Gemini 3.8 Flash
by GoogleReasoningClean
Running live in a sandboxed frame. Click inside it before using the keyboard.
How it went
- Total time
- 2 min 20 s
- Cost
- $0.095
- Output tokens
- 25,147
- Spent thinking
- 15,951 tokens
- Speed
- 191.5 tok/s
- Console errors
- 0
- First token after
- 9.1 s
- First visible text after
- 1 min 37 s
- Prompt tokens
- 508
- Code size
- 26.0 KB
- Finish reason
- stop
- Served by
- Model id
google/gemini-3.8-flash- Reasoning sent
{"effort":"high"}- Max output
- 65,536 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 · 974 lines
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Atmosphere Weather Cards</title>
<style>
/* ==========================================================================
RESET & BASE STYLES
========================================================================== */
*, *::before, *::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
body {
min-height: 100vh;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
padding: 24px 16px;
background: radial-gradient(circle at 50% 10%, #1e293b 0%, #0f172a 60%, #020617 100%);
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
color: #ffffff;
overflow-x: hidden;
}
/* ==========================================================================
HEADER
========================================================================== */
.app-header {
text-align: center;
margin-bottom: 28px;
}
.badge-live {
display: inline-flex;
align-items: center;
gap: 6px;
padding: 4px 12px;
border-radius: 999px;
background: rgba(255, 255, 255, 0.08);
border: 1px solid rgba(255, 255, 255, 0.15);
font-size: 0.72rem;
font-weight: 600;
letter-spacing: 0.08em;
text-transform: uppercase;
color: #94a3b8;
margin-bottom: 8px;
}
.live-dot {
width: 6px;
height: 6px;
border-radius: 50%;
background: #22c55e;
box-shadow: 0 0 8px #22c55e;
animation: pulseDot 2s infinite ease-in-out;
}
@keyframes pulseDot {
0%, 100% { opacity: 1; transform: scale(1); }
50% { opacity: 0.4; transform: scale(0.75); }
}
.app-title {
font-size: clamp(1.4rem, 2.8vw, 2rem);
font-weight: 800;
letter-spacing: -0.02em;
background: linear-gradient(180deg, #ffffff 0%, #cbd5e1 100%);
-webkit-background-clip: text;
-webkit-text-fill-color: transparent;
margin-bottom: 4px;
}
.app-subtitle {
font-size: 0.85rem;
color: #64748b;
font-weight: 500;
}
/* ==========================================================================
CARDS GRID LAYOUT
========================================================================== */
.weather-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 20px;
width: 100%;
max-width: 1140px;
}
@media (max-width: 1024px) {
.weather-grid {
grid-template-columns: repeat(2, 1fr);
max-width: 580px;
}
}
@media (max-width: 560px) {
.weather-grid {
grid-template-columns: 1fr;
max-width: 320px;
}
}
/* ==========================================================================
WEATHER CARD COMPONENT
========================================================================== */
.weather-card {
position: relative;
border-radius: 24px;
padding: 24px 20px 20px;
display: flex;
flex-direction: column;
isolation: isolate;
border: 1px solid rgba(255, 255, 255, 0.22);
box-shadow: 0 16px 36px -12px rgba(0, 0, 0, 0.5), inset 0 1px 1px rgba(255, 255, 255, 0.35);
transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.25), box-shadow 0.4s ease;
cursor: default;
overflow: hidden;
}
.weather-card::before {
content: '';
position: absolute;
inset: -1px;
border-radius: inherit;
background: inherit;
filter: blur(22px);
z-index: -1;
opacity: 0.35;
transition: opacity 0.4s ease, filter 0.4s ease;
}
.weather-card:hover {
transform: translateY(-10px) scale(1.02);
box-shadow: 0 28px 50px -15px rgba(0, 0, 0, 0.7), inset 0 1px 2px rgba(255, 255, 255, 0.5);
}
.weather-card:hover::before {
opacity: 0.7;
filter: blur(28px);
}
/* Gradients per card */
.card-sunny {
background: linear-gradient(155deg, #f59e0b 0%, #ea580c 48%, #9a3412 100%);
border-color: rgba(254, 240, 138, 0.45);
}
.card-rainy {
background: linear-gradient(155deg, #2563eb 0%, #1d4ed8 45%, #0f172a 100%);
