:root {
  --bg: #000;
  --surface: #0a0a0a;
  --surface-2: #101010;
  --border: rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.22);
  --fg: #fff;
  --muted: rgba(255,255,255,0.45);
  --muted-2: rgba(255,255,255,0.28);
  --ok: #4ade80;
  --bad: #f87171;
  --warn: #fbbf24;
  --r: 8px;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 13px; line-height: 1.45; -webkit-font-smoothing: antialiased;
}
.grid-bg {
  position: fixed; inset: 0; z-index: -1;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.022) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.022) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 75% 55% at 50% 0%, #000 40%, transparent 100%);
}

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
  background: rgba(0,0,0,0.72); backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 9px; }
.logo-mark { display: grid; place-items: center; width: 28px; height: 28px; border: 1px solid var(--border-strong); border-radius: 7px; }
.brand-name { font-weight: 600; letter-spacing: -0.01em; font-size: 14px; }
.brand-tag { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 2px 8px; }
.topbar-meta { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.meta-pill { display: inline-flex; align-items: center; gap: 6px; color: var(--muted);
  border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; font-size: 12px; }
.meta-pill span { color: var(--fg); font-weight: 500; }

/* Layout */
.layout { display: grid; grid-template-columns: 1fr 380px; gap: 16px; max-width: 1180px; margin: 0 auto; padding: 18px; align-items: start; }
@media (max-width: 920px) { .layout { grid-template-columns: 1fr; } }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; }
.console-panel { position: sticky; top: 78px; overflow: hidden; }
.form { padding: 14px; display: flex; flex-direction: column; gap: 14px; }

/* Block */
.block { display: flex; flex-direction: column; gap: 9px; }
.block-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.block-title { display: inline-flex; align-items: center; gap: 7px; font-size: 11px; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--muted); font-weight: 500; font-family: var(--mono); }
.block-title svg { color: var(--muted); }
.muted { color: var(--muted-2); font-style: normal; text-transform: none; letter-spacing: 0; }

/* Method banner */
.method-banner { display: flex; align-items: flex-start; gap: 9px; padding: 11px 13px; border-radius: var(--r);
  border: 1px solid rgba(74,222,128,0.28); background: rgba(74,222,128,0.05); color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.method-banner svg { color: var(--ok); flex-shrink: 0; margin-top: 1px; }
.method-banner strong { color: var(--fg); font-weight: 600; }

/* Inputs */
.field { display: flex; flex-direction: column; gap: 5px; }
.field > span { font-size: 11px; color: var(--muted); }
input, select, textarea {
  width: 100%; background: var(--bg); color: var(--fg); border: 1px solid var(--border); border-radius: var(--r);
  padding: 8px 10px; font-family: inherit; font-size: 12.5px; outline: none; transition: border-color .15s, box-shadow .15s;
}
input::placeholder, textarea::placeholder { color: var(--muted-2); }
input:focus, textarea:focus { border-color: var(--border-strong); box-shadow: 0 0 0 3px rgba(255,255,255,0.05); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.grid-3-1 { display: grid; grid-template-columns: 3fr 1fr; gap: 10px; }
@media (max-width: 560px){ .grid-2, .grid-3-1 { grid-template-columns: 1fr; } }

.code-area { min-height: 120px; resize: vertical; line-height: 1.55; font-size: 12px; font-family: var(--mono); }
.counter { font-family: var(--mono); font-size: 11px; border: 1px solid var(--border); border-radius: 999px; padding: 1px 8px; }

/* Mailbox rotation rows */
.smtp-list { display: flex; flex-direction: column; gap: 8px; }
.mailbox-row { display: grid; grid-template-columns: 1.6fr 1.2fr 1.1fr 0.6fr 0.8fr auto auto; gap: 6px; align-items: center; }
.mailbox-row input, .mailbox-row select { padding: 7px 9px; font-size: 12px; }
@media (max-width: 760px){ .mailbox-row { grid-template-columns: 1fr 1fr; } }

