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

:root {
    --primary-color: #1A237E; /* Deep Indigo */
    --secondary-color: #E8EAF6; /* Light Indigo */
    --accent-color: #FFD600; /* Amber */
    --text-color: #333;
    --light-text-color: #f4f4f4;
    --border-color: #ccc;
    --background-light: #f9f9f9;
    --background-dark: #222;
    --font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    --line-height-base: 1.6;
    --max-width-content: 1200px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base font size */
}

body {
    font-family: var(--font-family-sans);
    line-height: var(--line-height-base);
    color: var(--text-color);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Accessible Focus Styles */
:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-sans);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    color: var(--primary-color);
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.8rem; }
h4 { font-size: 1.4rem; }
h5 { font-size: 1.2rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover,
a:focus {
    color: var(--accent-color);
    text-decoration: underline;
}

ul, ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

ul li, ol li {
    margin-bottom: var(--spacing-sm);
}

strong {
    font-weight: 700;
}

em {
    font-style: italic;
}

/* Magazine Layout Structure */
.container {
    max-width: var(--max-width-content);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.grid-magazine {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-xl);
    padding: var(--spacing-xl) 0;
}

@media (min-width: 768px) {
    .grid-magazine {
        grid-template-columns: 2fr 1fr; /* Main content and sidebar */
    }
}

@media (min-width: 1024px) {
    .grid-magazine {
        grid-template-columns: 3fr 1fr; /* More emphasis on main content */
    }
}

main {
    grid-column: 1 / -1; /* Full width on small screens */
}

.main-content {
    background-color: #fff;
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.sidebar {
    background-color: var(--secondary-color);
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

@media (min-width: 768px) {
    main {
        grid-column: 1 / 2;
    }
    .sidebar {
        grid-column: 2 / 3;
    }
}

/* Header */
.site-header {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    padding: var(--spacing-lg) 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--light-text-color);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
}

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

/* Classic Navigation Pattern */
.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.main-nav ul li {
    margin-left: var(--spacing-xl);
    margin-bottom: 0; /* Override default list item margin */
}

.main-nav ul li a {
    color: var(--light-text-color);
    font-weight: 600;
    padding: var(--spacing-sm) 0;
    display: block;
    transition: color 0.2s ease-in-out, border-bottom 0.2s ease-in-out;
    border-bottom: 3px solid transparent;
}

.main-nav ul li a:hover,
.main-nav ul li a:focus {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 3px solid var(--accent-color);
}

.main-nav ul li a.active {
    color: var(--accent-color);
    border-bottom: 3px solid var(--accent-color);
}

/* Mobile Navigation Toggle (Hamburger) */
.nav-toggle {
    display: none; /* Hidden by default */
    background: none;
    border: none;
    color: var(--light-text-color);
    font-size: 2rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: 1000;
}

@media (max-width: 767px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        width: 100%;
        order: 1; /* Puts nav below logo on small screens */
        display: none; /* Hidden by default */
        flex-direction: column;
        background-color: var(--primary-color);
        padding: var(--spacing-md) 0;
        border-top: 1px solid rgba(255,255,255,0.1);
    }

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

    .main-nav ul {
        flex-direction: column;
        text-align: center;
    }

    .main-nav ul li {
        margin: var(--spacing-sm) 0;
    }

    .main-nav ul li a {
        padding: var(--spacing-sm) var(--spacing-md);
        border-bottom: none;
    }

    .main-nav ul li a:hover,
    .main-nav ul li a:focus,
    .main-nav ul li a.active {
        border-bottom: none;
        background-color: rgba(255,255,255,0.1);
    }
}


/* Cookie Banner Styles */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--background-dark);
    color: var(--light-text-color);
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    z-index: 10000;
    font-size: 0.9rem;
}

.cookie-banner p {
    margin: 0;
    flex-grow: 1;
    text-align: center;
}

.cookie-banner a {
    color: var(--accent-color);
    text-decoration: underline;
}

.cookie-banner button {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    border: 2px solid var(--primary-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.2s ease-in-out, border-color 0.2s ease-in-out;
    white-space: nowrap;
}

.cookie-banner button:hover,
.cookie-banner button:focus {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--primary-color);
}

@media (min-width: 768px) {
    .cookie-banner p {
        text-align: left;
    }
    .cookie-banner {
        justify-content: space-between;
    }
}


