/* === ESTILOS PARA RGBA Y HSLA === */

.linear-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 20px;
    align-items: flex-start;
    overflow: visible !important;
}

.main-lesson-container {
    grid-column: 2;
    min-height: 0;
    overflow: visible !important;
}

/* Tarjeta de contenido principal */
.card {
    background: rgba(17,24,39,0.92);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 12px 34px var(--shadow);
    animation: fadeUp 0.8s ease forwards;
    overflow: visible !important;
    min-height: auto;
}

/* Menú lateral mejorado */
.side-menu {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    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: 16px;
    color: var(--accent);
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    padding-bottom: 0px;
}

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

.lesson-list li {
    padding: 12px 15px;
    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: 10px;
    font-size: 0.95rem;
}

.lesson-list li:hover {
    background: rgba(56,189,248,0.15);
    border-color: var(--accent);
    transform: translateX(5px);
}

.lesson-list li.active {
    background: rgba(56,189,248,0.25);
    color: #dbeafe;
    border-color: var(--accent);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(56,189,248,0.3);
}

/* Estados de las lecciones */

/* Header de la lección */
.lesson-content h2 {
    margin: 0 0 15px 0;
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--accent);
    text-align: left;
    font-weight: 700;
}

/* Bloques de teoría */
.theory-block {
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    min-height: auto;
    overflow: visible !important;
}

.theory-block:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.theory-block h3 {
    color: var(--accent);
    margin: 0 0 15px 0;
    font-size: 1.4rem;
}

.theory-block p {
    margin: 12px 0;
    color: var(--text);
    line-height: 1.6;
    font-size: 1rem;
}

.theory-block strong {
    color: var(--accent);
}

/* Bloques de ejemplo */
.example-block {
    background: rgba(56, 189, 248, 0.05);
    border-radius: 12px;
    padding: 25px;
    margin: 30px 0;
    border-left: 4px solid var(--accent);
    overflow: visible !important;
    min-height: auto !important;
}

.example-block h4 {
    margin: 0 0 15px 0;
    color: var(--accent);
    font-size: 1.2rem;
}

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

.journey-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.journey-intro p {
    margin: 0;
    color: var(--text);
    font-size: 1.1rem;
    line-height: 1.5;
}

/* Conceptos  */
.concept-box {
    background: rgba(56, 189, 248, 0.1);
    border-left: 4px solid var(--accent);
    padding: 20px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
    overflow: visible !important;
    min-height: auto !important;
}

.concept-box h4 {
    margin-top: 0;
    color: var(--accent);
    font-size: 1.2rem;
}

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

.concept-box li {
    margin: 10px 0;
    color: var(--text);
    line-height: 1.5;
}

/* Demo comparacion */
.demo-comparison {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 25px;
    margin: 25px 0;
}

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

.demo-item p {
    margin-top: 15px;
    font-size: 0.95rem;
    color: var(--muted);
    line-height: 1.4;
}

.demo-item strong {
    color: var(--accent);
}

.demo-box {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    border: 2px solid var(--border);
    margin: 0 auto;
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.demo-box:hover {
    transform: scale(1.05);
}

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

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

/* Responsive */
@media (max-width: 900px) {
    .linear-layout {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .main-lesson-container {
        grid-column: 1;
    }
    
    .side-menu {
        position: relative;
        top: 0;
        order: -1;
    }
    
    .demo-comparison {
        flex-direction: column;
        gap: 20px;
    }
    
    .journey-intro {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .card {
        padding: 20px;
    }
    
    .lesson-list li {
        padding: 10px 12px;
        font-size: 0.9rem;
    }
    
    .theory-block {
        margin-bottom: 25px;
        padding-bottom: 20px;
        overflow: visible !important;
    }
}

/* Patrón de fondo para demostrar transparencia */
.checkerboard {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    z-index: -1;
}

/* Demostración de escala alpha */
.alpha-scale-demo {
    display: flex;
    justify-content: space-between;
    margin: 20px 0;
    gap: 10px;
}

