/* ══════════════════════════════════════════════════
   DJN Engenharia e Telecom – Portfolio CSS Premium
   ══════════════════════════════════════════════════ */

/* ── Variables ── */
:root {
  --blue-dark:   #0a1628;
  --blue-mid:    #1a3a6c;
  --blue-main:   #1e4d8c;
  --blue-light:  #3a7bd5;
  --blue-bright: #5b9cf6;
  --accent:      #f59e0b;
  --accent-2:    #ef4444;
  --white:       #ffffff;
  --gray-100:    #f1f5f9;
  --gray-300:    #cbd5e1;
  --gray-500:    #64748b;
  --gray-700:    #334155;
  --font-head:   'Montserrat', sans-serif;
  --font-body:   'Inter', sans-serif;
  --radius:      12px;
  --radius-lg:   20px;
  --shadow:      0 8px 32px rgba(0,0,0,0.18);
  --shadow-lg:   0 20px 60px rgba(0,0,0,0.25);
  --transition:  0.35s cubic-bezier(.4,0,.2,1);
  --slide-count: 7;
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--blue-dark);
  color: var(--white);
  overflow-x: hidden;
  overflow-y: auto;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ══════════════════════════════════════════════════
   NAV
══════════════════════════════════════════════════ */
.slide-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(10,22,40,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(58,123,213,0.2);
}
.nav-logo {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--white);
  letter-spacing: 2px;
}
.nav-logo span { color: var(--accent); }
.nav-dots {
  display: flex;
  gap: 10px;
  align-items: center;
}
.nav-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}
.nav-dot.active {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.3);
}
.nav-dot:hover { background: var(--blue-bright); }
.nav-menu-btn {
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--white);
  width: 38px; height: 38px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.nav-menu-btn:hover { background: rgba(58,123,213,0.3); }

/* ══════════════════════════════════════════════════
   SIDE MENU
══════════════════════════════════════════════════ */
.side-menu {
  position: fixed;
  top: 0; right: -300px;
  width: 280px; height: 100vh;
  background: rgba(10,22,40,0.98);
  backdrop-filter: blur(20px);
  border-left: 1px solid rgba(58,123,213,0.25);
  z-index: 2000;
  padding: 4rem 2rem 2rem;
  transition: right var(--transition);
}
.side-menu.open { right: 0; }
.side-menu-close {
  position: absolute; top: 1rem; right: 1rem;
  background: none; border: none; color: var(--white);
  font-size: 1.2rem; cursor: pointer;
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
}
.side-menu-close:hover { background: rgba(255,255,255,0.1); }
.side-menu ul { display: flex; flex-direction: column; gap: 0.4rem; }
.side-menu ul li a {
  display: flex; align-items: center; gap: 0.9rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: var(--transition);
}
.side-menu ul li a:hover,
.side-menu ul li a.active {
  background: rgba(58,123,213,0.2);
  color: var(--white);
  padding-left: 1.4rem;
}
.side-menu ul li a i { width: 18px; color: var(--blue-bright); }
.side-menu-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1500;
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition);
}
.side-menu-overlay.visible { opacity: 1; pointer-events: auto; }

/* ══════════════════════════════════════════════════
   PROGRESS BAR
══════════════════════════════════════════════════ */
.progress-bar {
  position: fixed;
  top: 60px; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue-bright), var(--accent));
  width: 0%;
  z-index: 999;
  transition: width 0.4s ease;
}

/* ══════════════════════════════════════════════════
   SLIDES – Base
══════════════════════════════════════════════════ */
.slide {
  min-height: 100vh;
  width: 100%;
  padding: 80px 0 40px;
  position: relative;
  overflow: hidden;
}

.slide-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2.5rem;
}

/* Section label */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--blue-bright);
  background: rgba(58,123,213,0.12);
  border: 1px solid rgba(58,123,213,0.3);
  padding: 0.3rem 1rem;
  border-radius: 50px;
  margin-bottom: 1rem;
}

/* Section title */
.section-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 0.6rem;
}
.section-title span { color: var(--accent); }

/* Section sub */
.section-sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.6);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

