GPT-6 Luna
by OpenAIReasoningClean
Running live in a sandboxed frame. Click inside it before using the keyboard.
How it went
- Total time
- 4 min 35 s
- Cost
- $0.016
- Output tokens
- 31,417
- Spent thinking
- 23,423 tokens
- Speed
- 115.7 tok/s
- Console errors
- 0
- First token after
- 3.2 s
- First visible text after
- 3 min 44 s
- Prompt tokens
- 498
- Code size
- 25.4 KB
- Finish reason
- stop
- Served by
- OpenAI
- Model id
openai/gpt-6-luna- Reasoning sent
{"effort":"max"}- Max output
- 64,000 tokens
- Generated
- Nov 10, 2026
What it was asked
The prompt
Create a set of four animated weather cards (sunny, rainy, snowy, stormy), made with HTML and CSS only. Requirements: - Absolutely no JavaScript: the file must not contain any <script> tag or inline event handler. - No images, no SVG, no icon fonts: every weather icon is built from HTML elements and pseudo-elements styled with CSS. - Each card shows an animated icon (rotating sun rays, falling rain drops, drifting snowflakes, flashing lightning), a city name, a temperature and a short description. - Each card has its own background gradient matching the weather. - The cards are displayed in a responsive grid (4 per row on desktop, stacked on mobile) and lift up on hover. - Smooth infinite animations using @keyframes, and respect prefers-reduced-motion.
System prompt, sent with every prompt
You are generating a self-contained web demo. It will be rendered automatically in a sandboxed iframe and compared side by side with the output of other AI models given the exact same task. Output rules: - Reply with exactly ONE fenced code block containing the complete file: ```html (or ```svg when the task asks for an SVG). No text before or after the code block. - Everything must be inline: CSS in <style>, JavaScript in <script>. No external files, images, fonts or network requests, except the CDN URLs explicitly allowed by the task. - Do not use localStorage, sessionStorage, cookies, IndexedDB, alert(), confirm(), prompt() or window.open(): they are blocked in the sandbox and will throw. - The page must look right in a 1280×800 viewport and adapt gracefully down to 375px wide. No horizontal scrollbar. - Something meaningful must be visible on first paint: a screenshot is taken automatically about 3 seconds after load, without any interaction. - Everything that makes the demo interesting must be visible within the first seconds: nothing hidden behind a high score, a later level or a long play session. - Games must start in a self-playing demo mode (a simple AI plays) behind a "Click or press a key to start" message, so the game can be judged in action without playing. - The iframe only receives keyboard events after the user clicks it: if the demo uses the keyboard, display a clear "Click or press a key to start" message. - The code must run with zero errors in the console of the latest Chrome.
Code run-1.html · 1033 lines
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Weather, in Four Moods</title>
<style>
:root {
color-scheme: light;
--ink: #202d42;
--muted: #758197;
--line: #e3e9ef;
--paper: #f5f7fa;
}
* {
box-sizing: border-box;
}
body {
min-width: 320px;
min-height: 100vh;
margin: 0;
color: var(--ink);
background:
radial-gradient(ellipse at 95% 0%, rgba(222, 233, 244, .7), transparent 34%),
radial-gradient(ellipse at 3% 38%, rgba(233, 239, 246, .65), transparent 30%),
var(--paper);
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
-webkit-font-smoothing: antialiased;
}
.page-shell {
width: calc(100% - 80px);
max-width: 1160px;
margin: 0 auto;
padding: 34px 0 24px;
}
.topbar {
display: flex;
align-items: center;
justify-content: space-between;
gap: 16px;
padding-bottom: 16px;
border-bottom: 1px solid rgba(36, 54, 78, .1);
}
.brand {
display: flex;
align-items: center;
gap: 10px;
}
.brand-mark {
position: relative;
display: block;
width: 29px;
height: 29px;
overflow: hidden;
border-radius: 9px;
background: #273950;
box-shadow: 0 3px 8px rgba(30, 47, 68, .14);
}
.brand-mark::before {
position: absolute;
top: 6px;
left: 7px;
width: 10px;
height: 10px;
border-radius: 50%;
background: #ffd16b;
content: "";
}
.brand-mark::after {
position: absolute;
right: 5px;
bottom: 6px;
width: 14px;
height: 5px;
border-radius: 5px;
background: #b8e7ef;
content: "";
}
.brand-name {
color: #273950;
font-size: 12px;
font-weight: 750;
letter-spacing: 2px;
}
.brand-light {
color: #8994a4;
font-weight: 550;
}
.topbar-note {
