/* ----------------------------------- PALETA DE COLORES PRINCIPAL ----------------------------------- */
:root {
  /* --- Paleta Principal (Fondos) --- */
  --bg-main: #101010;
  --bg-secondary: #141414;
  --bg-tertiary: #181818;
    
  /* --- Paleta de Texto (Foregrounds) --- */
  --text-main: #EBEBEB;
  --text-secondary: #A8A8A8;
  --text-muted: #555555;
  --text-title-task: #E0E0E0;
    
  /* --- Bordes y Separadores --- */
  --border-main: #2A2A2A;
  --border-panel: #3B3B3B;
    
  /* --- Botones Funcionales --- */
  --btn-func-bg: #2B2B2B;
  --btn-func-hover: #262626;
  --btn-func-click: #0F0F0F;
    
  /* --- Tipografía --- */
  --font-family: 'Poppins', sans-serif;
  --font-size-base: 16px;
  --font-weight-regular: 400;
  --font-weight-semibold: 600;
    
  /* --- Espaciado y Radios --- */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
}


/* ----------------------------------- ESTILOS BASE | PRINCIPALES ----------------------------------- */
* {
  box-sizing: border-box;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  font-size: var(--font-size-base);
  min-height: 100vh;
  overflow-x: hidden;
}

a {
  color: var(--text-main);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

h1, h2, h3 {
  font-weight: var(--font-weight-semibold);
  color: var(--text-title-task);
  margin-bottom: 0.5em;
  line-height: 1.2;
}

h1 { font-size: 3.5em; }
h2 { font-size: 2.2em; }
h3 { font-size: 1.5em; }

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 0;
}

section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border-main);
  position: relative;
  overflow: hidden;
}

section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.4;
}

section > * {
  position: relative;
  z-index: 1;
}

/* FONDOS ESPECÍFICOS POR SECCIÓN */
.hero::before {
  background: radial-gradient(ellipse at center, rgba(59, 59, 59, 0.12) 0%, transparent 60%);
}

.problems::before {
  background-image: radial-gradient(circle, rgba(59, 59, 59, 0.15) 1px, transparent 1px);
  background-size: 24px 24px;
}

.value-proposition::before {
  background: radial-gradient(ellipse at center, rgba(59, 59, 59, 0.15) 0%, transparent 70%);
}

.features-highlight::before {
  background-image: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 40px,
    rgba(59, 59, 59, 0.08) 40px,
    rgba(59, 59, 59, 0.08) 42px
  );
}

.screenshots::before {
  background-image: 
    linear-gradient(rgba(42, 42, 42, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 42, 42, 0.3) 1px, transparent 1px);
  background-size: 60px 60px;
}

.testimonials::before {
  background: radial-gradient(ellipse at top left, rgba(59, 59, 59, 0.18) 0%, transparent 60%);
}

.final-cta::before {
  background: linear-gradient(135deg, rgba(59, 59, 59, 0.06) 0%, rgba(42, 42, 42, 0.12) 100%);
}


/* ----------------------------------- ESTILOS | UTILITIES ----------------------------------- */

/* Scrollbar personalizado */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border-panel);
  border-radius: 4px;
  transition: background 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: #4A4A4A;
}

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

.max-width-md {
  max-width: 720px;
  margin: 0 auto;
}

/* Material Icons */
.material-icons-round {
  font-family: 'Material Icons Rounded';
  font-weight: normal;
  font-style: normal;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: middle;
  line-height: 1;
  text-transform: none;
  letter-spacing: normal;
  white-space: nowrap;
  direction: ltr;
}

.icon-small { 
  font-size: 1.3em;
  line-height: 1;
}

.icon-large {
  font-size: 3.5em;
  line-height: 1;
  margin-bottom: 0.3em;
}


/* ----------------------------------- SISTEMA DE BOTONES PROFESIONAL ----------------------------------- */
.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.95em;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background-color: var(--btn-func-bg);
  color: var(--text-main);
  border-color: var(--border-panel);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  background-color: var(--btn-func-hover);
  border-color: #505050;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  background-color: var(--btn-func-click);
  border-color: #606060;
  transform: translateY(0) scale(0.98);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border-panel);
  box-shadow: 0 0 0 rgba(0, 0, 0, 0);
}

.btn-secondary:hover {
  color: var(--text-main);
  border-color: #505050;
  background-color: rgba(255, 255, 255, 0.03);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
  background-color: rgba(255, 255, 255, 0.01);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}


/* ----------------------------------- ANIMACIONES ----------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.animate-up {
  animation: fadeInUp 0.6s ease-out forwards;
}


/* ----------------------------------- ESTILOS | HEADER / NAVBAR ----------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(16, 16, 16, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-main);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  max-width: 1300px;
  margin: 0 auto;
  width: 92%;
}

