/* ==========================================================
   Variables y Estilos Generales
   ========================================================== */
   :root {
    --color-bg-light: #F5F5F7; /* Blanco casi puro para un fondo suave */
    --color-bg-dark: #1D1D1F; /* Gris oscuro para secciones de contraste */
    --color-text-dark: #121212;
    --color-text-light: #F0F0F0;
    --color-accent: #0071e3; /* Color azul de acento de Apple */
    --color-border: #D2D2D7; /* Un gris sutil para bordes */
    --color-border-dark: #3F3F41;
    --font-family-body: 'Inter', sans-serif;
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05); /* Sombra suave para las tarjetas */
    --shadow-card-hover: 0 10px 40px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    font-family: var(--font-family-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.05em; /* Un kerning más ajustado para un look premium */
}

h2 {
    font-size: clamp(1.8rem, 5vw, 2.5rem);
    margin-bottom: 40px;
}

p {
    font-size: clamp(1rem, 2vw, 1.1rem);
}

/* ==========================================================
   Navegación y Header
   ========================================================== */
.main-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
}

nav a {
    color: var(--color-text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
    padding: 5px 0;
}

nav a:hover {
    color: var(--color-accent);
    /* Efecto de "empujar" en el texto al pasar el cursor */
    transform: scale(1.05);
}

.logo {
    font-weight: 700;
    font-size: 1.25rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
    transition: transform 0.5s ease-in-out;
}

/* Menú de Hamburguesa */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
    position: relative;
    width: 30px;
    height: 30px;
}

.hamburger .bar {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-dark);
    position: absolute;
    left: 0;
    transition: all 0.3s ease-in-out;
    top: 50%;
    transform: translateY(-50%);
}

.hamburger .bar:first-child { transform: translateY(-10px); }
.hamburger .bar:last-child { transform: translateY(10px); }
.hamburger .bar:nth-child(2) { opacity: 1; }


.hamburger.active .bar:first-child {
    transform: translateY(0) rotate(45deg);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:last-child {
    transform: translateY(0) rotate(-45deg);
}

@media screen and (max-width: 768px) {
    .main-header { padding: 20px; }
    .hamburger { display: block; }
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(15px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transform: translateY(-100%);
        visibility: hidden;
    }
    .nav-links.active {
        transform: translateY(0);
        visibility: visible;
    }

    /* Reducción del tamaño del botón de hamburguesa en móviles */
    .hamburger {
        width: 24px;
        height: 24px;
    }
    
    .hamburger .bar:first-child {
        transform: translateY(-8px);
    }
    
    .hamburger .bar:last-child {
        transform: translateY(8px);
    }

    .hamburger.active .bar:first-child {
        transform: translateY(0) rotate(45deg);
    }

    .hamburger.active .bar:last-child {
        transform: translateY(0) rotate(-45deg);
    }
}

/* ==========================================================
   Secciones y Contenido
   ========================================================== */
section {
    padding: clamp(60px, 10vw, 100px) 20px;
}

#hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
}

.hero-subtitle {
    font-size: clamp(1rem, 4vw, 2rem);
    font-weight: 500;
    color: #888;
    margin-top: 10px;
}

.page-section {
    max-width: 1100px;
    margin: 0 auto;
}

.page-section p {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 20px;
    color: #555;
    font-size: 1.1rem;
}

/* ==========================================================
   Habilidades
   ========================================================== */
   #skills {
    background-color: var(--color-bg-dark);
    color: var(--color-text-light);
    /* Se añade un padding vertical que se ajusta mejor */
    padding: 100px 20px;
}

#skills h2 {
    color: var(--color-text-light);
}

.skills-grid {
    display: grid;
    /* Ajuste para que las tarjetas sean más flexibles */
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 20px;
    justify-items: center;
    text-align: center;
    margin-top: 40px;
}

.skill-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(5px, 5vw, 10px); /* Espaciado interno responsive */
    background: #2D2D2F;
    border-radius: 12px;
    /* Transición más fluida y elegante con cubic-bezier */
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    border: 1px solid var(--color-border-dark);
    /* Sombra más sutil por defecto */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.skill-card:hover {
    transform: translateY(-5px);
    /* Sombra más pronunciada en el hover para dar la sensación de "flotar" */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.skill-card i {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--color-accent);
    margin-bottom: 10px;
}

.skill-card p {
    margin: 0;
    font-weight: 500;
    color: var(--color-text-light);
}
/* ==========================================================
   Proyectos
   ========================================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    justify-content: center;
    margin-top: 40px;
}

.project-card {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border-radius: 15px;
    overflow: hidden;
    text-align: center;
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-subtle);
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 0;
}

.project-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0) 100%);
    transition: background 0.3s ease;
    z-index: 1;
}

.project-card:hover::before {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 50%, rgba(0, 0, 0, 0.1) 100%);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-card-hover);
}

.card-content {
    position: relative;
    z-index: 2;
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    height: 100%;
    color: var(--color-text-light);
}

.card-content h3 {
    margin-bottom: 10px;
    font-size: 1.4rem;
    background-color: rgba(16, 16, 16, 0.171);
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.card-content p {
    font-size: 0.9rem;
    color: #ddd;
    margin-bottom: 5px;
}

.project-links a {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.8rem 1.2rem;
    border-radius: 999px; /* Bordes redondeados */
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease;
    margin: 15px 5px 0;
}

.project-links a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

/* ==========================================================
   Contacto y Pie de Página
   ========================================================== */
#contact {
    text-align: center;
}

.social-links a {
    color: var(--color-text-dark);
    text-decoration: none;
    font-size: clamp(1.2rem, 4vw, 1.5rem);
    margin: 0 15px;
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: var(--color-accent);
    transform: translateY(-3px);
}

.main-footer {
    background: var(--color-bg-dark);
    color: var(--color-text-light);
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--color-border-dark);
}