:root {
  color-scheme: dark;
  --bg: #07101d;
  --surface: rgba(13, 26, 44, .82);
  --surface-2: rgba(19, 37, 59, .72);
  --line: rgba(183, 219, 255, .12);
  --text: #f4f8fc;
  --muted: #91a3b7;
  --mint: #6ef3cd;
  --aqua: #56c7ff;
  --danger: #ff8a9b;
  --shadow: 0 24px 80px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 50% -20%, rgba(51, 122, 162, .18), transparent 42%),
    linear-gradient(145deg, #07101d 0%, #091625 48%, #06111c 100%);
}

button, a { font: inherit; }
button { color: inherit; }
.hidden { display: none !important; }
.ambient { position: fixed; pointer-events: none; border-radius: 999px; filter: blur(95px); opacity: .22; }
.ambient-one { width: 360px; height: 360px; background: #2fd3ae; top: 12%; left: -220px; }
.ambient-two { width: 420px; height: 420px; background: #2774ff; right: -260px; bottom: -100px; }

.topbar {
  width: min(1180px, calc(100% - 40px));
  height: 86px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--text); text-decoration: none; font-size: 20px; font-weight: 750; letter-spacing: -.03em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid rgba(110,243,205,.55); border-radius: 12px; color: var(--mint); background: rgba(110,243,205,.08); box-shadow: inset 0 0 18px rgba(110,243,205,.09); }
.status { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; }
.status span { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 14px var(--mint); }

main { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.landing { min-height: calc(100vh - 86px); display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 70px 0 110px; text-align: center; }
.eyebrow { color: var(--mint); font-size: 11px; font-weight: 800; letter-spacing: .22em; }
h1 { margin: 24px 0 20px; font-size: clamp(46px, 7vw, 82px); line-height: .99; letter-spacing: -.065em; font-weight: 760; }
h1 em { color: transparent; font-style: normal; background: linear-gradient(90deg, var(--mint), var(--aqua)); background-clip: text; -webkit-background-clip: text; }
.lead { max-width: 650px; margin: 0 auto; color: var(--muted); font-size: 18px; line-height: 1.65; }

.create-button {
  width: min(600px, 100%);
  min-height: 88px;
  margin: 42px auto 0;
  padding: 17px 20px;
  display: grid;
  grid-template-columns: 52px 1fr 40px;
  align-items: center;
  gap: 16px;
  text-align: left;
  border: 1px solid rgba(110, 243, 205, .38);
  border-radius: 24px;
  background: linear-gradient(120deg, rgba(40, 92, 102, .72), rgba(16, 42, 66, .8));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
  cursor: pointer;
  transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.create-button:hover { transform: translateY(-3px); border-color: var(--mint); box-shadow: 0 30px 90px rgba(0,0,0,.42), 0 0 35px rgba(110,243,205,.09); }
.create-button:disabled { opacity: .65; cursor: wait; transform: none; }
.create-button strong { display: block; font-size: 18px; }
.create-button small { display: block; margin-top: 5px; color: #a8bbc8; }
.button-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 17px; color: #07231e; background: var(--mint); font-size: 27px; }
.arrow { color: var(--mint); font-size: 24px; text-align: center; }
.features { width: min(760px, 100%); margin-top: 62px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.features > div { padding: 20px 14px; display: grid; justify-items: center; gap: 5px; border-top: 1px solid var(--line); }
.features strong { font-size: 14px; }
.features small { color: var(--muted); line-height: 1.45; }
.feature-icon { margin-bottom: 5px; color: var(--mint); font-size: 22px; }

.inbox { padding: 50px 0 80px; }
.inbox-head { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 28px; }
.address-row { display: flex; align-items: center; gap: 12px; margin-top: 10px; }
.address-row > span { font-size: clamp(24px, 4vw, 40px); font-weight: 720; letter-spacing: -.04em; overflow-wrap: anywhere; }
.icon-button { width: 42px; height: 42px; flex: 0 0 auto; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-2); cursor: pointer; transition: .2s ease; }
.icon-button:hover { color: var(--mint); border-color: rgba(110,243,205,.4); }
.inbox-actions { display: flex; align-items: center; gap: 10px; }
.timer { margin-right: 8px; text-align: right; }
.timer small { display: block; color: var(--muted); font-size: 11px; }
.timer strong { display: block; margin-top: 3px; color: var(--mint); font-variant-numeric: tabular-nums; font-size: 17px; }
.soft-button, .danger-button { height: 42px; padding: 0 16px; border-radius: 13px; border: 1px solid var(--line); background: var(--surface-2); cursor: pointer; }
.soft-button:hover { color: var(--mint); border-color: rgba(110,243,205,.4); }
.danger-button { color: var(--danger); }
.danger-button:hover { border-color: rgba(255,138,155,.45); background: rgba(255,138,155,.08); }