/* ---------------- LOGO ---------------- */
.logo a {
  font-size: 1.4em;
  font-weight: var(--font-weight-semibold);
  color: var(--text-title-task);
  transition: color 0.3s ease;
  letter-spacing: -0.02em;
}

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

/* ---------------- NAVEGACIÓN ---------------- */
.main-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 24px); /* Espaciado dinámico según ancho */
  flex-wrap: wrap; /* Evita desbordamientos */
  justify-content: center;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 0.93em;
  font-weight: var(--font-weight-regular);
  position: relative;
  padding: 6px 0;
  transition: color 0.3s ease;
  white-space: nowrap;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--text-main);
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* ---------------- BOTÓN (CTA) ---------------- */
.main-nav a.nav-cta {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  background-color: var(--btn-func-bg);
  border: 2px solid var(--border-panel);
  color: var(--text-main);
  font-weight: var(--font-weight-medium);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-nav a.nav-cta::after {
  display: none;
}

.main-nav a.nav-cta:hover {
  background-color: var(--btn-func-hover);
  border-color: #505050;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* ---------------- RESPONSIVIDAD ---------------- */
@media (max-width: 1100px) {
  .main-nav ul {
    gap: 16px;
  }
}

@media (max-width: 850px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 12px 0;
  }

  .main-nav ul {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px 20px;
    margin-top: 8px;
  }

  .main-nav a.nav-cta {
    margin-top: 6px;
  }
}


/* ----------------------------------- ESTILOS | HERO SECTION ----------------------------------- */
.hero {
  padding-top: 140px;
  padding-bottom: 120px;
  position: relative;
  overflow: hidden;
}

/* Canvas de fondo animado */
.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Efecto de resplandor que sigue al cursor */
.cursor-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(
    circle,
    rgba(59, 59, 59, 0.15) 0%,
    rgba(59, 59, 59, 0.08) 30%,
    transparent 70%
  );
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 1;
  transition: opacity 0.3s ease;
  opacity: 0;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 70px;
  position: relative;
  z-index: 2;
}

.hero-content {
  flex: 1;
  min-width: 320px;
  animation: fadeInUp 0.8s ease-out;
  position: relative;
  z-index: 2;
}

.hero-visual {
  flex: 1;
  min-width: 320px;
  background: radial-gradient(ellipse at top, rgba(59, 59, 59, 0.15) 0%, transparent 60%);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-panel);
  height: 400px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.95em;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
  position: relative;
  z-index: 2;
}

.hero-content h1 {
  font-size: 3.2em;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.2em;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
  max-width: 620px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 28px;
}

.hero-description {
  max-width: 640px;
  font-size: 0.95em;
  color: var(--text-secondary);
  line-height: 1.7;
}


/* ----------------------------------- ESTILOS | PROBLEMAS / SOLUCIONES ----------------------------------- */
.problems {
  background-color: var(--bg-secondary);
}

.problems h2 {
  text-align: center;
  margin-bottom: 50px;
}

.problem-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.problem-item {
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-main);
  padding: 26px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.problem-item:hover {
  transform: translateY(-6px);
  border-color: #555555;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
  background-color: rgba(24, 24, 24, 0.8);
}

.problem-item h3 {
  margin-bottom: 12px;
  color: var(--text-title-task);
  font-size: 1.35em;
}

.problem-label,
.solution-label {
  font-size: 0.93em;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.solution-label strong {
  color: var(--text-main);
  font-weight: var(--font-weight-semibold);
}


/* ----------------------------------- ESTILOS | PROPUESTA DE VALOR ----------------------------------- */
.value-proposition {
  background-color: var(--bg-main);
}

.value-proposition h2 {
  text-align: center;
  margin-bottom: 20px;
}

.value-intro {
  text-align: center;
  margin-bottom: 50px;
  color: var(--text-secondary);
  font-size: 1.1em;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.value-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.value-list li {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-main);
  padding: 18px 22px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.95em;
  line-height: 1.6;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.value-list li:hover {
  transform: translateX(4px);
  border-color: #505050;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.value-list .check {
  color: #6EE7B7;
  font-size: 1.3em;
  margin-top: 2px;
  flex-shrink: 0;
}

.value-list strong {
  color: var(--text-title-task);
}


/* ----------------------------------- ESTILOS | FEATURES DESTACADAS ----------------------------------- */
.features-highlight h2 {
  text-align: center;
  margin-bottom: 50px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(20, 20, 20, 0.6) 100%);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-main);
  padding: 28px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(255, 255, 255, 0.03), transparent 50%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: #555555;
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
}

.feature-card h3 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 1.35em;
  color: var(--text-title-task);
}

.feature-card h3 .material-icons-round {
  color: var(--text-secondary);
  font-size: 1.4em;
}

.feature-card p {
  font-size: 0.95em;
  color: var(--text-secondary);
  line-height: 1.7;
}


/* ----------------------------------- ESTILOS | SCREENSHOTS ----------------------------------- */
.screenshots {
  background-color: var(--bg-secondary);
}

