/*
 * FlowFinances - Landing Page Styles
 * Author: Julian Fauricio Valencia Marin
 * Description: Modern, responsive styles with brand color palette
 */

/* ===========================
   CSS VARIABLES
   =========================== */
:root {
  /* Colores principales — paleta FlowFinances: confianza + fluidez */
  --color-primary: #0EA5E9;        /* sky-500 — flow */
  --color-primary-light: #38BDF8;  /* sky-400 */
  --color-primary-dark: #0369A1;   /* sky-700 */
  --color-secondary: #10B981;      /* emerald-500 — money/success */
  --color-secondary-dark: #047857; /* emerald-700 */
  --color-accent: #06B6D4;         /* cyan-500 */
  --color-cta: #F97316;            /* orange-500 — CTAs cálidos */
  --color-cta-dark: #EA580C;       /* orange-600 */

  /* Fondos */
  --color-background: #FFFFFF;
  --color-background-secondary: #F8FAFC; /* slate-50 */
  --color-card: #FFFFFF;
  --color-card-secondary: #F0F9FF;        /* sky-50 */

  /* Textos */
  --color-text: #0F172A;            /* slate-900 */
  --color-text-secondary: #475569;  /* slate-600 — mejor contraste AA */
  --color-text-light: #94A3B8;      /* slate-400 */
  --color-text-on-primary: #FFFFFF;

  /* Bordes */
  --color-border: #E2E8F0;          /* slate-200 */
  --color-border-light: #F1F5F9;    /* slate-100 */
  --color-divider: #CBD5E1;         /* slate-300 */

  /* Estados */
  --color-success: #10B981;
  --color-error: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #0EA5E9 0%, #06B6D4 100%);
  --gradient-secondary: linear-gradient(135deg, #10B981 0%, #14B8A6 100%);
  --gradient-accent: linear-gradient(135deg, #0369A1 0%, #0EA5E9 60%, #06B6D4 100%);
  --gradient-cta: linear-gradient(135deg, #F97316 0%, #EA580C 100%);

  /* Sombras (slate-tinted, no más naranja) */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 8px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 24px rgba(15, 23, 42, 0.10);
  --shadow-xl: 0 24px 48px rgba(15, 23, 42, 0.14);
  --shadow-primary: 0 8px 24px rgba(14, 165, 233, 0.30);
  --shadow-cta: 0 8px 24px rgba(249, 115, 22, 0.35);

  /* Espaciado */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 80px;
  --spacing-4xl: 120px;

  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transiciones */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s ease;

  /* Tipografía — una sola familia: Inter */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Tamaños de fuente - Desktop */
  --text-xs: 14px;
  --text-sm: 16px;
  --text-base: 18px;
  --text-lg: 20px;
  --text-xl: 24px;
  --text-2xl: 28px;
  --text-3xl: 32px;
  --text-4xl: 40px;
  --text-5xl: 48px;
  --text-6xl: 56px;
}

/* Mobile typography adjustments */
@media (max-width: 767px) {
  :root {
    --text-xs: 12px;
    --text-sm: 14px;
    --text-base: 16px;
    --text-lg: 18px;
    --text-xl: 20px;
    --text-2xl: 24px;
    --text-3xl: 28px;
    --text-4xl: 32px;
    --text-5xl: 36px;
    --text-6xl: 40px;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  overflow-x: hidden;
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--text-6xl);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-primary-light);
}

a:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===========================
   LAYOUT UTILITIES
   =========================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-wide {
  max-width: 1400px;
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-alt {
  background-color: var(--color-background-secondary);
}

@media (max-width: 767px) {
  .section {
    padding: var(--spacing-2xl) 0;
  }
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-cta);
  color: #FFFFFF;
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(249, 115, 22, 0.45);
  color: #FFFFFF;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.30);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.20);
  color: #FFFFFF;
}

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

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ===========================
   CARDS
   =========================== */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

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

.card-icon {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-on-primary);
  font-size: 28px;
}

.card-title {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.card-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ===========================
   HEADER / NAVIGATION
   =========================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}

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

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

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: var(--transition);
}

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

.nav-link:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: var(--text-2xl);
  color: var(--color-text);
  cursor: pointer;
}

@media (max-width: 767px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-background);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md);
    gap: var(--spacing-sm);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-toggle {
    display: block;
  }
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
  background: var(--gradient-primary);
  color: var(--color-text-on-primary);
  padding: calc(var(--spacing-4xl) + 70px) 0 var(--spacing-4xl);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

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

.hero-text h1 {
  color: var(--color-text-on-primary);
  margin-bottom: var(--spacing-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--spacing-xl);
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
  animation: float 6s ease-in-out infinite;
}

.hero-image img {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

@media (max-width: 1023px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }
  
  .hero-cta {
    justify-content: center;
  }
}

@media (max-width: 767px) {
  .hero {
    padding: calc(var(--spacing-3xl) + 70px) 0 var(--spacing-3xl);
  }
  