display: flex;
align-items: center;
gap: 9px;
color: #78859a;
font-size: 9px;
font-weight: 700;
letter-spacing: 1.15px;
}
.topbar-live {
width: 7px;
height: 7px;
flex: 0 0 auto;
border-radius: 50%;
background: #79b7a5;
box-shadow: 0 0 0 4px rgba(121, 183, 165, .13);
}
.note-divider {
width: 1px;
height: 12px;
margin: 0 2px;
background: #d3dce5;
}
.overview {
display: flex;
align-items: flex-end;
justify-content: space-between;
gap: 28px;
margin: 31px 0 27px;
}
.overview-copy {
min-width: 0;
}
.eyebrow {
display: flex;
align-items: center;
gap: 9px;
color: #7a879b;
font-size: 9px;
font-weight: 750;
letter-spacing: 1.55px;
}
.eyebrow-mark {
width: 18px;
height: 2px;
border-radius: 2px;
background: #e09a62;
}
.eyebrow-separator {
color: #bac3ce;
}
h1 {
margin: 11px 0 7px;
color: #1e2b40;
font-size: clamp(36px, 3.5vw, 45px);
font-weight: 680;
letter-spacing: -2.1px;
line-height: 1.08;
}
h1 em {
color: #d98759;
font-family: Georgia, "Times New Roman", serif;
font-weight: 500;
letter-spacing: -1.8px;
}
.overview-copy > p {
margin: 0;
color: #778398;
font-size: 14px;
line-height: 1.55;
}
.overview-meta {
display: flex;
align-items: center;
gap: 13px;
flex: 0 0 auto;
min-width: 226px;
padding: 12px 15px;
border: 1px solid rgba(221, 228, 236, .9);
border-radius: 15px;
background: rgba(255, 255, 255, .75);
box-shadow: 0 7px 22px rgba(48, 67, 91, .045);
}
.summary-number {
color: #d98253;
font-size: 36px;
font-weight: 580;
letter-spacing: -2px;
line-height: 1;
font-variant-numeric: tabular-nums;
}
.summary-copy {
display: flex;
flex-direction: column;
gap: 4px;
}
.summary-copy small {
color: #8591a2;
font-size: 8px;
font-weight: 750;
letter-spacing: 1.2px;
}
.summary-copy strong {
color: #344258;
font-size: 12px;
font-weight: 650;
}
.summary-dots {
display: flex;
gap: 4px;
margin-left: auto;
}
.summary-dots i {
width: 5px;
height: 17px;
border-radius: 5px;
background: #e5a055;
}
.summary-dots i:nth-child(2) {
background: #74adc3;
}
.summary-dots i:nth-child(3) {
background: #9bc9d3;
}
.summary-dots i:nth-child(4) {
background: #686c91;
}
.weather-grid {
display: grid;
grid-template-columns: repeat(4, minmax(0, 1fr));
gap: 18px;
}
.weather-card {
position: relative;
isolation: isolate;
display: flex;
min-width: 0;
min-height: 430px;
flex-direction: column;
overflow: hidden;
padding: 23px 22px 20px;
border: 1px solid rgba(255, 255, 255, .22);
border-radius: 22px;
color: #fff;
box-shadow:
0 17px 34px -22px rgba(29, 44, 69, .48),
inset 0 1px 0 rgba(255, 255, 255, .12);
transition: transform 360ms cubic-bezier(.2, .75, .25, 1), box-shadow 360ms ease;
}
.weather-card::before {
position: absolute;
z-index: 0;
top: -112px;
right: -82px;
width: 226px;
height: 226px;
border-radius: 50%;
background: radial-gradient(circle, rgba(255, 255, 255, .2), rgba(255, 255, 255, 0) 69%);
content: "";
pointer-events: none;
}
.weather-card > * {
position: relative;
z-index: 1;
}
.weather-card:hover {
transform: translateY(-8px);
box-shadow:
0 24px 40px -20px rgba(29, 44, 69, .48),
inset 0 1px 0 rgba(255, 255, 255, .15);
}
.card-sun {
--tag-dot: #ffe5a0;
background: linear-gradient(150deg, #ce7b3f 0%, #cd6b60 55%, #bb586c 100%);
}
.card-rain {
--tag-dot: #a9edff;
background: linear-gradient(150deg, #4186a3 0%, #376c94 48%, #354f83 100%);
}
.card-snow {
--tag-dot: #e5fbff;
background: linear-gradient(150deg, #508b9d 0%, #477b96 48%, #3d678b 100%);
}
.card-storm {
--tag-dot: #ffe28a;
background: linear-gradient(150deg, #555e87 0%, #3e456d 52%, #272e50 100%);
}
.card-top {
display: flex;
align-items: flex-start;
justify-content: space-between;
gap: 8px;
}
.place {
min-width: 0;
}
.place-region {
display: block;
margin-bottom: 5px;
color: rgba(255, 255, 255, .69);
font-size: 8px;
font-weight: 700;
letter-spacing: 1.25px;
line-height: 1.2;
white-space: nowrap;
}
.place h2 {
margin: 0;
color: #fff;
font-size: 20px;
font-weight: 650;
letter-spacing: -.45px;
line-height: 1.1;
}
.condition-pill {
display: inline-flex;
align-items: center;
gap: 6px;
flex: 0 0 auto;
margin-top: 2px;
padding: 6px 8px;
border: 1px solid rgba(255, 255, 255, .22);
border-radius: 20px;
background: rgba(255, 255, 255, .1);
color: rgba(255, 255, 255, .95);
font-size: 8px;
font-weight: 750;
letter-spacing: .9px;
line-height: 1;
}
.condition-dot {
width: 5px;
height: 5px;
border-radius: 50%;
background: var(--tag-dot);
box-shadow: 0 0 8px var(--tag-dot);
}
.weather-scene {
position: relative;
flex: 1 1 auto;
min-height: 172px;
margin: 5px 0 8px;