.alpha-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
}

.alpha-box {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}

.alpha-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

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

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

/* Demostración de transparencia */
.transparency-demo {
    text-align: center;
}

.color-comparison {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 15px;
}

.color-box {
    width: 100px;
    height: 100px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    border: 2px solid var(--border);
}

.color-box.transparent::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.color-box span {
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 8px;
    border-radius: 6px;
    font-weight: bold;
    font-size: 0.8rem;
    color: var(--bg);
}

/* Opciones alpha */
.alpha-options {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    justify-content: center;
}

.alpha-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.alpha-demo {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 5px;
    position: relative;
    overflow: hidden;
}

.alpha-demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.alpha-option span {
    font-size: 0.75rem;
    color: var(--muted);
}

/* Controles interactivos */
.interactive-demo {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 25px;
    margin: 20px 0;
    border: 1px solid var(--border);
    overflow: visible !important;
    min-height: auto !important;
}

.demo-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.control-group label {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
}

.control-group input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.1);
    outline: none;
    -webkit-appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg);
}

.control-group input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: 2px solid var(--bg);
}

.control-group span {
    color: var(--muted);
    font-family: 'Consolas', monospace;
    font-size: 0.85rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 8px;
    border-radius: 4px;
}

/* Casos de uso */
.use-cases-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.use-case-card {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    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;
}

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

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

.use-case-content h5 {
    margin: 0 0 8px 0;
    color: var(--accent);
    font-size: 1.1rem;
}

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

/* Pros y cons */
.pros-cons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.pros h6, .cons h6 {
    margin: 0 0 10px 0;
    font-size: 0.9rem;
    color: var(--accent);
}

.pros ul, .cons ul {
    margin: 0;
    padding-left: 20px;
}

.pros li, .cons li {
    margin: 6px 0;
    font-size: 0.85rem;
    color: var(--text);
}

.pros li {
    color: #4caf50;
}

.cons li {
    color: #f44336;
}

/* Resaltado de sintaxis específico */
.rgba-r { color: #ff6b6b; }
.rgba-g { color: #4ecdc4; }
.rgba-b { color: #45b7d1; }
.rgba-a { color: #ffe66d; }

.hsla-h { color: #ff6b6b; }
.hsla-s { color: #4ecdc4; }
.hsla-l { color: #45b7d1; }
.hsla-a { color: #ffe66d; }

/* Preview de color */
.color-preview-box {
    width: 60px;
    height: 30px;
    border-radius: 6px;
    border: 1px solid var(--border);
    margin: 10px 0;
}

/* Demo boxes mejorados */
.demo-box-large {
    width: 100%;
    height: 200px;
    border-radius: 12px;
    border: 2px solid var(--border);
    box-shadow: 0 8px 25px var(--shadow);
    position: relative;
    transition: all 0.3s ease;
    overflow: hidden;
}

.demo-box-final {
    height: 80px;
    border-radius: 10px;
    margin: 0 auto 15px;
    border: 2px solid var(--border);
    box-shadow: 0 8px 25px var(--shadow);
    position: relative;
    overflow: hidden;
}

/* 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;
}

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

/* Tip boxes */
.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;
    margin: 10px 0;
}

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

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

.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;
}

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

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

/* Demo result */
.demo-result-enhanced {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
    align-items: start;
    overflow: visible !important;
    min-height: auto !important;
}

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

.demo-explanation {
    color: var(--muted);
    font-style: italic;
    font-size: 0.9rem;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    padding: 10px;
    border-radius: 6px;
}

/* Syntax highlighting para colores */
.css-number {
    color: #b5cea8;
}

.css-unit {
    color: #b5cea8;
}

/* Comparación grid */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 20px 0;
    overflow: visible !important;
    min-height: auto !important;
}

.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;
}

/* Application grid */
.application-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 30px 0;
    overflow: visible !important;
    min-height: auto !important;
}

.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;
}

/* Properties grid */
.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;
}

/* === estilos - sintaxys RGBA/HSLA === */

.syntax-breakdown {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(30, 41, 59, 0.95));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    margin: 25px 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: visible !important;
    min-height: auto !important;
    height: auto !important;
}

