/* -----------------------------
   PreEntrega1+Aguilar
   CSS inicial, puro, con Flex y Grid
   Mejorado: variables estandarizadas, colores escalables
----------------------------- */

/* -----------------------------
   Variables de color
----------------------------- */
:root {
    --color-primary: #ff6f61;
    --color-primary-hover: #ff3f31;
    --color-secondary: #ff9966;
    --color-background-light: #f2f2f2;
    --color-background-dark: #222222;
    --color-text-dark: #333333;
    --color-text-light: #ffffff;
    --color-text-muted: #555555;
    --color-accent: #ff3f31;
}

/* -----------------------------
   Reset y estilos generales
----------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: var(--color-background-light);
    color: var(--color-text-dark);
    line-height: 1.6;
}

/* Botones personalizados */
.bg-custom {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 8px 15px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s, color 0.3s;
}

.bg-custom:hover {
    background-color: var(--color-primary-hover);
}

.padding-button {
    padding: 10px 15px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s, color 0.3s;
}

/* -----------------------------
   Header / Navegación
----------------------------- */
header {
    background-color: var(--color-background-dark);
    color: var(--color-text-light);
}

/* -----------------------------
   Sección Hero
----------------------------- */
.hero {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    text-align: center;
    padding: 40px 20px;
    height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.hero h2 {
    font-size: 28px;
}

.hero p {
    margin: 10px 0;
}

/* -----------------------------
   Secciones generales
----------------------------- */
section h2 {
    color: var(--color-background-dark);
    margin-bottom: 15px;
    font-size: 22px;
    text-align: center;
}

/* -----------------------------
   Sección Sobre mí
----------------------------- */
.sobre-mi {
    width: 100%;
    padding: 6rem 12rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.sobre-mi h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    text-align: left;
}

.sobre-mi p {
    margin: 0 auto;
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    text-align: left;
}

/* -----------------------------
   Proyectos
----------------------------- */
.proyecto {
    margin-bottom: 20px;
    text-align: center;
}

.proyecto h3 {
    margin: 10px 0 5px;
}

.proyecto a {
    display: inline-block;
}

/* -----------------------------
   Sección Habilidades
----------------------------- */
.skills {
    padding: 4rem 2rem;
    text-align: center;
}

.skills h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.skills-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    list-style: none;
}

.skills-list .list-group-item {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 1rem;
    border-radius: 8px;
    cursor: default;
    transition: transform 0.3s, background-color 0.3s;
}

.skills-list .list-group-item:hover {
    transform: translateY(-5px);
    background-color: var(--color-primary-hover);
}

/* -----------------------------
   Sección Contacto
----------------------------- */
.contacto {
    padding: 4rem 2rem;
}

.contacto h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-form label {
    font-weight: bold;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--color-accent); /* rojo definido en :root */
    outline: none; /* quita el borde azul predeterminado */
    box-shadow: 0 0 0 2px rgba(255, 63, 49, 0.3); /* opcional: halo rojo sutil */
}

.contact-form button {
    padding: 0.75rem;
    border: none;
    border-radius: 6px;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

.contact-form button:hover {
    background-color: var(--color-primary-hover);
}

/* -----------------------------
   Footer
----------------------------- */
.footer {
    background-color: var(--color-background-dark);
    padding: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

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

.social-links a {
    color: var(--color-primary);
    text-decoration: none;
    margin: 0 0.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--color-primary-hover);
}

/* -----------------------------
   Responsive
----------------------------- */
@media (max-width: 768px) {
    .skills-list {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }

    .contact-form {
        padding: 0 1rem;
    }

    .sobre-mi {
        padding: 4rem 1rem;
    }
}

/* -----------------------------
   Detalle del Proyecto
----------------------------- */
.proyecto-detalle {
    display: grid;
    grid-template-areas:
        "titulo"
        "imagen"
        "descripcion"
        "tecnologias"
        "btn";
    grid-gap: 1.5rem;
    max-width: 80vw;
    margin: 2rem auto;
    padding: 4rem 2rem;
    background-color: var(--color-background-light);
    border-radius: 8px;
}

.proyecto-detalle h2 {
    grid-area: titulo;
    font-size: 2rem;
    text-align: center;
    color: var(--color-background-dark);
}

.proyecto-detalle img {
    grid-area: imagen;
    width: 100%;
    height: 201px;
    border-radius: 8px;
    object-fit: cover;
}

.proyecto-detalle p:first-of-type {
    grid-area: descripcion;
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--color-text-muted);
}

.proyecto-detalle p:last-of-type {
    grid-area: tecnologias;
    font-size: 1rem;
    font-weight: bold;
    color: var(--color-text-dark);
}

.proyecto-detalle .btn {
    grid-area: btn;
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-align: center;
    justify-self: center;
    transition: background-color 0.3s;
}

.proyecto-detalle .btn:hover {
    background-color: var(--color-primary-hover);
}

@media (min-width: 768px) {
    .proyecto-detalle {
        grid-template-columns: 1fr 1fr;
        grid-template-areas:
            "titulo titulo"
            "imagen descripcion"
            "imagen tecnologias"
            "btn btn";
        grid-gap: 2rem;
    }

    .proyecto-detalle h2 {
        text-align: left;
    }

    .proyecto-detalle p {
        text-align: left;
    }
}