.screenshots h2 {
  text-align: center;
  margin-bottom: 20px;
}

.screenshots-intro {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 50px;
  font-size: 1.05em;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
}

.screenshot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.screenshot-item {
  background-color: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-panel);
  overflow: hidden;
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.screenshot-item:hover {
  transform: scale(1.03);
  border-color: #505050;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.screenshot-placeholder {
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.9em;
  background: radial-gradient(ellipse at center, rgba(59, 59, 59, 0.1) 0%, transparent 70%);
}

.screenshot-caption {
  padding: 18px 22px;
  background-color: var(--bg-tertiary);
  border-top: 1px solid var(--border-main);
}

.screenshot-caption h3 {
  font-size: 1.1em;
  margin-bottom: 6px;
  color: var(--text-main);
}

.screenshot-caption p {
  font-size: 0.9em;
  color: var(--text-secondary);
  line-height: 1.5;
}


/* ----------------------------------- ESTILOS | TESTIMONIOS ----------------------------------- */
.testimonials {
  background-color: var(--bg-main);
}

.testimonials h2 {
  text-align: center;
  margin-bottom: 50px;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
  max-width: 1100px;
  margin: 0 auto;
}

.testimonial-card {
  background-color: var(--bg-secondary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-main);
  padding: 28px;
  font-size: 0.95em;
  line-height: 1.7;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 4em;
  color: rgba(255, 255, 255, 0.05);
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card:hover {
  transform: translateY(-6px);
  border-color: #505050;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.testimonial-text {
  margin-bottom: 20px;
  color: var(--text-secondary);
  font-style: italic;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--border-main);
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--bg-tertiary);
  border: 2px solid var(--border-panel);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.3em;
  flex-shrink: 0;
}

.author-info h4 {
  font-size: 1em;
  color: var(--text-main);
  margin-bottom: 2px;
  font-weight: var(--font-weight-semibold);
}

.author-info p {
  font-size: 0.85em;
  color: var(--text-muted);
}


/* ----------------------------------- ESTILOS | CTA FINAL ----------------------------------- */
.final-cta {
  padding-top: 100px;
  padding-bottom: 100px;
  background-color: var(--bg-main);
}

.final-cta-inner {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(20, 20, 20, 0.8) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-panel);
  padding: 60px 40px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  position: relative;
  overflow: hidden;
}

.final-cta-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.03), transparent 60%);
  pointer-events: none;
}

.final-cta-inner h2 {
  font-size: 2.5em;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}

.final-cta-inner p {
  margin-bottom: 32px;
  font-size: 1.1em;
  color: var(--text-secondary);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.final-cta-inner .btn-primary {
  min-width: 250px;
  padding: 16px 40px;
  font-size: 1.05em;
  position: relative;
  z-index: 1;
}

.final-cta-inner .small-text {
  margin-top: 18px;
  font-size: 0.85em;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}


/* ----------------------------------- ESTILOS | FOOTER ----------------------------------- */
.site-footer {
  padding: 0px 0;
  border-top: 1px solid var(--border-main);
  color: var(--text-secondary);
  font-size: 0.9em;
  background-color: var(--bg-main);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
  width: 90%;
}

.footer-inner nav {
  display: flex;
  gap: 26px;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.site-footer a:hover {
  color: var(--text-main);
}


/* ----------------------------------- ESTILOS | RESPONSIVE ----------------------------------- */
@media (max-width: 900px) {
  .hero {
    padding-top: 100px;
    padding-bottom: 80px;
  }

  .hero-inner {
    flex-direction: column;
    gap: 50px;
  }

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

  .hero-content h1 {
    font-size: 2.6em;
  }

  .hero-subtitle,
  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    height: 300px;
    width: 100%;
  }

  section {
    padding: 80px 0;
  }

  .problem-list,
  .features-grid,
  .screenshot-grid,
  .testimonial-grid,
  .value-list {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
  }
}

@media (max-width: 600px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 0;
  }

  .main-nav ul {
    gap: 18px;
    flex-wrap: wrap;
    font-size: 0.9em;
  }

  h1 { font-size: 2.2em; }
  h2 { font-size: 1.8em; }
  h3 { font-size: 1.2em; }

  section {
    padding: 60px 0;
  }

  .hero {
    padding-top: 80px;
    padding-bottom: 60px;
  }

  .hero-content h1 {
    font-size: 2em;
  }

  .hero-subtitle {
    font-size: 1.05em;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .hero-actions .btn-primary,
  .hero-actions .btn-secondary {
    width: 100%;
  }

  .final-cta-inner {
    padding: 40px 24px;
  }

  .final-cta-inner h2 {
    font-size: 2em;
  }

  .final-cta-inner .btn-primary {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .problem-list,
  .features-grid,
  .screenshot-grid,
  .testimonial-grid,
  .value-list {
    grid-template-columns: 1fr;
  }
}