.syntax-breakdown::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4, #45b7d1, #ffe66d);
}

.syntax-breakdown h4 {
    color: var(--accent);
    margin: 0 0 25px 0;
    font-size: 1.4rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.syntax-breakdown h4::before {
    content: '🔍';
    font-size: 1.2em;
}

/* Panel de código para sintaxis */
.syntax-breakdown .code-panel {
    margin: 0 0 30px 0;
    border: 2px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.5);
}

.syntax-breakdown .code-header {
    background: linear-gradient(135deg, #2d2d2d, #1a1a1a);
    border-bottom: 1px solid #444;
}

/* Grid de breakdown */
.breakdown-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 25px;
    min-height: auto !important;
    height: auto !important;
    overflow: visible !important;
}

.breakdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 15px;
    padding: 20px 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden !important;
    min-height: auto !important;
    height: auto !important;
}

.breakdown-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.breakdown-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent);
    opacity: 0.7;
}

/* Íconos para cada parte */
.breakdown-item:nth-child(1)::after { content: '🔴'; }
.breakdown-item:nth-child(2)::after { content: '🟢'; }
.breakdown-item:nth-child(3)::after { content: '🔵'; }
.breakdown-item:nth-child(4)::after { content: '⚪'; }

.breakdown-item::after {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 1.5rem;
    opacity: 0.3;
}

.part-name {
    font-weight: bold;
    color: var(--accent);
    min-width: 140px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.part-name::before {
    font-size: 1.2em;
}

.breakdown-item:nth-child(1) .part-name::before { content: '🎯'; }
.breakdown-item:nth-child(2) .part-name::before { content: '🎯'; }
.breakdown-item:nth-child(3) .part-name::before { content: '🎯'; }
.breakdown-item:nth-child(4) .part-name::before { content: '🎭'; }

.part-desc {
    color: var(--text);
    flex: 1;
    line-height: 1.6;
    font-size: 0.95rem;
    min-width: 0;
    overflow: visible !important;
    min-height: auto !important;
}

/* Demo visual de rangos */
.range-visualization {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow: visible !important;
    min-height: auto !important;
    height: auto !important;
}

.range-item {
    text-align: center;
    padding: 15px;
    min-height: auto !important;
    height: auto !important;
    overflow: visible !important;
}

.range-item h5 {
    margin: 0 0 10px 0;
    color: var(--accent);
    font-size: 1rem;
}

.range-scale {
    height: 8px;
    background: linear-gradient(90deg, #000, #fff);
    border-radius: 4px;
    margin: 10px 0;
    position: relative;
    width: 100%;
}

.range-scale.red { background: linear-gradient(90deg, #000, #ff0000); }
.range-scale.green { background: linear-gradient(90deg, #000, #00ff00); }
.range-scale.blue { background: linear-gradient(90deg, #000, #0000ff); }
.range-scale.alpha { background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8)); }

.range-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--muted);
    margin-top: 5px;
}

/* Ejemplos de valores */
.value-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-top: 20px;
    min-height: auto !important;
}

.value-example {
    text-align: center;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    min-height: auto !important;
    height: auto !important;
}

.value-example:hover {
    transform: scale(1.05);
    border-color: var(--accent);
}

.value-example .demo-color {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    margin: 0 auto 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.value-example code {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
}

.value-example span {
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
    margin-top: 5px;
}

/* Nota importante */
.syntax-note {
    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;
    text-align: center;
}

.syntax-note h5 {
    margin: 0 0 10px 0;
    color: #ffc107;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.syntax-note h5::before {
    content: '💡';
}

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

/* === correciones para el ejemplo de Red === */
.range-demo-enhanced {
    background: rgba(255, 107, 107, 0.05);
    border: 1px solid rgba(255, 107, 107, 0.2);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    overflow: visible !important;
    min-height: auto !important;
}

.range-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    align-items: start;
}

