above the cloud's base and fall through the icon box, with their horizontal spots set by a custom property.

Still writing the rain drops...

Still writing the cloud styles...

Still writing the cloud styles...

Still working out the cloud geometry: the body, a small bump, and a larger bump all sit on the same base, with the bumps reaching above it.

Still writing the sun rays...

Still writing the sun rays...

Still writing the sun colors...

Still writing the sun halo and the rainy card colors...

Still writing the snowy card: the flakes will be white with a faint shadow so they stay visible against the pale blue gradient.

Still writing the snowy card gradient and the dark text colors.

Still writing the lightning bolt...

Still working out the lightning polygon: the points run from the top, zig down-left, jog right, drop to a tip, then climb back up through the middle.

Still working out the lightning shape and where it sits under the cloud...

Still working out the bolt flicker: the keyframes hold it dark most of the cycle and flash it on for a brief moment near the start.

Still writing the storm overlay and the bolt flicker timing...

Still writing the snow flakes and the stormy rain drops...

Still writing the flake's arms, so the asterisk shape is getting worked out.

Still writing the snowflake arms: I'm trying to get a third bar in so the flake reads as a proper six-point shape rather than a plain plus.

Still working out the snowflake arms: two bars at different angles give me four arms, but they wouldn't sit evenly around the center.

Still writing the snowflake arms, now working out how to get three bars at 0, 60 and 90 degrees so it reads as a proper six-point shape.

Still working out the snowflake arms: I'm trying to get three bars at evenly spaced angles, and I'm weighing whether to add an extra child element for the third one.

Still working out the snowflake arms: I'm trying to get three evenly spaced bars so it reads as a six-point shape, and I'm weighing an extra element against a pseudo-element with stacked backgrounds.

Still writing the snowflake arms: I'm going with three bars per flake, each rotated to its own angle, so it reads as a six-point shape.

Still writing the snowflake arms: three bars at 0, 60 and 120 degrees, each in its own element, so the flake reads as a six-point shape.

Still working out the snowflake spin: each arm bar gets its own rotation through the separate `rotate` property, so the spin doesn't clash with the base angle set on `transform`.

Still writing the snowflake spin: each of the three bars gets its own `i` element, and the spin runs through the `rotate` property so it doesn't clash with the base angle on `transform`.

Still working on the rain drops, giving each one its own position, duration, and delay through custom properties.

Now I'm settling the card text, picking cities for each weather type, starting with a sunny one.

Now I'm filling in the card text, with the cities and the meta lines for each weather type.

Now I'm weighing whether a light page background or a dark one will make the four cards stand out better, and I'm leaning toward light, since the stormy dark card will still read clearly against it.

Now I'm settling on a dark page background with a subtle grid, and I'm sizing the layout: a max-width container with the cards in one column on phones, two columns on tablets, and four on desktop.

Still writing the card layout: each card is a flex column with centered text, a rounded shape, and a soft shadow with a light inner edge.

Still writing the card hover and gloss overlay, and the storm flash will get its own pseudo-element.

Still writing the icon wrapper, with a soft glassy circle behind each icon so the group reads as a badge.

Still writing the card text styles: the city name, the large temperature with a smaller unit, and the description line.

Still writing the card meta and the color variables: each card gets a background, ink, and muted tone, and the sunny one uses a warm yellow-to-orange gradient.

Still writing the color variables for the rainy, snowy and stormy cards, and I'm settling each card's gradient and ink tone.

Still writing the snowy cloud's shading and the flake highlights, with a faint blue shadow so the white bars stay visible against the light gradient.

Still writing the sun keyframes: the rays spin slowly around the core, and the core pulses gently.

Still writing the sun animation: the core pulses gently and the halo breathes behind it, while the rays stay on their own layer so they can spin without moving the core.

Still working out the sun's rays: alternating long and short bars around the core, with the short ones set to sit just inside the longer ones.

Still writing the rain: the drops start below the cloud and fall away with a fade, each one set to its own position, duration, and delay.

Still writing the rain: the drops fall from under the cloud and fade out, each one with its own position and timing.

Still writing the snowflakes: each one falls and sways on its own timing, with its position set through a custom property.