border-color: rgba(147, 197, 253, 0.35);
}
.card-snowy {
background: linear-gradient(155deg, #0284c7 0%, #3b82f6 45%, #1e1b4b 100%);
border-color: rgba(224, 242, 254, 0.45);
}
.card-stormy {
background: linear-gradient(155deg, #4c1d95 0%, #2e1065 48%, #09090b 100%);
border-color: rgba(192, 132, 252, 0.35);
}
/* ==========================================================================
CARD HEADER (CITY & COUNTRY)
========================================================================== */
.card-header {
display: flex;
align-items: center;
justify-content: space-between;
margin-bottom: 12px;
}
.city-wrapper {
display: flex;
align-items: center;
gap: 6px;
}
/* CSS-only Location Pin */
.location-pin {
width: 7px;
height: 7px;
border: 2px solid rgba(255, 255, 255, 0.85);
border-radius: 50% 50% 50% 0;
transform: rotate(-45deg);
display: inline-block;
}
.city-name {
font-size: 1.12rem;
font-weight: 700;
letter-spacing: -0.01em;
text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}
.country-tag {
font-size: 0.68rem;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.08em;
padding: 3px 8px;
border-radius: 999px;
background: rgba(255, 255, 255, 0.18);
backdrop-filter: blur(4px);
}
/* ==========================================================================
WEATHER ART STAGE
========================================================================== */
.art-stage {
height: 110px;
display: flex;
align-items: center;
justify-content: center;
position: relative;
margin-bottom: 6px;
}
/* --------------------------------------------------------------------------
1. SUNNY ICON (CSS Only: Core + 12 Rotating Ray Beams)
-------------------------------------------------------------------------- */
.sunny-art {
width: 100px;
height: 100px;
position: relative;
display: flex;
align-items: center;
justify-content: center;
}
.sun-rays {
position: absolute;
width: 100px;
height: 100px;
animation: spinRays 20s linear infinite;
}
@keyframes spinRays {
to { transform: rotate(360deg); }
}
/* Each ray span draws 2 symmetrical points (top and bottom) */
.ray {
position: absolute;
top: 50%;
left: 50%;
width: 4px;
height: 98px;
margin-top: -49px;
margin-left: -2px;
border-radius: 2px;
background: linear-gradient(
to bottom,
#fef08a 0%,
#f59e0b 16%,
transparent 18%,
transparent 82%,
#f59e0b 84%,
#fef08a 100%
);
}
.r1 { transform: rotate(0deg); }
.r2 { transform: rotate(30deg); }
.r3 { transform: rotate(60deg); }
.r4 { transform: rotate(90deg); }
.r5 { transform: rotate(120deg); }
.r6 { transform: rotate(150deg); }
.sun-disc {
position: relative;
z-index: 2;
width: 52px;
height: 52px;
border-radius: 50%;
background: radial-gradient(circle at 35% 35%, #fffbeb 0%, #fbbf24 55%, #f59e0b 100%);
box-shadow: 0 0 28px rgba(251, 191, 36, 0.95), inset 0 2px 4px rgba(255, 255, 255, 0.8);
animation: pulseSun 3s ease-in-out infinite alternate;
}
@keyframes pulseSun {
0% { transform: scale(0.96); box-shadow: 0 0 22px rgba(251, 191, 36, 0.85); }
100% { transform: scale(1.04); box-shadow: 0 0 34px rgba(251, 191, 36, 1); }
}
/* --------------------------------------------------------------------------
SHARED CLOUD SHAPES (CSS Only)
-------------------------------------------------------------------------- */
.cloud-front {
position: relative;
width: 80px;
height: 28px;
border-radius: 20px;
z-index: 2;
animation: floatCloud 4s ease-in-out infinite alternate;
}
.cloud-front::before {
content: '';
position: absolute;
width: 42px;
height: 42px;
border-radius: 50%;
top: -20px;
left: 10px;
background: inherit;
}
.cloud-front::after {
content: '';
position: absolute;
width: 32px;
height: 32px;
border-radius: 50%;
top: -12px;
left: 40px;
background: inherit;
}
.cloud-back {
position: absolute;
width: 68px;
height: 24px;
border-radius: 20px;
top: 24px;
left: 36px;
z-index: 1;
animation: floatCloudBack 5s ease-in-out infinite alternate;
}
.cloud-back::before {
content: '';
position: absolute;
width: 36px;
height: 36px;
border-radius: 50%;
top: -16px;
left: 16px;
background: inherit;
}
@keyframes floatCloud {
0% { transform: translateY(0); }
100% { transform: translateY(-4px); }
}