.range-text {
    padding: 15px;
}

.range-text h5 {
    color: #ff6b6b;
    margin: 0 0 10px 0;
    font-size: 1.1rem;
}

.range-text p {
    margin: 8px 0;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.5;
}

.range-visual {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

.range-scale-enhanced {
    height: 12px;
    background: linear-gradient(90deg, #000, #ff0000);
    border-radius: 6px;
    margin: 10px 0;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.range-markers {
    display: flex;
    justify-content: space-between;
    margin-top: 5px;
}

.range-marker {
    font-size: 0.75rem;
    color: var(--muted);
    text-align: center;
}

/* === diseño - paso a paso RGBA/HSLA === */

.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;
    margin: 15px 0;
}

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

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

/* Panel de código dentro de pasos */
.step-content .code-panel.small {
    margin: 15px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.step-content .code-panel.small .code-content {
    padding: 15px;
    font-size: 0.9rem;
}

/* Opciones alpha en pasos */
.alpha-options {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.alpha-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
    min-width: 80px;
}

.alpha-demo {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    border: 1px solid var(--border);
    margin-bottom: 5px;
    position: relative;
    overflow: hidden;
}

.alpha-demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

.alpha-option span {
    font-size: 0.75rem;
    color: var(--muted);
}

.alpha-option code {
    font-weight: bold;
    color: var(--accent);
    font-size: 0.7rem;
}

/* Preview de color en pasos */
.color-preview-box {
    width: 60px;
    height: 30px;
    border-radius: 6px;
    border: 1px solid var(--border);
    margin: 10px 0;
    display: inline-block;
}

/* 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);
    position: relative;
    overflow: hidden;
}

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

/* Estilos para ejemplos de código RGB */
.rgb-example {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border-left: 4px solid #ff6b6b;
}

.rgb-example code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
}

.rgb-example .rgb-r {
    color: #ff6b6b;
}

.rgb-example .rgb-g {
    color: #4ecdc4;
}

.rgb-example .rgb-b {
    color: #45b7d1;
}

/* Ejemplos de código con colores */
.color-coded-example {
    background: #1e1e1e;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    overflow-x: auto;
}

.color-coded-example code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
}

.color-coded-example .css-property {
    color: #9cdcfe;
}

.color-coded-example .css-function {
    color: #dcdcaa;
}

.color-coded-example .css-value {
    color: #ce9178;
}

.color-coded-example .css-number {
    color: #b5cea8;
}

.color-coded-example .css-comment {
    color: #6a9955;
    font-style: italic;
}

/* texto de ejemplo RGB */
.rgb-text-example {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 1.1rem;
    font-weight: bold;
    padding: 10px 15px;
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.3);
    display: inline-block;
    margin: 5px 0;
}

.rgb-text-example .rgb-part {
    padding: 2px 4px;
    border-radius: 3px;
}

.rgb-text-example .rgb-part.r {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
}

.rgb-text-example .rgb-part.g {
    background: rgba(78, 205, 196, 0.2);
    color: #4ecdc4;
}

.rgb-text-example .rgb-part.b {
    background: rgba(69, 183, 209, 0.2);
    color: #45b7d1;
}

/* Ejemplo de color base con colores */
.base-color-example {
    display: flex;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.05);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    border-left: 4px solid var(--accent);
}

.color-swatch {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
}

.color-info {
    flex: 1;
}

.color-info h5 {
    margin: 0 0 8px 0;
    color: var(--accent);
    font-size: 1.1rem;
}

.color-code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    background: rgba(0, 0, 0, 0.3);
    padding: 8px 12px;
    border-radius: 6px;
    display: inline-block;
}

.color-code .color-r {
    color: #ff6b6b;
}

.color-code .color-g {
    color: #4ecdc4;
}

.color-code .color-b {
    color: #45b7d1;
}

/* Elige un Color Base */
.color-base-section {
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1), rgba(78, 205, 196, 0.1));
    border-radius: 12px;
    padding: 25px;
    margin: 25px 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.color-base-section h3 {
    color: var(--accent);
    margin-top: 0;
    text-align: center;
    font-size: 1.4rem;
}

