/* ============================================
   Clouser Landing Page - Estilos CSS
   Estilo: Minimalista, Moderno, Artesanal/Clásico
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300;0,9..144,400;0,9..144,500;0,9..144,600;0,9..144,700;1,9..144,400&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

/* Variables */
:root {
  /* Colores principales */
  --color-bg: #faf9f7;
  --color-bg-alt: #f4f2ef;
  --color-bg-dark: #1a1a1a;
  --color-bg-card: #ffffff;
  
  /* Texto */
  --color-text: #1a1a1a;
  --color-text-light: #5c5c5c;
  --color-text-muted: #8a8a8a;
  --color-text-inverse: #faf9f7;
  
  /* Acentos */
  --color-primary: #c9a227;
  --color-primary-dark: #a68520;
  --color-primary-light: #e8d596;
  --color-secondary: #2c3e50;
  --color-secondary-dark: #1a252f;
  
  /* Estados */
  --color-success: #2d6a4f;
  --color-warning: #bc6c25;
  --color-danger: #9b2226;
  
  /* Borders */
  --color-border: #e5e2dc;
  --color-border-dark: #d4d0c8;
  
  /* Tipografía */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Espaciado */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  --space-4xl: 128px;
  
  /* Radios */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Sombras */
  --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 26, 26, 0.06);
  --shadow-lg: 0 8px 24px rgba(26, 26, 26, 0.08);
  --shadow-xl: 0 16px 48px rgba(26, 26, 26, 0.12);
  
  /* Transiciones */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  
  /* Contenedor */
  --max-width: 1200px;
  --max-width-narrow: 800px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Grain overlay para textura artesanal */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.03;
  z-index: 9999;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
}

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

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

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

/* ============================================
   Tipografía
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
  font-weight: 400;
}

h2 {
  font-size: clamp(2rem, 4vw + 0.5rem, 3rem);
}

h3 {
  font-size: clamp(1.5rem, 2vw + 0.5rem, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  color: var(--color-text-light);
}

.text-sm {
  font-size: 0.875rem;
}

.text-lg {
  font-size: 1.125rem;
}

.text-xl {
  font-size: 1.25rem;
  line-height: 1.5;
}

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

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

/* ============================================
   Layout
   ============================================ */

.landing-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.landing-container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-3xl) 0;
}

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

.section--dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.section--dark p {
  color: rgba(250, 249, 247, 0.7);
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(250, 249, 247, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-base);
}

.navbar--scrolled {
  padding: var(--space-sm) 0;
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-xl);
}

.navbar__logo {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.navbar__logo span {
  color: var(--color-primary);
}

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

.navbar__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-light);
  transition: color var(--transition-fast);
  position: relative;
}

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

.navbar__link:hover {
  color: var(--color-text);
}

.navbar__link:hover::after {
  width: 100%;
}

.navbar__cta {
  margin-left: var(--space-md);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition-fast);
}

/* Mobile menu */
@media (max-width: 768px) {
  .navbar__nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-xl);
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    gap: var(--space-lg);
  }

  .navbar__nav.active {
    transform: translateX(0);
  }

  .navbar__toggle {
    display: flex;
  }

  .navbar__cta {
    margin-left: 0;
    width: 100%;
  }
}

/* ============================================
   Botones
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-bg-dark);
  box-shadow: 0 2px 8px rgba(201, 162, 39, 0.3);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(201, 162, 39, 0.4);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border-dark);
}

.btn--secondary:hover {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-bg);
}

.btn--dark {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.btn--dark:hover {
  background: var(--color-secondary-dark);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-light);
  padding: var(--space-sm) var(--space-md);
}

.btn--ghost:hover {
  color: var(--color-text);
}

.btn--lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
}

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

.btn--icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--space-4xl) + 60px);
  padding-bottom: var(--space-3xl);
  position: relative;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__content {
  max-width: 700px;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__title em {
  font-style: italic;
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: 1.25rem;
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  justify-content: center;
}

.hero__stats {
  display: flex;
  gap: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  justify-content: center;
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  color: var(--color-text);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: var(--space-xs);
}