@keyframes floatCloudBack {
0% { transform: translateY(0) translateX(0); }
100% { transform: translateY(-2px) translateX(3px); }
}
/* --------------------------------------------------------------------------
2. RAINY ICON (CSS Only: Fluffy Cloud + Staggered Rain Drops)
-------------------------------------------------------------------------- */
.rainy-art {
width: 100px;
height: 100px;
position: relative;
display: flex;
flex-direction: column;
align-items: center;
justify-content: flex-start;
padding-top: 14px;
}
.rain-cloud {
background: #cbd5e1;
box-shadow: 0 6px 14px rgba(15, 23, 42, 0.35), inset 0 -2px 4px rgba(0, 0, 0, 0.15);
}
.rain-cloud::before {
background: #e2e8f0;
}
.rain-cloud-back {
background: #94a3b8;
opacity: 0.75;
}
.rain-chamber {
position: absolute;
top: 50px;
width: 80px;
height: 46px;
z-index: 3;
}
.rain-drop {
position: absolute;
width: 3px;
height: 14px;
border-radius: 2px;
background: linear-gradient(180deg, rgba(147, 197, 253, 0.2), #38bdf8 90%);
transform: rotate(15deg);
animation: fallRain 0.85s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}
.rd1 { left: 10px; animation-delay: 0.05s; animation-duration: 0.8s; }
.rd2 { left: 24px; animation-delay: 0.4s; animation-duration: 0.9s; }
.rd3 { left: 38px; animation-delay: 0.2s; animation-duration: 0.82s; }
.rd4 { left: 52px; animation-delay: 0.6s; animation-duration: 0.88s; }
.rd5 { left: 66px; animation-delay: 0.3s; animation-duration: 0.78s; }
@keyframes fallRain {
0% {
transform: translateY(-8px) rotate(15deg);
opacity: 0;
}
25% {
opacity: 1;
}
80% {
opacity: 1;
}
100% {
transform: translateY(34px) rotate(15deg);
opacity: 0;
}
}
/* --------------------------------------------------------------------------
3. SNOWY ICON (CSS Only: Icy Cloud + 6-Pointed Drifting Snow Crystals)
-------------------------------------------------------------------------- */
.snowy-art {
width: 100px;
height: 100px;
position: relative;
display: flex;
flex-direction: column;
align-items: center;
justify-content: flex-start;
padding-top: 14px;
}
.snow-cloud {
background: #e0f2fe;
box-shadow: 0 6px 14px rgba(15, 23, 42, 0.25), inset 0 -2px 4px rgba(56, 189, 248, 0.2);
}
.snow-cloud::before {
background: #ffffff;
}
.snow-chamber {
position: absolute;
top: 48px;
width: 80px;
height: 50px;
z-index: 3;
}
/* 6-pointed snowflake generated via element + 2 rotated pseudo-elements */
.snowflake {
position: absolute;
width: 2px;
height: 12px;
background: #ffffff;
border-radius: 2px;
box-shadow: 0 0 6px rgba(255, 255, 255, 0.9);
}
.snowflake::before,
.snowflake::after {
content: '';
position: absolute;
inset: 0;
background: #ffffff;
border-radius: 2px;
box-shadow: 0 0 6px rgba(255, 255, 255, 0.9);
}
.snowflake::before { transform: rotate(60deg); }
.snowflake::after { transform: rotate(-60deg); }
.sf1 {
left: 12px;
animation: driftSnowA 3s ease-in-out infinite;
animation-delay: 0.1s;
transform: scale(0.85);
}
.sf2 {
left: 32px;
animation: driftSnowB 3.4s ease-in-out infinite;
animation-delay: 0.9s;
transform: scale(1.1);
}
.sf3 {
left: 50px;
animation: driftSnowA 3.1s ease-in-out infinite;
animation-delay: 1.6s;
transform: scale(0.75);
}
.sf4 {
left: 68px;
animation: driftSnowB 2.8s ease-in-out infinite;
animation-delay: 0.4s;
transform: scale(1);
}
@keyframes driftSnowA {
0% {
transform: translateY(-8px) translateX(-3px) rotate(0deg) scale(0.85);
opacity: 0;
}
20% { opacity: 1; }
80% { opacity: 0.9; }
100% {
transform: translateY(38px) translateX(6px) rotate(160deg) scale(0.85);
opacity: 0;
}
}
@keyframes driftSnowB {
0% {
transform: translateY(-8px) translateX(4px) rotate(0deg) scale(1.05);
opacity: 0;
}
20% { opacity: 1; }
80% { opacity: 0.9; }
100% {
transform: translateY(38px) translateX(-5px) rotate(-140deg) scale(1.05);
opacity: 0;
}
}
/* --------------------------------------------------------------------------
4. STORMY ICON (CSS Only: Flashing Thundercloud + Jagged Lightning Bolt)
-------------------------------------------------------------------------- */
.stormy-art {
width: 100px;
height: 100px;
position: relative;
display: flex;
flex-direction: column;
align-items: center;