.color-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.color-option {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.color-option:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.color-option .color-preview {
    width: 80px;
    height: 80px;
    border-radius: 10px;
    margin: 0 auto 15px;
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.color-option h5 {
    margin: 0 0 10px 0;
    color: var(--text);
    font-size: 1.1rem;
}

.color-option .color-code {
    font-size: 0.9rem;
    padding: 6px 10px;
}

/* === estilos - sintaxis rgba === */

.syntax-example-container {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(30, 41, 59, 0.95));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    margin: 25px 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: visible !important;
}

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

.syntax-example-header {
    text-align: center;
    margin-bottom: 25px;
}

.syntax-example-header h3 {
    color: var(--accent);
    margin: 0 0 8px 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.syntax-example-header h3::before {
    content: '🎨';
    font-size: 1.3em;
}

.syntax-example-header p {
    color: var(--muted);
    margin: 0;
    font-size: 1rem;
}

/* Grid principal del ejemplo */
.syntax-example-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
}

/* Panel de código */
.syntax-code-panel {
    background: #1e1e1e;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.code-panel-header {
    background: linear-gradient(135deg, #2d2d2d, #1a1a1a);
    padding: 15px 20px;
    border-bottom: 1px solid #444;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-panel-header .filename {
    color: #cccccc;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.code-panel-header .filename::before {
    content: '📄';
}

.code-panel-header .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;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.6;
    color: #d4d4d4;
}

/* Estilos para la sintaxis RGBA */
.rgba-syntax {
    margin: 0;
}

.rgba-syntax .comment {
    color: #6a9955;
    font-style: italic;
}

.rgba-syntax .property {
    color: #9cdcfe;
}

.rgba-syntax .function {
    color: #dcdcaa;
}

.rgba-syntax .value {
    color: #ce9178;
}

.rgba-syntax .rgb-r {
    color: #ff6b6b;
    font-weight: bold;
}

.rgba-syntax .rgb-g {
    color: #4ecdc4;
    font-weight: bold;
}

.rgba-syntax .rgb-b {
    color: #45b7d1;
    font-weight: bold;
}

.rgba-syntax .alpha {
    color: #ffe66d;
    font-weight: bold;
}

/* Panel de visualización */
.syntax-visual-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

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

.visual-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.visual-item:hover {
    transform: translateY(-3px);
    border-color: var(--accent);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.visual-item-header {
    margin-bottom: 15px;
}

.visual-item-header h4 {
    color: var(--accent);
    margin: 0 0 5px 0;
    font-size: 1.1rem;
}

.visual-item-header .color-code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 8px;
    border-radius: 4px;
    display: inline-block;
}

/* Demo boxes */
.demo-box-enhanced {
    width: 120px;
    height: 120px;
    border-radius: 12px;
    margin: 0 auto;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    position: relative;
    transition: transform 0.3s ease;
}

.demo-box-enhanced:hover {
    transform: scale(1.05);
}

.demo-box-solid {
    background: rgb(255, 0, 0);
}

.demo-box-transparent {
    background: rgba(255, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.demo-box-transparent::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    z-index: -1;
}

/* Explicación */
.syntax-explanation {
    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: 12px;
    padding: 20px;
    margin-top: 15px;
    text-align: center;
}

.syntax-explanation p {
    margin: 0;
    color: var(--text);
    font-size: 0.95rem;
    line-height: 1.5;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.syntax-explanation p::before {
    content: '💡';
    font-size: 1.1em;
}

/* === estilos - ejemplos imagenes === */
.syntax-demo-compact {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.95), rgba(30, 41, 59, 0.95));
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 25px;
    margin: 20px 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.syntax-demo-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.syntax-demo-header h3 {
    color: var(--accent);
    margin: 0;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.syntax-demo-header h3::before {
    content: '⚡';
}

.syntax-demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    align-items: start;
}

.code-column {
    background: #1e1e1e;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.code-column-header {
    background: #2d2d2d;
    padding: 12px 15px;
    border-bottom: 1px solid #444;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: #ccc;
}

