/* ============================================================
   KMESS — kmess.css
   Landing page dedicada · prefixo km-
   ============================================================ */

:root {
  --km-bg:           #0a0a0a;
  --km-bg-alt:       #0f0f0f;
  --km-card:         #1a1a1a;
  --km-card-hover:   #1f1f1f;
  --km-gold:         #c9a84c;
  --km-gold-light:   #e2c97e;
  --km-gold-dim:     rgba(201,168,76,.12);
  --km-text:         #f2f0eb;
  --km-text-muted:   #b8b8b8;
  --km-text-faint:   #8a8a8a;
  --km-border:       rgba(255,255,255,.08);
  --km-border-s:     rgba(255,255,255,.14);
  --km-serif:        'Playfair Display', Georgia, serif;
  --km-sans:         'Poppins', 'Segoe UI', system-ui, sans-serif;
  --km-radius:       10px;
  --km-container:    1140px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 72px; }

body {
  background: var(--km-bg);
  color: var(--km-text);
  font-family: var(--km-sans);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { text-decoration: none; }
ul { list-style: none; }

/* ── CONTAINER ─────────────────────────────────────────────── */
.km-container {
  width: 100%;
  max-width: var(--km-container);
  margin: 0 auto;
  padding: 0 32px;
}

/* ── BUTTONS ────────────────────────────────────────────────── */
.km-btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--km-sans); font-size: 13px; font-weight: 500;
  padding: 11px 24px; border-radius: 6px;
  cursor: pointer; border: none;
  transition: opacity .2s, background .2s, transform .18s;
  white-space: nowrap; letter-spacing: .02em;
}
.km-btn--gold {
  background: var(--km-gold); color: #0a0a0a;
}
.km-btn--gold:hover { opacity: .88; transform: translateY(-1px); }

.km-btn--ghost {
  background: transparent;
  border: 1px solid var(--km-border-s);
  color: var(--km-text-muted);
}
.km-btn--ghost:hover { border-color: rgba(255,255,255,.3); color: var(--km-text); }

.km-btn--lg { font-size: 14px; padding: 14px 30px; }

/* ── SECTION LABELS / TITLES ─────────────────────────────────── */
.km-section-label {
  font-family: var(--km-sans); font-size: 10px; font-weight: 500;
  letter-spacing: 3.5px; text-transform: uppercase;
  color: var(--km-gold); margin-bottom: 14px;
}

.km-section-title {
  font-family: var(--km-serif); font-size: clamp(28px, 4vw, 40px);
  font-weight: 700; line-height: 1.2;
  color: var(--km-text); margin-bottom: 16px;
}

.km-section-desc {
  font-size: 15px; color: var(--km-text-muted);
  max-width: 540px; line-height: 1.8;
}

.km-section-header {
  text-align: center; margin-bottom: 60px;
}
.km-section-header .km-section-desc { margin: 0 auto; }

/* ── NAV ────────────────────────────────────────────────────── */
.km-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 800;
  border-bottom: 1px solid transparent;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
}
.km-nav--scrolled {
  background: rgba(10,10,10,.85);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--km-border);
}

.km-nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--km-container); margin: 0 auto;
  padding: 18px 32px;
}

.km-nav-brand {
  display: flex; align-items: center; gap: 10px;
}
.km-nav-icon { width: 28px; height: 28px; }
.km-nav-logo { height: 20px; width: auto; }

.km-nav-actions {
  display: flex; align-items: center; gap: 24px;
}
.km-nav-link {
  font-size: 12.5px; color: var(--km-text-muted);
  transition: color .2s; font-weight: 400;
}
.km-nav-link:hover { color: var(--km-text); }

/* ── HERO ───────────────────────────────────────────────────── */
.km-hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 120px 0 80px;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, rgba(201,168,76,.06) 0%, transparent 70%),
    var(--km-bg);
}

.km-hero-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: center;
}

.km-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(201,168,76,.1); border: 1px solid rgba(201,168,76,.25);
  color: var(--km-gold); font-size: 11.5px; font-weight: 500;
  padding: 6px 14px; border-radius: 20px;
  letter-spacing: .03em; margin-bottom: 28px;
}

.km-hero-title {
  font-family: var(--km-serif);
  font-size: clamp(36px, 5vw, 58px);
  font-weight: 700; line-height: 1.15;
  color: var(--km-text); margin-bottom: 22px;
}
.km-hero-title em {
  font-style: italic; color: var(--km-gold-light);
}

