/* Science4Likes - New Pink & Black Theme */
:root {
  --color-white: #ffffff;
  --color-black: #000000;
  --color-primary: #F93372;    /* Rosa vibrante principal */
  --color-secondary: #FED6E3;  /* Rosa pastel suave */
  --color-accent: #F93372;
  
  /* Grises rediseñados con tintes rosados */
  --color-gray-50: #fef7f9;
  --color-gray-100: #fce7ef;
  --color-gray-200: #f8c9d6;
  --color-gray-300: #f1a8be;
  --color-gray-400: #d67394;
  --color-gray-500: #8b4e66;
  --color-gray-600: #6b3951;
  --color-gray-700: #4a2637;
  --color-gray-800: #2a1720;
  
  /* Sombras con toque rosado */
  --shadow-sm: 0 1px 2px 0 rgba(249, 51, 114, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(249, 51, 114, 0.1), 0 2px 4px -1px rgba(249, 51, 114, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(249, 51, 114, 0.1), 0 4px 6px -2px rgba(249, 51, 114, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(249, 51, 114, 0.1), 0 10px 10px -5px rgba(249, 51, 114, 0.04);
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #F93372 0%, #FED6E3 100%);
  --gradient-secondary: linear-gradient(135deg, #FED6E3 0%, #ffffff 100%);
  --gradient-dark: linear-gradient(135deg, #000000 0%, #2a1720 100%);
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--color-black);
  background: var(--gradient-secondary);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

/* Brand Logo Containers - Force perfect circles */
.brand-logo-container {
  border-radius: 50%;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  flex-shrink: 0;
  border: 2px solid rgba(249, 51, 114, 0.2);
  transition: all 0.3s ease;
}

.brand-logo-container:hover {
  transform: scale(1.05);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.brand-logo-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.brand-logo-container-tiny {
  width: 12px;
  height: 12px;
}

.brand-logo-container-small {
  width: 16px;
  height: 16px;
}

.brand-logo-container-medium {
  width: 24px;
  height: 24px;
}

.brand-logo-container-large {
  width: 32px;
  height: 32px;
}

.brand-logo-container-preview {
  width: 40px;
  height: 40px;
}

/* Legacy brand logo styles - still needed for direct img usage */
.brand-logo {
  border-radius: 50% !important;
  object-fit: cover;
  display: block;
  background: #f0f0f0;
}

.brand-logo-tiny {
  width: 12px;
  height: 12px;
}

.brand-logo-small {
  width: 16px;
  height: 16px;
}

.brand-logo-medium {
  width: 24px;
  height: 24px;
}

.brand-logo-large {
  width: 32px;
  height: 32px;
}

.brand-logo-preview {
  width: 40px;
  height: 40px;
}

/* Fallback for brand logos */
.brand-initials {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.brand-initials:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.brand-initials-tiny {
  width: 12px;
  height: 12px;
  font-size: 6px;
}

.brand-initials-small {
  width: 16px;
  height: 16px;
  font-size: 8px;
}

.brand-initials-medium {
  width: 24px;
  height: 24px;
  font-size: 10px;
}

.brand-initials-large {
  width: 32px;
  height: 32px;
  font-size: 12px;
}

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

/* Header/Navigation */
.header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 2px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-md);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  min-height: 65px;
  max-height: 80px;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  transition: all 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

/* Logos específicos en header */
.main-logo {
  height: 120px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: all 0.3s ease;
}

.main-logo:hover {
  transform: scale(1.05);
}

.nethod-logo {
  height: 60px;
  width: auto;
  max-width: 100px;
  object-fit: contain;
  opacity: 0.7;
  transition: all 0.3s ease;
}

.nethod-logo:hover {
  opacity: 1;
  transform: scale(1.1);
}

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

.nav-link {
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--spacing-sm) 0.75rem;
  border-radius: 20px;
  border-bottom: 2px solid transparent;
  transition: all 0.3s ease;
  text-decoration: none;
  color: var(--color-black);
  position: relative;
}

/* Navigation Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  min-width: 150px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--color-black);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
  border-radius: 6px;
  margin: 2px;
}

.dropdown-link:hover {
  background: var(--color-gray-100);
  color: var(--color-primary);
}

.dropdown-link.active {
  background: var(--color-primary);
  color: var(--color-white);
}

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

.nav-link.active {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

.logout-btn {
  background: var(--gradient-dark);
  border: none;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  color: var(--color-white);
  border-radius: 15px;
  box-shadow: var(--shadow-sm);
}

.logout-btn:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* Login específico */
.login-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-secondary);
  background-attachment: fixed;
  padding: var(--spacing-md);
  position: relative;
}

.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 70%, rgba(249, 51, 114, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 30%, rgba(254, 214, 227, 0.2) 0%, transparent 50%);
  z-index: 0;
}

.login-box {
  width: 100%;
  max-width: 400px;
  padding: var(--spacing-2xl);
  border: 2px solid var(--color-secondary);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 1;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 50px -12px rgba(249, 51, 114, 0.25);
}