/* Mailbox-check status indicator (the tick button turns colour after test) */
.mailbox-check { transition: color .15s, border-color .15s, background .15s; }
.mailbox-row[data-status="checking"] .mailbox-check { color: var(--warn); border-color: rgba(251,191,36,0.45); animation: pulse 1.2s ease-in-out infinite; }
.mailbox-row[data-status="ok"] .mailbox-check      { color: var(--ok);   border-color: rgba(74,222,128,0.55); background: rgba(74,222,128,0.07); }
.mailbox-row[data-status="bad"] .mailbox-check     { color: var(--bad);  border-color: rgba(248,113,113,0.55); background: rgba(248,113,113,0.07); }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.45; } }
.select-wrap { position: relative; }
.select-wrap select { appearance: none; padding-right: 26px; cursor: pointer; }
.select-wrap .chev { position: absolute; right: 8px; top: 50%; transform: translateY(-50%); color: var(--muted); pointer-events: none; }
.icon-btn { display: inline-grid; place-items: center; width: 32px; height: 32px; border: 1px solid var(--border);
  background: transparent; color: var(--muted); border-radius: var(--r); cursor: pointer;
  transition: color .15s, border-color .15s, background .15s; }
.icon-btn:hover { color: var(--fg); border-color: var(--border-strong); }
.icon-btn.danger:hover { color: var(--bad); border-color: rgba(248,113,113,0.4); }
.add-btn { display: inline-flex; align-items: center; gap: 7px; align-self: flex-start; background: transparent;
  border: 1px dashed var(--border-strong); color: var(--muted); border-radius: var(--r); padding: 7px 12px;
  font-family: inherit; font-size: 12px; cursor: pointer; transition: color .15s, border-color .15s; }
.add-btn:hover { color: var(--fg); border-color: var(--fg); }

/* Buttons */
.actions { display: flex; gap: 9px; justify-content: flex-end; padding-top: 2px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 7px; padding: 9px 16px; border-radius: var(--r);
  font-family: inherit; font-size: 12.5px; font-weight: 500; cursor: pointer;
  border: 1px solid var(--border-strong); background: transparent; color: var(--fg);
  transition: background .15s, opacity .15s, transform .05s; }
.btn:active { transform: translateY(1px); }
.btn-ghost:hover { background: rgba(255,255,255,0.05); }
.btn-primary { background: var(--fg); color: #000; border-color: var(--fg); }
.btn-primary:hover { background: rgba(255,255,255,0.88); }
.btn-danger { border-color: rgba(248,113,113,0.5); color: var(--bad); }
.btn-danger:hover { background: rgba(248,113,113,0.12); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn[hidden] { display: none !important; }
.lock-pill { text-decoration: none; cursor: pointer; }
.lock-pill:hover { color: var(--fg); border-color: var(--border-strong); }

/* Collapsible block */
.collapse-toggle { display: inline-flex; align-items: center; gap: 8px; background: transparent; border: 0; padding: 0; margin: 0; cursor: pointer; color: inherit; font: inherit; }
.collapse-chev { color: var(--muted); transition: transform .18s ease; }
.block.open .collapse-chev { transform: rotate(180deg); }
.collapse-body { display: none; flex-direction: column; gap: 9px; }
.block.open .collapse-body { display: flex; }
.ghost-btn { display: inline-flex; align-items: center; gap: 6px; background: transparent; border: 1px solid var(--border);
  color: var(--muted); border-radius: 6px; padding: 4px 9px; font-family: inherit; font-size: 11px; cursor: pointer;
  transition: color .15s, border-color .15s; }
.ghost-btn:hover { color: var(--fg); border-color: var(--border-strong); }

/* Console */
.console-head { padding: 12px 14px; border-bottom: 1px solid var(--border); }
.status-chip { font-family: var(--mono); font-size: 10px; text-transform: uppercase; letter-spacing: 0.07em;
  padding: 3px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.status-chip.running { color: var(--warn); border-color: rgba(251,191,36,0.4); }
.status-chip.paused { color: var(--warn); border-color: rgba(251,191,36,0.4); }
.status-chip.done { color: var(--ok); border-color: rgba(74,222,128,0.4); }
.status-chip.error { color: var(--bad); border-color: rgba(248,113,113,0.4); }

.stats { display: grid; grid-template-columns: repeat(3,1fr); border-bottom: 1px solid var(--border); }
.stat { padding: 11px 14px; border-right: 1px solid var(--border); display: flex; flex-direction: column; gap: 3px; }
.stat:last-child { border-right: none; }
.stat-label { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.stat-value { font-family: var(--mono); font-size: 16px; font-weight: 500; }
.stat-sep { color: var(--muted-2); margin: 0 2px; }
.stat.ok .stat-value { color: var(--ok); }
.stat.bad .stat-value { color: var(--bad); }

.progress-track { height: 2px; background: rgba(255,255,255,0.08); }
.progress-fill { height: 100%; width: 0; background: var(--fg); transition: width .25s ease; }

