/* --- CSS Variables --- */
:root {
    /* Color Palette */
    --clr-white: #FCFCFC;
    --clr-off-white: #EDEBE8;
    --clr-black: #2D2925;
    --clr-dark: #05204A;
    --clr-accent: #AB364D;
    --clr-accent-alt: #0892A5;

    /* Typography */
    --font-heading: 'Merriweather', serif;
    --font-body: 'Merriweather Sans', sans-serif;

    /* Spacing & Layout */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --sidebar-width: 280px;
    --border-radius: 6px;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--clr-white);
    color: var(--clr-black);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--clr-dark);
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--clr-accent-alt);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--clr-accent);
}

/* --- Header & Navigation --- */
.site-header {
    background-color: var(--clr-dark);
    color: var(--clr-white);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.logo {
    color: var(--clr-white);
    font-size: 1.5rem;
    margin-bottom: 0;
}

.main-nav ul {
    list-style: none;
    display: flex;
    gap: var(--spacing-md);
}

.main-nav a {
    color: var(--clr-off-white);
    font-weight: 700;
}

.main-nav a:hover, .main-nav a.active {
    color: var(--clr-accent-alt);
}

/* --- Language Toggle --- */
.lang-toggle-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
}

.lang-label {
    font-size: 0.9rem;
    color: var(--clr-off-white);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--clr-accent-alt);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--clr-white);
    transition: .4s;
}

input:checked + .slider {
    background-color: var(--clr-accent);
}

input:checked + .slider:before {
    transform: translateX(20px);
}

.slider.round {
    border-radius: 24px;
}

.slider.round:before {
    border-radius: 50%;
}

/* --- Main Layout --- */
.layout-wrapper {
    display: flex;
    flex: 1;
    flex-direction: column; /* Mobile first: stack elements */
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* --- Sidebar --- */
.sidebar {
    background-color: var(--clr-off-white);
    padding: var(--spacing-lg);
    border-right: 1px solid #ddd;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: var(--spacing-sm);
}

.sidebar-nav h3 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.1rem;
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    padding: var(--spacing-lg);
}

.btn-primary {
    background-color: var(--clr-accent);
    color: var(--clr-white);
    border: none;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-weight: 700;
    border-radius: var(--border-radius);
    cursor: pointer;
    margin-top: var(--spacing-md);
    transition: background-color 0.3s;
}

.btn-primary:hover {
    background-color: var(--clr-dark);
}

/* --- Footer --- */
.site-footer {
    background-color: var(--clr-black);
    color: var(--clr-off-white);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    margin-top: auto;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links a {
    color: var(--clr-off-white);
    margin: 0 var(--spacing-sm);
}

.footer-links a:hover {
    color: var(--clr-accent-alt);
}

/* --- Responsive Design (Tablet & Desktop) --- */
@media (min-width: 768px) {
    .layout-wrapper {
        flex-direction: row; /* Side-by-side layout for larger screens */
    }
    
    .sidebar {
        width: var(--sidebar-width);
        flex-shrink: 0;
    }
}

@media (max-width: 767px) {
    .header-container {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .main-nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}