:root{--zalo-blue: #0068ff;--zalo-blue-dark: #004fc4;--zalo-blue-soft: #e8f3ff;--zalo-navy: #081c36;--text: #1a1a1a;--muted: #6b7280;--line: #eef1f6;--card: #f6f7f9;--white: #ffffff;--danger: #e11d48;--shadow: 0 10px 10px -10px rgba(8, 28, 54, .1);--font-body: "Inter", sans-serif;--font-heading: "Prompt", sans-serif;--radius-sm: 5px;--radius-md: 15px;--header-h: 90px;--container: 1320px;font-family:var(--font-body);font-size:16px;font-weight:400;line-height:1.625;color:var(--text);background:var(--white)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}html,body{overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.2;margin:0 0 20px;padding:0}h1{font-size:clamp(36px,5vw,56px)}h2{font-size:clamp(28px,4vw,42px)}h3{font-size:21px}p{margin:0 0 15px}a{color:inherit;text-decoration:none;transition:all .3s ease}button,input,select,textarea{font:inherit;transition:all .3s ease}img{max-width:100%;height:auto;display:block}.container{width:min(var(--container),calc(100% - 24px));margin:0 auto}.header{position:sticky;top:0;z-index:20;background:#fffffff5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:all .4s ease}.header-inner{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;min-height:var(--header-h);gap:16px}.brand{display:flex;align-items:center;gap:12px;justify-self:start}.brand-logo{height:45px;width:auto;max-width:120px;object-fit:contain}.brand-copy{display:flex;flex-direction:column;line-height:1.15}.brand-name{font-family:var(--font-heading);font-weight:700;font-size:18px}.brand-tag{font-size:12px;font-weight:500;color:var(--muted)}.brand-mark{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--zalo-blue);color:#fff;display:grid;place-items:center;font-family:var(--font-heading);font-weight:700}.nav{display:flex;align-items:center;justify-content:center;gap:40px;font-family:var(--font-heading);font-size:16px;font-weight:500;line-height:1.6}.nav a{display:inline-flex;align-items:center;min-height:var(--header-h);padding:10px 0}.nav a.active,.nav a:hover{color:var(--zalo-blue)}.header-cta{display:flex;justify-content:flex-end;gap:10px}.btn{border:2px solid transparent;cursor:pointer;border-radius:var(--radius-md);padding:10px 20px;min-height:50px;font-family:var(--font-heading);font-size:16px;font-weight:500;line-height:1.625;display:inline-flex;align-items:center;justify-content:center;gap:10px;outline:none;transition:all .3s ease}.btn-primary{background:var(--zalo-blue);border-color:var(--zalo-blue);color:#fff}.btn-primary:hover{background:var(--zalo-blue-dark);border-color:var(--zalo-blue-dark)}.btn-ghost{background:transparent;color:var(--zalo-navy);border-color:var(--line)}.btn-ghost:hover{border-color:var(--zalo-navy)}.btn-block{width:100%}.hero{position:relative;overflow:hidden;padding:72px 0 96px}.hero-art,.hero-art-br{position:absolute;width:280px;height:280px;background:linear-gradient(135deg,#d7ebff,#f3f9ff);pointer-events:none;border-radius:var(--radius-md)}.hero-art{left:-80px;bottom:-40px}.hero-art-br{right:-40px;top:-80px}.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;position:relative}.hero-visual{min-height:360px;display:grid;place-items:center}.hero-visual img{width:min(520px,100%);border-radius:var(--radius-md);filter:drop-shadow(0 30px 40px rgba(0,80,196,.18))}.kicker{color:var(--muted);font-size:18px;font-weight:500;line-height:1.625;margin-bottom:10px}.hero h1,.page-title{font-size:clamp(36px,5vw,50px);line-height:1.3;margin:0 0 16px}.lede{color:var(--muted);max-width:460px;margin-bottom:28px;font-size:16px;line-height:1.625}.dots{display:flex;justify-content:center;gap:8px;margin-top:28px}.dot{width:9px;height:9px;border-radius:50%;border:0;background:#d3dbe6;cursor:pointer}.dot.active{background:var(--zalo-blue-dark)}.section{padding:24px 0 96px}.tabs{display:flex;justify-content:center;gap:36px;margin-bottom:36px;font-family:var(--font-heading);font-weight:500}.tab{background:none;border:0;padding:8px 16px;color:var(--text);cursor:pointer;border-radius:999px;font-family:var(--font-heading);font-weight:500}.tab.active{outline:1px solid #111}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.card{background:var(--card);min-height:340px;position:relative;padding:18px 16px 