/* ========================================
   CSS Variables & Design System
   ======================================== */
:root {
  /* Colors */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #0ea5e9;
  --color-accent: #10b981;
  
  --color-dark: #0f172a;
  --color-dark-800: #1e293b;
  --color-dark-700: #334155;
  --color-dark-600: #475569;
  
  --color-light: #f8fafc;
  --color-light-100: #f1f5f9;
  --color-light-200: #e2e8f0;
  --color-light-300: #cbd5e1;
  
  --color-white: #ffffff;
  --color-black: #000000;
  
  --color-success: #10b981;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  
  --color-whatsapp: #25d366;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* 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-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  
  /* Layout */
  --container-max: 1200px;
  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  z-index: 9999;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-6);
  }
}

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

.section-header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section-tag {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-dark-600);
  max-width: 600px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .section-title {
    font-size: var(--text-4xl);
  }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.4);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.btn--secondary:hover {
  background: #0284c7;
  transform: translateY(-2px);
}

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

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

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

.btn--whatsapp:hover {
  background: #128c7e;
  transform: translateY(-2px);
}

.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn--block {
  width: 100%;
}

.btn__loader {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: var(--color-white);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========================================
   Navbar
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-light-200);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar--scrolled {
  box-shadow: var(--shadow-md);
}

.navbar__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-xl);
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.logo-text {
  color: var(--color-dark);
}

.logo-accent {
  color: var(--color-primary);
}

.navbar__nav {
  display: none;
}

.navbar__list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  padding: var(--space-2) var(--space-4);
  font-weight: 500;
  color: var(--color-dark-600);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--color-primary);
  background: var(--color-light-100);
}

.navbar__link--cta {
  background: var(--color-primary);
  color: var(--color-white) !important;
  margin-left: var(--space-2);
}

.navbar__link--cta:hover {
  background: var(--color-primary-dark);
}

/* Mobile Toggle */
.navbar__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: var(--space-2);
}

.navbar__toggle-bar {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(2) {
  opacity: 0;
}

.navbar__toggle[aria-expanded="true"] .navbar__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

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

@media (min-width: 1024px) {
  .navbar__nav {
    display: block;
  }
  
  .navbar__toggle {
    display: none;
  }
}

/* Mobile Menu */
@media (max-width: 1023px) {
  .navbar__nav {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: var(--color-white);
    padding: var(--space-20) var(--space-6);
    z-index: 999;
    transition: right var(--transition-slow);
    box-shadow: var(--shadow-2xl);
  }
  
  .navbar__nav--open {
    display: block;
    right: 0;
  }
  
  .navbar__list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }
  
  .navbar__link {
    padding: var(--space-4);
    font-size: var(--text-lg);
  }
  
  .navbar__link--cta {
    margin-left: 0;
    margin-top: var(--space-4);
    text-align: center;
  }
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--navbar-height) + var(--space-12)) 0 var(--space-12);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 50%, var(--color-light-100) 100%);
  z-index: -2;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  z-index: -1;
}

.hero__container {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__title {
  font-size: var(--text-3xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-6);
}

.hero__title .highlight {
  color: var(--color-primary);
  position: relative;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-dark-600);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__highlights {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero__highlight {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  font-weight: 500;
  font-size: var(--text-sm);
}

.hero__highlight-icon {
  font-size: var(--text-lg);
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

.hero__audiences {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.hero__audience {
  font-size: var(--text-sm);
  color: var(--color-dark-600);
  padding: var(--space-3) var(--space-4);
  background: var(--color-light-100);
  border-radius: var(--radius-lg);
  border-left: 3px solid var(--color-primary);
}

/* Code Window */
.hero__visual {
  display: none;
}

.code-window {
  background: var(--color-dark);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-2xl);
}

.code-window__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-dark-800);
}

.code-window__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-window__dot--red { background: #ff5f56; }
.code-window__dot--yellow { background: #ffbd2e; }
.code-window__dot--green { background: #27c93f; }

.code-window__title {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-light-300);
}

.code-window__content {
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: var(--color-light-200);
  overflow-x: auto;
}

.code-keyword { color: #c792ea; }
.code-function { color: #82aaff; }
.code-variable { color: #f78c6c; }
.code-string { color: #c3e88d; }

/* Scroll Indicator */
.hero__scroll {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator__mouse {
  display: block;
  width: 26px;
  height: 40px;
  border: 2px solid var(--color-dark-600);
  border-radius: var(--radius-full);
  position: relative;
}

.scroll-indicator__wheel {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
  animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0; }
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--text-4xl);
  }
  
  .hero__cta {
    flex-direction: row;
    justify-content: center;
  }
  
  .hero__audiences {
    flex-direction: row;
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .hero {
    min-height: auto;
    padding: calc(var(--navbar-height) + var(--space-20)) 0 var(--space-20);
  }
  
  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
  
  .hero__content {
    text-align: left;
  }
  
  .hero__title {
    font-size: var(--text-5xl);
  }
  
  .hero__subtitle {
    margin-left: 0;
  }
  
  .hero__highlights {
    justify-content: flex-start;
  }
  
  .hero__cta {
    justify-content: flex-start;
  }
  
  .hero__audiences {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .hero__visual {
    display: block;
  }
}

