Models 44

GPT-6.1 Terra

by OpenAIReasoningClean
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Running live in a sandboxed frame. Click inside it before using the keyboard.

How it went

Total time
11 min 1 s
Cost
$0.263
Output tokens
52,430
Spent thinking
43,550 tokens
Speed
79.9 tok/s
Console errors
0
First token after
4.4 s
First visible text after
9 min 56 s
Prompt tokens
498
Code size
26.0 KB
Finish reason
stop
Served by
OpenAI
Model id
openai/gpt-6.1-terra
Reasoning sent
{"effort":"max"}
Max output
128,000 tokens
Generated
Nov 12, 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 · 1027 lines

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Skynote — The Weather Edit</title>
<style>
  :root {
    color-scheme: dark;
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  }

  *, *::before, *::after { box-sizing: border-box; }

  body {
    margin: 0;
    min-height: 100vh;
    color: #f6f4f0;
    background:
      radial-gradient(ellipse at 50% -20%, rgba(70, 89, 127, .34), transparent 55%),
      radial-gradient(ellipse at 0% 75%, rgba(134, 94, 56, .10), transparent 32%),
      radial-gradient(ellipse at 100% 75%, rgba(95, 81, 137, .13), transparent 33%),
      #0c131f;
    -webkit-font-smoothing: antialiased;
  }

  .shell {
    width: min(1160px, calc(100% - 96px));
    margin: 0 auto;
  }

  .masthead {
    height: 86px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, .1);
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 11px;
  }

  .brand-mark {
    position: relative;
    display: block;
    flex: none;
    width: 36px;
    height: 36px;
    border: 1px solid rgba(242, 218, 173, .55);
    border-radius: 50%;
    background: rgba(255, 255, 255, .025);
  }

  .brand-mark::before {
    content: "";
    position: absolute;
    width: 13px;
    height: 13px;
    left: 10px;
    top: 9px;
    border-radius: 50%;
    background: #eacb96;
  }

  .brand-mark::after {
    content: "";
    position: absolute;
    left: 7px;
    right: 7px;
    top: 20px;
    height: 5px;
    border-top: 1px solid #eacb96;
    border-bottom: 1px solid #eacb96;
    background: #141c29;
  }

  .brand-text strong,
  .brand-text small { display: block; }

  .brand-text strong {
    font-size: 14px;
    line-height: 1;
    letter-spacing: .19em;
    font-weight: 800;
  }

  .brand-text small {
    margin-top: 5px;
    color: #99a5b6;
    font-size: 8px;
    line-height: 1;
    font-weight: 700;
    letter-spacing: .17em;
  }

  .masthead-right {
    display: flex;
    align-items: center;
    gap: 24px;
  }

  .masthead-note {
    color: #95a1b1;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .16em;
  }

  .unit-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 99px;
    color: #e0e1e1;
    font-size: 9px;
    font-weight: 700;
    letter-spacing: .1em;
    white-space: nowrap;
  }

  .unit-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #e9c58d;
    box-shadow: 0 0 10px rgba(233, 197, 141, .55);
  }

  .intro {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
    padding-top: 40px;
  }

  .intro-copy { min-width: 0; }

  .eyebrow {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #d7be98;
    font-size: 10px;
    line-height: 1.2;
    font-weight: 750;
    letter-spacing: .16em;
  }

  .eyebrow::before {
    content: "";
    width: 23px;
    height: 1px;
    background: #d7be98;
  }

  .eyebrow span { color: #8290a3; }

  h1 {
    margin: 13px 0 9px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(39px, 4.2vw, 54px);
    line-height: 1.08;
    font-weight: 400;
    letter-spacing: -.035em;
  }

  h1 em {
    color: #f0d3a6;
    font-weight: 400;
  }

  .intro-copy > p {
    margin: 0;
    color: #a9b2bf;
    font-size: 14px;
    line-height: 1.5;
  }

  .intro-meta {
    flex: 0 0 158px;
    margin-bottom: 3px;
    padding-left: 18px;
    border-left: 1px solid rgba(255, 255, 255, .15);
  }

  .meta-label {
    display: block;
    color: #8997a9;
    font-size: 9px;
    font-weight: 750;
    letter-spacing: .14em;
    white-space: nowrap;
  }

  .meta-amount {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
  }

  .meta-amount strong {
    color: #f1eee9;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 28px;
    line-height: 1;
    font-weight: 400;
  }

  .meta-amount span {
    color: #aab4c1;
    font-size: 8px;
    line-height: 1.5;
    font-weight: 700;
    letter-spacing: .12em;
  }

  .weather-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-top: 32px;
  }

  .weather-card {
    position: relative;
    isolation: isolate;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 430px;
    padding: 20px;
    overflow: hidden;
    color: var(--ink);
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 19px;
    box-shadow: 0 18px 38px rgba(0, 0, 0, .19), inset 0 1px rgba(255, 255, 255, .16);
    transition: transform .35s cubic-bezier(.2, .7, .2, 1), box-shadow .35s ease;
  }

  .weather-card::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
      radial-gradient(circle at 50% 27%, rgba(255, 255, 255, .16), transparent 42%),
      linear-gradient(180deg, rgba(255, 255, 255, .1), transparent 32%);
  }

  .weather-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 28px 48px rgba(0, 0, 0, .28), inset 0 1px rgba(255, 255, 255, .2);
  }

  .sunny {
    --ink: #57392e;
    --divider: rgba(94, 57, 41, .23);
    background: linear-gradient(155deg, #f8d99c 0%, #f5c285 56%, #edaa78 100%);
  }

