/* ============================================
   SISTEMA DE VALIDACIÓN - ESTILOS MODERNOS
   ============================================ */

/* === VARIABLES === */
:root {
  /* Colores principales */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  
  --color-secondary: #ec4899;
  --color-secondary-dark: #db2777;
  
  --color-accent: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  
  /* Colores de fondo */
  --bg-primary: #0a0a0f;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --bg-card: rgba(255, 255, 255, 0.03);
  
  /* Colores de texto */
  --text-primary: #ffffff;
  --text-secondary: #b3b3b3;
  --text-tertiary: #6b7280;
  
  /* Efectos */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.4);
  
  --glow-primary: 0 0 20px rgba(99, 102, 241, 0.5);
  --glow-secondary: 0 0 20px rgba(236, 72, 153, 0.5);
  
  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Espaciado */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Navbar */
  --navbar-height: 80px;
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-tertiary) 100%);
  background-attachment: fixed;
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: rgba(26, 26, 46, 0.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(26, 26, 46, 0.95);
  box-shadow: var(--shadow-lg);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: 'Poppins', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  transition: transform var(--transition-fast);
}

.navbar-brand i {
  font-size: 1.8rem;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-text {
  letter-spacing: -0.02em;
}

.brand-highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-brand:hover {
  transform: translateY(-2px);
}

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

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.nav-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: -1;
}

.nav-link:hover {
  color: var(--text-primary);
  transform: translateY(-2px);
}

.nav-link:hover::before {
  opacity: 0.1;
}

.nav-link-login {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: var(--glow-primary);
}

.nav-link-login::before {
  background: rgba(255, 255, 255, 0.2);
}

.nav-link-login:hover {
  box-shadow: 0 0 30px rgba(99, 102, 241, 0.8);
  transform: translateY(-2px);
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.navbar-toggle span {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

/* === HERO SECTION === */
.hero {
  position: relative;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--navbar-height) + var(--spacing-2xl));
  padding-bottom: var(--spacing-2xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(236, 72, 153, 0.15) 0%, transparent 50%);
}

.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(2px 2px at 20% 30%, rgba(255, 255, 255, 0.1), transparent),
    radial-gradient(2px 2px at 60% 70%, rgba(255, 255, 255, 0.1), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.1), transparent),
    radial-gradient(1px 1px at 80% 10%, rgba(255, 255, 255, 0.1), transparent),
    radial-gradient(2px 2px at 90% 60%, rgba(255, 255, 255, 0.1), transparent);
  background-size: 200px 200px, 300px 300px, 150px 150px, 250px 250px, 180px 180px;
  background-position: 0 0, 40px 60px, 130px 270px, 70px 100px, 150px 50px;
  animation: particle-animation 120s linear infinite;
}

@keyframes particle-animation {
  0% { background-position: 0 0, 40px 60px, 130px 270px, 70px 100px, 150px 50px; }
  100% { background-position: 200px 200px, 240px 260px, 330px 470px, 270px 300px, 350px 250px; }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  animation: fadeInUp 1s ease;
}

.hero-title {
  font-family: 'Poppins', sans-serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  display: block;
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 600;
  margin-top: var(--spacing-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-top: var(--spacing-md);
  animation: fadeInUp 1s ease 0.2s backwards;
}

/* === SERVICES SECTION === */
.services-section {
  padding: var(--spacing-2xl) 0;
  position: relative;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.service-card {
  position: relative;
  text-decoration: none;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  animation: fadeInUp 0.8s ease backwards;
  animation-delay: var(--animation-delay);
  cursor: pointer;
}

.service-card-inner {
  position: relative;
  height: 100%;
  min-height: 200px;
}

.service-card-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--card-color) 0%, var(--card-color-secondary) 100%);
  opacity: 0.1;
  transition: all var(--transition-slow);
}

.service-card:hover .service-card-bg {
  opacity: 0.2;
  transform: scale(1.1);
}

.service-card-content {
  position: relative;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
  z-index: 1;
}

.service-logo {
  width: 60px;
  height: 60px;
  object-fit: contain;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
  transition: transform var(--transition-normal);
}

.service-icon {
  font-size: 3.5rem;
  color: var(--card-color);
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
  transition: transform var(--transition-normal);
}

.service-card:hover .service-logo,
.service-card:hover .service-icon {
  transform: scale(1.1) translateY(-5px);
}

.service-name {
  font-family: 'Poppins', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-fast);
}

.service-description {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
  line-height: 1.5;
}

.service-arrow {
  margin-top: auto;
  padding-top: var(--spacing-md);
  color: var(--card-color);
  font-size: 1.5rem;
  opacity: 0;
  transform: translateX(-10px);
  transition: all var(--transition-normal);
}

