:root{
  --tf-brown:#8b715a;      /* header brown */
  --tf-brown-dark:#7a624f;
  --tf-card:#faefe6;       /* card background */
  --tf-ink:#2f2a27;
  --tf-orange:#ffa368;     /* button */
  --tf-orange-dark:#ff9551;
  --tf-shadow: 0 18px 45px rgba(0,0,0,.28);
  --tf-radius: 26px;
}

/* overlay */
.tf-modal{
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease;
}
.tf-modal.is-open{
  opacity: 1;
  pointer-events: auto;
}
.tf-modal__backdrop{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.55);
}

/* dialog */
.tf-modal__dialog{
  position: relative;
  width: min(560px, calc(100vw - 28px));
  border-radius: var(--tf-radius);
  background: var(--tf-card);
  box-shadow: var(--tf-shadow);
  overflow: hidden;
  transform: translateY(10px) scale(.98);
  transition: transform .18s ease;
  outline: none;
}
.tf-modal.is-open .tf-modal__dialog{
  transform: translateY(0) scale(1);
}

/* header bar */
.tf-modal__header{
  background: var(--tf-brown);
  padding: 20px 22px 18px;
  text-align: center;
}
.tf-modal__title{
  margin: 0;
  color: #fff;
  font-weight: 800;
  letter-spacing: .12em;
  font-size: clamp(22px, 4vw, 30px);
}

/* body */
.tf-modal__body{
  padding: 26px 26px 28px;
  text-align: center;
  color: var(--tf-ink);
}
.tf-modal__desc{
  margin: 6px 0 18px;
  font-size: 18px;
  line-height: 1.7;
  letter-spacing: .02em;
}

/* button */
.tf-modal__btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(340px, 100%);
  height: 56px;
  border: 0;
  border-radius: 999px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .12em;
  color: #fff;
  background: linear-gradient(180deg, var(--tf-orange) 0%, var(--tf-orange-dark) 100%);
  box-shadow: 0 10px 18px rgba(255,149,81,.35);
  cursor: pointer;
  transition: transform .08s ease, filter .12s ease;
}
.tf-modal__btn:hover{ filter: brightness(1.02); }
.tf-modal__btn:active{ transform: translateY(1px); }

/* SVG ribbons */
.tf-ribbon{
  position: absolute;
  pointer-events: none;
  opacity: .95;
  filter: drop-shadow(0 10px 14px rgba(0,0,0,.18));
}
.tf-ribbon.r1{
  width: 64px;
  height: 64px;
  left: 18px;
  top: 64px;
  transform: rotate(-10deg);
}
.tf-ribbon.r2{
  width: 64px;
  height: 64px;
  right: 18px;
  top: 64px;
  transform: rotate(10deg);
}
.tf-ribbon.r3{
  width: 72px;
  height: 72px;
  left: 10px;
  bottom: 90px;
  transform: rotate(6deg);
}
.tf-ribbon.r4{
  width: 72px;
  height: 72px;
  right: 10px;
  bottom: 90px;
  transform: rotate(-6deg);
}

/* reduce motion */
@media (prefers-reduced-motion: reduce){
  .tf-modal, .tf-modal__dialog{ transition: none; }
}

/* body scroll lock helper */
.tf-scroll-lock{ overflow: hidden !important; }