.km-hero-sub {
  font-size: 16px; color: var(--km-text-muted);
  line-height: 1.8; max-width: 460px;
  margin-bottom: 36px;
}

.km-hero-actions {
  display: flex; align-items: center; gap: 14px;
  flex-wrap: wrap; margin-bottom: 40px;
}

.km-hero-meta {
  display: flex; align-items: center; gap: 6px;
  font-size: 11.5px; color: var(--km-text-faint);
}
.km-hero-brand-link {
  color: var(--km-text-muted); border-bottom: 1px solid var(--km-border-s);
  transition: color .2s;
}
.km-hero-brand-link:hover { color: var(--km-gold); }

/* ── BROWSER MOCKUP ─────────────────────────────────────────── */
.km-browser {
  background: #1c1c1c;
  border-radius: var(--km-radius);
  overflow: hidden;
  border: 1px solid var(--km-border-s);
  box-shadow: 0 40px 80px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.04);
}

.km-browser-bar {
  display: flex; align-items: center; gap: 6px;
  padding: 10px 14px;
  background: #252525;
  border-bottom: 1px solid var(--km-border);
}
.km-browser-dot {
  width: 10px; height: 10px; border-radius: 50%;
}
.km-browser-dot:nth-child(1) { background: #ff5f57; }
.km-browser-dot:nth-child(2) { background: #ffbd2e; }
.km-browser-dot:nth-child(3) { background: #28c940; }

.km-browser-url {
  font-size: 11px; color: rgba(255,255,255,.35);
  font-family: var(--km-sans);
  background: rgba(255,255,255,.06);
  padding: 3px 14px; border-radius: 20px;
  margin-left: 8px; letter-spacing: .01em;
}

.km-browser-img {
  width: 100%; display: block; object-fit: cover;
}

.km-browser--lg {
  max-width: 900px; margin: 0 auto;
}

.km-hero-visual .km-browser-body {
  max-height: 420px; overflow: hidden;
}

.km-browser--lg .km-browser-body {
  max-height: 540px; overflow: hidden;
}

/* ── TRUST STRIP ─────────────────────────────────────────────── */
.km-trust {
  background: var(--km-bg-alt);
  border-top: 1px solid var(--km-border);
  border-bottom: 1px solid var(--km-border);
  padding: 20px 0;
}

.km-trust-list {
  display: flex; align-items: center; justify-content: center;
  gap: 0; flex-wrap: wrap;
}

.km-trust-item {
  display: flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--km-text-muted);
  font-weight: 400; padding: 8px 24px;
  white-space: nowrap;
}

.km-trust-sep {
  width: 1px; height: 18px;
  background: var(--km-border-s);
  flex-shrink: 0;
}

/* ── PROBLEM ────────────────────────────────────────────────── */
.km-problem {
  padding: 100px 0;
  background: var(--km-bg);
}

.km-problem-inner { max-width: 860px; margin: 0 auto; text-align: center; }

.km-problem-statement {
  font-family: var(--km-serif);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700; line-height: 1.25;
  color: var(--km-text); margin-bottom: 20px;
}

.km-problem-sub {
  font-size: 16px; color: var(--km-text-muted);
  line-height: 1.8; margin-bottom: 56px;
}

.km-pain-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  text-align: left;
}

.km-pain-card {
  background: var(--km-card);
  border: 1px solid var(--km-border);
  border-radius: var(--km-radius);
  padding: 28px;
}

.km-pain-icon {
  display: block;
  font-size: 18px; font-style: normal;
  color: #c0392b; margin-bottom: 14px;
  font-weight: 700;
}

.km-pain-card h3 {
  font-family: var(--km-sans); font-size: 14px; font-weight: 600;
  color: var(--km-text); margin-bottom: 8px; letter-spacing: .01em;
}

.km-pain-card p {
  font-size: 13px; color: var(--km-text-faint); line-height: 1.7;
}

/* ── FEATURES ───────────────────────────────────────────────── */
.km-features {
  padding: 100px 0;
  background: var(--km-bg-alt);
  border-top: 1px solid var(--km-border);
  border-bottom: 1px solid var(--km-border);
}

.km-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--km-border);
  border: 1px solid var(--km-border);
  border-radius: var(--km-radius);
  overflow: hidden;
}

.km-feat-card {
  background: var(--km-bg-alt);
  padding: 36px 32px;
  transition: background .2s;
}
.km-feat-card:hover { background: var(--km-card-hover); }

