@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300..700&family=Inconsolata:wght@200..900&display=swap');

:root {
    --bg-main: #040115;
    --bg-navbar: #06001C;
    --bg-panel: #050015;
    /* --bg-select: #08012D; */
    /* --bg-dark-soft: #111111; */

    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    --accent-purple: #8B5CF6;
    --accent-purple-glow: #9857FF;

    /* --glass-03: rgba(255, 255, 255, 0.03); */
    /* --glass-05: rgba(255, 255, 255, 0.05);  */
    --glass-10: rgba(255, 255, 255, 0.1);
    --glass-20: rgba(255, 255, 255, 0.2);
}

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

html {
  scroll-behavior: smooth;
}

body {

    background-color: var(--bg-main);
    color: var(--text-secondary);
    font-family: "Fira Code", monospace;
}

h1 {
    font-family: "Inconsolata";
    color: var(--text-primary);
    cursor: default;
}

h2 {
    color: var(--text-primary);
    font-size: 28px;
    text-shadow: 0 0 20px var(--accent-purple-glow);
    cursor: default;
}

p, h3 {
    cursor: default;
}

ul,
li {
    margin: 0;
    padding: 0;
    list-style: none;
}

hr {
    margin: 40px 0;
    height: 1px;
    border: none;
    background: linear-gradient(to right,
            transparent 10%,
            var(--accent-purple),
            transparent 90%);
}

/* Header */
.nav-header {
    padding: 15px;
    display: flex;
    align-items: center;
    /* justify-content: space-between; */
    height: 120px;
    background-image: linear-gradient(var(--bg-navbar) 0% 55%, transparent);
    /* position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10; */
}
.navbar-toggler {
    font-size: 28px;
    color: var(--accent-purple-glow);
}


.nav-header img {
    width: 200px;
    height: auto;
}


.nav-header ul {
    display: flex;
    gap: 30px;
}

.nav-header ul li a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    text-shadow: 0 0 10px var(--accent-purple-glow);

}

.nav-header span{
    transition: all 0.3s ease-in-out;
}

.nav-header span:hover {
    color: var(--accent-purple-glow);
    text-shadow: 0 0 40px var(--accent-purple-glow);
    font-size: 20px;
}

.title-header {
    text-align: center;
    /* margin: 150px 0 40px 0; */
    margin: 40px 0;
    background-color: var(--bg-panel);
}

.title-header h1 {
    font-size: 48px;
    text-shadow: 0 0 30px var(--accent-purple-glow);
}

.title-header p {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* Main index */
.info-main {
    display: flex;
    align-items: center;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
    justify-content: center;
    column-gap: 200px;
    row-gap: 50px;
    max-width: 1100px;
}

.card-main {
    max-width: 400px;
    padding: 20px;
    background-color: var(--bg-panel);
    border-radius: 10px;
    box-shadow: 0 0 20px var(--accent-purple-glow);
    text-align: justify;
}

.card-main h2 {
    text-align: center;
    margin-bottom: 20px;
}

.card-main:hover {
    box-shadow: 0 0 30px var(--accent-purple-glow);
    transition: all 0.3s ease-in-out;
}

.arrow-down-png {
    width: 100%;
    text-align: center;
    margin-bottom: 50px;

}

.arrow-down-png img {
    width: 50px;
    animation: bounce 1.8s infinite;
    opacity: 0.8;
    filter: drop-shadow(0 0 12px var(--accent-purple-glow));

}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(8px);
    }
}

/* Contenido del curso */
.content-course {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.content-course h2 {
    text-align: center;
    margin-bottom: 50px;
}

.content-course ul {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    align-items: center;
}

.content-course ul li a {
    text-decoration: none;
    display: block;
    transition: all 0.3s ease;
    flex: 1;
}

.content-course ul li a:hover {
    transform: translateY(-4px);
}

.content-course h3 {
    font-size: 30px;
    font-weight: 600;
    text-align: center;
    margin-bottom: 10px;
    color: var(--accent-purple-glow);
    text-shadow: 0 0 14px var(--accent-purple-glow);
    transition: all 0.3s ease;
}

.content-course ul li a:hover h3 {
    letter-spacing: 1px;
}

.content-course span {
    font-size: 15px;
    line-height: 1.5;
    color: var(--text-secondary);
}

/* Duración del curso */
.duration-course {
    text-align: center;
    width: 100%;
    margin: auto;
}

.duration-course h2 {
    margin-bottom: 20px;
}

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

/* Ejemplos reales */
.examples-course {
    max-width: 1200px;
    margin: auto;
    padding: 40px 20px;
    text-align: center;
}

