/* ==========================================================================
   TABLA DE CONTENIDOS
   ==========================================================================
   1.  Variables Globales (Root y Dark Mode)
   2.  Estilos Base (Reset, Body, Tipografía)
   3.  Layout Principal (Sidebar, Main Content)
   4.  Componentes
       - Header
       - Profile Section
       - Social Links
       - Project Cards (Tweet Style)
       - Image Grid
       - Form
   5.  Chatbot
   6.  Footer
   7.  Utilidades (Botones, Scrollbar)
   8.  Media Queries (Responsive Design)
   ========================================================================== */

/* ==========================================================================
   1. Variables Globales (Root y Dark Mode)
   ========================================================================== */
:root {
    --bg-color: #ffffff;
    --text-color-primary: #0F1419;
    --text-color-secondary: #536471;
    --border-color: #EFF3F4;
    --accent-color: #0071C2;
    --accent-color-hover: #005FA3;
    --hover-color: rgba(0, 0, 0, 0.03);
    --header-bg-color: rgba(255, 255, 255, 0.85);
    --profile-img-border: #FFFFFF;
    --message-bg-color: #EFF3F4;
    --scrollbar-thumb: #D6D9DB;
    --scrollbar-thumb-hover: #AAB8C2;
    --logo-color: #0F1419;
    --btn-text-color: #FFFFFF;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #000000;
        --text-color-primary: #E7E9EA;
        --text-color-secondary: #71767B;
        --border-color: #2F3336;
        --hover-color: #16181C;
        --header-bg-color: rgba(0, 0, 0, 0.65);
        --profile-img-border: #000000;
        --message-bg-color: #16181C;
        --scrollbar-thumb: #2F3336;
        --scrollbar-thumb-hover: #71767B;
        --logo-color: #FFFFFF;
        --accent-color: #1D9BF0;
        --accent-color-hover: #1A8CD8;
    }

    .chatbot-header .btn-close {
        filter: invert(1) grayscale(100%) brightness(200%);
    }
}

/* ==========================================================================
   2. Estilos Base (Reset, Body, Tipografía)
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    background-color: var(--bg-color);
}

body {
    background-color: var(--bg-color);
    color: var(--text-color-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    overflow-x: hidden;
    padding-left: 275px;
}

/* ==========================================================================
   3. Layout Principal (Sidebar, Main Content)
   ========================================================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 275px;
    height: 100vh;
    background-color: var(--bg-color);
    border-right: 1px solid var(--border-color);
    padding: 20px;
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-logo {
    font-size: 30px;
    color: var(--logo-color);
    margin-bottom: 30px;
    padding-left: 12px;
}

.sidebar a {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    color: var(--text-color-primary);
    text-decoration: none;
    font-size: 20px;
    font-weight: 400;
    border-radius: 9999px;
    margin-bottom: 8px;
    transition: all 0.2s;
}

.sidebar a:hover {
    background-color: var(--hover-color);
}

.sidebar a i {
    font-size: 26px;
    margin-right: 20px;
    width: 26px;
}

.main-content {
    max-width: 998px;
    padding: 20px 6px;
    min-height: 100vh;
    background-color: var(--bg-color);
}

/* ==========================================================================
   4. Componentes
   ========================================================================== */

/* Header */
.header {
    position: sticky;
    top: 0;
    background-color: var(--header-bg-color);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 8px;
    z-index: 999;
    transition: transform 0.3s ease-in-out;
}

.header.hidden {
    transform: translateY(-100%);
}

.header .header-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-color-primary);
    margin: 0;
}

.section-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--accent-color);
}

#about p {
    font-size: 15px;
    line-height: 20px;
    color: var(--text-color-primary);
}

#about ul {
    list-style-type: '✓';
    padding-left: 20px;
    margin-top: 10px;
    color: var(--text-color-primary);
    /* This will color the checkmark */
}

#about li {
    padding-left: 10px;
    margin-bottom: 5px;
}

/* Tweet Card Style */
.tweet-card {
    border-bottom: 1px solid var(--border-color);
    padding: 16px;
}

/* Profile Section */
.profile-header {
    background-image: url('../img/fondo-p.webp');
    background-size: cover;
    background-position: center;
    height: 160px;
    position: relative;
}

.profile-info {
    padding: 16px;
    position: relative;
}

.profile-actions {
    position: absolute;
    top: 16px;
    right: 16px;
}

.profile-img {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    border: none;
    margin-top: -80px;
    box-sizing: border-box;
    padding: 4px;
    object-fit: cover;
    object-position: center 20%;