justify-content: flex-start;
padding-top: 14px;
}
.storm-cloud {
background: #334155;
box-shadow: 0 6px 14px rgba(0, 0, 0, 0.45);
animation: cloudLightningFlash 3s ease-in-out infinite;
}
.storm-cloud::before {
background: #475569;
}
.storm-cloud-back {
background: #1e293b;
opacity: 0.9;
}
/* Lightning bolt using CSS clip-path polygon */
.lightning-bolt {
position: absolute;
top: 36px;
left: 36px;
width: 24px;
height: 46px;
background: linear-gradient(180deg, #ffffff 0%, #fef08a 25%, #eab308 100%);
clip-path: polygon(46% 0%, 14% 50%, 48% 50%, 22% 100%, 88% 42%, 52% 42%);
filter: drop-shadow(0 0 10px rgba(250, 204, 21, 0.95));
z-index: 3;
animation: strikeFlash 3s ease-in-out infinite;
}
@keyframes strikeFlash {
0%, 18%, 27%, 68%, 76%, 100% {
opacity: 0;
transform: scale(0.85) translateY(-3px);
}
19% {
opacity: 1;
transform: scale(1.12) translateY(1px);
filter: drop-shadow(0 0 22px #ffffff) drop-shadow(0 0 35px #facc15);
}
21% {
opacity: 0.25;
}
23% {
opacity: 1;
transform: scale(1.05);
filter: drop-shadow(0 0 18px #fef08a);
}
25% {
opacity: 0.8;
}
26% {
opacity: 0;
}
70% {
opacity: 1;
transform: scale(1.02);
filter: drop-shadow(0 0 14px #facc15);
}
72% {
opacity: 0.3;
}
74% {
opacity: 0.9;
}
}
@keyframes cloudLightningFlash {
0%, 18%, 27%, 68%, 76%, 100% {
filter: brightness(1);
}
19%, 23% {
filter: brightness(2.1) drop-shadow(0 0 12px rgba(254, 240, 138, 0.8));
}
70%, 74% {
filter: brightness(1.6) drop-shadow(0 0 8px rgba(254, 240, 138, 0.5));
}
}
.storm-rain-chamber {
position: absolute;
top: 54px;
width: 76px;
height: 38px;
z-index: 1;
}
.storm-drop {
position: absolute;
width: 2.5px;
height: 16px;
background: linear-gradient(180deg, rgba(147, 197, 253, 0.2), #60a5fa);
border-radius: 1px;
transform: rotate(24deg);
animation: stormFall 0.48s linear infinite;
}
.sd1 { left: 14px; animation-delay: 0.05s; }
.sd2 { left: 38px; animation-delay: 0.22s; }
.sd3 { left: 62px; animation-delay: 0.35s; }
@keyframes stormFall {
0% { transform: translateY(-8px) rotate(24deg); opacity: 0; }
20% { opacity: 0.8; }
80% { opacity: 0.8; }
100% { transform: translateY(28px) rotate(24deg); opacity: 0; }
}
/* ==========================================================================
TEMPERATURE & DESCRIPTION
========================================================================== */
.temp-display {
display: flex;
align-items: baseline;
justify-content: center;
margin-bottom: 4px;
}
.temp-value {
font-size: 3.2rem;
font-weight: 800;
line-height: 1;
letter-spacing: -0.04em;
text-shadow: 0 2px 4px rgba(0, 0, 0, 0.25);
}
.temp-unit {
font-size: 1.4rem;
font-weight: 500;
opacity: 0.88;
margin-left: 2px;
}
.weather-info {
text-align: center;
margin-bottom: 14px;
}
.condition-title {
font-size: 1.18rem;
font-weight: 700;
margin-bottom: 2px;
letter-spacing: -0.01em;
}
.condition-desc {
font-size: 0.82rem;
line-height: 1.35;
opacity: 0.82;
min-height: 2.2em;
}
.card-divider {
height: 1px;
background: rgba(255, 255, 255, 0.16);
margin-bottom: 14px;
}
/* ==========================================================================
WEATHER METADATA STATS (HUMIDITY, WIND, INDEX)
========================================================================== */
.stats-row {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 6px;
text-align: center;
}
.stat-box {
display: flex;
flex-direction: column;
padding: 6px 4px;
border-radius: 12px;
background: rgba(0, 0, 0, 0.12);
}
.stat-label {
font-size: 0.64rem;
font-weight: 600;
text-transform: uppercase;
letter-spacing: 0.05em;
opacity: 0.7;
margin-bottom: 2px;
}
.stat-val {
font-size: 0.82rem;
font-weight: 700;
}
/* ==========================================================================
PREFERS-REDUCED-MOTION SUPPORT
========================================================================== */
@media (prefers-reduced-motion: reduce) {
*, *::before, *::after {
animation-duration: 0.01ms !important;
animation-iteration-count: 1 !important;
transition-duration: 0.01ms !important;
}
.weather-card:hover {
transform: none !important;
}
}
</style>
</head>
<body>
<header class="app-header">
