/* Desktop freeze: center only the existing Choose file text; no other desktop layout changes. */
@media (min-width: 761px) {
  .upload-button {
    position: relative !important;
  }
  .upload-button-text {
    position: absolute !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    transform: none !important;
    margin: 0 !important;
    padding: 0 !important;
    line-height: 1 !important;
    text-align: center !important;
    pointer-events: none !important;
  }
}

.menu-toggle { display: none; }
/*
 * AcadMates mobile responsive layer — v1.4.8
 * Mobile-only overrides. Desktop/tablet landscape layouts are intentionally untouched.
 */
@media (max-width: 760px) {
  html,
  body {
    width: 100% !important;
    height: auto !important;
    min-height: 100% !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    overscroll-behavior-y: auto !important;
    -webkit-text-size-adjust: 100%;
  }

  body {
    min-width: 0 !important;
  }

  .site-shell {
    width: 100% !important;
    height: auto !important;
    min-height: 100svh !important;
    max-height: none !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: visible !important;
  }

  .topbar {
    position: sticky !important;
    top: 0 !important;
    z-index: 100 !important;
    height: auto !important;
    min-height: 92px !important;
    padding: 8px 10px 7px !important;
    overflow: visible !important;
    background: rgba(255, 251, 246, .96) !important;
    backdrop-filter: blur(16px) !important;
    -webkit-backdrop-filter: blur(16px) !important;
    border-bottom: 1px solid rgba(24, 35, 63, .08) !important;
  }

  .topbar-inner {
    width: 100% !important;
    height: auto !important;
    display: grid !important;
    grid-template-columns: 1fr !important;
    grid-template-rows: 34px 43px !important;
    gap: 6px !important;
    align-items: center !important;
  }

  .brand {
    justify-self: center !important;
    min-width: 0 !important;
  }

  .brand img {
    width: 30px !important;
    height: 30px !important;
  }

  .brand-copy strong {
    font-size: 13px !important;
  }

  .brand-copy small {
    display: inline !important;
    font-size: 7px !important;
  }

  .menu {
    width: 100% !important;
    height: 43px !important;
    margin: 0 !important;
    padding: 3px !important;
    display: flex !important;
    align-items: stretch !important;
    gap: 4px !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
    scroll-snap-type: x proximity;
  }

  .menu::-webkit-scrollbar {
    display: none !important;
  }

  .menu a {
    flex: 0 0 auto !important;
    width: auto !important;
    min-width: 82px !important;
    height: 37px !important;
    padding: 0 12px !important;
    font-size: 10.5px !important;
    border-radius: 999px !important;
    scroll-snap-align: center;
  }

  .main {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    flex: 1 0 auto !important;
    display: block !important;
    padding: 10px !important;
    overflow: visible !important;
  }

  .frame {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    border-radius: 26px !important;
    overflow: visible !important;
  }

  .frame-grid,
  .page-layout,
  .purchase-layout {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: visible !important;
  }

  .footer {
    width: 100% !important;
    height: auto !important;
    min-height: 38px !important;
    padding: 8px 14px calc(8px + env(safe-area-inset-bottom)) !important;
    overflow: visible !important;
  }

  .footer-inner {
    min-height: 22px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 4px !important;
    text-align: center !important;
    font-size: 8.5px !important;
  }

  .footer-inner span:last-child {
    display: none !important;
  }

  h1 {
    font-size: clamp(36px, 10vw, 48px) !important;
    line-height: .98 !important;
  }

  h2 {
    font-size: clamp(28px, 8.2vw, 38px) !important;
    line-height: 1 !important;
  }

  .lead {
    font-size: 14px !important;
    line-height: 1.48 !important;
  }

  .eyebrow {
    font-size: 9px !important;
    line-height: 1.2 !important;
  }

  .btn {
    min-height: 46px !important;
    padding: 0 18px !important;
    font-size: 12px !important;
  }

  /* Home */
  .home-grid {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 18px !important;
    padding: 22px 18px 26px !important;
    text-align: left !important;
  }

  .hero-copy {
    width: 100% !important;
    max-width: none !important;
    margin: 0 !important;
    text-align: left !important;
  }

  .hero-copy .lead {
    max-width: none !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .actions {
    width: 100% !important;
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 9px !important;
    justify-content: stretch !important;
  }

  .actions .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  .pill-row {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: flex-start !important;
    gap: 6px !important;
  }