Still writing the snowflake fall and sway: the flakes drift side to side while they drop, and I'm checking the keyframe timing so they end just past the bottom of the card.

Checking the snow fall distance: I'm dropping it to 54px from a top of 44px so the flakes stop above the city name, and the rain drops get the same kind of bottom-edge check.

Still writing the snow flake positions and fall distance, and I'm checking that the flakes start under the cloud and stay clear of the city text. Next I'll shift to the stormy card's rain drops, adjusting their spacing.

Still writing the cloud shape: a generic base class that sets its position and a shared background variable, with the pseudo-elements picking up the same color so the storm cloud comes out darker as one piece.

Still writing the cloud's base and its two round bumps, using the same shared color for the body and both circles so it reads as one shape.

Still working out the cloud's position: I'm moving its top down to 30px so the body sits between 30 and 56, which leaves room for the drops to start just below it.

Still writing the lightning bolt, a yellow zigzag that sits under the cloud and uses a clip path to get its jagged shape.

Still writing the lightning polygon, checking its corners so the zigzag doesn't cross over itself.

Still checking the lightning zigzag: I'm making sure its diagonal edges don't cross each other, and the first edges look clear of the later ones.

Still writing the lightning flash: I'm checking that the bolt's zigzag doesn't cross itself, and the flash keyframes will start with a dim opacity so the strike reads as a flicker.

Still writing the bolt's flash keyframes: I'm keeping the dim state visible rather than near-invisible, with a quick double flash, and I'm checking that the timing lands in a sensible spot for a screenshot.

Still writing the storm overlay: a pale yellow radial flash that stays hidden most of the time and only pulses during the lightning timing. I'm checking the stacking so the card content stays above the gloss layer.

Still writing the card's z-order: the gloss overlay sits on top of the static text, so I'm lifting the card's children above it with a relative position and a higher z-index while keeping the icons' absolute layers inside their own wrapper.

Checking the lightning polygon's edges for crossings turned out fine. The storm overlay and the bolt both sit above the gloss layer, and the card's children get lifted above all the overlays so the text stays readable.

Still writing the page header and body background: a centered h1 with a small caption, and a dark base with a soft radial glow at the top.

Still writing the page's base styles: a border-box reset, a system font stack, and a width check so nothing scrolls sideways at 375px. Reduced motion needs care too, so I'm wrapping the animations in a no-preference query and turning off the card transition when the user prefers less motion.

Still working out the rain drops' static spacing under reduced motion, since they'd all sit at the same height and look like one flat row.

Still working out the flake positions: I'm giving each one an inline vertical offset so the static view spreads them out, and I'm checking that the animated fall doesn't carry them past the bottom edge of the card.

Still working out the reduced-motion case: the drops and flakes would all sit at one height, so I'm looking at giving each a small vertical offset so the static view spreads them out.

Now I'm settling the reduced-motion case: the drops and flakes would all sit at one height in a flat row. Rather than hide them, I'll give each a small vertical offset through a custom property, and in the animated mode I'll pin them back to the cloud's bottom edge so the fall starts from the same place.

Sizing the reduced-motion version: the drops and flakes get a per-element vertical offset so they don't line up in a flat row, and the animated mode pins them back to the cloud's bottom edge. For the lightning, I'm weighing whether the bolt should sit at a fixed partial opacity when motion is reduced, so it reads as a static bolt rather than a flicker.

Still writing the HTML skeleton: a document head, the page header, and the grid section where the four cards will sit.

Still writing the card markup: the first sunny card gets an icon wrapper with a sun and its rays, then the city name, temperature, description, and a short list of humidity and wind.

Still working out the sun's rays: they'll spin around a shared container, with each ray placed by its own rotation angle, while the core sits on top as a separate element.

Still writing the rain card's drops: I'm placing each one with a custom horizontal position and a delay variable so the falls don't start in sync.

Still writing the card styles: the rain card's cloud gets a shared color variable, and each card class sets its own palette variables so the icons and text read correctly on that background.

Still writing the card color variables: the stormy card gets a deep purple background with a lighter ink, and its cloud is a slate gray, with the drops taking their own shade.

