:root {
  /* Color Palette */
  --primary: #2a5298;
  --primary-dark: #1e3c72;
  --secondary: #e0fbfc;
  --secondary-dark: #98c1d9;
  --accent: #9b59b6;
  --danger: #e74c3c;
  --warning: #f39c12;
  --success: #0aac0a;
  --info: gray;
  --dark: #34495e;
  --darker: #2c3e50;
  --light: #ecf0f1;
  --lighter: #f2f2f2;
  --gray: #758283;
  --gray-light: #bdc3c7;
  --primary-color: #3498db;
  --secondary-color: #1e3c72;
  --network: #009933;
  --network-dark: #264547;
  --coder: #3498db;
  --coder-dark: #1a1919;
  --transparent: rgba(255, 255, 255, 0.1);
  
  /* Typography */
  --font-main: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Oxygen, Ubuntu, sans-serif;
  --font-code: 'Fira Code', 'Courier New', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 20px rgba(0,0,0,0.1);
}

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

body {
  font-family: var(--font-main);
  margin: 0;
  padding: 0;
  font-size:medium;
  color: var(--darker);
  background-color: var(--light);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
main {
  /*margin-top: var(--spacing-lg);*/
  /*box-shadow: var(--shadow-md);*/
  min-width: 85%;
  min-height: 100vh;
  position: sticky
}
aside {
  min-width: 10%;
  background-color: var(--darker);
  text-align: center;
  color: var(--gray-light);
  overflow: hidden;
}
.editor-container{
  height: 450px;  
  overflow: hidden;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  line-height: 1.3;
  color: var(--darker);
}

h1 {
  font-size: 2.25rem;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
}

/* Layout */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-md);
}
.tooltip-container {
  position: relative; /*relative: los elementos se posicionan de forma relativa a su posición normal.*/
  display: inline-block;
}

.tooltip-text {
  visibility: hidden;
  min-width: 50%;
  background-color: var(--primary-dark);
  color: var(--lighter);
  text-align: center;
  border-radius: 5%;
  border: 1px solid var(--primary);
  padding: 5px;
  position: absolute;
  z-index: 2;
  top: 10%;
  transform: translate(15%);
  opacity: 0;
  transition: opacity 0.3s;
}
.tooltip-container:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}
.container-competencia{
  display: flex;
  background-color: var(--darker);
}
.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -15px;
}

.col {
  flex: 1;
  padding: 0 15px;
}

/* Header & Navigation */
/* Navbar */
.navbar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 75px;
}

.navbar-brand a {
  color: var(--lighter);
  font-size: 1.6rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: all 0.3s ease;
  padding: 0.5rem 0;
}

.navbar-brand a:hover {
  transform: scale(1.05);
  color: var(--lighter);
}

.navbar-brand i {
  margin-right: 0.75rem;
  font-size: 2rem;
  color: var(--lighter);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* Mobile toggle */
.navbar-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 8px;
  transition: background-color 0.3s ease;
}

.navbar-toggle:hover {
  background-color: var(--transparent);
}

.navbar-toggle .bar {
  width: 28px;
  height: 3px;
  background-color: var(--lighter);
  margin: 4px 0;
  transition: 0.4s ease;
  border-radius: var(--radius-sm);
}

.navbar-toggle.is-active .bar:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

.navbar-toggle.is-active .bar:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.is-active .bar:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* Navigation menu */
.navbar-menu {
  display: flex;
}

.navbar-nav {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.25rem;
}

.nav-link {
  color: var(--lighter);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
  position: relative;
  white-space: nowrap;
  background: transparent;
}

.nav-table {
  padding: 0.75rem 1.25rem;
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  transition: all 0.3s ease;
  position: relative;
  white-space: nowrap;
  background-color: var(--primary-dark);
}
.nav-table:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.nav-table a:hover {
  color: var(--light);
}

.nav-link:hover {
  color: var(--lighter);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.nav-link.nav-register {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  margin-left: 0.75rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(25, 118, 210, 0.3);
}

.nav-link.nav-register:hover {
  background: linear-gradient(225deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(25, 118, 210, 0.4);
}

.nav-link i {
  margin-right: 0.6rem;
  font-size: 1rem;
}

/* Dropdown styles */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  cursor: pointer;
  position: relative;
}