.code-column-header::before {
    content: '💻';
}

.code-column-content {
    padding: 20px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

.visual-column {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.visual-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 10px;
}

.demo-item-compact {
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.demo-item-header {
    margin-bottom: 10px;
}

.demo-item-header h4 {
    color: var(--accent);
    margin: 0 0 5px 0;
    font-size: 1rem;
}

.demo-item-header .color-code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.8rem;
    color: var(--muted);
    background: rgba(255, 255, 255, 0.05);
    padding: 3px 6px;
    border-radius: 3px;
}

.demo-box-compact {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    margin: 0 auto;
    border: 2px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.demo-box-solid-compact {
    background: rgb(255, 0, 0);
}

.demo-box-transparent-compact {
    background: rgba(255, 0, 0, 0.5);
    position: relative;
    overflow: hidden;
}

.demo-box-transparent-compact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
    z-index: -1;
}

.explanation-compact {
    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: 8px;
    padding: 15px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.4;
}

/* responsive */

@media (max-width: 768px) {
    .syntax-breakdown {
        padding: 20px;
        overflow: visible !important;
    }
    
    .breakdown-items {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .breakdown-item {
        flex-direction: column;
        gap: 10px;
        text-align: center;
        padding: 15px;
    }
    
    .part-name {
        min-width: auto;
        justify-content: center;
    }
    
    .range-visualization {
        grid-template-columns: 1fr;
        padding: 15px;
    }
    
    .value-examples {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .theory-block {
        margin-bottom: 25px;
        padding-bottom: 20px;
        overflow: visible !important;
    }
    
    .syntax-demo-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .visual-demo {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .syntax-demo-compact {
        padding: 20px;
    }
    
    .range-info {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .range-text, .range-visual {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .value-examples {
        grid-template-columns: 1fr;
    }
    
    .syntax-breakdown h4 {
        font-size: 1.2rem;
    }
    
    .breakdown-item {
        padding: 12px;
    }
    
    .component-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .demo-box-enhanced {
        width: 100px;
        height: 100px;
    }
    
    .code-content {
        padding: 15px;
        font-size: 0.85rem;
    }
    
    .syntax-example-header h3 {
        font-size: 1.3rem;
    }
}

/* Animaciones suaves */
.step-card {
    animation: slideInUp 0.6s ease-out;
}

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

/* Efectos de hover */
.step-card:hover .step-number {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.step-card:hover .step-tag {
    background: rgba(56, 189, 248, 0.3);
    transition: background 0.3s ease;
}

/* Responsive para mejoras de color */
@media (max-width: 768px) {
    .color-options {
        grid-template-columns: 1fr;
    }
    
    .base-color-example {
        flex-direction: column;
        text-align: center;
    }
    
    .rgb-text-example {
        font-size: 1rem;
    }
}

@media (max-width: 900px) {
    .syntax-example-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .visual-comparison {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .syntax-example-container {
        padding: 20px;
    }
}

* {
    box-sizing: border-box;
}

.linear-layout,
.main-lesson-container,
.card,
.lesson-content,
.theory-block,
.example-block,
.concept-box,
.interactive-demo,
.demo-result-enhanced,
.comparison-grid,
.application-grid,
.syntax-breakdown,
.breakdown-items,
.breakdown-item,
.range-visualization,
.range-item,
.value-examples,
.value-example,
.syntax-example-container,
.syntax-demo-compact {
    overflow: visible !important;
    min-height: auto !important;
    height: auto !important;
}

/* contenido se expande correctamente */
.part-desc,
.step-explanation,
.property-content,
.use-case-content {
    overflow: visible !important;
    min-height: auto !important;
}

/* === correccion de desbordamiento en sintaxis y valores === */
.syntax-breakdown,
.breakdown-items,
.breakdown-item,
.range-visualization,
.range-item {
    overflow: hidden !important;
    height: auto !important;
    min-height: unset !important;
}

.breakdown-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    justify-items: stretch;
}

.range-visualization {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.range-item {
    width: 100%;
    max-width: 350px;
    margin: 0 auto;
}

