수면 계산�?AI | 최고�?수면 시간 �?기상 도구 | 무료 온라�?계산�?/title> <meta name="title" content="수면 계산�?AI | 최고�?수면 시간 �?기상 도구 | 무료 온라�?계산�?> <meta name="description" content="AI 기반 무료 수면 계산기로 완벽�?취침 시간�?기상 시간�?찾아보세�? 수면 주기�?최적화하�?수면 품질�?향상시키�?상쾌하게 일어나세�? 수면 과학�?90�?수면 주기�?기반합니�?"> <meta name="keywords" content="수면 계산�? 취침 시간 계산�? 수면 주기 계산�? 기상 시간 계산�? 수면 최적�? 수면 과학, 일주�?리듬, �?수면, 깊은 수면, 수면 품질, 수면 위생, 불면�?도움, 수면 일정, 수면 건강, �?나은 수면 �?> <meta name="author" content="Sleep Calculator AI"> <meta name="robots" content="index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1">  <meta property="og:type" content="website"> <meta property="og:url" content="https://sleepcalculatorai.com/ko/"> <meta property="og:title" content="수면 계산�?AI | 최고�?수면 시간 �?기상 도구 | 무료 온라�?계산�?> <meta property="og:description" content="AI 기반 무료 수면 계산기로 완벽�?취침 시간�?기상 시간�?찾아보세�? 수면 주기�?최적화하�?수면 품질�?향상시키�?상쾌하게 일어나세�? 수면 과학�?90�?수면 주기�?기반합니�?"> <meta property="og:image" content="https://sleepcalculatorai.com/Sleep%20Calculator%20AI%20Social%20Media%20Profile.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="630"> <meta property="og:site_name" content="Sleep Calculator AI"> <meta property="og:locale" content="ko_KR">  <meta name="twitter:card" content="summary_large_image"> <meta name="twitter:url" content="https://sleepcalculatorai.com/ko/"> <meta name="twitter:title" content="수면 계산�?AI | 최고�?수면 시간 �?기상 도구 | 무료 온라�?계산�?> <meta name="twitter:description" content="AI 기반 무료 수면 계산기로 완벽�?취침 시간�?기상 시간�?찾아보세�? 수면 주기�?최적화하�?상쾌하게 일어나세�?"> <meta name="twitter:image" content="https://sleepcalculatorai.com/Sleep%20Calculator%20AI%20Social%20Media%20Profile.png">  <link rel="canonical" href="https://sleepcalculatorai.com/ko/" /> <link rel="alternate" hreflang="x-default" href="https://sleepcalculatorai.com/" /> <link rel="alternate" hreflang="en" href="https://sleepcalculatorai.com/" /> <link rel="alternate" hreflang="zh" href="https://sleepcalculatorai.com/zh/" /> <link rel="alternate" hreflang="es" href="https://sleepcalculatorai.com/es/" /> <link rel="alternate" hreflang="fr" href="https://sleepcalculatorai.com/fr/" /> <link rel="alternate" hreflang="de" href="https://sleepcalculatorai.com/de/" /> <link rel="alternate" hreflang="it" href="https://sleepcalculatorai.com/it/" /> <link rel="alternate" hreflang="pt" href="https://sleepcalculatorai.com/pt/" /> <link rel="alternate" hreflang="ru" href="https://sleepcalculatorai.com/ru/" /> <link rel="alternate" hreflang="ja" href="https://sleepcalculatorai.com/ja/" /> <link rel="alternate" hreflang="ko" href="https://sleepcalculatorai.com/ko/" /> <link rel="alternate" hreflang="ar" href="https://sleepcalculatorai.com/ar/" /> <link rel="alternate" hreflang="hi" href="https://sleepcalculatorai.com/hi/" /> <link rel="alternate" hreflang="bn" href="https://sleepcalculatorai.com/bn/" /> <link rel="alternate" hreflang="th" href="https://sleepcalculatorai.com/th/" /> <link rel="alternate" hreflang="vi" href="https://sleepcalculatorai.com/vi/" /> <link rel="alternate" hreflang="id" href="https://sleepcalculatorai.com/id/" /> <link rel="alternate" hreflang="tr" href="https://sleepcalculatorai.com/tr/" /> <link rel="alternate" hreflang="pl" href="https://sleepcalculatorai.com/pl/" /> <link rel="alternate" hreflang="uk" href="https://sleepcalculatorai.com/uk/" /> <link rel="alternate" hreflang="nl" href="https://sleepcalculatorai.com/nl/" />  <link rel="icon" type="image/x-icon" href="/favicon.ico"> <link rel="apple-touch-icon" sizes="180x180" href="/Sleep%20Calculator%20AI%20App%20Icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/favicon.ico"> <link rel="icon" type="image/png" sizes="16x16" href="/favicon.ico">  <link rel="preconnect" href="https://www.google-analytics.com"> <link rel="preconnect" href="https://pagead2.googlesyndication.com"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>  <link rel="preload" href="/Sleep%20Calculator%20AI%20Logo%202.png" as="image" fetchpriority="high">  <link rel="dns-prefetch" href="//www.googletagmanager.com"> <link rel="dns-prefetch" href="//pagead2.googlesyndication.com">  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "WebApplication", "name": "수면 계산�?AI", "description": "AI 기반 무료 수면 계산기로 완벽�?취침 시간�?기상 시간�?찾아보세�? 수면 주기�?최적화하�?수면 품질�?향상시키�?상쾌하게 일어나세�?", "url": "https://sleepcalculatorai.com/ko/", "applicationCategory": "HealthApplication", "operatingSystem": "Web Browser", "offers": { "@type": "Offer", "price": "0", "priceCurrency": "KRW" }, "author": { "@type": "Organization", "name": "Sleep Calculator AI" }, "publisher": { "@type": "Organization", "name": "Sleep Calculator AI", "logo": { "@type": "ImageObject", "url": "https://sleepcalculatorai.com/Sleep%20Calculator%20AI%20Logo%202.png" } }, "aggregateRating": { "@type": "AggregateRating", "ratingValue": "4.8", "ratingCount": "1250", "bestRating": "5", "worstRating": "1" }, "featureList": [ "수면 주기 최적�?, "취침 시간 계산�?, "기상 시간 계산�?, "수면 과학 교육", "개인화된 수면 권장사항", "수면 �?�?조언" ] } </script>  <script type="application/ld+json"> { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "수면 계산기는 어떻�?작동하나�?", "acceptedAnswer": { "@type": "Answer", "text": "우리�?수면 계산기는 수면 과학 원리�?사용하여 90�?수면 주기�?기반으로 최적�?수면 시간�?계산합니�? 잠들기까지 걸리�?시간�?고려하고 완전�?수면 주기�?위한 여러 옵션�?권장합니�?" } }, { "@type": "Question", "name": "수면 주기란 무엇인가�?", "acceptedAnswer": { "@type": "Answer", "text": "수면 주기�?90분간�?기간으로, 다양�?수면 단계�?포함합니�? 얕은 수면, 깊은 수면, �?수면. 완전�?주기�?완료하면 상쾌하고 활력 넘치�?일어�?�?있습니다." } }, { "@type": "Question", "name": "�?수면 계산기는 무료인가�?", "acceptedAnswer": { "@type": "Answer", "text": "�? 우리�?수면 계산기는 완전�?무료�?사용�?�?있습니다. 등록이나 결제가 전혀 필요하지 않습니다." } } ] } </script> <style> * { margin: 0; padding: 0; box-sizing: border-box; } /* Accessibility - Skip link */ .skip-link { position: absolute; top: -40px; left: 6px; background: #000; color: #fff; padding: 8px; text-decoration: none; border-radius: 4px; z-index: 9999; } .skip-link:focus { top: 6px; } /* Accessibility - Screen reader only content */ .visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; } /* High contrast focus styles */ *:focus { outline: 3px solid #ffd700; outline-offset: 2px; } button:focus, select:focus, a:focus { outline: 3px solid #ffd700; outline-offset: 2px; } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #090f31; color: #ddd7b3; line-height: 1.6; } .container { max-width: 1200px; margin: 0 auto; padding: 20px; } .header { text-align: center; margin-bottom: 40px; position: relative; } .logo { width: 180px; border-radius: 12px; margin: 20px auto; display: block; } .language-selector { position: absolute; top: 20px; right: 20px; z-index: 1000; } .language-selector select { padding: 8px 12px; background: #26284f; color: #ddd7b3; border: 1px solid #5e637a; border-radius: 6px; font-size: 14px; cursor: pointer; } .language-selector