.console { height: clamp(440px, calc(100vh - 232px), 760px); overflow-y: auto; padding: 8px; display: flex; flex-direction: column; gap: 2px; }
.console-empty { margin: auto; text-align: center; color: var(--muted-2); display: flex; flex-direction: column; align-items: center; gap: 8px; }
.console-empty p { margin: 0; font-size: 12.5px; }

.log { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; padding: 9px 11px; border-radius: 8px; border: 1px solid transparent; animation: logIn .16s ease; }
.log:hover { background: rgba(255,255,255,0.03); }
.log .ic { display: inline-flex; margin-top: 1px; }
.log-main { min-width: 0; display: flex; flex-direction: column; gap: 3px; }
.log-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.log .email { font-family: var(--mono); font-size: 12.5px; color: var(--fg); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.log-sub { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 11px; color: var(--muted); }
.log-sub .ts, .log-sub .via, .log-sub .dot { color: var(--muted-2); }
.log-sub .ts { font-family: var(--mono); }
.badge { flex-shrink: 0; font-size: 9.5px; text-transform: uppercase; letter-spacing: 0.07em; font-weight: 500;
  padding: 2px 7px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.log.sent .ic { color: var(--ok); }
.log.sent .badge { color: var(--ok); border-color: rgba(74,222,128,0.35); background: rgba(74,222,128,0.06); }
.log.failed .ic, .log.invalid .ic { color: var(--bad); }
.log.failed .badge, .log.invalid .badge { color: var(--bad); border-color: rgba(248,113,113,0.35); background: rgba(248,113,113,0.06); }
.log.failed .note, .log.invalid .note { color: var(--bad); }
.log.info .ic { color: var(--muted); }
.log.info .email { color: var(--muted); font-family: "IBM Plex Sans", sans-serif; }
@keyframes logIn { from { opacity: 0; transform: translateY(2px); } to { opacity: 1; transform: none; } }

/* Modal */
.modal[hidden] { display: none; }
.modal { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: 24px; background: rgba(0,0,0,0.72); backdrop-filter: blur(4px); animation: fade .15s ease; }
.modal-card { width: min(560px, 100%); max-height: 86vh; background: var(--surface); border: 1px solid var(--border-strong); border-radius: 12px; display: flex; flex-direction: column; overflow: hidden; animation: pop .16s ease; }
.modal-card.modal-lg { width: min(760px, 100%); height: min(82vh, 760px); }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 13px 15px; border-bottom: 1px solid var(--border); }
.modal-body { padding: 16px; overflow-y: auto; display: flex; flex-direction: column; gap: 12px; }
.modal-body.flush { padding: 0; flex: 1; }
.modal-foot { display: flex; justify-content: flex-end; gap: 9px; padding: 12px 15px; border-top: 1px solid var(--border); }
.modal-frame { flex: 1; width: 100%; border: 0; background: #fff; min-height: 320px; }
.modal-text { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop { from { opacity: 0; transform: translateY(6px) scale(.99); } to { opacity: 1; transform: none; } }

/* Test / DNS results */
.test-results { display: flex; flex-direction: column; gap: 7px; }
.test-loading { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 12.5px; padding: 6px 0; }
.tr { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: start; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; }
.tr-ic { display: inline-flex; margin-top: 1px; }
.tr.ok { border-color: rgba(74,222,128,0.3); } .tr.ok .tr-ic { color: var(--ok); }
.tr.warn { border-color: rgba(251,191,36,0.3); } .tr.warn .tr-ic { color: var(--warn); }
.tr.bad { border-color: rgba(248,113,113,0.3); } .tr.bad .tr-ic { color: var(--bad); }
.tr-label { font-family: var(--mono); font-size: 12px; color: var(--fg); word-break: break-word; }
.tr-msg { font-size: 11.5px; color: var(--muted); margin-top: 2px; line-height: 1.45; word-break: break-word; }
.spin { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%) translateY(10px); background: var(--surface-2);
  border: 1px solid var(--border-strong); color: var(--fg); padding: 10px 16px; border-radius: 8px; font-size: 12.5px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.6); opacity: 0; transition: opacity .2s, transform .2s; z-index: 70; }
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { border-color: rgba(248,113,113,0.5); }

.console::-webkit-scrollbar, textarea::-webkit-scrollbar { width: 7px; }
.console::-webkit-scrollbar-thumb, textarea::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 8px; }