/* =========================================================
 * MUSK - CHỨNG NHẬN & TIÊU CHUẨN QUỐC TẾ
 * Nội dung theo Row/Column Flatsome, nền tràn full width
 * ========================================================= */

.musk-certifications {
  position: relative;
  z-index: 1;
  width: 100%;
  color: #10131c;
}

.musk-certifications,
.musk-certifications *,
.musk-certifications *::before,
.musk-certifications *::after {
  box-sizing: border-box;
}

/* =========================================================
 * LAYOUT TRONG COLUMN
 * ========================================================= */

.musk-certifications__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding: 100px 0px 50px 0px;
}

/* =========================================================
 * HEADER
 * ========================================================= */

.musk-certifications__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 45px;
  text-align: center;
}

.musk-certifications__header-description {
  max-width: 720px;
  margin: 10px auto 0;
  color: #29394f;
  font-weight: 400;
  line-height: 1.6;
}

/* =========================================================
 * SLIDER PANEL
 * ========================================================= */

.musk-certifications__slider {
  position: relative;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  width: 100%;
  min-height: 350px;
  padding: 30px 26px 62px;
  gap: 26px;
  overflow: hidden;
  border-radius: 14px;
  background:
    radial-gradient(circle at 8% 12%, rgba(15, 74, 226, 0.18), transparent 28%),
    linear-gradient(125deg, #030a54 0%, #020842 48%, #02063e 100%);
  color: #ffffff;
  isolation: isolate;
}

.musk-certifications__slider::before {
  content: "";
  position: absolute;
  bottom: -290px;
  left: -215px;
  z-index: 0;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(20, 92, 255, 0.32);
  border-radius: 50%;
  pointer-events: none;
}

.musk-certifications__slider::after {
  content: "";
  position: absolute;
  top: -175px;
  left: -70px;
  z-index: 0;
  width: 330px;
  height: 330px;
  border-right: 1px solid rgba(20, 92, 255, 0.28);
  border-radius: 50%;
  pointer-events: none;
}

/* =========================================================
 * CỘT TRÁI
 * ========================================================= */

.musk-certifications__intro {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
}

.musk-certifications__logo {
  display: block;
  width: 158px;
  max-width: 100%;
  height: auto;
  margin: 0;
  object-fit: contain;
  object-position: left center;
}

.musk-certifications__copy {
  margin-top: 44px;
}

.musk-certifications__copy.is-changing {
  animation: musk-certifications-copy-in 0.48s ease both;
}

.musk-certifications__active-title {
  position: relative;
  margin: 0;
  color: #ffffff;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.musk-certifications__active-description {
  min-height: 42px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 400;
  line-height: 1.55;
}

/* Nút cách hẳn phần chữ ra. Trước đây dính sát mô tả nên cột
   trái nhìn chật. */

.musk-certifications__copy .musk-btn {
  margin-top: 26px;
}

/* =========================================================
 * KHU VỰC SLIDER CARD
 * ========================================================= */

.musk-certifications__main {
  position: relative;
  z-index: 3;
  min-width: 0;
}

.musk-certifications__viewport {
  width: 100%;
  overflow: hidden;
  scroll-behavior: smooth;
  scrollbar-width: none;
}

.musk-certifications__viewport::-webkit-scrollbar {
  display: none;
}

.musk-certifications__track {
  display: flex;
  align-items: stretch;
  width: max-content;
  padding: 34px 8px 20px;
  gap: 16px;
}

/* =========================================================
 * CARD
 * ========================================================= */

.musk-certifications__card {
  position: relative;
  display: block !important;
  flex: 0 0 205px;
  width: 205px !important;
  min-width: 205px !important;
  min-height: 250px !important;
  margin: 0 !important;
  padding: 13px !important;
  overflow: hidden;
  border: 2px solid transparent !important;
  border-radius: 12px !important;
  background: #ffffff !important;
  color: #0d1e3a !important;
  line-height: 1 !important;
  box-shadow: 0 13px 32px rgba(0, 6, 35, 0.2) !important;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition:
    transform 0.35s ease,
    border-color 0.35s ease,
    box-shadow 0.35s ease,
    opacity 0.35s ease;
}

.musk-certifications__card::before,
.musk-certifications__card::after {
  display: none !important;
  content: none !important;
}

.musk-certifications__card.is-active {
  transform: translateY(-9px) scale(1.03);
  border-color: #e8c27a !important;
  box-shadow:
    0 24px 46px rgba(0, 6, 35, 0.4),
    0 0 0 4px rgba(232, 194, 122, 0.32) !important;
}

.musk-certifications__card-image {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-height: 220px;
}

.musk-certifications__card-image img {
  display: block;
  width: 100%;
  height: 100%;
  max-height: 220px;
  margin: 0;
  object-fit: contain;
  object-position: center;
  pointer-events: none;
  user-select: none;
  transition: transform 0.4s ease;
}

.musk-certifications__card:hover .musk-certifications__card-image img,
.musk-certifications__card.is-active .musk-certifications__card-image img {
  transform: scale(1.035);
}

/* =========================================================
 * NÚT ĐIỀU HƯỚNG
 * ========================================================= */

/* Căn giữa theo chiều ngang khu vực slider (cột phải), không
   phải theo cả panel. left/width khớp với grid-template-columns
   ở trên: cột trái 250px + gap 26px. */

