/* Mail Probe — hand-built stylesheet.
   Aesthetic: warm "lab notebook" — ink on off-white paper, a single confident
   accent, monospace for machine output, generous but irregular spacing. */

:root {
  --paper: #f6f3ec;
  --paper-2: #fffdf8;
  --ink: #20231d;
  --ink-soft: #555b50;
  --line: #ddd8cc;
  --line-strong: #c8c2b2;
  --accent: #1f6f4a; /* pine */
  --accent-ink: #0f3d28;
  --warn: #9a6b12;
  --warn-bg: #fbf2dc;
  --fail: #a32b22;
  --fail-bg: #fbe6e2;
  --ok: #1f6f4a;
  --ok-bg: #e6f1ea;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --radius: 10px;
  --shadow: 0 1px 0 #fff inset, 0 2px 14px rgba(40, 36, 25, 0.06);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background:
    radial-gradient(900px 500px at 80% -10%, #fbf8f0 0%, transparent 60%),
    var(--paper);
  line-height: 1.5;
  font-size: 15.5px;
}

.wrap { width: min(1080px, 92vw); margin-inline: auto; }

/* ---- Masthead ---- */
.masthead {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(#fffdf8, #f3efe6);
}
.masthead__inner {
  display: flex;
  align-items: baseline;
  gap: 1.2rem 2rem;
  flex-wrap: wrap;
  padding: 1.4rem 0 1.25rem;
}
.brand { display: flex; align-items: center; gap: 0.55rem; }
.brand__mark {
  color: var(--accent);
  font-size: 1.35rem;
  transform: translateY(1px);
}
.brand__name {
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}
.masthead__tag {
  margin: 0;
  color: var(--ink-soft);
  font-style: italic;
  font-size: 0.97rem;
}

/* ---- Layout ---- */
.layout {
  display: grid;
  grid-template-columns: minmax(320px, 400px) 1fr;
  gap: 1.6rem;
  align-items: start;
  padding: 1.8rem 0 2.5rem;
}
@media (max-width: 820px) {
  .layout { grid-template-columns: 1fr; }
}

.panel {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.config { padding: 1.25rem 1.25rem 1.4rem; position: sticky; top: 1rem; }
@media (max-width: 820px) { .config { position: static; } }
.results { padding: 0; min-height: 320px; }

/* ---- Form ---- */
.field { margin-bottom: 1.05rem; }
.field__label,
.creds legend {
  display: block;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}
.muted { color: var(--line-strong); font-weight: 500; text-transform: none; letter-spacing: 0; }

input[type="text"],
input[type="email"],
input[type="number"],
input[type="password"] {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 111, 74, 0.14);
}
input::placeholder { color: #b7b1a3; }

.hint { margin: 0.35rem 0 0; font-size: 0.8rem; color: var(--ink-soft); }

.row { display: grid; grid-template-columns: 1fr 0.62fr; gap: 0.9rem; }
.field--port input { font-family: var(--mono); }

/* segmented control */
.segmented {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  overflow: hidden;
  background: #efece3;
}
.seg { position: relative; }
.seg input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.seg span {
  display: block;
  text-align: center;
  padding: 0.5rem 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
  cursor: pointer;
  border-left: 1px solid var(--line);
}
.seg:first-child span { border-left: 0; }
.seg input:checked + span {
  background: var(--accent);
  color: #fff;
}
.seg input:focus-visible + span { box-shadow: inset 0 0 0 2px rgba(31,111,74,0.4); }
.segmented--sm span { padding: 0.45rem 0.3rem; font-size: 0.8rem; }

.creds {
  border: 1px dashed var(--line-strong);
  border-radius: 9px;
  padding: 0.9rem 0.9rem 0.3rem;
  margin: 1.2rem 0 0.4rem;
}
.creds legend { padding: 0 0.4rem; }

.pw { position: relative; display: flex; }
.pw input { padding-right: 3.2rem; }
.pw__toggle {
  position: absolute;
  right: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
}

.advanced { margin: 0.9rem 0 0.2rem; }
.advanced summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent-ink);
  padding: 0.3rem 0;
  user-select: none;
}
.check {
  display: flex;
  gap: 0.55rem;
  align-items: flex-start;
  font-size: 0.9rem;
  margin: 0.7rem 0;
  cursor: pointer;
}
.check input { margin-top: 0.15rem; accent-color: var(--accent); }
.send-fields { margin-top: 0.5rem; }

.run {
  width: 100%;
  margin-top: 1.1rem;
  border: 0;
  border-radius: 9px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 650;
  font-size: 1rem;
  padding: 0.75rem;
  cursor: pointer;
  letter-spacing: 0.01em;
  box-shadow: 0 1px 0 rgba(255,255,255,0.25) inset, 0 6px 16px rgba(31,111,74,0.22);
  transition: transform 0.08s, background 0.15s;
}
.run:hover { background: #1a5e3f; }
.run:active { transform: translateY(1px); }
.run[disabled] { opacity: 0.65; cursor: progress; }

.form-error {
  margin: 0.8rem 0 0;
  color: var(--fail);
  background: var(--fail-bg);
  border: 1px solid #e7bdb6;
  border-radius: 8px;
  padding: 0.55rem 0.7rem;
  font-size: 0.88rem;
}