}
/* Sunny: a warm center and eight individually built, rotating rays. */
.sun-scene {
display: grid;
place-items: center;
}
.sun-halo {
position: absolute;
width: 155px;
height: 155px;
border-radius: 50%;
background: radial-gradient(circle, rgba(255, 229, 154, .23) 0, rgba(255, 226, 142, .09) 38%, transparent 72%);
}
.sun-rays {
position: absolute;
width: 122px;
height: 122px;
animation: rotate-rays 20s linear infinite;
}
.sun-ray {
position: absolute;
top: 0;
left: calc(50% - 3px);
width: 6px;
height: 18px;
transform-origin: 3px 61px;
border-radius: 5px;
background: #ffe69a;
box-shadow: 0 0 10px rgba(255, 235, 164, .42);
}
.sun-ray:nth-child(1) { transform: rotate(0deg); }
.sun-ray:nth-child(2) { transform: rotate(45deg); }
.sun-ray:nth-child(3) { transform: rotate(90deg); }
.sun-ray:nth-child(4) { transform: rotate(135deg); }
.sun-ray:nth-child(5) { transform: rotate(180deg); }
.sun-ray:nth-child(6) { transform: rotate(225deg); }
.sun-ray:nth-child(7) { transform: rotate(270deg); }
.sun-ray:nth-child(8) { transform: rotate(315deg); }
.sun-disc {
position: absolute;
width: 77px;
height: 77px;
border: 1px solid rgba(255, 255, 255, .34);
border-radius: 50%;
background: radial-gradient(circle at 32% 27%, #fff3b6 0, #ffd96c 43%, #f8b33f 100%);
box-shadow:
0 0 0 7px rgba(255, 221, 133, .13),
0 9px 25px rgba(142, 66, 35, .22);
animation: sun-breathe 3.4s ease-in-out infinite;
}
/* Rain and snow share a cloud made from one HTML element and two pseudo-elements. */
.weather-cloud {
position: absolute;
z-index: 3;
top: 24%;
left: 50%;
width: 103px;
height: 33px;
transform: translateX(-50%);
border-radius: 30px;
background: var(--cloud-fill);
filter: drop-shadow(0 7px 8px rgba(16, 41, 68, .2));
}
.weather-cloud::before,
.weather-cloud::after {
position: absolute;
border-radius: 50%;
background: var(--cloud-fill);
content: "";
}
.weather-cloud::before {
top: -17px;
left: 17px;
width: 46px;
height: 46px;
}
.weather-cloud::after {
top: -29px;
left: 44px;
width: 60px;
height: 60px;
}
.rain-scene .weather-cloud {
--cloud-fill: linear-gradient(145deg, #fbfeff 0%, #c9edf7 100%);
}
.rain-drop {
position: absolute;
z-index: 2;
top: 49%;
left: calc(50% + var(--offset));
width: 4px;
height: 16px;
transform: rotate(17deg);
border-radius: 5px;
background: linear-gradient(180deg, rgba(205, 246, 255, .3), #a8eaff 80%);
opacity: 0;
animation: rain-fall 1.08s linear infinite;
}
.drop-one { --offset: -42px; animation-delay: -.74s; }
.drop-two { --offset: -21px; animation-delay: -.18s; }
.drop-three { --offset: 0px; animation-delay: -.53s; }
.drop-four { --offset: 21px; animation-delay: -.89s; }
.drop-five { --offset: 42px; animation-delay: -.35s; }
.snow-scene .weather-cloud {
--cloud-fill: linear-gradient(145deg, #f8fdff 0%, #ccecf3 100%);
filter: drop-shadow(0 7px 8px rgba(23, 54, 77, .19));
}
.snowflake {
position: absolute;
z-index: 2;
top: var(--flake-top);
left: calc(50% + var(--offset));
width: 18px;
height: 18px;
color: #f3fcff;
opacity: 0;
animation: snow-drift 3.15s ease-in-out infinite;
}
.snowflake::before,
.snowflake::after,
.snowflake i,
.snowflake i::before {
position: absolute;
display: block;
border-radius: 2px;
background: currentColor;
content: "";
}
.snowflake::before {
top: 8px;
left: 0;
width: 18px;
height: 2px;
}
.snowflake::after {
top: 0;
left: 8px;
width: 2px;
height: 18px;
}
.snowflake i {
top: 8px;
left: 0;
width: 18px;
height: 2px;
transform: rotate(45deg);
}
.snowflake i::before {
inset: 0;
transform: rotate(90deg);
}
.flake-one { --offset: -44px; --flake-top: 49%; animation-delay: -1.25s; }
.flake-two { --offset: -22px; --flake-top: 57%; animation-delay: -2.1s; }
.flake-three { --offset: 0px; --flake-top: 48%; animation-delay: -.55s; }
.flake-four { --offset: 22px; --flake-top: 55%; animation-delay: -2.6s; }
.flake-five { --offset: 44px; --flake-top: 49%; animation-delay: -1.8s; }
.storm-scene .weather-cloud {
--cloud-fill: linear-gradient(145deg, #707996 0%, #414967 100%);
filter: drop-shadow(0 8px 9px rgba(14, 19, 43, .35));
}
.bolt-glow {
position: absolute;
z-index: 1;
top: 46%;
left: 50%;
width: 65px;
height: 66px;
transform: translateX(-50%);
border-radius: 50%;
background: radial-gradient(circle, rgba(255, 222, 100, .57), rgba(255, 200, 81, 0) 69%);
opacity: .55;
animation: glow-flash 2.7s ease-in-out infinite;
}
.lightning-bolt {
position: absolute;
z-index: 4;
top: 42%;
left: calc(50% - 18px);
width: 37px;
height: 66px;
