*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg:       #0a0a0a;
  --surface:  #111111;
  --surface2: #1a1a1a;
  --border:   #2a2a2a;
  --text:     #f0f0f0;
  --muted:    #888;
  --accent:   #fff;
  --green:    #2ecc71;
  --red:      #e74c3c;
  --yellow:   #f39c12;
  --t: .18s ease;
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Nav ─────────────────────────── */
nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: .8rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
}
.logo { display: flex; align-items: center; gap: .55rem; font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.logo-icon { color: var(--green); font-size: 1.2rem; }
.back-btn {
  color: var(--muted); text-decoration: none; font-size: .82rem;
  display: flex; align-items: center; gap: .4rem;
  padding: .35rem .85rem; border-radius: 6px; border: 1px solid var(--border);
  transition: var(--t);
}
.back-btn:hover { border-color: #555; color: var(--text); }

/* ── Main ─────────────────────────── */
main {
  flex: 1; max-width: 740px; width: 100%;
  margin: 0 auto; padding: 2.5rem 1.5rem 3rem;
  display: flex; flex-direction: column; gap: 1.25rem;
}

/* ── Hero ─────────────────────────── */
.hero { text-align: center; padding: .5rem 0 .25rem; }
.hero-badge {
  display: inline-flex; align-items: center; gap: .4rem;
  background: rgba(46,204,113,.1); color: var(--green);
  border: 1px solid rgba(46,204,113,.25); border-radius: 20px;
  font-size: .72rem; font-weight: 600; padding: .28rem .85rem;
  margin-bottom: .85rem; letter-spacing: .03em;
}
.hero h1 { font-size: 1.9rem; font-weight: 700; letter-spacing: -.02em; }
.hero p { color: var(--muted); margin-top: .45rem; font-size: .88rem; }

/* ── Tabs ─────────────────────────── */
.tabs {
  display: flex; gap: .35rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}
.tab {
  background: transparent; border: none; color: var(--muted);
  font-family: 'Poppins', sans-serif; font-size: .82rem; font-weight: 500;
  padding: .55rem .95rem; border-radius: 8px 8px 0 0;
  cursor: pointer; display: flex; align-items: center; gap: .4rem;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: var(--t);
}
.tab:hover { color: var(--text); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.hist-count {
  background: var(--surface2); color: var(--muted);
  font-size: .62rem; padding: .1rem .42rem; border-radius: 10px; min-width: 1.1rem; text-align: center;
}

/* ── Tab panes ────────────────────── */
.tab-pane { display: flex; flex-direction: column; gap: 1rem; }
.tab-pane.hidden { display: none; }

/* ── Card ─────────────────────────── */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.4rem;
}
.search-card { display: flex; flex-direction: column; gap: 1rem; }

/* ── Input ────────────────────────── */
.field-label {
  font-size: .78rem; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: .07em;
  display: flex; align-items: center; gap: .4rem; margin-bottom: .7rem;
}
.input-group { display: flex; gap: .7rem; }
.input-wrapper { position: relative; flex: 1; }
.input-icon {
  position: absolute; left: 1rem; top: 50%; transform: translateY(-50%);
  color: var(--muted); font-size: .88rem; pointer-events: none;
}
input[type="text"], textarea {
  width: 100%; background: var(--bg);
  border: 1px solid var(--border); border-radius: 9px;
  padding: .8rem 2.8rem .8rem 2.55rem;
  color: var(--text); font-family: 'Poppins', sans-serif; font-size: .9rem;
  transition: border-color var(--t);
}
input:focus, textarea:focus { outline: none; border-color: #444; }
input::placeholder, textarea::placeholder { color: var(--muted); }
input.v-ok  { border-color: rgba(46,204,113,.45); }
input.v-err { border-color: rgba(231,76,60,.45); }

/* Realtime dot */
.rt-dot {
  position: absolute; right: 1rem; top: 50%; transform: translateY(-50%);
  width: 8px; height: 8px; border-radius: 50%; background: transparent;
  transition: background var(--t), box-shadow var(--t);
}
.rt-dot.ok      { background: var(--green); box-shadow: 0 0 7px var(--green); }
.rt-dot.err     { background: var(--red);   box-shadow: 0 0 7px var(--red); }
.rt-dot.typing  { background: var(--yellow); }