select:focus { outline: none; border-color: #8c7c6c; } h1 { font-size: 2.5rem; margin-bottom: 10px; color: #ddd7b3; } h2 { font-size: 2rem; margin-bottom: 20px; color: #ddd7b3; } h3 { font-size: 1.5rem; margin-bottom: 15px; color: #ddd7b3; } .card { background: #26284f; border: 1px solid #5e637a; border-radius: 12px; padding: 30px; margin-bottom: 30px; } .calculator-section { max-width: 800px; margin: 0 auto 40px; } .mode-buttons { display: flex; justify-content: center; gap: 10px; margin-bottom: 30px; } .mode-btn { padding: 12px 24px; background: #090f31; color: #8c7c6c; border: 1px solid #5e637a; border-radius: 8px; cursor: pointer; transition: all 0.3s; } .mode-btn.active { background: #5e637a; color: #ddd7b3; } .time-picker { display: flex; justify-content: center; align-items: center; gap: 10px; margin-bottom: 30px; } .time-picker select { padding: 10px; background: #090f31; color: #ddd7b3; border: 1px solid #5e637a; border-radius: 6px; } .results { background: #090f31; border: 1px solid #5e637a; border-radius: 8px; padding: 20px; margin-top: 20px; } .result-item { display: flex; justify-content: space-between; align-items: center; padding: 15px; background: #26284f; border: 1px solid #5e637a; border-radius: 8px; margin-bottom: 10px; } .save-btn { padding: 8px 16px; background: #5e637a; color: #ddd7b3; border: none; border-radius: 6px; cursor: pointer; transition: background 0.3s; } .save-btn:hover { background: #8c7c6c; } .features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 40px; } .feature-card { background: #090f31; border: 1px solid #5e637a; border-radius: 8px; padding: 20px; text-align: center; } .testimonials { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-bottom: 40px; } .testimonial { background: #090f31; border: 1px solid #5e637a; border-radius: 8px; padding: 20px; } .stars { color: #ffd700; font-size: 1.2rem; margin-bottom: 10px; } .faq-item { background: #090f31; border: 1px solid #5e637a; border-radius: 8px; padding: 20px; margin-bottom: 15px; } .faq-question { font-weight: bold; margin-bottom: 10px; color: #ddd7b3; } .faq-answer { color: #8c7c6c; } .tips-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; margin-bottom: 40px; } .tip-card { background: #090f31; border: 1px solid #5e637a; border-radius: 8px; padding: 20px; } .tip-icon { font-size: 2rem; margin-bottom: 10px; } .footer { text-align: center; padding: 40px 0; color: #8c7c6c; } .footer a { color: #8c7c6c; text-decoration: underline; margin: 0 10px; } @media (max-width: 768px) { .container { padding: 10px; } h1 { font-size: 2rem; } .mode-buttons { flex-direction: column; } .time-picker { flex-wrap: wrap; } } </style> </head> <body> <div class="container">  <a href="#main-content" class="skip-link">메인 콘텐츠로 건너뛰기</a>  <header class="header" role="banner"> <div class="language-selector"> <label for="language-select" class="visually-hidden">언어 선택</label> <select id="language-select" onchange="changeLanguage(this.value)" aria-label="웹사이트 언어 선택"> <option value="/">English</option> <option value="/zh/">Chinese</option> <option value="/es/">Spanish</option> <option value="/fr/">French</option> <option value="/de/">German</option> <option value="/it/">Italian</option> <option value="/pt/">Portuguese</option> <option value="/ru/">Russian</option> <option value="/ja/">Japanese</option> <option value="/ko/" selected>Korean</option> <option value="/ar/">Arabic</option> <option value="/hi/">Hindi</option> <option value="/bn/">Bengali</option> <option value="/th/">Thai</option> <option value="/vi/">Vietnamese</option> <option value="/id/">Indonesian</option> <option value="/tr/">Turkish</option> <option value="/pl/">Polish</option> <option value="/uk/">Ukrainian</option> <option value="/nl/">Dutch</option> </select> </div> <img src="/Sleep%20Calculator%20AI%20Logo%202.png" alt="수면 계산�?AI 로고 - 수면 관�?