/* WeTransform Popup tặng khóa Udemy */
.wtup, .wtup *, .wtup-tab { box-sizing: border-box; }
.wtup [hidden], .wtup[hidden], .wtup-tab[hidden] { display: none !important; }
html.wtup-lock { overflow: hidden; }

.wtup {
  --wtup-navy: #14213d;
  --wtup-blue: #3659e3;
  --wtup-orange: #fca311;
  --wtup-ink: #1f2937;
  --wtup-muted: #6b7280;
  --wtup-line: #e5e7eb;
  position: fixed; inset: 0; z-index: 999990;
  display: flex; align-items: center; justify-content: center; padding: 16px;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--wtup-ink);
}
.wtup-backdrop {
  position: absolute; inset: 0; background: rgba(20, 33, 61, .62);
  opacity: 0; transition: opacity .2s ease;
}
.wtup-dialog {
  position: relative; display: grid; grid-template-columns: 5fr 6fr;
  width: 100%; max-width: 780px; max-height: calc(100vh - 32px); overflow: auto;
  background: #fff; border-radius: 16px; box-shadow: 0 24px 60px rgba(0, 0, 0, .28);
  opacity: 0; transform: translateY(16px) scale(.98); transition: opacity .2s ease, transform .2s ease;
}
.wtup-in .wtup-backdrop { opacity: 1; }
.wtup-in .wtup-dialog { opacity: 1; transform: none; }

.wtup-x {
  position: absolute; top: 10px; right: 12px; z-index: 2;
  width: 34px; height: 34px; border: 0; border-radius: 50%; padding: 0;
  background: transparent; color: var(--wtup-muted); font-size: 26px; line-height: 34px; cursor: pointer;
}
.wtup-x:hover { background: #f3f4f6; color: var(--wtup-ink); }

.wtup-side {
  background: var(--wtup-navy); color: #fff; padding: 36px 30px;
  background-image: radial-gradient(circle at 100% 0, rgba(54, 89, 227, .55), transparent 55%), radial-gradient(circle at 0 100%, rgba(252, 163, 17, .25), transparent 50%);
  display: flex; flex-direction: column; justify-content: center;
}
.wtup-badge {
  align-self: flex-start; background: var(--wtup-orange); color: var(--wtup-navy);
  font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px; margin-bottom: 16px;
}
.wtup-side h2 { margin: 0 0 12px; color: #fff; font-size: 26px; line-height: 1.25; font-weight: 800; }
.wtup-side p { margin: 0 0 18px; color: rgba(255, 255, 255, .82); font-size: 15px; }
.wtup-proof { font-size: 13px; color: rgba(255, 255, 255, .9); }
.wtup-stars { color: var(--wtup-orange); letter-spacing: 1px; }

.wtup-main { padding: 30px 28px 26px; }
.wtup-label { font-weight: 700; font-size: 14px; margin-bottom: 8px; }
.wtup-courses { display: grid; gap: 8px; margin-bottom: 16px; }
.wtup-course { display: block; cursor: pointer; margin: 0; }
.wtup-course input { position: absolute; opacity: 0; pointer-events: none; }
.wtup-course-box {
  display: block; position: relative; padding: 10px 12px 10px 40px;
  border: 1.5px solid var(--wtup-line); border-radius: 10px; transition: border-color .15s, background .15s;
}
.wtup-course-box::before {
  content: ""; position: absolute; left: 13px; top: 50%; width: 16px; height: 16px; margin-top: -8px;
  border: 2px solid #c7cbd4; border-radius: 50%; background: #fff;
}
.wtup-course-box strong { display: block; font-size: 15px; color: var(--wtup-navy); }
.wtup-course-box small { display: block; font-size: 13px; color: var(--wtup-muted); line-height: 1.35; }
.wtup-course:hover .wtup-course-box { border-color: #b8c4f5; }
.wtup-course input:checked + .wtup-course-box { border-color: var(--wtup-blue); background: #f2f5ff; }
.wtup-course input:checked + .wtup-course-box::before { border-color: var(--wtup-blue); box-shadow: inset 0 0 0 3px #fff; background: var(--wtup-blue); }
.wtup-course input:focus-visible + .wtup-course-box { outline: 2px solid var(--wtup-blue); outline-offset: 2px; }

