/* Base Styles - Required by header */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --accent-color: #3498db;
    --secondary-color: #2c3e50;
    --light-gray: #f5f5f5;
    --border-color: #eeeeee;
    --card-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --hover-color: #2980b9;
    --dropdown-bg: #ffffff;
    --dropdown-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header & Navbar Styles */
header {
    padding: 15px 0;
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    background-color: var(--bg-color);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 10px 0;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.3s;
    display: flex;
    align-items: center;
}

.logo:hover {
    color: var(--accent-color);
    transform: scale(1.05);
}

.logo span {
    color: var(--accent-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
    position: relative;
}

.nav-links a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    padding: 10px 0;
    display: block;
    position: relative;
    font-size: 1rem;
}

.nav-links a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

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

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

.dropdown {
    position: relative;
    cursor: pointer;
}

.dropdown>a::before {
    content: '▼';
    font-size: 0.7em;
    margin-left: 5px;
    vertical-align: middle;
    transition: transform 0.3s;
}

.dropdown:hover>a::before {
    transform: rotate(180deg);
}

.dropdown-content {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--dropdown-bg);
    min-width: 200px;
    box-shadow: var(--dropdown-shadow);
    border-radius: 8px;
    z-index: 10;
    overflow: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.dropdown-content a {
    color: var(--secondary-color);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.dropdown-content a:hover {
    background-color: var(--light-gray);
    color: var(--accent-color);
    border-left: 3px solid var(--accent-color);
    transform: translateX(5px);
}

.dropdown:hover .dropdown-content {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.subscribe-btn {
    background-color: var(--accent-color);
    color: white !important;
    padding: 10px 20px !important;
    border-radius: 50px;
    transition: all 0.3s;
    box-shadow: 0 4px 8px rgba(52, 152, 219, 0.3);
}

.subscribe-btn:hover {
    background-color: var(--hover-color);
    transform: translateY(-3px) !important;
    text-decoration: none;
    box-shadow: 0 6px 12px rgba(52, 152, 219, 0.4);
}

.subscribe-btn:active {
    transform: translateY(-1px) !important;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
    transition: color 0.3s;
}

.mobile-menu-btn:hover {
    color: var(--accent-color);
}

/* Responsive Design for Header */
@media (max-width: 768px) {
    nav {
        position: relative;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-color);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--card-shadow);
        z-index: 10;
        align-items: flex-start;
        border-radius: 0 0 10px 10px;
    }

    .nav-links.active {
        display: flex;
        animation: slideDown 0.4s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-20px);
        }

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

    .nav-links li {
        margin: 10px 0;
        margin-left: 0;
        width: 100%;
    }

    .nav-links a {
        padding: 12px 0;
    }

    .dropdown-content {
        position: static;
        box-shadow: none;
        margin-left: 20px;
        width: 90%;
        display: none;
        margin-top: 10px;
        background-color: var(--light-gray);
        border-radius: 5px;
        transform: none;
    }

    .dropdown.active .dropdown-content {
        display: block;
        visibility: visible;
        opacity: 1;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.7rem;
    }
}