Still writing the sun's core: a pale-yellow radial gradient that sits above the rays, with a soft glow around it. I'm checking that the orange gradient behind it keeps the core reading as the brightest point on the card.

Still working on the sunny card's palette: the pale rays would wash out against a light yellow background, so I'm switching to a deeper amber gradient with dark brown ink so the rays and core stand out.

Still writing the snowy card's background: I'm pushing the gradient a shade deeper so the white flakes stand out against it, with a dark blue outline helping them read.

Still writing the snowy card's details: the flakes get a thin dark-blue shadow so they stand out on the lighter background, and the cloud's underside gets a faint inset shade.

Still working on the bolt: I'm dropping the drop-shadow glow, since clip-path would cut it off, and letting the storm flash overlay carry the glow instead.

Next I'm placing the bolt's top and the rain drops so they don't overlap, moving the drops out to 26%, 38%, 66%, and 78% and keeping the bolt centered at 60px. The snow flakes come next, spread across the card at roughly 26% to 74% with one extra near 32%.

Still writing the snowflake bars: each flake gets three rotated arms, and the bars are being sized so they read as crosses at small scale.

Still writing the flake spin: I'm animating each arm's rotation with a keyframe so the snowflakes turn in place, and checking whether animating the rotate property alongside the base angle works in current browsers.

Still writing the falling snow: each flake drops with a staggered delay and sways side to side, and the keyframes for the fall are being set up now.

Still writing the flake's vertical placement: the base position will add a per-flake offset to a fixed top, and the reduced-motion block will reset the top so every flake starts from the same spot.

Still setting the rain drops and lightning bolt: five drops for the cloud at staggered positions and timings, four faster drops for the stormy card, and the bolt centered with a fixed negative margin.

Still writing the weather cards' layout details: the drops sit at a fixed left position with a small negative margin to center them, and the bolt's top and height are set so it ends above the cloud's bottom edge.

Still writing the card's meta row and the hover-gloss overlay, using CSS for the layout and the shine effect.

Still writing the card hover effects: the cards will lift up on hover, and the icon will scale up slightly with a short transition.

Still writing the page's base styles: a border-box reset, a system font stack, and a dark gradient background, with a footer line that reads as a note on pure HTML and CSS, no JavaScript.

Still writing the page's layout: a centered header and a responsive grid that goes from one column up to two and then four as the screen widens.

Still writing the card's base styles: a flex column with centered content, rounded corners, a soft shadow, and the background and ink colors coming from the card's variables.

Still writing the card's hover state: the base styles and gloss overlay are in place, and now the card lifts up on hover with a deeper shadow.

Still writing the card's styles: the base is a flex column with a soft shadow and a gloss overlay, and the hover lifts the card and deepens its shadow.

Still writing the icon's base: a fixed 120px circle with a soft radial glow and a small bottom margin, set to scale up slightly on hover.

Still writing the timing and typography: the temperature number gets a large, tightly tracked bold style, and the degree unit is a smaller superscript-style span.

Still working on the unit's placement: the degree sign is being nudged up with a smaller font size and a vertical offset, so it sits near the top of the big digits instead of dropping to the baseline.

Still writing the meta row: the description gets a small margin and a slightly smaller, softened text, and the meta list uses flex spacing with a thin top border.

Still writing the meta row's styling: the meta list gets pushed to the bottom of the card, and the description gets a bit of extra space above it so the two don't sit flush together.

Still writing the card color variables: a warm amber gradient for the sunny card, a slate-to-navy gradient for the rainy one, and a pale icy gradient for the snowy one, each with its own ink and line color.

Still writing the stormy card's colors: a deep violet-to-near-black gradient with pale lavender ink, a dim grey cloud, and a periwinkle drop color.

Still writing the sun: the rays are small rounded bars rotated around the center, and the sun itself is a radial gradient circle with a soft glow.

Still writing the sun's glow: a pale halo sits behind the disc, and the inner shading gives it a bit of depth.

Still working on the sun: I'm checking whether the halo behind the disc can sit under the core without a stacking context getting in the way, since the rays come later in the markup and could paint over it.

Still working on the sun's halo: the pseudo-element gets a negative z-index so it falls behind the sun disc and rays but stays above the card's gloss layer.