.km-feat-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--km-gold-dim);
  display: flex; align-items: center; justify-content: center;
  color: var(--km-gold);
  margin-bottom: 20px;
}

.km-feat-title {
  font-size: 15px; font-weight: 600;
  color: var(--km-text); margin-bottom: 10px;
  letter-spacing: .01em;
}

.km-feat-desc {
  font-size: 13px; color: var(--km-text-faint);
  line-height: 1.75;
}

/* ── SHOWCASE ───────────────────────────────────────────────── */
.km-showcase {
  padding: 100px 0;
  background: var(--km-bg);
}

/* ── TECH DIFFERENTIALS ─────────────────────────────────────── */
.km-tech {
  padding: 100px 0;
  background: var(--km-bg-alt);
  border-top: 1px solid var(--km-border);
  border-bottom: 1px solid var(--km-border);
}

.km-tech-inner {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start;
}

.km-tech-list {
  display: flex; flex-direction: column; gap: 0;
}

.km-tech-item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--km-border);
}
.km-tech-item:first-child { border-top: 1px solid var(--km-border); }
.km-tech-item svg { flex-shrink: 0; margin-top: 3px; }

.km-tech-item div {
  display: flex; flex-direction: column; gap: 3px;
}
.km-tech-item strong {
  font-size: 13.5px; font-weight: 600; color: var(--km-text);
  display: block;
}
.km-tech-item span {
  font-size: 12.5px; color: var(--km-text-faint); line-height: 1.6;
}

/* ── CTA SECTION ────────────────────────────────────────────── */
.km-cta-section {
  padding: 120px 0;
  background:
    radial-gradient(ellipse 70% 60% at 50% 100%, rgba(201,168,76,.08) 0%, transparent 70%),
    var(--km-bg);
  text-align: center;
}

.km-cta-inner { max-width: 600px; margin: 0 auto; }

.km-cta-logo {
  height: 32px; width: auto; margin: 0 auto 28px;
}

.km-cta-title {
  font-family: var(--km-serif);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 700; line-height: 1.2;
  color: var(--km-text); margin-bottom: 16px;
}

.km-cta-sub {
  font-size: 15px; color: var(--km-text-muted);
  line-height: 1.8; margin-bottom: 36px;
}

.km-cta-note {
  margin-top: 20px;
  font-size: 12.5px; color: var(--km-text-faint);
}
.km-cta-note a {
  color: var(--km-text-muted);
  border-bottom: 1px solid var(--km-border-s);
  transition: color .2s;
}
.km-cta-note a:hover { color: var(--km-gold); }

/* ── FOOTER ─────────────────────────────────────────────────── */
.km-footer {
  background: var(--km-bg-alt);
  border-top: 1px solid var(--km-border);
  padding: 40px 0;
}

.km-footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 16px;
}

.km-footer-brand {
  display: flex; align-items: center; gap: 10px;
}
.km-footer-icon { width: 26px; height: 26px; }
.km-footer-logo { height: 18px; width: auto; }

.km-footer-text {
  font-size: 12px; color: var(--km-text-faint);
}
.km-footer-link {
  color: var(--km-text-muted); transition: color .2s;
}
.km-footer-link:hover { color: var(--km-gold); }

.km-footer-copy {
  font-size: 11.5px; color: var(--km-text-faint);
}

/* ── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .km-hero-inner      { grid-template-columns: 1fr; gap: 48px; }
  .km-hero            { min-height: auto; padding: 130px 0 70px; }
  .km-hero-visual     { order: -1; }
  .km-hero-sub        { max-width: 100%; }
  .km-tech-inner      { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 768px) {
  .km-container         { padding: 0 20px; }
  .km-nav-inner         { padding: 16px 20px; }
  .km-features-grid     { grid-template-columns: 1fr; }
  .km-pain-grid         { grid-template-columns: 1fr; }
  .km-trust-list        { gap: 0; }
  .km-trust-sep         { display: none; }
  .km-trust-item        { padding: 6px 16px; }
  .km-footer-inner      { flex-direction: column; align-items: flex-start; gap: 12px; }
}

@media (max-width: 600px) {
  .km-features-grid { gap: 0; }
  .km-feat-card                { border-bottom: 1px solid var(--km-border); }
  .km-feat-card:last-child     { border-bottom: none; }
  .km-hero-actions  { flex-direction: column; align-items: flex-start; }
  .km-btn--lg       { width: 100%; justify-content: center; }
  .km-nav-link      { display: none; }
}