.wtup-field { margin-bottom: 10px; }
.wtup-field input {
  width: 100%; height: 44px; padding: 0 14px; margin: 0;
  border: 1.5px solid var(--wtup-line); border-radius: 10px; background: #fff;
  font: inherit; color: var(--wtup-ink); box-shadow: none;
}
.wtup-field input:focus { outline: none; border-color: var(--wtup-blue); box-shadow: 0 0 0 3px rgba(54, 89, 227, .15); }
.wtup-hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; opacity: 0; }
.wtup-consent { display: flex; gap: 8px; align-items: flex-start; font-size: 12.5px; color: var(--wtup-muted); line-height: 1.4; margin: 4px 0 10px; cursor: pointer; }
.wtup-consent input { margin: 2px 0 0; flex: none; }
.wtup-error { color: #c5162e; font-size: 13px; min-height: 0; margin-bottom: 6px; }
.wtup-error:empty { display: none; }

.wtup-submit, .wtup-go {
  display: block; width: 100%; height: 48px; border: 0; border-radius: 10px; cursor: pointer;
  background: var(--wtup-blue); color: #fff !important; font: inherit; font-weight: 700; font-size: 16px;
  text-align: center; line-height: 48px; text-decoration: none !important; transition: background .15s, transform .05s;
}
.wtup-submit:hover, .wtup-go:hover { background: #2846c4; }
.wtup-submit:active { transform: translateY(1px); }
.wtup-submit:disabled { opacity: .7; cursor: wait; }
.wtup-loading { color: transparent !important; position: relative; }
.wtup-loading::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 20px; height: 20px; margin: -10px 0 0 -10px;
  border: 2.5px solid rgba(255, 255, 255, .5); border-top-color: #fff; border-radius: 50%; animation: wtup-spin .7s linear infinite;
}
@keyframes wtup-spin { to { transform: rotate(360deg); } }

.wtup-done { text-align: center; padding: 18px 4px 4px; }
.wtup-check {
  width: 56px; height: 56px; margin: 0 auto 14px; border-radius: 50%;
  background: #e3f5ec; color: #12805c; font-size: 28px; line-height: 56px; font-weight: 700;
}
.wtup-done h3 { margin: 0 0 8px; font-size: 21px; line-height: 1.3; font-weight: 800; color: var(--wtup-navy); }
.wtup-done-text { margin: 0 0 18px; color: var(--wtup-muted); }
.wtup-exp { font-size: 13px; color: var(--wtup-muted); margin: 10px 0 0; }
.wtup-exp:empty { display: none; }
.wtup-next { display: inline-block; margin-top: 18px; font-size: 14px; color: var(--wtup-blue); }

.wtup-tab {
  position: fixed; left: 16px; bottom: 16px; z-index: 999980;
  border: 0; border-radius: 999px; padding: 10px 16px; cursor: pointer;
  background: #14213d; color: #fff; font: 600 14px/1.2 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  box-shadow: 0 8px 24px rgba(20, 33, 61, .3);
}
.wtup-tab:hover { background: #3659e3; }
.wtup-open-btn {
  display: inline-block; background: #3659e3; color: #fff !important; text-decoration: none !important;
  padding: 12px 22px; border-radius: 10px; font-weight: 700;
}

@media (max-width: 640px) {
  .wtup { align-items: flex-end; padding: 0; }
  .wtup-dialog {
    grid-template-columns: 1fr; max-height: 92vh; border-radius: 18px 18px 0 0;
    transform: translateY(40px);
  }
  .wtup-side { padding: 18px 20px 16px; }
  .wtup-side h2 { font-size: 20px; padding-right: 34px; margin-bottom: 6px; }
  .wtup-side p { display: none; }
  .wtup-proof { font-size: 12.5px; }
  .wtup-badge { margin-bottom: 8px; font-size: 11px; }
  .wtup-course-box { padding: 8px 12px 8px 40px; }
  .wtup-course-box small { font-size: 12.5px; }
  .wtup-courses { gap: 6px; margin-bottom: 12px; }
  .wtup-field input { height: 42px; }
  .wtup-x { color: rgba(255, 255, 255, .8); }
  .wtup-x:hover { background: rgba(255, 255, 255, .12); color: #fff; }
  .wtup-success .wtup-x { color: var(--wtup-muted); }
  .wtup-success .wtup-side { display: none; }
  .wtup-main { padding: 18px 20px 22px; }
  .wtup-field input { font-size: 16px; } /* tránh iPhone tự phóng to */
  .wtup-tab { left: 12px; bottom: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .wtup-dialog, .wtup-backdrop { transition: none; }
}