  .rainy {
    --ink: #25475b;
    --divider: rgba(34, 72, 94, .22);
    --cloud: #eff8fc;
    --cloud-shade: rgba(102, 151, 181, .24);
    background: linear-gradient(155deg, #b9dbe7 0%, #95c3d7 55%, #7caac8 100%);
  }

  .snowy {
    --ink: #3d5268;
    --divider: rgba(58, 80, 102, .2);
    --cloud: #f9fcff;
    --cloud-shade: rgba(115, 153, 185, .23);
    background: linear-gradient(155deg, #e0ebf1 0%, #cbdde9 55%, #b1c9dc 100%);
  }

  .stormy {
    --ink: #f7f5ff;
    --divider: rgba(255, 255, 255, .24);
    --cloud: #c5c9dc;
    --cloud-shade: rgba(62, 72, 111, .3);
    background: linear-gradient(155deg, #898fb2 0%, #697398 54%, #474f74 100%);
  }

  .card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 0 0 25px;
  }

  .weather-tag {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 9px;
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: 99px;
    background: rgba(255, 255, 255, .17);
    font-size: 9px;
    line-height: 1;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
  }

  .tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    opacity: .75;
  }

  .card-index {
    font-size: 9px;
    font-weight: 750;
    letter-spacing: .12em;
    opacity: .66;
  }

  .weather-visual {
    position: relative;
    flex: 0 0 192px;
    height: 192px;
  }

  .weather-visual::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 50%;
    width: 180px;
    height: 180px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, .2), transparent 69%);
  }

  .halo {
    position: absolute;
    z-index: 0;
    left: 50%;
    top: 50%;
    width: 158px;
    height: 158px;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(255, 255, 255, .29);
    border-radius: 50%;
  }

  .halo::before {
    content: "";
    position: absolute;
    inset: -15px;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 50%;
  }

  .halo::after {
    content: "";
    position: absolute;
    top: 23px;
    right: 9px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .7);
  }

  .sparkle {
    position: absolute;
    z-index: 1;
    width: 2px;
    height: 13px;
    border-radius: 3px;
    background: rgba(255, 255, 255, .85);
    animation: sparkle 3.4s ease-in-out infinite;
  }

  .sparkle::after {
    content: "";
    position: absolute;
    width: 12px;
    height: 2px;
    left: -5px;
    top: 5px;
    border-radius: 3px;
    background: inherit;
  }

  .sparkle-a { left: 12%; top: 29%; }
  .sparkle-b {
    right: 12%;
    top: 65%;
    transform: scale(.7);
    animation-delay: -1.5s;
  }

  /* Sunshine */
  .sun-system {
    position: absolute;
    z-index: 3;
    left: 50%;
    top: 50%;
    width: 142px;
    height: 142px;
    transform: translate(-50%, -50%);
  }

  .sun-rays {
    position: absolute;
    inset: 0;
    animation: spin 15s linear infinite;
  }

  .sun-rays span {
    position: absolute;
    top: 0;
    left: 68px;
    width: 6px;
    height: 18px;
    border-radius: 99px;
    background: #fff0bd;
    box-shadow: 0 0 11px rgba(255, 242, 190, .45);
    transform-origin: 3px 71px;
  }

  .sun-rays span:nth-child(2) { transform: rotate(45deg); }
  .sun-rays span:nth-child(3) { transform: rotate(90deg); }
  .sun-rays span:nth-child(4) { transform: rotate(135deg); }
  .sun-rays span:nth-child(5) { transform: rotate(180deg); }
  .sun-rays span:nth-child(6) { transform: rotate(225deg); }
  .sun-rays span:nth-child(7) { transform: rotate(270deg); }
  .sun-rays span:nth-child(8) { transform: rotate(315deg); }

  .sun-core {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 82px;
    height: 82px;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    background: radial-gradient(circle at 33% 27%, #fff6c8 0%, #ffe08b 49%, #ffc25e 100%);
    box-shadow: 0 0 0 9px rgba(255, 239, 184, .15), 0 0 35px rgba(255, 226, 145, .55);
  }

  .sun-core::after {
    content: "";
    position: absolute;
    inset: 7px;
    border-top: 1px solid rgba(255, 255, 255, .55);
    border-radius: 50%;
  }

  /* Clouds are assembled from a rounded base and two circles. */
  .cloud {
    position: absolute;
    z-index: 3;
    left: 50%;
    top: 69px;
    width: 118px;
    height: 47px;
    transform: translateX(-50%);
    border-radius: 50px;
    background: var(--cloud);
    filter: drop-shadow(0 10px 10px rgba(47, 76, 101, .18));
    animation: cloud-drift 4.6s ease-in-out infinite;
  }

  .cloud::before,
  .cloud::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    background: var(--cloud);
  }

  .cloud::before {
    left: 13px;
    bottom: 16px;
    width: 61px;
    height: 61px;
  }

  .cloud::after {
    right: 10px;
    bottom: 9px;
    width: 76px;
    height: 76px;
  }

  .cloud-shade {
    position: absolute;
    z-index: 1;
    left: 0;
    right: 0;
    bottom: 0;
    height: 23px;
    border-radius: 0 0 50px 50px;
    background: linear-gradient(to top, var(--cloud-shade), transparent);
  }

  .snowy .cloud { animation-delay: -1.3s; }
  .stormy .cloud { animation-duration: 5.5s; animation-delay: -2s; }

  /* Rain */
  .precipitation {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 104px;
    width: 148px;
    height: 80px;
    overflow: hidden;
    transform: translateX(-50%);
  }