/* ══════════════════════════════════════════════════
   NAV ARROWS
══════════════════════════════════════════════════ */
.nav-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  width: 44px; height: 44px;
  border-radius: 50%;
  font-size: 1rem;
  cursor: pointer;
  z-index: 900;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}
.nav-arrow:hover { background: rgba(58,123,213,0.35); border-color: var(--blue-bright); }
.nav-prev { left: 1rem; }
.nav-next { right: 1rem; }

/* scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2rem; left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,0.5);
  font-size: 1.4rem;
  cursor: pointer;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(10px); }
}

/* ══════════════════════════════════════════════════
   SLIDE 0 – COVER
══════════════════════════════════════════════════ */
.slide-cover {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  min-height: 100vh;
  padding: 0;
  position: relative;
}
.cover-bg {
  position: absolute; inset: 0;
  overflow: hidden;
}
.cover-img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: brightness(0.35) saturate(0.7);
}
.cover-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    120deg,
    rgba(10,22,40,0.97) 0%,
    rgba(10,22,40,0.75) 50%,
    rgba(10,22,40,0.2) 100%
  );
}

.cover-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 0 clamp(2rem, 5vw, 6rem);
}

.cover-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245,158,11,0.15);
  border: 1px solid rgba(245,158,11,0.4);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  margin-bottom: 1.5rem;
}

.cover-title {
  font-family: var(--font-head);
  font-size: clamp(2.6rem, 6vw, 4.8rem);
  font-weight: 900;
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 20px rgba(0,0,0,0.4);
}
.cover-title span { color: var(--accent); }

.cover-subtitle {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  margin-bottom: 1.8rem;
}

.cover-highlight {
  background: rgba(58,123,213,0.12);
  border-left: 3px solid var(--blue-bright);
  padding: 0.9rem 1.2rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 2rem;
  line-height: 1.55;
}
.cover-highlight strong { color: var(--white); }

.cover-info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  font-weight: 500;
  margin-bottom: 2.5rem;
}
.cover-info-bar span { display: flex; align-items: center; gap: 0.4rem; }
.cover-info-bar i { color: var(--blue-bright); }
.cover-info-bar .divider { opacity: 0.3; }

/* Button primary */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: linear-gradient(135deg, var(--blue-light), var(--blue-bright));
  color: var(--white);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.85rem 2rem;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(58,123,213,0.4);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(58,123,213,0.55);
}

/* Animate in */
.animate-in { animation: fadeUp 0.9s cubic-bezier(.4,0,.2,1) forwards; }
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(40px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════════
   SLIDE 1 – ABOUT
══════════════════════════════════════════════════ */
.slide-about {
  background: linear-gradient(160deg, #0d1e3a 0%, #0a1628 100%);
}
.slide-about::before {
  content: '';
  position: absolute;
  top: -150px; right: -150px;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(58,123,213,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-lead {
  font-size: 1.15rem;
  line-height: 1.65;
  color: rgba(255,255,255,0.9);
  margin-bottom: 1rem;
}
.about-text p {
  font-size: 0.98rem;
  line-height: 1.75;
  color: rgba(255,255,255,0.7);
  margin-bottom: 1.5rem;
}
.differential-box {
  display: flex;
  gap: 1rem;
  background: rgba(245,158,11,0.07);
  border: 1px solid rgba(245,158,11,0.2);
  border-radius: var(--radius);
  padding: 1.2rem;
}
.diff-icon {
  flex-shrink: 0;
  width: 44px; height: 44px;
  background: rgba(245,158,11,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
}
.differential-box strong { display: block; color: var(--accent); margin-bottom: 0.4rem; }
.differential-box p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin: 0;
  line-height: 1.6;
}
.differential-box strong { color: var(--white); }

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.about-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 1.3rem;
  text-align: center;
  transition: var(--transition);
}
.about-card:hover {
  background: rgba(58,123,213,0.1);
  border-color: rgba(58,123,213,0.3);
  transform: translateY(-4px);
}
.about-card i { font-size: 1.6rem; color: var(--blue-bright); margin-bottom: 0.7rem; }
.about-card h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gray-300); margin-bottom: 0.3rem; }
.about-card p { font-size: 0.95rem; font-weight: 600; color: var(--white); line-height: 1.4; }
.about-card small { font-size: 0.78rem; color: var(--blue-bright); font-weight: 400; }

