/* Nút "Zalo Mini App" nổi (inc/tdd-mini-app.php): giữa nút liên hệ .td-contact (dưới) và nút "Sự kiện TDD" (trên). */
.tdd-zma {
  --tdd-zma-size: 58px;
  --tdd-zma-contact-size: 58px;
  --tdd-zma-blue: #0068ff; /* xanh Zalo */
  position: fixed;
  left: max(var(--tdd-zma-left, 20px), env(safe-area-inset-left, 0px));
  bottom: calc(max(var(--tdd-zma-contact-bottom, 24px), env(safe-area-inset-bottom, 0px)) + var(--tdd-zma-contact-size) + 20px);
  z-index: 1000;
  color: #14233c;
  font-family: inherit;
  text-align: left;
  transition: opacity 0.2s ease, visibility 0.2s;
}
/* Bảng liên hệ mở lên trên sẽ che chỗ này. */
body:has(.td-contact.is-open) .tdd-zma {
  visibility: hidden;
  opacity: 0;
}

.tdd-zma .tdd-zma__toggle {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--tdd-zma-size);
  height: var(--tdd-zma-size);
  min-height: 0;
  margin: 0;
  padding: 10px;
  border: 0;
  border-radius: 50%;
  background: var(--tdd-zma-blue);
  background-image: radial-gradient(circle at 28% 15%, #ffffff40, transparent 55%), linear-gradient(155deg, #ffffff12 30%, #00000030);
  color: #fff;
  box-shadow: 0 8px 20px #0003, 0 2px 4px #0002, inset 0 1px 1px #ffffff70, inset 0 -2px 3px #0002;
  isolation: isolate;
  overflow: visible;
  cursor: pointer;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1.3), box-shadow 0.3s ease;
}
/* Quầng sáng, sóng tỏa, vệt sáng lướt: giống hai nút bên dưới. */
.tdd-zma__toggle::before,
.tdd-zma__toggle::after {
  content: "";
  position: absolute;
  inset: -4px;
  z-index: -1;
  border-radius: 50%;
  opacity: 0;
  pointer-events: none;
}
.tdd-zma__toggle::before {
  inset: -14px;
  background: radial-gradient(circle, transparent 35%, var(--tdd-zma-blue) 48%, transparent 72%);
  animation: tdd-zma-glow 3.6s ease-in-out infinite;
}
.tdd-zma__toggle::after {
  border: 1px solid var(--tdd-zma-blue);
  animation: tdd-zma-ripple 3.6s ease-out infinite;
}
.tdd-zma__shine {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border-radius: inherit;
  pointer-events: none;
}
.tdd-zma__shine::before {
  content: "";
  position: absolute;
  inset: -30%;
  background: linear-gradient(110deg, transparent 35%, #ffffff08 40%, #ffffff50 50%, #ffffff08 60%, transparent 65%);
  transform: translateX(-110%);
  animation: tdd-zma-shine 7.2s ease-in-out infinite;
}
.tdd-zma.is-open .tdd-zma__toggle::before,
.tdd-zma.is-open .tdd-zma__toggle::after,
.tdd-zma.is-open .tdd-zma__shine::before {
  animation: none;
  opacity: 0;
}
@keyframes tdd-zma-ripple {
  0%, 12% { transform: scale(.98); opacity: 0; }
  20% { opacity: .35; }
  75%, 100% { transform: scale(1.5); opacity: 0; }
}
@keyframes tdd-zma-glow {
  0%, 100% { transform: scale(.94); opacity: .12; }
  45% { transform: scale(1.08); opacity: .28; }
}
@keyframes tdd-zma-shine {
  0%, 58% { transform: translateX(-110%); }
  78%, 100% { transform: translateX(110%); }
}
/* Icon mặc định: chữ "Zalo" + "Mini App". */
.tdd-zma__mark {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  color: #fff;
  line-height: 1;
  white-space: nowrap;
}
.tdd-zma__mark b {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.4px;
}
.tdd-zma__mark small {
  padding: 2px 4px;
  border-radius: 4px;
  background: #fff;
  color: var(--tdd-zma-blue);
  font-size: 7.5px;
  font-weight: 800;
  letter-spacing: .2px;
  text-transform: uppercase;
}
/* Icon tải lên. */
.tdd-zma .tdd-zma__img {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
/* "Icon tràn kín nút": ảnh phủ cả hình tròn. */
/* Nền nút = "Màu nút", nên đặt đúng màu nền của logo để mép tròn liền màu. */
.tdd-zma--fill .tdd-zma__toggle {
  padding: 0;
}
.tdd-zma--fill .tdd-zma__img {
  border-radius: 50%;
  object-fit: cover;
}
.tdd-zma--fill .tdd-zma__shine {
  z-index: 1;
}
@media (hover: hover) {
  .tdd-zma .tdd-zma__toggle:hover {
    transform: translateY(-3px) scale(1.04);
  }
}
.tdd-zma .tdd-zma__toggle:active {
  transform: scale(0.94);
}
.tdd-zma__toggle:focus-visible,
.tdd-zma__close:focus-visible,
.tdd-zma__open:focus-visible {
  outline: 3px solid #f5a623;
  outline-offset: 3px;
}