  .rain-drop {
    position: absolute;
    top: var(--y, 0px);
    width: 4px;
    height: 13px;
    border-radius: 99px;
    background: #ecfaff;
    opacity: .9;
    transform: rotate(18deg);
    animation: rainfall 1.35s linear infinite;
  }

  .rain-drop:nth-child(even) { animation-duration: 1.15s; }
  .rain-drop:nth-child(1) { left: 8%;  --y: 2px;  --rest-y: 23px; animation-delay: -.15s; }
  .rain-drop:nth-child(2) { left: 21%; --y: 10px; --rest-y: 45px; animation-delay: -.8s; }
  .rain-drop:nth-child(3) { left: 34%; --y: 5px;  --rest-y: 20px; animation-delay: -.48s; }
  .rain-drop:nth-child(4) { left: 47%; --y: 14px; --rest-y: 39px; animation-delay: -.95s; }
  .rain-drop:nth-child(5) { left: 59%; --y: 3px;  --rest-y: 22px; animation-delay: -.3s; }
  .rain-drop:nth-child(6) { left: 71%; --y: 11px; --rest-y: 48px; animation-delay: -.68s; }
  .rain-drop:nth-child(7) { left: 84%; --y: 6px;  --rest-y: 31px; animation-delay: -1.08s; }
  .rain-drop:nth-child(8) { left: 30%; --y: 16px; --rest-y: 58px; animation-delay: -.2s; }
  .rain-drop:nth-child(9) { left: 67%; --y: 15px; --rest-y: 59px; animation-delay: -.9s; }

  /* Snowflakes are three crossed CSS strokes. */
  .snowflake {
    position: absolute;
    top: var(--y, 0px);
    width: 13px;
    height: 2px;
    border-radius: 3px;
    background: #fff;
    filter: drop-shadow(0 1px 1px rgba(65, 98, 131, .35));
    animation: snowfall 3.2s linear infinite;
  }

  .snowflake::before,
  .snowflake::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: inherit;
  }

  .snowflake::before { transform: rotate(60deg); }
  .snowflake::after { transform: rotate(120deg); }
  .snowflake:nth-child(even) { width: 10px; animation-duration: 3.6s; }
  .snowflake:nth-child(1) { left: 10%; --y: 5px;  --rest-y: 22px; animation-delay: -.2s; }
  .snowflake:nth-child(2) { left: 23%; --y: 12px; --rest-y: 43px; animation-delay: -1.1s; }
  .snowflake:nth-child(3) { left: 37%; --y: 2px;  --rest-y: 25px; animation-delay: -2.1s; }
  .snowflake:nth-child(4) { left: 51%; --y: 14px; --rest-y: 51px; animation-delay: -.6s; }
  .snowflake:nth-child(5) { left: 65%; --y: 4px;  --rest-y: 29px; animation-delay: -1.7s; }
  .snowflake:nth-child(6) { left: 79%; --y: 10px; --rest-y: 44px; animation-delay: -2.7s; }
  .snowflake:nth-child(7) { left: 31%; --y: 15px; --rest-y: 61px; animation-delay: -.9s; }
  .snowflake:nth-child(8) { left: 72%; --y: 16px; --rest-y: 61px; animation-delay: -2.4s; }

  /* Lightning */
  .bolt-glow {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 103px;
    width: 45px;
    height: 76px;
    transform: translateX(-50%);
    opacity: .85;
    filter: drop-shadow(0 0 7px rgba(255, 224, 126, .5));
    animation: lightning 3.8s ease-in-out infinite;
    animation-delay: -.8s;
  }

  .bolt {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #fff9c8, #ffdf7a 60%, #ffc45e);
    clip-path: polygon(43% 0, 93% 0, 63% 39%, 88% 39%, 12% 100%, 33% 55%, 8% 55%);
  }

  .card-info { margin-top: auto; }

  .location {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0;
    font-size: 9px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: .13em;
    opacity: .7;
  }

  .pin {
    position: relative;
    flex: none;
    width: 8px;
    height: 8px;
    border: 1px solid currentColor;
    border-radius: 50% 50% 50% 0;
    transform: rotate(-45deg);
  }

  .pin::after {
    content: "";
    position: absolute;
    left: 2px;
    top: 2px;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: currentColor;
  }

  .city-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 6px;
    margin-top: 7px;
  }

  .city-row h2 {
    margin: 0 0 2px;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(17px, 1.64vw, 21px);
    line-height: 1.15;
    font-weight: 400;
    letter-spacing: -.025em;
    white-space: nowrap;
  }

  .temperature {
    margin: 0;
    font-size: clamp(42px, 3.8vw, 48px);
    line-height: .92;
    font-weight: 400;
    letter-spacing: -.07em;
    white-space: nowrap;
  }

  .degree {
    display: inline-block;
    margin-left: 1px;
    font-size: .6em;
    line-height: 1;
    vertical-align: top;
    letter-spacing: 0;
  }

  .description {
    margin: 8px 0 16px;
    font-size: 12px;
    line-height: 1.35;
    font-weight: 500;
    opacity: .82;
  }

  .stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin: 0;
    padding-top: 13px;
    border-top: 1px solid var(--divider);
  }

  .stats > div { min-width: 0; }

  .stats dt {
    font-size: 8px;
    line-height: 1.2;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    white-space: nowrap;
    opacity: .68;
  }

  .stats dd {
    margin: 6px 0 0;
    font-size: 12px;
    line-height: 1;
    font-weight: 700;
    white-space: nowrap;
  }

