@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css');

:root {
  /* Палітра 1: Dark Slate, Red, Light Gray, Blue */
  --primary-color: #2C3E50;
  --secondary-color: #34495E;
  --accent-color: #E74C3C;
  --light-color: #ECF0F1;
  --dark-color: #0F1021;
  --gradient-primary: linear-gradient(135deg, #34495E 0%, #2C3E50 100%);
  --hover-color: #1ABC9C;
  --background-color: #FFFFFF;
  --text-color: #7F8C8D;
  --border-color: rgba(44, 62, 80, 0.15);
  --divider-color: rgba(44, 62, 80, 0.1);
  --shadow-color: rgba(44, 62, 80, 0.1);
  --highlight-color: #3498DB;
  
  --main-font: 'Oswald', sans-serif;
  --alt-font: 'Roboto', sans-serif;
}

body {
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.shadow-neumorphic {
    box-shadow: 8px 8px 16px var(--shadow-color), -8px -8px 16px rgba(255, 255, 255, 0.8);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover, .hover-underline:hover {
    transform: translateY(-5px);
    box-shadow: 12px 12px 20px var(--shadow-color), -12px -12px 20px rgba(255, 255, 255, 0.9);
}

.hover-underline {
    position: relative;
    transition: color 0.3s ease;
}

.hover-underline::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--highlight-color);
    transition: width 0.3s ease;
}

.hover-underline:hover::after {
    width: 100%;
}

button:hover, a.inline-block:hover {
    filter: brightness(1.1);
}

/* CSS-only мобільне меню */
.navigation {
    display: flex;
}
@media (max-width: 768px) {
    .navigation {
        display: none;
        width: 100%;
        text-align: center;
        padding: 1rem 0;
    }
    #mobile-menu:checked ~ .navigation {
        display: block;
    }
}