*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:62.5%}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;line-height:1.6;color:#00246B;background:linear-gradient(135deg,#CADCFC 0%,rgba(202,220,252,0.3) 100%);min-height:100vh;font-size:1.6rem;overflow-x:hidden}body::before{content:'';position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 20% 80%,rgba(0,36,107,0.1) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(202,220,252,0.3) 0%,transparent 50%);pointer-events:none;z-index:-1}.navbar{position:fixed;top:0;width:100%;background:rgba(202,220,252,0.9);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,36,107,0.1);z-index:1000;padding:1.5rem 2rem;display:flex;justify-content:space-between;align-items:center;transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}.navbar.scrolled{background:rgba(202,220,252,0.95);box-shadow:0 10px 40px rgba(0,36,107,0.1)}.nav-logo{font-size:2.4rem;font-weight:800;color:#00246B;text-decoration:none;letter-spacing:-0.02em;background:linear-gradient(135deg,#00246B 0%,#1a4480 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;transition:transform 0.3s ease}.nav-logo:hover{transform:scale(1.05)}.nav-links{display:flex;gap:3rem;align-items:center}.nav-links a{color:#00246B;text-decoration:none;font-weight:500;font-size:1.4rem;position:relative;padding:0.8rem 1.6rem;border-radius:50px;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);backdrop-filter:blur(10px)}.nav-links a::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(0,36,107,0.1) 0%,rgba(0,36,107,0.05) 100%);border-radius:50px;opacity:0;transition:opacity 0.3s ease;z-index:-1}.nav-links a:hover::before{opacity:1}.nav-links a:hover{color:#00246B;transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,36,107,0.15)}main{padding-top:10rem;min-height:100vh}.page-content{max-width:120rem;margin:0 auto;padding:0 2rem}#habit-calculator{background:rgba(255,255,255,0.6);backdrop-filter:blur(30px);-webkit-backdrop-filter:blur(30px);border:1px solid rgba(0,36,107,0.1);border-radius:24px;padding:4rem;margin:4rem auto;box-shadow:0 20px 60px rgba(0,36,107,0.1);position:relative;overflow:hidden}#habit-calculator::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:conic-gradient(from 0deg at 50% 50%,transparent 0deg,rgba(202,220,252,0.1) 60deg,transparent 120deg);animation:rotate 20s linear infinite;z-index:-1}@keyframes rotate{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}#habit-calculator h2{font-size:3.2rem;font-weight:700;color:#00246B;margin-bottom:1.5rem;text-align:center;letter-spacing:-0.02em}#habit-calculator .section-intro{font-size:1.8rem;color:rgba(0,36,107,0.8);text-align:center;margin-bottom:3rem;line-height:1.7}.date-calculator{display:flex;flex-direction:column;gap:3rem;align-items:center}.date-input-group{display:flex;flex-direction:column;gap:1rem;align-items:center}.date-input-group label{font-size:1.6rem;font-weight:600;color:#00246B}.date-picker{padding:1.5rem 2rem;border:2px solid rgba(0,36,107,0.2);border-radius:12px;font-size:1.6rem;background:rgba(255,255,255,0.8);color:#00246B;transition:all 0.3s ease;min-width:20rem}.date-picker:focus{outline:none;border-color:#00246B;box-shadow:0 0 0 4px rgba(0,36,107,0.1);background:rgba(255,255,255,0.95)}.result-container{text-align:center;padding:2rem;background:rgba(255,255,255,0.4);border-radius:16px;backdrop-filter:blur(10px);border:1px