  .page-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-top: 27px;
    padding: 18px 0 26px;
    border-top: 1px solid rgba(255, 255, 255, .1);
    color: #8996a7;
    font-size: 9px;
    line-height: 1.5;
    font-weight: 700;
    letter-spacing: .12em;
  }

  .footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .footer-mark {
    width: 7px;
    height: 7px;
    border-radius: 1px;
    background: #d8ba88;
    transform: rotate(45deg);
  }

  .footer-accent { color: #d2bd9b; }

  @keyframes spin {
    to { transform: rotate(360deg); }
  }

  @keyframes sparkle {
    0%, 100% { opacity: .3; }
    50% { opacity: .9; }
  }

  @keyframes cloud-drift {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, -5px); }
  }

  @keyframes rainfall {
    0% { opacity: 0; transform: translate(6px, -10px) rotate(18deg); }
    15%, 75% { opacity: 1; }
    100% { opacity: 0; transform: translate(-8px, 53px) rotate(18deg); }
  }

  @keyframes snowfall {
    0% { opacity: 0; transform: translate(4px, -9px) rotate(0deg); }
    15% { opacity: 1; }
    40% { transform: translate(-4px, 14px) rotate(35deg); }
    75% { opacity: 1; transform: translate(5px, 38px) rotate(80deg); }
    100% { opacity: 0; transform: translate(-5px, 57px) rotate(110deg); }
  }

  @keyframes lightning {
    0%, 61%, 76%, 100% {
      opacity: .82;
      filter: drop-shadow(0 0 6px rgba(255, 220, 120, .42));
    }
    64%, 70% {
      opacity: 1;
      filter: drop-shadow(0 0 18px rgba(255, 234, 154, .95));
    }
    67%, 73% {
      opacity: .6;
      filter: drop-shadow(0 0 4px rgba(255, 222, 126, .35));
    }
  }

  @media (min-width: 961px) and (max-width: 1100px) {
    .weather-card { padding-left: 16px; padding-right: 16px; }
    .stats { gap: 4px; }
  }

  @media (max-width: 960px) {
    .shell { width: calc(100% - 64px); }
    .weather-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .city-row h2 { font-size: 22px; }
    .temperature { font-size: 48px; }
  }

  @media (max-width: 600px) {
    .shell { width: calc(100% - 40px); }
    .masthead { height: 72px; }
    .masthead-note { display: none; }
    .unit-pill { padding: 8px 10px; }
    .intro { padding-top: 28px; }
    .intro-meta { display: none; }
    h1 {
      margin: 10px 0 7px;
      font-size: clamp(36px, 9.8vw, 44px);
      line-height: 1.06;
    }
    .intro-copy > p { font-size: 12px; }
    .weather-grid {
      grid-template-columns: 1fr;
      gap: 10px;
      margin-top: 22px;
    }
    .weather-card {
      height: 126px;
      padding: 12px 14px 12px 124px;
      border-radius: 16px;
    }
    .card-head { flex-basis: 20px; }
    .weather-tag { padding: 5px 8px; font-size: 8px; }
    .card-index { font-size: 8px; }
    .weather-visual {
      position: absolute;
      left: -35px;
      top: 50%;
      width: 192px;
      height: 192px;
      margin-top: -96px;
      transform: scale(.59);
    }
    .card-info { margin-top: 6px; }
    .location { font-size: 8px; }
    .city-row { margin-top: 3px; }
    .city-row h2 { font-size: 18px; }
    .temperature { font-size: 36px; }
    .description {
      margin: 5px 0 0;
      overflow: hidden;
      font-size: 11px;
      line-height: 1.25;
      text-overflow: ellipsis;
      white-space: nowrap;
    }
    .stats { display: none; }
    .page-footer { flex-wrap: wrap; margin-top: 24px; }
  }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation: none !important;
      transition: none !important;
    }
    .weather-card:hover { transform: none; }
    .rain-drop, .snowflake {
      top: var(--rest-y);
      opacity: 1;
    }
    .rain-drop { transform: rotate(18deg); }
    .snowflake { transform: none; }
  }
</style>
</head>
<body>
<div class="shell">
  <header class="masthead">
    <div class="brand">
      <span class="brand-mark" aria-hidden="true"></span>
      <span class="brand-text">
        <strong>SKYNOTE</strong>
        <small>THE WEATHER EDIT</small>
      </span>
    </div>
    <div class="masthead-right">
      <span class="masthead-note">A LITTLE LOOK AT THE WORLD</span>
      <span class="unit-pill"><span class="unit-dot" aria-hidden="true"></span> °C FORECAST</span>
    </div>
  </header>

  <main>
    <section class="intro" aria-labelledby="page-title">
      <div class="intro-copy">
        <div class="eyebrow">THE FORECAST COLLECTION <span>/ VOL. 01</span></div>
        <h1 id="page-title">A little window to the <em>weather.</em></h1>
        <p>Four cities. Four forecasts. A little reason to look up.</p>
      </div>
      <div class="intro-meta" aria-hidden="true">
        <span class="meta-label">THE WORLD OUTSIDE</span>
        <div class="meta-amount"><strong>04</strong><span>PLACES<br>FOUR SKIES</span></div>
      </div>
    </section>

