:root{--primary-color:var(--color-0056b3);--secondary-color:var(--primary);--accent-color:var(--color-ffc107);--text-light:var(--white);--text-dark:var(--color-343a40);--bg-light:var(--bg-muted);--header-red:var(--header-red)}body{font-family:var(--font-sans-vi,"Segoe UI", Tahoma, Arial, "Noto Sans", "Liberation Sans", sans-serif);background-color:var(--surface-bg);color:var(--text-dark)}.container{background:0 0;flex-direction:column;width:100%;height:auto;min-height:100vh;padding-bottom:0;display:flex;position:relative;overflow:visible}main,.admin-main,.general-menu,#main-menu{background-color:#0000!important}.main-header,.page-header{background-color:var(--header-red);background-blend-mode:normal;color:var(--text-light);background-image:url(/assets/5tayHCC-background.opt-CFtQoaCI.webp);background-position:50%;background-size:cover;flex-shrink:0;align-items:center;gap:20px;padding:10px 25px;display:flex;position:relative}main{z-index:1;flex-direction:column;flex-grow:1;padding:0;display:flex;position:relative;overflow-y:visible}.main-content-wrapper{box-sizing:border-box;flex-direction:column;min-height:0;padding:25px;display:flex}.main-header{justify-content:space-between}.header-left{align-items:center;gap:20px;display:flex}.header-qr{text-align:center}.header-qr img{border:2px solid #fff;border-radius:8px;width:80px;height:80px}.header-qr p{text-shadow:1px 1px 2px var(--black);margin:4px 0 0;font-size:.8em;font-weight:700}.header-logo{flex-shrink:0;height:70px}.header-logo.small-logo{height:50px}.header-text{text-align:left;text-shadow:1px 1px 3px #00000080}.header-title-main{font-size:2em;font-weight:700}.header-title-sub{font-size:1.8em;font-weight:700}.header-tagline{opacity:.9;margin-top:5px;font-size:1.1em}.page-header{justify-content:flex-start}.page-header .header-title-container{text-align:center;text-shadow:1px 1px 3px #00000080;flex-grow:1}footer{background-color:var(--header-red);background-blend-mode:normal;z-index:2;text-align:center;color:#fff;box-sizing:border-box;background-image:url(/assets/5tayHCC-background.opt-CFtQoaCI.webp);background-position:50%;background-size:cover;flex-shrink:0;justify-content:center;align-items:center;gap:20px;width:100%;min-height:110px;margin:0;padding:10px 25px;font-size:1.3em;font-style:italic;font-weight:bolder;display:flex;position:relative;overflow:hidden;box-shadow:0 4px 8px #0003}.container>footer{margin-top:auto}footer:before{content:"";background-blend-mode:normal;z-index:-1;background-image:none;background-position:50%;background-size:cover;width:100%;height:100%;position:absolute;top:0;left:0;transform:scaleX(-1)}.gradient-text{background-image:linear-gradient(to right, var(--color-e5ff00), var(--color-ff7f00), var(--color-ffff00), var(--color-00ff00), var(--color-fbfbfc), var(--color-0b8200), var(--color-00b3d3), var(--color-eeff00));color:#0000;background-size:200%;-webkit-background-clip:text;background-clip:text;animation:8s linear infinite text-flow}@keyframes text-flow{to{background-position:-200%}}main.with-description{padding-top:25px}.back-button{color:#fff;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);cursor:pointer;z-index:10;background-color:#ffffff26;border:1px solid #ffffff4d;border-radius:8px;align-items:center;gap:8px;padding:8px 16px;font-size:1rem;font-weight:600;text-decoration:none;transition:all .2s ease-in-out;display:flex;position:absolute;top:15px;left:15px;transform:none}.back-button:hover,.back-button:active{background-color:#ffffff40;border-color:#ffffff80;transform:translateY(-1px)}.back-button svg,.back-button i{font-size:1.2em}.countdown-container{background-color:var(--accent-color);color:var(--text-dark);border-radius:8px;padding:10px 15px;font-size:1.1em;font-weight:700;position:absolute;top:50%;right:20px;transform:translateY(-50%)}.action-button{background:var(--success);color:var(--text-light);cursor:pointer;border:none;border-radius:12px;padding:18px 35px;font-size:1.4em;transition:all .3s}.action-button:hover:not(:disabled){background-color:var(--success-hover)}.action-button:disabled{background:var(--border-weak);cursor:not-allowed}.action-button.secondary{background-color:var(--danger)}.action-button.secondary:hover{background:var(--danger-hover)}.action-button.small{cursor:pointer;color:#910f0f;white-space:nowrap;background-color:#910f0f0d;border:1.5px solid #910f0f4d;border-radius:6px;flex-grow:0;flex-shrink:0;align-items:center;gap:6px;padding:8px 16px;font-size:.95rem;font-weight:600;transition:all .2s ease-in-out;display:inline-flex}.action-button.small:hover{color:#fff;background-color:#910f0f;border-color:#910f0f;transform:translateY(-1px);box-shadow:0 4px 12px #910f0f26}.action-button.small:active{filter:brightness(.9);transform:translateY(0)}.action-button.small:before{content:"";font-size:1.1em}.hidden{display:none!important}.sr-only{clip:rect(0, 0, 0, 0)!important;white-space:nowrap!important;border:0!important;width:1px!important;height:1px!important;margin:-1px!important;padding:0!important;position:absolute!important;overflow:hidden!important}p.page-description{text-align:center;color:var(--header-red);visibility:visible;opacity:1;margin-top:-10px;margin-bottom:10px;font-size:1.3em;font-weight:700;transition:opacity .3s,transform .3s,visibility .3s;transform:translateY(0)}p.page-description.hidden-on-scroll{opacity:0;visibility:hidden;transform:translateY(-20px)}.toast-notification{color:#fff;z-index:2000;opacity:0;visibility:hidden;text-align:center;border-radius:8px;min-width:350px;max-width:500px;padding:0;font-size:1.1em;font-weight:500;transition:all .5s ease-in-out;position:fixed;top:20px;left:50%;overflow:hidden;transform:translate(-50%,-150%);box-shadow:0 5px 15px #0003}#toast-message{padding:16px 25px;line-height:1.4;display:block}.toast-notification.show{opacity:1;visibility:visible;transform:translate(-50%)}.toast-notification.success{background-color:var(--success)}.toast-notification.error{background-color:var(--danger)}#toast-timer{background-color:#0003;width:100%;height:5px}@keyframes countdown{0%{width:100%}to{width:0%}}.modal-overlay{z-index:1000;background:#0009;justify-content:center;align-items:center;width:100%;height:100%;display:none;position:fixed;top:0;left:0}.modal-box{background-color:var(--surface-opaque);text-align:center;border-radius:12px;width:90%;max-width:450px;padding:25px;box-shadow:0 5px 20px #0003}.modal-actions{justify-content:center;gap:15px;margin-top:20px;display:flex}.modal-confirm-btn,.modal-cancel-btn{cursor:pointer;border:none;border-radius:8px;padding:10px 25px;font-size:1em;font-weight:700;transition:background-color .2s}.modal-confirm-btn{background-color:var(--success);color:var(--text-light)}.modal-cancel-btn{background-color:var(--muted);color:var(--text-light)}