Next I'm weighing how to get the halo behind the sun. The sun's own animation adds a transform, which makes it a stacking context, so a z-index of -1 on its pseudo-element would paint above the sun's background instead of below it. I'm considering moving the halo onto a separate element or onto the icon's ::after instead.

Still working on the sun's halo: I'm moving it onto a `.icon::before` pseudo-element scoped to the sunny card, since the sun's own transform would trap a negative z-index inside its stacking context.

Still writing the sun's glow: I'm dropping the separate halo element and putting the glow into a static box-shadow on the sun disc, so the breathing animation only scales the core.

Still working on the sun's glow: I'm weighing a ring pseudo-element that scales outward as a ripple, though I need to check it won't fight the stacking context created by the sun's transform.

Still writing the sun's pulse: a ring pseudo-element on the disc that expands outward and fades, like a heat wave.

Still writing the cloud's shape: a rounded body with two bumps on top, all in the cloud color with a soft inner shadow along the bottom.

Still writing the drop: a small teardrop shape with a rounded top and a gradient fading into the drop color, positioned from a variable x offset.

Still writing the rain: a small bolt shape in pale yellow sits at the center of the icon, cut into a zigzag with a clip path, and the drops fall from a fixed starting height.

Still writing the storm flash: the keyframes alternate between dark and bright pulses so the lightning reads as a quick double-flicker.

Still writing the storm's bolt flicker: I'm giving the lightning a looping opacity keyframe so it pulses on a steady cycle, and the rain drops get a fall animation that drifts them down and fades them out before they reach the bottom edge.

Still writing the snow flakes: each one is a small absolutely positioned wrapper with its own offset, and the inner arms are rotated to give a six-point look.

Still writing the snowflake arms: each one gets a thin white bar that spans the full wrapper, and the bars are rotated at 60 and 120 degrees to form the six-point shape.

Still writing the animations: the rays spin on a slow loop, the sun breathes gently, and its ring pulse expands outward. I'm setting up the rain drops next, each falling and fading out inside the card.

Still writing the rain and snow keyframes: the drops and flakes fall with a per-element delay and duration, and the flakes also sway side to side while they spin.

Still writing the storm overlay: a radial flash sits over the whole card, starting transparent and getting its animation in the reduced-motion-safe block.

Still writing the reduced-motion fallbacks: the base styles keep the ring hidden, and the sun's breathing and ring pulse only switch on for users who haven't asked for less motion.

Still writing the reduced-motion block: the card and icon transitions get switched off there, while the hover lift stays in place.

Still writing the sunny card's markup: the rays are a set of small spans, each rotated by its own angle around the sun.

Still writing the sunny card's markup: the rays are a row of spans, each turned by its own angle, and the markup is closing out with the sun, the city name, the temperature, the description, and the humidity and wind lines.

Now I'm writing the rain card's markup: a cloud at the top of the icon, with several drops falling at different positions and timings.

Still writing the rain card's drops: each one gets its own horizontal position, delay, and fall speed so they don't all land together.

Still writing the rain card's markup: the drops get staggered horizontal offsets, delays, and fall times, and the description is being kept short.

Still writing the snowy card's markup: the flake gets a fixed horizontal offset, a delay, and a fall time, and its arms are being set up inside.

Still writing the snowy card's flakes: five of them, each with its own horizontal position, delay, fall time, and vertical offset.

Still writing the stormy card's markup: a cloud on top and a drop that falls from a set starting point, with the drops staggered by their own horizontal offset, delay, and fall time.

Still writing the stormy card's markup: the drops get staggered horizontal offsets, delays, and fall times, and a bolt sits at the end of the icon before the city, temperature, and description.

Still writing the stormy card's markup: the drops are staggered again, and I'm settling the cloud's gray so it reads against the dark purple background.

Checking the layout at 375px and 1280px: a single column on mobile and four cards side by side on desktop should fit comfortably. Next I'm verifying the heading margins and the stacking of the card pseudo-elements, then the background glow.

Still writing the CSS reset and page styles: the body fills the viewport with a readable font stack.

Still writing the page styles: the body gets a dark background with a soft glow at the top and a readable light text color.