/* Suggestion */
.sugg-hint {
  margin-top: .5rem; font-size: .78rem; color: var(--yellow);
  display: flex; align-items: center; gap: .4rem;
}
.sugg-hint.hidden { display: none; }
.sugg-link { cursor: pointer; text-decoration: underline; }

/* ── Buttons ──────────────────────── */
.btn {
  background: var(--accent); color: #000;
  border: none; border-radius: 9px;
  padding: .8rem 1.35rem;
  font-family: 'Poppins', sans-serif; font-size: .88rem; font-weight: 600;
  cursor: pointer; display: inline-flex; align-items: center; gap: .4rem;
  white-space: nowrap; transition: background var(--t), transform .1s;
}
.btn:hover { background: #ddd; }
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn-ghost {
  background: transparent; color: var(--muted);
  border: 1px solid var(--border); border-radius: 8px;
  padding: .45rem .9rem; font-family: 'Poppins', sans-serif;
  font-size: .8rem; cursor: pointer; display: inline-flex; align-items: center; gap: .4rem;
  transition: var(--t);
}
.btn-ghost:hover { border-color: #555; color: var(--text); }
.btn-ghost.sm { font-size: .74rem; padding: .35rem .75rem; }

.btn-sm {
  background: var(--surface2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: .48rem .9rem; font-family: 'Poppins', sans-serif;
  font-size: .78rem; cursor: pointer; display: inline-flex; align-items: center; gap: .35rem;
  transition: var(--t); white-space: nowrap;
}
.btn-sm:hover { border-color: #555; }

/* ── API key ──────────────────────── */
.api-toggle-wrap { margin-top: -.2rem; }
.api-toggle-btn {
  background: transparent; border: none; color: var(--muted);
  font-family: 'Poppins', sans-serif; font-size: .75rem;
  cursor: pointer; display: flex; align-items: center; gap: .35rem; padding: 0;
  transition: color var(--t);
}
.api-toggle-btn:hover { color: var(--text); }
.api-key-row {
  display: flex; gap: .5rem; margin-top: .6rem;
}
.api-key-row input { flex: 1; padding: .55rem .9rem; font-size: .82rem; }
.api-key-row.hidden { display: none; }

/* ── Results card ─────────────────── */
.results-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 14px; overflow: hidden;
  animation: fadeUp .22s ease;
}
.results-card.hidden { display: none; }
@keyframes fadeUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:none; } }

.results-header {
  padding: 1rem 1.4rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
}
.status-badge {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .3rem .85rem; border-radius: 20px; font-size: .8rem; font-weight: 600;
}
.badge-valid   { background: rgba(46,204,113,.1); color: var(--green);  border: 1px solid rgba(46,204,113,.3); }
.badge-invalid { background: rgba(231,76,60,.1);  color: var(--red);    border: 1px solid rgba(231,76,60,.3); }
.badge-risky   { background: rgba(243,156,18,.1); color: var(--yellow); border: 1px solid rgba(243,156,18,.3); }
.results-email { font-weight: 600; font-size: .95rem; word-break: break-all; }

/* Score bar */
.score-wrap {
  padding: .85rem 1.4rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: .9rem;
}
.score-lbl { font-size: .7rem; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; min-width: 2.5rem; }
.score-track { flex: 1; height: 6px; background: var(--border); border-radius: 3px; overflow: hidden; }
.score-fill { height: 100%; width: 0; border-radius: 3px; background: var(--green); transition: width .7s cubic-bezier(.4,0,.2,1), background .4s; }
.score-val { font-size: .82rem; font-weight: 600; min-width: 2.8rem; text-align: right; }

/* Detail grid */
.results-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.result-item {
  padding: .85rem 1.2rem;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  transition: background var(--t);
}
.result-item:hover { background: var(--surface2); }
.result-key {
  font-size: .68rem; color: var(--muted); text-transform: uppercase;
  letter-spacing: .06em; margin-bottom: .25rem;
  display: flex; align-items: center; gap: .3rem;
}
.result-value { font-size: .88rem; font-weight: 500; }
.result-value.v-true  { color: var(--green); }
.result-value.v-false { color: var(--red); }
.result-value.v-warn  { color: var(--yellow); }
.result-value.v-muted { color: var(--muted); font-style: italic; }
.result-value.v-sugg  { color: var(--yellow); font-size: .8rem; }