이미지가 포함�?원형 로고" class="logo" loading="eager" fetchpriority="high" width="180" height="180"> <h1>수면 계산�?AI</h1> <p style="font-size: 1.2rem; color: #8c7c6c; margin-bottom: 30px;"> 상쾌하고 활력 넘치�?일어�?�?있는 완벽�?취침 시간이나 기상 시간�?찾아보세�? </p> </header>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">�?우리�?수면 계산기를 사용해야 할까�?</h2> <div class="features-grid"> <div class="feature-card"> <div class="tip-icon">*</div> <h3>과학 기반</h3> <p style="color: #8c7c6c;">수면 주기 연구와 일주�?리듬 과학�?기반합니�?/p> </div> <div class="feature-card"> <div class="tip-icon">*</div> <div class="feature-card"> <div class="tip-icon">*</div> <h3>개인�?/h3> <p style="color: #8c7c6c;">나이와 수면 패턴�?맞는 설정�?맞춤 조정</p> </header> </div> </div>  <main id="main-content" class="calculator-section" role="main"> <div class="card"> <fieldset class="mode-buttons" role="radiogroup" aria-labelledby="calculator-mode-legend"> <legend id="calculator-mode-legend" class="visually-hidden">계산 모드 선택</legend> <button class="mode-btn active" onclick="setMode('wakeup')" role="radio" aria-checked="true" aria-describedby="wakeup-desc">원하�?시간�?일어나기</button> <button class="mode-btn" onclick="setMode('sleep-now')" role="radio" aria-checked="false" aria-describedby="sleep-now-desc">지�?잠들�?/button> </fieldset> <div id="wakeup-desc" class="visually-hidden">원하�?기상 시간�?기반으로 최적�?취침 시간�?계산</div> <div id="sleep-now-desc" class="visually-hidden">지�?잠든다면 최적�?기상 시간�?계산</div> <div id="time-picker" class="time-picker" role="group" aria-labelledby="time-picker-label"> <div id="time-picker-label" class="visually-hidden">기상 시간 설정</div> <label for="hour">�?</label> <select id="hour" aria-label="시간 선택"></select> <label for="minute">�?</label> <select id="minute" aria-label="�?선택"></select> <label for="period" class="visually-hidden">오전 또는 오후</label> <select id="period" aria-label="오전 또는 오후 선택"> <option value="AM">오전</option> <option value="PM">오후</option> </select> </div> <div class="time-picker" role="group" aria-labelledby="fall-asleep-label"> <label id="fall-asleep-label" for="fall-asleep-time">잠들기까지 걸리�?시간:</label> <select id="fall-asleep-time" aria-describedby="fall-asleep-help"> <option value="5">5�?/option> <option value="10">10�?/option> <option value="15" selected>15�?/option> <option value="20">20�?/option> <option value="30">30�?/option> </select> <div id="fall-asleep-help" class="visually-hidden">침대�?누운 �?잠들기까지�?평균 시간</div> </div> <button class="save-btn" onclick="calculateSleep()" style="display: block; margin: 20px auto; padding: 12px 24px; font-size: 1.1rem;" aria-describedby="calculate-help"> 수면 시간 계산하기 </button> <div id="calculate-help" class="visually-hidden">선호도에 따른 최적�?수면 시간�?계산하려�?클릭하세�?/div> <div id="results" class="results" style="display: none;" role="region" aria-labelledby="results-title" aria-live="polite"> <h3 id="results-title" style="text-align: center; margin-bottom: 20px;"></h3> <div id="results-list" role="list"></div> </div> </div> </main>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">사용�?