solid rgba(0,36,107,0.1);min-height:10rem;display:flex;flex-direction:column;justify-content:center;transition:all 0.3s ease}.selected-date{font-size:1.8rem;color:#00246B;font-weight:600;margin-bottom:1rem}.end-date{font-size:2.4rem;font-weight:700;color:#00246B;background:linear-gradient(135deg,#00246B 0%,#1a4480 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}article{margin:6rem auto;background:rgba(255,255,255,0.7);backdrop-filter:blur(30px);border-radius:24px;padding:5rem;box-shadow:0 25px 80px rgba(0,36,107,0.12);border:1px solid rgba(0,36,107,0.1)}h1{font-size:4rem;font-weight:800;color:#00246B;margin-bottom:3rem;line-height:1.2;letter-spacing:-0.02em;background:linear-gradient(135deg,#00246B 0%,#1a4480 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{font-size:2.8rem;font-weight:700;color:#00246B;margin:4rem 0 2rem 0;line-height:1.3;letter-spacing:-0.01em}h3{font-size:2.2rem;font-weight:600;color:#00246B;margin:3rem 0 1.5rem 0}p{font-size:1.7rem;line-height:1.8;color:rgba(0,36,107,0.85);margin-bottom:2rem}ol,ul{margin:2rem 0;padding-left:3rem}li{font-size:1.7rem;color:rgba(0,36,107,0.85);margin-bottom:1rem;line-height:1.7}.highlight-section{background:linear-gradient(135deg,rgba(202,220,252,0.3) 0%,rgba(202,220,252,0.1) 100%);border-left:4px solid #00246B;padding:3rem;margin:3rem 0;border-radius:12px;position:relative;backdrop-filter:blur(10px)}.highlight-section::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(0,36,107,0.05) 0%,transparent 100%);border-radius:12px;pointer-events:none}.styled-table{width:100%;border-collapse:collapse;margin:3rem 0;background:rgba(255,255,255,0.6);border-radius:16px;overflow:hidden;box-shadow:0 15px 40px rgba(0,36,107,0.1);backdrop-filter:blur(20px)}.styled-table thead{background:linear-gradient(135deg,#00246B 0%,#1a4480 100%)}.styled-table th{padding:2rem;color:white;font-weight:600;font-size:1.6rem;text-align:left;letter-spacing:0.5px}.styled-table td{padding:2rem;border-bottom:1px solid rgba(0,36,107,0.1);font-size:1.6rem;color:rgba(0,36,107,0.9);line-height:1.6}.styled-table tbody tr{transition:all 0.3s ease}.styled-table tbody tr:hover{background:rgba(202,220,252,0.3);transform:scale(1.01)}blockquote{background:rgba(255,255,255,0.5);border-left:4px solid #00246B;padding:3rem;margin:4rem 0;font-style:italic;font-size:1.8rem;color:rgba(0,36,107,0.9);border-radius:12px;backdrop-filter:blur(15px);position:relative;box-shadow:0 10px 30px rgba(0,36,107,0.1)}blockquote::before{content:'"';font-size:6rem;color:rgba(0,36,107,0.3);position:absolute;top:-1rem;left:2rem;font-family:Georgia,serif}a{color:#00246B;text-decoration:none;border-bottom:1px solid transparent;transition:all 0.3s ease;font-weight:500}a:hover{border-bottom-color:#00246B;color:#1a4480}.site-footer{background:linear-gradient(135deg,#00246B 0%,#1a4480 100%);color:white;text-align:center;padding:4rem 2rem;margin-top:6rem}.site-footer p{color:rgba(255,255,255,0.9);margin-bottom:1rem}.site-footer a{color:rgba(255,255,255,0.8);border-bottom-color:transparent}.site-footer a:hover{color:white;border-bottom-color:rgba(255,255,255,0.5)}.gdpr-notice{position:fixed;bottom:2rem;left:2rem;right:2rem;background:rgba(0,36,107,0.95);color:white;padding:2rem;border-radius:16px;backdrop-filter:blur(20px);box-shadow:0 