/* ============================================================================
   ssmtp-server — "mail operations console" design system
   A bespoke, console-flavoured UI: ink-dark surfaces, an electric-indigo
   signal accent, monospaced technical data, and a fixed operator sidebar.
   ========================================================================== */

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

:root {
  /* Brand / signal */
  --accent: #6d5efc;
  --accent-hover: #5b4ce0;
  --accent-soft: rgba(109, 94, 252, 0.12);
  --accent-ring: rgba(109, 94, 252, 0.35);
  --cyan: #22d3ee;

  /* Surfaces (light) */
  --bg: #f4f5fb;
  --bg-grid: rgba(20, 22, 46, 0.035);
  --surface: #ffffff;
  --surface-2: #f8f9fd;
  --surface-hover: #f1f2f9;
  --sidebar-bg: #14152b;
  --sidebar-fg: #c7c9e6;
  --sidebar-fg-dim: #7c7ea6;
  --sidebar-active: rgba(109, 94, 252, 0.18);

  /* Text */
  --text: #1a1c2e;
  --text-2: #5a5d78;
  --text-3: #8a8da8;

  /* Lines */
  --border: #e5e7f2;
  --border-strong: #d4d7e8;

  /* Status */
  --ok: #10b981;
  --ok-soft: rgba(16, 185, 129, 0.12);
  --warn: #f59e0b;
  --warn-soft: rgba(245, 158, 11, 0.14);
  --bad: #ef4444;
  --bad-soft: rgba(239, 68, 68, 0.12);
  --info: #3b82f6;
  --info-soft: rgba(59, 130, 246, 0.12);

  /* Shape / motion */
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(16, 18, 40, 0.04), 0 8px 24px -12px rgba(16, 18, 40, 0.18);
  --shadow-lg: 0 24px 60px -24px rgba(16, 18, 40, 0.35);
  --mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
  --t-fast: 140ms cubic-bezier(0.4, 0, 0.2, 1);
  --t: 220ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --bg: #0b0c16;
  --bg-grid: rgba(255, 255, 255, 0.025);
  --surface: #15172a;
  --surface-2: #1b1d33;
  --surface-hover: #20223c;
  --sidebar-bg: #0c0d1a;
  --sidebar-fg: #c2c4e4;
  --sidebar-fg-dim: #686b94;
  --sidebar-active: rgba(109, 94, 252, 0.22);

  --text: #e8e9f5;
  --text-2: #a3a6c4;
  --text-3: #6e7193;

  --border: #262945;
  --border-strong: #323657;

  --accent-soft: rgba(109, 94, 252, 0.18);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px -16px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 28px 70px -28px rgba(0, 0, 0, 0.8);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-font-smoothing: antialiased;
  font-size: 14px;
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--text-2); }
.dim { color: var(--text-3); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ----- App shell ---------------------------------------------------------- */
.shell { display: grid; grid-template-columns: 248px 1fr; min-height: 100vh; }

.sidebar {
  background: var(--sidebar-bg);
  color: var(--sidebar-fg);
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand { display: flex; align-items: center; gap: 11px; padding: 4px 8px 22px; }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  display: grid; place-items: center; color: #fff; flex-shrink: 0;
  box-shadow: 0 6px 18px -6px var(--accent-ring);
}
.brand-name { font-weight: 700; font-size: 16px; color: #fff; letter-spacing: -0.01em; }
.brand-sub { font-size: 11px; color: var(--sidebar-fg-dim); font-family: var(--mono); }

.nav { display: flex; flex-direction: column; gap: 3px; margin-top: 6px; }
.nav-label {
  font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.09em;
  color: var(--sidebar-fg-dim); padding: 14px 12px 6px; font-weight: 600;
}
.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 12px; border-radius: 10px;
  color: var(--sidebar-fg); font-weight: 500;
  transition: background var(--t-fast), color var(--t-fast);
}
.nav-item svg { width: 18px; height: 18px; opacity: 0.85; flex-shrink: 0; }
.nav-item:hover { background: rgba(255, 255, 255, 0.05); color: #fff; }
.nav-item.active { background: var(--sidebar-active); color: #fff; }
.nav-item.active svg { opacity: 1; color: var(--cyan); }

.sidebar-foot { margin-top: auto; padding: 12px 8px 0; border-top: 1px solid rgba(255,255,255,0.07); }
.sidebar-host { font-family: var(--mono); font-size: 11px; color: var(--sidebar-fg-dim); word-break: break-all; }

/* ----- Top bar ------------------------------------------------------------ */
.main { display: flex; flex-direction: column; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 30px; border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 70%, transparent);
  backdrop-filter: blur(8px);
  position: sticky; top: 0; z-index: 20;
}
.page-title { font-size: 19px; font-weight: 700; letter-spacing: -0.02em; }
.page-sub { font-size: 12.5px; color: var(--text-2); margin-top: 1px; }
.topbar-actions { display: flex; align-items: center; gap: 12px; }

