/* SEO Adam Dùng AI — theme Vàng Hổ Phách / Nền Đen Than
   Matte Charcoal #111111 · Warm Amber Gold #D89B2B · Warm Cream #F8F4E8
   Pure White #FFFFFF · Card Charcoal #181818 · Tech Aqua #2FD0C8 */
:root {
  --bg: #111111;
  --card: #181818;
  --gold: #D89B2B;
  --gold-alt: #E59A2E;
  --cream: #F8F4E8;
  --white: #FFFFFF;
  --aqua: #2FD0C8;
  --muted: #9a9484;
  --line: #2c2c2c;
  --danger: #e05a4e;
  --ok: #4ecb71;
  --radius: 14px;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--cream);
  font-family: "Roboto", "Be Vietnam Pro", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header / Nav ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(17,17,17,.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(6px);
}
.topbar-inner {
  max-width: 1180px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--white); font-weight: 900; }
.brand .dot {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--gold); color: #111; font-weight: 900;
  display: inline-flex; align-items: center; justify-content: center;
}
.brand small { color: var(--gold); font-weight: 700; letter-spacing: .18em; font-size: 11px; display: block; }
nav.main { display: flex; gap: 4px; flex-wrap: wrap; }
nav.main a {
  color: var(--cream); padding: 8px 12px; border-radius: 8px; font-weight: 500; font-size: 14px;
}
nav.main a:hover, nav.main a.active { background: #222; color: var(--gold); text-decoration: none; }
nav.main a.active { box-shadow: inset 0 0 0 1px var(--gold); }
.userbox { margin-left: auto; display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.userbox b { color: var(--cream); }

/* ---------- Layout ---------- */
main { flex: 1; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 32px 20px 60px; }
.wrap.narrow { max-width: 760px; }

.eyebrow {
  color: var(--gold); font-weight: 700; text-transform: uppercase;
  letter-spacing: .18em; font-size: 12px; margin: 0 0 10px;
}
h1 { color: var(--white); font-weight: 900; font-size: 34px; line-height: 1.25; margin: 0 0 12px; }
h1 .gold, h2 .gold { color: var(--gold); }
h2 { color: var(--white); font-weight: 900; font-size: 22px; margin: 34px 0 14px; }
h3 { color: var(--white); font-weight: 700; font-size: 17px; margin: 20px 0 10px; }
.lead { color: var(--cream); font-size: 16px; max-width: 720px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* ---------- Cards ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 8px 8px 0 rgba(216,155,43,.12);
}
.card.gold-border { border: 2px solid var(--gold); }
.grid { display: grid; gap: 16px; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid.cols-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 900px) {
  .grid.cols-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid.cols-3, .grid.cols-2 { grid-template-columns: 1fr; }
}
.tool-card .icon {
  width: 44px; height: 44px; border-radius: 12px; background: var(--gold);
  color: #111; font-weight: 900; font-size: 20px;
  display: inline-flex; align-items: center; justify-content: center; margin-bottom: 12px;
}
.tool-card h3 { margin: 0 0 8px; }
.tool-card p { margin: 0 0 14px; color: var(--cream); font-size: 14px; }
.badge-soon {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .1em;
  color: var(--aqua); border: 1px solid var(--aqua); border-radius: 999px; padding: 2px 10px;
}

/* ---------- Buttons / forms ---------- */
.btn {
  display: inline-block; border: none; cursor: pointer;
  background: var(--gold); color: #111; font-weight: 700; font-size: 15px;
  padding: 11px 22px; border-radius: 10px; font-family: inherit;
}
.btn:hover { background: var(--gold-alt); text-decoration: none; color: #111; }
.btn.ghost { background: transparent; color: var(--gold); box-shadow: inset 0 0 0 1px var(--gold); }
.btn.ghost:hover { background: rgba(216,155,43,.12); }
.btn.danger { background: transparent; color: var(--danger); box-shadow: inset 0 0 0 1px var(--danger); }
.btn.small-btn { padding: 7px 14px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
label { display: block; font-weight: 500; margin: 12px 0 6px; color: var(--cream); }
input[type=text], input[type=email], input[type=url], select, textarea {
  width: 100%; background: #0d0d0d; color: var(--cream);
  border: 1px solid var(--line); border-radius: 10px;
  padding: 11px 14px; font-size: 15px; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--gold); }
.hint { font-size: 13px; color: var(--muted); margin-top: 6px; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* ---------- Alerts ---------- */
.alert {
  border-radius: 10px; padding: 14px 16px; margin: 16px 0; font-size: 14px;
  border: 1px solid var(--line); background: #1c1c1c;
}
.alert.error { border-color: var(--danger); background: rgba(224,90,78,.08); }
.alert.warn { border-color: var(--gold); background: rgba(216,155,43,.08); }
.alert.ok { border-color: var(--ok); background: rgba(78,203,113,.08); }
.alert.info { border-color: var(--aqua); background: rgba(47,208,200,.07); }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--gold); font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
tr:hover td { background: rgba(216,155,43,.04); }

/* ---------- Opp cards / pills ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0; }
.filter-btn {
  background: #1c1c1c; color: var(--cream); border: 1px solid var(--line);
  border-radius: 999px; padding: 8px 16px; cursor: pointer; font-size: 13px; font-weight: 500;
  font-family: inherit;
}
.filter-btn.active { background: var(--gold); color: #111; border-color: var(--gold); font-weight: 700; }
.filter-btn .count { opacity: .75; font-size: 12px; }
.opp-keyword { color: var(--white); font-weight: 700; font-size: 16px; margin: 0 0 6px; }
.pill {
  display: inline-block; font-size: 12px; font-weight: 700; border-radius: 999px;
  padding: 3px 11px; margin: 2px 4px 2px 0;
}
.pill.kd-low { background: rgba(78,203,113,.15); color: var(--ok); border: 1px solid var(--ok); }
.pill.kd-mid { background: rgba(216,155,43,.12); color: var(--gold); border: 1px solid var(--gold); }
.pill.kd-high { background: rgba(224,90,78,.12); color: var(--danger); border: 1px solid var(--danger); }
.pill.cat { background: #222; color: var(--cream); border: 1px solid var(--line); }
.pill.intent { background: rgba(47,208,200,.1); color: var(--aqua); border: 1px solid var(--aqua); }
.opp-title { font-size: 13px; color: var(--cream); margin: 8px 0; }
.opp-why { font-size: 13px; color: var(--muted); margin: 8px 0 0; }

/* ---------- Quota bars ---------- */
.quota-bar { height: 10px; background: #262626; border-radius: 999px; overflow: hidden; margin: 8px 0 4px; }
.quota-bar > span { display: block; height: 100%; background: var(--gold); border-radius: 999px; }
.quota-bar > span.full { background: var(--danger); }
.quota-nums { font-size: 13px; color: var(--muted); }

/* ---------- Footer ---------- */
footer { border-top: 5px solid var(--gold); margin-top: 40px; }
.foot-inner {
  max-width: 1180px; margin: 0 auto; padding: 26px 20px;
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center;
}
.foot-wordmark { color: var(--gold); font-weight: 900; letter-spacing: .12em; font-size: 14px; }
.spin { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--gold); border-top-color: transparent; border-radius: 50%; animation: sp 0.8s linear infinite; vertical-align: -3px; margin-right: 8px; }
@keyframes sp { to { transform: rotate(360deg); } }
.empty { text-align: center; padding: 44px 20px; color: var(--muted); }
.empty .big { font-size: 40px; margin-bottom: 10px; }