.range-scale {
    width: 100%;
    border-radius: 6px;
}

/* Evita que los cuadros se salgan del borde */
.card {
    overflow: hidden !important;
}


/* SECCION 3 ===*/

/* Demo de overlay sobre imagen */
.image-overlay-demo {
    position: relative;
    width: 100%;
    height: 200px;
    border-radius: 12px;
    overflow: hidden;
}

.demo-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #667eea, #764ba2);
    position: relative;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.overlay-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    z-index: 2;
}

.overlay-content h4 {
    margin: 0 0 10px 0;
    font-size: 1.3rem;
}

.overlay-content p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.9;
}

/* Demo de modal */
.modal-demo {
    position: relative;
    width: 100%;
    height: 180px;
}

.modal-backdrop-demo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.modal-content-demo {
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    min-width: 200px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.modal-content-demo h4 {
    margin: 0 0 10px 0;
    color: #333;
}

.modal-content-demo p {
    margin: 0 0 15px 0;
    color: #666;
    font-size: 0.9rem;
}

.demo-button {
    background: #4ecdc4;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

/* Demo de paleta de colores */
.color-palette-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    width: 100%;
}

.color-variation {
    height: 60px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.8rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

/* Demo de sombras */
.shadow-demo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    width: 100%;
}

.shadow-card {
    padding: 20px;
    border-radius: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.shadow-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 1;
}

.shadow-card p {
    margin: 0 0 8px 0;
    color: #333;
    font-weight: 700;
    font-size: 1rem;
    position: relative;
    z-index: 2;
}

.shadow-card small {
    color: #666;
    font-size: 0.75rem;
    position: relative;
    z-index: 2;
    font-family: 'Consolas', monospace;
}

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

/* Colores de fondo específicos para cada tarjeta de sombra */
.shadow-demo .shadow-card:nth-child(1)::before {
    background: rgba(255, 255, 255, 0.95);
}

.shadow-demo .shadow-card:nth-child(2)::before {
    background: rgba(248, 249, 250, 0.95);
}

.shadow-demo .shadow-card:nth-child(3)::before {
    background: rgba(240, 248, 255, 0.95);
}

.shadow-demo .shadow-card:nth-child(4)::before {
    background: rgba(240, 255, 244, 0.95);
}

/* Demo de temas */
.theme-demo {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

.theme-card {
    padding: 15px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.theme-card h4 {
    margin: 0 0 8px 0;
    font-size: 1.1rem;
}

.theme-card p {
    margin: 0;
    font-size: 0.85rem;
    opacity: 0.8;
}

.light-theme {
    background: rgba(255, 255, 255, 0.8) !important;
}

.dark-theme {
    background: rgba(0, 0, 0, 0.8) !important;
}

/* Sintaxis HSLA para la sección */
.hsla-syntax .hsla-h { color: #ff6b6b; font-weight: bold; }
.hsla-syntax .hsla-s { color: #4ecdc4; font-weight: bold; }
.hsla-syntax .hsla-l { color: #45b7d1; font-weight: bold; }
.hsla-syntax .hsla-a { color: #ffe66d; font-weight: bold; }


/* === SECCION 4 === */

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

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

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

.comparison-header {
    padding: 20px;
    background: rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.comparison-header h5 {
    margin: 0;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.comparison-badge {
    background: rgba(129, 140, 248, 0.2);
    color: var(--accent-2);
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.comparison-content {
    padding: 0;
}

/* Demostraciones de color */
.color-demos {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.color-demo-item {
    padding: 15px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    text-align: center;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.2s ease;
}

.color-demo-item:hover {
    transform: scale(1.02);
}

/* Demostraciones de variaciones */
.variation-demos {
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.variation-item {
    padding: 15px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 0.8rem;
    text-align: center;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Notas de comparación */
.comparison-note {
    padding: 15px 20px;
    background: rgba(255, 193, 7, 0.1);
    border-top: 1px solid rgba(255, 193, 7, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

