:root {
  --blue: #0b5cd6;
  --blue-dark: #0846a8;
  --teal: #0fb5ae;
  --ink: #15202b;
  --muted: #5b6b7b;
  --line: #e3e8ef;
  --surface: #f5f7fa;
  --surface-2: #eef2f7;
  --white: #ffffff;
  --good: #1aa56b;
  --warn: #c47f17;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(21, 32, 43, 0.05), 0 8px 24px rgba(21, 32, 43, 0.06);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.5;
}

.wrap { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 20px; }

/* Top bar */
.topbar {
  border-bottom: 1px solid var(--line);
  background: var(--white);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: baseline; gap: 8px; }
.logo-dot {
  width: 12px; height: 12px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  align-self: center;
}
.logo-text { font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.logo-sub { color: var(--muted); font-size: 13px; }
.topnav { color: var(--muted); font-size: 13px; }

/* Hero */
.hero { padding: 56px 0 28px; }
.hero h1 {
  font-size: 34px; line-height: 1.15; letter-spacing: -0.02em;
  margin: 0 0 12px;
}
.lede { color: var(--muted); font-size: 17px; max-width: 640px; margin: 0 0 28px; }

.search { display: flex; gap: 10px; }
#url-input {
  flex: 1; padding: 14px 16px; font-size: 16px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--white); color: var(--ink); outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
#url-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(11, 92, 214, 0.12);
}
#submit-btn {
  padding: 14px 22px; font-size: 16px; font-weight: 600;
  color: var(--white); background: var(--blue); border: none;
  border-radius: var(--radius); cursor: pointer;
  transition: background 0.15s, transform 0.05s;
  white-space: nowrap;
}
#submit-btn:hover { background: var(--blue-dark); }
#submit-btn:active { transform: translateY(1px); }
#submit-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.hint { color: var(--muted); font-size: 13px; margin: 12px 2px 0; }

/* Status / loading / error */
.status { margin: 24px 0; padding: 16px 18px; border-radius: var(--radius); font-size: 15px; }
.status.loading { background: var(--surface); color: var(--muted); display: flex; align-items: center; gap: 12px; }
.status.error { background: #fdecea; color: #b3261e; border: 1px solid #f6c9c4; }
.spinner {
  width: 18px; height: 18px; border-radius: 50%;
  border: 2px solid var(--line); border-top-color: var(--blue);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Result */
.result { margin: 8px 0 48px; display: grid; gap: 18px; }
.card {
  background: var(--white); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px 22px; box-shadow: var(--shadow);
}
.card h2 {
  font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted); margin: 0 0 14px; font-weight: 700;
}
.brand-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.brand-name { font-size: 22px; font-weight: 700; margin: 0; }
.brand-meta { color: var(--muted); font-size: 14px; margin: 6px 0 0; }
.brand-summary { margin: 12px 0 0; }

/* chips */
.chip {
  display: inline-block; font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.04em;
  padding: 3px 8px; border-radius: 999px;
}
.chip-tier { background: var(--surface-2); color: var(--muted); }

/* audience fit */
.fit-row { padding: 12px 0; border-top: 1px solid var(--line); }
.fit-row:first-of-type { border-top: none; }
.fit-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.fit-name { font-weight: 600; }
.fit-score { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--blue); }
.bar { height: 7px; border-radius: 999px; background: var(--surface-2); margin: 8px 0 6px; overflow: hidden; }
.bar > span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--blue), var(--teal)); }
.fit-why { color: var(--muted); font-size: 14px; }

/* opportunity */
.tier {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 16px; font-weight: 700; padding: 8px 14px;
  border-radius: 999px; text-transform: capitalize;
}
.tier-dot { width: 10px; height: 10px; border-radius: 50%; }
.tier-high { background: rgba(26, 165, 107, 0.12); color: var(--good); }
.tier-high .tier-dot { background: var(--good); }
.tier-medium { background: rgba(196, 127, 23, 0.12); color: var(--warn); }
.tier-medium .tier-dot { background: var(--warn); }
.tier-low { background: var(--surface-2); color: var(--muted); }
.tier-low .tier-dot { background: var(--muted); }
.opp-assume { color: var(--muted); font-size: 14px; margin-top: 14px; }

