/* Reset and Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --white: #fff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html, body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header Styles */
.site-header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* Logo Styles */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

.site-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Navigation Styles */
.main-nav {
    display: flex;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: block;
    padding: 10px 20px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-radius: 4px;
}

.nav-link:hover {
    background-color: var(--bg-color);
    color: var(--secondary-color);
}

/* Logout Link */
.logout-link {
    display: block;
    padding: 8px 16px;
    color: var(--white);
    background-color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: var(--transition);
    margin-left: 15px;
}

.logout-link:hover {
    background-color: #c0392b;
}

/* Dropdown Styles */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--white);
    box-shadow: var(--shadow);
    border-radius: 4px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 1000;
}

.nav-item:hover .dropdown-menu,
.nav-item.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    border-bottom: 1px solid var(--bg-color);
}

.dropdown-menu li:last-child {
    border-bottom: none;
}

.dropdown-link {
    display: block;
    padding: 12px 20px;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.dropdown-link:hover {
    background-color: var(--bg-color);
    color: var(--secondary-color);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* Main Content Area */
.main-content {
    flex: 1;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Iframe Container */
.iframe-container {
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

#content-frame {
    width: 100%;
    min-height: 400px;
    border: none;
    display: block;
    transition: height 0.3s ease;
}

/* Footer Styles */
.site-footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 20px;
    text-align: center;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--white);
        box-shadow: var(--shadow);
        display: none;
    }

    .main-nav.active {
        display: block;
    }

    .nav-menu {
        flex-direction: column;
        padding: 10px 0;
    }

    .nav-item {
        border-bottom: 1px solid var(--bg-color);
    }

    .nav-link {
        padding: 15px 20px;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
        background-color: var(--bg-color);
    }

    .nav-item.active .dropdown-menu {
        display: block;
    }

    .dropdown-link {
        padding-left: 40px;
    }

    .header-container {
        height: 60px;
    }

    .logout-link {
        position: absolute;
        top: 15px;
        right: 60px;
        margin-left: 0;
        padding: 6px 12px;
        font-size: 0.85rem;
    }
}

/* Logged Out State */
.logged-out .header-container {
    justify-content: center;
}

.logged-out .logo {
    margin: 0;
}