clip-path: polygon(58% 0, 9% 54%, 42% 54%, 25% 100%, 93% 36%, 60% 36%);
background: linear-gradient(155deg, #fff5a9 0%, #ffd75c 55%, #ffb82f 100%);
filter: drop-shadow(0 0 10px rgba(255, 221, 93, .58));
animation: lightning-flash 2.7s ease-in-out infinite;
}
.card-bottom {
flex: 0 0 auto;
}
.temperature {
display: flex;
align-items: flex-start;
min-height: 53px;
margin: 0;
color: #fff;
font-variant-numeric: tabular-nums;
}
.temperature-value {
font-size: 56px;
font-weight: 580;
letter-spacing: -3.6px;
line-height: .88;
}
.temperature-unit {
display: flex;
align-items: flex-start;
margin: 3px 0 0 4px;
font-size: 23px;
font-weight: 450;
letter-spacing: -1px;
line-height: 1;
}
.temperature-unit small {
margin: 4px 0 0 1px;
font-size: 11px;
font-weight: 650;
letter-spacing: 0;
}
.description {
min-height: 18px;
margin: 8px 0 0;
color: rgba(255, 255, 255, .86);
font-size: 12px;
font-weight: 450;
line-height: 1.45;
}
.card-data {
display: flex;
align-items: center;
justify-content: space-between;
gap: 10px;
margin-top: 15px;
padding-top: 12px;
border-top: 1px solid rgba(255, 255, 255, .2);
}
.range-label {
color: rgba(255, 255, 255, .62);
font-size: 8px;
font-weight: 750;
letter-spacing: 1.2px;
}
.range-value {
display: flex;
align-items: center;
gap: 7px;
color: rgba(255, 255, 255, .94);
font-size: 10px;
font-variant-numeric: tabular-nums;
}
.range-value strong {
font-weight: 650;
}
.range-separator {
color: rgba(255, 255, 255, .5);
}
.page-footer {
display: flex;
align-items: center;
justify-content: space-between;
gap: 14px;
margin-top: 20px;
padding-top: 14px;
border-top: 1px solid rgba(36, 54, 78, .09);
color: #8994a4;
font-size: 8px;
font-weight: 700;
letter-spacing: 1.2px;
}
.footer-note {
display: flex;
align-items: center;
gap: 8px;
}
.footer-dot {
width: 5px;
height: 5px;
border-radius: 50%;
background: #d79061;
}
@keyframes rotate-rays {
to { transform: rotate(360deg); }
}
@keyframes sun-breathe {
0%, 100% { transform: scale(1); }
50% { transform: scale(1.055); }
}
@keyframes rain-fall {
0% {
transform: translateY(-4px) rotate(17deg);
opacity: 0;
}
17% { opacity: .95; }
82% { opacity: .9; }
100% {
transform: translateY(42px) rotate(17deg);
opacity: 0;
}
}
@keyframes snow-drift {
0% {
transform: translate3d(0, -10px, 0) rotate(0deg);
opacity: 0;
}
16% { opacity: .95; }
78% { opacity: .95; }
100% {
transform: translate3d(var(--drift, 9px), 38px, 0) rotate(130deg);
opacity: 0;
}
}
@keyframes lightning-flash {
0%, 100% {
opacity: .92;
filter: drop-shadow(0 0 10px rgba(255, 221, 93, .58));
}
5% {
opacity: .3;
filter: drop-shadow(0 0 2px rgba(255, 221, 93, .18));
}
8% {
opacity: 1;
filter: drop-shadow(0 0 13px rgba(255, 221, 93, .72));
}
12% {
opacity: .52;
filter: drop-shadow(0 0 3px rgba(255, 221, 93, .22));
}
16% {
opacity: 1;
filter: drop-shadow(0 0 13px rgba(255, 221, 93, .72));
}
59% {
opacity: .95;
filter: drop-shadow(0 0 10px rgba(255, 221, 93, .58));
}
62% {
opacity: .36;
filter: drop-shadow(0 0 2px rgba(255, 221, 93, .18));
}
66% {
opacity: 1;
filter: drop-shadow(0 0 13px rgba(255, 221, 93, .72));
}
}
@keyframes glow-flash {
0%, 100% { opacity: .48; transform: translateX(-50%) scale(.9); }
7%, 15% { opacity: .95; transform: translateX(-50%) scale(1.12); }
60% { opacity: .5; transform: translateX(-50%) scale(.94); }
66% { opacity: .95; transform: translateX(-50%) scale(1.1); }
}
@media (max-width: 900px) {
.weather-grid {
grid-template-columns: repeat(2, minmax(0, 1fr));
}
}
@media (max-width: 620px) {
.page-shell {
width: calc(100% - 36px);
padding-top: 22px;
}
.topbar {
padding-bottom: 13px;
}
.topbar-note {
gap: 8px;
font-size: 8px;
}
.topbar-note .note-divider,
.topbar-note .note-tail {
display: none;
}
.overview {
display: block;
margin: 25px 0 22px;
}
h1 {
margin-top: 10px;
font-size: 36px;
letter-spacing: -1.7px;
}
h1 em {
letter-spacing: -1.4px;
}
.overview-copy > p {
font-size: 13px;
}
.overview-meta {
width: fit-content;
min-width: 220px;
margin-top: 17px;
}
.weather-grid {
grid-template-columns: minmax(0, 1fr);
gap: 15px;
}
.weather-card {
min-height: 410px;
padding: 21px 22px 20px;
}
.page-footer {
align-items: flex-start;
font-size: 7px;
letter-spacing: .9px;
}
}
@media (prefers-reduced-motion: reduce) {
*,
*::before,
*::after {
animation: none !important;
scroll-behavior: auto !important;
transition: none !important;
}
.rain-drop {
transform: rotate(17deg);
opacity: .9;
}
.snowflake {
transform: none;
opacity: .9;
}
.lightning-bolt {
opacity: 1;