/* Nhãn: ẩn sẵn, chỉ hiện khi rê chuột hoặc tab tới nút. */
.tdd-zma__caption {
  position: absolute;
  left: calc(100% + 10px);
  width: max-content;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--tdd-zma-blue);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
  transition: opacity .2s ease, visibility .2s;
}
.tdd-zma__caption::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 100%;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-right: 7px solid var(--tdd-zma-blue);
  transform: translateY(-50%);
}
.tdd-zma:not(.is-open) .tdd-zma__toggle:hover .tdd-zma__caption,
.tdd-zma:not(.is-open) .tdd-zma__toggle:focus-visible .tdd-zma__caption {
  visibility: visible;
  opacity: 1;
}

/* Khung QR: mở sang phải, đáy ngang đáy nút, nên màn hình thấp vẫn đủ chỗ. */
.tdd-zma__panel {
  position: absolute;
  left: calc(100% + 12px);
  bottom: 0;
  width: min(260px, calc(100vw - var(--tdd-zma-left, 20px) - var(--tdd-zma-size) - 24px));
  padding: 14px;
  border: 1px solid #e3e9f2;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 44px rgb(10 25 60 / 22%);
  text-align: center;
  visibility: hidden;
  opacity: 0;
  transform: translateX(-12px);
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
}
.tdd-zma.is-open .tdd-zma__panel {
  visibility: visible;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}
.tdd-zma__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}
.tdd-zma__title {
  margin: 0;
  color: var(--tdd-zma-blue);
  font-size: 16px;
  font-weight: 800;
}
.tdd-zma .tdd-zma__close {
  width: 30px;
  height: 30px;
  min-height: 0;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: none;
  color: #5b6b82;
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.tdd-zma .tdd-zma__close:hover {
  background: #eef2f9;
}
.tdd-zma__frame {
  padding: 10px;
  border: 1px solid #e8edf4;
  border-radius: 12px;
  background: #fff;
}
.tdd-zma .tdd-zma__qr {
  display: block;
  width: 100%;
  max-width: 200px;
  height: auto;
  margin: 0 auto;
  aspect-ratio: 1;
  object-fit: contain;
}
.tdd-zma .tdd-zma__text {
  margin: 10px 0 0;
  color: #3d4c63;
  font-size: 13.5px;
  line-height: 1.45;
}
.tdd-zma .tdd-zma__open {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  padding: 10px;
  border-radius: 10px;
  background: var(--tdd-zma-blue);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}
.tdd-zma .tdd-zma__open:hover {
  background: #0052cc;
  color: #fff;
}
.tdd-zma__soon {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 18px 12px;
  border: 1px dashed #b9cdf0;
  border-radius: 12px;
  background: #f3f7ff;
  color: var(--tdd-zma-blue);
}
.tdd-zma__soon > svg {
  width: 56px;
  height: 56px;
  opacity: .8;
}
.tdd-zma .tdd-zma__soon p {
  margin: 0;
  color: #14233c;
  font-size: 15px;
  line-height: 1.45;
}
.tdd-zma__soon b {
  color: #153994;
}

@media (max-width: 549px) {
  .tdd-zma {
    --tdd-zma-size: 52px;
    --tdd-zma-contact-size: 52px;
  }
  .tdd-zma .tdd-zma__toggle {
    padding: 9px;
  }
  .tdd-zma__caption {
    display: none;
  }
}
@media (prefers-reduced-motion: reduce) {
  .tdd-zma,
  .tdd-zma .tdd-zma__toggle,
  .tdd-zma__panel {
    transition: none;
  }
  .tdd-zma__toggle::before,
  .tdd-zma__toggle::after,
  .tdd-zma__shine::before {
    animation: none !important;
  }
}

/* Mã QR có liên kết: bấm vào mở Mini App. */
.tdd-zma a.tdd-zma__frame {
  display: block;
  transition: border-color .2s, box-shadow .2s;
}
.tdd-zma a.tdd-zma__frame:hover {
  border-color: var(--tdd-zma-blue);
  box-shadow: 0 4px 14px rgb(0 104 255 / 18%);
}
.tdd-zma a.tdd-zma__frame:focus-visible {
  outline: 3px solid #f5a623;
  outline-offset: 3px;
}

/* Icon tải lên, không tràn nút: thu hẹp lề để icon đủ lớn; nền nút = "Màu nút". */
.tdd-zma--img .tdd-zma__toggle {
  padding: 7px;
}
@media (max-width: 549px) {
  .tdd-zma--img .tdd-zma__toggle {
    padding: 6px;
  }
}