/* Estructura general: panel lateral + contenido */
.linear-layout {
    display: grid;
    grid-template-columns: 260px 1fr 1fr;
    gap: 20px;
    align-items: flex-start;
}

#main-lesson-container {
    grid-column: span 2;  /* Ocupa las dos últimas columnas */
    display: grid;
    grid-template-columns: 2fr 1fr; /* Dos columnas internas para teoría y ejemplo */
    gap: 20px; /* Espacio entre el panel de teoría y el panel de ejemplo */
    align-items: flex-start;
}

.lesson-theory {
    background: rgba(17,24,39,0.92); /* Fondo de tarjeta */
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px; /* Padding interno */
    box-shadow: 0 12px 34px var(--shadow);
    animation: fadeUp 0.8s ease forwards; /* Animación de entrada */
}

.lesson-theory h2 {
    margin: 0 0 10px;
    font-size: clamp(1.2rem, 2vw, 1.6rem);
    color: var(--accent);
}

.lesson-theory p {
    margin: 8px 0;
    color: #d1d5db;
}

.lesson-theory strong {
    color: #ffffff;
}

/* Código dentro de teoría */
.lesson-theory pre {
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
    border-radius: 8px;
    margin: 12px 0;
    overflow-x: auto;
    color: #93c5fd;
    font-family: Consolas, monospace;
}

/* === Contenido del Ejemplo === */
.lesson-example {
    background: rgba(17,24,39,0.92); /* Fondo de tarjeta */
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px; /* Padding interno */
    box-shadow: 0 12px 34px var(--shadow);
    display: flex;
    flex-direction: column; /* Para centrar el demo-box verticalmente */
    justify-content: center;
    align-items: center;
    min-height: 250px; /* Altura mínima para el ejemplo visual */
    animation: fadeUp 0.8s ease forwards; /* Animación de entrada */
}

/* Estilos para los demos dentro de lesson-example */
.lesson-example .demo-box {
    width: 100%;
    height: 180px; 
    border-radius: 10px;
    border: 1px solid var(--border);
    box-shadow: 0 6px 18px rgba(0,0,0,0.4);
}

/* === Menú lateral === */
.side-menu {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 10px 25px var(--shadow);
    height: fit-content;
    position: sticky;
    top: 24px;
    animation: fadeUp 0.8s ease forwards; 
}

.side-menu h3 {
    margin-top: 0;
    margin-bottom: 12px;
    color: var(--accent);
    text-align: center;
    font-size: 1.15rem;
    font-weight: 700;
}

.lesson-list {
    list-style: none; 
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.lesson-list li {
    padding: 10px 12px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.03);
    cursor: pointer;
    transition: all 0.25s ease;
    font-weight: 500;
    color: var(--text);
    border: 1px solid rgba(255,255,255,0.08);
    display: flex;
    align-items: center;
    gap: 8px; 
}

.lesson-list li:hover {
    background: rgba(56,189,248,0.15);
    border-color: var(--accent);
}

.lesson-list li.active {
    background: rgba(56,189,248,0.25);
    color: #dbeafe;
    border-color: var(--accent);
    font-weight: 600;
}

.hidden-lesson {
    display: none !important;
}

.lesson-content {
    display: block;
}

html {
    scroll-behavior: smooth;
}


/* Contenedor principal */
.Playground-section {
  width: 100%;
  max-width: 780px; 
  margin: 40px 465px; 
  padding: 32px 40px;
  background: rgba(17,24,39,0.95);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 10px 35px rgba(0,0,0,0.45);

  display: flex;
  flex-direction: column;
  align-items: left;
  text-align: center;
}

/* Texto del encabezado */
.Playground-section h2 {
  color: var(--accent);
  margin-bottom: 10px;
}

.Playground-section p {
  color: var(--muted);
  margin-bottom: 18px;
}

/* Controles */
.Playground-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 8px;
  margin-bottom: 18px;
}

.btn-play, .btn-reset {
  background: rgba(56,189,248,0.08);
  border: 1px solid var(--accent);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.25s ease;
}

.btn-play:hover, .btn-reset:hover {
  background: rgba(56,189,248,0.25);
  transform: translateY(-2px);
}

.Playground-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  align-items: stretch;
  margin-top: 20px;
}

#css-editor {
  width: 100%;
  min-height: 240px;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px;
  border-radius: 10px;
  resize: vertical;
  font-family: Consolas, monospace;
  font-size: 0.96rem;
  outline: none;
  box-shadow: 0 6px 18px rgba(0,0,0,0.3);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

#css-editor:focus {
  box-shadow: 0 0 18px rgba(56,189,248,0.6);
  transform: scale(1.01);
}

#preview-box {
  background: linear-gradient(to right, #ff6a00, #ffaa00);
  border-radius: 12px;
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px var(--shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#preview-box:hover {
  transform: scale(1.03);
  box-shadow: 0 15px 35px rgba(0,0,0,0.55);
}

/* Pequeña animación de realce */
#preview-box.highlight {
  animation: previewPop 0.5s ease;
}

/* 
APLICACIONES DEL GRADIENTE LINEAL
*/
.aplicaciones-section {
  margin-top: 70px;
}

