/* ============================================================
   editvideo.luutanhainam.com — sale page khóa dựng video tự động bằng AI
   Bảng màu giữ đúng thương hiệu luutanhainam.com (xanh rêu + kem),
   thêm một màu cam đất chỉ dành cho nút bấm để mắt tìm ra nút ngay.
   ============================================================ */

:root {
  --primary: #2F4A38;
  --accent: #4A7C59;
  --accent-dark: #3B6248;
  --dark: #1F3327;
  --text: #2d2d2d;
  --muted: #5b6b7a;
  --bg: #ffffff;
  --cream: #F7F5EF;
  --line: #e2e7dc;
  --cta: #C25A2B;
  --cta-dark: #A44A22;
  --do: #B3261E;
  --do-nhat: #FBEDEB;
  --xanh-nhat: #EDF4EF;
  --font-display: 'Lora', Georgia, serif;
  --font-body: 'Be Vietnam Pro', system-ui, sans-serif;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(47, 74, 56, .10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 1.05rem;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 0;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-dark); }
ul { list-style: none; }

.wrap { max-width: 780px; margin: 0 auto; padding: 0 22px; }
.wrap-rong { max-width: 1060px; margin: 0 auto; padding: 0 22px; }
section { padding: 56px 0; }
.nen-kem { background: var(--cream); }
.nen-dam { background: var(--dark); color: #e8efe9; }
.nen-dam h2, .nen-dam h3 { color: #fff; }
/* Thẻ nền trắng đặt trong khối nền đậm: trả lại màu chữ tối, nếu không chữ trắng
   nằm trên nền trắng và cả thẻ coi như trống (đã vấp 30/09). */
.nen-dam .the, .nen-dam .buoc, .nen-dam .dd-o, .nen-dam .ck { color: var(--text); }
.nen-dam .the h3, .nen-dam .buoc h3, .nen-dam .dd-o h3, .nen-dam .ck h2 { color: var(--primary); }

h1, h2, h3 { font-family: var(--font-display); line-height: 1.26; color: var(--primary); }
h1 { font-size: 2.5rem; }
h2 { font-size: 1.8rem; margin-bottom: 1rem; }
h3 { font-size: 1.2rem; margin-bottom: .45rem; }
p { margin-bottom: 1rem; }
strong { color: var(--primary); font-weight: 700; }
.nen-dam strong { color: #fff; }

.giua { text-align: center; }
.dan { color: var(--muted); font-size: 1.04rem; max-width: 640px; margin: 0 auto 2rem; }
.giua h2 { text-align: center; }

/* ---------- Nút ---------- */
.nut {
  display: inline-block; background: var(--cta); color: #fff;
  font-weight: 700; font-size: 1.05rem; letter-spacing: .3px;
  padding: 17px 38px; border-radius: 999px; text-decoration: none;
  box-shadow: 0 10px 24px rgba(194, 90, 43, .30);
  transition: transform .15s ease, background .15s ease;
}
.nut:hover { background: var(--cta-dark); transform: translateY(-2px); }
.nut-lon { font-size: 1.12rem; padding: 19px 46px; }
.nut-vien {
  display: inline-block; border: 2px solid rgba(255,255,255,.55); color: #fff;
  padding: 14px 30px; border-radius: 999px; text-decoration: none; font-weight: 600;
}

/* ---------- Đầu trang ---------- */
.dau {
  background: linear-gradient(170deg, var(--dark) 0%, var(--primary) 62%, #3a5c45 100%);
  color: #e9f0ea; padding: 58px 0 66px; text-align: center;
}
.dau .nhan {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: 1.4px;
  background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.22);
  padding: 8px 18px; border-radius: 999px; margin-bottom: 22px; color: #cfe0d4;
}
.dau h1 { color: #fff; font-size: 2.85rem; margin-bottom: 18px; }
.dau h1 .sang { color: #F2B880; display: block; }
.dau .mo-ta { max-width: 640px; margin: 0 auto 26px; color: #cbdbcf; font-size: 1.1rem; }
.dau-gach { list-style: none; max-width: 560px; margin: 0 auto 30px; text-align: left; }
.dau-gach li {
  padding: 7px 0 7px 32px; position: relative; color: #dce8de;
}
.dau-gach li::before {
  content: "✓"; position: absolute; left: 4px; top: 7px;
  color: #8FD3A3; font-weight: 700;
}
.dau-logo { width: 62px; height: 62px; border-radius: 50%; margin: 0 auto 18px; }