}


.profile-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-color-primary);
    margin-top: 12px;
    margin-bottom: 0;
}

.verification-badge {
    color: var(--accent-color);
    font-size: 18px;
    /* Adjust size as needed */
    margin-left: 5px;
    vertical-align: middle;
    /* Align badge with text */
}

.profile-username {
    font-size: 15px;
    color: var(--text-color-secondary);
    margin-bottom: 12px;
}

.profile-bio {
    font-size: 15px;
    color: var(--text-color-primary);
    margin-bottom: 12px;
    line-height: 20px;
}

/* Social Links */
.social-links {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    /* Aumenta el área de clic */
    color: var(--text-color-secondary);
    font-size: 20px;
    transition: all 0.2s;
    border-radius: 50%;
}

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

/* Project Card (Tweet Style) */
.project-card {
    display: flex;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.project-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    margin-right: 10px;
    object-fit: cover;
}

/* Respaldo sin JS de la sección Proyectos (bloque AUTO-GEN de index.html).
   renderProjects() lo borra en cuanto arranca el JS, así que en la práctica
   solo lo ven los rastreadores y quien navegue con JS desactivado: basta con
   que se lea bien y las capturas no desborden. */
.project-fallback {
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.project-fallback h3 {
    font-size: 1.05rem;
    margin-bottom: 8px;
}

.project-fallback img {
    max-width: 100%;
    height: auto;
    margin-top: 8px;
    border-radius: 12px;
}

.project-card-content {
    width: 100%;
}

.project-card-header {
    display: flex;
    align-items: center;
    margin-bottom: 4px;
}

.project-card-header .name {
    font-weight: 700;
    color: var(--text-color-primary);
}

.project-card-header .username {
    color: var(--text-color-secondary);
    margin-left: 4px;
}

.project-card-body .project-card-text {
    color: var(--text-color-primary);
    font-size: 15px;
    line-height: 20px;
    margin-bottom: 12px;
}

/* En escritorio la tarjeta es ancha y la descripción cabe entera: el botón no
   pinta nada. Se enciende solo dentro del media query de móvil. */
.project-text-toggle {
    display: none;
}

/* ====== DESCRIPCIÓN RECORTADA (SOLO MÓVIL) ======
   Descripciones como la de PULSO pasan de 15 líneas en un teléfono y empujan
   las imágenes fuera de la pantalla. Se recortan a 6 líneas con un botón que
   las despliega.
   El recorte cuelga de .project-card-text-wrap, que solo existe en el feed, así
   que el modal sigue mostrando el texto completo sin necesidad de anularlo. */
@media (max-width: 768px) {
    .project-card-text-wrap .project-card-text {
        display: -webkit-box;
        -webkit-box-orient: vertical;
        -webkit-line-clamp: 6;
        line-clamp: 6;
        overflow: hidden;
        margin-bottom: 4px;
    }

    .project-card-text-wrap.expanded .project-card-text {
        -webkit-line-clamp: unset;
        line-clamp: unset;
        overflow: visible;
        margin-bottom: 4px;
    }

    .project-text-toggle {
        display: inline-block;
        margin-bottom: 12px;
        padding: 0;
        border: 0;
        background: none;
        color: var(--accent-color);
        font-family: inherit;
        font-size: 15px;
        line-height: 20px;
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }

    /* Gana al display de arriba: initTextClamps usa el atributo hidden para
       ocultar el botón en las descripciones que no desbordan. */
    .project-text-toggle[hidden] {
        display: none;
    }

    .project-text-toggle:hover {
        text-decoration: underline;
    }

    .project-text-toggle:focus-visible {
        outline: 2px solid var(--accent-color);
        outline-offset: 2px;
        border-radius: 4px;
    }
}

.project-card-body img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    border: 3px solid var(--border-color);
    margin-bottom: 12px;
    object-fit: cover;
}

/* Image Grid Styles */
.project-image-grid {
    display: grid;
    gap: 2px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    margin-bottom: 12px;
}

.project-image-grid .grid-item {
    position: relative;
    overflow: hidden;
}

.project-image-grid .grid-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    margin: 0;
    border-radius: 0;
    border: none;
    transition: transform 0.2s;
}

.project-image-grid .grid-item img:hover {
    transform: scale(1.05);
}

.grid-1 {
    grid-template-columns: 1fr;
    aspect-ratio: 16 / 9;
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
    aspect-ratio: 16 / 8;
}

.grid-3 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    aspect-ratio: 16 / 9;
}

.grid-3 .grid-item:first-child {
    grid-row: span 2;
}

.grid-4 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    aspect-ratio: 16 / 9;
}

