/* =========================================================
   SISTEMA DE DISEÑO — Dark Tech / Developer
   Un solo lugar define los colores (variables). El modo claro
   solo cambia el VALOR de esas variables, no cada regla.
   ========================================================= */

*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    scroll-margin-top: 80px;
}

:root{
    /* Tipografías */
    --font-body: 'Rubik', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Paleta — TEMA OSCURO (por defecto) */
    --bg:         #0a0e17;
    --bg-grad:    radial-gradient(1200px 600px at 70% -10%, #14203a 0%, transparent 60%), #0a0e17;
    --surface:    #111826;
    --surface-2:  #161f30;
    --border:     #232c3f;
    --text:       #e6edf3;
    --text-muted: #8b98ac;

    --accent:      #2dd4bf;   /* teal neón, color de marca */
    --accent-2:    #38bdf8;   /* celeste, para gradientes */
    --accent-soft: rgba(45, 212, 191, .12);
    --accent-line: rgba(45, 212, 191, .35);

    --gold:   #ffd13b;   /* notas 10/10, 9/10 */
    --green:  #3fb950;   /* "en producción" */
    --purple: #a371f7;   /* APIs / JWT */
    --danger: #ff6b6b;

    --shadow: 0 10px 30px -12px rgba(0,0,0,.55);
    --radius: 14px;
}

/* TEMA CLARO — solo redefine variables */
body.dark__mode{
    --bg:         #f4f6fb;
    --bg-grad:    radial-gradient(1000px 500px at 75% -10%, #dbe7ff 0%, transparent 60%), #f4f6fb;
    --surface:    #ffffff;
    --surface-2:  #eef2f9;
    --border:     #d9e0ec;
    --text:       #16202e;
    --text-muted: #5b6a80;

    --accent:      #0d9488;
    --accent-2:    #0284c7;
    --accent-soft: rgba(13, 148, 136, .10);
    --accent-line: rgba(13, 148, 136, .30);

    --shadow: 0 10px 30px -14px rgba(20,40,80,.25);
}

html{ scroll-behavior: smooth; }

body{
    font-family: var(--font-body);
    background: var(--bg-grad);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
    transition: background .5s ease, color .5s ease;
    overflow-x: hidden;
}

section{ padding: 90px 20px; }

/* ---------- Campo de estrellas de fondo ---------- */
.space{
    --size: 2px;
    --space-layer: 4vw 50vh 0 #fff;
    width: var(--size);
    height: var(--size);
    background: white;
    box-shadow: var(--space-layer);
    position: fixed;
    top: 0; left: 0;
    opacity: .6;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    animation: move var(--duration, 25s) linear infinite;
}
@keyframes move{ from{ transform: translateY(0);} to{ transform: translateY(-100vh);} }
body.dark__mode .space{ opacity: 0; }   /* en modo claro las estrellas molestan */

/* asegura que el contenido quede por encima del fondo */
header, section, footer{ position: relative; z-index: 1; }

/* =========================================================
   BOTONES reutilizables
   ========================================================= */
.btn{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
}
.btn--primary{
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #06131a;
}
.btn--primary:hover{
    transform: translateY(-2px);
    box-shadow: 0 8px 22px -6px var(--accent-line);
}
.btn--ghost{
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent-line);
}
.btn--ghost:hover{
    background: var(--accent-soft);
    transform: translateY(-2px);
}
.btn--sm{ padding: 8px 14px; font-size: 13px; }

/* =========================================================
   NAV
   ========================================================= */
.contenedor-header{
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.main-nav{
    max-width: 1150px;
    margin: 0 auto;
    height: 62px;
    padding: 0 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand{
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 20px;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 1px;
}
.main-menu{
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
}
.main-menu__link{
    color: var(--text-muted);
    font-size: 15px;
    font-weight: 500;
    padding: 10px 14px;
    text-decoration: none;
    border-radius: 8px;
    transition: color .25s ease, background .25s ease;
}
.main-menu__link:hover{ color: var(--accent); background: var(--accent-soft); }

.nav-tools{ display: flex; align-items: center; gap: 12px; margin-left: 10px; }
#button__dark-mode{
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    transition: color .25s ease;
}
#button__dark-mode:hover{ color: var(--gold); }
#button__dark-mode .light-mode-icon{ display: none; }
.dark__mode #button__dark-mode .light-mode-icon{ display: block; }
.dark__mode #button__dark-mode .dark-mode-icon{ display: none; }

.flags{ display: flex; gap: 6px; }
.flags__item{ width: 26px; cursor: pointer; opacity: .7; transition: opacity .2s, transform .2s; }
.flags__item:hover{ opacity: 1; transform: scale(1.1); }
.flags__item img{ width: 100%; display: block; border-radius: 3px; }

.nav-responsive{
    display: none;
    color: var(--text);
    font-size: 22px;
    cursor: pointer;
    padding: 6px 10px;
}