.aplicaciones-section h2 {
  color: var(--accent);
  text-align: center;
  margin-bottom: 12px;
}

.aplicaciones-section p {
  color: var(--muted);
  text-align: center;
  margin-bottom: 30px;
}

.aplicaciones-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 26px;
  margin-top: 20px;
}

.demo-card {
  background: rgba(17,24,39,0.9);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  text-align: center;
  box-shadow: 0 8px 25px rgba(0,0,0,0.45);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.demo-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 35px rgba(0,0,0,0.55);
}

.demo-card h3 {
  color: var(--accent);
  margin-bottom: 8px;
}

.demo-box {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  margin-top: 12px;
  height: 160px;
  border: 1px solid var(--border);
  box-shadow: 0 6px 18px rgba(0,0,0,0.35);
}

/* Fondo dinámico */
#demo-fondo {
  background: linear-gradient(120deg, #ff512f, #ff0080, #38bdf8, #00ffff);
  background-size: 400% 400%;
  animation: gradientShift 6s ease-in-out infinite;
}

/* Imagen con overlay */
.image-wrapper {
  position: relative;
}

.image-wrapper img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  display: block;
}

.image-wrapper .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), rgba(56,189,248,0.2));
  transition: all 0.4s ease;
}

.image-wrapper:hover .overlay {
  background: linear-gradient(to top, rgba(56,189,248,0.5), rgba(0,0,0,0.2));
}

/* Botón interactivo */
#btn-gradiente {
  background: linear-gradient(90deg, #ff6a00, #ffaa00);
  border: none;
  padding: 12px 24px;
  color: white;
  font-weight: 600;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(255,147,23,0.4);
  transition: background 0.4s ease, transform 0.2s ease, box-shadow 0.3s ease;
}

#btn-gradiente:hover {
  background: linear-gradient(90deg, #ffaa00, #ff6a00);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,147,23,0.6);
}

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

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

/* responsive */
@media (max-width: 1200px) {
    .linear-layout {
        grid-template-columns: 260px 1fr; 
    }
    #main-lesson-container {
        grid-column: span 1;
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .lesson-example {
        min-height: 150px;
    }
}

@media (max-width: 900px) {
    .linear-layout {
        grid-template-columns: 1fr;
    }
    .side-menu {
        position: relative;
        top: 0;
        width: 100%;
    }
    #main-lesson-container {
        grid-template-columns: 1fr;
    }
    
    .Playground-grid {
        grid-template-columns: 1fr;
    }
    
    .Playground-section {
        margin: 40px auto;
        padding: 20px;
    }
}



/* === estilos  === */
.concept-box {
    background: rgba(56, 189, 248, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 15px 0;
    border-radius: 0 8px 8px 0;
}

.concept-box h4 {
    margin-top: 0;
    color: var(--accent);
}

.concept-box ul {
    margin: 10px 0;
    padding-left: 20px;
}

.concept-box li {
    margin: 8px 0;
    color: var(--text);
}

.syntax-breakdown {
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.syntax-breakdown h4 {
    color: var(--accent);
    margin-top: 0;
}

.explanation {
    background: rgba(129, 140, 248, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.tip-box {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.tip-box h4 {
    color: #ffc107;
    margin-top: 0;
}

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

.demo-container h4 {
    color: var(--accent);
    margin: 20px 0 10px 0;
}

.demo-caption {
    font-size: 0.9rem;
    color: var(--muted);
    margin: 5px 0 15px 0;
}


/* === estilos par la estructura === */

.lesson-content {
    grid-column: 1 / -1; /* Ocupa todo el ancho disponible */
}

.theory-block {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.theory-block:last-of-type {
    border-bottom: none;
}

.example-block {
    background: rgba(56, 189, 248, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin: 25px 0;
    border-left: 4px solid var(--accent);
}

/* Demo de comparación */
.demo-comparison {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 20px;
    margin: 20px 0;
}

.demo-item {
    text-align: center;
    flex: 1;
}

.demo-item p {
    margin-top: 10px;
    font-size: 0.9rem;
    color: var(--muted);
}

.solid-demo {
    border: 2px dashed var(--border);
}

/* Sintaxis con demo */
.syntax-demo {
    text-align: center;
}

.code-example {
    background: rgba(0,0,0,0.3);
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
}

.demo-result {
    margin: 20px 0;
}

.demo-explanation {
    color: var(--muted);
    font-style: italic;
}

/* Grid de direcciones */
.direction-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 15px;
}

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

.direction-item p {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--muted);
}

/* Paso a paso */
.step-by-step {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 20px 0;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    background: rgba(255,255,255,0.03);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.step-number {
    background: var(--accent);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h4 {
    margin: 0 0 8px 0;
    color: var(--accent);
}

.step-content p {
    margin: 0;
    color: var(--muted);
}

/* Breakdown de código */
.code-breakdown {
    background: rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
}

.breakdown-items {
    margin-top: 15px;
}

.breakdown-item {
    display: flex;
    margin: 10px 0;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.part-name {
    font-weight: bold;
    color: var(--accent);
    min-width: 120px;
}