.result-actions {
  display: flex; gap: .5rem; padding: .85rem 1.2rem;
  border-top: 1px solid var(--border);
}

/* ── Batch ────────────────────────── */
.batch-ta { resize: vertical; min-height: 140px; padding: .9rem; font-size: .85rem; line-height: 1.8; border-radius: 9px; }
.batch-bar {
  display: flex; align-items: center; justify-content: space-between;
  margin-top: .75rem; flex-wrap: wrap; gap: .5rem;
}
.batch-count { font-size: .8rem; color: var(--muted); }
.batch-results.hidden { display: none; }
.batch-results { display: flex; flex-direction: column; gap: .75rem; }
.batch-summary { display: flex; gap: .65rem; flex-wrap: wrap; }
.sum-pill {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .28rem .8rem; border-radius: 20px; font-size: .76rem; font-weight: 600;
}
.sum-valid   { background: rgba(46,204,113,.1); color: var(--green);  border: 1px solid rgba(46,204,113,.25); }
.sum-invalid { background: rgba(231,76,60,.1);  color: var(--red);    border: 1px solid rgba(231,76,60,.25); }
.sum-risky   { background: rgba(243,156,18,.1); color: var(--yellow); border: 1px solid rgba(243,156,18,.25); }
.sum-total   { background: var(--surface2); color: var(--muted); border: 1px solid var(--border); }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 10px; }
.btable { width: 100%; border-collapse: collapse; font-size: .83rem; }
.btable th {
  padding: .6rem 1rem; text-align: left;
  font-size: .67rem; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.btable td { padding: .65rem 1rem; border-bottom: 1px solid var(--border); }
.btable tr:last-child td { border-bottom: none; }
.btable tr:hover td { background: var(--surface2); }
.bt-email { font-family: monospace; font-size: .81rem; word-break: break-all; }

/* ── History ──────────────────────── */
.hist-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: .75rem; }
.hist-sub { font-size: .8rem; color: var(--muted); }
.hist-item {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: .75rem 1rem;
  display: flex; align-items: center; gap: .75rem;
  margin-bottom: .5rem; flex-wrap: wrap; transition: var(--t);
}
.hist-item:hover { border-color: #3a3a3a; background: var(--surface2); }
.hist-email { flex: 1; font-size: .88rem; font-weight: 500; word-break: break-all; }
.hist-meta { font-size: .72rem; color: var(--muted); }
.hist-re {
  background: transparent; border: 1px solid var(--border); border-radius: 6px;
  color: var(--muted); font-family: 'Poppins', sans-serif; font-size: .72rem;
  padding: .25rem .6rem; cursor: pointer; transition: var(--t);
  display: flex; align-items: center; gap: .3rem;
}
.hist-re:hover { border-color: #555; color: var(--text); }

.empty-state {
  text-align: center; padding: 3rem 1rem; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; gap: .75rem;
}
.empty-state.hidden { display: none; }
.empty-state i { font-size: 2.4rem; opacity: .25; }
.empty-state p { font-size: .88rem; }

/* ── Toast ────────────────────────── */
.toast {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  background: var(--surface2); border: 1px solid var(--border);
  color: var(--text); padding: .65rem 1.1rem; border-radius: 10px;
  font-size: .82rem; font-weight: 500;
  box-shadow: 0 4px 24px rgba(0,0,0,.45);
  transform: translateY(14px); opacity: 0;
  transition: transform .22s ease, opacity .22s ease;
  z-index: 200; pointer-events: none; max-width: 280px;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* ── Footer ───────────────────────── */
footer {
  background: var(--surface); border-top: 1px solid var(--border);
  text-align: center; padding: 1rem; color: var(--muted); font-size: .78rem;
}
footer a { color: #777; text-decoration: none; }
footer a:hover { color: var(--text); }

/* ── Responsive ───────────────────── */
@media (max-width: 600px) {
  .input-group { flex-direction: column; }
  .hero h1 { font-size: 1.5rem; }
  main { padding: 1.5rem 1rem 2.5rem; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .batch-bar { flex-direction: column; align-items: flex-start; }
}