.inbox-grid { min-height: 610px; display: grid; grid-template-columns: 230px minmax(0, 1fr); border: 1px solid var(--line); border-radius: 28px; overflow: hidden; background: rgba(8, 20, 34, .62); box-shadow: var(--shadow); backdrop-filter: blur(18px); }
.sidebar { padding: 22px 16px; display: flex; flex-direction: column; border-right: 1px solid var(--line); background: rgba(7,17,30,.48); }
.nav-item { width: 100%; height: 48px; padding: 0 14px; display: flex; align-items: center; gap: 10px; border: 0; border-radius: 13px; color: #dce7ef; background: transparent; text-align: left; }
.nav-item.active { background: rgba(110,243,205,.09); color: var(--mint); }
.nav-item b { margin-left: auto; min-width: 24px; padding: 3px 7px; border-radius: 9px; color: #071c18; background: var(--mint); text-align: center; font-size: 11px; }
.tip { margin-top: auto; padding: 15px; display: flex; gap: 10px; border: 1px solid var(--line); border-radius: 15px; color: var(--muted); background: rgba(255,255,255,.025); }
.tip span { color: var(--mint); }
.tip p { margin: 0; font-size: 12px; line-height: 1.55; }
.new-address { margin-top: 12px; padding: 12px; border-radius: 12px; color: var(--muted); text-decoration: none; text-align: center; font-size: 13px; }
.new-address:hover { color: var(--text); background: rgba(255,255,255,.035); }
.mail-panel { min-width: 0; padding: 28px; }
.panel-title { display: flex; align-items: center; justify-content: space-between; padding-bottom: 22px; border-bottom: 1px solid var(--line); }
.panel-title h2 { margin: 0; font-size: 22px; letter-spacing: -.03em; }
.panel-title p { margin: 5px 0 0; color: var(--muted); font-size: 12px; }
.refresh { font-size: 20px; }
.refresh.spinning { animation: spin .7s linear; }

.empty-state { min-height: 460px; display: grid; place-content: center; justify-items: center; text-align: center; }
.empty-state h3 { margin: 23px 0 7px; font-size: 20px; }
.empty-state p { margin: 0; color: var(--muted); line-height: 1.6; }
.radar { position: relative; width: 92px; height: 92px; display: grid; place-items: center; border: 1px solid rgba(110,243,205,.25); border-radius: 50%; color: var(--mint); background: rgba(110,243,205,.04); }
.radar:before, .radar:after { content: ""; position: absolute; border: 1px solid rgba(110,243,205,.12); border-radius: 50%; inset: -14px; }
.radar:after { inset: -29px; opacity: .55; }
.radar i { position: absolute; inset: -1px; border-radius: 50%; background: conic-gradient(from 0deg, transparent 0 70%, rgba(110,243,205,.22)); animation: spin 3s linear infinite; }
.radar span { position: relative; font-size: 26px; }
@keyframes spin { to { transform: rotate(360deg); } }

.messages { padding-top: 10px; }
.message { width: 100%; padding: 18px 12px; display: grid; grid-template-columns: 42px minmax(0, 1fr) auto; gap: 13px; align-items: center; border: 0; border-bottom: 1px solid var(--line); color: inherit; background: transparent; text-align: left; cursor: pointer; }
.message:hover { background: rgba(110,243,205,.035); }
.avatar { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 14px; color: var(--mint); background: rgba(110,243,205,.08); font-weight: 800; }
.message-copy { min-width: 0; }
.message-copy strong, .message-copy span { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.message-copy strong { font-size: 14px; }
.message-copy span { margin-top: 5px; color: var(--muted); font-size: 12px; }
.message time { color: var(--muted); font-size: 11px; }

.toast { position: fixed; left: 50%; bottom: 28px; z-index: 50; max-width: calc(100% - 32px); padding: 12px 17px; border: 1px solid rgba(110,243,205,.28); border-radius: 13px; color: var(--text); background: #102338; box-shadow: var(--shadow); transform: translate(-50%, 30px); opacity: 0; pointer-events: none; transition: .25s ease; }
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.modal { position: fixed; inset: 0; z-index: 40; display: grid; place-items: center; padding: 20px; background: rgba(2, 8, 15, .78); backdrop-filter: blur(10px); }
.modal-card { position: relative; width: min(760px, 100%); max-height: 84vh; overflow: auto; padding: 34px; border: 1px solid var(--line); border-radius: 24px; background: #0d1c2d; box-shadow: var(--shadow); }
.modal-close { position: absolute; top: 17px; right: 17px; width: 38px; height: 38px; border: 1px solid var(--line); border-radius: 12px; color: var(--muted); background: transparent; font-size: 24px; cursor: pointer; }
.message-meta { padding-right: 48px; display: flex; flex-direction: column; gap: 5px; color: var(--muted); font-size: 12px; }
.message-meta strong { color: var(--mint); font-size: 13px; }
.modal-card h2 { margin: 22px 0; font-size: 28px; line-height: 1.2; }
.modal-card pre { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; color: #dbe5ed; font: 14px/1.7 ui-monospace, SFMono-Regular, Menlo, monospace; }
.modal-card pre a { color: var(--aqua); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.modal-card pre a:hover { color: var(--mint); }

@media (max-width: 800px) {
  .topbar, main { width: min(100% - 28px, 1180px); }
  .landing { padding-top: 50px; justify-content: flex-start; }
  h1 { margin-top: 20px; }
  .features { grid-template-columns: 1fr; gap: 0; margin-top: 42px; }
  .inbox-head { align-items: flex-start; flex-direction: column; }
  .inbox-actions { width: 100%; flex-wrap: wrap; }
  .timer { margin-right: auto; text-align: left; }
  .inbox-grid { grid-template-columns: 1fr; }
  .sidebar { min-height: 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .tip { display: none; }
  .new-address { margin-top: 8px; }
  .mail-panel { padding: 20px 16px; }
}

@media (max-width: 520px) {
  .status { font-size: 0; }
  .status span { width: 8px; height: 8px; }
  h1 { font-size: 44px; }
  .lead { font-size: 16px; }
  .create-button { grid-template-columns: 46px 1fr; border-radius: 20px; }
  .button-icon { width: 46px; height: 46px; }
  .arrow { display: none; }
  .address-row > span { font-size: 22px; }
  .soft-button, .danger-button { flex: 1; }
  .message { grid-template-columns: 38px minmax(0, 1fr); }
  .message time { display: none; }
  .modal-card { padding: 26px 20px; }
}