/* ============================================
   KFlow Landing Page Styles
   Modern, Professional, Conversion-Focused
   ============================================ */

/* CSS Variables */
:root {
  /* Colors - Baseadas na logo K-Flow (roxo para magenta) */
  --color-primary: #7c3aed;
  --color-primary-dark: #6d28d9;
  --color-primary-light: #a78bfa;
  --color-secondary: #c026d3;
  --color-secondary-dark: #a21caf;

  /* Neutrals */
  --color-white: #ffffff;
  --color-gray-50: #faf5ff;
  --color-gray-100: #f3e8ff;
  --color-gray-200: #e9d5ff;
  --color-gray-300: #d8b4fe;
  --color-gray-400: #a78bfa;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-secondary) 100%
  );
  --gradient-dark: linear-gradient(135deg, #4c1d95 0%, #1e1b4b 100%);

  /* Typography */
  --font-family:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* Spacing */
  --section-padding: 6rem;
  --container-max: 1200px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg:
    0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl:
    0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.3);

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  -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-fast);
}

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-gray-900);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
}
h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}
h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-decoration: none;
}

.btn i {
  font-size: 1.25rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow:
    var(--shadow-md),
    0 0 0 0 rgba(124, 58, 237, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    var(--shadow-lg),
    0 0 20px rgba(124, 58, 237, 0.4);
}

.btn-ghost {
  background: transparent;
  color: var(--color-gray-700);
  border: 1px solid var(--color-gray-200);
}

.btn-ghost:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-300);
}

.btn-white {
  background: var(--color-white);
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-lg);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.0625rem;
}

.btn-block {
  width: 100%;
}

/* Section Styles */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.1) 0%,
    rgba(192, 38, 211, 0.1) 100%
  );
  color: var(--color-primary-dark);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-gray-500);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-normal);
}

.header.scrolled {
  padding: 0.75rem 0;
  border-bottom-color: var(--color-gray-100);
  box-shadow: var(--shadow-sm);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-gray-900);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  font-size: 1.25rem;
}

.logo-image {
  height: 2.5rem;
  width: auto;
  object-fit: contain;
}

.nav-list {
  display: flex;
  gap: 2rem;
}

.nav-link {
  font-weight: 500;
  color: var(--color-gray-600);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  gap: 0.75rem;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-gray-700);
  cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  padding-top: 5rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-menu.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav {
  padding: 2rem;
}

.mobile-nav-list {
  margin-bottom: 2rem;
}

.mobile-nav-link {
  display: block;
  padding: 1rem 0;
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-gray-700);
  border-bottom: 1px solid var(--color-gray-100);
}

.mobile-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding: 8rem 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at 30% 20%,
      rgba(124, 58, 237, 0.08) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 80%,
      rgba(192, 38, 211, 0.08) 0%,
      transparent 50%
    );
}

.hero-pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at 1px 1px,
    var(--color-gray-200) 1px,
    transparent 0
  );
  background-size: 40px 40px;
  opacity: 0.5;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.1) 0%,
    rgba(192, 38, 211, 0.1) 100%
  );
  border: 1px solid rgba(124, 58, 237, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-dark);
  margin-bottom: 1.5rem;
}

.hero-badge i {
  color: var(--color-primary);
}

.hero-title {
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-gray-500);
  margin-bottom: 2rem;
  max-width: 540px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-gray-900);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

.stat-divider {
  width: 1px;
  height: 2.5rem;
  background: var(--color-gray-200);
}

/* Hero Visual / Mockup */
.hero-visual {
  position: relative;
}

.hero-mockup {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  box-shadow:
    var(--shadow-xl),
    0 0 60px rgba(0, 0, 0, 0.1);
  overflow: hidden;
  border: 1px solid var(--color-gray-100);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-100);
}

.mockup-dots {
  display: flex;
  gap: 0.375rem;
}

.mockup-dots span {
  width: 0.625rem;
  height: 0.625rem;
  border-radius: 50%;
  background: var(--color-gray-300);
}

.mockup-dots span:first-child {
  background: #ef4444;
}
.mockup-dots span:nth-child(2) {
  background: #f59e0b;
}
.mockup-dots span:last-child {
  background: #22c55e;
}

.mockup-title {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.mockup-content {
  display: flex;
  height: 300px;
}

.mockup-sidebar {
  width: 60px;
  background: var(--color-gray-900);
  padding: 1rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mockup-menu-item {
  height: 2.5rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
}

.mockup-menu-item.active {
  background: var(--color-primary);
}

.mockup-main {
  flex: 1;
  display: flex;
}

.mockup-chat-list {
  width: 200px;
  border-right: 1px solid var(--color-gray-100);
  padding: 1rem;
}

.mockup-chat-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
}

.mockup-chat-item.unread {
  background: var(--color-gray-50);
}

.mockup-avatar {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--gradient-primary);
}

.mockup-chat-info {
  flex: 1;
}

.mockup-chat-name {
  height: 0.5rem;
  width: 60%;
  background: var(--color-gray-300);
  border-radius: var(--radius-sm);
  margin-bottom: 0.375rem;
}

.mockup-chat-preview {
  height: 0.375rem;
  width: 80%;
  background: var(--color-gray-200);
  border-radius: var(--radius-sm);
}

.mockup-badge {
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 0.625rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mockup-conversation {
  flex: 1;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mockup-message {
  display: flex;
}

.mockup-message.sent {
  justify-content: flex-end;
}

.mockup-bubble {
  height: 2rem;
  width: 60%;
  border-radius: var(--radius-lg);
  background: var(--color-gray-100);
}

