:root {
  --bg: #050b16;
  --bg2: #071120;
  --panel: rgba(9, 20, 40, 0.92);
  --line: rgba(86, 175, 255, 0.2);
  --text: #eaf6ff;
  --muted: #88a8c7;
  --accent: #39b8ff;
  --accent2: #7ce5ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  color: var(--text);
  background: radial-gradient(circle at top, #0a2044 0%, #050b16 55%, #02050c 100%);
}
.logo { width: 110px; filter: drop-shadow(0 0 18px rgba(79,199,255,.35)); }
.logo.small { width: 72px; }
.login-page { min-height: 100vh; display: grid; place-items: center; }
.login-shell { width: 100%; display: grid; place-items: center; padding: 40px 20px; }
.brand-card, .message-wrap, .sidebar, .mail-list {
  background: linear-gradient(180deg, rgba(12,25,48,.96), rgba(5,12,25,.96));
  border: 1px solid var(--line);
  box-shadow: 0 30px 80px rgba(0,0,0,.45), inset 0 0 45px rgba(57,184,255,.05);
  border-radius: 24px;
}
.brand-card {
  width: min(520px, 100%);
  padding: 36px;
  text-align: center;
}
.brand-card h1 { margin: 12px 0 8px; font-size: 38px; }
.brand-card p { color: var(--muted); margin-bottom: 24px; }
.stack { display: grid; gap: 10px; text-align: left; }
label { color: #c8e8ff; font-size: 14px; }
input {
  width: 100%;
  border-radius: 14px;
  padding: 14px 16px;
  border: 1px solid rgba(100,180,255,.18);
  background: rgba(2,7,15,.9);
  color: var(--text);
}
button, .btn {
  display: inline-block;
  text-decoration: none;
  border: 0;
  border-radius: 14px;
  padding: 14px 18px;
  font-weight: 700;
  color: #03101f;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 25px rgba(57,184,255,.25);
  cursor: pointer;
}
.btn.ghost { color: var(--text); background: rgba(14, 31, 58, .9); border: 1px solid var(--line); }
.mini-note, .muted { color: var(--muted); }
.topbar {
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(6,12,22,.85);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 18px;
  padding: 18px;
}
.sidebar { padding: 24px; min-height: calc(100vh - 90px); }
.mail-list { padding: 18px; display: grid; gap: 12px; }
.mail-card {
  display: block;
  text-decoration: none;
  color: var(--text);
  padding: 16px;
  border-radius: 16px;
  background: rgba(7, 16, 29, .85);
  border: 1px solid rgba(107, 186, 255, .12);
}
.mail-card.unseen { box-shadow: inset 0 0 0 1px rgba(124,229,255,.18); }
.row { display: flex; justify-content: space-between; gap: 20px; }
.message-wrap { margin: 24px auto; width: min(980px, calc(100% - 32px)); padding: 28px; }
.message-body { margin-top: 22px; background: rgba(4,10,19,.7); border-radius: 18px; padding: 18px; border: 1px solid var(--line); }
pre { white-space: pre-wrap; word-wrap: break-word; font-family: ui-monospace, SFMono-Regular, monospace; }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { min-height: auto; }
}
.app-shell {
  display: flex;
  min-height: 100vh;
  background: #07111f;
  color: #e8f1ff;
}

.sidebar {
  width: 280px;
  background: linear-gradient(180deg, #08192f 0%, #0b1020 100%);
  border-right: 1px solid rgba(89, 160, 255, 0.18);
  padding: 24px;
  box-sizing: border-box;
}

.brand-block {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.logo-small {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.account-box {
  background: rgba(18, 30, 52, 0.9);
  border: 1px solid rgba(76, 139, 255, 0.22);
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 18px;
}

.muted {
  color: #8fa8d8;
  font-size: 12px;
  margin-bottom: 6px;
}

.account-email {
  font-weight: 700;
  word-break: break-word;
}

.sidebar-actions {
  margin-top: 12px;
}

.btn-secondary {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  background: #12233f;
  border: 1px solid rgba(76, 139, 255, 0.24);
  color: #fff;
  text-decoration: none;
}

.content {
  flex: 1;
  padding: 28px;
  box-sizing: border-box;
}

.content-header {
  margin-bottom: 20px;
}

.mail-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mail-card {
  display: block;
  background: rgba(10, 19, 35, 0.95);
  border: 1px solid rgba(76, 139, 255, 0.16);
  border-radius: 14px;
  padding: 16px;
  text-decoration: none;
  color: #e8f1ff;
}

.mail-link:hover {
  border-color: rgba(76, 139, 255, 0.42);
  box-shadow: 0 0 0 1px rgba(76, 139, 255, 0.1), 0 12px 30px rgba(0, 0, 0, 0.24);
}

.mail-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.mail-from {
  color: #9fb5dd;
  margin-bottom: 8px;
}

.mail-meta {
  color: #6f8fc6;
  font-size: 13px;
}