    <section class="weather-grid" aria-label="Weather in four cities">
      <article class="weather-card sunny">
        <div class="card-head">
          <span class="weather-tag"><span class="tag-dot" aria-hidden="true"></span>Sunny</span>
          <span class="card-index">01 / 04</span>
        </div>
        <div class="weather-visual" aria-hidden="true">
          <span class="halo"></span>
          <span class="sparkle sparkle-a"></span>
          <span class="sparkle sparkle-b"></span>
          <div class="sun-system">
            <div class="sun-rays">
              <span></span><span></span><span></span><span></span>
              <span></span><span></span><span></span><span></span>
            </div>
            <span class="sun-core"></span>
          </div>
        </div>
        <div class="card-info">
          <p class="location"><span class="pin" aria-hidden="true"></span> CALIFORNIA, USA</p>
          <div class="city-row">
            <h2>Palm Springs</h2>
            <p class="temperature">28<span class="degree">°</span></p>
          </div>
          <p class="description">Clear skies &amp; golden sunshine.</p>
        </div>
        <dl class="stats">
          <div><dt>Feels like</dt><dd>30°</dd></div>
          <div><dt>Humidity</dt><dd>28%</dd></div>
          <div><dt>Wind</dt><dd>8 km/h</dd></div>
        </dl>
      </article>

      <article class="weather-card rainy">
        <div class="card-head">
          <span class="weather-tag"><span class="tag-dot" aria-hidden="true"></span>Rainy</span>
          <span class="card-index">02 / 04</span>
        </div>
        <div class="weather-visual" aria-hidden="true">
          <span class="halo"></span>
          <span class="sparkle sparkle-a"></span>
          <span class="sparkle sparkle-b"></span>
          <div class="cloud"><span class="cloud-shade"></span></div>
          <div class="precipitation">
            <span class="rain-drop"></span><span class="rain-drop"></span><span class="rain-drop"></span>
            <span class="rain-drop"></span><span class="rain-drop"></span><span class="rain-drop"></span>
            <span class="rain-drop"></span><span class="rain-drop"></span><span class="rain-drop"></span>
          </div>
        </div>
        <div class="card-info">
          <p class="location"><span class="pin" aria-hidden="true"></span> OREGON, USA</p>
          <div class="city-row">
            <h2>Portland</h2>
            <p class="temperature">14<span class="degree">°</span></p>
          </div>
          <p class="description">Light rain throughout the day.</p>
        </div>
        <dl class="stats">
          <div><dt>Feels like</dt><dd>12°</dd></div>
          <div><dt>Humidity</dt><dd>86%</dd></div>
          <div><dt>Wind</dt><dd>12 km/h</dd></div>
        </dl>
      </article>

      <article class="weather-card snowy">
        <div class="card-head">
          <span class="weather-tag"><span class="tag-dot" aria-hidden="true"></span>Snowy</span>
          <span class="card-index">03 / 04</span>
        </div>
        <div class="weather-visual" aria-hidden="true">
          <span class="halo"></span>
          <span class="sparkle sparkle-a"></span>
          <span class="sparkle sparkle-b"></span>
          <div class="cloud"><span class="cloud-shade"></span></div>
          <div class="precipitation">
            <span class="snowflake"></span><span class="snowflake"></span><span class="snowflake"></span><span class="snowflake"></span>
            <span class="snowflake"></span><span class="snowflake"></span><span class="snowflake"></span><span class="snowflake"></span>
          </div>
        </div>
        <div class="card-info">
          <p class="location"><span class="pin" aria-hidden="true"></span> NORWAY</p>
          <div class="city-row">
            <h2>Oslo</h2>
            <p class="temperature">−4<span class="degree">°</span></p>
          </div>
          <p class="description">Soft snow flurries in the air.</p>
        </div>
        <dl class="stats">
          <div><dt>Feels like</dt><dd>−8°</dd></div>
          <div><dt>Humidity</dt><dd>79%</dd></div>
          <div><dt>Wind</dt><dd>9 km/h</dd></div>
        </dl>
      </article>

      <article class="weather-card stormy">
        <div class="card-head">
          <span class="weather-tag"><span class="tag-dot" aria-hidden="true"></span>Stormy</span>
          <span class="card-index">04 / 04</span>
        </div>
        <div class="weather-visual" aria-hidden="true">
          <span class="halo"></span>
          <span class="sparkle sparkle-a"></span>
          <span class="sparkle sparkle-b"></span>
          <div class="cloud"><span class="cloud-shade"></span></div>
          <div class="bolt-glow"><span class="bolt"></span></div>
        </div>
        <div class="card-info">
          <p class="location"><span class="pin" aria-hidden="true"></span> LOUISIANA, USA</p>
          <div class="city-row">
            <h2>New Orleans</h2>
            <p class="temperature">22<span class="degree">°</span></p>
          </div>
          <p class="description">Thunderstorms rolling in.</p>
        </div>
        <dl class="stats">
          <div><dt>Feels like</dt><dd>24°</dd></div>
          <div><dt>Humidity</dt><dd>91%</dd></div>
          <div><dt>Wind</dt><dd>22 km/h</dd></div>
        </dl>
      </article>
    </section>
  </main>

  <footer class="page-footer">
    <span class="footer-left"><span class="footer-mark" aria-hidden="true"></span> THERE'S BEAUTY IN EVERY FORECAST</span>
    <span>AN ANIMATED WEATHER STUDY <span class="footer-accent"> / &nbsp;01—04</span></span>
  </footer>
</div>
</body>
</html>
Reasoning trace (43,550 tokens)
**Designing a Weather Dashboard**

I'm focusing on crafting a polished and credible weather dashboard entirely using HTML and self-contained CSS. It needs animations for elements like sun rays or snowflakes, and to be responsive for both desktop and mobile views. I’m pondering the visual aesthetic to create a premium feel, perhaps with a dark navy background and vibrant card gradients. I need to ensure everything is readable and recognize the limitations: no external resources or JavaScript. It's an exciting challenge!**Designing weather icons**