.mockup-message.sent .mockup-bubble {
  background: var(--color-primary);
}

.mockup-bubble.short {
  width: 30%;
}

/* Floating Cards */
.hero-float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-white);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-100);
  animation: float 6s ease-in-out infinite;
}

.hero-float-card.card-1 {
  top: 20%;
  right: -20px;
  animation-delay: -2s;
}

.hero-float-card.card-2 {
  bottom: 20%;
  left: -20px;
  animation-delay: 0s;
}

.float-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.float-icon.green {
  background: rgba(124, 58, 237, 0.1);
  color: var(--color-primary);
}

.float-icon.blue {
  background: rgba(192, 38, 211, 0.1);
  color: var(--color-secondary);
}

.float-title {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray-900);
}

.float-desc {
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ============================================
   PROBLEM SECTION
   ============================================ */
.problem {
  padding: var(--section-padding) 0;
  background: var(--color-gray-50);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.problem-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
}

.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(239, 68, 68, 0.2);
}

.problem-icon {
  width: 3rem;
  height: 3rem;
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--color-gray-500);
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
  padding: var(--section-padding) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(124, 58, 237, 0.3);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.1) 0%,
    rgba(192, 38, 211, 0.1) 100%
  );
  color: var(--color-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-gray-500);
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works {
  padding: var(--section-padding) 0;
  background: var(--color-gray-50);
}

.steps {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
}

.step {
  flex: 1;
  max-width: 280px;
  text-align: center;
  position: relative;
}

.step-number {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 2rem;
  height: 2rem;
  background: var(--gradient-primary);
  color: var(--color-white);
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.step-content {
  background: var(--color-white);
  padding: 3rem 2rem 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
}

.step-icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(
    135deg,
    rgba(124, 58, 237, 0.1) 0%,
    rgba(192, 38, 211, 0.1) 100%
  );
  color: var(--color-primary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 1.5rem;
}

.step-content h3 {
  margin-bottom: 0.5rem;
}

.step-content p {
  font-size: 0.9375rem;
  color: var(--color-gray-500);
}

.step-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-gray-300);
  padding-top: 4rem;
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
  padding: var(--section-padding) 0;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.benefit-card {
  background: var(--color-white);
  padding: 2.5rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-gray-100);
  text-align: center;
  transition: all var(--transition-normal);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.benefit-metric {
  margin-bottom: 1.5rem;
}

.metric-value {
  display: block;
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.metric-label {
  font-size: 0.875rem;
  color: var(--color-gray-500);
  font-weight: 500;
}

.benefit-card h3 {
  margin-bottom: 0.5rem;
}

.benefit-card p {
  color: var(--color-gray-500);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  position: relative;
  padding: var(--section-padding) 0;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.cta-gradient {
  position: absolute;
  inset: 0;
  background: var(--gradient-dark);
}

.cta-content {
  text-align: center;
  color: var(--color-white);
}

.cta-content h2 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.cta-content p {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.cta-actions {
  margin-bottom: 1.5rem;
}

.cta-note {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-gray-900);
  color: var(--color-gray-400);
  padding: 4rem 0 2rem;
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand .logo-text {
  color: var(--color-white);
}

.footer-brand p {
  max-width: 280px;
}

.footer-addresses {
  margin-top: 2rem;
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
}

.address-item strong {
  display: block;
  color: var(--color-white);
  margin-bottom: 0.25rem;
  font-size: 0.9375rem;
}

.address-item p {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-gray-400);
  margin: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-column h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
}

.footer-bottom p {
  font-size: 0.875rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-cta {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    max-width: 600px;
    margin: 3rem auto 0;
  }

  .hero-float-card.card-1 {
    right: 10px;
  }

  .hero-float-card.card-2 {
    left: 10px;
  }

  .problem-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    flex-direction: column;
    align-items: center;
  }

  .step {
    max-width: 100%;
  }

  .step-connector {
    transform: rotate(90deg);
    padding: 1rem 0;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
  }

  .footer-main {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem;
  }

  .nav,
  .header-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: block;
  }

  .mobile-menu {
    display: block;
  }

  .hero {
    padding: 6rem 0 3rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .problem-grid,
  .features-grid {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-cta {
    flex-direction: column;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .mockup-content {
    height: 200px;
  }

  .mockup-chat-list {
    width: 120px;
  }

  .hero-float-card {
    display: none;
  }

  .footer-links {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   WHATSAPP FLOATING BUTTON
   ============================================ */
.whatsapp-fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.75rem;
  height: 3.75rem;
  background: #25d366;
  color: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.whatsapp-fab:hover {
  transform: scale(1.1) translateY(-5px);
  box-shadow: 0 12px 30px rgba(37, 211, 102, 0.6);
  color: var(--color-white);
}

.whatsapp-fab i {
  font-size: 2.25rem;
}

/* Pulse Animation */
.whatsapp-fab::before {
  content: "";
  position: absolute;
  inset: 0;
  background-color: #25d366;
  border-radius: var(--radius-full);
  z-index: -1;
  animation: whatsapp-pulse 2s infinite;
}

@keyframes whatsapp-pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

/* Tooltip on hover (desktop) */
.whatsapp-fab::after {
  content: "Fale conosco";
  position: absolute;
  right: 120%;
  background: var(--color-gray-900);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  pointer-events: none;
}

.whatsapp-fab:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-10px);
}

@media (max-width: 768px) {
  .whatsapp-fab {
    bottom: 1.5rem;
    right: 1.5rem;
    width: 3.5rem;
    height: 3.5rem;
  }
  
  .whatsapp-fab i {
    font-size: 2rem;
  }
  
  .whatsapp-fab::after {
    display: none;
  }
}