Still writing the page's wrapper and header: the wrap is capped at 1200px and centered, with padding around it, and the header text is being centered too.

Still writing the page header and grid: the title sits at the top with a muted subtitle, and the grid goes from one column on mobile to two, then four side by side on wide screens.

Still writing the icon container: it's a 120px circle with a soft white radial glow, and on hover it scales up slightly.

Still writing the sun's core: it's absolutely positioned inside the icon, offset to sit in the middle.

Still writing the sun's core styles: it's a 56px circle with a warm radial gradient and a soft glow, and its pulse ring is set to start invisible.

Still writing the rain cloud: it's a rounded gray bar with two bumps on top, positioned at the top of the icon.

Still writing the rain cloud's shape: the body is a rounded bar with two bumps, and I'm checking that the bumps line up with the body so the outline reads as one cloud.

Still writing the CSS: the rain drops get a soft gradient from transparent at the top to blue at the bottom, and I'm defining the stormy card's drop color and the snow flakes next.

Still writing the temperature unit: it's a smaller span that gets nudged up with vertical-align so its top lines up with the digits.

Still writing the meta row: the description gets centered margins and a fixed line length, and the stats row sits at the bottom of the card with a divider line above it.

Still writing the meta row: the list gets its padding zeroed on the left so it lines up with the card, and each item is centered with a bold, slightly larger value.

Still writing the reduced-motion block: the animations are wired into the no-preference media query, covering the rays, sun, drops, and flakes.

Still writing the reduced-motion block: the rays, sun, drops, and flakes each get their animations, and the stormy card's flash and bolt are added too.

Still writing the keyframes and the reduced-motion block for the spin, sway, and flake rotation.

Still writing the keyframes: the rotate animation for the flake arms is wired up, and the sun's breathing and ring pulse are being defined next.

Still working through the sun's pulse ring and the stormy card's overlay, making sure those layers sit correctly above the gloss.

Still writing the reduced-motion block: the card and icon get their transitions turned off there.

Checking the static fallback now: the flakes sit in place, the sun shows its rays, and the stormy overlay stays at zero opacity. I'm also confirming the storm glow only appears behind the icon when animations run. The grid holds four cards on desktop and stacks on mobile, and each card keeps its own gradient, animated icon, city, temperature, and description.

Now I'm checking the remaining accessibility details: the icons get a role and label, and the card text colors hold up against their backgrounds.

Still writing the CSS base and page styles: the body fills the viewport with a readable font, and I'm finishing the reset.

Still writing the base CSS and card styles: the body gets a dark background with a soft blue glow and light text, and each card is starting its own gradient variables.

Still writing the card's base styles: each card gets a gradient background, light text, rounded corners, and a soft shadow, with a short transition for the hover lift.

Still writing the card's hover state: it lifts up 10px on hover with a deeper shadow, and the card's direct children are raised above the gloss layer.

Still writing the card's gradient colors and text shades for the sunny and rainy variants.

Still writing the snowy and stormy card color variables: the snowy card gets a pale icy gradient with dark blue text, and the stormy card gets a deep violet-to-black gradient.

Still writing the card's stormy flash: the overlay is set to fade in and out, and I'm checking that its peak opacity stays strong without washing out the icon.

Still writing the final stretch of CSS: the flash and bolt effects are checked as static fallbacks, and the stormy overlay stays hidden when motion is reduced.

Still writing the page markup: a centered wrapper holds a header with the title and subtitle, and a grid section that will contain the four cards.

Still writing the snow flakes: each one is a 16px box with two thin bars crossing at the center, and I'm placing them with a horizontal offset so they're spread across the card.

Still checking the spacing: the first card lifts up into the header area on hover, which is fine. I'm also making sure the overflow setting doesn't clip the sun's ring, since it sits inside the icon, and that the sunny card's glow reads as a soft halo.

Still writing the rain animation: the drops fall with staggered delays and durations, and I'm checking that the delay math stays valid when no custom delay is set.

Still writing the final CSS: the drop and snow keyframes get their durations and staggered delays, with a fallback when no custom delay is set.

Still writing the ray sizes: the odd rays run longer while the even ones are shorter and thinner, which keeps the sun's outline from looking too uniform.