  .hero-subtitle {
    font-size: var(--text-base);
  }
}

/* ===========================
   FEATURES SECTION
   =========================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

@media (max-width: 1023px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   HOW IT WORKS SECTION
   =========================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
  position: relative;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-text-on-primary);
  box-shadow: var(--shadow-lg);
}

.step-title {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-sm);
}

.step-text {
  color: var(--color-text-secondary);
}

@media (max-width: 767px) {
  .steps {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

/* ===========================
   SCREENSHOTS SECTION
   =========================== */
.screenshots-carousel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-2xl);
}

.screenshot {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  overflow: hidden;
}

.screenshot:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.screenshot img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  display: block;
}

/* ===========================
   BENEFITS SECTION
   =========================== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.benefit-card {
  background-color: var(--color-card);
  border: 2px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.benefit-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--gradient-primary);
  transition: var(--transition);
}

.benefit-card:hover {
  border-color: var(--color-accent);
  transform: translateX(8px);
}

.benefit-card:hover::before {
  height: 100%;
}

.benefit-icon {
  font-size: var(--text-5xl);
  margin-bottom: var(--spacing-md);
}

.benefit-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--spacing-sm);
}

@media (max-width: 767px) {
  .benefits-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   TESTIMONIALS SECTION
   =========================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.testimonial {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.testimonial:nth-child(even) {
  background-color: var(--color-card-secondary);
}

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

.testimonial-text {
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.testimonial-text::before {
  content: '"';
  font-size: var(--text-4xl);
  color: var(--color-accent);
  line-height: 0;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-on-primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-lg);
}

.testimonial-info {
  flex: 1;
}

.testimonial-name {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: 2px;
}

.testimonial-role {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
}

@media (max-width: 1023px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   FAQ SECTION
   =========================== */
.faq-list {
  max-width: 800px;
  margin: var(--spacing-2xl) auto 0;
}

.faq-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--color-primary-light);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  transition: var(--transition);
}

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

.faq-icon {
  color: var(--color-primary);
  transition: var(--transition);
  flex-shrink: 0;
  width: 24px;
  height: 24px;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

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

.faq-answer-content {
  padding: 0 var(--spacing-lg) var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

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

/* ===========================
   FOOTER
   =========================== */
.footer {
  background-color: #0F172A;
  color: rgba(255, 255, 255, 0.75);
  padding: var(--spacing-3xl) 0 var(--spacing-md);
}

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

.footer-section h4 {
  color: var(--color-text-on-primary);
  margin-bottom: var(--spacing-md);
  font-size: var(--text-lg);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
  font-size: var(--text-sm);
}

.footer-links a:hover {
  color: var(--color-primary-light);
  padding-left: 4px;
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
  font-size: var(--text-lg);
}

.social-link:hover {
  background: var(--gradient-primary);
  color: var(--color-text-on-primary);
  transform: translateY(-4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-md);
  text-align: center;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.6);
}

.footer-disclaimer {
  max-width: 800px;
  margin: var(--spacing-md) auto 0;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.6;
}

@media (max-width: 1023px) {
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ===========================
   FORM ELEMENTS
   =========================== */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-sm);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  background-color: var(--color-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.18);
}

.form-input.error,
.form-textarea.error {
  border-color: var(--color-error);
}

.form-error {
  color: var(--color-error);
  font-size: var(--text-xs);
  margin-top: var(--spacing-xs);
  display: none;
}

.form-input.error + .form-error,
.form-textarea.error + .form-error {
  display: block;
}

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

/* ===========================
   BADGES
   =========================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-free {
  background-color: rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.30);
  backdrop-filter: blur(8px);
}

.badge-secure {
  background-color: rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.30);
  backdrop-filter: blur(8px);
}

.badge-rating {
  background-color: rgba(255, 255, 255, 0.18);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.30);
  backdrop-filter: blur(8px);
}

/* ===========================
   SECTION HEADERS
   =========================== */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-primary-dark);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(14, 165, 233, 0.10);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: var(--text-5xl);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ===========================
   ANIMATIONS
   =========================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s ease-out;
}

.fade-in-delay-1 {
  animation: fadeIn 0.6s ease-out 0.1s backwards;
}

.fade-in-delay-2 {
  animation: fadeIn 0.6s ease-out 0.2s backwards;
}

.fade-in-delay-3 {
  animation: fadeIn 0.6s ease-out 0.3s backwards;
}

/* Scroll animations */
.scroll-animate {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-animate.animated {
  opacity: 1;
  transform: translateY(0);
}

/* ===========================
   UTILITIES
   =========================== */
.text-center {
  text-align: center;
}

.text-primary {
  color: var(--color-primary);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

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

.hidden {
  display: none;
}

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

/* ===========================
   SKIP TO CONTENT (a11y)
   =========================== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 8px;
  background: var(--color-primary-dark);
  color: #FFFFFF;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 9999;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 8px;
  color: #FFFFFF;
}