  .pill {
    font-size: 9px !important;
    padding: 7px 9px !important;
  }

  .macaron-stage {
    width: 100% !important;
    height: 300px !important;
    min-height: 300px !important;
    margin: 0 auto !important;
  }

  .app-window {
    width: min(82%, 340px) !important;
  }

  .macaron {
    width: 112px !important;
    height: 54px !important;
    font-size: 7.5px !important;
  }

  .aqua-orb {
    width: 58px !important;
    height: 58px !important;
  }

  /* Downloads */
  .page-layout {
    padding: 20px 16px 24px !important;
    gap: 16px !important;
  }

  .page-head {
    display: block !important;
    text-align: left !important;
  }

  .page-head p {
    display: block !important;
    margin-top: 8px !important;
    font-size: 13px !important;
    line-height: 1.5 !important;
  }

  .download-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }

  .download-card {
    min-height: 0 !important;
    padding: 18px !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    border-radius: 24px !important;
  }

  .platform-top {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 10px !important;
  }

  .platform-icon {
    width: 48px !important;
    height: 48px !important;
    border-radius: 15px !important;
  }

  .recommend {
    display: inline-flex !important;
    font-size: 7px !important;
  }

  .download-card h2 {
    margin: 14px 0 7px !important;
    font-size: 27px !important;
  }

  .download-card p {
    max-width: none !important;
    margin: 0 0 14px !important;
    white-space: normal !important;
    overflow: visible !important;
    font-size: 12px !important;
    line-height: 1.45 !important;
  }

  .download-meta {
    width: 100% !important;
    margin-top: 0 !important;
    padding-top: 12px !important;
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 9px !important;
    justify-items: stretch !important;
    border-top: 1px solid rgba(24, 35, 63, .12) !important;
  }

  .download-meta span {
    font-size: 8px !important;
  }

  .download-meta .btn {
    width: 100% !important;
  }

  /* Guide */
  .guide-grid {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 18px !important;
    padding: 20px 16px 24px !important;
    text-align: left !important;
  }

  .guide-copy {
    text-align: left !important;
  }

  .guide-copy .lead {
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .guide-copy .chapter-row {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
    margin-top: 16px !important;
  }

  .chapter {
    padding: 12px 13px !important;
  }

  .chapter b {
    font-size: 9px !important;
  }

  .chapter span {
    font-size: 11px !important;
  }

  .video-shell {
    width: 100% !important;
    margin: 0 !important;
    padding: 7px !important;
    border-radius: 22px !important;
  }

  .video-holder {
    width: 100% !important;
    aspect-ratio: 16 / 9 !important;
    border-radius: 16px !important;
  }

  .play {
    width: 58px !important;
    height: 58px !important;
  }

  .video-label {
    left: 14px !important;
    bottom: 12px !important;
    font-size: 7px !important;
  }

  /* Trial */
  .trial-grid {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 18px !important;
    padding: 20px 16px 24px !important;
    text-align: left !important;
  }

  .trial-copy {
    text-align: left !important;
  }

  .trial-copy .lead {
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .trial-copy ul {
    margin: 14px 0 16px !important;
    justify-content: flex-start !important;
  }

  .trial-copy li {
    font-size: 10px !important;
    padding: 7px 10px !important;
  }

  .trial-pack {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    padding: 0 !important;
  }

  .trial-graphic {
    width: 100% !important;
    max-width: 520px !important;
    height: auto !important;
    max-height: none !important;
    margin: 0 auto !important;
    object-fit: contain !important;
    transform: rotate(-2deg) !important;
  }

  /* Support */
  .support-grid {
    grid-template-columns: 1fr !important;
    grid-template-rows: auto auto !important;
    gap: 14px !important;
    padding: 20px 16px 24px !important;
    text-align: left !important;
  }

  .support-main {
    text-align: left !important;
  }

  .support-main .lead {
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .reminders {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
    margin-top: 14px !important;
  }

  .reminder {
    padding: 13px !important;
  }

  .reminder b {
    font-size: 11px !important;
  }

  .reminder span {
    font-size: 11px !important;
    line-height: 1.4 !important;
  }

  .contact-card {
    padding: 20px !important;
    border-radius: 24px !important;
  }

  .contact-card p {
    font-size: 12px !important;
    line-height: 1.5 !important;
  }

  .contact-card .btn {
    width: 100% !important;
    justify-content: center !important;
  }

  /* Payment — stack cleanly and use natural page scrolling on phones. */
  .purchase-layout {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    padding: 0 !important;
  }