.dropdown-toggle .fa-chevron-down {
  margin-left: 0.6rem;
  font-size: 0.8rem;
  transition: transform 0.3s ease;
}

.dropdown.is-active .dropdown-toggle .fa-chevron-down {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  background: var(--lighter);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-15px) scale(0.95);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 250px;
  z-index: 1001;
  border: 1px solid var(--transparent);
  backdrop-filter: blur(10px);
}

.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -8px;
  left: 20px;
  width: 16px;
  height: 16px;
  background: var(--lighter);
  transform: rotate(45deg);
  border-left: 1px solid var(--transparent);
  border-top: 1px solid var(--transparent);
}

.dropdown-menu-right {
  right: 0;
  left: auto;
}

.dropdown-menu-right::before {
  left: auto;
  right: 20px;
}

.dropdown.is-active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.dropdown-item {
  display: flex;
  align-items: center;
  color: var(--dark);
  padding: 1rem 1.25rem;
  text-decoration: none;
  transition: all 0.2s ease;
  border-radius: 0;
  font-weight: 500;
}

.dropdown-item:first-child {
  border-radius: 16px 16px 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 16px 16px;
}

.dropdown-item:hover {
  background: linear-gradient(90deg, var(--lighter), var(--light));
  color: var(--primary);
  transform: translateX(5px);
}

.dropdown-item i {
  margin-right: 1rem;
  width: 18px;
  color: var(--gray);
  font-size: 1rem;
  transition: color 0.2s ease;
}

.dropdown-item:hover i {
  color: var(--primary);
}

.dropdown-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, #e0e0e0, transparent);
  margin: 0.5rem 0;
}

/* User menu styles */
.user-menu .dropdown-toggle {
  background-color: var(--transparent);
  border-radius: 30px;
  padding: 0.6rem 1.25rem;
  border: 2px solid transparent;
  transition: all 0.3s ease;
}

.user-menu .dropdown-toggle:hover {
  background-color: var(--transparent);
  border-color: var(--transparent);
}

.user-menu .user-avatar i {
  font-size: 1.3rem;
  margin-right: 0.6rem;
  color: var(--primary-color)
}

/* Active state for navigation */
.nav-link.active {
  background-color: var(--transparent);
  color: var(--primary-color);
}

/* Responsive Design */
@media (max-width: 768px) {

  .no-phone{
  display: none;
}
  .navbar-toggle {
    display: flex;
  }
  
  .navbar-container {
    padding: 0 1rem;
    height: 70px;
  }
  
  .navbar-brand a {
    font-size: 1.4rem;
  }
  
  .navbar-brand i {
    font-size: 1.6rem;
  }
  
  .navbar-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
    width: 100%;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 30px var(--transparent);
    height: calc(100vh - 70px);
    overflow-y: auto;
  }
  
  .navbar-menu.is-active {
    left: 0;
  }
  
  .navbar-nav {
    flex-direction: column;
    padding: 2rem 0;
    width: 100%;
    gap: 0.5rem;
  }
  
  .nav-link {
    padding: 1.25rem 2rem;
    width: 90%;
    margin: 0 auto;
    justify-content: flex-start;
    border-radius: var(--radius-lg);
    font-size: 1.1rem;
  }
  
  .nav-link.nav-register {
    margin: 1rem auto;
    background: linear-gradient(45deg, var(--primary-dark), var(--primary));
    border-radius: var(--radius-lg);
    font-weight: 600;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: inset 0 0 15px var(--transparent);
    background: var(--lighter);
    margin: 0.5rem 2rem;
    border-radius: var(--radius-md);
    margin-top: 0.5rem;
    backdrop-filter: none;
  }
  
  .dropdown-menu::before {
    display: none;
  }
  
  .dropdown.is-active .dropdown-menu {
    display: block;
  }
  
  .dropdown-menu {
    display: none;
  }
  
  .dropdown-item {
    padding: 1rem 1.5rem;
    font-size: 1rem;
  }
  
  .user-menu .dropdown-toggle {
    background: var(--transparent);
    border-radius: var(--radius-md);
    width: 90%;
  }
}

/*Pantallas grandes*/
@media screen and (min-width: 1800px) {
  .editor-container{
  height: 720px;  
  overflow: hidden;
}
  
}

/* Cards */
.card {
  background-color: var(--lighter);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--lighter);
  font-weight: 600;
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--light);
  border-top: 1px solid var(--gray-light);
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  line-height: 1.5;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  cursor: pointer;
}