.part-desc {
    color: var(--text);
}

/* Reglas y consejos */
.rules-box {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.3);
    padding: 20px;
    border-radius: 8px;
}

.rules-box h4 {
    color: #ffc107;
    margin-top: 0;
}

.rules-box ul {
    margin: 15px 0;
    padding-left: 20px;
}

.rules-box li {
    margin: 8px 0;
    color: var(--text);
}


/* === estilos de contenido === */

/* Grid de etiquetas HTML */
.tags-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin: 15px 0;
}

.tag-item {
    background: rgba(255,255,255,0.05);
    padding: 8px 12px;
    border-radius: 6px;
    font-family: monospace;
}

.tag-item code {
    color: var(--accent);
    font-weight: bold;
}

/* Lista de propiedades */
.properties-list ul {
    columns: 2;
    margin: 15px 0;
}

.properties-list li {
    margin: 8px 0;
    font-family: monospace;
    color: var(--accent);
}

/* Panel de código real */
.real-code-example {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
    align-items: start;
}

.code-panel {
    background: #1e1e1e;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

.code-header {
    background: #2d2d2d;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid #444;
}

.code-filename {
    color: #ccc;
    font-weight: bold;
}

.code-language {
    color: var(--accent);
    font-size: 0.8rem;
}

.code-content {
    padding: 20px;
    margin: 0;
    background: #1e1e1e;
    color: #d4d4d4;
    font-size: 0.9rem;
    line-height: 1.4;
}

.code-content code {
    background: none;
    padding: 0;
}

/* Botón demo real */
.boton-moderno-demo {
    padding: 12px 24px;
    font-size: 16px;
    font-weight: bold;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 15px 0;
}

.boton-moderno-demo:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.demo-notes {
    font-size: 0.8rem;
    color: var(--muted);
    font-style: italic;
}

/* Explicación de grados */
.angle-explanation {
    margin: 20px 0;
}

.angle-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.angle-system h5 {
    color: var(--accent);
    margin-bottom: 10px;
}

.angle-system ul {
    margin: 0;
    padding-left: 20px;
}

.angle-system li {
    margin: 5px 0;
    font-family: monospace;
}

/* Círculo de grados */
.degree-circle {
    position: relative;
    width: 200px;
    height: 200px;
    border: 2px solid var(--accent);
    border-radius: 50%;
    margin: 20px auto;
    background: rgba(56, 189, 248, 0.1);
}

.degree-item {
    position: absolute;
    background: var(--panel);
    padding: 5px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

.degree-item.top { top: 10px; left: 50%; transform: translateX(-50%); }
.degree-item.right { top: 50%; right: 10px; transform: translateY(-50%); }
.degree-item.bottom { bottom: 10px; left: 50%; transform: translateX(-50%); }
.degree.item.left { top: 50%; left: 10px; transform: translateY(-50%); }
.degree-item.ne { top: 25%; right: 25%; }
.degree-item.se { bottom: 25%; right: 25%; }
.degree-item.sw { bottom: 25%; left: 25%; }
.degree-item.nw { top: 25%; left: 25%; }

.conversion-tip {
    background: rgba(255, 193, 7, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin-top: 20px;
}

/* Demo de grados */
.degrees-demo {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin: 20px 0;
}

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

.degree-example p {
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--muted);
}

.code-comparison {
    margin-top: 25px;
}

/* === Syntax hightlightting === */

.code-panel.small {
    font-size: 0.85rem;
}

/* Colores para syntax highlighting */
.css-property {
    color: #9cdcfe; /* Azul claro para propiedades */
}

.css-function {
    color: #dcdcaa; /* Amarillo para funciones */
}

.css-value {
    color: #ce9178; /* Naranja para valores */
}

.css-color {
    color: #ff6b6b; /* Rojo para nombres de color */
}

.css-hex {
    color: #a5d6ff; /* Azul pastel para hexadecimal */
}

.css-rgb {
    color: #c792ea; /* Morado para RGB */
}

.css-hsl {
    color: #89ddff; /* Azul claro para HSL */
}

/* Grid para formatos de color */
.color-formats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 20px 0;
}

.format-item {
    background: rgba(255,255,255,0.03);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255,255,255,0.1);
}

.format-item h5 {
    margin-top: 0;
    color: var(--accent);
    font-size: 0.95rem;
}

.format-desc {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 8px 0 0 0;
}

/* Mejorar la explicación del demo */
.demo-explanation {
    background: rgba(56, 189, 248, 0.1);
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
    font-size: 0.9rem;
}

/* Estilos para bloques de código pequeños */
.code-panel.small .code-content {
    padding: 12px;
    font-size: 0.85rem;
}

.code-panel.small .code-header {
    padding: 8px 12px;
    font-size: 0.8rem;
}


.step-details {
    background: rgba(255,255,255,0.05);
    padding: 10px;
    border-radius: 6px;
    margin-top: 8px;
}

.step-details p {
    margin: 0 0 5px 0;
    font-size: 0.85rem;
}

.step-details ul {
    margin: 0;
    padding-left: 20px;
    font-size: 0.8rem;
}

.step-details li {
    margin: 3px 0;
}



.css-comment {
    color: #6a9955; /* Verde para comentarios */
    font-style: italic;
}