후기</h2> <div class="testimonials"> <div class="testimonial"> <div class="stars">5/5</div> <div class="testimonial"> <div class="stars">5/5</div> <div class="testimonial"> <div class="stars">5/5</div> </div> </div>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">수면 개선 �?/h2> <div class="tips-grid"> <div class="tip-card"> <div class="tip-icon">*</div> <h3>일정�?수면 스케�?유지</h3> <p style="color: #8c7c6c;">매일 같은 시간�?자고 일어나세�?주말�?마찬가지). 이는 몸의 내부 시계�?조절하는 �?도움�?됩니�?</p> </header> <div class="tip-card"> <div class="tip-icon">*</div> <h3>환경 최적�?/h3> <p style="color: #8c7c6c;">침실�?시원하게(18-20°C), 어둡�?조용하게 유지하세�? 필요�?암막 커튼�?귀마개�?사용하세�?</p> </div> <div class="tip-card"> <div class="tip-icon">*</div> <div class="tip-card"> <div class="tip-icon">*</div> <h3>스크�?시간 제한</h3> <p style="color: #8c7c6c;">화면�?블루라이트는 멜라토닌�?억제�?�?있습니다. 잠자리에 들기 1-2시간 전에�?휴대폰과 컴퓨터를 피하세요.</p> </div> <div class="tip-card"> <div class="tip-icon">*</div> <div class="tip-card"> <div class="tip-icon">*</div> <h3>이완 기법 연습</h3> <p style="color: #8c7c6c;">잠자리에 들기 �?심호�? 명상 또는 가벼운 스트레칭으로 마음�?몸을 진정시켜 보세�?</p> </div> </div> </div>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">수면�?과학</h2> <div class="tips-grid"> <div class="tip-card"> <h3>수면 주기</h3> <p style="color: #8c7c6c;">�?수면 주기�?�?90분간 지속되�?얕은 �? 깊은 �? �?수면�?포함합니�? 완전�?주기�?마치�?상쾌하게 일어�?�?있습니다.</p> </div> <div class="tip-card"> <h3>일주�?리듬</h3> <p style="color: #8c7c6c;">체내 24시간 시계가 수면-각성 주기�?조절합니�? �?노출, 식사 시간, 일상 습관�?영향�?받습니다.</p> </div> <div class="tip-card"> <h3>수면 단계</h3> <p style="color: #8c7c6c;">1-2단계: 얕은 �? 3단계: 깊은 �?회복), �? 꿈과 기억 정리.</p> </div> <div class="tip-card"> <h3>수면 부�?/h3> <p style="color: #8c7c6c;">충분�?수면�?취하지 못하�?것의 누적 효과입니�? 만성적인 수면 부채는 기분, 기억�? 신체 건강�?영향�?미칩니다.</p> </div> </div> </div>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">⚠️ 중요�?의학�?면책조항</h2> <div style="background: rgba(255, 200, 100, 0.1); border: 2px solid rgba(255, 200, 100, 0.3); border-radius: 15px; padding: 25px; margin-bottom: 30px;"> <p style="color: #ddd7b3; font-size: 1.1rem; margin-bottom: 15px; font-weight: 600;">�?수면 계산기는 교육 �?정보 제공만을 목적으로 합니�?</p> <ul style="color: #8c7c6c; margin-left: 20px; line-height: 1.7;"> <li>�?도구�?<strong>전문적인 의학�?조언, 진단 또는 치료�?대체하�?것이 아닙니다</strong>.</li> <li>수면, 건강 또는 의학�?상태�?대�?결정�?내리�?전에 항상 자격�?갖춘 의료진과 상담하시�?바랍니다.</li> <li>지속적�?수면 문제, 수면 장애 또는 건강상의 우려가 있으시면 전문적인 의학�?평가�?받으시기 바랍니다.</li> <li>개인�?수면 요구량은 크게 다를 �?있습니다 - 저희의 권장사항은 평균적인 수면 과학 연구�?바탕으로 �?일반적인 가이드라인입니�?</li> <li>�?계산기는 수면 장애�?진단하거�?의학�?수면 연구�?대체하�?용도�?사용되어서는 �?됩니�?</li> </ul> <p style="color: #ddd7b3; font-size: 1rem; margin-top: 15px; font-style: italic;">지속적�?수면 어려움, 과도�?�?졸림 또는 수면 장애 증상�?경험하고 계시다면 의료 전문가�?수면 전문의와 상담하시�?바랍니다.</p> </div> </div>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">자주 묻는 질문</h2> <div class="faq-item"> <div class="faq-question">수면 계산기는 어떻�?작동하나�?</div> <div class="faq-answer">우리�?수면 계산기는 수면 과학�?사용하여 최적�?수면 시간�?결정합니�? 원하�?기상 시간�?기반으로 취침 시간�?계산하며, 90�?수면 주기와 개인�?잠들�?시간�?고려합니�?</div> </div> <div class="faq-item"> <div class="faq-question">수면 주기란 무엇인가�?</div> <div class="faq-answer">수면 주기�?90분간�?기간으로, 다양�?수면 단계�?포함합니�? 얕은 수면, 깊은 수면, �?수면. 완전�?주기�?완료하면 상쾌하게 일어�?�?있습니다.</div> </div> <div class="faq-item"> <div class="faq-question">�?개의 수면 주기가 필요한가�?</div> <div class="faq-answer">대부분의 성인은 밤에 4-6개의 완전�?수면 주기(6-9시간)가 필요합니�? 