/* =========================================================
   HERO
   ========================================================= */
.home{
    min-height: 100vh;
    max-width: 1150px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.1fr .9fr;
    align-items: center;
    gap: 40px;
    padding-top: 90px;
}
.eyebrow{
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 15px;
    margin-bottom: 14px;
}
.home__name{
    font-size: clamp(38px, 6vw, 66px);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -1px;
}
.home__role{
    font-size: clamp(20px, 3vw, 30px);
    font-weight: 600;
    color: var(--text-muted);
    margin-top: 8px;
}
.home__role::after{ content: "_"; color: var(--accent); animation: blink 1.1s steps(1) infinite; }
@keyframes blink{ 50%{ opacity: 0; } }

.home__tagline{
    color: var(--text-muted);
    font-size: 17px;
    max-width: 560px;
    margin-top: 22px;
}
.home__cta{ display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }
.redes{ display: flex; gap: 22px; margin-top: 34px; }
.redes a{
    color: var(--text-muted);
    font-size: 30px;
    text-decoration: none;
    transition: color .25s ease, transform .25s ease;
}
.redes a:hover{ color: var(--accent); transform: translateY(-3px); }

/* Tarjeta terminal */
.home__terminal{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    font-family: var(--font-mono);
}
.terminal__bar{
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
}
.dot{ width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot--red{ background: #ff5f56; }
.dot--yellow{ background: #ffbd2e; }
.dot--green{ background: #27c93f; }
.terminal__title{ margin-left: 10px; color: var(--text-muted); font-size: 13px; }
.terminal__body{
    padding: 22px;
    font-size: 14px;
    line-height: 1.9;
    color: var(--text);
    white-space: pre-wrap;
}
.c-key{ color: var(--purple); }
.c-str{ color: var(--accent); }
.c-num{ color: var(--gold); }
.c-bool{ color: var(--accent-2); }
.c-brace{ color: var(--text-muted); }

/* =========================================================
   ETIQUETAS DE SECCIÓN
   ========================================================= */
.section-eyebrow{
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 14px;
    text-align: center;
    margin-bottom: 8px;
}
.titulo-seccion, .portfolio-title{
    font-size: clamp(30px, 4vw, 42px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    letter-spacing: -.5px;
}

/* =========================================================
   SOBRE MÍ
   ========================================================= */
.contenido-seccion{ max-width: 820px; margin: 0 auto; text-align: center; }
.contenido-seccion h2{
    font-size: clamp(30px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 26px;
}
.description{
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.8;
}

/* =========================================================
   HABILIDADES
   ========================================================= */
.skills-groups{
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
}
.skill-card{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.skill-card:hover{
    transform: translateY(-4px);
    border-color: var(--accent-line);
    box-shadow: var(--shadow);
}
.skill-card__title{
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    margin-bottom: 18px;
    color: var(--text);
}
.skill-card__title i{ color: var(--accent); font-size: 22px; }
.skill-tags{ list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tags li{
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--accent-soft);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--accent-line);
}

/* =========================================================
   PROYECTOS
   ========================================================= */
.galeria--featured{
    max-width: 1150px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 26px;
}
.proyecto--featured{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.proyecto--featured:hover{
    transform: translateY(-6px);
    border-color: var(--accent-line);
    box-shadow: var(--shadow);
}
.proyecto__media{
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--surface-2), var(--surface));
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.proyecto__media img{
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    display: block;
    transition: transform .4s ease;
}
.proyecto--featured:hover .proyecto__media img{ transform: scale(1.05); }
/* Fallback (icono) cuando no hay imagen o falla al cargar */
.proyecto__fallback{
    display: none;
    font-size: 64px;
    color: var(--accent);
    opacity: .5;
}
.proyecto__media.no-img .proyecto__fallback{ display: block; }
.proyecto__media.no-img{
    background: radial-gradient(circle at 50% 40%, var(--accent-soft), var(--surface));
}

.proyecto__body{ padding: 22px; display: flex; flex-direction: column; flex: 1; }
.proyecto__badges{ display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.badge{
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--surface-2);
    color: var(--text-muted);
    border: 1px solid var(--border);
}
.badge--gold{ color: var(--gold); border-color: color-mix(in srgb, var(--gold) 40%, transparent); background: color-mix(in srgb, var(--gold) 12%, transparent); }
.badge--green{ color: var(--green); border-color: color-mix(in srgb, var(--green) 40%, transparent); background: color-mix(in srgb, var(--green) 12%, transparent); }
.badge--purple{ color: var(--purple); border-color: color-mix(in srgb, var(--purple) 40%, transparent); background: color-mix(in srgb, var(--purple) 12%, transparent); }

.proyecto__body h3{ font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.proyecto__desc{ color: var(--text-muted); font-size: 14.5px; line-height: 1.7; margin-bottom: 16px; }
.stack{ list-style: none; display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 18px; margin-top: auto; }
.stack li{
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-muted);
    background: var(--surface-2);
    padding: 4px 10px;
    border-radius: 6px;
    border: 1px solid var(--border);
}
.proyecto__links{ display: flex; gap: 10px; flex-wrap: wrap; }