.css-selector {
    color: #d7ba7d; /* Amarillo dorado para selectores */
}

.css-property {
    color: #9cdcfe; /* Azul claro para propiedades */
}

.css-value {
    color: #ce9178; /* Naranja para valores como 'bold', 'none' */
}

.css-function {
    color: #dcdcaa; /* Amarillo para funciones */
}

.css-number {
    color: #b5cea8; /* Verde claro para números */
}

.css-hex {
    color: #c586c0; /* Morado para códigos hexadecimales */
}

/* Panel de código mejorado */
.code-panel {
    background: #1e1e1e;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
    border: 1px solid #444;
}

.code-header {
    background: #2d2d2d;
    padding: 12px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #444;
    font-family: var(--sans);
}

.code-filename {
    color: #cccccc;
    font-weight: 600;
    font-size: 0.9rem;
}

.code-language {
    color: var(--accent);
    font-size: 0.8rem;
    background: rgba(56, 189, 248, 0.2);
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 600;
}

.code-content {
    padding: 25px;
    margin: 0;
    background: #1e1e1e;
    color: #d4d4d4;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    overflow-x: auto;
    max-height: 400px;
    overflow-y: auto;
}

.code-content code {
    background: none;
    padding: 0;
    font-family: inherit;
}

/* Breakdown del código */
.code-breakdown-mini {
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    border-left: 3px solid var(--accent);
}

.code-breakdown-mini h6 {
    margin: 0 0 10px 0;
    color: var(--accent);
    font-size: 0.9rem;
}

.code-breakdown-mini ul {
    margin: 0;
    padding-left: 20px;
}

.code-breakdown-mini li {
    margin: 6px 0;
    font-size: 0.85rem;
    color: var(--text);
}

.code-highlight {
    background: rgba(56, 189, 248, 0.2);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--accent);
    font-weight: 600;
}

/* Botón demo mejorado */
.boton-moderno-demo {
    padding: 14px 28px;
    font-size: 16px;
    font-weight: bold;
    color: white;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    transition: all 0.4s ease;
    margin: 20px 0;
    font-family: var(--sans);
    position: relative;
    overflow: hidden;
}

.boton-moderno-demo:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.6);
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.boton-moderno-demo:active {
    transform: translateY(-1px) scale(1.02);
}

.demo-notes {
    font-size: 0.85rem;
    color: var(--muted);
    font-style: italic;
    text-align: center;
    margin: 10px 0;
}

/* === diseño del paso a paso === */

.journey-intro {
    display: flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(129, 140, 248, 0.1));
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
    border-left: 4px solid var(--accent);
}

.journey-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.journey-intro p {
    margin: 0;
    color: var(--text);
    font-size: 1rem;
}

/* Contenedor principal de pasos */
.step-by-step-enhanced {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin: 30px 0;
    position: relative;
}

/* Tarjetas de paso */
.step-card {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 0;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    position: relative;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(56, 189, 248, 0.3);
}

.step-card.final-step {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(56, 189, 248, 0.1));
    border: 2px solid rgba(56, 189, 248, 0.3);
}

/* Header de cada paso */
.step-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 25px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.step-number {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.4);
}

.step-line {
    width: 2px;
    height: 30px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    border-radius: 1px;
}

.step-line.final {
    background: linear-gradient(to bottom, var(--accent), rgba(56, 189, 248, 0.3));
}

.step-title {
    flex: 1;
}

.step-title h4 {
    margin: 0 0 5px 0;
    color: var(--accent);
    font-size: 1.2rem;
}

.step-tag {
    background: rgba(56, 189, 248, 0.2);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Contenido del paso */
.step-content {
    padding: 25px;
}

.step-explanation p {
    margin: 0 0 15px 0;
    color: var(--text);
    line-height: 1.6;
}

.step-tip {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: rgba(255, 193, 7, 0.1);
    padding: 12px 15px;
    border-radius: 8px;
    border-left: 3px solid #ffc107;
}

.tip-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.step-tip span {
    color: var(--text);
    font-size: 0.9rem;
}

/* Opciones de dirección */
.direction-options {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.direction-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mini-demo {
    width: 80px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.direction-option span {
    font-size: 0.8rem;
    color: var(--muted);
}

/* Formatos de color */
.color-formats-mini {
    margin-top: 20px;
}

.color-formats-mini h5 {
    margin: 0 0 12px 0;
    color: var(--accent);
    font-size: 0.95rem;
}

.formats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.format-option {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.format-option:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.format-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
}

.format-option code {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 600;
}

.format-option span {
    font-size: 0.75rem;
    color: var(--muted);
    margin-left: auto;
}

/* Resultado final */
.final-result {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(129, 140, 248, 0.1));
    padding: 20px;
    border-radius: 12px;
    margin-top: 20px;
    text-align: center;
    border: 1px solid rgba(56, 189, 248, 0.2);
}

.final-result h5 {
    margin: 0 0 15px 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.demo-box-final {
    height: 80px;
    border-radius: 10px;
    margin: 0 auto 15px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.success-message {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.95rem;
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .journey-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .formats-grid {
        grid-template-columns: 1fr;
    }
    