/* ---------- Khối video xem thử ---------- */
.khung-video {
  position: relative; padding-top: 56.25%; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); background: #000;
}
.khung-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

/* ---------- Danh sách dấu ✕ / ✓ ---------- */
.ds-x li, .ds-v li {
  position: relative; padding: 9px 0 9px 36px; border-bottom: 1px solid var(--line);
}
.ds-x li:last-child, .ds-v li:last-child { border-bottom: 0; }
.ds-x li::before {
  content: "✕"; position: absolute; left: 6px; top: 9px; color: var(--do); font-weight: 700;
}
.ds-v li::before {
  content: "✓"; position: absolute; left: 6px; top: 9px; color: var(--accent); font-weight: 700;
}

/* ---------- Ba thẻ hậu quả ---------- */
.luoi-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.the {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 24px; box-shadow: var(--shadow);
}
.the-canh { border-top: 4px solid var(--cta); }

/* ---------- Ba bước giao việc ---------- */
.buoc-hang { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 8px; }
.buoc {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px;
}
.buoc .so {
  font-family: var(--font-display); font-size: 2rem; color: var(--accent);
  line-height: 1; margin-bottom: 10px; display: block;
}

/* ---------- Trước / sau ---------- */
.ts { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.ts-o { border-radius: var(--radius); padding: 26px 24px; }
.ts-truoc { background: var(--do-nhat); border: 1px solid #f0cfcb; }
.ts-sau { background: var(--xanh-nhat); border: 1px solid #cfe2d5; }
.ts-o h3 { font-size: .85rem; letter-spacing: 1.2px; font-family: var(--font-body);
  font-weight: 800; margin-bottom: 14px; }
.ts-truoc h3 { color: var(--do); }
.ts-sau h3 { color: var(--accent-dark); }

/* ---------- Lộ trình 6 bước ---------- */
.lo-trinh { max-width: 720px; margin: 0 auto; }
.lt {
  display: flex; gap: 20px; padding: 22px 0; border-bottom: 1px solid var(--line);
}
.lt:last-child { border-bottom: 0; }
.lt-so {
  flex: 0 0 96px; font-weight: 800; font-size: .78rem; letter-spacing: 1.1px;
  color: var(--accent); padding-top: 4px;
}

/* ---------- Hợp / không hợp ---------- */
.hop { display: grid; grid-template-columns: 1.15fr .85fr; gap: 22px; align-items: start; }

/* ---------- Vì sao dễ ---------- */
.dd { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.dd-o { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; }
.dd-o h3 { position: relative; padding-left: 28px; }
.dd-o h3::before { content: "✓"; position: absolute; left: 0; color: var(--accent); }

/* ---------- Giảng viên ---------- */
.gv { display: grid; grid-template-columns: 300px 1fr; gap: 34px; align-items: start; }
.gv-anh { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; }
.gv-ct { font-size: .9rem; color: var(--muted); margin-top: 10px; text-align: center; }
.gv-so { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 26px 0 0; }
.gv-so div { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; text-align: center; }
.gv-so .so { display: block; font-family: var(--font-display); font-size: 1.32rem; color: var(--accent-dark); }
.gv-so .y { font-size: .9rem; color: var(--muted); line-height: 1.5; }

/* ---------- Chia sẻ học viên ---------- */
.cs { background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--accent);
  border-radius: var(--radius); padding: 24px; margin-bottom: 18px; }
.cs .ai { font-weight: 700; color: var(--primary); margin-bottom: 8px; }

/* ---------- Bạn nhận được gì ---------- */
.nd li { position: relative; padding: 14px 0 14px 30px; border-bottom: 1px solid var(--line); }
.nd li:last-child { border-bottom: 0; }
.nd li::before { content: "●"; position: absolute; left: 4px; top: 14px; color: var(--accent); }
.nd b { color: var(--primary); }

/* ---------- Giá ---------- */
.gia-o { text-align: center; max-width: 560px; margin: 34px auto 0;
  background: #fff; border: 2px solid var(--accent); border-radius: 16px; padding: 32px 26px;
  box-shadow: var(--shadow); }
.gia-nhan { font-size: .92rem; color: var(--muted); }
.gia-goc { font-size: 1.5rem; color: var(--muted); text-decoration: line-through; margin-bottom: 12px; }
.gia-uu { font-family: var(--font-display); font-size: 3rem; color: var(--cta); line-height: 1.1; margin-bottom: 18px; }
.gia-ghi { font-size: .95rem; color: var(--muted); margin: 16px 0 0; }

