/* ===== CSS RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette */
  --color-primary: #1a4e8a;
  --color-secondary: #28a745;
  --color-accent: #ffc107;
  --color-neutral: #f5f5f5;
  --color-white: #ffffff;
  --color-black: #09090b;
  --color-gray: #71717a;
  --color-border: #e4e4e7;

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

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* 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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

/* ===== CONTAINER & LAYOUT ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===== WHATSAPP FLOATING BUTTON ===== */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  z-index: 1000;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  color: var(--color-white);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 25px 35px -5px rgba(37, 211, 102, 0.3);
}

/* ===== HEADER & NAVIGATION ===== */
.site-header {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 999;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) 0;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}

.logo span {
  color: var(--color-secondary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  font-weight: 600;
  color: var(--color-gray);
  transition: color var(--transition-base);
  position: relative;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #133d6e;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-black);
}

.btn-accent:hover {
  background: #e6ad06;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.875rem;
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

.hero-description {
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-2xl);
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ===== PAGE HERO ===== */
.page-hero {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.page-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
}

.page-subtitle {
  font-size: 1.5rem;
  opacity: 0.95;
  max-width: 48rem;
  margin: 0 auto;
}

/* ===== COURSES PROMO SECTION ===== */
.courses-promo {
  padding: var(--spacing-4xl) 0;
  background: var(--color-white);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2xl);
  max-width: 72rem;
  margin: 0 auto;
}

.course-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.course-image {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  transition: box-shadow var(--transition-base);
}

.course-image:hover {
  box-shadow: var(--shadow-xl), 0 0 0 1px rgba(26, 78, 138, 0.1);
}

.course-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== STATS SECTION ===== */
.stats {
  padding: var(--spacing-3xl) 0;
  background: rgba(26, 78, 138, 0.05);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.stat-label {
  color: var(--color-gray);
  font-size: 1rem;
}

/* ===== SECTION HEADERS ===== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-gray);
  max-width: 42rem;
  margin: 0 auto;
}

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

/* ===== BENEFITS SECTION ===== */
.benefits {
  padding: var(--spacing-4xl) 0;
}

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

/* ===== CARD STYLES ===== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: box-shadow var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-black);
}

.card-description {
  color: var(--color-gray);
  line-height: 1.7;
}

/* ===== SERVICES SECTION ===== */
.services {
  padding: var(--spacing-4xl) 0;
  background: var(--color-neutral);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2xl);
  max-width: 80rem;
  margin: 0 auto;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
}

.service-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.service-description {
  color: var(--color-gray);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.service-list {
  margin-bottom: var(--spacing-lg);
}

.service-list li {
  padding: var(--spacing-sm) 0;
  line-height: 1.6;
}

/* ===== TESTIMONIALS SECTION ===== */
.testimonials {
  padding: var(--spacing-4xl) 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.testimonial-card {
  background: var(--color-neutral);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.testimonial-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(26, 78, 138, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.testimonial-name {
  font-weight: 700;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--color-gray);
}

.testimonial-text {
  color: var(--color-gray);
  line-height: 1.7;
  font-style: italic;
}

/* ===== CTA SECTION ===== */
.cta {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.cta-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
}

.cta-description {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2xl);
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
  opacity: 0.95;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
}

/* ===== MISSION SECTION ===== */
.mission {
  padding: var(--spacing-4xl) 0;
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  max-width: 72rem;
  margin: 0 auto;
}

.mission-text {
  font-size: 1.125rem;
  color: var(--color-gray);
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.mission-image {
  position: relative;
  height: 400px;
}

.mission-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

/* ===== VALUES SECTION ===== */
.values {
  padding: var(--spacing-4xl) 0;
  background: var(--color-neutral);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
}

.value-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
}

.value-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
}

.value-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.value-description {
  color: var(--color-gray);
}

/* ===== METHOD SECTION ===== */
.method {
  padding: var(--spacing-4xl) 0;
}

.method-steps {
  max-width: 56rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.step-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  display: flex;
  gap: var(--spacing-xl);
}

.step-number {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.step-description {
  color: var(--color-gray);
  line-height: 1.7;
}

/* ===== FAQ SECTION ===== */
.faq-section {
  padding: var(--spacing-4xl) 0;
}

.faq-container {
  max-width: 56rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-xl);
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-base);
}

.faq-question:hover {
  background: var(--color-neutral);
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: 300;
  transition: transform var(--transition-base);
  flex-shrink: 0;
  margin-left: var(--spacing-lg);
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer p {
  padding: 0 var(--spacing-xl) var(--spacing-xl);
  color: var(--color-gray);
  line-height: 1.7;
}

.faq-cta {
  margin-top: var(--spacing-4xl);
  text-align: center;
}

.faq-cta-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.faq-cta-description {
  color: var(--color-gray);
  margin-bottom: var(--spacing-lg);
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
}

.footer-text {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-heading {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.footer-links li {
  margin-bottom: var(--spacing-md);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-base);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-xl);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero-title,
  .page-title {
    font-size: 2.5rem;
  }

  .section-title,
  .cta-title {
    font-size: 2rem;
  }

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

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

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }

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

  .nav-menu {
    position: fixed;
    top: 73px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-link {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
  }

  .hero-grid,
  .mission-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: var(--spacing-3xl) 0;
  }

  .hero-title,
  .page-title {
    font-size: 2rem;
  }

  .hero-description,
  .page-subtitle {
    font-size: 1rem;
  }

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

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

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

  .section-title,
  .cta-title {
    font-size: 1.75rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

  .hero-buttons,
  .cta-buttons {
    flex-direction: column;
  }

  .whatsapp-float {
    width: 56px;
    height: 56px;
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .hero-title,
  .page-title {
    font-size: 1.75rem;
  }

  .section-title,
  .cta-title {
    font-size: 1.5rem;
  }

  .btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
  }
}