    .direction-options {
        flex-direction: column;
        align-items: center;
    }
}

/* === diseño aplicaciones === */

.application-intro {
    display: flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, rgba(129, 140, 248, 0.1), rgba(56, 189, 248, 0.1));
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
    border-left: 4px solid var(--accent-2);
}

.app-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.application-intro p {
    margin: 0;
    color: var(--text);
    font-size: 1rem;
}

/* Grid principal de aplicaciones */
.application-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 30px 0;
}

.app-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.app-header {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.app-header h4 {
    margin: 0 0 8px 0;
    color: var(--accent);
    font-size: 1.3rem;
}

.app-header p {
    margin: 0;
    color: var(--muted);
    font-size: 0.95rem;
}

/* Grid de etiquetas mejorado */
.tags-grid-enhanced {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.tag-card {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(17, 24, 39, 0.8);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tag-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    border-color: rgba(56, 189, 248, 0.3);
}

.tag-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.tag-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    width: 40px;
    text-align: center;
}

.tag-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tag-content code {
    color: var(--accent);
    font-weight: bold;
    font-size: 0.95rem;
    font-family: 'Consolas', monospace;
}

.tag-content span {
    color: var(--muted);
    font-size: 0.85rem;
}

.tag-demo {
    width: 60px;
    height: 40px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.tag-card:hover .tag-demo {
    transform: scale(1.1);
}

/* Grid de propiedades */
.properties-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.property-card {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
}

.property-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.property-card.primary {
    border: 2px solid rgba(56, 189, 248, 0.3);
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.9), rgba(56, 189, 248, 0.1));
}

.property-card.primary::before {
    content: '⭐ RECOMENDADO';
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--accent);
    color: white;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: bold;
    z-index: 2;
}

.property-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.property-header h5 {
    margin: 0;
    color: var(--accent);
    font-size: 1.1rem;
    font-family: 'Consolas', monospace;
}

.property-badge {
    background: rgba(56, 189, 248, 0.2);
    color: var(--accent);
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.property-content {
    padding: 20px;
}

.property-content p {
    margin: 0 0 15px 0;
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Panel de código micro */
.code-panel.micro {
    font-size: 0.75rem;
}

.code-panel.micro .code-content {
    padding: 12px;
    font-size: 0.75rem;
}

.code-panel.micro .code-header {
    padding: 8px 12px;
    font-size: 0.7rem;
}

/* Tip de uso */
.usage-tip {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 193, 7, 0.05));
    border: 1px solid rgba(255, 193, 7, 0.2);
    border-radius: 12px;
    padding: 20px;
    margin-top: 25px;
}

.tip-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.tip-header h5 {
    margin: 0;
    color: #ffc107;
    font-size: 1.1rem;
}

.tip-icon {
    font-size: 1.3rem;
}

.usage-tip p {
    margin: 0;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.5;
}

.usage-tip code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 1100px) {
    .application-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
}

@media (max-width: 768px) {
    .application-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .tag-card {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .property-header {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

/* === diseño formato de color vertical === */

.formats-intro {
    display: flex;
    align-items: center;
    gap: 15px;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(78, 205, 196, 0.1));
    padding: 20px;
    border-radius: 12px;
    margin: 25px 0;
    border-left: 4px solid #ff6b6b;
}

.formats-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.formats-intro p {
    margin: 0;
    color: var(--text);
    font-size: 1rem;
}

/* Lista vertical de formatos */
.color-formats-vertical {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 30px 0;
}

.format-item-vertical {
    background: rgba(17, 24, 39, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    position: relative;
}

.format-item-vertical:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
    border-color: rgba(255, 255, 255, 0.2);
}

.format-item-vertical::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
}

/* Header del formato */
.format-header {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 25px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.format-icon {
    font-size: 1.8rem;
    flex-shrink: 0;
    width: 50px;
    text-align: center;
}

.format-title {
    flex: 1;
}

.format-title h4 {
    margin: 0 0 5px 0;
    color: var(--accent);
    font-size: 1.3rem;
}

.format-subtitle {
    color: var(--muted);
    font-size: 0.9rem;
}

.format-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.format-badge.beginner {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.format-badge.popular {
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
    border: 1px solid rgba(255, 193, 7, 0.3);
}

.format-badge.versatile {
    background: rgba(33, 150, 243, 0.2);
    color: #2196f3;
    border: 1px solid rgba(33, 150, 243, 0.3);
}

.format-badge.modern {
    background: rgba(156, 39, 176, 0.2);
    color: #9c27b0;
    border: 1px solid rgba(156, 39, 176, 0.3);
}

/* Contenido del formato */
.format-content {
    padding: 25px;
}

.format-details {
    margin-top: 20px;
}

.format-details p {
    margin: 0 0 15px 0;
    color: var(--text);
    line-height: 1.6;
}

/* Muestras de color */
.color-samples {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}

.color-sample {
    width: 30px;
    height: 30px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: transform 0.2s ease;
}

.color-sample:hover {
    transform: scale(1.2);
}

.color-sample-more {
    background: rgba(255, 255, 255, 0.1);
    color: var(--muted);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Breakdown de formatos */
.hex-breakdown,
.rgb-breakdown,
.hsl-breakdown {
    margin: 15px 0;
    padding-left: 20px;
}

