/* ── Nav (index only — starts transparent, blurs on scroll) ── */
nav {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: none;
  transition: background 0.3s, backdrop-filter 0.3s;
}
nav.scrolled {
  background: rgba(15,15,17,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.cta { color: var(--accent); }
.nav-links a.cta:hover { color: var(--accent-hover); }

@media (max-width: 640px) {
  .nav-links { display: none; }
}

/* ── Hero ────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 5rem;
}

.hero-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(220,80,60,0.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.mascot {
  font-size: 5rem;
  display: inline-block;
  animation: bob 3s ease-in-out infinite;
  margin-bottom: 1.2rem;
}

.hero-logo {
  font-size: 3.6rem;
  font-weight: 900;
  letter-spacing: -1.5px;
  line-height: 1;
  margin-bottom: 0.5rem;
}
.hero-logo .frank { color: var(--accent); }
.hero-logo .replies { color: var(--text); }

.hero-tagline {
  font-size: 1.2rem;
  color: var(--muted);
  font-weight: 400;
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
}

.hero-sub {
  font-size: 1rem;
  color: var(--muted-2);
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── How It Works ────────────────────────────────────────── */
#how-it-works { text-align: center; }

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
@media (max-width: 820px) {
  .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .steps { grid-template-columns: 1fr; }
}

/* ── Frank Score ─────────────────────────────────────────── */
#score { text-align: center; }

.score-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-bottom: 3rem;
}
@media (max-width: 640px) {
  .score-cards { grid-template-columns: 1fr; }
}

.score-demo {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 2rem;
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.demo-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--dim);
  margin-bottom: 0.75rem;
}

.demo-email {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 10px;
  padding: 1rem 1.2rem;
  font-size: 0.85rem;
  color: var(--muted-2);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}
.demo-email strong { color: var(--text); font-weight: 600; }

.score-bar-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.9rem;
}
.score-bar-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--muted-2);
  width: 60px;
  flex-shrink: 0;
}
.score-bar-track {
  flex: 1;
  height: 7px;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  overflow: hidden;
}
.score-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.score-bar-fill.animate { width: var(--target-width); }
.score-bar-val {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  width: 28px;
  text-align: right;
  flex-shrink: 0;
}

/* ── Privacy & Trust ─────────────────────────────────────── */
#privacy-trust { background: rgba(255,255,255,0.015); }

.trust-block {
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: 24px;
  padding: 3rem 2.5rem;
  text-align: center;
}

.trust-quote {
  font-size: 1.7rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.trust-quote em {
  font-style: normal;
  color: var(--accent);
}

.trust-quote-sub {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

.trust-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  text-align: left;
  margin-bottom: 2rem;
}
@media (max-width: 640px) {
  .trust-pillars { grid-template-columns: 1fr; }
  .trust-quote { font-size: 1.3rem; }
}

.pillar-icon { font-size: 1.6rem; margin-bottom: 0.6rem; }
.pillar-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.4rem; }
.pillar-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.55; }

.trust-link {
  font-size: 0.9rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}
.trust-link:hover { text-decoration: underline; }

/* ── Support ─────────────────────────────────────────────── */
#support { text-align: center; }

.support-mascot {
  font-size: 3rem;
  display: inline-block;
  margin-bottom: 1rem;
}

.support-heading {
  font-size: 1.9rem;
  font-weight: 900;
  letter-spacing: -0.4px;
  margin-bottom: 0.75rem;
}

.support-sub {
  font-size: 1rem;
  color: var(--muted);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.tip-options {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.tip-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 1.5rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}

.tip-card:hover {
  border-color: var(--card-border-hover);
  transform: translateY(-2px);
}

.tip-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tip-amount {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -1px;
}

.tip-desc {
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}