:root {
  --primary: #e28c45;
  --secondary: #eb1c1c;
  --dark: #121212;
  --darker: #0a0a0a;
  --light: #f5f5f5;
  --gray: #2d2d2d;
  --lighter-gray: #3d3d3d;
  --error: #ff4d4d;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans",
    "Helvetica Neue", sans-serif;
}

body {
  background-color: var(--dark);
  color: var(--light);
  line-height: 1.6;
  overflow-x: hidden;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  max-width: 100%;
  position: relative;
  padding-bottom: 70px;
}

.app-header {
  text-align: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--darker) 0%, var(--gray) 100%);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 10;
}

.app-header h1 {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.gradient-text {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: gradientShift 5s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.app-main {
  flex: 1;
  padding: 1rem;
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.converter-container {
  display: none;
  animation: fadeIn 0.3s ease-out;
  width: 100%;
}

.converter-container.active {
  display: block;
}


.input-group,
.result-group {
  margin-bottom: 1.5rem;
  width: 100%;
}

textarea {
  width: 100%;
  padding: 1rem;
  border-radius: 12px;
  border: none;
  background-color: var(--gray);
  color: var(--light);
  font-size: 1rem;
  resize: none;
  min-height: 120px;
  margin-bottom: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

textarea:focus {
  outline: none;
  box-shadow: 0 0 0 2px var(--primary);
  background-color: var(--lighter-gray);
}

button {
  border: none;
  border-radius: 12px;
  padding: 0.8rem 1.2rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

button:active {
  transform: scale(0.95);
}

.convert-btn {
  background: linear-gradient(135deg, var(--primary), #e2652b);
  color: white;
  width: 100%;
  margin-bottom: 1rem;
  box-shadow: 0 4px 15px rgba(226, 106, 69, 0.4);
}

.convert-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(226, 106, 69, 0.6);
}

.binary-options {
  display: flex;
  gap: 1rem;
  width: 100%;
}

.binary-options .convert-btn {
  flex: 1;
  margin-bottom: 0;
}

.action-buttons {
  display: flex;
  gap: 1rem;
  width: 100%;
}

.copy-btn,
.share-btn {
  flex: 1;
}

.copy-btn {
  background-color: var(--lighter-gray);
  color: var(--light);
}

.copy-btn:hover {
  background-color: #4d4d4d;
}

.share-btn {
  background-color: #3a5bd9;
  color: white;
}

.share-btn:hover {
  background-color: #2a4bc7;
}

.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--darker);
  display: flex;
  justify-content: space-around;
  padding: 0.7rem 0;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
  z-index: 100;
}

.nav-btn {
  background: transparent;
  color: var(--light);
  flex-direction: column;
  font-size: 0.8rem;
  padding: 0.5rem;
  border-radius: 8px;
  transition: all 0.3s ease;
  opacity: 0.7;
}

.nav-btn span {
  margin-top: 0.3rem;
  font-size: 0.7rem;
}

.nav-btn.active {
  opacity: 1;
  color: var(--primary);
  transform: translateY(-5px);
}

.nav-btn.active i {
  animation: bounce 0.5s;
}


/* Animación para el cambio de sección */
/* Elimina o comenta estas líneas */
@keyframes slideOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Y modifica el .converter-container para usar solo fadeIn */

/* Responsive adjustments */
@media (max-width: 480px) {
  .app-header h1 {
    font-size: 1.5rem;
  }

  textarea {
    min-height: 100px;
  }

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

/* Efecto de carga optimizado */
.skeleton {
  animation: skeleton-loading 1.5s infinite ease-in-out;
  background: linear-gradient(90deg, var(--gray), #3d3d3d, var(--gray));
  background-size: 200% 100%;
  border-radius: 8px;
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Menú para escritorio */
.desktop-nav {
    display: none;
    margin-top: 1.5rem;
}

.desktop-nav .nav-btn {
    background: transparent;
    color: var(--light);
    padding: 0.5rem 1.2rem;
    margin: 0 0.3rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.desktop-nav .nav-btn:hover {
    background-color: rgba(226, 113, 69, 0.2);
}

.desktop-nav .nav-btn.active {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(226, 113, 69, 0.4);
}

.desktop-nav .nav-btn i {
    margin-right: 0.5rem;
}

/* Menú para móvil */
.bottom-nav {
    display: flex;
}

/* Media queries para mostrar/ocultar según el dispositivo */
@media (min-width: 768px) {
    .bottom-nav {
        display: none;
    }
    
    .desktop-nav {
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
    }

    .desktop-nav > nav > * {
        padding: 25px;
    }
    
    .app-container {
        padding-bottom: 0;
    }
    header {
        margin-bottom: 25px;
    }
}

@media (max-width: 767px) {
    .desktop-nav {
        display: none;
    }
    
    .bottom-nav {
        display: flex;
    }
}