.btn-lang {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 7px 14px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.btn-lang:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(56, 189, 248, 0.12);
    box-shadow: 0 0 15px var(--accent-glow);
}

.profile-sidebar {
    background-color: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 35px 28px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden; 
}

.profile-sidebar:hover {
    border-color: var(--border-glow);
    background-color: var(--card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
}

.profile-avatar-container {
    width: 130px;
    height: 130px;
    margin: 0 auto 20px auto;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--accent);
    box-shadow: 0 0 30px var(--accent-glow);
    position: relative;
    transition: var(--transition);
}

.profile-sidebar:hover .profile-avatar-container {
    border-color: var(--border-glow);
    box-shadow: 0 0 40px var(--accent-glow);
}

.profile-avatar-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.profile-avatar-container:hover img {
    transform: scale(1.06);
}

.profile-name {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 6px;
    letter-spacing: -0.3px;
}

.profile-role {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 22px;
    letter-spacing: 0.2px;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 8px;
    font-size: 1.2rem;
}

.social-icons a {
    color: var(--text-muted);
    background: rgba(30, 41, 59, 0.5);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.social-icons a i {
    transition: var(--transition);
}

.social-icons a::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
}

.social-icons a:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: rgba(56, 189, 248, 0.12);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 0 20px var(--accent-glow), inset 0 0 10px rgba(56, 189, 248, 0.2);
}

.social-icons a:hover i {
    transform: scale(1.15);
}

.social-icons a:hover::before {
    opacity: 1;
}

.hero-content {
    background-color: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 45px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden; 
}

.hero-content:hover {
    border-color: var(--border-glow);
    background-color: var(--card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
}

.hero-content h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2.3rem;
    font-weight: 800;
    letter-spacing: -1.2px;
    margin-bottom: 18px;
    color: var(--text-main);
    text-align: left;
}

.hero-content p {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 18px;
}

.btn-cv {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background-color: var(--accent);
    color: #070913;
    padding: 13px 24px;
    border-radius: 9999px;
    text-decoration: none;
    font-weight: 700;
    font-size: 0.95rem;
    transition: var(--transition);
    margin-top: 10px;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
    width: fit-content;
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
    cursor: pointer;
}

.btn-cv::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 9999px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.btn-cv:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 0 25px var(--accent-glow), 0 8px 25px rgba(56, 189, 248, 0.5);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-cv:hover::after {
    opacity: 1;
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.card {
    background-color: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.card::before, .project-card::before, .contact-grid::before, .hero-content::before, .profile-sidebar::before {
    content: '';
    position: absolute;
    top: var(--y, 0);
    left: var(--x, 0);
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

.card:hover::before, .project-card:hover::before, .contact-grid:hover::before, .hero-content:hover::before, .profile-sidebar:hover::before {
    opacity: 1;
}

.card > *, .project-card > *, .contact-grid > *, .hero-content > *, .profile-sidebar > * {
    position: relative;
    z-index: 2;
}

.card:hover {
    border-color: var(--border-glow);
    background-color: var(--card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 16px 35px rgba(0, 0, 0, 0.45);
}

.card-flex-start {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    height: 100%;
}

.card-space-between {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 26px;
    height: 100%;
}

.experience-item {
    margin-bottom: 26px;
}

.experience-item-flush {
    margin-bottom: 0;
}

.experience-item-bordered {
    border-top: 1px solid var(--border-color);
    padding-top: 22px;
    margin-bottom: 0;
}

.experience-title {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: left;
    margin-bottom: 2px;
}

.experience-company {
    color: var(--accent);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
    text-align: left;
}

.experience-date {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    text-align: left;
    font-weight: 500;
}

.experience-desc {
    font-size: 0.92rem;
    color: var(--text-muted);
    padding-left: 18px;
    margin: 0;
}

.experience-desc li {
    margin-bottom: 8px;
}

.project-card {
    background-color: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 35px;
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 35px;
    align-items: center;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.project-card:hover {
    border-color: var(--border-glow);
    background-color: var(--card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
}

.project-info h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text-main);
    text-align: left;
    letter-spacing: -0.5px;
}

.project-desc {
    color: var(--text-muted); 
    font-size: 0.95rem; 
    margin-bottom: 14px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 18px 0;
}

.tech-tag {
    background-color: rgba(56, 189, 248, 0.08);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 9999px;
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid rgba(56, 189, 248, 0.25);
    transition: var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-card:hover .tech-tag {
    border-color: var(--border-glow);
}

.tech-tag:hover {
    background-color: rgba(56, 189, 248, 0.18);
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 0 15px var(--accent-glow);
    color: #ffffff;
}

.project-link {
    color: var(--accent); 
    text-decoration: none; 
    font-weight: 600; 
    font-size: 0.9rem; 
    display: inline-flex; 
    align-items: center; 
    gap: 8px; 
    transition: var(--transition);
}

.project-link:hover {
    color: #ffffff;
}

.project-screenshot-container {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    position: relative;
    transition: var(--transition);
    width: 100%;
    aspect-ratio: 16 / 11;
}