정확�?수는 나이, 생활 방식, 개인�?필요�?따라 다릅니다.</div> </div> <div class="faq-item"> <div class="faq-question">�?수면 계산기는 무료인가�?</div> <div class="faq-answer">�? 우리�?수면 계산기는 완전�?무료�?사용�?�?있습니다. 등록이나 결제가 전혀 필요하지 않습니다.</div> </div> </div>  <div class="card"> <h2 style="text-align: center; margin-bottom: 30px;">수면 건강 블로�?/h2> <p style="text-align: center; color: #8c7c6c; margin-bottom: 40px;">전문가�?통찰�? 과학�?연구, �?나은 수면�?건강 개선�?위한 실용적인 팁을 알아보세�?</p> <div class="features-grid"> <div class="feature-card"> <div class="tip-icon">*</div> <h3>수면 주기 이해하기</h3> <p style="color: #8c7c6c;">90�?법칙�?자연적인 주기�?맞춰 수면 타이밍�?조정하여 상쾌함을 개선하는 방법�?배우세요.</p> <div style="margin-top: 15px;"> <a href="/blog/understanding-sleep-cycles.html" style="color: #ddd7b3; text-decoration: none; font-weight: 600;">�?읽어보기</a> </div> </div> <div class="feature-card"> <div class="tip-icon">*</div> <h3>과학 기반 수면 �?/h3> <p style="color: #8c7c6c;">당신�?밤을 변화시�?실제�?효과가 있는 10가지 과학�?근거 기반 수면 위생 습관�?알아보세�?</p> <div style="margin-top: 15px;"> <a href="/blog/sleep-hygiene-habits.html" style="color: #ddd7b3; text-decoration: none; font-weight: 600;">�?읽어보기</a> </div> </div> <div class="feature-card"> <div class="tip-icon">*</div> <h3>불면�?악순�?끊기</h3> <p style="color: #8c7c6c;">검증된 전략�?기법으로 불면증을 이해하고 극복하는 종합 가이드입니�?</p> <div style="margin-top: 15px;"> <a href="/blog/breaking-insomnia-cycle.html" style="color: #ddd7b3; text-decoration: none; font-weight: 600;">�?읽어보기</a> </div> </div> </div> <div style="text-align: center; margin-top: 30px;"> <a href="/blog.html" style="color: #ddd7b3; text-decoration: none; font-weight: 600; font-size: 1.1rem;">모든 블로�?글 보기 </a> </div> </div>  <footer class="footer" role="contentinfo"> <p>💤 달콤�?꿈과 �?나은 수면 습관�?</p> <p style="margin-top: 10px;"><strong>수면 계산�?AI</strong> - �?나은 수면�?건강 개선�?위한 신뢰�?�?있는 동반�?</p> <nav aria-label="푸터 내비게이�? style="margin-top: 20px;"> <a href="/about.html">회사 소개</a> | <a href="/blog.html">블로</a> | <a href="/contact.html">문의하기</a> | <a href="/medical-disclaimer.html">의학�?면책조항</a> | <a href="/privacy-policy.html">개인정보 보호정책</a> | <a href="/terms-of-service.html">이용약관</a> </nav> <p style="margin-top: 10px;">© 2025 수면 계산�?AI. 모든 권리 보유.</p> </footer> </div>  <script> let currentMode = 'wakeup'; // Initialize time picker function initializeTimePicker() { const hourSelect = document.getElementById('hour'); const minuteSelect = document.getElementById('minute'); // Add hours for (let i = 1; i <= 12; i++) { const option = document.createElement('option'); option.value = i; option.textContent = i; hourSelect.appendChild(option); } // Add minutes for (let i = 0; i < 60; i += 5) { const option = document.createElement('option'); option.value = i; option.textContent = i.toString().padStart(2, '0'); minuteSelect.appendChild(option); } // Set default values hourSelect.value = 7; minuteSelect.value = 0; } function setMode(mode) { currentMode = mode; // Update button styles and ARIA attributes document.querySelectorAll('.mode-btn').forEach(btn => { btn.classList.remove('active'); btn.setAttribute('aria-checked', 'false'); }); event.target.classList.add('active'); event.target.setAttribute('aria-checked', 'true'); // Show/hide time picker const timePicker = document.getElementById('time-picker'); if (mode === 'wakeup') { timePicker.style.display = 'flex'; timePicker.setAttribute('aria-hidden', 'false'); } else { timePicker.style.display = 'none'; timePicker.setAttribute('aria-hidden', 'true'); } // Update button text const calculateBtn = document.querySelector('.save-btn'); calculateBtn.textContent = mode === 'wakeup' ? '취침 시간 계산하기' : '기상 시간 계산하기'; // Announce mode change to screen readers const announcement = mode === 'wakeup' ? '기상 시간 모드�?