/* ===========================
   ICONS (SVG inline utility)
   =========================== */
.icon {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}

.icon-sm { width: 18px; height: 18px; }
.icon-lg { width: 32px; height: 32px; }
.icon-xl { width: 40px; height: 40px; }

/* ===========================
   HERO ENRIQUECIDO
   =========================== */
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #FFFFFF;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  backdrop-filter: blur(8px);
}

.hero-eyebrow-dot {
  width: 8px;
  height: 8px;
  background: #4ADE80;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.25);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.25); }
  50%      { box-shadow: 0 0 0 6px rgba(74, 222, 128, 0.40); }
}

.hero-cta-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: 12px;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.85);
  flex-wrap: wrap;
}

.hero-cta-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===========================
   WAITLIST INLINE FORM (Android)
   =========================== */
.waitlist {
  margin-top: var(--spacing-md);
  background: rgba(255, 255, 255, 0.10);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-md);
  padding: 14px;
  backdrop-filter: blur(8px);
  max-width: 460px;
}

.hero-content .waitlist {
  margin-left: 0;
  margin-right: 0;
}

.waitlist-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.waitlist-row {
  display: flex;
  gap: 8px;
}

.waitlist-input {
  flex: 1;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: #FFFFFF;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  min-width: 0;
}

.waitlist-input:focus {
  outline: none;
  border-color: var(--color-cta);
  box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.25);
}

.waitlist-btn {
  padding: 12px 18px;
  background: var(--color-text);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.waitlist-btn:hover {
  background: #1E293B;
  transform: translateY(-1px);
}

.waitlist-success {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  background: rgba(16, 185, 129, 0.20);
  border: 1px solid rgba(16, 185, 129, 0.40);
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-size: var(--text-sm);
  font-weight: 500;
}

.waitlist.is-success .waitlist-row { display: none; }
.waitlist.is-success .waitlist-success { display: flex; }

@media (max-width: 480px) {
  .waitlist-row { flex-direction: column; }
  .waitlist-btn { width: 100%; }
}

/* ===========================
   STICKY MOBILE CTA
   =========================== */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--color-border);
  padding: 12px 16px;
  z-index: 999;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  box-shadow: 0 -4px 16px rgba(15, 23, 42, 0.08);
}

.sticky-cta.is-visible {
  transform: translateY(0);
}

.sticky-cta-text {
  font-size: 13px;
  line-height: 1.3;
  color: var(--color-text);
}

.sticky-cta-text strong {
  display: block;
  color: var(--color-text);
  font-weight: 700;
}

.sticky-cta-text span {
  color: var(--color-text-secondary);
  font-size: 12px;
}

.sticky-cta .btn {
  flex-shrink: 0;
  padding: 10px 18px;
  font-size: 14px;
}

@media (max-width: 767px) {
  .sticky-cta { display: flex; }
  body.has-sticky-cta { padding-bottom: 80px; }
}

/* ===========================
   USE CASES (PERSONAS)
   =========================== */
.personas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.persona-card {
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: var(--transition);
  overflow: hidden;
}

.persona-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.persona-card > * { position: relative; z-index: 1; }

.persona-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
}

.persona-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary-dark);
  background: rgba(14, 165, 233, 0.10);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.persona-title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  line-height: 1.25;
}

.persona-text {
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.persona-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-primary-dark);
}

.persona-link:hover { gap: 10px; }

@media (max-width: 767px) {
  .personas-grid { grid-template-columns: 1fr; }
}

/* ===========================
   COMPARISON TABLE
   =========================== */
.comparison-wrap {
  margin-top: var(--spacing-2xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  box-shadow: var(--shadow-md);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.comparison-table th,
.comparison-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.comparison-table thead th {
  background: var(--color-background-secondary);
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-text);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.comparison-table thead th.is-featured {
  background: var(--gradient-primary);
  color: #FFFFFF;
  position: relative;
}

.comparison-table tbody tr:last-child th,
.comparison-table tbody tr:last-child td { border-bottom: none; }

.comparison-table tbody th {
  font-weight: 500;
  color: var(--color-text);
  background: #FFFFFF;
}

.comparison-table td {
  text-align: center;
  color: var(--color-text-secondary);
}

.comparison-table td.is-featured {
  background: rgba(14, 165, 233, 0.04);
  color: var(--color-secondary-dark);
  font-weight: 600;
}

.comparison-check { color: var(--color-success); }
.comparison-cross { color: var(--color-text-light); }

@media (max-width: 767px) {
  .comparison-wrap { overflow-x: auto; }
  .comparison-table { min-width: 560px; }
}

/* ===========================
   CARD ICON (con SVG)
   =========================== */
.card-icon svg {
  width: 28px;
  height: 28px;
  stroke: #FFFFFF;
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Focus visible accesible */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-cta);
  outline-offset: 3px;
  border-radius: 4px;
}