:root {
  --bg: #0a0b10;
  --card: #11141c;
  --card-border: #1f2330;
  --fg: #e8eaed;
  --fg-muted: #8b919c;
  --fg-dim: #5b6270;
  --accent: #10b981;
  --accent-glow: rgba(16, 185, 129, 0.35);
  --accent-strong: #34d399;
  --accent-violet: #a78bfa;
  --accent-blue: #38bdf8;
  --danger: #ef4444;
  --warn: #f59e0b;
  --info: #6b7280;
  --code-bg: #0c0e14;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at 50% -10%, rgba(16,185,129,0.08), transparent 55%),
    radial-gradient(circle at 80% 110%, rgba(167,139,250,0.06), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  color: var(--fg);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  min-height: 100%;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 16px 60px;
  gap: 24px;
}

/* ---------- hero ---------- */

.hero {
  width: 100%;
  max-width: 560px;
  text-align: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(16,185,129,0.4);
  background: rgba(16,185,129,0.08);
  color: var(--accent-strong);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.badge .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-strong);
  box-shadow: 0 0 0 4px rgba(16,185,129,0.18);
  animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.6; transform: scale(0.85); }
}

.hero h1 {
  margin: 18px 0 12px;
  font-size: 38px;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero h1 .grad {
  background: linear-gradient(90deg, var(--accent-strong), var(--accent-violet) 70%, var(--accent-blue));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lead {
  margin: 0 auto;
  max-width: 460px;
  color: var(--fg-muted);
  font-size: 14px;
}

/* ---------- card ---------- */

.card {
  width: 100%;
  max-width: 560px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent), var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 28px 28px 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.45);
}

.card.card-wide { max-width: 980px; }

label {
  display: block;
  margin: 0 0 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

input[type="email"] {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--code-bg);
  color: var(--fg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}

input[type="email"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.18);
}

input[type="email"]:disabled { opacity: 0.6; }

button {
  width: 100%;
  padding: 13px 16px;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: white;
  background: var(--accent);
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  transition: background .15s ease, opacity .15s ease, transform .05s ease;
  letter-spacing: 0.02em;
}
button:hover:not(:disabled) { background: #0fa674; }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: default; }

button.secondary {
  background: transparent;
  border: 1px solid var(--card-border);
  color: var(--fg);
  font-weight: 500;
}
button.secondary:hover:not(:disabled) {
  background: rgba(255,255,255,0.03);
  border-color: var(--fg-muted);
}

.status {
  margin: 14px 0 0;
  padding: 10px 14px;
  border-radius: 10px;
  font-size: 13px;
  border: 1px solid var(--card-border);
  background: var(--code-bg);
}
.status.error { border-color: var(--danger); color: #ffb4b4; }
.status.warn  { border-color: var(--warn);   color: #fde2a4; }
.status.info  { border-color: var(--info);   color: var(--fg-muted); }

.hint {
  margin: 12px 0 0;
  color: var(--fg-dim);
  font-size: 12px;
  text-align: center;
}
.hint-inline { margin-top: 10px; text-align: left; }

/* ---------- progress bar (shared) ---------- */

.progress {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.06);
  overflow: hidden;
  margin-top: 8px;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-strong), var(--accent-blue));
  border-radius: 999px;
  transition: width .9s linear;
}

.progress-block { margin-top: 18px; }
.progress-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 13px;
  color: var(--fg-muted);
}
.progress-row :last-child { color: var(--accent-blue); font-weight: 600; }

/* ---------- code view ---------- */

.code-label {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 18px;
}

.code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 60px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  color: var(--accent-strong);
  cursor: pointer;
  user-select: all;
  text-shadow: 0 0 24px var(--accent-glow);
  padding: 4px 0;
  transition: transform .1s ease;
}
.code:hover { transform: scale(1.01); }
.code:active { transform: scale(0.99); }

.code-sub {
  text-align: center;
  font-size: 12px;
  color: var(--fg-muted);
  margin: 4px 0 24px;
  letter-spacing: 0.04em;
}
.code-sub.ok { color: var(--accent-strong); }

.refresh-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-top: 8px;
}
.refresh-value {
  color: var(--accent-strong);
  font-size: 16px;
  letter-spacing: 0;
}