전환되었습니�? 원하�?기상 시간�?설정하세�?' : '지�?잠들�?모드�?전환되었습니�? 지�?잠든다면 기상 시간�?계산합니�?'; announceToScreenReader(announcement); } // Function to announce messages to screen readers function announceToScreenReader(message) { const announcement = document.createElement('div'); announcement.setAttribute('aria-live', 'assertive'); announcement.setAttribute('aria-atomic', 'true'); announcement.className = 'visually-hidden'; announcement.textContent = message; document.body.appendChild(announcement); // Remove after announcement setTimeout(() => { if (document.body.contains(announcement)) { document.body.removeChild(announcement); } }, 1000); } function calculateSleep() { const fallAsleepTime = parseInt(document.getElementById('fall-asleep-time').value); const resultsDiv = document.getElementById('results'); const resultsTitle = document.getElementById('results-title'); const resultsList = document.getElementById('results-list'); resultsList.innerHTML = ''; if (currentMode === 'wakeup') { const hour = parseInt(document.getElementById('hour').value); const minute = parseInt(document.getElementById('minute').value); const period = document.getElementById('period').value; // Convert to 24-hour format let hour24 = hour; if (period === 'PM' && hour !== 12) hour24 += 12; if (period === 'AM' && hour === 12) hour24 = 0; const wakeTime = new Date(); wakeTime.setHours(hour24, minute, 0, 0); resultsTitle.textContent = `${formatTime(wakeTime)} 기상�?위한 취침 시간 권장`; // Calculate bedtimes for different cycles [6, 5, 4].forEach(cycles => { const bedtime = new Date(wakeTime.getTime() - (cycles * 90 + fallAsleepTime) * 60000); const totalHours = Math.floor((cycles * 90 + fallAsleepTime) / 60); const totalMinutes = (cycles * 90 + fallAsleepTime) % 60; const resultItem = document.createElement('div'); resultItem.className = 'result-item'; resultItem.setAttribute('role', 'listitem'); resultItem.innerHTML = ` <div> <div style="font-size: 1.2rem; font-weight: bold; color: #ddd7b3;" role="text">${formatTime(bedtime)}</div> <div style="color: #8c7c6c; font-size: 0.9rem;" role="text">${cycles}�?수면 주기 (${totalHours}시간 ${totalMinutes}�?</div> </div> <button class="save-btn" onclick="saveCalculation('${formatTime(bedtime)}', ${cycles})" aria-label="${formatTime(bedtime)} 취침 시간 (${cycles}�?수면 주기) 저�?>저�?/button> `; resultsList.appendChild(resultItem); }); } else { const now = new Date(); resultsTitle.textContent = '지�?잠든다면...'; // Calculate wake-up times for different cycles [6, 5, 4].forEach(cycles => { const wakeTime = new Date(now.getTime() + (cycles * 90 + fallAsleepTime) * 60000); const totalHours = Math.floor((cycles * 90 + fallAsleepTime) / 60); const totalMinutes = (cycles * 90 + fallAsleepTime) % 60; const resultItem = document.createElement('div'); resultItem.className = 'result-item'; resultItem.setAttribute('role', 'listitem'); resultItem.innerHTML = ` <div> <div style="font-size: 1.2rem; font-weight: bold; color: #ddd7b3;" role="text">${formatTime(wakeTime)}</div> <div style="color: #8c7c6c; font-size: 0.9rem;" role="text">${cycles}�?수면 주기 (${totalHours}시간 ${totalMinutes}�?