:root {
    --color-bg: #10121B; 
    --color-card-bg: #191B28; 
    --color-primary: #7A29E4; 
    --color-text: #BFC2D3;
    --color-heading: #FFFFFF;
    --color-border: rgba(255, 255, 255, 0.1);
    --border-radius: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    font-size: 16px;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: var(--color-primary);
}

section {
    padding: 100px 0;
}

/*  TÍTULOS DE SECCIÓN   */
.title-group {
    text-align: center;
    margin-bottom: 50px;
}

.title-intro {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title::after {
    content: '';
    display: block;
    width: 174px; 
    height: 3px; 
    background: var(--color-primary); 
    margin: 0px auto 0; 
    border-radius: 2px; 
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-heading);
    margin-top: 5px;
}

/*  BOTONES  */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 50px; 
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border: 2px solid var(--color-primary);
}
.btn-primary:hover {
    background: transparent;
    color: var(--color-primary);
}

.btn-outline {
    background: transparent;
    color: var(--color-heading);
    border: 2px solid var(--color-border);
}
.btn-outline:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}


/*  NAVEGACIÓN  */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-nav {
    font-weight: 600;
    color: var(--color-heading);
    font-size: 1.3rem;
}

.navbar-collapse {
    display: flex;
    margin-left: auto; 
    margin-right: auto;
    padding-left: 100px; 
    padding-right: 100px; 
}

.nav-link {
    color: var(--color-heading);
    margin: 0 1rem;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.hamburger-btn {
    display: none; 
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger-line {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-heading);
    margin: 6px 0;
    transition: all 0.3s ease;
}

.hamburger-btn.active .hamburger-line:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
.hamburger-btn.active .hamburger-line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}


/*  SECCIÓN HERO  */
.hero-section {
    background: var(--color-card-bg);
    padding: 60px 0;
    min-height: 90vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.hero-content {
    flex-basis: 55%;
}

.hero-intro {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 4rem; 
    font-weight: 700;
    color: var(--color-heading);
    margin: 0.5rem 0;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.hero-contact-list {
    list-style: none;
    margin-bottom: 2rem;
}

.hero-contact-list li {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.hero-contact-list i {
    color: var(--color-primary);
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.hero-socials a {
    color: var(--color-text);
    font-size: 1.2rem;
    margin-right: 1.5rem;
    transition: color 0.3s ease;
}
.hero-socials a:hover {
    color: var(--color-primary);
}

/* Hero - Imagen (Derecha) */
.hero-image-container {
    flex-basis: 45%;
    position: relative;
    align-self: flex-end; 
    text-align: center;
}

.hero-img {
    max-width: 100%;
    max-height: 80vh;
    object-fit: contain;
    position: relative;
    z-index: 3;
}

/* El spirograph púrpura */
.hero-graphic {
    position: absolute;
    bottom: 70px;
    left: 60%; 
    transform: translateX(-50%); 
    width: 90%;
    padding-bottom: 90%;
    z-index: 1;
    
    background-image: 
        radial-gradient(var(--color-primary) 1px, transparent 1px),
        radial-gradient(var(--color-primary) 1px, transparent 1px);
    background-size: 10px 10px, 20px 20px;
    
    border: 2px dashed var(--color-primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: spin 60s linear infinite;
}

@keyframes spin {
    from { transform: translateX(-50%) rotate(0deg); }
    to { transform: translateX(-50%) rotate(360deg); }
}

/* Letra A de fondo */
.hero-bg-letter {
    position: absolute;
    top: 50%;
    left: 41%;
    transform: translateY(-50%);
    font-size: 30rem; /* Gigante */
    font-weight: 700;
    color: rgba(255, 255, 255, 0.03);
    z-index: 1;
    user-select: none;
}

/*  SECCIÓN SOBRE MÍ  */
.about-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.about-details {
    flex: 0 0 40%;
}

.about-details ul {
    list-style: none;
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    padding: 30px;
    border-radius: var(--border-radius);
}