20px 40px rgba(0,36,107,0.3);z-index:1001;transform:translateY(100px);opacity:0;transition:all 0.5s cubic-bezier(0.4,0,0.2,1)}.gdpr-notice.show{transform:translateY(0);opacity:1}.gdpr-notice p{margin:0;font-size:1.4rem}.gdpr-notice button{background:#CADCFC;color:#00246B;border:none;padding:1rem 2rem;border-radius:8px;font-weight:600;cursor:pointer;margin-left:1rem;transition:all 0.3s ease}.gdpr-notice button:hover{background:white;transform:translateY(-2px)}#back-to-top{position:fixed;bottom:3rem;right:3rem;width:5rem;height:5rem;background:linear-gradient(135deg,#00246B 0%,#1a4480 100%);color:white;border:none;border-radius:50%;font-size:2rem;cursor:pointer;opacity:0;visibility:hidden;transition:all 0.3s cubic-bezier(0.4,0,0.2,1);z-index:1000;backdrop-filter:blur(10px);box-shadow:0 10px 30px rgba(0,36,107,0.3)}#back-to-top.show{opacity:1;visibility:visible}#back-to-top:hover{transform:translateY(-3px) scale(1.1);box-shadow:0 15px 40px rgba(0,36,107,0.4)}@media (max-width:768px){html{font-size:55%}.navbar{padding:1rem 1.5rem;flex-direction:column;gap:1rem}.nav-links{gap:1.5rem;flex-wrap:wrap;justify-content:center}.nav-links a{font-size:1.3rem;padding:0.6rem 1.2rem}main{padding-top:12rem}.page-content{padding:0 1.5rem}#habit-calculator{padding:2.5rem;margin:2rem auto}article{padding:3rem}h1{font-size:3rem}h2{font-size:2.4rem}h3{font-size:2rem}.styled-table{font-size:1.4rem}.styled-table th,.styled-table td{padding:1.5rem}.gdpr-notice{left:1rem;right:1rem;bottom:1rem}.gdpr-notice button{margin-left:0;margin-top:1rem;display:block;width:100%}#back-to-top{bottom:2rem;right:2rem;width:4.5rem;height:4.5rem}}@media (max-width:480px){.navbar{padding:0.8rem 1rem}.nav-links{gap:1rem}.nav-links a{font-size:1.2rem;padding:0.5rem 1rem}#habit-calculator{padding:2rem;margin:1.5rem auto}article{padding:2rem}h1{font-size:2.6rem}h2{font-size:2.2rem}.styled-table th,.styled-table td{padding:1rem;font-size:1.3rem}.date-calculator{gap:2rem}.date-picker{min-width:100%;font-size:1.4rem}}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms!important;animation-iteration-count:1!important;transition-duration:0.01ms!important}}@media (prefers-color-scheme:dark){body{background:linear-gradient(135deg,#001a4d 0%,rgba(0,26,77,0.8) 100%);color:#CADCFC}.navbar{background:rgba(0,36,107,0.9)}.nav-logo{color:#CADCFC;background:linear-gradient(135deg,#CADCFC 0%,#a8c5f7 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav-links a{color:#CADCFC}.nav-links a:hover{color:#CADCFC}#habit-calculator,article{background:rgba(0,36,107,0.6);border-color:rgba(202,220,252,0.2)}h1,h2,h3{color:#CADCFC;background:linear-gradient(135deg,#CADCFC 0%,#a8c5f7 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent}p,li{color:rgba(202,220,252,0.9)}.highlight-section{background:linear-gradient(135deg,rgba(0,36,107,0.4) 0%,rgba(0,36,107,0.2) 100%);border-left-color:#CADCFC}.styled-table{background:rgba(0,36,107,0.4)}.styled-table thead{background:linear-gradient(135deg,#CADCFC 0%,#a8c5f7 100%)}.styled-table th{color:#00246B}.styled-table td{color:rgba(202,220,252,0.9);border-bottom-color:rgba(202,220,252,0.1)}blockquote{background:rgba(0,36,107,0.3);color:rgba(202,220,252,0.9)}a{color:#CADCFC}a:hover{color:#a8c5f7}}