.icon-btn {
  width: 38px; height: 38px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface);
  display: grid; place-items: center; cursor: pointer; color: var(--text-2);
  transition: all var(--t-fast);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-hover); }
.icon-btn svg { width: 18px; height: 18px; }

.user-chip {
  display: flex; align-items: center; gap: 9px;
  padding: 6px 6px 6px 13px; border: 1px solid var(--border);
  border-radius: 22px; background: var(--surface);
}
.user-chip .who { font-size: 13px; font-weight: 500; }
.btn-logout {
  border: none; background: var(--surface-2); color: var(--text-2);
  font-size: 12px; font-weight: 600; padding: 6px 11px; border-radius: 16px;
  cursor: pointer; transition: all var(--t-fast); font-family: inherit;
}
.btn-logout:hover { color: var(--bad); background: var(--bad-soft); }

.content { padding: 28px 30px 60px; }

/* ----- Stat cards --------------------------------------------------------- */
.stat-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px; margin-bottom: 26px;
}
.stat {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px 20px; box-shadow: var(--shadow);
  position: relative; overflow: hidden;
}
.stat::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--accent);
}
.stat.ok::before { background: var(--ok); }
.stat.warn::before { background: var(--warn); }
.stat.bad::before { background: var(--bad); }
.stat-label { font-size: 12px; color: var(--text-2); font-weight: 500; }
.stat-value { font-family: var(--mono); font-size: 30px; font-weight: 600; margin-top: 6px; letter-spacing: -0.02em; }
.stat-foot { font-size: 11.5px; color: var(--text-3); margin-top: 4px; }

/* ----- Card / panel ------------------------------------------------------- */
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 14px; padding: 16px 20px; border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.panel-title { font-size: 14.5px; font-weight: 600; }
.panel-body { padding: 20px; }

/* ----- Toolbar / filters -------------------------------------------------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.search {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 0 11px; min-width: 240px;
}
.search svg { width: 16px; height: 16px; color: var(--text-3); }
.search input {
  border: none; background: transparent; outline: none; color: var(--text);
  font-family: inherit; font-size: 13.5px; padding: 9px 0; width: 100%;
}
.seg { display: flex; background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 3px; }
.seg button {
  border: none; background: transparent; color: var(--text-2);
  font-family: inherit; font-size: 12.5px; font-weight: 600;
  padding: 6px 12px; border-radius: 7px; cursor: pointer; transition: all var(--t-fast);
}
.seg button.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

/* ----- Buttons ------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font-family: inherit; font-size: 13.5px; font-weight: 600;
  padding: 9px 16px; border-radius: 10px; border: 1px solid transparent;
  transition: all var(--t-fast);
}
.btn svg { width: 16px; height: 16px; }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ghost { background: var(--surface); border-color: var(--border); color: var(--text); }
.btn-ghost:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.btn-danger { background: var(--bad-soft); color: var(--bad); }
.btn-danger:hover { background: var(--bad); color: #fff; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-sm { padding: 6px 11px; font-size: 12.5px; border-radius: 8px; }

/* ----- Tables ------------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.data th {
  text-align: left; font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--text-3); font-weight: 600;
  padding: 11px 20px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.data td { padding: 13px 20px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data tbody tr { transition: background var(--t-fast); cursor: default; }
table.data tbody tr.clickable { cursor: pointer; }
table.data tbody tr:hover { background: var(--surface-2); }
table.data tbody tr:last-child td { border-bottom: none; }

/* ----- Status pills ------------------------------------------------------- */
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11.5px; font-weight: 600; padding: 3px 10px; border-radius: 20px;
  font-family: var(--mono); letter-spacing: 0.01em;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill.sent { color: var(--ok); background: var(--ok-soft); }
.pill.queued, .pill.received { color: var(--info); background: var(--info-soft); }
.pill.deferred { color: var(--warn); background: var(--warn-soft); }
.pill.bounced { color: var(--bad); background: var(--bad-soft); }
.pill.pass { color: var(--ok); background: var(--ok-soft); }
.pill.fail { color: var(--bad); background: var(--bad-soft); }
.pill.partial { color: var(--warn); background: var(--warn-soft); }
.pill.info { color: var(--info); background: var(--info-soft); }
.pill.on { color: var(--ok); background: var(--ok-soft); }
.pill.off { color: var(--text-3); background: var(--surface-hover); }

/* ----- Timeline (message lifecycle) -------------------------------------- */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px;
  width: 2px; background: var(--border);
}
.tl-item { position: relative; padding: 0 0 22px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute; left: -28px; top: 1px; width: 20px; height: 20px;
  border-radius: 50%; background: var(--surface); border: 2px solid var(--accent);
  display: grid; place-items: center;
}
.tl-dot.ok { border-color: var(--ok); }
.tl-dot.bad { border-color: var(--bad); }
.tl-dot.warn { border-color: var(--warn); }
.tl-dot::after { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.tl-dot.ok::after { background: var(--ok); }
.tl-dot.bad::after { background: var(--bad); }
.tl-dot.warn::after { background: var(--warn); }
.tl-head { font-weight: 600; font-size: 13.5px; }
.tl-time { font-size: 11.5px; color: var(--text-3); font-family: var(--mono); }
.tl-detail { font-size: 12.5px; color: var(--text-2); font-family: var(--mono); margin-top: 4px; word-break: break-word; }