.about-details ul li {
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}
.about-details ul li:last-child {
    border-bottom: none;
}

.about-details ul li strong {
    color: var(--color-heading);
    margin-right: 10px;
}

.about-text-content {
    flex: 1;
}

.about-title {
    color: var(--color-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

/*  SECCIÓN HABILIDADES  */
.skills-section {
    background: var(--color-card-bg); 
}

.skills-grid {
    max-width: 800px;
    margin: 0 auto;
}

.skill-item {
    display: flex;
    align-items: center;
    gap: 25px; 
    margin-bottom: 30px; 
}

.skill-logo {
    flex: 0 0 70px; 
    font-size: 4.5rem; 
    text-align: center;
}

.skill-details {
    flex: 1;
}

.skill-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    color: var(--color-heading);
    font-weight: 600;
    font-size: 1.1rem;
}

.skill-percent {
    font-size: 1rem;
    color: var(--color-text);
}

/* Contenedor de la barra  */
.skill-meter-container {
    width: 100%;
    background: #10121B; 
    border-radius: 5px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.skill-meter-bar {
    height: 10px;
    background: linear-gradient(90deg, var(--color-primary), #4ab8e0);
    width: 0; 
    transition: width 1.5s ease-out;
    border-radius: 5px;
}

/* Colores de Habilidades */
.skill-item.html .skill-logo { color: #E34F26; }
.skill-item.css .skill-logo { color: #1572B6; }
.skill-item.js .skill-logo { color: #F7DF1E; }
.skill-item.python .skill-logo { color: #3776AB; }
.skill-item.php .skill-logo i { color: #777BB4; }
.skill-item.php .skill-meter-bar { background: #777BB4; }
.skill-item.mysql .skill-logo i { color: #00758F; }
.skill-item.mysql .skill-meter-bar { background: #00758F; }

/*  Responsive para Habilidades  */
@media (max-width: 768px) {
    .skill-item {
        gap: 15px; 
    }
    .skill-logo {
        flex-basis: 50px; 
        font-size: 3rem; 
    }
    .skill-label {
        font-size: 1rem; 
    }
}

/*  SECCIÓN SERVICIOS  */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card-vertical {
    background: var(--color-card-bg);
    border: 2px solid var(--color-primary); 
    border-radius: var(--border-radius);
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}
.service-card-vertical:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(122, 41, 228, 0.2);
}

.service-img-container img {
    max-width: 100px; 
    margin-bottom: 20px;
}

.service-title {
    color: var(--color-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/*  SECCIÓN CONTACTO */
.contact-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-card-bg);
    padding: 40px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group.full-width,
.contact-form .btn.full-width {
    grid-column: 1 / -1;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    color: var(--color-heading);
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 5px;
    color: var(--color-heading);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: all 0.3s ease;
}
.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(122, 41, 228, 0.3);
}

/*  FOOTER  */
.footer {
    text-align: center;
    padding: 40px 20px;
    border-top: 1px solid var(--color-border);
    background: var(--color-card-bg);
    margin-top: 60px;
}

.social-links {
    margin-bottom: 1rem;
}
.social-links a {
    color: var(--color-text);
    font-size: 1.3rem;
    margin: 0 1rem;
    transition: color 0.3s ease;
}
.social-links a:hover {
    color: var(--color-primary);
}

.footer p {
    font-size: 0.9rem;
}

/* --- RESPONSIVE GENERAL --- */
@media (max-width: 992px) {
    .navbar-collapse {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        flex-direction: column;
        background: var(--color-card-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 0;
    }

    .navbar-collapse.active {
        display: flex;
    }
    
    .nav-link {
        margin: 0.5rem 0;
        text-align: center;
        padding: 0.5rem;
    }

    .hamburger-btn {
        display: block; 
    }

    .nav-right .btn-outline {
        display: none;
    }
    
    .hero-container {
        flex-direction: column-reverse;
        text-align: center;
    }