/* ========================================
   Programs Section
   ======================================== */
.programs {
  padding: var(--space-20) 0;
  background: var(--color-light);
}

.programs__grid {
  display: grid;
  gap: var(--space-6);
}

/* Program Card */
.program-card {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  overflow: hidden;
}

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

.program-card--featured {
  border: 2px solid var(--color-primary);
}

.program-card__ribbon {
  position: absolute;
  top: var(--space-4);
  right: calc(-1 * var(--space-8));
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-10);
  font-size: var(--text-xs);
  font-weight: 600;
  transform: rotate(45deg);
}

.program-card__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.program-card__badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--color-light-100);
  color: var(--color-dark-600);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.program-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.program-card__description {
  color: var(--color-dark-600);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
}

.program-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.program-card__link {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  font-weight: 600;
  transition: all var(--transition-fast);
}

.program-card__link:hover {
  color: var(--color-primary-dark);
  gap: var(--space-2);
}

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

@media (min-width: 1024px) {
  .programs__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========================================
   Course Details Section
   ======================================== */
.courses {
  padding: var(--space-20) 0;
}

.course-detail {
  background: var(--color-white);
  border: 1px solid var(--color-light-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.course-detail__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-light-200);
}

.course-detail__icon {
  font-size: var(--text-4xl);
}

.course-detail__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.course-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.course-detail__outcomes {
  background: var(--color-light);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
}

.course-detail__outcomes h4 {
  font-size: var(--text-base);
  margin-bottom: var(--space-3);
}

.course-detail__outcomes ul {
  display: grid;
  gap: var(--space-2);
}

.course-detail__outcomes li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.course-detail__outcomes li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: bold;
}

@media (min-width: 768px) {
  .course-detail {
    padding: var(--space-8);
  }
  
  .course-detail__header {
    flex-direction: row;
    align-items: flex-start;
  }
  
  .course-detail__info {
    flex: 1;
  }
  
  .course-detail__outcomes ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ========================================
   Accordion
   ======================================== */
.accordion__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
  color: var(--color-dark);
}

.accordion__item {
  border: 1px solid var(--color-light-200);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-2);
  overflow: hidden;
}

.accordion__header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: var(--space-4);
  text-align: left;
  background: var(--color-light);
  transition: all var(--transition-fast);
  gap: var(--space-3);
}

.accordion__header:hover {
  background: var(--color-light-100);
}

.accordion__header:focus {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--color-primary);
}

.accordion__header[aria-expanded="true"] {
  background: var(--color-primary);
  color: var(--color-white);
}

.accordion__week {
  font-weight: 700;
  min-width: 70px;
  font-size: var(--text-sm);
}

.accordion__topic {
  flex: 1;
  font-weight: 500;
}

.accordion__question {
  flex: 1;
  font-weight: 500;
  font-size: var(--text-base);
}

.accordion__icon {
  width: 20px;
  height: 20px;
  position: relative;
  flex-shrink: 0;
}

.accordion__icon::before,
.accordion__icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition: transform var(--transition-fast);
}

.accordion__icon::before {
  width: 12px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.accordion__icon::after {
  width: 2px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.accordion__header[aria-expanded="true"] .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.accordion__content {
  padding: var(--space-4);
  background: var(--color-white);
}

.accordion__content ul {
  display: grid;
  gap: var(--space-2);
}

.accordion__content li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.accordion__content li::before {
  content: '•';
  color: var(--color-primary);
  font-weight: bold;
}

.accordion__content p {
  font-size: var(--text-sm);
  color: var(--color-dark-600);
  line-height: 1.7;
}

/* FAQ Accordion */
.accordion--faq {
  max-width: 800px;
  margin: 0 auto;
}

.accordion--faq .accordion__header {
  background: var(--color-white);
  border: none;
}

.accordion--faq .accordion__header:hover {
  background: var(--color-light);
}

.accordion--faq .accordion__header[aria-expanded="true"] {
  background: var(--color-light);
  color: var(--color-dark);
}

/* ========================================
   Benefits Section
   ======================================== */
.benefits {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-800) 100%);
}

.benefits .section-tag {
  background: rgba(255, 255, 255, 0.1);
}

.benefits .section-title {
  color: var(--color-white);
}

.benefits .section-subtitle {
  color: var(--color-light-300);
}

.benefits__grid {
  display: grid;
  gap: var(--space-6);
}

.benefit-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  text-align: center;
  transition: all var(--transition-base);
}

.benefit-card:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.benefit-card__icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.benefit-card__title {
  color: var(--color-white);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.benefit-card__text {
  color: var(--color-light-300);
  font-size: var(--text-sm);
}

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

@media (min-width: 1024px) {
  .benefits__grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
  padding: var(--space-20) 0;
  background: var(--color-light);
}

.pricing__grid {
  display: grid;
  gap: var(--space-6);
}

.pricing-card {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  overflow: hidden;
}

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

.pricing-card--featured {
  border: 2px solid var(--color-primary);
  transform: scale(1.02);
}