/* ----- Definition rows ---------------------------------------------------- */
.kv { display: grid; grid-template-columns: 150px 1fr; gap: 1px; }
.kv > dt { padding: 11px 0; color: var(--text-2); font-size: 12.5px; font-weight: 500; }
.kv > dd { padding: 11px 0; margin: 0; font-family: var(--mono); font-size: 13px; word-break: break-word; }
.kv > dt, .kv > dd { border-bottom: 1px solid var(--border); }

/* ----- Forms -------------------------------------------------------------- */
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 6px; color: var(--text-2); }
.field input, .field select {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface-2);
  color: var(--text); font-family: inherit; font-size: 13.5px; outline: none;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.field input:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-ring); }
.field .hint { font-size: 11.5px; color: var(--text-3); margin-top: 5px; }

/* ----- Code / copyable ---------------------------------------------------- */
.code {
  font-family: var(--mono); font-size: 12.5px; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 11px;
  display: flex; align-items: center; gap: 8px; word-break: break-all;
}
.copy {
  margin-left: auto; flex-shrink: 0; cursor: pointer; color: var(--text-3);
  border: none; background: transparent; padding: 2px; border-radius: 6px;
  display: grid; place-items: center;
}
.copy:hover { color: var(--accent); }
.copy svg { width: 15px; height: 15px; }

/* ----- Empty / loading ---------------------------------------------------- */
.empty { text-align: center; padding: 54px 20px; color: var(--text-3); }
.empty svg { width: 40px; height: 40px; opacity: 0.4; margin-bottom: 12px; }
.skeleton-row td { color: transparent; }

/* ----- Modal -------------------------------------------------------------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(8, 9, 20, 0.55);
  backdrop-filter: blur(3px); display: none; align-items: center;
  justify-content: center; z-index: 100; padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 18px; box-shadow: var(--shadow-lg); width: 100%;
  max-width: 460px; max-height: 90vh; overflow: auto;
  animation: pop var(--t);
}
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(0.98); } }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 20px 22px 0; }
.modal-title { font-size: 16px; font-weight: 700; }
.modal-body { padding: 18px 22px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 10px; padding: 0 22px 22px; }
.btn-close { border: none; background: transparent; color: var(--text-3); cursor: pointer; font-size: 22px; line-height: 1; }
.btn-close:hover { color: var(--text); }

/* ----- Toast -------------------------------------------------------------- */
.toast-wrap { position: fixed; bottom: 24px; right: 24px; display: flex; flex-direction: column; gap: 10px; z-index: 200; }
.toast {
  min-width: 260px; max-width: 380px; padding: 13px 16px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  box-shadow: var(--shadow-lg); display: flex; gap: 11px; align-items: flex-start;
  animation: slidein var(--t); border-left: 3px solid var(--accent);
}
.toast.success { border-left-color: var(--ok); }
.toast.error { border-left-color: var(--bad); }
.toast.removing { animation: slideout var(--t) forwards; }
.toast-msg { font-size: 13px; font-weight: 500; }
@keyframes slidein { from { opacity: 0; transform: translateX(20px); } }
@keyframes slideout { to { opacity: 0; transform: translateX(20px); } }

/* ----- Theme toggle knob -------------------------------------------------- */
.theme-toggle svg.sun { display: none; }
[data-theme="dark"] .theme-toggle svg.sun { display: block; }
[data-theme="dark"] .theme-toggle svg.moon { display: none; }

/* ----- Login -------------------------------------------------------------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card {
  width: 100%; max-width: 380px; background: var(--surface);
  border: 1px solid var(--border); border-radius: 20px; padding: 34px 30px;
  box-shadow: var(--shadow-lg);
}
.login-brand { display: flex; flex-direction: column; align-items: center; gap: 14px; margin-bottom: 26px; }
.login-brand .brand-mark { width: 48px; height: 48px; border-radius: 14px; }
.login-title { font-size: 19px; font-weight: 700; }
.login-err { background: var(--bad-soft); color: var(--bad); font-size: 13px; font-weight: 500; padding: 10px 13px; border-radius: 10px; margin-bottom: 16px; }

/* ----- Responsive --------------------------------------------------------- */
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed; bottom: 0; left: 0; right: 0; top: auto; height: auto;
    flex-direction: row; padding: 8px; z-index: 50; overflow-x: auto;
  }
  .brand, .nav-label, .sidebar-foot { display: none; }
  .nav { flex-direction: row; margin: 0; }
  .nav-item span { display: none; }
  .content { padding: 20px 16px 90px; }
  .topbar { padding: 14px 16px; }
}