/* ========================================================
   VivaSense — Modern Site 2026
   ======================================================== */

/* ---------- CSS Variables ---------- */
:root {
  /* Core palette */
  --blue-50:  #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-900: #1e3a5f;

  --cyan-400: #22d3ee;
  --cyan-500: #06b6d4;

  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --green-500: #22c55e;

  /* Semantic */
  --bg-primary:   #ffffff;
  --bg-secondary: var(--gray-50);
  --bg-dark:      #0a1628;
  --bg-dark-2:    #0f1f3a;

  --text-primary:   var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-light:     rgba(255,255,255,0.85);

  --gradient-brand: linear-gradient(135deg, var(--blue-500), var(--cyan-400));
  --gradient-hero:  linear-gradient(160deg, #0a1628 0%, #0f2847 40%, #0c3d6e 70%, #0a4f7a 100%);

  --shadow-sm:   0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:   0 4px 14px rgba(0,0,0,0.08);
  --shadow-lg:   0 10px 40px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 60px rgba(59,130,246,0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition);
}

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

/* ---------- Utility ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-lg {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59,130,246,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.45);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.3);
}
.btn-outline:hover {
  border-color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.06);
}

.btn-nav {
  padding: 8px 24px;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.85rem;
}
.btn-nav:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(59,130,246,0.3);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
}

/* ---------- Animations ---------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.animate-on-scroll:nth-child(2) { transition-delay: 0.1s; }
.animate-on-scroll:nth-child(3) { transition-delay: 0.2s; }
.animate-on-scroll:nth-child(4) { transition-delay: 0.3s; }
.animate-on-scroll:nth-child(5) { transition-delay: 0.35s; }
.animate-on-scroll:nth-child(6) { transition-delay: 0.4s; }
.animate-on-scroll:nth-child(7) { transition-delay: 0.45s; }
.animate-on-scroll:nth-child(8) { transition-delay: 0.5s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
@keyframes pulse-glow {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}
@keyframes fade-in-up {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================================
   NAVBAR
   ======================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
}
.navbar.scrolled {
  background: rgba(10, 22, 40, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 4px 30px rgba(0,0,0,0.2);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-logo img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}
.navbar-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.navbar-menu a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
  position: relative;
}
.navbar-menu a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: width var(--transition);
}
.navbar-menu a:not(.btn):hover {
  color: #fff;
}
.navbar-menu a:not(.btn):hover::after {
  width: 100%;
}

/* Hamburger */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
  z-index: 1001;
}
.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all var(--transition);
}
.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}
.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 768px) {
  .navbar-toggle { display: flex; }
  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-dark);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transition: right var(--transition);
    box-shadow: -10px 0 40px rgba(0,0,0,0.3);
  }
  .navbar-menu.open {
    right: 0;
  }
  .navbar-menu a {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.85);
  }
}

/* ========================================================
   HERO
   ======================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: url('images/banner-water-drop-crop.jpg') center/cover no-repeat;
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(10,22,40,0.85) 0%, rgba(15,40,71,0.8) 40%, rgba(12,61,110,0.75) 70%, rgba(10,79,122,0.8) 100%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  padding: 120px 0 100px;
  max-width: 100%;
  width: 100%;
}
.hero-text {
  padding-left: max(24px, calc((100vw - 1200px) / 2));
  max-width: 600px;
}
.hero-visual {
  display: flex;
  justify-content: flex-end;
  padding-right: max(24px, calc((100vw - 1200px) / 2 - 60px));
}.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(59,130,246,0.15);
  border: 1px solid rgba(59,130,246,0.3);
  border-radius: 50px;
  color: var(--cyan-400);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 20px;
}
.hero-desc {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-phone {
  position: relative;
  width: 312px;
  animation: float 6s ease-in-out infinite;
}
.hero-phone img {
  width: 100%;
  height: auto;
  border-radius: 32px;
  filter: drop-shadow(0 20px 60px rgba(0,0,0,0.4));
}
.hero-phone-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 300px;
  height: 300px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
  border-radius: 50%;
  animation: pulse-glow 4s ease-in-out infinite;
  z-index: -1;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  z-index: 3;
}
.hero-wave svg {
  display: block;
  width: 100%;
  height: 80px;
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 140px 24px 80px;
    gap: 40px;
  }
  .hero-text {
    padding-left: 24px;
    padding-right: 24px;
    max-width: 100%;
  }
  .hero-visual {
    padding-right: 0;
    justify-content: center;
  }
  .hero-desc { margin: 0 auto 32px; }
  .hero-actions { justify-content: center; }
  .hero-phone { width: 240px; }
  .hero-visual { order: -1; }
}

/* ========================================================
   STATS BAR
   ======================================================== */
.stats-bar {
  padding: 40px 0 20px;
  background: var(--bg-primary);
  position: relative;
  z-index: 4;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-item {
  text-align: center;
  padding: 24px 16px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--gray-100);
  transition: all var(--transition);
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.stat-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--blue-500);
}
.stat-number {
  display: inline;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}
.stat-suffix {
  display: inline;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-500);
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}
.stats-footnote {
  font-size: 0.75rem;
  color: var(--gray-400);
  text-align: center;
  margin-top: 12px;
}

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-number { font-size: 2rem; }
}

/* ========================================================
   SECTION COMMON
   ======================================================== */
.section {
  padding: 100px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 60px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(59,130,246,0.08);
  color: var(--blue-600);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 50px;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--text-primary);
}