.musk-certifications__controls {
  position: absolute;
  right: 26px;
  bottom: -46px;
  left: 276px;
  display: flex;
  justify-content: center;
  gap: 10px;
}

.musk-certifications__arrow {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 36px !important;
  min-width: 36px !important;
  height: 36px !important;
  min-height: 36px !important;
  margin: 0 !important;
  padding: 0 !important;
  border: 1px solid rgba(255, 255, 255, 0.28) !important;
  border-radius: 50% !important;
  background: rgba(0, 12, 56, 0.4) !important;
  color: #ffffff !important;
  box-shadow: none !important;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  transition:
    background-color 0.25s ease,
    border-color 0.25s ease,
    transform 0.25s ease;
}

.musk-certifications__arrow::before,
.musk-certifications__arrow::after {
  display: none !important;
  content: none !important;
}

.musk-certifications__arrow svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.musk-certifications__arrow:hover {
  border-color: rgba(255, 255, 255, 0.7) !important;
  background: rgba(0, 19, 80, 0.85) !important;
}

.musk-certifications__arrow:first-child:hover {
  transform: translateX(-3px);
}

.musk-certifications__arrow:last-child:hover {
  transform: translateX(3px);
}

/* =========================================================
 * FOCUS
 * ========================================================= */

.musk-certifications__card:focus-visible,
.musk-certifications__arrow:focus-visible {
  outline: 3px solid rgba(232, 194, 122, 0.62);
  outline-offset: 3px;
}

/* =========================================================
 * EMPTY
 * ========================================================= */

.musk-certifications__empty {
  padding: 40px 24px;
  color: rgba(255, 255, 255, 0.65);
  text-align: center;
}

/* =========================================================
 * COPY ANIMATION
 * ========================================================= */

@keyframes musk-certifications-copy-in {
  from {
    opacity: 0;
    transform: translateX(24px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@media (hover: hover) {
  .musk-certifications__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 19px 38px rgba(0, 6, 35, 0.3) !important;
  }
}

/* =========================================================
 * MOBILE
 * ========================================================= */

@media (max-width: 767px) {
  /* Bảng xếp dọc: chữ trên, slider dưới. Mọi thứ canh giữa. */

  .musk-certifications__slider {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 0;
    /* 60px đáy là dư thừa từ hồi nút điều hướng còn đặt
       absolute ở đáy panel. Giờ nút nằm trong luồng, dưới
       slider (position: static) nên không cần chừa chỗ riêng
       nữa - hai bên bằng nhau. */
    padding: 26px 18px;
    border-radius: 14px;
    gap: 0;
  }

  .musk-certifications__intro {
    align-items: center;
    width: 100%;
    text-align: center;
  }

  .musk-certifications__logo {
    width: 140px;
    object-position: center;
  }

  .musk-certifications__copy {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    margin-top: 22px;
  }

  .musk-certifications__active-description {
    min-height: 0;
    margin-top: 10px;
  }

  .musk-certifications__copy .musk-btn {
    margin-top: 20px;
  }

  .musk-certifications__main {
    width: 100%;
    margin-top: 28px;
  }

  .musk-certifications__inner {
    padding: 50px 0;
  }

  .musk-certifications__header {
    margin-bottom: 30px;
  }

  .musk-certifications__header-description {
    margin-top: 6px;
    font-size: 14px;
  }

  /* -------------------------------------------------------
   * SLIDER: ĐÚNG HAI THẺ MỖI LẦN TRƯỢT
   *
   * Mỗi thẻ chiếm nửa chiều rộng viewport trừ gap, nên trượt
   * một khấc là gọn đúng 2 thẻ, không cắt nửa thẻ thứ ba.
   * ------------------------------------------------------- */

  .musk-certifications__viewport {
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
  }

  .musk-certifications__track {
    gap: 12px;
    padding: 6px 0 4px;
  }

  /* Bề rộng thẻ do JS tính bằng px và ép !important qua
     setProperty (xem certifications.js, sizeMobileCards()).

     % không dùng được ở đây: track có width: max-content nên
     tự co theo nội dung, phần trăm trên flex-basis không giải
     được và trình duyệt coi như card co về đúng bề rộng nội
     dung của nó - ra đúng lỗi 1 cột thay vì 2. */

  .musk-certifications__card {
    flex: 0 0 auto;
    min-width: 0 !important;
    min-height: 0 !important;
    padding: 10px !important;
    border-radius: 12px !important;
    scroll-snap-align: start;
  }

  .musk-certifications__card-image {
    min-height: 0;
    aspect-ratio: 1 / 1;
  }

  .musk-certifications__card-image img {
    max-height: 100%;
  }

  .musk-certifications__card.is-active {
    transform: translateY(-4px) scale(1.02);
  }

  /* Nút điều hướng: dưới slider, canh giữa. */

  .musk-certifications__controls {
    position: static;
    justify-content: center;
    margin-top: 18px;
  }

  .musk-certifications__arrow {
    width: 38px !important;
    min-width: 38px !important;
    height: 38px !important;
    min-height: 38px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .musk-certifications *,
  .musk-certifications *::before,
  .musk-certifications *::after {
    scroll-behavior: auto !important;
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
}