.hex-breakdown li,
.rgb-breakdown li,
.hsl-breakdown li {
    margin: 8px 0;
    color: var(--text);
    font-size: 0.9rem;
}

.hex-breakdown code,
.rgb-breakdown code,
.hsl-breakdown code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 600;
}

/* Demo del formato */
.format-demo {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.format-demo .demo-box {
    width: 120px;
    height: 60px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    flex-shrink: 0;
}

.demo-label {
    color: var(--muted);
    font-size: 0.85rem;
    font-family: 'Consolas', monospace;
}

/* Recomendaciones */
.format-recommendations {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.1), rgba(129, 140, 248, 0.1));
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 16px;
    padding: 25px;
    margin-top: 30px;
}

.recommendation-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.rec-icon {
    font-size: 1.5rem;
}

.recommendation-header h4 {
    margin: 0;
    color: var(--accent);
    font-size: 1.3rem;
}

.recommendation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.rec-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.rec-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.08);
}

.rec-card h5 {
    margin: 0 0 10px 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.rec-card p {
    margin: 0;
    color: var(--text);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Responsive */
@media (max-width: 768px) {
    .formats-intro {
        flex-direction: column;
        text-align: center;
    }
    
    .format-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .recommendation-grid {
        grid-template-columns: 1fr;
    }
    
    .format-demo {
        flex-direction: column;
        text-align: center;
    }
    
    .format-demo .demo-box {
        width: 100%;
        max-width: 200px;
    }
}

/* === estilos seccion 2 === */

/* Grid de opciones de dirección */
.direction-options-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin: 20px 0;
}

.direction-option-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    padding: 15px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.direction-option-card:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
}

.direction-option-card .mini-demo {
    width: 100%;
    height: 60px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.direction-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.direction-info code {
    color: var(--accent);
    font-weight: bold;
    font-size: 0.9rem;
}

.direction-info span {
    color: var(--muted);
    font-size: 0.8rem;
}

/* Controles de demo mejorados */
.demo-controls {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 20px 0;
}

.btn-direction {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-direction:hover {
    background: rgba(56, 189, 248, 0.1);
    border-color: var(--accent);
}

.btn-direction.active {
    background: rgba(56, 189, 248, 0.2);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.btn-icon {
    font-size: 1.1rem;
}

/* Demo result mejorado */
.demo-result-enhanced {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
    align-items: start;
}

.demo-visual {
    display: flex;
    flex-direction: column;
    gap: 15px;
    align-items: center;
}

.demo-box-large {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    position: relative;
    transition: all 0.3s ease;
}

/* Sistema de ángulos */
.angle-explanation-enhanced {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 25px 0;
}

.angle-system-card {
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 12px;
    padding: 20px;
}

.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.system-header h5 {
    margin: 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.system-badge {
    background: rgba(56, 189, 248, 0.3);
    color: var(--accent);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.system-content ul {
    margin: 0;
    padding-left: 20px;
}

.system-content li {
    margin: 8px 0;
    color: var(--text);
    font-size: 0.9rem;
}

.system-content code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 600;
}

/* Visualización de ángulos */
.angle-visualization {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
}

.angle-visualization h5 {
    margin: 0 0 15px 0;
    color: var(--accent);
    text-align: center;
}

.degrees-demo-enhanced {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.degree-example-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.03);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.degree-example-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.06);
}

.degree-demo {
    width: 100%;
    height: 60px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.degree-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.degree-info code {
    color: var(--accent);
    font-weight: bold;
    font-size: 0.85rem;
}

.degree-info span {
    color: var(--muted);
    font-size: 0.75rem;
    text-align: center;
}

/* Grid de comparación */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 20px 0;
}

.comparison-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

.comparison-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.comparison-header h5 {
    margin: 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.comparison-badge {
    background: rgba(129, 140, 248, 0.2);
    color: var(--accent-2);
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.comparison-demo {
    margin: 15px 0;
}

.comparison-demo .demo-box {
    height: 80px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.comparison-desc p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text);
}

/* Controles de animación */
.animation-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
    flex-wrap: wrap;
}

.btn-play, .btn-reset {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid var(--accent);
    color: var(--text);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-reset.secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-play:hover, .btn-reset:hover {
    background: rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

.btn-reset.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Demo de animación */
.animation-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
    align-items: start;
}

.angle-indicator {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 5px 10px;
    border-radius: 6px;
    font-family: 'Consolas', monospace;
    font-weight: bold;
    font-size: 0.9rem;
}

/* Grid de resumen */
.summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 15px;
}

.summary-column h5 {
    margin: 0 0 12px 0;
    color: var(--accent);
    font-size: 1rem;
}

.summary-column ul {
    margin: 0;
    padding-left: 20px;
}

.summary-column li {
    margin: 8px 0;
    color: var(--text);
    font-size: 0.9rem;
}

.summary-column code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 600;
}

/* === estilos codigo en tiempo real === */

.code-update-highlight {
    animation: codePulse 0.3s ease-in-out;
    background: rgba(56, 189, 248, 0.3) !important;
    border-radius: 3px;
    padding: 2px 4px;
    position: relative;
}