<div class="badge-live">
<span class="live-dot"></span>
Live Forecast
</div>
<h1 class="app-title">Atmosphere</h1>
<p class="app-subtitle">Animated Pure CSS Weather Systems</p>
</header>
<main class="weather-grid">
<!-- 1. SUNNY CARD -->
<article class="weather-card card-sunny">
<header class="card-header">
<div class="city-wrapper">
<span class="location-pin" aria-hidden="true"></span>
<span class="city-name">Cairo</span>
</div>
<span class="country-tag">EGY</span>
</header>
<div class="art-stage">
<div class="sunny-art" aria-label="Rotating sun rays animation">
<div class="sun-rays">
<span class="ray r1"></span>
<span class="ray r2"></span>
<span class="ray r3"></span>
<span class="ray r4"></span>
<span class="ray r5"></span>
<span class="ray r6"></span>
</div>
<div class="sun-disc"></div>
</div>
</div>
<div class="temp-display">
<span class="temp-value">34</span>
<span class="temp-unit">°C</span>
</div>
<div class="weather-info">
<h2 class="condition-title">Sunny</h2>
<p class="condition-desc">Radiant sunshine with clear blue skies</p>
</div>
<div class="card-divider"></div>
<footer class="stats-row">
<div class="stat-box">
<span class="stat-label">Humidity</span>
<span class="stat-val">22%</span>
</div>
<div class="stat-box">
<span class="stat-label">Wind</span>
<span class="stat-val">14 km/h</span>
</div>
<div class="stat-box">
<span class="stat-label">UV Index</span>
<span class="stat-val">9 High</span>
</div>
</footer>
</article>
<!-- 2. RAINY CARD -->
<article class="weather-card card-rainy">
<header class="card-header">
<div class="city-wrapper">
<span class="location-pin" aria-hidden="true"></span>
<span class="city-name">London</span>
</div>
<span class="country-tag">UK</span>
</header>
<div class="art-stage">
<div class="rainy-art" aria-label="Falling rain animation">
<div class="cloud-back rain-cloud-back"></div>
<div class="cloud-front rain-cloud"></div>
<div class="rain-chamber">
<span class="rain-drop rd1"></span>
<span class="rain-drop rd2"></span>
<span class="rain-drop rd3"></span>
<span class="rain-drop rd4"></span>
<span class="rain-drop rd5"></span>
</div>
</div>
</div>
<div class="temp-display">
<span class="temp-value">13</span>
<span class="temp-unit">°C</span>
</div>
<div class="weather-info">
<h2 class="condition-title">Rainy</h2>
<p class="condition-desc">Steady showers and overcast misty skies</p>
</div>
<div class="card-divider"></div>
<footer class="stats-row">
<div class="stat-box">
<span class="stat-label">Humidity</span>
<span class="stat-val">88%</span>
</div>
<div class="stat-box">
<span class="stat-label">Wind</span>
<span class="stat-val">22 km/h</span>
</div>
<div class="stat-box">
<span class="stat-label">Precip</span>
<span class="stat-val">85%</span>
</div>
</footer>
</article>
<!-- 3. SNOWY CARD -->
<article class="weather-card card-snowy">
<header class="card-header">
<div class="city-wrapper">
<span class="location-pin" aria-hidden="true"></span>
<span class="city-name">Oslo</span>
</div>
<span class="country-tag">NOR</span>
</header>
<div class="art-stage">
<div class="snowy-art" aria-label="Drifting snowflakes animation">
<div class="cloud-front snow-cloud"></div>
<div class="snow-chamber">
<span class="snowflake sf1"></span>
<span class="snowflake sf2"></span>
<span class="snowflake sf3"></span>
<span class="snowflake sf4"></span>
</div>
</div>
</div>
<div class="temp-display">
<span class="temp-value">-4</span>
<span class="temp-unit">°C</span>
</div>
<div class="weather-info">
<h2 class="condition-title">Snowy</h2>
<p class="condition-desc">Calm powder flurries with freezing frost</p>
</div>
<div class="card-divider"></div>
<footer class="stats-row">
<div class="stat-box">
<span class="stat-label">Humidity</span>
<span class="stat-val">76%</span>
</div>
<div class="stat-box">
<span class="stat-label">Wind</span>
<span class="stat-val">9 km/h</span>
</div>
<div class="stat-box">
<span class="stat-label">Snowfall</span>
<span class="stat-val">12 cm</span>
</div>
</footer>
</article>
<!-- 4. STORMY CARD -->
<article class="weather-card card-stormy">
<header class="card-header">
