:root {
    /* Modern color scheme */
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --accent-color: #0056b3;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --text-dark: #212529;
    --border-color: #dee2e6;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 16px rgba(0, 0, 0, 0.15);

    /* Typography */
    --font-serif: "Merriweather", serif;
    --font-sans:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

body {
    font-family: "Merriweather", serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Contact navbar styling */
.navbar-contact {
    background: linear-gradient(135deg, var(--white) 0%, var(--light-bg) 100%);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar-contact .nav-link {
    color: var(--text-dark);
    transition:
        color 0.3s ease,
        transform 0.2s ease;
    font-weight: 500;
}

.navbar-contact .nav-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.social-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    object-fit: cover;
}

.social-icon:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-hover);
}

/* Main menu styling */
.navbar-main {
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-main.scrolled {
    box-shadow: var(--shadow-hover);
    padding: 0.75rem 1rem;
}

.nav-item {
    position: relative;
}

.nav-link {
    color: var(--text-dark) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
    transition: width 0.3s ease;
}

.nav-link:hover {
    background-color: rgba(13, 110, 253, 0.08);
    color: var(--primary-color) !important;
}

.nav-link:hover::after {
    width: 80%;
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-hover);
    border-radius: 12px;
    padding: 0.5rem;
    margin-top: 0.5rem;
    animation: fadeInDown 0.3s ease;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    padding: 0.65rem 1rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: var(--primary-color);
    color: var(--white);
    transform: translateX(5px);
}

/* Content iframe */
.content-frame {
    border: none;
    background: var(--white);
    box-shadow: var(--shadow);
    border-radius: 12px;
    margin: 1.5rem auto;
    max-width: 1400px;
    transition: all 0.3s ease;
}

.content-frame:hover {
    box-shadow: var(--shadow-hover);
}

/* Responsive design improvements */
@media (max-width: 768px) {
    .navbar-main {
        padding: 0.75rem;
    }

    .nav-link {
        padding: 0.75rem 1rem !important;
    }

    .content-frame {
        margin: 1rem;
        border-radius: 8px;
    }

    .social-icon {
        width: 28px;
        height: 28px;
    }
}

/* Dark mode support (optional future enhancement) */
@media (prefers-color-scheme: dark) {
    /* Uncomment to enable dark mode
    :root {
        --light-bg: #1a1a1a;
        --white: #2d2d2d;
        --text-dark: #e4e4e4;
        --border-color: #404040;
    }
    */
}

/* Accessibility improvements */
.nav-link:focus,
.dropdown-item:focus,
.social-icon:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    .navbar-contact,
    .navbar-main {
        display: none;
    }

    .content-frame {
        box-shadow: none;
        margin: 0;
    }
}