.examples-course h2 {
    margin-bottom: 60px;
}

.examples-row {
    display: flex;
    justify-content: space-between;
    gap: 40px;
    align-items: center;
}

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

.example-item h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--accent-purple-glow);
    text-shadow: 0 0 14px var(--accent-purple-glow);
}

.example-item img {
    width: 100%;
    max-width: 340px;
    border-radius: 12px;
    filter: drop-shadow(0 0 14px rgba(139, 92, 246, 0.4));
    transition: all 0.3s ease;
}

.example-item img:hover {
    transform: translateY(-4px);
    filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.6));
}

.example-item iframe {
    width: 100%;
    max-width: 340px;
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.25);
}


/* Footer */
.footer {
    background-image: linear-gradient(transparent 0% 30%, var(--bg-navbar));
    padding: 40px 20px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 30px;
}

.logo-footer {
    max-width: 1200px;
    width: 100%;
    display: flex;
    justify-content: center;
}

.logo-footer a {
    display: flex;
    align-items: center;
    gap: 40px;
}

.footer .logo-footer img {
    width: 200px;
    opacity: 0.9;
    transition: all 0.3s ease;
    filter: brightness(0) invert(1);
}

.text-footer {
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    max-width: 600px;
}

/* Formulario index */
.form-container {
    background-color: var(--bg-panel);
    max-width: 400px;
    text-align: center;
    display: flex;
    flex-direction: column;
    margin: auto;
}

.form-container h2 {
    margin-bottom: 10px;
}

.form-container h3 {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.form-container input,
.form-container textarea {
    width: 80%;
    padding: 10px;
    margin: 10px auto;
    border: none;
    border-radius: 5px;
    background-color: var(--glass-10);
    color: var(--text-primary);
    font-family: 'Fira code', monospace;

}

.form-container textarea {
    resize: none;
    min-height: 80px;
    max-height: 300px;
}

.form-container input:focus,
.form-container textarea:focus {
    outline: none;
    background-color: var(--glass-20);
    box-shadow: 0 0 10px var(--accent-purple-glow);
}

.form-container button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background-color: var(--accent-purple);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-container button:hover {
    background-color: var(--accent-purple-glow);
    box-shadow: 0 0 20px var(--accent-purple-glow);
}

/* Información de cada unidad */
.divider {
    width: 2px;
    height: 300px;
    background: linear-gradient(transparent 10%, var(--accent-purple), transparent 90%);
    flex-shrink: 0;
}

.info-unidad {
    width: 50%;
    margin: auto;
    padding: 40px 20px;
    text-align: start;
}

.info-unidad h2 {
    margin-bottom: 20px;
    text-align: center;
}


.info-unidad ul li {
    list-style: circle;
}



/* Contenidos por unidad */
.content-unidad {
    max-width: 1200px;
    text-align: left;
    margin: 100px auto;
    display: flex;
    flex-direction: column;
}

.content-unidad h2 {
    text-align: center;
    margin-bottom: 40px;
}

.content-unidad article {
    padding: 30px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.content-unidad article h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.content-unidad article p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.6;
    max-width: 900px;
}

.content-unidad details summary {
    margin-top: 20px;
    font-size: 15px;
    font-weight: 500;
    color: var(--accent-purple-glow);
    cursor: pointer;
    list-style: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.content-unidad details summary:hover {
    text-shadow: 0 0 10px var(--accent-purple-glow);
}

.content-unidad details ul a {
    font-size: 14px;
    color: var(--accent-purple);
    text-decoration: none;
    align-self: flex-start;
    transition: all 0.3s ease;
}

.content-unidad details ul a:hover {
    color: var(--accent-purple-glow);
    text-shadow: 0 0 8px var(--accent-purple-glow);
}

.content-unidad details ul li {
    font-size: 14px;
    color: var(--text-secondary);
}

.content-unidad details ul {
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.content-unidad details[open] summary {
    margin-bottom: 15px;
}

.btn-course {
    max-width: 400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}

.btn-course a {
    padding: 10px 20px;
    background-color: var(--accent-purple);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
}

.btn-course a:hover {
    background-color: var(--accent-purple-glow);
    box-shadow: 0 0 20px var(--accent-purple-glow);
    transform: translateY(-2px);
    transition: all 0.3s ease;
}
/* 
@media (max-width: 768px) {
    .info-main {
        gap: 40px;
    }

    .examples-row {
        gap: 30px;
    }
} */