/* ---- Results ---- */
.placeholder {
  text-align: center;
  color: var(--ink-soft);
  padding: 3.5rem 2rem;
}
.placeholder__art {
  font-size: 2.6rem;
  color: var(--line-strong);
  margin-bottom: 0.5rem;
}
.placeholder h2 { margin: 0 0 0.4rem; font-size: 1.15rem; color: var(--ink); }
.placeholder p { margin: 0 auto; max-width: 34ch; font-size: 0.92rem; }

.verdict {
  padding: 1.2rem 1.3rem;
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: 1px solid var(--line);
}
.verdict--ok { background: var(--ok-bg); }
.verdict--warn { background: var(--warn-bg); }
.verdict--fail { background: var(--fail-bg); }
.verdict__row { display: flex; align-items: center; gap: 0.7rem; }
.verdict__dot {
  width: 12px; height: 12px; border-radius: 50%; flex: none;
  box-shadow: 0 0 0 4px rgba(0,0,0,0.05);
}
.verdict--ok .verdict__dot { background: var(--ok); }
.verdict--warn .verdict__dot { background: var(--warn); }
.verdict--fail .verdict__dot { background: var(--fail); }
.verdict__head { margin: 0; font-size: 1.18rem; letter-spacing: -0.01em; }
.verdict__sum { margin: 0.5rem 0 0; color: var(--ink-soft); font-size: 0.95rem; }
.verdict__meta {
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  word-break: break-all;
}

.steps { padding: 0.4rem 1.3rem 1.4rem; }
.step {
  border-bottom: 1px solid var(--line);
  padding: 0.95rem 0;
}
.step:last-child { border-bottom: 0; }
.step__head { display: flex; align-items: center; gap: 0.6rem; }
.step__icon {
  width: 1.3rem; text-align: center; font-size: 0.95rem; flex: none;
}
.step__icon--ok { color: var(--ok); }
.step__icon--warn { color: var(--warn); }
.step__icon--fail { color: var(--fail); }
.step__icon--idle { color: var(--line-strong); }
.step__title { font-weight: 650; font-size: 0.98rem; }
.step__badge {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--ink-soft);
  background: #f0ede4;
  border: 1px solid var(--line);
  padding: 0.12rem 0.45rem;
  border-radius: 20px;
}
.step__body { margin: 0.45rem 0 0 1.9rem; }
.kv {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.2rem 1rem;
  font-size: 0.88rem;
  margin: 0.3rem 0;
}
.kv dt { color: var(--ink-soft); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 0.83rem; word-break: break-word; }

.tags { display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.4rem 0; }
.tag {
  font-family: var(--mono);
  font-size: 0.74rem;
  background: var(--ok-bg);
  color: var(--accent-ink);
  border: 1px solid #bcd8c9;
  padding: 0.1rem 0.45rem;
  border-radius: 5px;
}
.tag--muted { background: #f0ede4; color: var(--ink-soft); border-color: var(--line); }

/* port discovery grid */
.ports { display: flex; flex-direction: column; gap: 0.3rem; margin: 0.3rem 0; }
.port {
  display: grid;
  grid-template-columns: 12px 3.2rem 1fr auto;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #fbfaf5;
}
.port--sel { border-color: var(--line-strong); box-shadow: 0 0 0 2px rgba(31,111,74,0.1); }
.port__dot { width: 9px; height: 9px; border-radius: 50%; background: var(--line-strong); }
.port--open .port__dot { background: var(--ok); }
.port--closed .port__dot { background: #cdb3ad; }
.port--closed { opacity: 0.72; }
.port__num { font-family: var(--mono); font-weight: 600; }
.port__label { color: var(--ink-soft); }
.port__state { font-family: var(--mono); font-size: 0.76rem; color: var(--ink-soft); }
.port--open .port__state { color: var(--ok); }

.diag {
  margin: 0.5rem 0 0;
  border-left: 3px solid currentColor;
  padding: 0.5rem 0.8rem;
  border-radius: 0 7px 7px 0;
  font-size: 0.9rem;
}
.diag--fail { color: var(--fail); background: var(--fail-bg); }
.diag--warn { color: var(--warn); background: var(--warn-bg); }
.diag strong { display: block; margin-bottom: 0.15rem; }
.diag p { margin: 0.2rem 0 0; color: var(--ink); }
.diag .fix { font-size: 0.85rem; }
.diag .fix b { color: inherit; }

.raw {
  margin-top: 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  white-space: pre-wrap;
  background: #1f231d;
  color: #d6e6dc;
  padding: 0.6rem 0.75rem;
  border-radius: 7px;
  max-height: 160px;
  overflow: auto;
}
.raw summary { cursor: pointer; color: var(--ink-soft); font-family: var(--sans); }
details.raw-wrap { margin-top: 0.5rem; }
details.raw-wrap > summary {
  cursor: pointer; font-size: 0.82rem; color: var(--ink-soft);
}

/* spinner */
.spin {
  display: inline-block; width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff;
  border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: -2px;
  margin-right: 0.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

.site-foot {
  color: var(--ink-soft);
  font-size: 0.82rem;
  padding: 1.5rem 0 2.5rem;
  max-width: 70ch;
}
.site-foot p { margin: 0; }