I’m thinking the sun and cloud illustration should be the focal point—definitely polished and with some ambient halos. I want an ellipse to serve as a "platform" grounding it, using CSS for the weather icons. At the bottom, maybe I can include mini-labels displaying content metrics like "FEELS LIKE 29°," "HUMIDITY 28%," and "WIND" details as well. This all seems like it could create a nice, clean look!**Designing a sun graphic**

I'm thinking about creating a sun design with a center circle that's 78 units wide and using a radial gradient from a light yellow (#ffe69a) to a darker yellow (#ffbc34) for that sunny vibe. The rays will consist of eight rectangular rounded spokes, nicely arranged around the center. I'll use `span` elements for each ray and apply rotation angles to give it just the right look. This should give a cheerful and warm appearance!**Designing weather card styles**

I’m considering how to create a CSS inline style for a sun illustration. The rays start at the top and rotate around the center, with specific colors in mind. The core of the sun would be a creamy color, and I want to include sparkles without using SVG. For backgrounds, I’m planning gradients for sunny, rainy, snowy, and stormy weather, ensuring enough contrast between the different conditions. I'll also incorporate a cloud icon positioned centrally.**Addressing cloud position and styles**

I’m troubleshooting a positioning issue with the cloud design, particularly with the z-index. The cloud itself has specific dimensions and positioning to ensure it looks centered. I'm using gradients for the cloud body and its circular parts. I have to be careful about overlaps since they might show seams. I think using solid colors for the background could help maintain continuity, while shadows can enhance the cloud’s depth. The gradients should create a seamless look!**Designing raindrops animation**

I'm thinking about how to create the visual design of raindrops. Should I use a deep navy or light blue color? For the background, a medium blue paired with a bright light blue (#eefaff) seems inviting. I’m focusing on using HTML and CSS only, specifically employing nested spans to represent the drops. I plan to use CSS classes for positioning and animation. It’s critical to get the dimensions right for the drop shapes and ensure proper layering with z-index.**Considering CSS animations**

I'm thinking about using the CSS filter drop-shadow with clip-path and how they interact. It seems the filter might be applied before the clipping, causing a glow effect. I’ll add a wrapper for better control. I also want to add some animation effects, like a flash on the wrapper and some fun details for clouds and sun icons. But I need to handle user preferences for reduced motion to keep things accessible.**Adjusting animation for drops and flakes**

I'm focusing on how to set up the initial CSS for drops and flakes. If I set `top: 0`, they'll line up straight, so I’ll need to adjust this with custom values using delays. I want the animations to start with `translateY(0)` for visibility. I'll ensure the opacity transitions work at the endpoints. If users have reduced motion preferences, I’ll make adjustments so they can still see the effects without animations. Time to create a visually appealing layout!**Calculating art layout dimensions**

I’m working on the dimensions for an art layout. I have a card that is 428 units wide. The top row height is 36 units, and the height for the art is 190 units. The area for city labels and temperature is around 102 units, and the footer will be about 75 units. That adds up to 403 units, so I’ll also need to include some padding of 22 units.**Considering weather card design**

I'm thinking about how to structure the weather card. I have to include conditions like "feels like" values, humidity, and temperatures for different weather types. I might add a Celsius temperature option with a badge. The header could feature a segmented control labeled "°C," and maybe I can make a static display at the top right that says "TEMPERATURES IN °C." Also, I need a more elaborate design for the weather icon.**Considering rain art design**

The user seems to be talking about an interesting concept with sun rays rotating and a cloud shape centered at the top. I’m thinking of how to position the cloud in the art effectively using the code provided. It looks like I need to ensure the cloud body fits properly inside. I’ll establish the height as 194px for the art as I carry this design forward. It sounds like a fun project!**Considering cloud design**

I’m thinking about how pseudo-elements cover the body’s top and overlap at the lower areas, forming a visible seam. The circles could fill to the bottom, and a gradient can run from top to bottom. The white edges inside the cloud body might create some distinct arcs, which could be pretty. I wonder if I should add a smaller cloud behind it to show layers. However, reusing shapes with a doubled cloud might end up being distracting.**Calculating dimensions carefully**

I'm working on calculating precise dimensions for a layout. The body viewport measures 1280x800, and for the shell width, I’m using the minimum between 1160 and a calculation, which results in 1160 due to a 60 margin. The top bar has paddings and a brand height that help me position things correctly, establishing various coordinates for elements like the main hero, eyebrow, heading, and paragraphs. It's all about getting these numbers right for a well-structured design!**Considering CSS animations**

I'm thinking about the footer design with a live-type green dot and a message like "A small collection of ever-changing skies." It sounds good to have static weather animations with the sun rotating its rays, but I need to avoid any other animations that might conflict. I'm using some CSS code for that, making sure that `calc(var(--i) * 45deg)` is supported in Chrome 111 for multiplying numbers with angles. It's fascinating how CSS evolves!**Evaluating color design**

I’m thinking about how using a body gradient with bright circles could create an interesting effect, possibly yielding a white top. It's a simple idea, but it might actually look quite good! I want to consider what shades to use for the gradient and how the circles will integrate with the overall design. I’m curious about how this will turn out visually and whether it can enhance the overall aesthetic!**Designing animation styles**

I’m working on an animation for weather effects, specifically rain and storm elements. I need a vertical line of size 11px for snowfall, and I’m setting properties for the rain drops, giving them specific shapes and animations. The goal is to create snowflakes and raindrops that can animate independently within their defined positions. I’m also ensuring proper layering to keep effects visually appealing while checking details like opacity and timing for smooth transitions.**Refining clip shape**

I’m working on defining a clip shape which goes from points like `44% 0` to `90% 0`, and so on through various coordinates. The goal is to ensure the shape is visually plausible while forming from a diagonal perspective. I’ll be making sure that the transitions between these points create a cohesive effect that looks good in the animation. I guess it’s all about getting that balance right so the final result actually feels smooth and intentional!**Designing weather display**

I'm considering the layout for a weather display. It looks like the footer wraps, and I see that the user may want all cards visible on mobile. Stacked cards might require scrolling, which might not be ideal. I'm thinking about using a header that says "A little window to the weather." At a width of 375, the text would fit nicely into two lines. The overall look seems appealing!**Organizing weather data**

I've got the weather data broken down for several cities, like Lisbon with clear skies and 26°, and Portland with light rain at 14°. Oslo is chilly at -4° with snow flurries, while New Orleans is experiencing thunderstorms at 22°. It's worth noting that the data isn't live; I'm just working with what I've got. I'll need to format this neatly for presentation, making sure to showcase the key details for each city!**Styling weather layout**

I'm thinking about the footer icon stylization for `weather-grid` alignment. The `body::after` element might be noise, but using a CSS gradient creates a subtle grid with `background-size:64px 64px`. The user prefers no images, but gradients are technically acceptable. While the grid adds a professional touch, it's not essential. For the main title and headings, I'm considering using Georgia serif for a high-class feel, with various font sizes and weights to achieve sophistication. A blend of serif and sans serif can create a modern app look.**Planning layout and CSS**

I have a large token budget, which means I can really delve into the computational reasoning of the layout. It's key to correct the CSS to ensure there’s no overflow. I need to focus on planning the exact file structure with full CSS alongside HTML to make sure everything looks and functions properly. It's all about precision in these details as I work through it!**Designing weather icon elements**

I’m thinking about creating an outer ring that’s subtle, not overly techy. The styling includes a halo effect to give it a nice touch. I also want to incorporate a sun icon inside this ring, along with a cloud silhouette for added visual interest. 

Maybe I should consider adding some kind of horizon or shadow to enhance the dimensionality but keep in mind the user’s preference for non-3D icons. A small ellipse shadow beneath the icons could help blend the visuals together. Let’s see how it all comes together!**Designing box-shadow effects**

I'm considering how to set a `box-shadow` so that it only applies to the cloud base, which is a rectangle with rounded corners. I want to combine that with the silhouette of circles; the shadow shouldn't be too overwhelming. I'm thinking of a subtle effect that focuses more on the bottom area, giving a gentle depth while maintaining a clean, airy look. It seems like a nice balance might work well!**Designing raindrops and snowflakes**

I'm exploring how to create raindrops that look like drops falling. They should have rounded capsules, and I can achieve this with a `border-radius` of 50%. I’ll also experiment with dimensions like `width: 4; height: 12;` for the drop shape. For snowflakes, I'm looking at styling it with a specific class to create a snowfall effect using CSS. I want to make sure it looks visually appealing and feels realistic!**Considering design choices**

I’m thinking about whether to include tiny numeric sun elevation details like `07:12` and `SUNRISE`. The user didn’t specifically ask for this, and I don’t want to make things look too busy. I already have stats in place, so I want to keep the design clean. I’m also considering adding footer stats for wind speed in km/h, which could require careful spacing at a content width of 236 with 3 columns and a gap of 8.**Planning screenshot timing**

I’m thinking about the timing for taking screenshots, specifically around three seconds from when the load starts. This will catch the style animation right away, and I estimate it will be around 65.2% at that point. I’ve already noted the flash timings at about 2.76 and 2.99 seconds. The sun's rotation takes 14 seconds, so by three seconds in, it should be positioned at around 77 degrees. Everything seems to be in sync!**Clarifying weather presentation**

I plan to use a deck titled "Today, in four different places," showcasing a collection of skies from various locations. For the hero title, I’ll use exactly “A little window to the weather.” I’ll include a subtitle: “Four cities. Four forecasts. One lovely reason to look up.” The hero aside will have a label “THE COLLECTION,” with digits “04 / 04” indicating the fourth sequence. Finally, I’ll format additional information about the collection's cities clearly.**Refining animation CSS**

I'm thinking about reducing animation CSS with a media query for users who prefer reduced motion. In the code, I'm setting everything, including transitions, to none. I noticed that the `.cloud` elements have static positions while the `rain-drop` variables are custom-defined, which keeps things interesting. Maybe I can generalize the `top` variable for all rain drops and set a default value. I believe this way, the reduced motion effect can be effectively optimized. The snow seems fine as it is!**Ensuring screen reader accuracy**

I see the screen reader reads `28 degrees Celsius`, and I think there’s no need for aria attributes here. The code is repeated four times, which seems unnecessary. The Celsius header is marked with `°C`, so it’s straightforward. I notice that there’s a visually hidden span inside `.temp`, with a large font but positioned absolutely—am I doing this correctly with a relative outer? Using `.sr-only` is conventional, but I hope it has the right effect!**Evaluating demo visibility**

I'm reviewing what the developer said about ensuring everything that makes the demo interesting needs to be visible in the first few seconds. It’s key that nothing important is hidden behind scores or other elements, right? All the animations should be there right away with no delays, and I think having initial stats and all cards above the fold on desktop is good for that. Also, keeping everything inline with CSS and JS makes sense—no external files!**Exploring snowflake design**