<div class="city-wrapper">
<span class="location-pin" aria-hidden="true"></span>
<span class="city-name">Singapore</span>
</div>
<span class="country-tag">SGP</span>
</header>
<div class="art-stage">
<div class="stormy-art" aria-label="Flashing lightning storm animation">
<div class="cloud-back storm-cloud-back"></div>
<div class="cloud-front storm-cloud"></div>
<div class="lightning-bolt"></div>
<div class="storm-rain-chamber">
<span class="storm-drop sd1"></span>
<span class="storm-drop sd2"></span>
<span class="storm-drop sd3"></span>
</div>
</div>
</div>
<div class="temp-display">
<span class="temp-value">27</span>
<span class="temp-unit">°C</span>
</div>
<div class="weather-info">
<h2 class="condition-title">Stormy</h2>
<p class="condition-desc">Heavy thunderclaps and sudden lightning</p>
</div>
<div class="card-divider"></div>
<footer class="stats-row">
<div class="stat-box">
<span class="stat-label">Humidity</span>
<span class="stat-val">94%</span>
</div>
<div class="stat-box">
<span class="stat-label">Wind</span>
<span class="stat-val">38 km/h</span>
</div>
<div class="stat-box">
<span class="stat-label">Severe</span>
<span class="stat-val">95%</span>
</div>
</footer>
</article>
</main>
</body>
</html>Reasoning trace (15,951 tokens)
**Designing Weather Cards** I'm focused on crafting four distinct animated weather cards using only HTML and CSS. My current attention is on implementing the visual states for sunny, rainy, snowy, and stormy conditions, ensuring smooth transitions without any JavaScript. **Crafting Animated Weather Cards** I'm diligently constructing four distinct animated weather cards using only HTML and CSS, ensuring no reliance on external assets or JavaScript for functionality. My current efforts are centered on the meticulous design and animation of CSS-generated icons for sunny, rainy, snowy, and stormy conditions, alongside their corresponding gradient backgrounds and responsive layout. **Styling Sunny Icon** I'm perfecting the sunny icon, focusing on a central sun disc rendered with a radial gradient for depth. I'm adjusting the size and positioning of `::before` and `::after` elements to create a soft, puffy cloud shape, aiming for a ~100px icon zone. **Animating Sun Rays** I'm refining the sunny icon's animation, experimenting with generating the sun's rays using rotated span elements within a container. My focus is on achieving an infinite, smooth spin for the rays, alongside a subtle pulsing effect on the sun's disc. **Developing Rainy Icon** I'm now building the rainy icon, focusing on a soft, grey-blue cloud with subtle highlights. Below it, I'm designing 3-4 capsule-shaped raindrops using CSS, which will animate to fall and fade out with staggered delays. **Creating Snowy Icon** I'm designing the snowy icon, envisioning a frosty white cloud with a cyan tint. My current challenge is creating delicate, 6-pointed snowflakes using pure CSS, exploring asterisks or multi-armed shapes with box shadows to simulate their crystalline structure. **Perfecting Snowy Flakes** I've successfully crafted a symmetric, six-pointed snowflake using pure CSS. Now, I'm implementing multiple snowflakes with varied sizes and positions, animating them to drift down with a gentle sway. I'm also developing a dark, moody cloud and a sharp, zigzag lightning bolt using `clip-path`, preparing for intense flash animations. **Designing Stormy Lightning** I've finalized the lightning bolt's shape using `clip-path` and am now focused on its rapid, flashing animation, synchronized with brief flashes on the storm cloud. I'm also adding intense, angled rain streaks to complete the stormy card. Additionally, I'm defining the overall card layout, including typography for city names, temperatures, and descriptive weather text. **Finalizing Layouts** I'm solidifying the overall card dimensions and responsive layout for desktop, ensuring four cards fit neatly side-by-side with appropriate margins. I'm also implementing the hover effect with a smooth transition to elevate the user experience. The cloud styling is being refined