@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --clr-bg: #FAFAFA;
  --clr-surface: #FFFFFF;
  --clr-primary: #111111;
  --clr-secondary: #333333;
  --clr-text: #222222;
  --clr-text-muted: #555555;
  --clr-accent: #2563EB; /* Deep Blue for CTA */
  --clr-accent-hover: #1D4ED8;
  --clr-border: #E5E7EB;
  --clr-whatsapp: #25D366;
  --clr-whatsapp-hover: #1EBE55;
  
  /* Typography */
  --font-family: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Layout */
  --max-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  color: var(--clr-primary);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--space-sm);
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--space-sm);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  margin-bottom: var(--space-xs);
}

p {
  color: var(--clr-text-muted);
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  max-width: 70ch;
}

a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--clr-accent-hover);
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.section {
  padding: var(--space-xl) 0;
}

.section-light {
  background-color: var(--clr-surface);
}

.section-dark {
  background-color: var(--clr-primary);
  color: var(--clr-surface);
}

.section-dark h1, .section-dark h2, .section-dark h3, .section-dark p {
  color: var(--clr-surface);
}

.section-dark p {
  opacity: 0.8;
}

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.text-center {
  text-align: center;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1.125rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
}

.btn-primary {
  background-color: var(--clr-accent);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--clr-accent-hover);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--clr-primary);
  border: 2px solid var(--clr-primary);
}

.btn-secondary:hover {
  background-color: var(--clr-primary);
  color: var(--clr-surface);
}

.btn-whatsapp {
  background-color: var(--clr-whatsapp);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-whatsapp:hover {
  background-color: var(--clr-whatsapp-hover);
  color: #fff;
}

.btn-whatsapp svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Sticky CTA Mobile */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--clr-surface);
  padding: var(--space-sm);
  box-shadow: 0 -4px 6px -1px rgba(0, 0, 0, 0.1);
  z-index: 1000;
}

@media (max-width: 768px) {
  .sticky-cta {
    display: flex;
    gap: var(--space-sm);
  }
  .sticky-cta .btn {
    flex: 1;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }
  body {
    padding-bottom: 80px; /* Space for sticky CTA */
  }
  .section {
    padding: var(--space-lg) 0;
  }
}

/* Header */
.header {
  background-color: var(--clr-surface);
  padding: var(--space-sm) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--clr-primary);
  letter-spacing: -1px;
}

.nav-links {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.nav-links a {
  color: var(--clr-text);
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--clr-accent);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

/* Hero Section */
.hero {
  padding: var(--space-xl) 0 var(--space-md) 0;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-content h1 {
  margin-bottom: var(--space-sm);
}

.hero-buttons {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.hero-visual {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
}

@media (max-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content p {
    margin: 0 auto var(--space-sm) auto;
  }
  .hero-buttons {
    justify-content: center;
  }
}

/* Trust Strip */
.trust-strip {
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--space-sm) 0;
  background: var(--clr-surface);
}

.trust-strip .container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--clr-text-muted);
}

/* Cards (Problem / Services) */
.card {
  background: var(--clr-surface);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--clr-border);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  color: var(--clr-primary);
}

/* Paid Ads Section (Split) */
.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 768px) {
  .split-section {
    grid-template-columns: 1fr;
  }
}

.split-card {
  background: var(--clr-bg);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
}

.split-card h3 {
  color: var(--clr-accent);
}

.split-card ul {
  list-style: none;
  margin-top: var(--space-sm);
}

.split-card ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--clr-border);
  position: relative;
  padding-left: 1.5rem;
}

.split-card ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--clr-accent);
}

/* Process Steps */
.process-step {
  text-align: center;
  padding: var(--space-md);
}

.process-number {
  width: 60px;
  height: 60px;
  background: var(--clr-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto var(--space-sm) auto;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--clr-border);
  margin-bottom: var(--space-sm);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-sm) 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--clr-primary);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding-bottom: var(--space-sm);
  margin: 0;
}

/* Forms */
.form-group {
  margin-bottom: var(--space-sm);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--clr-primary);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23111111%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem top 50%;
  background-size: 0.65rem auto;
}

.form-success, .form-error {
  display: none;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
  font-weight: 600;
}

.form-success {
  background-color: #d1fae5;
  color: #065f46;
}

.form-error {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Footer */
.footer {
  background: var(--clr-primary);
  color: var(--clr-surface);
  padding: var(--space-lg) 0 var(--space-md) 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.footer h4 {
  color: var(--clr-surface);
  margin-bottom: var(--space-sm);
}

.footer p, .footer a {
  color: #9ca3af;
  text-decoration: none;
}

.footer a:hover {
  color: #fff;
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-sm);
  color: #9ca3af;
  font-size: 0.875rem;
}