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

.btn-primary {
  background-color: var(--primary);
  color: var(--lighter);
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: var(--lighter);
}

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

.btn-secondary:hover {
  background-color: var(--secondary-dark);
  color: var(--lighter);
}

.btn-danger {
  background-color: var(--danger);
  color: var(--lighter);
}

.btn-danger:hover {
  background-color: #c0392b;
  color: var(--lighter);
}

.btn-warning {
  background-color: var(--warning);
  color: var(--lighter);
}

.btn-warning:hover {
  background-color: #d35400;
  color: var(--lighter);
}

.btn-success {
  background-color: var(--success);
  color: var(--lighter);
}

.btn-success:hover {
  background-color: var(--network-dark);
  color: var(--lighter);
}

.btn-outline {
  background-color: var(--darker);
  color: var(--lighter);
  border: 1px solid var(--primary);
}

.btn-outline:hover {
  background-color: var(--dark);
  color: var(--lighter);
}

.btn-dark {
  background-color: var(--darker);
  color: var(--lighter);
}

.btn-dark:hover{
  background-color: var(--dark);
  color: var(--lighter);
}
.btn-info {
  background-color: var(--light);
  color: var(--dark);
}
.btn-info:hover {
  background-color: var(--primary);
  color: var(--lighter);
}
.btn-transparent {
  background-color: var(--transparent);
  color: var(--darker);
  border: 1px solid var(--primary);
}
.btn-sm {
  padding: 0.25rem 0.5rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.25rem;
}

.btn-block {
  display: block;
  width: 100%;
}

.btn i {
  margin-right: var(--spacing-xs);
}

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

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

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--dark);
  background-color: var(--lighter);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
  border-color: var(--primary);
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.25);
}

select.form-control {
  height: calc(2.25rem + 2px);
}

textarea.form-control {
  height: auto;
  width: 100%;
  field-sizing: content;
}

.form-control-terminal {
  display: block;
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--dark);
  background-color: var(--lighter);
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control-terminal:focus {
  border-color: var(--secondary);
  outline: 0;
  box-shadow: 0 0 0 0.2rem rgba(52, 219, 122, 0.25);
}

/* Tables */
.table-container {
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
  background-color: var(--light);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--gray-light);
}

.table th {
  background-color: var(--primary-dark);
  color: var(--light);
  font-weight: 600;
}

.table tr:last-child td {
  border-bottom: none;
}

.table tr:hover {
  background-color: var(--lighter);
}

.table-striped tbody tr:nth-of-type(odd) {
  background-color: var(--transparent);
}

/* Alerts */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-md);
  border-left: 4px solid transparent;
}

.alert-success {
  background-color: #d4edda;
  border-color: var(--success);
  color: #155724;
}

.alert-danger {
  background-color: #f8d7da;
  border-color: var(--danger);
  color: #721c24;
}

.alert-warning {
  background-color: #fff3cd;
  border-color: var(--warning);
  color: #856404;
}

.alert-info {
  background-color: #d1ecf1;
  border-color: var(--primary);
  color: #0c5460;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25em 0.6em;
  font-size: 85%;
  font-weight: 700;
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: 10rem;
  color: var(--lighter);
}

.badge-primary {
  background-color: var(--primary);
}

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

.badge-success {
  background-color: var(--success);
}

.badge-danger {
  background-color: var(--danger);
}

.badge-warning {
  background-color: var(--warning);
}

.badge-info {
  background-color: var(--info);
}

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

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

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

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

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

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

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

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

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

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

.bg-primary {
  background-color: var(--primary);
  color: var(--lighter);
}

.bg-secondary {
  background: linear-gradient(135deg, var(--network) 0%, var(--network-dark) 100%);
  color: var(--lighter);
}

.bg-success {
  background-color: var(--success);
  color: var(--lighter);
}

.bg-danger {
  background-color: var(--danger);
  color: var(--lighter);
}

.bg-warning {
  background-color: var(--warning);
  color: var(--lighter);
}

.bg-light {
  background-color: var(--light);
  color: var(--dark);
}

.bg-dark {
  background-color: var(--dark);
  color: var(--lighter);
}

.bg-darker {
  background: linear-gradient(135deg, var(--coder) 0%, var(--coder-dark) 100%);
  color: var(--lighter);
}