using multiple puff elements for a more realistic, dynamic appearance. **Refining Cloud Layers** I'm currently enhancing the cloud elements by introducing a second layer of "fluff" to create more depth and realism within the weather cards. I'm also experimenting with the structural markup to accommodate these multiple cloud layers, allowing for subtle parallax effects and an improved visual aesthetic. **Animating Cloud Layers** I'm now integrating a background cloud layer with a slightly darker hue that drifts slowly, adding depth. I'm also refining the floating animation for the main clouds, aiming for a subtle, continuous movement. The rain drops are being positioned and styled for staggered fall animations. **Animating Rain Drops** I'm fine-tuning the rain animation, adjusting drop positions and stagger delays to create a more natural, dynamic falling effect. I'm ensuring each drop's journey is visible from its appearance to its disappearance. **Generating Snowy Flakes** I'm meticulously crafting 6-pointed snowflakes using CSS, experimenting with `box-shadow` for their crystalline structure. My focus is on generating multiple flakes of varying sizes and animating their gentle drift with unique timings. **Animating Snowflakes** I'm implementing four distinct snowflake animations, varying their scales, translations, and rotations to achieve a magical, realistic drift. Each flake will have unique timings for a more dynamic fall. **Animating Lightning Flash** I'm fine-tuning the lightning flash animation, synchronizing sharp, bright flashes with the storm cloud's brief illuminations. I'm also ensuring the angled rain streaks are adequately defined to complement the intense storm effect. **Synchronizing Storm Effects** I'm meticulously syncing the lightning flash animation with synchronized brightness bursts on the storm cloud. I'm also refining the intensity and duration of these flashes, ensuring they accurately reflect a powerful thunderstorm alongside the angled rain streaks. **Synchronizing Storm Effects** **Refining Card Content** I'm integrating the specific location details and meteorological data into each card's structure, ensuring accurate display of temperature, conditions, descriptions, and key statistics. I'm now focusing on the text content and its visual hierarchy within the card layout for all four locations. **Detailing Location Data** I'm refining the display of specific location details and meteorological data within each card, ensuring temperature, conditions, and descriptive text are clearly presented. I'm also incorporating the CSS location pin and applying enhanced glassmorphic styling to the cards, complete with hover effects and ambient back glows. **Detailing Snowflake Animations** I'm implementing varied animations for each of the four distinct snowflake types. My focus is on subtle scaling, translation, and rotation differences, ensuring each flake's descent appears unique and magical, with custom timings for a dynamic effect. **Ensuring Accessibility** I'm double-checking that all animations respect the `prefers-reduced-motion` setting, ensuring a graceful fallback. I'm also confirming the correct implementation of responsive breakpoints for various screen sizes. **Adapting Layouts Responsively** I'm finalizing the responsive grid system to ensure the four weather cards adapt gracefully across various screen sizes, from desktop to mobile, utilizing media queries and `minmax` for fluid adjustments. **Finalizing Sunny Icon** I'm currently structuring the HTML for the sunny icon, which includes distinct elements for the disc and rotating rays. I'm also defining the CSS for the sun disc's radial gradient and pulse animation, aiming for a bright, energetic feel. **Animating Sun Rays** I'm refining the sun rays' CSS, specifically focusing on precise rotation for each of the six rays to achieve a symmetrical and visually appealing solar corona. My goal is a smooth, continuous rotation that enhances the sunny icon's dynamic feel. **Perfecting Rain Animation** I'm adjusting the rain drop positions