  .purchase-panel {
    width: 100% !important;
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    border-radius: 24px !important;
    overflow: visible !important;
  }

  .purchase-summary,
  .purchase-form-panel {
    padding: 18px 16px !important;
  }

  .purchase-summary {
    display: block !important;
  }

  .purchase-summary .eyebrow,
  .form-head .eyebrow {
    width: fit-content !important;
    max-width: 100% !important;
    margin: 0 0 12px !important;
    padding: 8px 12px !important;
    gap: 7px !important;
    font-size: 8.5px !important;
    letter-spacing: .12em !important;
    white-space: nowrap !important;
  }

  .eyebrow-icon {
    width: 24px !important;
    height: 24px !important;
    font-size: 12px !important;
  }

  .purchase-summary h1 {
    margin: 0 0 10px !important;
    font-size: clamp(38px, 11vw, 48px) !important;
    line-height: .95 !important;
  }

  .purchase-summary .lead {
    display: block !important;
    margin: 0 0 12px !important;
    font-size: 13px !important;
    line-height: 1.42 !important;
  }

  .price-row {
    min-height: 0 !important;
    margin: 0 0 10px !important;
    padding: 12px 14px !important;
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
    gap: 12px !important;
    border-radius: 18px !important;
  }

  .price {
    flex: 0 0 auto !important;
    font-size: clamp(52px, 15vw, 64px) !important;
    line-height: .92 !important;
    padding: 0 !important;
  }

  .price-note {
    min-width: 0 !important;
    font-size: 11px !important;
    line-height: 1.3 !important;
  }

  .gcash-card {
    width: 100% !important;
    margin: 0 !important;
    padding: 12px !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) 124px !important;
    align-items: center !important;
    gap: 10px !important;
    border-radius: 18px !important;
  }

  .gcash-copy strong {
    margin-bottom: 8px !important;
    font-size: 12px !important;
  }

  .gcash-copy strong::before {
    width: 28px !important;
    height: 28px !important;
  }

  .gcash-details {
    gap: 4px !important;
    margin-bottom: 8px !important;
    font-size: 11px !important;
    line-height: 1.35 !important;
  }

  .gcash-details span:first-child {
    font-size: 11px !important;
  }

  .gcash-card .btn,
  .gcash-copy .btn {
    width: 100% !important;
    min-height: 40px !important;
    margin: 0 !important;
    padding: 0 10px !important;
    font-size: 10px !important;
  }

  .gcash-qr {
    width: 124px !important;
    justify-self: end !important;
  }

  .gcash-qr img {
    width: 124px !important;
    height: 124px !important;
    border-width: 4px !important;
    border-radius: 12px !important;
  }

  .gcash-qr figcaption {
    display: block !important;
    margin-top: 4px !important;
    font-size: 7.5px !important;
    line-height: 1.25 !important;
  }

  .benefit-grid {
    width: 100% !important;
    margin: 9px 0 0 !important;
    display: grid !important;
    grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
    gap: 6px !important;
  }

  .benefit {
    min-height: 38px !important;
    padding: 7px 8px !important;
    justify-content: flex-start !important;
    text-align: left !important;
    font-size: 9px !important;
  }

  .benefit::before {
    display: grid !important;
    width: 20px !important;
    height: 20px !important;
    font-size: 10px !important;
  }

  .device-note {
    width: 100% !important;
    margin: 8px 0 0 !important;
    padding: 9px 10px !important;
    display: flex !important;
    align-items: flex-start !important;
    gap: 8px !important;
    font-size: 9px !important;
    line-height: 1.35 !important;
  }

  .device-note::before {
    font-size: 18px !important;
  }

  .purchase-form-panel {
    overflow: visible !important;
    overscroll-behavior: auto !important;
    scrollbar-width: auto !important;
  }

  .purchase-form-panel form {
    display: block !important;
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
  }

  .form-head {
    margin-bottom: 16px !important;
  }

  .form-head .eyebrow {
    display: inline-flex !important;
  }

  .form-head h2 {
    margin: 0 !important;
    font-size: clamp(34px, 9.6vw, 43px) !important;
    line-height: .98 !important;
    white-space: normal !important;
  }

  .purchase-fields,
  .purchase-fields.upgrade-mode {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }

  .purchase-fields .field-block,
  #fieldKeyStage,
  #fieldEmail,
  #fieldUsername,
  #fieldOrderType,
  #upgradeWrap,
  #amount,
  .purchase-fields.upgrade-mode #fieldOrderType,
  .purchase-fields.upgrade-mode #upgradeWrap,
  .purchase-fields.upgrade-mode #amount {
    grid-column: 1 !important;
    width: 100% !important;
  }

  .purchase-fields label {
    margin-bottom: 5px !important;
    font-size: 11px !important;
  }

  .purchase-fields select,
  .field-shell {
    width: 100% !important;
    height: 48px !important;
    min-height: 48px !important;
    border-radius: 15px !important;
  }

  .purchase-fields select {
    padding: 0 13px !important;
    font-size: 13px !important;
  }

  .field-shell {
    padding: 0 13px !important;
    gap: 9px !important;
  }

  .field-shell input {
    font-size: 13px !important;
  }

  .amount-bar {
    min-height: 48px !important;
    padding: 10px 13px !important;
    border-radius: 15px !important;
    font-size: 12px !important;
    line-height: 1.3 !important;
  }

  .receipt-box {
    width: 100% !important;
    padding: 10px !important;
    border-radius: 16px !important;
  }

  .receipt-box > label {
    margin-bottom: 8px !important;
    font-size: 11px !important;
  }

  .upload-shell {
    width: 100% !important;
    min-height: 0 !important;
    padding: 13px !important;
    display: grid !important;
    grid-template-columns: 42px minmax(0, 1fr) !important;
    grid-template-rows: auto auto !important;
    gap: 8px 10px !important;
    align-items: center !important;
    border-radius: 14px !important;
  }

  .upload-icon {
    width: 42px !important;
    height: 42px !important;
    grid-row: 1 !important;
  }

  .upload-icon svg {
    width: 34px !important;
    height: 34px !important;
  }

  .upload-copy {
    min-height: 42px !important;
    justify-content: center !important;
  }

  .upload-copy strong {
    font-size: 11px !important;
    line-height: 1.25 !important;
  }

  .upload-copy span {
    margin-top: 3px !important;
    font-size: 9px !important;
    line-height: 1.25 !important;
  }

  .upload-button {
    grid-column: 1 / -1 !important;
    grid-row: 2 !important;
    width: 100% !important;
    height: 44px !important;
    min-height: 44px !important;
    margin: 0 !important;
    padding: 0 16px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    border-radius: 14px !important;
    font-size: 11px !important;
    line-height: 1 !important;
    text-align: center !important;
  }

  .upload-button-text {
    display: block !important;
    width: 100% !important;
    text-align: center !important;
    line-height: 1 !important;
  }

  .receipt-preview {
    max-width: 100% !important;
    max-height: 170px !important;
    margin-top: 8px !important;
  }

  .status-note {
    width: 100% !important;
    min-height: 44px !important;
    padding: 9px 11px !important;
    border-radius: 14px !important;
    font-size: 9.5px !important;
    line-height: 1.35 !important;
  }

  .purchase-actions {
    width: 100% !important;
    min-height: 0 !important;
    margin-top: 10px !important;
    display: block !important;
  }

  .purchase-actions .btn {
    width: 100% !important;
    min-height: 48px !important;
    justify-content: center !important;
    font-size: 12px !important;
  }

  .purchase-status {
    display: block !important;
    margin-top: 7px !important;
    font-size: 10px !important;
  }

  .qr-dialog {
    width: min(92vw, 400px) !important;
    padding: 20px 16px 16px !important;
  }

  .qr-dialog h3 {
    font-size: 25px !important;
  }

  .qr-dialog img {
    width: min(100%, 310px) !important;
  }

  /* Toasts */
  .toast {
    bottom: calc(14px + env(safe-area-inset-bottom)) !important;
    max-width: calc(100% - 24px) !important;
    font-size: 10px !important;
  }
}

/* Very small phones */
@media (max-width: 380px) {
  .menu a {
    min-width: 76px !important;
    padding: 0 10px !important;
    font-size: 10px !important;
  }

  .home-grid,
  .page-layout,
  .guide-grid,
  .trial-grid,
  .support-grid {
    padding-left: 14px !important;
    padding-right: 14px !important;
  }

  .purchase-summary,
  .purchase-form-panel {
    padding-left: 14px !important;
    padding-right: 14px !important;
  }

  .purchase-summary .eyebrow,
  .form-head .eyebrow {
    font-size: 7.8px !important;
    padding-left: 10px !important;
    padding-right: 10px !important;
  }