</div> </div> <button class="save-btn" onclick="saveCalculation('${formatTime(wakeTime)}', ${cycles})" aria-label="${formatTime(wakeTime)} 기상 시간 (${cycles}�?수면 주기) 저�?>저�?/button> `; resultsList.appendChild(resultItem); }); } resultsDiv.style.display = 'block'; // Announce results to screen readers const resultCount = resultsList.children.length; const modeText = currentMode === 'wakeup' ? '취침 시간 권장사항' : '기상 시간 권장사항'; announceToScreenReader(`${resultCount}개의 ${modeText}�?계산되어 표시되었습니다`); } function formatTime(date) { return date.toLocaleTimeString('ko-KR', { hour: 'numeric', minute: '2-digit', hour12: true }); } function saveCalculation(time, cycles) { // Optimized notification without blocking alert const notification = document.createElement('div'); notification.style.cssText = ` position: fixed; top: 20px; right: 20px; z-index: 10000; background: #26284f; color: #ddd7b3; padding: 15px 20px; border-radius: 8px; border: 1px solid #5e637a; animation: fadeInOut 3s forwards; `; notification.textContent = `저장됨: ${time} (${cycles}�?주기)`; // Add fade animation if (!document.querySelector('#notification-styles')) { const styles = document.createElement('style'); styles.id = 'notification-styles'; styles.textContent = ` @keyframes fadeInOut { 0% { opacity: 0; transform: translateX(100%); } 20%, 80% { opacity: 1; transform: translateX(0); } 100% { opacity: 0; transform: translateX(100%); } } `; document.head.appendChild(styles); } document.body.appendChild(notification); setTimeout(() => { if (document.body.contains(notification)) { document.body.removeChild(notification); } }, 3000); } // Language change function function changeLanguage(languagePath) { if (languagePath && languagePath !== window.location.pathname) { window.location.href = languagePath; } } // Initialize when DOM is ready - optimized if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', initializeTimePicker); } else { initializeTimePicker(); } // Performance optimization: Lazy load images with Intersection Observer if ('IntersectionObserver' in window) { const imageObserver = new IntersectionObserver((entries, observer) => { entries.forEach(entry => { if (entry.isIntersecting) { const img = entry.target; if (img.dataset.src) { img.src = img.dataset.src; img.removeAttribute('data-src'); } observer.unobserve(img); } }); }); // Apply to any future lazy-loaded images document.querySelectorAll('img[data-src]').forEach(img => { imageObserver.observe(img); }); } // Performance monitoring if ('performance' in window && 'getEntriesByType' in performance) { window.addEventListener('load', function() { // Measure and report performance metrics setTimeout(function() { const navigation = performance.getEntriesByType('navigation')[0]; const paint = performance.getEntriesByType('paint'); if (navigation) { const pageLoadTime = navigation.loadEventEnd - navigation.loadEventStart; const domContentLoadedTime = navigation.domContentLoadedEventEnd - navigation.domContentLoadedEventStart; // Only log in development or send to analytics in production console.log('Page Performance:', { pageLoadTime: Math.round(pageLoadTime), domContentLoadedTime: Math.round(domContentLoadedTime), firstPaint: paint.find(p => p.name === 'first-paint')?.startTime, firstContentfulPaint: paint.find(p => p.name === 'first-contentful-paint')?.startTime }); } }, 1000); }); } </script> </body> </html>