.login-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.login-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-header p {
  color: var(--color-gray-600);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
  color: var(--color-black);
}

.form-group input {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: 2px solid var(--color-gray-200);
  background-color: var(--color-white);
  color: var(--color-black);
  font-family: inherit;
  font-size: 1rem;
  border-radius: 15px;
  transition: all 0.3s ease;
}

.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(249, 51, 114, 0.1);
  transform: translateY(-2px);
}

.error-message {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
  border: 2px solid #fca5a5;
  border-radius: 15px;
  margin-bottom: var(--spacing-lg);
  color: #dc2626;
  font-size: 0.875rem;
  box-shadow: var(--shadow-sm);
  font-weight: 500;
}

.btn-login {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: none;
  background: var(--gradient-primary);
  color: var(--color-white);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 25px;
  box-shadow: var(--shadow-md);
}

.btn-login:hover {
  background: var(--gradient-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.login-info {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-md);
  background: var(--color-secondary);
  border-radius: 15px;
  font-size: 0.75rem;
  color: var(--color-gray-700);
  text-align: center;
  border: 1px solid rgba(249, 51, 114, 0.2);
}

.login-info p {
  margin-bottom: var(--spacing-sm);
}

.login-info p:last-child {
  margin-bottom: 0;
}

/* Tipografía */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--color-black);
}

h1 { 
  font-size: 2.5rem; 
  font-weight: 700; 
  letter-spacing: -0.02em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h2 { 
  font-size: 2rem; 
  font-weight: 600; 
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

h3 { 
  font-size: 1.5rem; 
  font-weight: 600;
  color: var(--color-black);
}

h4 { 
  font-size: 1.25rem; 
  font-weight: 500;
  color: var(--color-gray-700);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-gray-700);
  line-height: 1.7;
}

/* Botones generales */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--color-primary);
  background-color: transparent;
  color: var(--color-primary);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 20px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left 0.3s ease;
  z-index: -1;
}

.btn:hover {
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:hover::before {
  left: 0;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--gradient-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

/* Cards */
.card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 2px solid var(--color-secondary);
  padding: var(--spacing-xl);
  border-radius: 20px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transition: height 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.card:hover::before {
  height: 8px;
}

/* Grid layouts */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Métricas */  
.metric {
  text-align: center;
  padding: var(--spacing-lg);
  background: rgba(255, 255, 255, 0.8);
  border-radius: 15px;
  border: 2px solid var(--color-secondary);
  transition: all 0.3s ease;
}

.metric:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.metric-label {
  font-size: 0.875rem;
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

/* Video thumbnails */
.video-thumbnail {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 15px;
  border: 2px solid rgba(249, 51, 114, 0.1);
  box-shadow: var(--shadow-sm);
}

.video-thumbnail:hover {
  transform: scale(1.05) translateY(-5px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
}

.video-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.video-thumbnail:hover img {
  transform: scale(1.1);
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

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

/* Nuevos efectos y animaciones */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

@keyframes slideInFromTop {
  0% {
    transform: translateY(-30px);
    opacity: 0;
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-slide-in {
  animation: slideInFromTop 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .nav-menu {
    gap: var(--spacing-sm);
    flex-wrap: wrap;
  }
  
  .nav-link {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
  }
  
  .nav-dropdown-menu {
    min-width: 120px;
    left: -20px;
  }
  
  .dropdown-link {
    font-size: 0.75rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .main-logo {
    height: 40px;
    max-width: 170px;
  }
  
  .nethod-logo {
    height: 18px;
    max-width: 80px;
  }
  
  .nav {
    min-height: 55px;
    max-height: 70px;
    padding: var(--spacing-xs) 0;
  }
  
  .login-box {
    margin: var(--spacing-md);
    padding: var(--spacing-xl);
  }
  
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.75rem;
  }
}

/* Estilos adicionales para elementos específicos */

/* Mejoras en selectores */
select {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-gray-200);
  border-radius: 10px;
  background: var(--color-white);
  color: var(--color-black);
  font-family: inherit;
  transition: all 0.3s ease;
}

select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(249, 51, 114, 0.1);
}

/* Mejoras en inputs */
input[type="text"], input[type="search"] {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-gray-200);
  border-radius: 10px;
  background: var(--color-white);
  color: var(--color-black);
  font-family: inherit;
  transition: all 0.3s ease;
}

input[type="text"]:focus, input[type="search"]:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(249, 51, 114, 0.1);
  transform: translateY(-2px);
}

/* Tablas mejoradas */
table {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--color-secondary);
}

th {
  background: var(--gradient-primary) !important;
  color: var(--color-white) !important;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr:nth-child(even) {
  background: rgba(249, 51, 114, 0.03) !important;
}

tr:hover {
  background: rgba(249, 51, 114, 0.08) !important;
  transform: translateY(-1px);
  transition: all 0.2s ease;
}

/* Badges y etiquetas */
.badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 10px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

::-webkit-scrollbar-track {
  background: var(--color-secondary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-primary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Loading states */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(249, 51, 114, 0.2), transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% { left: -100%; }
  100% { left: 100%; }
}