.account-actions, .region-dialog {
  --background: #101215;
  --text: #f4f5f5;
  --muted: #a3a6aa;
  --quiet: #6d7177;
}

.account-actions { display: inline-flex; align-items: center; flex: none; gap: 10px; margin-left: auto; }
.account-button, :where(.region-dialog) button { font: inherit; cursor: pointer; }
.account-button { min-width: 88px; min-height: 44px; padding: 8px 19px; border: 1px solid #e6e8eb; border-radius: 999px; font-size: 15px; font-weight: 600; transition: background-color .18s ease; }
.account-button:focus-visible { position: relative; z-index: 1; outline: 2px solid #fff; outline-offset: -3px; }
.login-button { background: transparent; color: var(--text); }
.login-button:hover { background: rgba(255,255,255,.12); }
.register-button { background: var(--text); color: var(--background); }
.register-button:hover { background: #d6d8da; }
.register-button:focus-visible { outline-color: var(--background); }

.region-dialog { width: min(440px, calc(100% - 40px)); max-height: calc(100dvh - 40px); padding: 0; overflow-y: auto; overscroll-behavior: contain; border: 1px solid #4b5056; border-radius: 18px; background: #121519; color: var(--text); box-shadow: 0 30px 90px rgba(0,0,0,.48); }
.region-dialog::backdrop { background: rgba(0,0,0,.72); }
:where(.region-dialog) :focus-visible { outline: 2px solid var(--text); outline-offset: 5px; }
.dialog-inner { position: relative; padding: 38px; }
.region-dialog[data-landmark] .dialog-inner {
  background-image: linear-gradient(90deg, #121519 0%, rgba(18,21,25,.97) 38%, rgba(18,21,25,.8) 64%, rgba(18,21,25,.58) 100%), var(--landmark-art);
  background-position: center, right bottom;
  background-size: 100% 100%, 95% auto;
  background-repeat: no-repeat;
}
.region-dialog[data-landmark="great-wall"] .dialog-inner { --landmark-art: url('./great-wall-depth.svg'); }
.region-dialog[data-landmark="nagoya"] .dialog-inner { --landmark-art: url('./nagoya-castle-depth.svg'); }
.region-dialog[data-landmark="victoria-harbour"] .dialog-inner { --landmark-art: url('./victoria-harbour-depth.svg'); }
.region-dialog[data-landmark="grand-lisboa"] .dialog-inner { --landmark-art: url('./grand-lisboa-depth.svg'); }
.region-dialog[data-landmark="taipei-101"] .dialog-inner { --landmark-art: url('./taipei-101-depth.svg'); }
.region-dialog[data-landmark="myeongdong"] .dialog-inner { --landmark-art: url('./myeongdong-depth.svg'); }
.region-dialog[data-landmark="marina-bay"] .dialog-inner { --landmark-art: url('./marina-bay-depth.svg'); }
.region-dialog[data-landmark="london-bridge"] .dialog-inner { --landmark-art: url('./london-bridge-depth.svg'); }
.region-dialog[data-landmark="times-square"] .dialog-inner { --landmark-art: url('./times-square-depth.svg'); }
.dialog-close { position: absolute; top: 16px; right: 16px; width: 44px; height: 44px; display: grid; place-items: center; padding: 0; border: 0; background: transparent; color: var(--muted); }
.dialog-close:hover { color: var(--text); }
.close-icon, .search-icon { display: block; width: 20px; height: 20px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.region-dialog h2 { margin: 0 44px 15px 0; font-size: 28px; font-weight: 600; line-height: 1.3; }
.region-dialog p { margin: 0; color: #c3c6ca; font-size: 16px; line-height: 1.7; }
.region-picker[hidden], .region-unavailable[hidden], .region-list li[hidden], .region-empty[hidden] { display: none; }
.region-search { min-height: 46px; margin-top: 20px; padding: 0 14px; display: flex; align-items: center; gap: 10px; border: 1px solid #4b5056; border-radius: 10px; color: var(--muted); }
.region-search:focus-within { border-color: #b8c5d5; }
.region-search input { width: 100%; min-width: 0; padding: 11px 0; border: 0; outline: 0; background: transparent; color: var(--text); font: inherit; font-size: 15px; }
.region-search input::placeholder { color: var(--muted); }
.region-list { max-height: 340px; max-height: min(340px, calc(100dvh - 310px)); margin: 14px 0 0; padding: 0; overflow-y: auto; overscroll-behavior: contain; list-style: none; }
.province-list { max-height: 300px; max-height: min(300px, calc(100dvh - 355px)); }
.region-list li { margin: 2px 0; }
.region-option { width: 100%; min-height: 48px; padding: 7px 8px; display: flex; align-items: center; gap: 12px; border: 0; border-radius: 10px; background: transparent; color: var(--text); text-align: left; }
.province-list .region-option { padding-inline: 12px; }
.region-option:hover, .region-option:focus-visible { background: #222831; }
.region-option:focus-visible { outline-offset: -2px; }
.region-flag { width: 28px; height: 28px; flex: none; display: block; border: 1px solid rgba(255,255,255,.18); border-radius: 50%; background: #20252c; object-fit: cover; }
.region-name { min-width: 0; flex: 1; font-size: 15px; line-height: 1.35; }
.region-code { color: var(--quiet); font-size: 12px; letter-spacing: .04em; }
.region-dialog .region-empty { padding: 22px 0 4px; color: var(--muted); text-align: center; font-size: 14px; }
.selected-region { margin: 8px 0 18px; display: flex; align-items: center; gap: 12px; font-size: 18px; font-weight: 600; }
.selected-region .region-flag { width: 36px; height: 36px; }
.notice-clause { display: inline-block; max-width: 100%; white-space: nowrap; }
.region-actions { margin-top: 34px; display: flex; align-items: center; flex-wrap: wrap; gap: 12px 22px; }
.dialog-back { min-height: 45px; padding: 8px 0; border: 0; background: transparent; color: var(--muted); font-size: 15px; }
.province-back { display: block; margin-top: 12px; }
.dialog-back:hover { color: var(--text); }
.dialog-confirm { min-width: 118px; min-height: 45px; padding: 8px 20px; border: 1px solid var(--text); border-radius: 10px; background: var(--text); color: var(--background); font-size: 15px; }
.dialog-confirm:hover { background: #d6d8da; }

@media (max-width: 680px) {
  .dialog-inner { padding: 34px 26px 28px; }
  #region-description { font-size: 15px; }
}

@media (max-width: 480px) {
  .account-actions { gap: 8px; }
  .account-button { min-width: 64px; min-height: 44px; padding: 8px 14px; font-size: 14px; }
}

@media (max-width: 360px) {
  .region-dialog[data-landmark] .dialog-inner { background-size: 100% 100%, 100% auto; }
  .notice-clause { white-space: normal; }
}

@media (prefers-reduced-motion: reduce) {
  .account-button { transition: none; }
}