@import url('https://fonts.googleapis.com/css2?family=Onest:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  --ink: #0B1220;
  --paper: #F6F8FB;
  --card: #FFFFFF;
  --line: #E2E7F0;
  --muted: #5B6577;
  --accent: #1F4BFF;
  --accent-ink: #1436D8;
  --accent-soft: #EAEFFF;
  --signal: #C6F24E;
  --danger: #D92D20;
  --danger-soft: #FEE4E2;
  --ok-soft: #DCFAE6;
  --ok: #067647;
  --radius: 14px;
  --sidebar: 220px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Onest', system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 420px at 8% -12%, rgba(31,75,255,.10), transparent 60%),
    radial-gradient(700px 360px at 100% 0%, rgba(198,242,78,.14), transparent 55%),
    var(--paper);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-ink); }

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 16px 40px rgba(17,26,46,.06);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}
.brand-mark { font-weight: 800; font-size: 1.4rem; letter-spacing: -.03em; }
.brand-sub {
  font-family: 'JetBrains Mono', monospace;
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}

h1 { margin: 0 0 8px; font-size: 1.55rem; letter-spacing: -.02em; }
.lead { margin: 0 0 18px; color: var(--muted); }

label { display: block; font-weight: 600; margin: 12px 0 6px; }
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  background: #fff;
  outline: none;
}
textarea { min-height: 220px; resize: vertical; }
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31,75,255,.12);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 12px;
  padding: 11px 16px;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-ink); }
.btn-secondary { background: var(--accent-soft); color: var(--accent-ink); }
.btn-danger { background: var(--danger-soft); color: var(--danger); }
.btn-block { width: 100%; margin-top: 16px; }

.alert {
  border-radius: 12px;
  padding: 11px 13px;
  margin: 0 0 14px;
  font-weight: 500;
}
.alert-error { background: var(--danger-soft); color: #912018; }
.alert-ok { background: var(--ok-soft); color: var(--ok); }

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 60px 1fr;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 18px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,.88);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.topbar-actions { display: flex; align-items: center; gap: 10px; }
.user-chip { color: var(--muted); font-size: .92rem; }

.shell {
  display: grid;
  grid-template-columns: var(--sidebar) 1fr;
  min-height: 0;
}

.sidebar {
  border-right: 1px solid var(--line);
  background: rgba(255,255,255,.65);
  padding: 14px 10px;
}

.side-link {
  display: block;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--ink);
  margin-bottom: 4px;
  font-weight: 600;
}
.side-link:hover { background: var(--accent-soft); color: var(--accent-ink); }
.side-link.active { background: var(--accent); color: #fff; }
.side-compose { margin: 4px 0 14px; }

.content {
  padding: 16px 18px 28px;
  min-width: 0;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 14px;
}
.toolbar h2 {
  margin: 0;
  margin-right: auto;
  font-size: 1.2rem;
}

.mail-list {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.mail-row {
  display: grid;
  grid-template-columns: 22px 180px 1fr 90px;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: inherit;
  align-items: center;
}
.mail-row:last-child { border-bottom: 0; }
.mail-row:hover { background: #f8faff; }
.mail-row.unread { background: #f3f6ff; }
.mail-row.unread .from,
.mail-row.unread .subject { font-weight: 800; }
.from, .subject, .date {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.subject { color: var(--ink); }
.date { color: var(--muted); font-size: .88rem; text-align: right; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: transparent;
}
.unread .dot { background: var(--accent); }

.message-card, .compose-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.msg-meta {
  display: grid;
  gap: 4px;
  color: var(--muted);
  font-size: .92rem;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.msg-meta strong { color: var(--ink); }

.msg-body {
  line-height: 1.65;
  overflow-wrap: anywhere;
}
.msg-body.plain { white-space: pre-wrap; }
.msg-body.html img { max-width: 100%; height: auto; }

.attachments {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.attachments a {
  display: inline-flex;
  margin: 0 8px 8px 0;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-weight: 600;
  font-size: .9rem;
}

.empty {
  padding: 36px 16px;
  text-align: center;
  color: var(--muted);
}

.pager {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 12px;
}

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 10px;
  }
  .side-link { white-space: nowrap; margin: 0; }
  .side-compose { margin: 0; }
  .mail-row { grid-template-columns: 16px 1fr 70px; }
  .mail-row .from { display: none; }
}