filter: drop-shadow(0 0 10px rgba(255, 221, 93, .58));
}
.bolt-glow {
transform: translateX(-50%);
opacity: .65;
}
.weather-card:hover {
transform: none;
}
}
</style>
</head>
<body>
<main class="page-shell">
<header class="topbar">
<div class="brand" aria-label="Skynote">
<span class="brand-mark" aria-hidden="true"></span>
<span class="brand-name">SKY<span class="brand-light">NOTE</span></span>
</div>
<div class="topbar-note">
<span class="topbar-live" aria-hidden="true"></span>
<span>LOCAL WEATHER</span>
<span class="note-divider" aria-hidden="true"></span>
<span class="note-tail">FOUR CITIES</span>
</div>
</header>
<section class="overview" aria-labelledby="page-title">
<div class="overview-copy">
<div class="eyebrow">
<span class="eyebrow-mark" aria-hidden="true"></span>
<span>THE DAILY BRIEF</span>
<span class="eyebrow-separator" aria-hidden="true">/</span>
<span>FOUR CITIES</span>
</div>
<h1 id="page-title">Weather, in four <em>moods.</em></h1>
<p>A small snapshot of the sky across four corners of the map.</p>
</div>
<aside class="overview-meta" aria-label="Four local city forecasts">
<span class="summary-number">04</span>
<span class="summary-copy">
<small>LOCAL SKIES</small>
<strong>City forecasts</strong>
</span>
<span class="summary-dots" aria-hidden="true">
<i></i><i></i><i></i><i></i>
</span>
</aside>
</section>
<section class="weather-grid" aria-label="Weather forecasts">
<article class="weather-card card-sun">
<header class="card-top">
<div class="place">
<span class="place-region">PORTUGAL · ATLANTIC</span>
<h2>Lisbon</h2>
</div>
<span class="condition-pill"><i class="condition-dot"></i>SUNNY</span>
</header>
<div class="weather-scene sun-scene" aria-hidden="true">
<span class="sun-halo"></span>
<div class="sun-rays">
<span class="sun-ray"></span><span class="sun-ray"></span>
<span class="sun-ray"></span><span class="sun-ray"></span>
<span class="sun-ray"></span><span class="sun-ray"></span>
<span class="sun-ray"></span><span class="sun-ray"></span>
</div>
<span class="sun-disc"></span>
</div>
<div class="card-bottom">
<p class="temperature"><span class="temperature-value">27</span><span class="temperature-unit">°<small>C</small></span></p>
<p class="description">Clear skies through golden hour</p>
<div class="card-data">
<span class="range-label">HIGH / LOW</span>
<span class="range-value"><strong>29°</strong><span class="range-separator">/</span><strong>20°</strong></span>
</div>
</div>
</article>
<article class="weather-card card-rain">
<header class="card-top">
<div class="place">
<span class="place-region">WASHINGTON · USA</span>
<h2>Seattle</h2>
</div>
<span class="condition-pill"><i class="condition-dot"></i>RAINY</span>
</header>
<div class="weather-scene rain-scene" aria-hidden="true">
<div class="weather-cloud"></div>
<span class="rain-drop drop-one"></span>
<span class="rain-drop drop-two"></span>
<span class="rain-drop drop-three"></span>
<span class="rain-drop drop-four"></span>
<span class="rain-drop drop-five"></span>
</div>
<div class="card-bottom">
<p class="temperature"><span class="temperature-value">16</span><span class="temperature-unit">°<small>C</small></span></p>
<p class="description">Light showers passing through</p>
<div class="card-data">
<span class="range-label">HIGH / LOW</span>
<span class="range-value"><strong>18°</strong><span class="range-separator">/</span><strong>12°</strong></span>
</div>
</div>
</article>
<article class="weather-card card-snow">
<header class="card-top">
<div class="place">
<span class="place-region">NORWAY · SCANDINAVIA</span>
<h2>Oslo</h2>
</div>
<span class="condition-pill"><i class="condition-dot"></i>SNOWY</span>
</header>
<div class="weather-scene snow-scene" aria-hidden="true">
<div class="weather-cloud"></div>
<span class="snowflake flake-one"><i></i></span>
<span class="snowflake flake-two"><i></i></span>
<span class="snowflake flake-three"><i></i></span>
<span class="snowflake flake-four"><i></i></span>
<span class="snowflake flake-five"><i></i></span>
</div>
<div class="card-bottom">
<p class="temperature"><span class="temperature-value">−3</span><span class="temperature-unit">°<small>C</small></span></p>
<p class="description">Soft flurries, crisp and calm</p>
<div class="card-data">
<span class="range-label">HIGH / LOW</span>
<span class="range-value"><strong>0°</strong><span class="range-separator">/</span><strong>−7°</strong></span>
</div>
</div>
</article>
<article class="weather-card card-storm">