@media (max-width: 968px) {
  .hero__inner {
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__subtitle {
    max-width: 100%;
  }
}

/* ============================================
   Problem/Solution Section
   ============================================ */

.problem {
  text-align: center;
}

.problem__header {
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.problem__title {
  margin-bottom: var(--space-md);
}

.problem__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.problem__card {
  background: var(--color-bg-card);
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  text-align: left;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

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

.problem__card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

.problem__card-title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.problem__card p {
  font-size: 0.9375rem;
  line-height: 1.6;
}

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

/* ============================================
   How It Works Section
   ============================================ */

.how-it-works__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.how-it-works__title {
  margin-bottom: var(--space-md);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-border) 100%);
}

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

.step__number {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 500;
  color: var(--color-primary);
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

.step:hover .step__number {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-bg);
  transform: scale(1.1);
}

.step__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.step__desc {
  font-size: 0.9375rem;
  max-width: 200px;
  margin: 0 auto;
}

@media (max-width: 968px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }

  .steps::before {
    display: none;
  }
}

@media (max-width: 480px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Features Section
   ============================================ */

.features {
  text-align: center;
}

.features__header {
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.features__title {
  margin-bottom: var(--space-md);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.feature {
  padding: var(--space-xl);
  text-align: left;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.feature:hover {
  background: var(--color-bg-card);
  box-shadow: var(--shadow-md);
}

.feature__icon {
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-md);
  padding: var(--space-md);
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  color: var(--color-primary-dark);
}

.feature__icon svg {
  width: 100%;
  height: 100%;
}

.feature__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.feature p {
  font-size: 0.9375rem;
}

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

/* ============================================
   FAQ Section
   ============================================ */

.faq {
  text-align: center;
}

.faq__header {
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

.faq__title {
  margin-bottom: var(--space-md);
}

.faq__list {
  max-width: 700px;
  margin: 0 auto;
  text-align: left;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

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

.faq__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq__item.active .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq__item.active .faq__answer {
  max-height: 500px;
}

.faq__answer p {
  padding-bottom: var(--space-lg);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta__inner {
  max-width: 700px;
  margin: 0 auto;
}

.cta__title {
  margin-bottom: var(--space-md);
}

.cta__subtitle {
  font-size: 1.125rem;
  margin-bottom: var(--space-xl);
  opacity: 0.85;
}

.cta__form {
  display: flex;
  gap: var(--space-md);
  max-width: 500px;
  margin: 0 auto var(--space-lg);
}

.cta__input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-text-inverse);
  font-size: 1rem;
  outline: none;
  transition: all var(--transition-fast);
}

.cta__input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.cta__input:focus {
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.15);
}

.cta__note {
  font-size: 0.8125rem;
  opacity: 0.6;
}

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

/* ============================================
   Footer
   ============================================ */

.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand {
  max-width: 280px;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.footer__logo span {
  color: var(--color-primary);
}

.footer__desc {
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

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

.footer__social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

.footer__social a:hover {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}

.footer__social svg {
  width: 18px;
  height: 18px;
}

.footer__column h4 {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__links a {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.footer__copyright {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer__legal {
  display: flex;
  gap: var(--space-lg);
}

.footer__legal a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--color-text);
}

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .footer__brand {
    grid-column: span 2;
    max-width: 100%;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__brand {
    grid-column: 1;
  }
}

/* ============================================
   Animations
   ============================================ */

/* Fade in on scroll */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
}

.stagger-children.visible > *:nth-child(1) { animation: fadeInUp 0.6s 0.1s forwards; }
.stagger-children.visible > *:nth-child(2) { animation: fadeInUp 0.6s 0.2s forwards; }
.stagger-children.visible > *:nth-child(3) { animation: fadeInUp 0.6s 0.3s forwards; }
.stagger-children.visible > *:nth-child(4) { animation: fadeInUp 0.6s 0.4s forwards; }
.stagger-children.visible > *:nth-child(5) { animation: fadeInUp 0.6s 0.5s forwards; }
.stagger-children.visible > *:nth-child(6) { animation: fadeInUp 0.6s 0.6s forwards; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Utilities
   ============================================ */

.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;
}

.hidden {
  display: none !important;
}