:root {
    --primary-color: #0d1117;
    --secondary-color: #161b22;
    --tertiary-color: #21262d;
    --turquoise-color: #0b9a76;
    --text-color: #c9d1d9;
    --heading-color: #e6e6e6;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

/* ------------------------------------------- RESET Y ESTILOS ------------------------------------------- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* -------------------------------------------  Utilidades y Tipografía------------------------------------------- */
.turquoise-icon {
    color: var(--turquoise-color);
    margin-right: 10px;
}

code {
    background-color: var(--secondary-color);
    padding: 2px 5px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--turquoise-color);
}

/* ------------------------------------------- BTNS ------------------------------------------- */
.btn, .source-btn {
    display: inline-block;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.2s, background-color 0.2s;
}

.btn {
    padding: 12px 25px;
}

.main-btn {
    background-color: var(--turquoise-color);
    color: var(--primary-color);
    border: none;
}

.main-btn:hover {
    background-color: #2fa88a;
    transform: translateY(-2px);
}

.cta-btn {
    background: none;
    color: var(--turquoise-color) !important;
    border: 1px solid var(--turquoise-color);
    padding: 4px 12px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.cta-btn:hover {
    background-color: var(--turquoise-color);
    color: var(--primary-color) !important;
    border-color: var(--turquoise-color);
}

.source-btn {
    padding: 10px 20px;
    background-color: #4dd0e1;
    color: #1a1a1a;
    border-radius: 4px;
}

.source-btn:hover {
    background-color: #71e8f5;
}

/* ------------------------------------------- HEADER ------------------------------------------- */
header {
    background-color: var(--secondary-color);
    padding: 1rem 0;
    border-bottom: 1px solid var(--tertiary-color);
    top: 0;
    width: 100%;
    z-index: 1000;
    position: sticky;
}

header .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    padding: 0;
    margin: 0;
}

nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

nav a:hover {
    color: var(--turquoise-color);
}

/* ------------------------------------------- HERO ------------------------------------------- */
#hero {
    min-height: 92vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #151920;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

#hero h1 {
    font-size: 4.2rem;
    margin-bottom: 0.5rem;
    color: var(--heading-color);
    text-shadow: 2px 2px 4px var(--shadow-color);
}

#hero p {
    font-size: 1.3rem;
    max-width: 650px;
    margin: 0 auto 2rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* ------------------------------------------- FEATURES GLANCE ------------------------------------------- */
#features {
    padding: 5rem 0;
    text-align: center;
}

#features h2 {
    font-size: 2rem;
    margin-bottom: 3rem;
    color: var(--heading-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background-color: var(--secondary-color);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid var(--tertiary-color);
    transition: transform 0.3s, border-color 0.3s;
}

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

.feature-card i {
    font-size: 3rem;
    color: var(--turquoise-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--heading-color);
    font-size: 1.2rem;
}

/* ------------------------------------------- HOW TO INSTALL ------------------------------------------- */
#how-to {
    padding: 5rem 0;
    background-color: var(--secondary-color);
}

.how-to-content {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.how-to-content h2 {
    flex-basis: 100%;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--heading-color);
}

.how-to-content .text-content {
    flex: 2;
    min-width: 400px;
    max-width: none; 
}

.image-content {
    flex: 2;
    display: flex; 
    justify-content: flex-end; 
    margin-left: 1%;
}

.bordered-image {
    margin-left: 1%;
    border: 2px solid var(--tertiary-color);
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--shadow-color);
    max-width: 110%; 
    height: auto;
}

.known-bugs-full-width, .known-bugs { 
    margin-top: 2rem; 
}

.known-bugs-full-width h3, .known-bugs h3 { 
    font-size: 1.8rem;
    color: var(--turquoise-color);
    margin-bottom: 0.5rem;
}

/* ------------------------------------------- DETAILED FEATURES ------------------------------------------- */
#detailed-features {
    padding: 5rem 0;
}

#detailed-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--heading-color);
}

.feature-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr); 
    gap: 2rem;
}

.detail-card {
    background-color: var(--tertiary-color);
    padding: 2rem;
    border-radius: 10px;
    transition: background-color 0.3s;
}

.detail-card:hover {
    background-color: #2b303a;
}

.detail-card h3 {
    color: var(--turquoise-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* ------------------------------------------- FAQ ------------------------------------------- */
#faq {
    padding: 5rem 0;
    background-color: var(--primary-color);
}

#faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--heading-color);
}

.update-info {
    text-align: center;
    color: var(--text-color);
    font-style: italic;
    margin-bottom: 3rem;
    font-size: 0.9rem;
}

.faq-group {
    margin-bottom: 3rem;
    padding: 1rem 0;
    border-top: 1px solid var(--tertiary-color);
}

.faq-group h3 {
    font-size: 1.8rem;
    color: var(--heading-color);
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--tertiary-color);
    padding-bottom: 0.5rem;
}

.faq-item {
    border: 1px solid var(--tertiary-color);
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-question {
    width: 100%;
    background-color: var(--secondary-color);
    color: var(--heading-color);
    padding: 18px 25px;
    text-align: left;
    border: none;
    outline: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '\2b';
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--turquoise-color);
    transition: transform 0.3s;
}

.faq-question.active {
    background-color: var(--tertiary-color);
    color: var(--turquoise-color);
}

.faq-question.active::after {
    content: '\2212';
    transform: rotate(0deg);
}

.faq-answer {
    padding: 0 25px;
    background-color: var(--tertiary-color);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
}

.faq-answer p {
    padding: 15px 0;
    color: var(--text-color);
}

.faq-answer a.turquoise-link {
    color: var(--turquoise-color);
    text-decoration: none;
    font-weight: bold;
}

.faq-answer a.turquoise-link:hover {
    text-decoration: underline;
}

/* ------------------------------------------- FOOTER ------------------------------------------- */
footer {
    background-color: var(--secondary-color);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--tertiary-color);
}

footer p {
    font-size: 0.9rem;
    color: var(--text-color);
}

/* ------------------------------------------- RESPONSIVE ------------------------------------------- */
@media (max-width: 1024px) {
    nav ul {
        gap: 20px;
    }

    #hero h1 {
        font-size: 3.5rem;
    }

    #hero p {
        font-size: 1.1rem;
    }

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

    .feature-details-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    header .container {
        flex-direction: column;
        gap: 15px;
    }

    nav ul {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }

    #hero {
        min-height: 80vh;
        padding: 3rem 0;
    }

    #hero h1 {
        font-size: 2.5rem;
    }
    #hero p {
        font-size: 1rem;
    }

    .download-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .btn {
        padding: 10px 20px;
        width: 100%;
        max-width: 300px;
    }

    #features, #faq, #detailed-features {
        padding: 3rem 0;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .how-to-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        align-items: center;
    }

    .how-to-content h2 {
        margin-bottom: 2rem;
    }
    
    .how-to-content .text-content {
        order: 2;
        flex: 1 1 100%;
        padding: 0;
        background-color: transparent;
    }

    .image-side-container {
        order: 1;
        flex: 1 1 100%;
        padding: 1rem; 
        background-color: #212529;
        margin-top: 1rem;
    }

    .faq-question {
        padding: 15px 20px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 16px;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
    }

    #hero h1 {
        font-size: 2rem;
    }

    #how-to {
        padding: 2rem 0;
    }
}