<header class="card-top">
<div class="place">
<span class="place-region">COLORADO · USA</span>
<h2>Denver</h2>
</div>
<span class="condition-pill"><i class="condition-dot"></i>STORMY</span>
</header>
<div class="weather-scene storm-scene" aria-hidden="true">
<div class="weather-cloud"></div>
<span class="bolt-glow"></span>
<span class="lightning-bolt"></span>
</div>
<div class="card-bottom">
<p class="temperature"><span class="temperature-value">21</span><span class="temperature-unit">°<small>C</small></span></p>
<p class="description">Thunderstorms building late</p>
<div class="card-data">
<span class="range-label">HIGH / LOW</span>
<span class="range-value"><strong>24°</strong><span class="range-separator">/</span><strong>15°</strong></span>
</div>
</div>
</article>
</section>
<footer class="page-footer">
<span>THE SKY DOESN'T HOLD STILL.</span>
<span class="footer-note"><i class="footer-dot" aria-hidden="true"></i>A SMALL WEATHER BRIEF</span>
</footer>
</main>
</body>
</html>Reasoning trace (23,423 tokens)
**Creating weather card HTML** I'm tasked with creating a polished HTML/CSS code block for responsive weather cards, focusing solely on design without any JavaScript. The goal is to make four cards for different weather conditions—sunny, rainy, snowy, and stormy—ensuring they're responsive, attractive, and have animated icons. Each card will include details like temperature and descriptions, all styled with premium aesthetics. Accessibility is key, so I'll avoid inline event handlers and SVGs. Let’s ensure the final look is polished and visually appealing!**Designing weather page** I’m thinking about creating a dark-themed weather page with a "FORECAST / WEATHER AT A GLANCE" header and four glassy visual gradient cards. I want the animations for these cards to be visible for about three seconds. The icons should be distinct and clear, involving structured HTML for each weather condition, like the sun. I’m considering using CSS for the sun's rays with a repeating conic gradient to create a rotating effect. This will involve pseudo-elements for the rays. I need to ensure everything looks polished and works well together!**Creating sun rays with CSS** I'm considering using a repeating conic gradient to create sun rays, starting from the center with colored wedges. I can use a radial gradient mask to achieve this effect, which should work well in Chrome. I might simplify the design by using eight bars within a `.sun-rays` div. While I could rotate a repeating linear gradient, I think the radial mask approach will give me a cleaner and more visually appealing result. It’s all about finding the right balance!**Designing lightning effects** I’m thinking about creating a lightning bolt shape using CSS and HTML, specifically with the class `.bolt`. I need to utilize `clip-path` with polygons instead of SVG since that’s a requirement. It could also be interesting to add a cloud to the design. For the animation, I’m considering using opacity or filter effects alongside a glow to create a flash of lightning. Let’s see how this will come together!**Designing a weather dashboard** I'm thinking about creating a refined weather dashboard. I might use a pale background with specific text colors for clarity. For the layout, the main section would have a calculated width and centered margin. I want to include a top eyebrow that indicates it's a live snapshot and display a heading about the weather at a glance. There could be subheadings, date indicators, and four city forecast cards designed with a visually appealing look. I wonder if I should limit the use of web fonts for a consistent system UI.**Designing a weather interface** I'm thinking about a layout for the weather check-in, focusing on strong design without overwhelming users. Each card should display info like city name, temperature, and a brief description of the weather conditions. I want to use cities like Lisbon, Seattle, Oslo, and Denver. For example, "Sunny Lisbon 27°C" or "Snowy Oslo -3°C." The card design should have rounded corners, a bubble decoration, and some nice shadows. I’m aiming for a clean and engaging user experience!**Refining weather card layout** I’m considering the design for a small city weather card. It might have an H2 heading for the city name and a small status indicator. I want the weather icon centrally placed, with a top section for the city and country details, like "Portugal / PT · 38.72°N." It’s important to make the temperature prominent and to calculate appropriate dimensions for the cards. I think a grid layout with four cards will work well, ensuring the total height stays within a manageable range. It’s about getting the spacing just right!