  .gcash-card {
    grid-template-columns: minmax(0, 1fr) 108px !important;
  }

  .gcash-qr,
  .gcash-qr img {
    width: 108px !important;
  }

  .gcash-qr img {
    height: 108px !important;
  }
}

/* Mobile visibility correction for Guide chapter labels. */
@media (max-width: 760px) {
  .guide-copy .chapter span {
    display: block !important;
    visibility: visible !important;
  }
}


/* v1.5.0 mobile-only burger menu. Desktop remains frozen. */
@media (max-width: 760px) {
  html, body {
    overflow-y: auto !important;
    overflow-x: hidden !important;
    height: auto !important;
    min-height: 100% !important;
    touch-action: pan-y !important;
    -webkit-overflow-scrolling: touch;
  }

  .site-shell {
    height: auto !important;
    min-height: 100svh !important;
    max-height: none !important;
    overflow: visible !important;
  }

  .topbar {
    min-height: 64px !important;
    height: auto !important;
    padding: 7px 10px !important;
    overflow: visible !important;
  }

  .topbar-inner {
    position: relative !important;
    width: 100% !important;
    height: auto !important;
    min-height: 48px !important;
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) auto !important;
    grid-template-rows: 1fr !important;
    align-items: center !important;
    gap: 10px !important;
  }

  .brand {
    justify-self: start !important;
  }

  .menu-toggle {
    display: inline-flex !important;
    width: 42px !important;
    height: 42px !important;
    padding: 0 !important;
    border: 1px solid rgba(24,35,63,.12) !important;
    border-radius: 13px !important;
    background: rgba(255,255,255,.96) !important;
    box-shadow: 0 8px 20px rgba(24,35,63,.08) !important;
    align-items: center !important;
    justify-content: center !important;
    flex-direction: column !important;
    gap: 4px !important;
    cursor: pointer !important;
    justify-self: end !important;
  }

  .menu-toggle span {
    display: block !important;
    width: 19px !important;
    height: 2px !important;
    border-radius: 999px !important;
    background: #1f2d6f !important;
    transition: transform .2s ease, opacity .16s ease !important;
  }

  .menu {
    position: absolute !important;
    top: calc(100% + 7px) !important;
    left: 0 !important;
    right: 0 !important;
    width: auto !important;
    height: auto !important;
    max-height: 72vh !important;
    margin: 0 !important;
    padding: 8px !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 6px !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    border: 1px solid rgba(24,35,63,.10) !important;
    border-radius: 18px !important;
    background: rgba(255,255,255,.985) !important;
    box-shadow: 0 18px 40px rgba(24,35,63,.16) !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transform: translateY(-7px) !important;
    transition: opacity .18s ease, transform .18s ease, visibility .18s ease !important;
    z-index: 120 !important;
  }

  .topbar-inner.menu-open .menu {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    transform: translateY(0) !important;
  }

  .menu a {
    width: 100% !important;
    min-width: 0 !important;
    height: 42px !important;
    min-height: 42px !important;
    padding: 0 14px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    flex: 0 0 auto !important;
    border-radius: 13px !important;
    font-size: 13px !important;
    white-space: nowrap !important;
  }

  .topbar-inner.menu-open .menu-toggle span:nth-child(1) { transform: translateY(6px) rotate(45deg) !important; }
  .topbar-inner.menu-open .menu-toggle span:nth-child(2) { opacity: 0 !important; }
  .topbar-inner.menu-open .menu-toggle span:nth-child(3) { transform: translateY(-6px) rotate(-45deg) !important; }

  .main, .frame, .frame-grid, .page-layout, .purchase-layout {
    height: auto !important;
    min-height: 0 !important;
    max-height: none !important;
    overflow: visible !important;
  }

  .footer {
    height: auto !important;
    min-height: 28px !important;
    overflow: visible !important;
  }
}

/* v1.5.6 filename-only receipt selection */
.receipt-box img,.receipt-box picture,.receipt-box canvas,.receipt-box video,.receipt-box .receipt-preview,.receipt-box #receiptPreview,.receipt-box [data-receipt-preview],.receipt-box [data-file-preview]{display:none!important;width:0!important;height:0!important;max-width:0!important;max-height:0!important;margin:0!important;padding:0!important;border:0!important;opacity:0!important;visibility:hidden!important;position:absolute!important;pointer-events:none!important}
.receipt-box{overflow:hidden!important}