/* ---------- Cam kết ---------- */
.ck { background: #fff; border: 1px dashed var(--accent); border-radius: var(--radius);
  padding: 30px 28px; max-width: 720px; margin: 0 auto; }

/* ---------- Form ---------- */
.form-o { max-width: 520px; margin: 0 auto; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); padding: 30px 28px; box-shadow: var(--shadow); }
.form-o label { display: block; font-weight: 600; font-size: .95rem; margin-bottom: 6px; color: var(--primary); }
.form-o input, .form-o textarea {
  width: 100%; padding: 13px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-family: inherit; font-size: 1rem; margin-bottom: 16px; background: #fff; color: var(--text);
}
.form-o input:focus, .form-o textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.form-o button {
  width: 100%; background: var(--cta); color: #fff; border: 0; border-radius: 999px;
  padding: 16px; font-size: 1.05rem; font-weight: 700; font-family: inherit; cursor: pointer;
}
.form-o button:hover { background: var(--cta-dark); }
.form-o button:disabled { opacity: .6; cursor: default; }
.bay-bot { position: absolute; left: -9999px; }
.ket-qua { margin-top: 14px; font-size: .97rem; }
.ket-qua.ok { color: var(--accent-dark); font-weight: 600; }
.ket-qua.loi { color: var(--do); }
.form-ghi { font-size: .88rem; color: var(--muted); text-align: center; margin: 14px 0 0; }

/* ---------- Hỏi đáp ---------- */
.hd { border-bottom: 1px solid var(--line); }
.hd summary {
  cursor: pointer; list-style: none; padding: 16px 34px 16px 0; position: relative;
  font-weight: 600; color: var(--primary);
}
.hd summary::-webkit-details-marker { display: none; }
.hd summary::after {
  content: "+"; position: absolute; right: 6px; top: 13px; font-size: 1.4rem;
  color: var(--accent); font-weight: 400;
}
.hd[open] summary::after { content: "–"; }
.hd p { padding: 0 0 16px; color: var(--muted); margin: 0; }

/* ---------- Chốt cuối + chân trang ---------- */
.cuoi-gach { display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: center; margin: 22px 0 28px; }
.cuoi-gach span { position: relative; padding-left: 22px; color: #cbdbcf; }
.cuoi-gach span::before { content: "✓"; position: absolute; left: 0; color: #8FD3A3; }
.chan { background: #16281d; color: #9fb3a5; text-align: center; padding: 30px 0; font-size: .9rem; }
.chan a { color: #cfe0d4; }

/* ---------- Thanh đăng ký luôn hiện ---------- */
.thanh {
  position: fixed; right: 22px; bottom: 22px; z-index: 60;
  display: flex; gap: 10px; align-items: center;
}
.thanh a { text-decoration: none; }
.thanh .thanh-zalo {
  background: #fff; color: var(--primary); border: 1px solid var(--line);
  padding: 14px 20px; border-radius: 999px; font-weight: 700; box-shadow: var(--shadow);
}

@media (max-width: 900px) {
  .luoi-3, .buoc-hang, .ts, .hop, .dd, .gv, .gv-so { grid-template-columns: 1fr; }
  .gv-so { grid-template-columns: repeat(3, 1fr); }
  .gv-anh { max-width: 280px; margin: 0 auto; }
}
@media (max-width: 640px) {
  body { padding-bottom: 76px; }
  h1 { font-size: 1.95rem; }
  .dau h1 { font-size: 2rem; }
  h2 { font-size: 1.45rem; }
  section { padding: 44px 0; }
  .gia-uu { font-size: 2.35rem; }
  .gv-so { grid-template-columns: 1fr; }
  .lt { flex-direction: column; gap: 4px; }
  .lt-so { flex: none; }
  .nut, .nut-lon { width: 100%; padding: 17px 20px; font-size: 1rem; }
  /* Điện thoại: thanh dính đáy, hai nút chia đôi */
  .thanh {
    left: 0; right: 0; bottom: 0; padding: 10px 12px; gap: 10px;
    background: rgba(255,255,255,.97); border-top: 1px solid var(--line);
    box-shadow: 0 -4px 16px rgba(0,0,0,.08);
  }
  .thanh .nut { flex: 1 1 auto; text-align: center; padding: 15px 10px; box-shadow: none; }
  .thanh .thanh-zalo { flex: 0 0 auto; padding: 15px 18px; box-shadow: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .nut { transition: none; }
}
@media print {
  .thanh { display: none; }
  .hd p { display: block; }
}