**Considering animation effects** I'm working on some card designs, noting that at a width of 900, it feels too narrow to fit four cards, so I should aim for two across. I'll implement animations—for the sun, it's a rotation effect over 14 seconds, and for rain, I want a drop animation with staggered delays. Snowflakes need custom positions and should animate using a drift effect, ensuring they start off a bit off-screen and make their way down smoothly.**Designing a sun and cloud** I'm thinking about creating a sun graphic with specific dimensions and a radial gradient background. I want to add a subtle ring and a box-shadow for depth. The animation for the sun's rays will rotate endlessly, while the sun itself will have a breathing effect. For the rain cloud, I’ll mark up raindrops in specific positions. It’s all about balancing aesthetics and functionality in this scene!**Designing Weather Card Layout** I'm considering adding a weather range indicator at the bottom of my weather cards, something like `H 29° / L 19°`, to create a dashboard feel. It’s an interesting detail that enhances visual hierarchy. I think I'll include two facts per card: the city's temperature and a brief description. Using a `.bottom-meta` section for the condition on the left and the temperature on the right seems good, but I might keep it simple. I’m working through the CSS for layout and spacing now.**Evaluating animation settings** I need to ensure there are no scripts affecting animations. The goal is to respect users' preferences for reduced motion. When animations are applied, they could disappear if not handled properly. I’m considering setting animation durations to .01ms and limiting iteration counts. However, I need to make sure that opacity keyframes don’t interfere. Maybe I should explicitly disable animations and set specific opacity levels for weather elements to keep everything visible.**Evaluating weather card layout** I’m considering adding an extra content row to the bottom of the weather card interface, including high/low temperatures. The typical layout follows a fixed height, so I'll use existing space for the card. I’ll sum up all padding and margins to ensure the total height makes sense. By combining elements like the temperature and description, I’ll ensure everything fits nicely together. Just need a label to finalize the layout!**Optimizing mobile layout** I'm considering how to enhance the mobile layout, possibly by hiding certain elements like the right sub-phrase and adjusting styles. I might hide the summary aside under the header or make it full-width. The page title might wrap due to its size, so I'm calculating if "Weather, in four moods." fits within a specific width. For desktop, the title can be wider and kept on one line. I’m thinking of using a cursive accent in the design for a touch of flair.**Exploring CSS for weather icons** I need to create CSS gradients and shapes for weather icons. I can build cloud icons using HTML and CSS without external dependencies. I’ll use `<div class="scene..." aria-hidden="true">` for the clouds, avoiding any Unicode symbols except for the degree and hyphen. I want to ensure that lightning is made with CSS polygons. Also, I'll check how background inheritance works with pseudo-elements, setting specific backgrounds for cloud shapes with CSS variables. A consistent fill is essential here, rather than a gradient.**Adjusting card layout** I'm working on setting up the card layout. I'm setting the `margin` for the scene flex and height too, focusing on spacing and dimensions so they look good. The total card height calculations are considering padding, scene height, margin, and footer to ensure everything fits properly. The scene should expand correctly to fill the space, and I’m thinking about how to position the elements so they’ve got a clean look. Flex settings and minimum heights are part of this adjustment.**Evaluating CSS Transitions** I’m thinking about using CSS and the `transition` property, specifically for transforming elements with `transform 380ms cubic-bezier(...)