.alias {
  text-align: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 15px;
  font-weight: 600;
  color: var(--fg);
  background: rgba(16,185,129,0.07);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: 10px;
  padding: 10px 14px;
  margin: 16px 0 20px;
  word-break: break-all;
  letter-spacing: 0.01em;
}

.inbox-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 13px 16px;
  margin-top: 12px;
  text-decoration: none;
  border-radius: 12px;
  border: 1px solid rgba(16,185,129,0.45);
  background: rgba(16,185,129,0.06);
  color: var(--fg);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: background .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.inbox-btn:hover {
  background: rgba(16,185,129,0.12);
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 3px rgba(16,185,129,0.12);
}
.inbox-btn b { font-weight: 700; letter-spacing: 0.06em; }
.inbox-btn em {
  font-style: normal;
  color: var(--accent-strong);
  font-size: 12px;
  margin-left: 6px;
}
.inbox-icon {
  display: inline-flex;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: rgba(16,185,129,0.15);
  align-items: center;
  justify-content: center;
  color: var(--accent-strong);
  font-weight: 700;
  font-size: 13px;
}

/* ---------- trust footer ---------- */

.trust {
  width: 100%;
  max-width: 560px;
  text-align: center;
  margin-top: 8px;
}
.trust-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-strong);
  margin-bottom: 12px;
}
.trust-title .shield { margin-right: 6px; }
.trust-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.trust-pill {
  padding: 10px 8px;
  border-radius: 10px;
  border: 1px solid var(--card-border);
  background: var(--card);
  color: var(--fg-muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.footnote {
  margin-top: 18px;
  color: var(--fg-dim);
  font-size: 12px;
}

@media (max-width: 480px) {
  .hero h1 { font-size: 28px; }
  .code { font-size: 44px; }
  .trust-row { grid-template-columns: repeat(2, 1fr); }
  .card { padding: 22px 18px; }
}

/* ---------- inbox page ---------- */

.inbox-shell {
  display: grid;
  grid-template-columns: minmax(260px, 320px) 1fr;
  min-height: 540px;
  gap: 0;
  border: 1px solid var(--card-border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--card);
}
.inbox-side {
  border-right: 1px solid var(--card-border);
  background: rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
}
.inbox-side-head {
  padding: 14px 16px;
  border-bottom: 1px solid var(--card-border);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.inbox-list {
  list-style: none;
  margin: 0;
  padding: 8px;
  overflow-y: auto;
  flex: 1;
}
.inbox-list .message {
  padding: 12px 12px;
  margin: 4px 0;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  transition: background .12s ease, border-color .12s ease;
}
.inbox-list .message:hover {
  background: rgba(255,255,255,0.03);
  border-color: var(--card-border);
}
.inbox-list .message.active {
  background: rgba(16,185,129,0.08);
  border-color: rgba(16,185,129,0.4);
}
.m-from-line { font-weight: 600; font-size: 13px; }
.m-subj { font-size: 12px; color: var(--fg-muted); margin: 2px 0; }
.m-date-line { font-size: 11px; color: var(--fg-dim); }

.inbox-main {
  display: flex;
  flex-direction: column;
}
.inbox-main-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.inbox-main-head .alias-pill {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  color: var(--fg-muted);
  padding: 6px 10px;
  border: 1px solid var(--card-border);
  border-radius: 8px;
  background: var(--code-bg);
}
.inbox-main-head .check-btn {
  padding: 8px 14px;
  width: auto;
  margin: 0;
  font-size: 13px;
  background: var(--accent-blue);
  color: #052836;
}
.inbox-main-head .check-btn:hover:not(:disabled) { background: #20a7e6; }

.message-view {
  padding: 18px;
}
.message-view .empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 320px;
  color: var(--fg-dim);
  gap: 12px;
}
.empty-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(56,189,248,0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}
#m-subject { margin: 0 0 8px; font-size: 17px; }
.m-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--fg-muted);
  margin-bottom: 12px;
}
#m-body {
  width: 100%;
  height: 460px;
  background: white;
  border: 0;
  border-radius: 8px;
}
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 16px;
}
.back:hover { color: var(--fg); }

@media (max-width: 720px) {
  .inbox-shell { grid-template-columns: 1fr; }
  .inbox-side { border-right: 0; border-bottom: 1px solid var(--card-border); }
}