and stagger delays to create a more natural falling effect, ensuring each drop's full journey is visible. I'm also refining the cloud's shape and texture with multiple puff elements, enhancing its depth. **Refining Rain Animation** I'm further enhancing the rain animation by precisely adjusting drop positions and stagger delays for a more realistic fall. I'm also refining the cloud's multi-element puff structure to improve its depth and visual texture. **Refining Rain Animation** I'm focusing on the rain animation, fine-tuning drop positions and stagger delays for a more natural, dynamic fall. I'm also enhancing the cloud's multi-element puff structure to improve depth and visual texture. **Perfecting Snowflake Drift** I'm fine-tuning the snowflake animations, implementing varied scales, translations, and rotations for each of the four distinct flake types. My current focus is on ensuring each flake's unique timing and path contributes to a magical, dynamic descent. **Animating Snowflakes Further** I'm enhancing the snowflake animations, adjusting individual scales, translations, and rotations for each of the four distinct types. My focus is on fine-tuning their unique timings and paths to create a more magical, dynamic descent. **Animating Snowflake Variations** I'm currently experimenting with the keyframes for the snowdrift animations, fine-tuning the translation, rotation, and scale for each of the four distinct snowflake types to achieve a more magical and dynamic descent. I'm also starting to integrate the HTML structure for the stormy card, focusing on the layered cloud elements and the lightning bolt. **Finalizing Storm Animations** I'm completing the storm card's visual effects, synchronizing lightning flashes with cloud illuminations and refining angled rain streak animations for maximum impact. I'm also adjusting the storm cloud's CSS, ensuring its layered appearance and flash animation are effectively integrated. **Completing Storm Visuals** I'm finalizing the storm card, synchronizing the lightning strike animation with pulsating cloud illuminations and refining the angled rain streak effects for peak drama. I'm also optimizing the storm cloud's layered structure and flash animation integration. **Animating Sun Rays** **Perfecting Storm Effects** I'm implementing the final touches on the storm card's rain animation, precisely adjusting drop positions and stagger delays for a natural fall. I'm also refining the storm cloud's layered structure and flash animation integration for maximum visual impact. **Styling Card Content** I'm focusing on refining the typography and layout of the content within each weather card. This includes styling the city name with a location pin, country badge, temperature values, and descriptive weather text. I'm also designing the bottom stats grid to display key information clearly. **Validating HTML/CSS Constraints** I'm rigorously verifying that all icons and graphical elements are purely CSS-generated, confirming the absence of any JavaScript, SVGs, or external image assets. I'm also checking the content layout and styling for optimal display on a 1280x800 viewport. **Centering Layout Elements** I'm centering the main content block vertically and horizontally using flexbox within the viewport. This ensures the header and weather cards are perfectly positioned, with ample breathing room, regardless of screen height. **Applying Final Aesthetics** I'm now applying the finalized color gradients, borders, and box shadows to each of the four weather cards, ensuring a polished look. I'm also conducting a final viewport check to confirm optimal layout on 1280x800 screens and ensure clean vertical stacking on mobile. **Reviewing Project Completion** I'm confirming all project requirements are met: four distinct CSS-only animated weather cards with appropriate visuals, responsive layouts, hover effects, and animations. I've also verified the absence of JavaScript, SVGs, or external images, and ensured accessibility and performance standards are satisfied across various viewports.