.project-screenshot-container::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(7, 9, 19, 0.4) 100%);
    opacity: 0.5;
    transition: var(--transition);
    pointer-events: none;
    z-index: 5;
}

.project-screenshot-container:hover {
    border-color: var(--border-glow);
    box-shadow: 0 12px 30px var(--accent-glow);
}

.img-carousel-track {
    display: flex;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    width: 100%;
    height: 100%;
}

.img-carousel-track .project-screenshot {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    transition: var(--transition);
}

.project-screenshot-container:hover .project-screenshot {
    transform: scale(1.04);
}

.img-carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(7, 9, 19, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--text-main);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    backdrop-filter: blur(4px);
}

.img-carousel-btn:hover:not(:disabled) {
    background-color: var(--accent);
    color: #070913;
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.img-carousel-btn:disabled {
    opacity: 0;
    pointer-events: none;
}

.prev-btn { left: 8px; }
.next-btn { right: 8px; }

.card-header-title {
    font-family: 'Plus Jakarta Sans', sans-serif; 
    font-size: 1.15rem; 
    font-weight: 700; 
    margin-bottom: 24px; 
    color: var(--text-main); 
    text-align: left; 
    display: flex; 
    align-items: center; 
    gap: 10px;
}

.card-inner-stack {
    display: flex; 
    flex-direction: column; 
    gap: 24px;
}

.stack-item-title {
    font-size: 0.98rem; 
    color: var(--text-main); 
    font-weight: 600; 
    display: flex; 
    align-items: center; 
    gap: 8px; 
    margin-bottom: 4px;
}

.stack-item-desc {
    font-size: 0.87rem; 
    color: var(--text-muted); 
    text-align: left; 
    margin: 0;
}

.edu-accent-item {
    border-left: 3px solid var(--accent);
    padding-left: 16px;
    position: relative;
    transition: var(--transition);
}

.edu-accent-item::before {
    content: '';
    position: absolute;
    left: -3px;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    opacity: 0.8;
    transition: var(--transition);
}

.edu-accent-item:hover {
    transform: translateX(3px);
}

.edu-accent-item:hover::before {
    box-shadow: 0 0 18px var(--accent);
    opacity: 1;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    background-color: var(--card-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 50px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.4);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.contact-grid:hover {
    border-color: var(--border-glow);
    background-color: var(--card-hover-bg);
    transform: translateY(-4px);
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
}

.contact-text h2 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2.1rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 16px;
    color: var(--text-main);
    text-align: left;
    line-height: 1.25;
}

.contact-text p {
    color: var(--text-muted);
    font-size: 1.05rem;
    text-align: left;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: relative;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    background-color: rgba(7, 9, 19, 0.85);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 15px 18px;
    color: var(--text-main);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-glow);
    background-color: rgba(15, 23, 42, 0.95);
}

.contact-form input:user-invalid,
.contact-form textarea:user-invalid {
    border-color: #f43f5e;
    box-shadow: 0 0 0 3px rgba(244, 63, 94, 0.15);
}

.contact-form input:user-valid,
.contact-form textarea:user-valid {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.12);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

.contact-form textarea {
    min-height: 140px;
}

.btn-submit {
    background-color: var(--accent);
    color: #070913;
    border: 1px solid transparent;
    border-radius: 9999px;
    padding: 15px 22px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.35);
    position: relative;
    overflow: hidden;
}

.btn-submit::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 9999px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.btn-submit:hover {
    background-color: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 0 25px var(--accent-glow), 0 8px 25px rgba(56, 189, 248, 0.5);
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-submit:hover::after {
    opacity: 1;
    animation: shimmer 1.5s infinite;
}

.form-success-message {
    display: none;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid #10b981;
    color: #34d399;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Utilidades (antes eran estilos inline en el HTML) */
.stack-icon { color: var(--accent); font-size: 0.85rem; }
.stack-icon--lg { font-size: 1rem; }
.stack-item-desc--spaced { margin-top: 3px; }
.project-actions { margin-top: 20px; }
.project-link__icon { font-size: 1.1rem; }

/* Tarjeta de perfil: stack y datos de contacto */
.profile-stack { justify-content: center; flex-wrap: nowrap; gap: 6px; margin: 0; }
.profile-stack .tech-tag { padding: 4px 9px; font-size: 0.72rem; white-space: nowrap; }
/* Íconos ocultos para que los 4 chips quepan en una sola línea. Para mostrarlos, borra la siguiente regla: */
.profile-stack .tech-tag i { display: none; }
.profile-info { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; font-size: 0.85rem; opacity: 0.85; }
.profile-info li { display: flex; align-items: center; justify-content: center; gap: 8px; }
.profile-info + .social-icons { margin-top: 16px; }

/* Encabezado de nivel dentro de una tarjeta de stack (Dominio / Conocimientos básicos) */
.stack-heading {
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    text-align: left;
    margin-bottom: -10px;
}

/* Separación entre proyectos consecutivos */
.project-card + .project-card { margin-top: 30px; }