/* Los puntos solo guían el swipe del carrusel; en escritorio la cuadrícula ya
   se ve entera y sobran. */
.carousel-dots {
    display: none;
}

/* ============ CARRUSEL (SOLO MÓVIL) ============
   En un teléfono la tarjeta deja ~332px útiles. La cuadrícula de 2 columnas los
   partía por la mitad y object-fit: contain recortaba otra vez lo que quedaba:
   una captura de escritorio acababa dibujándose a ~165x93px, ilegible, y una de
   móvil a ~83px de ancho entre dos barras negras. Aquí la misma cuadrícula pasa
   a ser un carrusel: una imagen a la vez, a ancho completo.
   Va después de .grid-1..4 a propósito: comparte especificidad con ellas, así
   que solo gana si carga al final. */
@media (max-width: 768px) {
    .project-media {
        position: relative;
    }

    .grid-1,
    .grid-2,
    .grid-3,
    .grid-4 {
        display: flex;
        grid-template-columns: none;
        /* El alto lo fija el carrusel; la proporción de la cuadrícula ya no manda. */
        aspect-ratio: auto;
        height: clamp(280px, 55vh, 420px);
        gap: 0;
        overflow-x: auto;
        /* Evita que el swipe al final del carrusel arrastre la página detrás. */
        overscroll-behavior-x: contain;
        scroll-snap-type: x mandatory;
        /* Firefox oculta la barra con scrollbar-width; WebKit necesita la
           pseudo-clase de abajo. Hacen falta las dos. */
        scrollbar-width: none;
    }

    .project-image-grid::-webkit-scrollbar {
        display: none;
    }

    .project-image-grid .grid-item {
        flex: 0 0 100%;
        scroll-snap-align: center;
        display: flex;
        align-items: center;
        justify-content: center;
        /* Sin fondo propio: las capturas verticales dejan hueco a los lados y
           debe verse el fondo de la página, igual que en escritorio. Teñirlo
           dibujaba un recuadro gris alrededor de cada imagen. */
    }

    /* .grid-3 estiraba su primera celda dos filas; en flex no aplica. */
    .grid-3 .grid-item:first-child {
        grid-row: auto;
    }

    /* Sin position: absolute la imagen recupera su tamaño natural y solo se
       limita a la caja, sin estirarse ni recortarse. */
    .project-image-grid .grid-item img {
        position: static;
        width: auto;
        height: auto;
        max-width: 100%;
        max-height: 100%;
    }

    /* No hay hover en táctil: el scale solo estorbaba al arrastrar. */
    .project-image-grid .grid-item img:hover {
        transform: none;
    }

    .carousel-dots {
        position: absolute;
        bottom: 8px;
        left: 0;
        right: 0;
        display: flex;
        justify-content: center;
        gap: 6px;
        /* El swipe manda: los puntos no deben interceptarlo. */
        pointer-events: none;
    }

    .carousel-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        /* Gris medio en ambos temas: los puntos se apoyan en el fondo de la
           página, así que un blanco fijo desaparecía en tema claro. */
        background-color: var(--text-color-secondary);
        transition: background-color 0.2s ease, transform 0.2s ease;
    }

    .carousel-dot.active {
        background-color: var(--accent-color);
        transform: scale(1.3);
    }
}

@media (prefers-reduced-motion: reduce) {
    .carousel-dot {
        transition: none;
    }
}

.project-card-footer {
    display: flex;
    justify-content: space-between;
    max-width: 425px;
    margin-top: 12px;
}

.project-card-footer .action {
    display: flex;
    align-items: center;
    color: var(--text-color-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
    padding: 8px;
    /* Aumenta el área de clic */
    margin: -8px;
    /* Compensa el padding para no afectar el layout */
    border-radius: 50%;
}

.project-card-footer .action i {
    font-size: 18px;
    margin-right: 8px;
}

.project-card-footer .action:hover {
    color: var(--accent-color);
    background-color: rgba(29, 155, 240, 0.1);
}

/* Like Animation */
@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-20px);
    }

    60% {
        transform: translateY(-10px);
    }
}

.like-action .bi-heart-fill {
    display: none;
}

.like-action .bi-heart {
    display: inline-block;
}

.like-action.liked .bi-heart {
    display: none;
}

.like-action.liked .bi-heart-fill {
    display: inline-block;
    color: #E0245E;
    /* Twitter's like color */
    animation: bounce 1s ease;
}

/* Form Style */
.form-control {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color-primary);
    border-radius: 4px;
    padding: 12px;
    font-size: 15px;
}