/* Otros proyectos */
.portfolio-subtitle{
    text-align: center;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-muted);
    margin: 70px 0 30px;
}
.galeria--minor{
    max-width: 780px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.mini-proyecto{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 18px;
    text-align: center;
    text-decoration: none;
    color: var(--text);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    transition: transform .25s ease, border-color .25s ease;
}
.mini-proyecto:hover{ transform: translateY(-4px); border-color: var(--accent-line); }
.mini-proyecto i{ font-size: 34px; color: var(--accent); }
.mini-proyecto__name{ font-weight: 600; font-size: 15px; }
.mini-proyecto__tech{ font-family: var(--font-mono); font-size: 12px; color: var(--text-muted); }

/* =========================================================
   CONTACTO
   ========================================================= */
.contacto{ text-align: center; }
.fila__contact{
    display: flex;
    max-width: 820px;
    margin: 0 auto 40px;
    justify-content: center;
    gap: 26px;
    flex-wrap: wrap;
}
.contacto-data{
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 30px;
    width: 320px;
    cursor: pointer;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.contacto-data:hover{ transform: translateY(-4px); border-color: var(--accent-line); box-shadow: var(--shadow); }
.contacto-data .icono{
    display: inline-flex;
    width: 72px; height: 72px;
    border-radius: 50%;
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
    align-items: center; justify-content: center;
    padding: 18px;
    margin-bottom: 14px;
}
.contacto-data .icono img{ width: 100%; }
.contacto-data h4{ color: var(--text-muted); font-size: 14px; margin-bottom: 8px; font-weight: 500; }
.contacto-data a{ color: var(--accent); text-decoration: none; font-weight: 600; font-size: 16px; word-break: break-word; }

/* Formulario */
.contact__container{
    display: flex;
    flex-direction: column;
    max-width: 620px;
    margin: 0 auto;
    padding: 34px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-align: left;
}
.contact__title{ font-size: 20px; margin-bottom: 22px; text-align: center; font-weight: 600; }
.contact__container label{ margin-top: 16px; margin-bottom: 6px; font-size: 14px; color: var(--text-muted); }
.contact__container input,
.contact__container textarea{
    width: 100%;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 11px 14px;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 15px;
    transition: border-color .25s ease, box-shadow .25s ease;
}
.contact__container textarea{ height: 130px; resize: vertical; }
.contact__container input:focus,
.contact__container textarea:focus{
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
input.invalid, textarea.invalid{ border-color: var(--danger) !important; }
.error-msg{ color: var(--danger); font-size: 13px; margin-top: 5px; display: none; }
.send__input{
    width: auto;
    align-self: flex-start;
    margin-top: 22px;
    padding: 12px 30px;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #06131a;
    font-weight: 700;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease;
}
.send__input:hover{ transform: translateY(-2px); box-shadow: 0 8px 22px -6px var(--accent-line); }

/* =========================================================
   FOOTER
   ========================================================= */
footer{
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    padding: 40px 20px;
    border-top: 1px solid var(--border);
}
.link__git{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 15px;
    text-decoration: none;
    border-radius: 10px;
    transition: color .25s ease, border-color .25s ease;
}
.link__git:hover{ color: var(--accent); border-color: var(--accent-line); }
.arrow_btn{
    background: transparent;
    border: none;
    color: var(--accent);
    font-size: 30px;
    cursor: pointer;
    display: flex;
    transition: transform .25s ease;
}
.arrow_btn:hover{ transform: translateY(-3px); }

/* =========================================================
   ANIMACIÓN DE APARICIÓN AL HACER SCROLL
   ========================================================= */
.reveal{
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .6s ease, transform .6s ease;
}
.reveal.visible{ opacity: 1; transform: none; }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media screen and (max-width: 900px){
    .home{ grid-template-columns: 1fr; text-align: center; gap: 30px; padding-top: 110px; min-height: auto; }
    .home__tagline{ margin-left: auto; margin-right: auto; }
    .home__cta, .redes{ justify-content: center; }
    .home__terminal{ max-width: 480px; margin: 0 auto; width: 100%; }
    .skills-groups{ grid-template-columns: 1fr; }
    .galeria--featured{ grid-template-columns: 1fr; }
}

@media screen and (max-width: 768px){
    section{ padding: 70px 18px; }

    .nav-responsive{ display: block; }
    .main-menu{
        position: fixed;
        top: 62px;
        right: 0;
        width: 70%;
        max-width: 300px;
        min-height: calc(100vh - 62px);
        flex-direction: column;
        justify-content: center;
        gap: 10px;
        padding: 30px;
        background: color-mix(in srgb, var(--bg) 96%, transparent);
        backdrop-filter: blur(14px);
        border-left: 1px solid var(--border);
        transform: translateX(110%);
        transition: transform .45s ease;
    }
    .menu_show{ transform: translateX(0); }
    .main-menu__link{ font-size: 18px; }
    .nav-tools{ margin-top: 20px; }
}

@media screen and (max-width: 560px){
    .galeria--minor{ grid-template-columns: 1fr; }
    .fila__contact{ flex-direction: column; align-items: center; }
    .contacto-data{ width: 100%; max-width: 340px; }
    .home__name{ font-size: 40px; }
    .terminal__body{ font-size: 12.5px; }
}