/* ========================================================
   SOBRE
   ======================================================== */
.section-sobre {
  background: var(--bg-primary);
}
.sobre-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.sobre-content p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.sobre-content p strong {
  color: var(--text-primary);
}
.sobre-cards {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.feature-card {
  padding: 28px;
  background: var(--bg-primary);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.feature-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(59,130,246,0.08);
  color: var(--blue-500);
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .sobre-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* ========================================================
   COMO FUNCIONA
   ======================================================== */
.section-como-funciona {
  background: var(--bg-secondary);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 80px;
}
.step-card {
  position: relative;
  padding: 40px 28px;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all var(--transition);
  overflow: hidden;
}
.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--transition);
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.step-card:hover::before {
  opacity: 1;
}
.step-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.2;
  line-height: 1;
  margin-bottom: 16px;
}
.step-icon {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--blue-500);
}
.step-card h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}
.step-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.como-funciona-visual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.installation-img-wrapper {
  background: linear-gradient(135deg, var(--blue-50), var(--gray-100));
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.installation-img-wrapper img {
  max-height: 500px;
  width: auto;
}
.como-funciona-info h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.como-funciona-info p {
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.como-funciona-info p strong {
  color: var(--text-primary);
}

/* Check list */
.check-list {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.check-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  color: var(--text-primary);
}
.check-list svg {
  color: var(--green-500);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
  .como-funciona-visual { grid-template-columns: 1fr; gap: 40px; }
}

/* ========================================================
   VANTAGENS
   ======================================================== */
.section-vantagens {
  background: var(--bg-primary);
}
.vantagens-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.vantagem-card {
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  border: 1px solid var(--gray-200);
  text-align: center;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.vantagem-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 0;
}
.vantagem-card:hover {
  transform: translateY(-6px);
  border-color: transparent;
  box-shadow: var(--shadow-lg);
}
.vantagem-card:hover::after {
  opacity: 0.03;
}
.vantagem-card > * { position: relative; z-index: 1; }
.vantagem-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(59,130,246,0.08);
  color: var(--blue-500);
  transition: all var(--transition);
}
.vantagem-card:hover .vantagem-icon {
  background: var(--gradient-brand);
  color: #fff;
}
.vantagem-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}
.vantagem-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

@media (max-width: 768px) {
  .vantagens-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .vantagens-grid { grid-template-columns: 1fr; }
}

/* ========================================================
   ATUAÇÃO
   ======================================================== */
.section-atuacao {
  background: var(--bg-secondary);
}
.atuacao-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}
.atuacao-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-md);
  text-align: center;
  transition: all var(--transition);
}
.atuacao-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-200);
}
.atuacao-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(59,130,246,0.06);
  color: var(--blue-500);
  transition: all var(--transition);
}
.atuacao-card:hover .atuacao-icon {
  background: var(--gradient-brand);
  color: #fff;
}
.atuacao-card span {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
}
@media (max-width: 768px) {
  .atuacao-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .atuacao-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
}

/* ========================================================
   CONTATO
   ======================================================== */
.section-contato {
  background: var(--bg-primary);
}
.contato-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.contato-info h2 {
  margin-bottom: 16px;
}
.contato-info .text-lg {
  margin-bottom: 32px;
}
.contato-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.contato-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-200);
  background: var(--bg-primary);
  transition: all var(--transition);
}
.contato-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.contato-whatsapp:hover {
  border-color: #25d366;
  background: rgba(37,211,102,0.04);
}
.contato-email:hover {
  border-color: var(--blue-400);
  background: rgba(59,130,246,0.04);
}
.contato-card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  flex-shrink: 0;
}
.contato-whatsapp .contato-card-icon {
  background: rgba(37,211,102,0.1);
  color: #25d366;
}
.contato-email .contato-card-icon {
  background: rgba(59,130,246,0.1);
  color: var(--blue-500);
}
.contato-card-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-400);
  font-weight: 600;
}
.contato-card-content strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-primary);
}
.contato-card-content small {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Trust card */
.trust-card {
  padding: 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--bg-dark), var(--bg-dark-2));
  color: var(--text-light);
}
.trust-icon {
  color: var(--cyan-400);
  margin-bottom: 20px;
}
.trust-card h3 {
  font-size: 1.3rem;
  color: #fff;
  margin-bottom: 16px;
}
.trust-card p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
}

@media (max-width: 768px) {
  .contato-wrapper { grid-template-columns: 1fr; gap: 32px; }
}

/* ========================================================
   FOOTER
   ======================================================== */
.footer {
  position: relative;
  background: var(--bg-dark);
  color: var(--text-light);
  padding-top: 80px;
}
.footer-wave {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
}
.footer-wave svg {
  display: block;
  width: 100%;
  height: 60px;
}
.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 40px;
}
.footer-logo {
  filter: brightness(0) invert(1);
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  max-width: 280px;
  line-height: 1.6;
}
.footer-links h4,
.footer-contact h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}
.footer-links a,
.footer-contact a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.65);
  padding: 4px 0;
  transition: color var(--transition);
}
.footer-links a:hover,
.footer-contact a:hover {
  color: #fff;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

@media (max-width: 768px) {
  .footer-content { grid-template-columns: 1fr; gap: 32px; }
}

/* ========================================================
   WHATSAPP FAB
   ======================================================== */
.whatsapp-fab {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #25d366;
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  z-index: 999;
  transition: all var(--transition);
  animation: fade-in-up 0.6s ease-out 1s backwards;
}
.whatsapp-fab:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37,211,102,0.5);
}

/* ========================================================
   PARTICLES (bubbles)
   ======================================================== */
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.15);
  pointer-events: none;
}
@keyframes rise {
  0% {
    transform: translateY(100vh) scale(0);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-20vh) scale(1);
    opacity: 0;
  }
}