/* ══════════════════════════════════════════════════
   SLIDE 2 – MECÂNICA
══════════════════════════════════════════════════ */
.slide-mec {
  background: linear-gradient(160deg, #0a1628 0%, #0d1e3a 100%);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: rgba(58,123,213,0.4);
  box-shadow: 0 16px 50px rgba(0,0,0,0.3);
}
.service-img-wrap {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.service-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.service-card:hover .service-img-wrap img { transform: scale(1.06); }
.service-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: var(--accent);
  color: #000;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.7rem;
  border-radius: 50px;
}
.service-body { padding: 1.3rem; }
.service-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
  display: flex; align-items: center; gap: 0.5rem;
}
.service-body h3 i { color: var(--blue-bright); }
.service-body p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: 0.9rem;
}
.service-body ul li {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.84rem;
  color: rgba(255,255,255,0.7);
  padding: 0.2rem 0;
}
.service-body ul li i { color: #22c55e; font-size: 0.75rem; }

/* ══════════════════════════════════════════════════
   SLIDE 3 – SAFETY NR-12
══════════════════════════════════════════════════ */
.slide-safety {
  background: linear-gradient(160deg, #0d1e3a 0%, #0a1628 100%);
}
.safety-layout {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2.5rem;
  align-items: start;
}
.safety-main-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 2px solid rgba(58,123,213,0.2);
}
.safety-badge-row {
  display: flex; gap: 0.8rem; margin-top: 1rem;
}
.safety-badge {
  display: flex; align-items: center; gap: 0.5rem;
  background: rgba(58,123,213,0.15);
  border: 1px solid rgba(58,123,213,0.3);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.5rem 1.2rem;
  border-radius: 50px;
}
.safety-badge.accent { background: rgba(245,158,11,0.15); border-color: rgba(245,158,11,0.3); color: var(--accent); }
.nr-block {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.2rem;
}
.nr-block.art-block { border-color: rgba(245,158,11,0.15); }
.nr-header {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 0.8rem;
}
.nr-number {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--blue-bright);
  background: rgba(58,123,213,0.12);
  padding: 0.2rem 0.7rem;
  border-radius: 8px;
}
.nr-number.art { color: var(--accent); background: rgba(245,158,11,0.12); }
.nr-header h3 { font-size: 1.1rem; font-weight: 700; color: var(--white); }
.nr-block > p { font-size: 0.9rem; color: rgba(255,255,255,0.65); line-height: 1.65; margin-bottom: 1rem; }
.nr-services-list { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.nr-item {
  display: flex; align-items: center; gap: 0.4rem;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.75);
  background: rgba(255,255,255,0.05);
  padding: 0.3rem 0.8rem;
  border-radius: 50px;
}
.nr-item i { color: #22c55e; font-size: 0.7rem; }