.bg-info {
  background-color: var(--info);
  color: var(--lighter);
}
.mb-0 {
  margin-bottom: 0;
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

.mb-4 {
  margin-bottom: var(--spacing-xl);
}

.mt-0 {
  margin-top: 0;
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mt-4 {
  margin-top: var(--spacing-xl);
}

.p-0 {
  padding: 0;
}

.p-1 {
  padding: var(--spacing-sm);
}

.p-2 {
  padding: var(--spacing-md);
}

.p-3 {
  padding: var(--spacing-lg);
}

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

.d-flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.justify-content-between {
  justify-content: space-between;
}

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

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

.flex-wrap {
  flex-wrap: wrap;
}

.w-100 {
  width: 100%;
}

.h-100 {
  height: 100%;
}

/* Competition Specific Styles */
.problem-card {
  transition: transform 0.2s;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.problem-card .card-body {
  flex: 1;
}

.problem-card:hover {
  transform: translateY(-5px);
}

.problem-card.solved {
  border-left: 4px solid var(--success);
}

.problem-card.unsolved {
  border-left: 4px solid var(--gray);
}

.timer-display {
  background-color: var(--dark);
  color: var(--lighter);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.timer-display i {
  margin-right: var(--spacing-sm);
}

.competition-status {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
}

.competition-status.running {
  background-color: var(--success);
  color: var(--lighter);
}

.competition-status.stopped {
  background-color: var(--danger);
  color: var(--lighter);
}

.competition-status i {
  margin-right: var(--spacing-sm);
}

.ranking-table .position {
  font-weight: 700;
  text-align: center;
}

.ranking-table .top-1 {
  background-color: gold;
  color: var(--dark);
}

.ranking-table .top-2 {
  background-color: silver;
  color: var(--dark);
}

.ranking-table .top-3 {
  background-color: #cd7f32; /* bronze */
  color: var(--lighter);
}

.code-editor-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: var(--spacing-lg);
}

.code-editor-toolbar {
  background-color: var(--darker);
  color: var(--lighter);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.code-editor-toolbar select {
  background-color: var(--dark);
  color: var(--lighter);
  border: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}


/* Login Page */
.login-container {
  max-width: 400px;
  margin: 0 auto;
  
}

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

.login-form {
  background-color: var(--lighter);
  padding: var(--spacing-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

/* Dashboard Stats */
.stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  box-shadow: var(--shadow-md) ;
}

.stat-card {
  background-color: var(--light);
  padding: var(--spacing-md);
  text-align: center;
  transition: transform 0.2s;
}

.stat-card:hover {
  transform: translateY(0px);
}

.stat-card i {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  color: var(--primary);
}

.stat-card .stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.stat-card .stat-label {
  color: var(--gray);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Podium */
.podium-container {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  margin: var(--spacing-xl) 0;
  height: 300px;
}

.podium-place {
  text-align: center;
  padding: 0 var(--spacing-md);
}

.podium-place-1 .podium-block {
  height: 200px;
  background-color: gold;
}

.podium-place-2 .podium-block {
  height: 150px;
  background-color: silver;
}

.podium-place-3 .podium-block {
  height: 100px;
  background-color: #cd7f32; /* bronze */
}

.podium-block {
  width: 100%;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--dark);
  font-weight: 700;
  font-size: 2rem;
}

.podium-user {
  margin-top: var(--spacing-md);
  font-weight: 600;
}

.podium-score {
  font-size: 0.9rem;
  color: var(--gray);
}

/* Responsive */
@media (max-width: 768px) {
  * {
    font-size: 0.9rem;
  }
  
  .stats-container {
    grid-template-columns: 1fr;
  }
  
  .podium-container {
    flex-direction: column;
    height: auto;
    align-items: center;
  }
  
  .podium-place {
    margin-bottom: var(--spacing-lg);
  }
  
  .podium-block {
    height: 100px !important;
  }
  #editor-container {
    height: 300px; /* Reducir la altura */
  }

  .code-editor-toolbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .code-editor-toolbar select {
    margin-bottom: var(--spacing-sm);
  }
}