I'm noticing a subtle issue with the snowflake `::before` and `::after` pseudo-elements. They seem to be set up correctly with their dimensions, which is good, but I wonder if I could create more detailed snowflakes by adding extra limbs. For instance, setting `transform: rotate(60deg)` and `transform: rotate(-60deg)` might help achieve the six arms look. However, I question whether I need the moon symbol, as the cloud visual starts losing its shape without a shadow on the pseudo-elements.**Considering art layout adjustments**

I'm contemplating whether to reduce the art height to 185. I worry that increasing the gap might create a strange look, but I think putting information lower, along with screenshot card icons at the top and the city at the bottom, could make it feel more intentional. It's interesting to think about how these changes might impact the overall aesthetics of the design. I'll weigh the pros and cons carefully!**Thinking about weather visuals**

I'm considering how cloud rain has a similar silhouette to snow and storms, but what really sets them apart is the precipitation. I want to mentally assemble the complete code and check the style before finalizing it. It's important to ensure the visual quality is high. We should remember that when comparing outputs visually, the screenshots need to showcase the weather icons and cards clearly – no footers should be cut off. The title should be large enough, and each card should contain focused illustrations representing the region, city, and relevant info for a premium look.**Implementing CSS for Location Pin**

I think I need to implement a location pin using CSS. I've got a basic style defined for the pin class, which includes width, height, and border radius to create a rounded shape. I also want to use a `box-sizing` property to manage the sizing better. For the humidity stats, I see no need to use uppercase for "Humidity." However, I’m a bit concerned that the `color-scheme:dark` property could affect the text color of the stats. I need to double-check that it inherits correctly.**Reviewing layout elements**

I'm analyzing the layout for some card info. The remaining info margin seems to be auto, maybe around 27 pixels. The card info starts at a bottom padding of 20 pixels, which is good, and the stats total looks fine. The footer has a dark body. I might add a `--weather-shadow`, but it's looking okay overall. The sun icon colors seem good against the card gradient, making it easy to see. The screenshot makes the sun unmistakable, and I’ve checked the cloud area too.**Optimizing Mobile Card Layout**

I'm thinking about how to improve the visibility of city cards on mobile devices. While I didn't expect to see all cards without scrolling, it might be beneficial to adapt the layout for compact horizontal cards to display more cities. The goal is to maintain a stacked grid, keeping the essential information clear. I should also consider the height of the mobile cards and whether making icons smaller would still allow for a good visual experience.**Refining Mobile Card Display**

I see that the developer requirement indicates the mobile view should show meaningful content within the first few seconds without scrolling. Currently, there’s one full and one partial card being displayed. I’m considering adapting the layout to compact horizontal cards so that all four can fit on the screen better. The user wants four animated weather cards, which might look nice arranged horizontally with statistics at the footer. I'll need to keep the visual appeal for mobile users in mind.**Designing Mobile Card Layout**

I'm considering using a media query for screens under 600px to scale the art and reorganize the card layout. I think adjusting the card heights to around 174 could work, but even with that, not everything fits within the mobile view. I could hide the stats and reduce the height even more for better visibility, ensuring all four cards show up. Each card should be thin yet visually appealing, with icons on the left and temperature information on the right.**Considering responsive design**

The developer specified that the design should effectively display at 1280×800 and adapt down to 375 pixels without horizontal scrollbars. While a compact mobile design could be beneficial, it adds complexity and potential for errors. At 375 pixels, we can fit four cards with a header comfortably. I’m contemplating focusing on scaling illustrations and possibly hiding less crucial information, like some data from the weather card, to ensure a clean interface. The CSS for the mobile version requires careful adjustments for proper alignment and scaling.**Evaluating layout dimensions**

I'm checking the positioning of elements on the stage and adjusting for the weather card design. After some calculations, the card fits well within the border. I want to ensure everything is neatly organized. The card's content, like text sizes and margins, seems to be within my desired dimensions, including the temperature and description areas. Everything appears to align perfectly, so I think I'm on track for a polished final result!**Analyzing mobile layout**

I'm looking at the mobile layout for my HTML design. For a width of 375, the text wraps nicely, and all four list cards are small yet arranged aesthetically. The city and temperature are prominent, while stats are hidden on mobile. At 600 width, the layout adjusts with icons fixed and text areas defined. I'm considering if the title fits at this breakpoint and how the card content space looks. Overall, the cards seem polished and flexible, but I need to ensure there's no overflow issue.**Reviewing variable assignments**

I'm working on defining variables for cloud types like rain, snow, and storm. Each has its own specific color codes and shade settings. For a stormy look, I'm using a lighter cloud with darker shadow effects, while adding drop-shadow effects for realism. 

The lightning animation keyframes are set to create flickering effects at specific intervals, ensuring they follow accessibility standards. I’m ensuring the flashing effect isn't overwhelming for viewers. Overall, it's about balancing aesthetics and usability!**Adjusting flash frequency**

I'm considering reducing the lightning flash effect frequency to two flashes approximately 0.2 seconds apart within a total duration of 5 seconds. This would equate to a frequency of around 5 Hz. It seems like a better balance, especially for viewers' comfort while still achieving dramatic impact. I want to ensure my adjustments adhere to accessibility standards, making the experience enjoyable for everyone without overwhelming them.**Calculating mobile icons**

I’m figuring out the scales for mobile weather icons. For instance, the orbit size is 158 times 0.59, giving me 93. The outer size is 186 times 0.59, which equals 110. The icon disk size is 80 times 0.59, resulting in 47, along with a circumference of 84 for the rays. Everything seems readable!

For the desktop, the ring is faint and thin, which contrasts just fine. I think using CSS for the weather icon's style could work well, like marking “RAINY” in uppercase.