/* ══════════════════════════════════════════════════
   SLIDE 4 – LAUDOS
══════════════════════════════════════════════════ */
.slide-laudos {
  background: linear-gradient(160deg, #0a1628 0%, #0d1e3a 100%);
}
.laudos-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1.2fr;
  gap: 1.5rem;
  align-items: stretch;
}
.laudo-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex; flex-direction: column;
}
.laudo-card:hover {
  transform: translateY(-5px);
  border-color: rgba(58,123,213,0.35);
  box-shadow: 0 14px 40px rgba(0,0,0,0.25);
}
.laudo-img-wrap {
  height: 170px; overflow: hidden;
}
.laudo-img-wrap img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.laudo-card:hover .laudo-img-wrap img { transform: scale(1.06); }
.laudo-body {
  padding: 1.3rem;
  flex: 1;
}
.laudo-body.center { display: flex; flex-direction: column; align-items: center; text-align: center; justify-content: center; height: 100%; }
.laudo-icon {
  width: 42px; height: 42px;
  background: rgba(58,123,213,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue-bright);
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
}
.laudo-icon.large { width: 64px; height: 64px; font-size: 1.8rem; margin-bottom: 1rem; background: rgba(245,158,11,0.12); color: var(--accent); }
.laudo-body h3 { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.laudo-body p { font-size: 0.87rem; color: rgba(255,255,255,0.62); line-height: 1.6; margin-bottom: 0.9rem; }
.laudo-body strong { color: var(--white); }
.laudo-norm { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.laudo-norm span {
  font-size: 0.72rem;
  font-weight: 700;
  background: rgba(58,123,213,0.12);
  border: 1px solid rgba(58,123,213,0.25);
  color: var(--blue-bright);
  padding: 0.2rem 0.7rem;
  border-radius: 50px;
}
.laudo-highlight {
  border-color: rgba(245,158,11,0.2);
  background: rgba(245,158,11,0.04);
}
.laudo-steps {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.2rem;
}
.step {
  display: flex; flex-direction: column; align-items: center; gap: 0.3rem;
  background: rgba(58,123,213,0.1);
  border-radius: var(--radius);
  padding: 0.7rem 0.9rem;
  min-width: 58px;
}
.step i { font-size: 1rem; color: var(--blue-bright); }
.step span { font-size: 0.7rem; color: rgba(255,255,255,0.7); font-weight: 600; }
.step-arrow { color: rgba(255,255,255,0.25); font-size: 0.75rem; }

/* ══════════════════════════════════════════════════
   SLIDE 5 – TELECOM
══════════════════════════════════════════════════ */
.slide-telecom {
  background: linear-gradient(160deg, #0d1e3a 0%, #081326 100%);
}
.telecom-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.telecom-cards-col { display: flex; flex-direction: column; gap: 1.2rem; }
.telecom-card {
  display: flex; gap: 1.2rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 1.3rem;
  align-items: flex-start;
  transition: var(--transition);
}
.telecom-card:hover {
  background: rgba(58,123,213,0.08);
  border-color: rgba(58,123,213,0.3);
  transform: translateX(4px);
}
.tc-icon {
  flex-shrink: 0;
  width: 50px; height: 50px;
  background: rgba(58,123,213,0.15);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  color: var(--blue-bright);
}
.tc-body h3 { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 0.4rem; }
.tc-body p { font-size: 0.87rem; color: rgba(255,255,255,0.6); line-height: 1.6; margin-bottom: 0.7rem; }
.tc-body strong { color: var(--white); }
.tc-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tc-tags span {
  font-size: 0.7rem; font-weight: 700;
  background: rgba(58,123,213,0.12);
  border: 1px solid rgba(58,123,213,0.2);
  color: var(--blue-bright);
  padding: 0.18rem 0.6rem;
  border-radius: 50px;
}
.telecom-img-stack {
  display: flex; flex-direction: column; gap: 1rem;
  position: relative;
}
.tc-img-top, .tc-img-bottom {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 2px solid rgba(58,123,213,0.2);
  transition: var(--transition);
}
.tc-img-top { height: 220px; }
.tc-img-bottom { height: 170px; }
.tc-img-top:hover, .tc-img-bottom:hover {
  border-color: rgba(58,123,213,0.5);
  transform: scale(1.02);
}

/* ══════════════════════════════════════════════════
   SLIDE 6 – CONTACT
══════════════════════════════════════════════════ */
.slide-contact {
  background: linear-gradient(160deg, #0a1628 0%, #0d1e3a 100%);
}
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 2.5rem;
  align-items: start;
}

/* Map */
.region-map {
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(58,123,213,0.2);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}
.map-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.45);
  margin-bottom: 1rem;
}
.map-svg { width: 100%; max-width: 280px; margin: 0 auto; }
.coverage-badges {
  display: flex; flex-direction: column; gap: 0.6rem;
  margin-top: 1.2rem;
}
.cov-badge {
  display: flex; align-items: center; gap: 0.6rem;
  background: rgba(58,123,213,0.1);
  border: 1px solid rgba(58,123,213,0.2);
  border-radius: var(--radius);
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
}
.cov-badge i { color: #22c55e; }