`. The card I’m considering doesn’t have interactive semantics, but it includes a hover effect. Hmm, there's a lot to think about regarding how the transition will behave during that hover. I want to make sure the effect is smooth and visually appealing, while also being functional for users.**Exploring stacking context in CSS** I'm looking into how pseudo-elements like `::after` interact with stacking context. For instance, if I set `::after` with `z-index: 0` and direct children at `z-index: 1`, that could affect visibility. Using `position: relative` in my `weather-card` creates a nice stacking context, which I need to manage. I could simplify my design with `::before` for effects and a `box-shadow` for decoration without using `::after`. My goal is to produce clear, high-quality code that works well.**Building HTML weather cards** I’m working on some HTML card examples for displaying weather data. For instance, the card structure includes sections for temperature, descriptions, and forecasts for different cities. Each city will have unique weather descriptions, like "Clear skies all afternoon" for Lisbon or "Thunderstorms building late" for Denver. I’m considering using an `aria-label` for accessibility, even though it’s hidden. I want to ensure the temperature is clearly read by screen readers too. The organization of this data is crucial for clarity and usability.**Analyzing color contrast and readability** I’m checking color contrasts for luminance and readability. The contrast ratio for the base color is roughly 2.76, which might be slightly inadequate for large text. Some other shades like #c97837 and #cc6d60 show a better contrast, around 3.5. I’m thinking about using dark ink typography on a sunny card while keeping the contrast in mind for all cards. A gradient from #d28038 to #cd6670 should work. I’ll check the white contrast for various weather conditions too.**Evaluating CSS for snowflake** I think there might be an issue with the CSS for `i::before`. Since `i` is inline by default, I need to set its display to block. The `::before` pseudo-element is absolutely positioned. The code seems to be forming a snowflake where `i::before` creates a line rotated 90 degrees relative to its parent. This results in a combined rotation of 135 degrees. The snowflake sizes appear consistent, and I’m considering adjustments to the widths for proper alignment. The z-index also looks good for layering the various components.**Designing weather cards** I’m ready to create four weather cards! Each card needs to include rain icons and rain stage CSS for Lisbon, along with temperatures and descriptions. For the cities: Lisbon in Portugal has a high of 29°C and a low of 20°C with "Clear skies through golden hour." Seattle, with a high of 18°C and a low of 12°C, could have "Light showers passing through." Oslo is colder at −3°C to 0°C and has "Soft flurries, crisp and calm." Finally, Denver enjoys a mix of thunderstorms with a high of 24°C and a low of 15°C. I'll ensure all card text uses °C.**Considering CSS animations** I'm thinking that maybe CSS animations should be infinite, especially for things like rotating sun rays, falling raindrops, drifting snowflakes, and flashing lightning. Each card could have its own gradient that matches the weather. I want a responsive grid layout too, with four cards per row on desktop and stacked on mobile. Hover effects should lift the cards up. For smooth animations using @keyframes, I wonder if I can control the abruptness of the lightning flashes while ensuring all animations feel smooth.**Designing lightning effects** I'm thinking we can create lightning that glows and bolts using keyframes for crisp flashes. I want the flashes to be sharp, while the opacity could have a smooth fade effect. This contrast could really enhance the overall animation. I wonder if I can balance the two styles effectively to keep it visually appealing while also maintaining that dramatic effect of lightning. It's all in the details, and I want to get it just right!**Configuring CSS grid layout** I'm trying to set a row with the same item height of at least 430, and I'm thinking that setting `grid-auto-rows: 1fr` will help. The CSS grid container's item height will be flexible—stretching to content—ensuring all items share a minimum height. For mobile versions, I want to stack cards with a minimum height of 405. Also, I'm noting some responsiveness issues, like the top bar being cut off. I’ll finalize adjustments for summary position and margins next.