@media (max-width: 576px) {
  * {
    font-size: 0.8rem;
  }

  .container {
    width: 100%;
  }
  h1 {
    font-size: 1.5rem;
  }
  
  h2 {
    font-size: 1.25rem;
  }
  
  .card-body {
    padding: var(--spacing-md);
  }
  
  .table th,
  .table td {
    padding: var(--spacing-sm);
  }
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  color: var(--lighter);
  padding: 5rem 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://images.unsplash.com/photo-1555066931-4365d14bab8c?ixlib=rb-4.0.3');
  background-size: cover;
  background-position: center;
  opacity: 0.2;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
  animation: fadeInDown 1s ease-out;
}

.hero-subtitle {
  font-size: 1.5rem;
  margin-bottom: 2.5rem;
  opacity: 0.9;
  line-height: 1.6;
  animation: fadeInUp 1s ease-out 0.3s;
  animation-fill-mode: both;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  animation: fadeInUp 1s ease-out 0.6s;
  animation-fill-mode: both;
}

/* Buttons */
.btn {
  display: inline-block;
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  user-select: none;
  border: 1px solid transparent;
  /*padding: 0.8rem 1.5rem;*/
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 5px;
  transition: all 0.3s;
  cursor: pointer;
  text-decoration: none;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
}

.btn-primary {
  color: #fff;
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--secondary-color);
  border-color: var(--secondary-color);
  transform: translateY(-3px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Features Section */
.features-section {
  padding: 5rem 0;
  background-color: var(--lighter);
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.feature-card {
  background-color: var(--lighter);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  padding: 2.5rem;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  z-index: -1;
}

.feature-card:hover {
  transform: translateY(-15px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.feature-icon {
  font-size: 3.5rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
  transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 600;
  color: var(--darker);
}

.feature-description {
  color: #666;
  line-height: 1.7;
}

/* Info Section */
.info-section {
  padding: 5rem 0;
  background-color: #f5f7fa;
}

.info-container {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.info-image {
  flex: 1;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.info-image img {
  width: 100%;
  height: auto;
  display: block;
}

.info-content {
  flex: 1;
}

.info-title {
  font-size: 2.2rem;
  margin-bottom: 1.5rem;
  color: var(--darker);
}

.info-text {
  margin-bottom: 2rem;
  line-height: 1.7;
  color: #555;
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem 0;
}

.info-list li {
  padding-left: 1.8rem;
  position: relative;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.info-list li::before {
  content: '\f00c';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0.2rem;
  color: var(--primary-color);
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
  padding: 5rem 0;
  text-align: center;
  color: var(--lighter);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('https://images.unsplash.com/photo-1517694712202-14dd9538aa97?ixlib=rb-4.0.3');
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  z-index: 0;
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.8rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.cta-text {
  font-size: 1.2rem;
  margin-bottom: 2.5rem;
  opacity: 0.9;
}

/* Footer */
.footer {
  background-color: var(--darker);
  color: var(--lighter);
  padding: 4rem 0 2rem;
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 3rem;
}

.footer-logo {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-description {
  max-width: 300px;
  opacity: 0.8;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: rgba(255,255,255,0.1);
  color: var(--lighter);
  transition: all 0.3s;
}

.footer-social a:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

.footer-links-container {
  display: flex;
  gap: 4rem;
}

.footer-links-column h3 {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  position: relative;
  padding-bottom: 0.8rem;
}

.footer-links-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background-color: var(--primary-color);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-link {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: all 0.3s;
}

.footer-link:hover {
  color: var(--lighter);
  padding-left: 5px;
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  opacity: 0.7;
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Responsive */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.8rem;
  }
  
  .info-container {
    flex-direction: column;
  }
  
  .info-image, .info-content {
    flex: none;
    width: 100%;
  }
  
  .footer-content {
    flex-direction: column;
    gap: 2rem;
  }
  
  .footer-links-container {
    width: 100%;
    justify-content: space-between;
  }
}

@media (max-width: 768px) {
  *{
    font-size: 1rem;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  
  .hero-subtitle {
    font-size: 1.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .section-title {
    font-size: 2rem;
  }
  
  .footer-links-container {
    flex-direction: column;
    gap: 2rem;
  }
}

/* Estilos para la ventana emergente en solve_problem */
.popup {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5); /* Fondo semitransparente */
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1050;
}

.popup-content {
  background-color: var(--lighter);
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  width: 90%;
  max-width: 400px;
  text-align: center;
}

.popup-content h5 {
  margin-bottom: 15px;
}

.popup-actions {
  margin-top: 15px;
  display: flex;
  justify-content: space-between;
}