22px;display:flex;flex-direction:column;align-items:center;text-align:center;border-radius:var(--radius-md)}.wish{position:absolute;top:14px;right:14px;background:none;border:0;cursor:pointer;color:#9aa3af}.card-image{height:180px;display:grid;place-items:center;width:100%}.card-image img{max-height:160px;object-fit:contain;border-radius:var(--radius-sm)}.countdown{display:flex;gap:6px;margin:8px 0 14px}.cd{background:#fff;border:1px solid #e5e7eb;border-radius:var(--radius-sm);min-width:42px;padding:4px 0}.cd b{display:block;font-family:var(--font-heading);font-size:14px}.cd span{font-size:9px;color:var(--muted);text-transform:uppercase}.card h3{font-size:18px;font-weight:600;margin:8px 0 10px;line-height:1.31}.price{display:flex;gap:8px;align-items:baseline;justify-content:center;font-family:var(--font-heading);font-weight:700}.price s{color:#9aa3af;font-weight:400;font-size:13px}.detail{display:grid;grid-template-columns:1fr 1fr;gap:48px;padding:48px 0 80px}.detail img{border-radius:var(--radius-md)}.panel{background:var(--card);padding:24px;border-radius:var(--radius-md)}.field{display:flex;flex-direction:column;gap:8px;margin:16px 0}.field label{font-family:var(--font-heading);font-weight:500}.field input,.field textarea,.field select{border:1px solid #dbe3ee;border-radius:var(--radius-sm);padding:12px 14px;outline:none}.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--zalo-blue)}.muted{color:var(--muted)}.center-card{width:min(560px,calc(100% - 32px));margin:48px auto 80px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);padding:36px 28px;box-shadow:var(--shadow)}.qr-wrap{display:inline-block;padding:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin:18px 0}.banner{background:var(--zalo-blue-soft);color:var(--zalo-blue-dark);padding:10px 12px;border-radius:var(--radius-sm);font-size:14px}.error{color:var(--danger);font-size:14px}.footer{border-top:1px solid var(--line);padding:48px 0 28px;color:var(--muted);font-size:16px;line-height:1.625}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px}.footer-brand{display:flex;flex-direction:column;gap:16px;max-width:420px}.footer-brand p{margin:0}.footer-brand a,.footer-links a,.footer-copy a{color:var(--zalo-navy);font-weight:500}.footer-brand a:hover,.footer-links a:hover,.footer-copy a:hover{color:var(--zalo-blue)}.footer-title{font-size:21px;font-weight:600;line-height:1.2;margin-bottom:16px;color:var(--text)}.footer-links{list-style:none;margin:0;padding:0;font-family:var(--font-heading);font-weight:500}.footer-links li+li{margin-top:10px}.footer-copy{grid-column:1 / -1;padding-top:12px;border-top:1px solid var(--line);font-size:14px}.admin-shell{display:grid;grid-template-columns:240px 1fr;height:100vh;min-height:100vh;overflow:hidden;transition:grid-template-columns .2s ease;background:#07152b;align-items:stretch}.admin-shell.nav-collapsed{grid-template-columns:84px 1fr}.side{background:#07152b;color:#fff;height:100%;min-height:0;overflow:hidden}.side-inner{height:100%;display:flex;flex-direction:column;padding:20px 12px}.side-top{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;margin-bottom:24px}.side .brand{color:#fff;min-width:0;flex:1}.side .brand-logo{height:36px;max-width:72px}.side .brand-name{font-size:16px}.side-toggle{flex-shrink:0;width:36px;height:36px;border:1px solid #334155;background:transparent;color:#c9d4e5;border-radius:var(--radius-sm);cursor:pointer;display:grid;place-items:center;padding:0}.side-toggle:hover{background:#0068ff40;color:#fff}.side-nav{display:flex;flex-direction:column;gap:6px;flex:1}.side-link{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);color:#c9d4e5;font-family:var(--font-heading);font-weight:500;min-height:44px;background:transparent;border:0;width:100%;text-align:left;cursor:pointer}.side-link.active,.side-link:hover{background:#0068ff40;color:#fff}.side-logout{margin-top:12px;color:#c9d4e5}.side-label{white-space:nowrap;overflow:hidden}.side-icon{width:20px;height:20px;flex-shrink:0;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.nav-collapsed .side-inner{padding:20px 8px;align-items:center}.nav-collapsed .side-top{flex-direction:column;align-items:center;margin-bottom:18px}.nav-collapsed .brand-copy,.nav-collapsed .side-label{display:none}.nav-collapsed .side-link{justify-content:center;padding:10px;width:48px}.nav-collapsed .side-nav,.nav-collapsed .side-logout{align-items:center;width:auto}.admin-main{padding:28px;background:#f7f9fc;min-width:0;min-height:0;height:100%;overflow:auto}.admin-main h1{font-size:clamp(28px,3vw,36px)}.form-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:8px}.back-to-top{position:fixed;right:24px;bottom:24px;z-index:40;width:52px;height:52px;border:0;border-radius:50%;background:var(--zalo-blue);color:#fff;box-shadow:0 10px 24px #0068ff59;cursor:pointer;display:grid;place-items:center;padding:0;opacity:0;pointer-events:none;transform:translateY(12px);transition:opacity .2s ease,transform .2s ease}.back-to-top.is-visible{opacity:1;pointer-events:auto;transform:translateY(0)}.back-to-top:hover{background:var(--zalo-blue-dark)}.admin-toasts{position:fixed;top:20px;right:20px;z-index:60;display:flex;flex-direction:column;gap:10px;width:min(360px,calc(100vw - 40px))}.admin-toast{display:flex;flex-direction:column;align-items:flex-start;gap:2px;text-align:left;border:0;border-radius:var(--radius-md);padding:14px 16px;background:#fff;color:var(--text);box-shadow:0 16px 40px #081c362e;border-left:4px solid #16a34a;cursor:pointer;font:inherit}.admin-toast strong{font-family:var(--font-heading);color:#166534}.admin-toast-amount{font-family:var(--font-heading);font-weight:700;margin-top:4px}.back-to-top .side-icon{width:22px;height:22px}.is-spinning{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.preview-overlay{position:fixed;inset:0;z-index:50;background:#081c368c;display:grid;place-items:center;padding:24px 16px}.preview-dialog{width:min(1080px,100%);max-height:calc(100vh - 48px);overflow:auto;background:#fff;border-radius:var(--radius-md);padding:28px;box-shadow:0 24px 60px #081c3647}.preview-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:8px}.preview-head h2{margin:0;font-size:28px}.preview-section-title{margin:28px 0 14px;font-size:18px}.preview-card-wrap{max-width:280px}.preview-detail{padding:0}.preview-placeholder{width:100%;min-height:140px;display:grid;place-items:center;background:var(--card);color:var(--muted);border-radius:var(--radius-sm);font-size:14px}.preview-placeholder-lg{min-height:280px}.checkout-customer{margin:8px 0 4px;padding:16px 0 4px;border-top:1px solid var(--line)}.checkout-customer-title{margin:0 0 8px;font-size:20px}.clickable-row{cursor:pointer}.clickable-row:hover,.clickable-row:focus-visible{background:var(--zalo-blue-soft)}.order-dialog{width:min(560px,100%)}.order-detail-list{margin:12px 0 0}.order-detail-row{display:grid;grid-template-columns:140px 1fr;gap:12px;padding:10px 0;border-bottom:1px solid var(--line);font-size:14px}.order-detail-row:last-child{border-bottom:none}.order-detail-row dt{margin:0;color:var(--muted)}.order-detail-row dd{margin:0;font-weight:600;word-break:break-word}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);font-size:14px}th{font-family:var(--font-heading);font-weight:600}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.thumb-preview{width:240px;height:160px;object-fit:cover;border-radius:var(--radius-sm);background:var(--card);margin-top:8px}.success-pill{display:inline-block;background:#dcfce7;color:#166534;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600;font-family:var(--font-heading)}@media(max-width:980px){.hero-grid,.detail,.admin-shell,.admin-shell.nav-collapsed,.footer-grid,.header-inner{grid-template-columns:1fr}.header-inner{min-height:72px}.admin-shell,.admin-shell.nav-collapsed{height:auto;min-height:100vh;overflow:visible}.side-inner,.nav-collapsed .side-inner{position:relative;min-height:0;height:auto;padding:16px}.admin-main{height:auto;overflow:visible}.side-top,.nav-collapsed .side-top{flex-direction:row;align-items:center;margin-bottom:12px}.side-nav{flex-direction:row;flex-wrap:wrap;flex:none}.nav-collapsed .side-link{width:auto}.preview-detail{grid-template-columns:1fr}.grid{grid-template-columns:1fr 1fr}.nav,.header-cta{display:none}.hero{padding:40px 0 64px}}@media(max-width:640px){.grid{grid-template-columns:1fr}.brand-tag{display:none}.order-detail-row{grid-template-columns:1fr;gap:4px}}