/* Base Styles */
* {
   
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #000000;
    --text-color: #333333;
    --light-bg: #ffffff;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    min-height: 100vh;
    background-color: var(--light-bg);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header Styles */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.9);
    transition: var(--transition);
}

/* Navigation Styles */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 15px 40px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav.scrolled {
    padding: 10px 40px;
    background-color: rgba(0, 0, 0, 0.95);
}

.nav img {
    height: 30px;
    filter: brightness(0) invert(1);
    transition: var(--transition);
}

.nav-links {
    display: flex;
    gap: 25px;
    list-style: none;
    justify-content: flex-end;
    grid-column: 3;
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: white;
    transition: var(--transition);
}

.nav-links a:hover {
    color: #ffffff;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    width: 48px;
    height: 48px;
    position: relative;
    z-index: 1101;
    border-radius: 50%;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.menu-toggle:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}
.menu-toggle .bar {
    display: block;
    width: 28px;
    height: 3px;
    background-color: #fff;
    border-radius: 2px;
    position: absolute;
    left: 10px;
    transition: all 0.35s cubic-bezier(0.4,0,0.2,1);
}
.menu-toggle .bar:nth-child(1) {
    top: 14px;
}
.menu-toggle .bar:nth-child(2) {
    top: 22px;
}
.menu-toggle .bar:nth-child(3) {
    top: 30px;
}
.menu-toggle.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.menu-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: scaleX(0.5);
}
.menu-toggle.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}
.menu-toggle:active {
    background: rgba(255,255,255,0.08);
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.menu-backdrop {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.35);
    backdrop-filter: blur(4px);
    z-index: 1100;
    opacity: 0;
    transition: opacity 0.35s cubic-bezier(0.4,0,0.2,1);
}
.menu-backdrop.active {
    display: block;
    opacity: 1;
}

/* Gallery Styles */
/* Main content spacing */
main {
    margin-top: 80px; /* Altura del header */
}

.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    padding: 40px 40px 40px;
    max-width: 1600px;
    margin: 0 auto;
    opacity: 0;
    animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
    }
}

.gallery-item {
    display: block;
    position: relative;
    background: none;
    border-radius: 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 1.5px 6px rgba(0,0,0,0.08);
    padding: 0;
    margin: 0;
    overflow: hidden;
    width: 100%;
    height: 260px;
    transition: box-shadow 0.3s cubic-bezier(0.4,0,0.2,1), transform 0.3s cubic-bezier(0.4,0,0.2,1);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.4s cubic-bezier(0.4,0,0.2,1), opacity 0.3s;
    display: block;
}

.gallery-item:hover {
    box-shadow: 0 16px 48px rgba(0,0,0,0.18), 0 3px 12px rgba(0,0,0,0.12);
    transform: translateY(-8px) scale(1.025);
}

.gallery-item:hover img {
    transform: scale(1.06);
    opacity: 0.96;
}

.gallery-item h3 {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0;
    padding: 16px 0 10px 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 80%, rgba(0,0,0,0.0) 100%);
    color: #fff;
    font-size: 1.18rem;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.5px;
    z-index: 2;
    border-radius: 0 0 0 0;
}

.gallery-item .overlay {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    position: absolute;
    left: 0; right: 0; bottom: 0; top: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 60%, rgba(0,0,0,0.0) 100%);
    color: #fff;
    opacity: 0;
    transition: opacity 0.4s cubic-bezier(0.4,0,0.2,1);
    pointer-events: none;
    padding-bottom: 18px;
}

.title-container h3 {
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    line-height: 1.1;
    padding: 2px 0;
}

.project-logo {
    height: 1em;
    width: auto;
    filter: brightness(0) invert(1);
    display: inline-flex;
    align-items: center;
}

/* Specific style for the logo in the gallery item */
.gallery-item .project-logo {
    height: 20px;
    width: 15px;
    object-fit: contain;
    margin-left: 5px;
    vertical-align: middle;
}
.gallery-item:hover .overlay {
    opacity: 1;
    pointer-events: auto;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .gallery-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        padding: 150px 10px 24px; /* Aumentado el padding superior */
    }
}
@media (max-width: 900px) {
    .gallery-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        padding: 130px 4px 12px; /* Aumentado el padding superior */
    }
    .gallery-item {
        height: 120px;
    }
    .gallery-item h3 {
        font-size: 0.95rem;
    }
}
@media (max-width: 768px) {
    .main-header {
        position: fixed;
    }
    
    main {
        margin-top: 70px; /* Ajusta según la altura del header en móvil */
    }
    
    .gallery-container {
        padding: 20px 10px;
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .gallery-item {
        height: 80px;
    }
    .gallery-item h3 {
        font-size: 0.85rem;
    }
    .nav {
        padding: 10px 5px;
    }
}
@media (max-width: 576px) {
    .gallery-container {
        padding-top: 100px;
        padding-left: 12px;
        padding-right: 12px;
        padding-bottom: 4px;
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .gallery-item {
        height: 180px;
        margin: 0 auto;
    }
    .gallery-item h3 {
        font-size: 0.9rem;
    }
}
@media (max-width: 480px) {
    .main-header {
        position: fixed;
    }
    
    main {
        margin-top: 60px; /* Ajusta según la altura del header en móvil pequeño */
    }
    
    .gallery-container {
        padding: 15px 10px;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .gallery-item {
        height: 120px;
        margin-bottom: 0;
    }
    .nav {
        padding: 10px 15px;
    }
    .nav img {
        height: 25px;
    }
    body.menu-open .gallery-container {
        padding-top: 250px;
    }
    
    /* Asegurar que el menú móvil no tape el contenido */
    .nav-links {
        top: 60px;
        padding: 25px 0;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        gap: 15px;
    }
    
    .nav-links li {
        margin: 18px 0;
    }
    
    .nav-links a {
        padding: 8px 0;
    }
}

/* Loading Animation */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Tablet and Mobile Navigation */
@media (max-width: 768px) {
    /* Navigation Styles */
    .nav {
        padding: 12px 20px;
    }

    .nav.scrolled {
        padding: 8px 20px;
    }

    .nav img {
        height: 25px;
    }


    .menu-toggle {
        display: block;
        grid-column: 3;
        justify-self: end;
    }

    .nav-links {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        transform: translateY(0);
    }

    .nav-links li {
        opacity: 0;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        margin: 10px 0;
    }

    .nav-links.active li {
        opacity: 1;
        transform: translateY(0);
    }

    .nav-links li:nth-child(1) { transition-delay: 0.1s; }
    .nav-links li:nth-child(2) { transition-delay: 0.2s; }
    .nav-links li:nth-child(3) { transition-delay: 0.3s; }
    .nav-links li:nth-child(4) { transition-delay: 0.4s; }

    /* Gallery Styles */
    .gallery-container {
        grid-template-columns: repeat(2, 1fr);
        padding: 15px;
        gap: 15px;
    }
    
    .overlay h3 {
        font-size: 1.2em;
    }
    
    .overlay p {
        font-size: 0.85em;
    }
}

/* Mobile Styles */