.comparison-note.success {
    background: rgba(76, 175, 80, 0.1);
    border-top: 1px solid rgba(76, 175, 80, 0.2);
}

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

/* Tabla comparativa */
.comparison-table-container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    padding: 20px;
    margin: 25px 0;
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.comparison-table th {
    background: rgba(56, 189, 248, 0.2);
    color: var(--accent);
    padding: 15px;
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid rgba(56, 189, 248, 0.3);
}

.comparison-table td {
    padding: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text);
}

.comparison-table tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

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

/* Guía de elección */
.choice-guide {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin: 25px 0;
}

.choice-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    overflow: hidden;
}

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

.choice-header h5 {
    margin: 0;
    font-size: 1.1rem;
}

.choice-badge {
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.rgba-badge {
    background: rgba(255, 107, 107, 0.2);
    color: #ff6b6b;
}

.hsla-badge {
    background: rgba(78, 205, 196, 0.2);
    color: #4ecdc4;
}

.choice-content {
    padding: 20px;
}

.choice-content ul {
    margin: 0;
    padding-left: 0;
    list-style: none;
}

.choice-content li {
    padding: 8px 0;
    color: var(--text);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.choice-content li::before {
    content: '•';
    color: var(--accent);
    font-weight: bold;
    flex-shrink: 0;
}

/* Tip final */
.final-tip {
    margin-top: 30px;
    text-align: center;
}

.final-tip p {
    font-size: 1rem;
    line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
    .comparison-grid-enhanced {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .choice-guide {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .variation-demos {
        grid-template-columns: 1fr;
    }
    
    .comparison-table-container {
        padding: 15px;
    }
    
    .comparison-table {
        font-size: 0.8rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 10px 8px;
    }
}


/* === SECCION 5 === */

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

.practice-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    min-height: 500px;
}

/* Panel de Código */
.code-panel-practice {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.panel-header h4 {
    margin: 0;
    color: var(--accent);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.panel-badge {
    background: rgba(56, 189, 248, 0.2);
    color: var(--accent);
    padding: 4px 10px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Editor de Código */
.code-editor {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.editor-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tab-button {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: var(--text);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-button:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tab-button.active {
    background: rgba(56, 189, 248, 0.2);
    color: var(--accent);
    border-bottom: 2px solid var(--accent);
}

.editor-content {
    flex: 1;
    position: relative;
}

.tab-content {
    display: none;
    height: 100%;
}

.tab-content.active {
    display: block;
}

.css-editor {
    width: 100%;
    height: 100%;
    min-height: 300px;
    background: #1e1e1e;
    color: #d4d4d4;
    border: none;
    padding: 20px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    border-radius: 0;
}

.css-editor:focus {
    outline: none;
}

/* Acciones del Editor */
.editor-actions {
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 12px;
}

.action-button {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.action-button:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.action-button.primary {
    background: rgba(56, 189, 248, 0.2);
    border-color: var(--accent);
    color: var(--accent);
}

.action-button.primary:hover {
    background: rgba(56, 189, 248, 0.3);
}

/* Panel de Vista Previa */
.preview-panel {
    background: rgba(17, 24, 39, 0.9);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.preview-content {
    flex: 1;
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: 
        linear-gradient(45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,0.1) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,0.1) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,0.1) 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
}

#live-preview {
    text-align: center;
    width: 100%;
}

.background-box {
    margin: 0 auto 30px auto;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.text-element {
    padding: 10px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

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

.preview-box {
    width: 80px;
    height: 60px;
    border-radius: 8px;
    margin: 0 auto 8px auto;
    background: rgba(255, 255, 255, 0.1);
}

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

/* Consejos de Práctica */
.practice-tips {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.tip-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border-left: 4px solid var(--accent);
}

.tip-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tip-content h5 {
    margin: 0 0 8px 0;
    color: var(--accent);
    font-size: 1rem;
}

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

/* Responsive */
@media (max-width: 968px) {
    .practice-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .preview-content {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .editor-actions {
        flex-direction: column;
    }
    
    .action-button {
        width: 100%;
    }
}