/* Form Styles */
.form-group {
    margin-bottom: var(--spacing-lg);
}

label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--primary-color);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-family-sans);
    font-size: 1rem;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 35, 126, 0.2);
    outline: none;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

button[type="submit"],
.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--light-text-color);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: background-color 0.2s ease-in-out, transform 0.1s ease-in-out;
    text-align: center;
    text-decoration: none;
}

button[type="submit"]:hover,
button[type="submit"]:focus,
.btn:hover,
.btn:focus {
    background-color: var(--accent-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn.btn-secondary:hover,
.btn.btn-secondary:focus {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    border-color: var(--primary-color);
}


/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-xl);
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    border-radius: 8px;
    overflow: hidden; /* Ensures rounded corners apply */
}

th, td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    font-weight: 600;
    position: sticky;
    top: 0; /* Makes headers stick when scrolling table */
}

tr:nth-child(even) {
    background-color: var(--secondary-color);
}

tr:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
    cursor: pointer;
}

/* Responsive Tables */
@media (max-width: 767px) {
    table, thead, tbody, th, td, tr {
        display: block;
    }

    thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }

    tr {
        border: 1px solid var(--border-color);
        margin-bottom: var(--spacing-md);
        border-radius: 5px;
    }

    td {
        border: none;
        border-bottom: 1px solid var(--border-color);
        position: relative;
        padding-left: 50%;
        text-align: right;
    }

    td:last-child {
        border-bottom: none;
    }

    td::before {
        content: attr(data-label);
        position: absolute;
        left: var(--spacing-md);
        width: 45%;
        padding-right: var(--spacing-md);
        white-space: nowrap;
        text-align: left;
        font-weight: 600;
        color: var(--primary-color);
    }
}


/* Details/Summary Styles */
details {
    background-color: var(--secondary-color);
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

summary {
    display: block; /* Ensures full click area for summary */
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    color: var(--primary-color);
    cursor: pointer;
    background-color: var(--secondary-color);
    border-bottom: 1px solid var(--primary-color);
    transition: background-color 0.2s ease-in-out;
    position: relative;
}

summary:hover,
summary:focus {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    position: absolute;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    line-height: 1;
    transition: transform 0.2s ease-in-out;
}

details[open] summary::after {
    content: '-';
    transform: translateY(-50%) rotate(45deg);
}

details .content {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid rgba(0,0,0,0.1);
}


/* Aside Styles */
aside {
    background-color: var(--secondary-color);
    padding: var(--spacing-xl);
    border-left: 5px solid var(--primary-color);
    margin-bottom: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

aside h3 {
    margin-top: 0;
    color: var(--primary-color);
}

aside ul {
    list-style-type: none;
    margin-left: 0;
}

aside ul li a {
    display: block;
    padding: var(--spacing-sm) 0;
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px dashed var(--primary-color);
}

aside ul li a:hover,
aside ul li a:focus {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    text-decoration: none;
}

aside ul li:last-child a {
    border-bottom: none;
}


/* Blockquote Styles */
blockquote {
    background-color: var(--secondary-color);
    border-left: 5px solid var(--accent-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: var(--primary-color);
    border-radius: 0 8px 8px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

blockquote p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

blockquote cite {
    display: block;
    font-size: 0.9em;
    text-align: right;
    color: var(--text-color);
    margin-top: var(--spacing-sm);
}


/* Definition List Styles */
dl {
    margin-bottom: var(--spacing-xl);
    background-color: #fff;
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

dt {
    font-weight: 700;
    color: var(--primary-color);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

dd {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px dashed var(--border-color);
}

dd:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
}

/* Footer */
.site-footer {
    background-color: var(--primary-color);
    color: var(--light-text-color);
    padding: var(--spacing-xl) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.site-footer p {
    margin: 0;
    font-size: 0.9rem;
}

.footer-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
}

.footer-nav ul li a {
    color: var(--light-text-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.footer-nav ul li a:hover,
.footer-nav ul li a:focus {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.margin-top-lg { margin-top: var(--spacing-xl); }
.margin-bottom-lg { margin-bottom: var(--spacing-xl); }
.padding-lg { padding: var(--spacing-xl); }
.sr-only { /* For screen readers */
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}