@keyframes codePulse {
    0% {
        background: rgba(56, 189, 248, 0.1);
        transform: scale(1);
    }
    50% {
        background: rgba(56, 189, 248, 0.5);
        transform: scale(1.05);
    }
    100% {
        background: rgba(56, 189, 248, 0.3);
        transform: scale(1);
    }
}

/* Efecto de parpadeo suave para indicar actualización */
.code-update-highlight::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(56, 189, 248, 0.2);
    border-radius: 3px;
    animation: fadeBlink 0.6s ease-in-out;
}

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

#rotation-code {
    position: relative;
    transition: all 0.3s ease;
}

.code-updating {
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.3);
}

/* Indicador de estado de la animación */
.animation-status {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 600;
    display: none;
}

.animation-status.active {
    display: block;
    animation: statusPulse 2s infinite;
}

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


/* === estilos para selectores de color === */
.color-picker-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.color-picker-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.color-picker-group label {
    color: var(--text);
    font-weight: 600;
    font-size: 0.95rem;
}

.color-input {
    width: 100%;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.1);
}

.color-value {
    color: var(--accent);
    font-family: 'Consolas', monospace;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 10px;
    border-radius: 6px;
}

/* Control de velocidad */
.animation-speed-control {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

#speed-range {
    flex: 1;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    height: 6px;
}

#speed-value {
    color: var(--accent);
    font-weight: 600;
    min-width: 50px;
    text-align: center;
}

/* Efecto de highlight para código */
.code-update-highlight {
    animation: codePulse 0.3s ease-in-out;
    background: rgba(56, 189, 248, 0.3) !important;
    border-radius: 3px;
    padding: 2px 4px;
}

@keyframes codePulse {
    0%, 100% { 
        background: rgba(56, 189, 248, 0.1);
        transform: scale(1);
    }
    50% { 
        background: rgba(56, 189, 248, 0.5);
        transform: scale(1.05);
    }
}

/* Botones de control */
.animation-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 20px 0;
    flex-wrap: wrap;
    align-items: center;
}

.btn-play, .btn-reset {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid var(--accent);
    color: var(--text);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-reset.secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-play:hover, .btn-reset:hover {
    background: rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

.animation-speed-control {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px 15px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* === Estilos seccion 3  === */

/* Controles de colores múltiples */
.multi-color-controls {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin: 25px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.color-stops-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
}

.color-stop {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: rgba(17, 24, 39, 0.8);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.color-stop:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}

.color-preview {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
}

.color-stop-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.stop-position {
    display: flex;
    align-items: center;
    gap: 8px;
}

.stop-position input {
    width: 80px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    padding: 8px;
    color: var(--text);
    text-align: center;
}

.stop-position span {
    color: var(--muted);
    font-size: 0.9rem;
}

.color-value-display {
    font-family: 'Consolas', monospace;
    color: var(--accent);
    font-weight: 600;
    min-width: 100px;
    text-align: center;
}

.remove-stop {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-stop:hover {
    background: rgba(239, 68, 68, 0.3);
    transform: scale(1.05);
}

.color-controls-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

/* Gradientes predefinidos */
.preset-gradients {
    text-align: center;
}

.preset-gradients h5 {
    margin: 0 0 15px 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.preset-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.preset-btn {
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--text);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.preset-btn:hover {
    background: rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

/* Demo de múltiples colores */
.multi-color-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
    align-items: start;
}

#multi-color-demo-box {
    position: relative;
    overflow: hidden;
}

.color-stops-overlay {
    position: absolute;
    bottom: 10px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
}

.stop-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.marker-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid white;
    background: currentColor;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.marker-label {
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.8);
    background: rgba(0, 0, 0, 0.7);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Ejemplos del mundo real */
.real-examples {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.example-card {
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modern-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    cursor: pointer;
    margin-bottom: 10px;
    transition: transform 0.3s ease;
}

.modern-btn:hover {
    transform: translateY(-2px);
}

.app-background {
    height: 80px;
    border-radius: 8px;
    margin-bottom: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Mejores prácticas */
.best-practices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.practice-card {
    padding: 20px;
    border-radius: 12px;
    border: 1px solid;
}

.practice-card.good {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
}

.practice-card.bad {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
}

.practice-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.practice-header h5 {
    margin: 0;
    color: var(--text);
    font-size: 1.1rem;
}

.practice-icon {
    font-size: 1.3rem;
}

.practice-card ul {
    margin: 0;
    padding-left: 20px;
}

.practice-card li {
    margin: 8px 0;
    color: var(--text);
    font-size: 0.9rem;
}

/* === estilos seccion 4 === */

.practice-container {
    margin: 30px 0;
}

.practice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: stretch;
}

.practice-panel {
    background: rgba(17, 24, 39, 0.95);
    border: 1px solid var(--border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* Panel de código */
.code-panel.practice-panel .code-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.css-editor {
    width: 100%;
    height: 300px;
    background: #1e1e1e;
    border: none;
    color: #d4d4d4;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    padding: 20px;
    resize: vertical;
    outline: none;
}