.service-card:hover .service-arrow {
  opacity: 1;
  transform: translateX(0);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 
              0 0 40px var(--card-color);
  border-color: var(--card-color);
}

/* === NO SERVICES === */
.no-services {
  text-align: center;
  padding: var(--spacing-2xl);
  color: var(--text-secondary);
}

.no-services i {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.5;
}

.no-services h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

/* === NOTICE SECTION === */
.notice-section {
  padding: var(--spacing-xl) 0 var(--spacing-2xl);
}

.notice-card {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  backdrop-filter: blur(10px);
  animation: fadeInUp 1s ease 0.4s backwards;
}

.notice-icon {
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1.5rem;
}

.notice-content {
  flex: 1;
}

.notice-title {
  font-family: 'Poppins', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.notice-text {
  color: var(--text-secondary);
  line-height: 1.6;
}

.notice-text strong {
  color: var(--color-primary-light);
  font-weight: 600;
}

/* === FOOTER === */
.footer {
  background: rgba(26, 26, 46, 0.8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: 'Poppins', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.footer-brand i {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.footer-links a {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.footer-copyright {
  color: var(--text-tertiary);
  font-size: 0.9rem;
  margin-top: var(--spacing-sm);
}

/* === ANIMATIONS === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* === RESPONSIVE === */

/* Extra Small devices (móviles pequeños) */
@media (max-width: 480px) {
  :root {
    --navbar-height: 70px;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.25rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .navbar-container {
    padding: 0 var(--spacing-sm);
  }
  
  .navbar-brand {
    font-size: 1.2rem;
  }
  
  .navbar-brand i {
    font-size: 1.5rem;
  }
  
  .brand-text {
    font-size: 1.1rem;
  }
  
  .hero {
    min-height: 45vh;
    padding-top: calc(var(--navbar-height) + var(--spacing-md));
    padding-bottom: var(--spacing-lg);
  }
  
  .hero-title {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-subtitle {
    font-size: 1rem;
    margin-top: var(--spacing-xs);
  }
  
  .hero-description {
    font-size: 0.95rem;
    padding: 0 var(--spacing-xs);
  }
  
  .services-section {
    padding: var(--spacing-lg) 0;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
  }
  
  .service-card-inner {
    min-height: 180px;
  }
  
  .service-card-content {
    padding: var(--spacing-md);
  }
  
  .service-logo {
    width: 50px;
    height: 50px;
    margin-bottom: var(--spacing-sm);
  }
  
  .service-icon {
    font-size: 2.8rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .service-name {
    font-size: 1.2rem;
    margin-bottom: 0;
  }
  
  .service-description {
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
  }
  
  .notice-section {
    padding: var(--spacing-lg) 0;
  }
  
  .notice-card {
    padding: var(--spacing-md);
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-sm);
  }
  
  .notice-icon {
    width: 45px;
    height: 45px;
    margin: 0 auto;
    font-size: 1.3rem;
  }
  
  .notice-title {
    font-size: 1.1rem;
  }
  
  .notice-text {
    font-size: 0.9rem;
  }
  
  .footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  
  .footer-brand {
    font-size: 1.1rem;
  }
  
  .footer-links {
    gap: var(--spacing-md);
    font-size: 0.9rem;
  }
  
  .footer-copyright {
    font-size: 0.85rem;
  }
}

/* Small devices (móviles) */
@media (max-width: 768px) {
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-menu {
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-sm);
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
    z-index: 999;
    max-height: calc(100vh - var(--navbar-height));
    overflow-y: auto;
  }
  
  .navbar-menu.active {
    transform: translateX(0);
  }
  
  .nav-link {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-md);
    font-size: 1rem;
  }
  
  .hero {
    min-height: 50vh;
    padding-top: calc(var(--navbar-height) + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .hero-description {
    font-size: 1rem;
  }
  
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .service-card:hover {
    transform: translateY(-5px);
  }
  
  .notice-card {
    flex-direction: column;
    text-align: center;
  }
  
  .notice-icon {
    margin: 0 auto;
  }
}

/* Medium devices (tablets) */
@media (min-width: 769px) and (max-width: 1024px) {
  :root {
    --navbar-height: 75px;
  }
  
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
  
  .hero {
    min-height: 55vh;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.4rem;
  }
  
  .service-card-inner {
    min-height: 220px;
  }
}

/* Large tablets y pantallas medianas */
@media (min-width: 1025px) and (max-width: 1280px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .container {
    max-width: 1100px;
  }
}

/* Landscape mode en móviles */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding-top: calc(var(--navbar-height) + var(--spacing-md));
    padding-bottom: var(--spacing-md);
  }
  
  .hero-title {
    font-size: 1.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.1rem;
  }
  
  .hero-description {
    font-size: 0.95rem;
  }
  
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }