:root {
  --ink: #111827;
  --muted: #7c889d;
  --line: rgba(116, 134, 163, 0.18);
  --panel: rgba(255, 255, 255, 0.58);
  --panel-strong: rgba(255, 255, 255, 0.72);
  --accent: #6f82aa;
  --accent-strong: #5e7197;
  --shadow: 0 28px 80px rgba(70, 88, 119, 0.14);
  --page-pad: clamp(12px, 2.2vw, 24px);
}
* { box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body {
  margin: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #eef4fb url("data:image/svg+xml;base64,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") center/cover fixed no-repeat;
  overflow-x: hidden;
}
button, input { font: inherit; }
button { -webkit-tap-highlight-color: transparent; }
.page {
  height: 100dvh;
  min-height: 0;
  padding: var(--page-pad);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.mail-app {
  width: min(1380px, 100%);
  height: min(820px, 100%);
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(340px, 0.82fr) minmax(520px, 1.55fr);
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(255,255,255,.82);
  border-radius: 34px;
  background: rgba(255,255,255,.25);
  box-shadow: 0 40px 120px rgba(83, 102, 132, 0.12), inset 0 1px rgba(255,255,255,.8);
  backdrop-filter: blur(26px) saturate(120%);
  -webkit-backdrop-filter: blur(26px) saturate(120%);
}
.glass-panel {
  border: 1px solid rgba(255,255,255,.88);
  background: linear-gradient(145deg, rgba(255,255,255,.72), rgba(255,255,255,.38));
  box-shadow: var(--shadow), inset 0 1px rgba(255,255,255,.92);
  backdrop-filter: blur(24px) saturate(118%);
  -webkit-backdrop-filter: blur(24px) saturate(118%);
}
.inbox-panel {
  border-radius: 26px;
  padding: 22px;
  display: flex;
  min-width: 0;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
}
.mailbox-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}
.brand-row { display: flex; align-items: center; gap: 14px; min-width: 0; }
.mailbox-mark { width: 50px; height: 50px; flex: 0 0 auto; filter: drop-shadow(0 8px 18px rgba(76, 94, 126, .12)); }
.mailbox-meta { min-width: 0; }
.mail-address-row { display: flex; align-items: center; gap: 4px; min-width: 0; }
.mail-address-row strong {
  display: block;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.015em;
}
.mailbox-meta > span { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
.mailbox-meta > span:empty { display: none; }
.icon-button {
  width: 42px;
  height: 42px;
  border: 1px solid rgba(133, 149, 174, .14);
  border-radius: 13px;
  background: rgba(255,255,255,.46);
  box-shadow: inset 0 1px rgba(255,255,255,.92), 0 7px 22px rgba(74,91,118,.07);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: .2s ease;
}
.icon-button:hover { transform: translateY(-1px); background: rgba(255,255,255,.74); }
.icon-button:active { transform: translateY(0) scale(.97); }
.icon-button img { width: 22px; height: 22px; }
.icon-button.micro { width: 28px; height: 28px; border: 0; box-shadow: none; background: transparent; border-radius: 9px; }
.icon-button.micro img { width: 18px; height: 18px; }
.refresh-button.is-spinning img { animation: spin .7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.search-box {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid rgba(118, 136, 165, .16);
  border-radius: 14px;
  background: rgba(255,255,255,.5);
  padding: 0 14px;
  box-shadow: inset 0 1px rgba(255,255,255,.95), 0 9px 30px rgba(83,103,135,.06);
  margin-bottom: 16px;
}
.search-box img { width: 20px; height: 20px; opacity: .88; }
.search-box input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--ink); font-size: 14px; }
.search-box input::placeholder { color: #9aa6b8; }
.message-list {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: thin;
  scrollbar-color: rgba(126,141,165,.28) transparent;
}
.message {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 18px;
  background: rgba(255,255,255,.2);
  padding: 14px;
  display: grid;
  grid-template-columns: 44px minmax(0,1fr) auto;
  gap: 12px;
  align-items: center;
  text-align: left;
  cursor: pointer;
  color: inherit;
  transition: .2s ease;
}
.message:hover { background: rgba(255,255,255,.52); transform: translateX(2px); }
.message:focus-visible { outline: 2px solid rgba(104,126,166,.42); outline-offset: 2px; }
.message.is-unread .msg-copy strong,
.message.is-unread .msg-copy b { color: #182235; }
.message.has-code .msg-icon {
  background: linear-gradient(145deg, rgba(245,248,255,.95), rgba(220,231,252,.72));
  border-color: rgba(133,153,194,.24);
}
.message.active {
  border-color: rgba(116, 134, 170, .22);
  background: linear-gradient(135deg, rgba(242,247,255,.92), rgba(226,235,249,.62));
  box-shadow: inset 3px 0 0 #8296bd, 0 14px 30px rgba(73,90,118,.08);
}
.msg-icon {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(255,255,255,.9);
  box-shadow: 0 7px 20px rgba(75,92,122,.08);
}
.msg-icon img { width: 25px; height: 25px; }
.msg-copy { min-width: 0; }
.msg-copy strong { display: block; font-size: 14px; font-weight: 650; margin-bottom: 4px; }
.msg-copy b { display: block; font-size: 14px; font-weight: 580; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-bottom: 4px; }
.msg-copy span { display: block; font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg-state { align-self: start; display: grid; justify-items: end; gap: 8px; min-width: 76px; color: #93a0b4; font-size: 11px; white-space: nowrap; }
.msg-time { color: #98a4b7; font-size: 11px; line-height: 1.2; }
.msg-badges { min-height: 18px; display: inline-flex; align-items: center; justify-content: flex-end; gap: 7px; }
.code-badge {
  display: inline-flex;
  align-items: center;
  height: 18px;
  padding: 0 7px;
  border-radius: 99px;
  background: rgba(116, 139, 185, .14);
  color: #667da9;
  font-size: 10px;
  font-weight: 650;
  line-height: 1;
}
.unread-dot { width: 7px; height: 7px; border-radius: 99px; background: #7890bc; box-shadow: 0 0 0 5px rgba(120,144,188,.08); }
.message.empty { display: block; color: var(--muted); text-align: center; padding: 28px; cursor: default; }
.inbox-foot { margin-top: auto; padding-top: 16px; text-align: center; color: #9aa6b8; font-size: 12px; }
.reader-panel {
  border-radius: 26px;
  min-width: 0;
  min-height: 0;
  padding: clamp(22px, 2.6vw, 32px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.reader-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; }
.sender-line { display: flex; align-items: center; gap: 14px; min-width: 0; }
.sender-icon {
  width: 52px; height: 52px; border-radius: 18px;
  display: grid; place-items: center;
  background: linear-gradient(145deg, rgba(255,255,255,.92), rgba(230,237,249,.68));
  border: 1px solid rgba(255,255,255,.95);
  box-shadow: 0 12px 28px rgba(78,94,123,.09);
}
.sender-icon img { width: 27px; height: 27px; }
.sender-copy { min-width: 0; }
.sender-copy strong { display: block; font-size: 15px; margin-bottom: 4px; }
.sender-copy span { display: block; font-size: 13px; color: #69758a; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sender-copy small { display: block; margin-top: 4px; font-size: 12px; color: #9aa4b3; }
.reader-time { margin-left: auto; color: #98a4b7; font-size: 13px; white-space: nowrap; padding-top: 2px; }
.divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(110,126,153,.16) 10%, rgba(110,126,153,.16) 90%, transparent); margin: 18px 0; }
.mail-body { width: min(720px, 100%); flex: 1 1 auto; min-height: 0; margin: 0 auto; padding: 2px 2px 12px; overflow: auto; scrollbar-width: thin; scrollbar-color: rgba(126,141,165,.24) transparent; }
.mail-body h1 { margin: 0 0 20px; font-size: clamp(29px, 3.2vw, 44px); font-family: Georgia, "Times New Roman", serif; font-weight: 500; letter-spacing: -0.035em; }
.mail-body p { margin: 0 0 16px; color: #586579; line-height: 1.72; font-size: 15px; overflow-wrap: anywhere; }
.code-card {
  margin: 24px 0 18px;
  padding: clamp(24px, 3.2vw, 38px);
  border: 1px solid rgba(255,255,255,.92);
  border-radius: 26px;
  background: linear-gradient(145deg, rgba(255,255,255,.72), rgba(242,246,252,.4));
  box-shadow: inset 0 1px rgba(255,255,255,.98), 0 26px 60px rgba(76,92,120,.08);
  text-align: center;
}
.eyebrow { display: block; color: #8794a8; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; margin-bottom: 12px; }
.code-value {
  border: 0; background: transparent; color: #121b2c; cursor: pointer;
  display: block; width: 100%;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(46px, 6.8vw, 68px);
  letter-spacing: .24em;
  text-indent: .24em;
  line-height: 1.15;
  font-weight: 520;
  margin-bottom: 20px;
  transition: .2s ease;
}
.code-value:hover { transform: scale(1.012); }
.copy-code {
  width: min(320px, 100%);
  height: 50px;
  border: 1px solid rgba(255,255,255,.74);
  border-radius: 16px;
  background: linear-gradient(180deg, #7d90b8, #697ea8);
  box-shadow: inset 0 1px rgba(255,255,255,.36), 0 14px 36px rgba(81,102,145,.24);
  color: white;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  font-weight: 600;
  transition: .2s ease;
}
.copy-code:hover { transform: translateY(-2px); box-shadow: inset 0 1px rgba(255,255,255,.36), 0 18px 42px rgba(81,102,145,.28); }
.copy-code:active { transform: translateY(0) scale(.985); }
.copy-code img { width: 22px; height: 22px; }
.code-note { display: block; margin-top: 14px; color: #9aa6b8; font-size: 11px; }
.mail-note { padding-top: 16px; border-top: 1px solid rgba(118,134,158,.12); }
.mail-note:empty { display: none; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 18px);
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 11px 15px;
  border: 1px solid rgba(255,255,255,.92);
  border-radius: 14px;
  background: rgba(248,252,250,.78);
  color: #4d8b6d;
  box-shadow: 0 16px 40px rgba(64,89,77,.12);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: .25s ease;
  z-index: 99;
  font-size: 13px;
  font-weight: 600;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast img { width: 18px; height: 18px; }
@media (max-width: 900px) {
  .page { padding: 10px; }
  .mail-app { height: 100%; grid-template-columns: 1fr; grid-template-rows: minmax(174px, 34%) minmax(0, 1fr); border-radius: 28px; padding: 10px; overflow: hidden; }
  .inbox-panel { max-height: none; }
  .reader-panel { min-height: 0; }
}
@media (max-width: 560px) {
  .page { padding: 8px; align-items: stretch; }
  .mail-app { border-radius: 24px; gap: 10px; }
  .inbox-panel, .reader-panel { border-radius: 20px; padding: 16px; }
  .mailbox-mark { width: 44px; height: 44px; }
  .reader-head { align-items: center; }
  .reader-time { font-size: 12px; }
  .sender-icon { width: 46px; height: 46px; border-radius: 15px; }
  .sender-copy small { display: none; }
  .mail-body h1 { font-size: 30px; }
  .code-card { padding: 28px 16px; }
  .code-value { font-size: clamp(40px, 14vw, 58px); letter-spacing: .14em; text-indent: .14em; }
}