.css-editor:focus {
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.3);
}

.editor-actions {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hint-box {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-size: 0.85rem;
}

.hint-icon {
    font-size: 1rem;
}

/* Panel de preview */
.preview-panel {
    display: flex;
    flex-direction: column;
}

.preview-header {
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.preview-header h4 {
    margin: 0 0 5px 0;
    color: var(--accent);
    font-size: 1.2rem;
}

.preview-subtitle {
    color: var(--muted);
    font-size: 0.9rem;
}

.preview-content {
    flex: 1;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}

.preview-container {
    width: 100%;
    height: 100%;
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.preview-container:hover {
    border-color: rgba(56, 189, 248, 0.5);
}

.mi-gradiente {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.preview-info {
    padding: 15px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-around;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.info-label {
    color: var(--muted);
    font-size: 0.85rem;
}

.info-item code {
    color: var(--accent);
    font-weight: 600;
}

/* Grid de ejemplos */
.examples-grid {
    display: grid;
    flex-direction: column;
    gap: 20px;
    margin: 25px 0;
}

.example-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: auto;
    min-height: 180px;
}

.example-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
}

.example-card h5 {
    margin: 0 0 15px 0;
    color: var(--accent);
    font-size: 1rem;
    line-height: 1.3;
    min-height: 2.6em;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Panel de código dentro de ejemplo */
.example-card .code-panel.small {
    flex: 1;
    margin: 0 0 15px 0;
    min-height: 80px;
    display: flex;
    flex-direction: column;
}

.example-card .code-panel.small .code-content {
    flex: 1;
    padding: 12px;
    font-size: 0.8rem;
    line-height: 1.3;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.example-card .code-panel.small pre {
    margin: 0;
    white-space: pre-wrap;
    word-wrap: break-word;
    width: 100%;
}

.example-card .code-panel.small code {
    font-size: 0.75rem;
    line-height: 1.3;
    word-break: break-all;
    overflow-wrap: break-word;
}

/* Botón de ejemplo */
.example-btn {
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid var(--accent);
    color: var(--text);
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.example-btn:hover {
    background: rgba(56, 189, 248, 0.2);
    transform: translateY(-2px);
}

/* Responsive mejorado */
@media (max-width: 1100px) {
    .practice-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .example-card {
        min-height: 160px;
    }
}

@media (max-width: 768px) {
    .editor-actions {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .preview-info {
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }
    
    .css-editor {
        height: 250px;
        font-size: 0.9rem;
    }
    
    .example-card {
        min-height: 140px;
        padding: 15px;
    }
    
    .example-card h5 {
        font-size: 0.9rem;
        min-height: 2.8em;
    }
    
    .example-card .code-panel.small .code-content {
        padding: 10px;
        font-size: 0.75rem;
    }
    
    .example-btn {
        padding: 8px 12px;
        font-size: 0.8rem;
        min-height: 40px;
    }
}

@media (max-width: 480px) {
    .examples-grid {
        gap: 15px;
    }
    
    .example-card {
        min-height: 130px;
        padding: 12px;
    }
    
    .example-card .code-panel.small {
        min-height: 70px;
    }
    
    .example-card .code-panel.small .code-content {
        padding: 8px;
        font-size: 0.7rem;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .multi-color-demo {
        grid-template-columns: 1fr;
    }
    
    .color-stop {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    
    .color-stop-controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .best-practices {
        grid-template-columns: 1fr;
    }
    
    .preset-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .preset-btn {
        width: 200px;
    }
}

/* Responsive para selectores de color */
@media (max-width: 768px) {
    .color-picker-controls {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .animation-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-play, .btn-reset {
        width: 200px;
        justify-content: center;
    }
    
    .animation-speed-control {
        width: 100%;
        justify-content: space-between;
    }
}

/* === Panel de codigo === */

.code-panel.enhanced {
  width: 100%;
  max-width: 600px;
  margin: 0 auto 20px auto;  
  text-align: left;
  background: #1e1e1e;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.6);
  border: 1px solid #444;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.code-panel.enhanced:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 38px rgba(0, 0, 0, 0.7);
}

.code-content.centered {
  display: block;
  font-size: 0.95rem;
  line-height: 1.4;
  text-align: left;
  background: #1e1e1e;
  border-radius: 0 0 12px 12px;
  padding: 18px 25px;
  overflow-x: auto;
}

.code-content.centered pre {
  margin: 0;
  padding: 0;
  line-height: inherit;
}

.code-content.centered code {
  display: block;
  line-height: inherit;
  white-space: pre;
}

.example-card .code-panel.enhanced {
  margin-bottom: 20px !important;  
}

.example-card > * + * {
  margin-top: 15px;
}



/* Responsive */
@media (max-width: 1100px) {
    .direction-options-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .degrees-demo-enhanced {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .demo-result-enhanced,
    .angle-explanation-enhanced,
    .comparison-grid,
    .animation-demo,
    .summary-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .demo-controls {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .direction-options-grid {
        grid-template-columns: 1fr;
    }
    
    .degrees-demo-enhanced {
        grid-template-columns: 1fr;
    }
    
    .animation-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-play, .btn-reset {
        width: 200px;
        justify-content: center;
    }
}