.form-control:focus {
    background-color: var(--bg-color);
    border-color: var(--accent-color);
    color: var(--text-color-primary);
    box-shadow: none;
}

/* Sin esto hereda el placeholder de Bootstrap, casi negro sobre el fondo
   oscuro. opacity:1 neutraliza el aclarado que Firefox aplica por defecto. */
.form-control::placeholder {
    color: var(--text-color-secondary);
    opacity: 1;
}

.form-label {
    color: var(--text-color-primary);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
}

/* ==========================================================================
   5. Chatbot
   ========================================================================== */
.chatbot-icon {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(29, 156, 240, 0);
    transition: all 0.3s;
    z-index: 1000;
}

.chatbot-icon.hidden {
    opacity: 0;
    transform: scale(0.5);
    pointer-events: none;
}

.chatbot-icon:hover {
    transform: scale(1.1);
    background-color: var(--accent-color-hover);
}

.chatbot-icon i {
    font-size: 30px;
    color: var(--btn-text-color);
}

.chatbot-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(91, 112, 122, 0.4);
    z-index: 1000;
    display: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.chatbot-overlay.show {
    display: block;
    opacity: 1;
}

.chatbot-window {
    position: fixed;
    bottom: 100px;
    right: 20px;
    width: 370px;
    max-width: calc(100vw - 40px);
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    z-index: 1001;
    display: none;
    flex-direction: column;
    transition: opacity 0.3s, transform 0.3s;
    opacity: 0;
    transform: translateY(20px);
}

.chatbot-window.show {
    display: flex;
    opacity: 1;
    transform: translateY(0);
}

.chatbot-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.chatbot-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-color-primary);
    margin: 0;
}

.chatbot-body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    height: 400px;
}

.chatbox {
    flex-grow: 1;
    overflow-y: auto;
    margin-bottom: 16px;
}

.message-content {
    background-color: var(--message-bg-color);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 12px;
    color: var(--text-color-primary);
    font-size: 15px;
}

/* ==========================================================================
   6. Footer
   ========================================================================== */
footer {
    background-color: var(--bg-color);
    border-top: 1px solid var(--border-color);
    padding: 20px;
    text-align: center;
    color: var(--text-color-secondary);
    font-size: 13px;
}

/* ==========================================================================
   7. Utilidades (Botones, Scrollbar)
   ========================================================================== */
.btn.btn-x {
    background-color: var(--accent-color);
    color: var(--btn-text-color);
    border: none;
    border-radius: 9999px;
    padding: 12px 22px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.2px;
    transition: background-color 0.2s;
}

.btn.btn-x:hover {
    background-color: var(--accent-color-hover);
    color: var(--btn-text-color);
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Timeline Item for Experience Section */
.timeline-item {
    position: relative;
    padding-bottom: 20px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.timeline-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.timeline-item strong {
    font-weight: 700;
    color: var(--text-color-primary);
}

.timeline-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-color-primary);
    margin-bottom: 8px;
}

.timeline-item time,
.timeline-item span[itemprop="jobLocation"] {
    font-size: 14px;
    color: var(--text-color-secondary);
}

.timeline-item em {
    font-size: 14px;
    color: var(--text-color-secondary);
}

.timeline-item ul {
    list-style-type: '✓';
    padding-left: 20px;
    margin-top: 10px;
}

.timeline-item li {
    padding-left: 10px;
    margin-bottom: 5px;
    color: var(--text-color-primary);
}

.highlight {
    color: var(--accent-color);
}

/* ==========================================================================
   8. Media Queries (Responsive Design)
   ========================================================================== */
@media (max-width: 1024px) {
    body {
        padding-left: 88px;
    }

    .sidebar {
        width: 88px;
    }

    .sidebar a span {
        display: none;
    }

    .sidebar a {
        justify-content: center;
        padding: 12px;
    }

    .sidebar a i {
        margin-right: 0;
    }
}

/* Al navegar por anclas, deja aire para el header sticky (~44px). */
section[id] {
    scroll-margin-top: 60px;
}

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

/* ==========================================================================
   Tab bar móvil — sustituye al sidebar por debajo de 768px
   ========================================================================== */

/* Oculta en escritorio: ahí navega el sidebar. */
.tabbar {
    display: none;
}

@media (max-width: 768px) {
    body {
        padding-left: 0;
        /* Reserva el alto de la tabbar para que el footer no quede debajo. */
        padding-bottom: calc(60px + env(safe-area-inset-bottom, 0px));
    }