.pricing-card--featured:hover {
  transform: scale(1.02) translateY(-4px);
}

.pricing-card__ribbon {
  position: absolute;
  top: var(--space-4);
  right: calc(-1 * var(--space-8));
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-1) var(--space-10);
  font-size: var(--text-xs);
  font-weight: 600;
  transform: rotate(45deg);
}

.pricing-card__header {
  text-align: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-light-200);
}

.pricing-card__icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.pricing-card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-1);
}

.pricing-card__target {
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.pricing-card__price {
  text-align: center;
  margin-bottom: var(--space-6);
}

.pricing-card__amount {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
}

.pricing-card__currency {
  font-size: var(--text-base);
  color: var(--color-dark-600);
}

.pricing-card__features {
  margin-bottom: var(--space-6);
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: bold;
}

.pricing__note {
  text-align: center;
  margin-top: var(--space-8);
  padding: var(--space-4);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

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

@media (min-width: 1024px) {
  .pricing__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========================================
   FAQ Section
   ======================================== */
.faq {
  padding: var(--space-20) 0;
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
  padding: var(--space-20) 0;
  background: var(--color-light);
}

.testimonials__grid {
  display: grid;
  gap: var(--space-6);
}

.testimonial-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.testimonial-card__quote {
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-dark-700);
  margin-bottom: var(--space-6);
  position: relative;
  padding-left: var(--space-6);
}

.testimonial-card__quote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -10px;
  font-size: var(--text-4xl);
  color: var(--color-primary);
  font-family: Georgia, serif;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.testimonial-card__avatar {
  width: 48px;
  height: 48px;
  background: var(--color-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
}

.testimonial-card__name {
  font-weight: 600;
  color: var(--color-dark);
}

.testimonial-card__role {
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

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

@media (min-width: 1024px) {
  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ========================================
   About Section
   ======================================== */
.about {
  padding: var(--space-20) 0;
}

.about__grid {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

.about__content .section-tag {
  display: inline-block;
}

.about__content .section-title {
  text-align: left;
  margin-bottom: var(--space-6);
}

.about__text {
  color: var(--color-dark-600);
  margin-bottom: var(--space-4);
}

.about__stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-light-200);
}

.about__stat {
  text-align: center;
}

.about__stat-number {
  display: block;
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
}

.about__stat-label {
  font-size: var(--text-sm);
  color: var(--color-dark-600);
}

.about__image-placeholder {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: var(--radius-2xl);
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
}

.about__image-icon {
  font-size: 80px;
  margin-bottom: var(--space-4);
}

.about__image-placeholder p {
  font-size: var(--text-xl);
  font-weight: 600;
}

@media (min-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-800) 100%);
}

.contact .section-tag {
  background: rgba(255, 255, 255, 0.1);
}

.contact .section-title {
  color: var(--color-white);
}

.contact .section-subtitle {
  color: var(--color-light-300);
}

.contact__grid {
  display: grid;
  gap: var(--space-8);
}

/* Contact Form */
.contact__form-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.contact-form__row {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.form-group {
  margin-bottom: var(--space-4);
}

.form-group:last-child {
  margin-bottom: 0;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-dark);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  border: 2px solid var(--color-light-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
  background: var(--color-white);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-light-300);
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  background-size: 20px;
  padding-right: var(--space-10);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form__message {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  margin-top: var(--space-4);
}

.contact-form__message--success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.contact-form__message--error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* Contact Info */
.contact__info-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}

.contact__info-title {
  color: var(--color-white);
  font-size: var(--text-xl);
  margin-bottom: var(--space-6);
}

.contact__info-item {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.contact__info-icon {
  font-size: var(--text-2xl);
}

.contact__info-label {
  font-size: var(--text-sm);
  color: var(--color-light-300);
  margin-bottom: var(--space-1);
}

.contact__info-link {
  color: var(--color-white);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.contact__info-text {
  color: var(--color-white);
}

.contact__cta-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

@media (min-width: 768px) {
  .contact-form__row {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .contact__form-wrapper {
    padding: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .contact__grid {
    grid-template-columns: 1.5fr 1fr;
  }
}

/* ========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-dark);
  color: var(--color-light-300);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}

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

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-light-300);
}

.footer__title {
  color: var(--color-white);
  font-size: var(--text-base);
  margin-bottom: var(--space-4);
}

.footer__list li {
  margin-bottom: var(--space-2);
}

.footer__list a {
  font-size: var(--text-sm);
  color: var(--color-light-300);
  transition: color var(--transition-fast);
}

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

.footer__social-links {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  color: var(--color-light-300);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: var(--text-sm);
}

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

@media (min-width: 1024px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  z-index: 100;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ========================================
   WhatsApp Float Button
   ======================================== */
.whatsapp-float {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  width: 56px;
  height: 56px;
  background: var(--color-whatsapp);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  z-index: 100;
  animation: pulse 2s infinite;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.4);
  }
  50% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
}

/* ========================================
   Utility Classes
   ======================================== */
[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus visible for keyboard users */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Smooth scrolling disabled for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}