:root {
    --primary-color: #000000;
    --secondary-color: #333333;
    --text-dark: #1f1f1f;
    --text-light: #ffffff;
    --bg-light: #ffffff;
    --bg-dark: #000000;
    --bg-gray: #f5f5f5;
}

body {
    background-color: var(--bg-light);
    color: var(--text-dark);
}

.gradient-bg {
    background: linear-gradient(135deg, var(--bg-dark), var(--secondary-color));
}

.nav-link {
    position: relative;
    text-decoration: none;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: var(--text-dark);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.creative-navbar {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.8);
}

@media (max-width: 768px) {
    .mobile-menu {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding-top: 4rem;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        transform: translateY(-100%);
        transition: transform 0.3s ease-in-out;
        z-index: 40;
    }

    .mobile-menu.active {
        transform: translateY(0);
    }

    .mobile-menu-button {
        z-index: 50;
        position: relative;
        width: 30px;
        height: 20px;
        cursor: pointer;
    }

    .mobile-menu-button div {
        position: absolute;
        width: 100%;
        height: 2px;
        background-color: var(--text-dark);
        transition: all 0.3s ease;
    }

    .mobile-menu-button div:first-child {
        top: 0;
    }

    .mobile-menu-button div:nth-child(2) {
        top: 50%;
        transform: translateY(-50%);
    }

    .mobile-menu-button div:last-child {
        bottom: 0;
    }

    .mobile-menu-button.active div:first-child {
        transform: rotate(45deg);
        top: 50%;
    }

    .mobile-menu-button.active div:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-button.active div:last-child {
        transform: rotate(-45deg);
        bottom: 40%;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.floating {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.creative-border {
    border: 2px solid var(--primary-color);
    border-radius: 1rem;
    position: relative;
    overflow: hidden;
}

.creative-border::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 48%, var(--primary-color) 49%, var(--primary-color) 51%, transparent 52%);
    background-size: 20px 20px;
    opacity: 0.1;
}

.highlight-box {
    position: relative;
    padding: 2rem;
    background: var(--bg-gray);
    border-radius: 1rem;
    overflow: hidden;
}

.highlight-box::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--primary-color);
    opacity: 0.1;
    border-radius: 50%;
    transform: translate(50%, -50%);
}