    .hero-content {
        flex-basis: 100%;
    }

    .hero-image-container {
        flex-basis: 100%;
        margin-bottom: 2rem;
        max-width: 400px;
    }

    .hero-title {
        font-size: 3rem;
    }
    
    .hero-bg-letter {
        display: none; 
    }

    .hero-socials {
        text-align: center;
    }

    .about-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .contact-form {
        grid-template-columns: 1fr;
    }
    .form-group.full-width {
        grid-column: 1;
    }
}

@media (max-width: 480px) {
    section {
        padding: 80px 0; 
    }
    .section-title {
        font-size: 2rem; 
    }
    .section-title::after {
        width: 120px; 
    }
    .hero-section {
        padding: 40px 0; 
    }
    .hero-title {
        font-size: 2.5rem; 
    }
    .hero-subtitle {
        font-size: 1.2rem;
    }
    .contact-form, 
    .about-details ul,
    .service-card-vertical {
         padding: 25px; 
    }
    .social-links a {
         margin: 0 0.5rem; 
    }
}

/* =================================================================
   ESTILOS DE LA PÁGINA DE PORTAFOLIO
   ================================================================= */

.portfolio-container .projects {
    padding-top: 80px;
    padding-bottom: 80px;
    background-color: #121212;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px; 
    padding: 0 20px; 
}

/* TARJETA */
.project-card {
    background-color: #1e1e1e;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid #333;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    border-color: #7A29E4;
    box-shadow: 0 15px 40px rgba(122, 41, 228, 0.3);
}

/* CONTENEDOR DE LA IMAGEN */
.project-image-container {
    height: 340px;
    width: 100%;

    display: flex;
    justify-content: center;
    align-items: center;
    
    background-color: #2b2b2b;
    position: relative;
    overflow: hidden;
}

/*  IMAGEN BLINDADA  */
.project-image.locked {
    width: 90%; 
    height: 90%;
    object-fit: contain !important;
    background-color: #2b2b2b; 
    flex-shrink: 0;
    display: block;
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    display: block;
}

.project-image.round-logo {
    width: 320px !important;
    height: 320px !important;
    border-radius: 50%;
    object-fit: cover !important;
    background-color: white;
    flex-shrink: 0;
}

.project-image.white-bg-icon {
    background-color: #ffffff !important;
    padding: 90px !important;
    object-fit: contain !important;
    width: 100% !important;
    height: 100% !important;
}

.project-card:hover .project-image {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(122, 41, 228, 0.85);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-link {
    text-decoration: none;
    color: #121212;
    background: #fff;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    transition: transform 0.2s ease;
}

.project-link:hover {
    transform: scale(1.1);
}

.project-info {
    padding: 30px;
    color: #ffffff;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #ffffff;
}

.project-description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #cccccc;
}

/* ===================
   RESPONSIVE DESIGN
   =================== */

@media (max-width: 1024px) {
    .projects-grid {
        gap: 30px;
        padding: 0 30px;
    }
    
    .project-image-container {
        height: 300px; 
    }
}

/* MÓVILES (Max 768px) */
@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 40px;
        padding: 0 20px;
    }

    .project-image-container {
        height: 260px;
    }

    .project-image.round-logo {
        width: 220px !important;
        height: 220px !important;
    }

    .project-image.white-bg-icon {
        padding: 50px !important;
    }

    .project-info {
        padding: 25px; 
    }
}

/* MÓVILES PEQUEÑOS (Max 480px) */
@media (max-width: 480px) {
    .portfolio-container .projects {
        padding-top: 50px;
        padding-bottom: 50px;
    }

    .projects-grid {
        gap: 30px;
        grid-template-columns: 1fr; 
    }

    .project-image-container {
        height: 240px;
    }

    .project-title {
        font-size: 1.3rem;
    }
    
    .project-info {
        padding: 20px;
    }
    
    .project-image.round-logo {
        width: 180px !important;
        height: 180px !important;
    }
}