/* Vong quay khuyen mai cho shop */
:root { --pri: #e11d48; --ink: #111827; --ink2: #4b5563; --line: #e5e7eb; --bg: #fff7ed; }
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; color: var(--ink); background: var(--bg); line-height: 1.5; }
a { color: var(--pri); }
.km-top { display: flex; justify-content: space-between; align-items: center; padding: 10px 16px; background: #fff; border-bottom: 1px solid var(--line); }
.km-logo { display: flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); text-decoration: none; }
.km-link { font-size: 14px; text-decoration: none; }
.km-main { max-width: 760px; margin: 0 auto; padding: 16px; }
.km-hero h1 { font-size: clamp(26px, 5vw, 38px); margin: 10px 0 6px; line-height: 1.2; }
.km-hero h1 span { color: var(--pri); }
.km-hero p { color: var(--ink2); margin: 0 0 16px; }
.km-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 18px; margin-bottom: 18px; box-shadow: 0 4px 18px rgba(0,0,0,.05); }
.km-card label { display: block; font-weight: 600; margin-bottom: 12px; }
.km-card label small { font-weight: 400; color: var(--ink2); }
.km-card input, .km-card textarea, .km-card select { width: 100%; margin-top: 4px; padding: 10px 12px; border: 1px solid #d1d5db; border-radius: 10px; font: inherit; }
.km-row { display: flex; flex-wrap: wrap; gap: 10px 20px; align-items: center; margin-bottom: 12px; }
.km-row label { margin: 0; font-weight: 500; }
.km-chk input, .km-days select { width: auto; margin: 0 6px 0 0; }
.km-btn { display: inline-block; background: var(--pri); color: #fff; border: 0; border-radius: 999px; padding: 12px 22px; font: inherit; font-weight: 700; cursor: pointer; text-decoration: none; }
.km-btn.alt { background: #fff; color: var(--pri); border: 2px solid var(--pri); padding: 10px 20px; }
.km-btn:disabled { opacity: .6; }
.km-err { color: #b91c1c; font-weight: 600; min-height: 1.2em; margin: 8px 0 0; }
.km-note { color: var(--ink2); font-size: 14px; }
.km-copy { display: flex; gap: 6px; margin: 6px 0 10px; }
.km-copy input { flex: 1; min-width: 0; padding: 8px 10px; border: 1px solid #d1d5db; border-radius: 8px; font-size: 14px; }
.km-copy button, .km-tools button, .km-rows button { border: 1px solid #d1d5db; background: #fff; border-radius: 8px; padding: 6px 12px; cursor: pointer; font: inherit; font-size: 14px; }
.km-qr canvas { width: 200px; height: 200px; margin: 6px 0; image-rendering: pixelated; }
.km-seo h2 { font-size: 22px; margin: 26px 0 10px; }
.km-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.km-grid h3 { font-size: 17px; margin: 0 0 4px; }
.km-grid > div { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 12px; }
.km-seo details { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; margin-bottom: 8px; }
.km-seo summary { font-weight: 600; cursor: pointer; }
.km-play { text-align: center; }
.km-play h1 { font-size: clamp(22px, 5vw, 32px); margin: 8px 0 4px; }
.km-wheel { position: relative; width: min(92vw, 420px); margin: 10px auto; }
.km-wheel canvas { width: 100%; height: auto; display: block; cursor: pointer; filter: drop-shadow(0 8px 20px rgba(0,0,0,.18)); }
.km-ptr { position: absolute; top: -6px; left: 50%; transform: translateX(-50%); width: 0; height: 0; border-left: 16px solid transparent; border-right: 16px solid transparent; border-top: 30px solid var(--ink); }
.km-form { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.km-form input { width: min(92vw, 320px); padding: 12px; border: 1px solid #d1d5db; border-radius: 10px; font: inherit; text-align: center; font-size: 18px; }
.km-win-c { background: #fff; border: 2px solid var(--pri); border-radius: 18px; padding: 18px; max-width: 420px; margin: 8px auto; }
.km-win-k { font-size: 24px; font-weight: 700; }
.km-win-p { font-size: clamp(26px, 7vw, 40px); font-weight: 800; color: var(--pri); margin: 6px 0; }
.km-gift { font-size: 20px; } .km-gift b { font-size: 30px; letter-spacing: 3px; background: #fef3c7; padding: 2px 10px; border-radius: 8px; }
.km-made { font-size: 14px; color: var(--ink2); margin-top: 22px; }
.km-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 10px 0 14px; }
.km-stats div { background: var(--bg); border-radius: 12px; padding: 10px; text-align: center; }
.km-stats b { display: block; font-size: 22px; } .km-stats span { font-size: 13px; color: var(--ink2); }
.km-tools { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }
.km-tools input { flex: 1; min-width: 160px; }
.km-tools .danger { color: #b91c1c; border-color: #fecaca; }
.km-t { width: 100%; border-collapse: collapse; font-size: 14px; }
.km-t th, .km-t td { border-bottom: 1px solid var(--line); padding: 6px 4px; text-align: left; }
.km-rows tr.used td { color: #9ca3af; }
.km-det { margin: 10px 0; }