/* CTA */
.cta-box {
  background: linear-gradient(135deg, rgba(58,123,213,0.15), rgba(245,158,11,0.08));
  border: 1px solid rgba(58,123,213,0.25);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.cta-headline {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 0.4rem;
}
.cta-headline i { color: var(--blue-bright); margin-right: 0.3rem; font-size: 1rem; }
.cta-headline strong { color: var(--accent); }
.cta-sub { font-size: 0.9rem; color: rgba(255,255,255,0.55); }

/* Contact cards */
.contact-cards { display: flex; flex-direction: column; gap: 0.8rem; margin-bottom: 1.5rem; }
.contact-card {
  display: flex; align-items: center; gap: 1rem;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  transition: var(--transition);
}
.contact-card:not(.no-link):hover {
  background: rgba(58,123,213,0.1);
  border-color: rgba(58,123,213,0.3);
  transform: translateX(4px);
}
.cc-icon {
  width: 42px; height: 42px;
  background: rgba(58,123,213,0.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  color: var(--blue-bright);
  flex-shrink: 0;
}
.cc-icon.phone { background: rgba(34,197,94,0.12); color: #22c55e; }
.cc-icon.loc { background: rgba(245,158,11,0.12); color: var(--accent); }
.cc-icon.eng { background: rgba(139,92,246,0.12); color: #a78bfa; }
.cc-label { display: block; font-size: 0.72rem; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 0.1rem; }
.contact-card strong { display: block; font-size: 0.95rem; color: var(--white); }
.contact-card small { font-size: 0.78rem; color: var(--blue-bright); }

.btn-contact { width: 100%; justify-content: center; }

/* Footer */
.slide-footer {
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(255,255,255,0.07);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.78rem;
  color: rgba(255,255,255,0.35);
  align-items: center;
}
.slide-footer .divider { opacity: 0.4; }

/* ══════════════════════════════════════════════════
   WHATSAPP FLOAT BUTTON
══════════════════════════════════════════════════ */
.whatsapp-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 800;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: #25d366;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: 50px;
  box-shadow: 0 6px 24px rgba(37,211,102,0.45);
  text-decoration: none;
  transition: var(--transition);
  max-width: 220px;
  overflow: hidden;
  white-space: nowrap;
}
.whatsapp-btn i {
  font-size: 1.4rem;
  flex-shrink: 0;
}
.whatsapp-btn span {
  max-width: 0;
  overflow: hidden;
  transition: max-width 0.4s ease, opacity 0.4s ease;
  opacity: 0;
}
.whatsapp-btn:hover {
  background: #20b858;
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(37,211,102,0.55);
}
.whatsapp-btn:hover span {
  max-width: 200px;
  opacity: 1;
}

@media (max-width: 480px) {
  .whatsapp-btn { right: 1rem; bottom: 1.5rem; padding: 0.75rem; border-radius: 50%; }
  .whatsapp-btn span { display: none; }
}

/* ══════════════════════════════════════════════════
   SCROLL ANIMATION CLASS
══════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
  .laudos-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .telecom-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .safety-layout { grid-template-columns: 1fr; }
  .telecom-img-stack { flex-direction: row; }
  .tc-img-top { height: 180px; }
  .tc-img-bottom { height: 180px; }
}

@media (max-width: 768px) {
  .slide-inner { padding: 1.5rem 1.2rem; }
  .services-grid { grid-template-columns: 1fr; }
  .laudos-grid { grid-template-columns: 1fr; }
  .about-cards { grid-template-columns: 1fr 1fr; }
  .cover-content { padding: 0 1.5rem; }
  .cover-title { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
  .telecom-img-stack { flex-direction: column; }
  .nav-arrow { display: none; }
  .laudo-steps { gap: 0.3rem; }
  .step { padding: 0.5rem 0.6rem; min-width: 48px; }
}

@media (max-width: 480px) {
  .about-cards { grid-template-columns: 1fr; }
  .cover-info-bar .divider { display: none; }
  .cover-info-bar { flex-direction: column; gap: 0.3rem; }
  .safety-badge-row { flex-direction: column; }
  .laudo-steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); }
}