    .sidebar {
        display: none;
    }

    .tabbar {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        /* Mismo material que el header: translúcido + blur. */
        background-color: var(--header-bg-color);
        backdrop-filter: blur(12px);
        border-top: 1px solid var(--border-color);
        /* Respeta la barra de gestos del iPhone. */
        padding-bottom: env(safe-area-inset-bottom, 0px);
        z-index: 999;
        /* Misma curva y duración que el header, para que el chrome se aparte a la vez. */
        transition: transform 0.3s ease-in-out, opacity 0.3s ease-in-out;
    }

    /* Se aparta al bajar; main.js la devuelve al subir o al detenerse el scroll.
       Baja en vez de encoger: el scale(0.5) del FAB solo funciona en un círculo. */
    .tabbar.hidden {
        transform: translateY(100%);
        opacity: 0;
        pointer-events: none;
    }

    .tabbar a {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 3px;
        padding: 8px 2px;
        min-height: 52px;
        text-decoration: none;
        color: var(--text-color-secondary);
        transition: color 0.2s ease;
        -webkit-tap-highlight-color: transparent;
    }

    .tabbar a i {
        font-size: 1.25rem;
        line-height: 1;
    }

    .tabbar a span {
        font-size: 0.625rem;
        letter-spacing: -0.1px;
        line-height: 1;
    }

    .tabbar a.active {
        color: var(--accent-color);
    }

    .tabbar a:focus-visible {
        outline: 2px solid var(--accent-color);
        outline-offset: -2px;
        border-radius: 4px;
    }

    /* El FAB del chatbot sube para no solaparse con la tabbar. */
    .chatbot-icon {
        bottom: calc(76px + env(safe-area-inset-bottom, 0px));
    }
}

@media (prefers-reduced-motion: reduce) {
    .tabbar,
    .tabbar a {
        transition: none;
    }
}

/* Media query para mejorar la responsividad del chatbot en móviles */
@media (max-width: 500px) {
    .chatbot-window {
        /* Lo hacemos casi de ancho completo y lo centramos */
        left: 10px;
        right: 10px;
        width: auto;

        /* Lo bajamos un poco para que no esté tan alto */
        bottom: 80px;

        /* Evitamos que ocupe toda la altura en pantallas muy pequeñas */
        max-height: 80vh;
    }

    .chatbot-body {
        /* La altura se ajustará automáticamente al contenido y al max-height */
        height: auto;
        min-height: 300px;
        /* Aseguramos una altura mínima razonable */
    }
}

/* Notification Style */
.notification {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-color);
    color: var(--btn-text-color);
    padding: 12px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    transform: translate(-50%, 20px);
}

.notification.show {
    opacity: 1;
    transform: translate(-50%, 0);
}

/* ==========================================================================
   9. Reposicionamiento AI-Native
   ========================================================================== */

/* Botones del perfil más compactos */
.profile-actions .btn-x,
.profile-actions .btn-x-outline {
    padding: 6px 14px;
    font-size: 0.82rem;
}

/* CTA outline (Hire me) */
.btn-x-outline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.9rem;
    border: 1.5px solid var(--text-color-primary);
    color: var(--text-color-primary);
    background: transparent;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
}
.btn-x-outline:hover {
    background: var(--text-color-primary);
    color: var(--bg-color);
}

/* Pill de disponibilidad */
.profile-availability {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.82rem;
    color: var(--text-color-secondary);
    margin-bottom: 10px;
}
.availability-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    flex-shrink: 0;
    animation: pulse-availability 2s infinite;
}
@keyframes pulse-availability {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(1.3); }
}

/* Stack chips */
.stack-group {
    margin-bottom: 16px;
}
.stack-group-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-color-primary);
    margin-bottom: 8px;
}
.stack-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.chip {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
    border: 1px solid var(--text-color-secondary);
    color: var(--text-color-primary);
    background: transparent;
}
.chip-ai {
    background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(139,92,246,0.15));
    border-color: rgba(139,92,246,0.6);
    color: #a78bfa;
}
.stack-note {
    font-size: 0.78rem;
    color: var(--text-color-secondary);
    font-family: 'JetBrains Mono', monospace;
    margin-top: 8px;
    margin-bottom: 0;
}

/* Intro de contacto */
.contact-intro {
    color: var(--text-color-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

/* Responsive ajustes */
@media (max-width: 768px) {
    .profile-actions {
        display: flex;
        gap: 8px;
        flex-wrap: wrap;
    }
    .profile-actions .btn-x-outline {
        display: none;
    }
    .stack-chips {
        gap: 6px;
    }
    .chip {
        font-size: 0.75rem;
        padding: 3px 10px;
    }
}