init

src/pages/main.tsx

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+import React, { useState, useCallback } from 'react';
+
+import logo from '../assets/logo-white.svg';
+import arrow from '../assets/36-arrow-right.svg';
+
+import {
+    MainWrapper,
+    InputElement,
+    InputLabel,
+    InputWrapper,
+    LogoImg,
+    ArrowImg,
+    IconButton,
+    StartWrapper,
+    StartI,
+    StartInput,
+    StartLabel,
+} from './style';
+
+const Input = ({ onStart }) => {
+    const [value, setValue] = useState('');
+    const handleChange = useCallback(event => {
+        setValue(event.target.value.toUpperCase())
+    }, [setValue]);
+
+    const handleSubmit = useCallback((event) => {
+        event.preventDefault();
+        if (value === 'SBER') {
+            onStart()
+        }
+    }, [value])
+
+    return (
+        <form onSubmit={handleSubmit}>
+            <InputWrapper>
+                <InputLabel
+                    htmlFor='input'
+                >
+                    Ввод:
+                </InputLabel>
+                <InputElement
+                    value={value}
+                    onChange={handleChange}
+                    id="input"
+                    autoComplete="off"
+                />
+                <IconButton type="submit">
+                    <ArrowImg src={arrow} />
+                </IconButton>
+            </InputWrapper>
+        </form>
+    )
+}
+
+const Start = () => {
+    return (
+        <StartWrapper>
+            <StartInput
+                id="check"
+                type="checkbox"
+            />
+            <StartLabel
+                htmlFor='check'
+            >
+                <StartI>СТАРТ</StartI>
+            </StartLabel>
+        </StartWrapper>
+    )
+}
+
+export const MainPage = () => {
+    const [showStart, setShowStart] = useState(false);
+
+    return (
+        <MainWrapper>
+            <LogoImg src={logo} />
+            {!showStart && <Input onStart={() => setShowStart(true)} />}
+            {showStart && <Start />}
+        </MainWrapper>
+    );
+};

src/pages/style.ts

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+import styled from '@emotion/styled';
+import { keyframes } from '@emotion/react'
+
+export const MainWrapper = styled.main`
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    height: 100%;
+`;
+
+export const InputWrapper = styled.div`
+    position: relative;
+    padding: 12px;
+    display: flex;
+    align-items: center;
+`;
+export const InputLabel = styled.label`
+    position: absolute;
+    top: -8px;
+    left: 24px;
+    z-index: 2;
+`;
+export const InputElement = styled.input`
+    border: 1px solid #ccc;
+    padding: 12px;
+    font-size: 24px;
+    border-radius: 8px;
+    color: #117623;
+`;
+
+export const LogoImg = styled.img`
+    position: absolute;
+    top: 24px;
+    left: 24px;
+`;
+
+export const ArrowImg = styled.img`
+    width: 48px;
+    height: 48px;
+`;
+
+export const IconButton = styled.button`
+    border: none;
+    background-color: transparent;
+    display: flex;
+    align-items: center;
+    height: 100%;
+`;
+
+const reveal = keyframes`
+    0% {
+        transform: scale(0.1, 0.1)
+    }
+
+    100% {
+        transform: scale(1);
+    }
+`;
+
+export const StartWrapper = styled.div`
+    animation: ${reveal} 1s ease forwards;
+    /* box-shadow: 0 -2px 5px rgba(255,255,255,0.05), 0 2px 5px rgba(255,255,255,0.1); */
+    width: 350px;
+    height: 350px;
+    /* margin: 60px auto; */
+    position: relative;
+`;
+
+export const StartLabel = styled.label`
+    display: block;
+    width: 100%;
+    height: 100%;
+    border-radius: 50%;
+    background: #b25244;
+    /* background: linear-gradient(#f7f2f6, #b2ac9e); */
+    background: linear-gradient(#b52a2a, #e10ff1);
+    position: relative;
+    color: #a5a39d;
+    font-size: 70px;
+    text-align: center;
+    line-height: 150px;
+    transition: all 0.3s ease-out;
+    text-shadow: 0 2px 1px rgba(0,0,0,0.25);
+    z-index: -1;
+    box-shadow:
+        inset 0 2px 3px rgba(255,255,255,0.13),
+        0 5px 8px rgba(0,0,0,0.3),
+        0 10px 10px 4px rgba(0,0,0,0.3);
+
+    &::after {
+        content: ""; 
+        position: absolute;
+        left: -20px;
+        right: -20px;
+        top: -20px;
+        bottom: -20px;
+        z-index: -2;
+        border-radius: inherit;
+        box-shadow:
+            inset 0 1px 0 rgba(255,255,255,0.1),
+            0 1px 2px rgba(0,0,0,0.3),
+            0 0 10px rgba(0,0,0,0.15);
+    }
+
+    &::before {
+        content: ""; 
+        position: absolute;
+        left: -10px;
+        right: -10px;
+        top: -10px;
+        bottom: -10px;
+        z-index: -1;
+        border-radius: inherit;
+        box-shadow: inset 0 10px 10px rgba(0,0,0,0.13); 
+        -webkit-filter:blur(1px);
+        filter: blur(1px);
+    }
+`;
+
+export const StartInput = styled.input`
+    display: block;
+    width: 100%;
+    height: 100%;
+    opacity: 0;
+    z-index: 100;
+    position: absolute;
+    cursor: pointer;
+
+    &:checked ~ label {
+        box-shadow:
+            inset 0 2px 3px rgba(255,255,255,0.13),
+            0 5px 8px rgba(0,0,0,0.35),
+            0 3px 10px 4px rgba(0,0,0,0.2);
+        color: #9abb82;
+    }
+`;
+
+export const StartI = styled.i`
+    content: "";
+    display: flex;
+    position: absolute;
+    width: 70%;
+    height: 70%;
+    left: 50%;
+    top: 50%;
+    z-index: -1;
+    color: white;
+    margin: -35% 0 0 -35%;
+    border-radius: 50%;
+    /* background: linear-gradient(#cbc7bc, #d2cbc3); */
+    background: linear-gradient(#22a037, #98e221);
+    box-shadow:
+        0 -2px 5px rgba(255,255,255,0.05),
+        0 2px 5px rgba(255,255,255,0.1);
+    -webkit-filter:blur(1px);
+    filter: blur(1px); 
+    align-items: center;
+    justify-content: center;
+    font-style: normal;
+`;