/* KDP Sentinel — landing page. Brand: deep blue + orange (matches the icon). */
:root {
  --blue: #2b5aa6;
  --blue-deep: #1e3f76;
  --orange: #f5871f;
  --ink: #16213a;
  --text: #2c3650;
  --muted: #6b7691;
  --bg: #ffffff;
  --bg-soft: #f6f8fc;
  --border: #e6ebf3;
  --radius: 12px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { color: var(--ink); letter-spacing: -0.02em; line-height: 1.15; }
a { color: var(--blue); }
.accent { color: var(--orange); }

.btn {
  display: inline-block; background: var(--blue); color: #fff; font-weight: 650;
  text-decoration: none; padding: 12px 22px; border-radius: 999px;
  transition: transform 0.12s ease, background 0.12s ease;
}
.btn:hover { background: var(--blue-deep); transform: translateY(-1px); }
.btn-lg { font-size: 17px; padding: 15px 30px; box-shadow: 0 10px 28px rgba(43, 90, 166, 0.28); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* NAV */
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1080px; margin: 0 auto; padding: 18px 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; font-size: 18px; color: var(--ink); text-decoration: none; }
.brand img { border-radius: 7px; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-links a { color: var(--text); text-decoration: none; font-weight: 550; font-size: 15px; }
.nav-links a.btn { color: #fff; }
@media (max-width: 640px) { .nav-links a:not(.btn) { display: none; } }

/* HERO */
.hero { background: linear-gradient(180deg, var(--bg-soft), var(--bg)); padding: 56px 24px 40px; }
.hero-inner { max-width: 860px; margin: 0 auto; text-align: center; }
.eyebrow { display: inline-block; background: rgba(245, 135, 31, 0.12); color: #b9600a; font-weight: 650; font-size: 13px; padding: 6px 14px; border-radius: 999px; margin-bottom: 22px; }
.hero h1 { font-size: 46px; margin-bottom: 20px; }
@media (max-width: 640px) { .hero h1 { font-size: 32px; } }
.lede { font-size: 19px; color: var(--muted); max-width: 660px; margin: 0 auto 30px; }
.cta-row { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.cta-sub { font-size: 13px; color: var(--muted); }
.hero-shot { margin-top: 44px; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); box-shadow: 0 20px 50px rgba(22,33,58,.12); }
.hero-shot img { width: 100%; display: block; }

/* TRUST */
.trust { display: flex; flex-wrap: wrap; justify-content: center; gap: 28px; padding: 22px 24px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); color: var(--muted); font-size: 14px; font-weight: 550; }

/* SECTIONS */
section { padding: 64px 24px; }
section h2 { font-size: 32px; text-align: center; margin-bottom: 14px; }
.section-lede { text-align: center; color: var(--muted); max-width: 620px; margin: 0 auto 36px; font-size: 16px; }
.features, .how, .privacy, .final-cta, .gallery, .benefits { max-width: 1080px; margin: 0 auto; }
.features h2, .gallery h2, .benefits h2, .how h2 { margin-bottom: 36px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; background: var(--bg); transition: box-shadow 0.15s ease, transform 0.15s ease; }
.card:hover { box-shadow: 0 12px 32px rgba(22, 33, 58, 0.08); transform: translateY(-2px); }
.card .ico { font-size: 26px; margin-bottom: 10px; }
.card h3 { font-size: 17px; margin-bottom: 6px; }
.card p { font-size: 14px; color: var(--muted); }

/* GALLERY */
.gallery { text-align: center; }
.shots { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 640px) { .shots { grid-template-columns: 1fr; } }
.shot { margin: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; background: var(--bg-soft); }
.shot img { width: 100%; display: block; }
.shot figcaption { font-size: 13px; color: var(--muted); padding: 10px; border-top: 1px solid var(--border); }
/* Placeholder when a screenshot image is missing */
.hero-shot.placeholder img, .shot.placeholder img { display: none; }
.hero-shot.placeholder, .shot.placeholder { position: relative; min-height: 240px; display: grid; place-items: center; }
.hero-shot.placeholder::before, .shot.placeholder::before {
  content: "📸 screenshot"; color: var(--muted); font-size: 14px;
  border: 2px dashed var(--border); border-radius: var(--radius);
  padding: 40px 24px; width: calc(100% - 24px);
}
.shot-ph-label { display: none; }
.hero-shot.placeholder .shot-ph-label { display: block; position: absolute; bottom: 16px; font-size: 12px; color: var(--muted); }

/* BENEFITS */
.benefits { }
.bgrid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 640px) { .bgrid { grid-template-columns: 1fr; } }
.bcard { border-left: 3px solid var(--orange); background: var(--bg-soft); border-radius: 0 var(--radius) var(--radius) 0; padding: 20px 22px; }
.bcard h3 { font-size: 18px; margin-bottom: 6px; }
.bcard p { font-size: 14.5px; color: var(--text); }
.bcard em { color: var(--blue); font-style: italic; }

.disclaimer-note { font-size: 12px; color: var(--muted); max-width: 560px; margin: 22px auto 0; line-height: 1.5; }

/* HOW */
.how { background: var(--bg-soft); border-radius: 20px; }
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.steps li { display: flex; gap: 14px; }
.num { flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; background: var(--blue); color: #fff; font-weight: 700; display: grid; place-items: center; }
.steps h3 { font-size: 17px; margin-bottom: 4px; }
.steps p { font-size: 14.5px; color: var(--muted); }

/* PRIVACY */
.privacy { max-width: 740px; text-align: center; }
.privacy p { font-size: 16px; color: var(--text); margin-bottom: 16px; }

/* FINAL CTA */
.final-cta { text-align: center; }
.final-cta h2 { margin-bottom: 24px; }

/* FOOTER */
.foot { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; padding: 30px 24px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.foot a { color: var(--muted); }
.sep { opacity: 0.5; }