:root {
    --primary: #FF8C00;
    --text: #f0fdf4;
    --bg: #020617;
}

body:not(.dark) {
    --primary: #FF8C00;
    --text: #1f2937;
    --bg: #ffffff;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

.logo-bg {
    background-image: url('images/fondo.jpg');
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-position: center;
    background-size: cover;
    opacity: 0.8;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.parallax {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.nav-item {
    position: relative;
}

.nav-item::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary);
    transition: width 0.3s;
}

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

.gallery-item {
    transition: transform 0.3s;
}

.gallery-item:hover {
    transform: scale(1.05);
    z-index: 10;
}

.interest-item {
    transition: transform 0.3s;
}

.interest-item:hover {
    transform: scale(1.05);
    z-index: 10;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    height: 100%;
    left: 0;
    top: 0;
    background-color: var(--primary);
}

.timeline-item {
    position: relative;
    padding-left: 15px;
    margin-bottom: 15px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    left: -10px;
    top: 10px;
    background-color: var(--primary);
}

.language-option {
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.3s;
}

.language-option.active {
    opacity: 1;
    font-weight: bold;
}

.fade-in {
    animation: fadeIn 1.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.mode-toggle {
    transition: transform 0.3s;
}

.mode-toggle:hover {
    transform: rotate(30deg);
}

.copy-btn {
    transition: all 0.3s;
}

.copy-btn:hover {
    background-color: var(--primary);
    color: white;
}

.copy-btn.copied {
    background-color: #10b981;
    color: white;
}

.filter-btn {
    transition: all 0.3s;
}

.filter-btn.active {
    background-color: var(--primary);
    color: white;
}

#imageModal.opacity-100 #modalImage {
    transform: scale(1);
}

#imageModal * {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.form-feedback {
    transition: opacity 0.3s;
}

@media (max-width: 768px) {
    .logo-bg {
        background-size: 100px;
    }

    .parallax {
        background-attachment: scroll;
    }
}