/* proof */
.proof-headline { font-size: 18px; font-weight: 600; margin: 0 0 6px; }
.proof-value { color: var(--good); font-weight: 700; }
.proof-why { color: var(--muted); font-size: 14px; margin-top: 8px; }
.proof-link { margin: 12px 0 0; font-size: 14px; }
.proof-link a { color: var(--blue); text-decoration: none; font-weight: 600; }
.proof-link a:hover { text-decoration: underline; }

/* brand styling */
.style-grid { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; }
.style-logo {
  width: 96px; height: 64px; flex: none;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 10px; padding: 8px;
  background: var(--surface);
}
.style-logo img { max-width: 100%; max-height: 100%; object-fit: contain; }
.style-meta { flex: 1; min-width: 200px; }
.swatches { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.swatch {
  width: 30px; height: 30px; border-radius: 8px;
  border: 1px solid rgba(21, 32, 43, 0.12);
}

/* tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.tab-btn {
  padding: 10px 16px; font-size: 14px; font-weight: 600;
  background: none; border: none; color: var(--muted); cursor: pointer;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab-btn:hover { color: var(--ink); }
.tab-btn.active { color: var(--blue); border-bottom-color: var(--blue); }
.tab-panel { padding-top: 14px; }

/* draft */
.draft-subject { font-weight: 600; margin: 0 0 8px; }
.draft-body { white-space: pre-wrap; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; font-size: 15px; }
.copy-btn {
  margin-top: 12px; padding: 9px 16px; font-size: 14px; font-weight: 600;
  background: var(--white); color: var(--blue); border: 1px solid var(--blue);
  border-radius: 10px; cursor: pointer;
}
.copy-btn:hover { background: rgba(11, 92, 214, 0.06); }

.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.
/* Explainer / pipeline flowchart */
.explainer {
  margin: 8px 0 48px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}
.section-title { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 8px; }
.section-sub { color: var(--muted); font-size: 15px; max-width: 680px; margin: 0 0 24px; }
.section-sub em { color: var(--ink); font-style: normal; font-weight: 600; }

.flow { display: flex; align-items: stretch; gap: 10px; flex-wrap: wrap; }
.flow-node {
  flex: 1 1 0; min-width: 150px;
  background: var(--white); border: 1px solid var(--line);
  border-radius: 10px; padding: 14px 16px;
  display: flex; flex-direction: column; gap: 6px;
}
.flow-node-active {
  border-color: transparent;
  background: linear-gradient(135deg, rgba(11, 92, 214, 0.08), rgba(15, 181, 174, 0.1));
  box-shadow: inset 0 0 0 2px var(--blue);
}
.flow-here {
  align-self: flex-start; font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em; color: var(--blue);
  background: rgba(11, 92, 214, 0.1); padding: 2px 7px; border-radius: 999px;
}
.flow-tool { font-weight: 700; font-size: 15px; }
.flow-badge {
  align-self: flex-start; font-weight: 700; font-size: 15px;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.flow-desc { color: var(--muted); font-size: 13px; line-height: 1.4; }
.flow-arrow { align-self: center; color: var(--blue); font-size: 20px; font-weight: 700; }

.flow-inner {
  margin-top: 16px; padding: 16px;
  background: var(--white); border: 1px dashed var(--line); border-radius: 10px;
}
.flow-inner-label {
  display: inline-block; font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.06em; color: var(--blue);
  margin-bottom: 12px;
}
.flow-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.flow-steps li {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 999px; padding: 7px 14px 7px 8px; font-size: 13px; font-weight: 600;
}
.flow-steps li em { color: var(--muted); font-style: normal; font-weight: 400; }
.step-n {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%; flex: none;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  color: var(--white); font-size: 11px; font-weight: 700;
}
.explainer-foot { color: var(--muted); font-size: 14px; margin: 18px 0 0; }
.explainer-foot .chip { vertical-align: middle; }

@media (max-width: 640px) {
  .flow { flex-direction: column; align-items: stretch; }
  .flow-arrow { transform: rotate(90deg); }
}

/* footer */
.footer { border-top: 1px solid var(--line); padding: 18px 0; margin-top: auto; }
.footer .wrap { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }
.footer-right { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.footer a { color: var(--blue); text-decoration: none; font-weight: 600; }
.footer a:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

@media (max-width: 560px) {
  .search { flex-direction: column; }
  .hero h1 { font-size: 28px; }
}