.side{background:linear-gradient(180deg,#031936 0%,#06244a 55%,#031936 100%);border-right:1px solid #173b64;box-shadow:18px 0 45px #071b3214}.side header{padding-bottom:22px;border-bottom:1px solid #ffffff18}.side header>b{width:100%;height:auto;aspect-ratio:1.9;background:transparent;border:1px solid #ffffff18;box-shadow:0 16px 35px #0005}.side header>b img{object-fit:contain}.side header>span{display:none}.side nav{gap:8px;margin-top:18px}.side nav button{position:relative;padding:15px 18px 15px 50px;border:1px solid transparent;border-radius:12px;color:#dbe9f5;font-weight:750;transition:.2s ease}.side nav button:before{position:absolute;left:18px;top:50%;transform:translateY(-50%);width:22px;text-align:center;font-size:18px}.side nav button[data-page="dashboard"]:before{content:'⌂'}.side nav button[data-page="sale"]:before{content:'＋'}.side nav button[data-page="inventory"]:before{content:'▦'}.side nav button[data-page="returns"]:before{content:'↩'}.side nav button[data-page="reports"]:before{content:'▥'}.side nav button[data-page="settings"]:before{content:'⚙'}.side nav button:hover{background:#ffffff0d;border-color:#ffffff16;transform:translateX(3px)}.side nav button.active{background:linear-gradient(135deg,#f7ad36,#ec921c);color:#071a34;box-shadow:0 12px 28px #e78d243d}.side .logout{color:#dbe9f5;border-top-color:#ffffff20}.shell main{background:radial-gradient(circle at 88% 0,#e6f1f5 0,#f4f7f8 34%,#f7f9fa 100%)}.top{border-bottom:1px solid #d9e4e8;padding-bottom:22px}.top>span:first-child small{color:#a87922;letter-spacing:.16em}.sectionhead{margin-top:26px}.sectionhead h2{font-size:30px}.settings{max-width:1120px;padding:34px;border:1px solid #d8e3e8;box-shadow:0 18px 50px #102f4420;background:#ffffff}.settings label{color:#213b4c}.settings input{background:#f9fbfc;border-color:#d4e0e5;transition:.2s}.settings input:focus{background:#fff;border-color:#d99a2b;box-shadow:0 0 0 4px #f3aa2c1f}.settings p{grid-column:1/-1;margin:4px 0 0;padding:15px 18px;border-radius:10px;background:#f0f6f8;color:#667d89;font-size:14px}.settings code{font-family:inherit;font-weight:800;color:#385968}@media(max-width:900px){.side header>b{max-width:210px}.settings{padding:22px}.side nav button{padding-left:44px}}