:root {
  --gold-1: #ffe7a0;
  --gold-2: #e8b53c;
  --gold-3: #b8860b;
  --bg-0: #0b0b0d;
  --bg-1: #131318;
  --bg-2: #1b1b22;
  --bg-3: #23232c;
  --line: #2c2c36;
  --text: #ece9e3;
  --muted: #9a958c;
  --danger: #e0564b;
  --success: #57b87a;
  --gold-grad: linear-gradient(135deg, var(--gold-1), var(--gold-2) 45%, var(--gold-3));
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Helvetica, Arial, sans-serif;
  background: var(--bg-0);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--gold-2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(232,181,60,0.10), transparent 60%),
    var(--bg-0);
  padding: 24px;
}
.login-card {
  width: 100%;
  max-width: 380px;
  text-align: center;
}
.login-card .logo { margin-bottom: 28px; }
.login-card .logo svg { width: 180px; height: auto; }
.login-card .tagline { color: var(--muted); margin: -10px 0 28px; letter-spacing: 3px; font-size: 12px; text-transform: uppercase; }
.login-form { display: flex; flex-direction: column; gap: 14px; }

input, textarea, select {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--text);
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--gold-3);
  box-shadow: 0 0 0 3px rgba(232,181,60,0.12);
}
textarea { resize: vertical; min-height: 240px; line-height: 1.6; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: none; cursor: pointer;
  background: var(--bg-3); color: var(--text);
  border: 1px solid var(--line);
  border-radius: 10px; padding: 11px 16px;
  font-size: 14px; font-weight: 600; font-family: inherit;
  transition: transform .05s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { border-color: var(--gold-3); }
.btn:active { transform: translateY(1px); }
.btn-gold { background: var(--gold-grad); color: #2a1d00; border: none; }
.btn-gold:hover { filter: brightness(1.05); }
.btn-danger { color: var(--danger); }
.btn-sm { padding: 7px 11px; font-size: 13px; }

/* ---------- App shell ---------- */
.app { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.sidebar {
  background: var(--bg-1);
  border-right: 1px solid var(--line);
  padding: 22px 16px;
  display: flex; flex-direction: column; gap: 6px;
}
.sidebar .brand { margin: 4px 8px 22px; }
.sidebar .brand svg { width: 120px; height: auto; }
.nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  color: var(--text); font-weight: 500;
}
.nav-link:hover { background: var(--bg-2); text-decoration: none; }
.nav-link.active { background: var(--bg-3); }
.nav-link .ico { width: 18px; text-align: center; opacity: .85; }
.nav-sep { height: 1px; background: var(--line); margin: 12px 8px; }
.sidebar .spacer { flex: 1; }
.user-chip { padding: 10px 12px; color: var(--muted); font-size: 13px; word-break: break-all; }

.main { padding: 26px 30px; max-width: 1100px; }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.topbar h1 { font-size: 20px; margin: 0; font-weight: 600; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ---------- Cards & tables ---------- */
.card {
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 20px;
}
.card h2 { margin: 0 0 14px; font-size: 16px; }
.muted { color: var(--muted); }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1; min-width: 160px; }
.form-grid { display: grid; gap: 12px; }
label.field { display: block; }
label.field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.check { display: flex; align-items: center; gap: 8px; }
.check input { width: auto; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 11px 12px; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
tr:last-child td { border-bottom: none; }

/* ---------- Mail list ---------- */
.mail-list { background: var(--bg-1); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.mail-row { display: grid; grid-template-columns: 220px 1fr 150px; gap: 14px; padding: 13px 16px; border-bottom: 1px solid var(--line); align-items: center; }
.mail-row:last-child { border-bottom: none; }
.mail-row:hover { background: var(--bg-2); }
.mail-row.unread .mail-from, .mail-row.unread .mail-subject { font-weight: 700; color: #fff; }
.mail-from { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mail-subject { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mail-date { color: var(--muted); font-size: 13px; text-align: right; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--gold-2); margin-right: 8px; }

.pager { display: flex; justify-content: space-between; align-items: center; margin-top: 16px; }

/* ---------- Message view ---------- */
.message-head { border-bottom: 1px solid var(--line); padding-bottom: 14px; margin-bottom: 16px; }
.message-head h2 { font-size: 18px; margin: 0 0 8px; }
.message-meta { color: var(--muted); font-size: 14px; }
.message-body { white-space: pre-wrap; word-wrap: break-word; line-height: 1.65; }
.message-body iframe { width: 100%; border: none; min-height: 400px; background: #fff; border-radius: 8px; }

/* ---------- Flash ---------- */
.flash { padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; border: 1px solid var(--line); }
.flash.error { border-color: rgba(224,86,75,.5); background: rgba(224,86,75,.08); color: #f3b4ae; }
.flash.success { border-color: rgba(87,184,122,.5); background: rgba(87,184,122,.08); color: #aee0c1; }

.search-box { display: flex; gap: 8px; }
.search-box input { width: 260px; }

.empty { text-align: center; color: var(--muted); padding: 50px 20px; }

@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; flex-wrap: wrap; align-items: center; }
  .sidebar .spacer { display: none; }
  .mail-row { grid-template-columns: 1fr; gap: 4px; }
  .mail-date { text-align: left; }
}