/* =========================================
   Variables
   ========================================= */
:root {
    --color-primary: #005293;
    /* Swedish Blue */
    --color-secondary: #fecb00;
    /* Swedish Yellow */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f4f7f6;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --border-radius: 8px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    transition: opacity 0.3s ease;
    /* Add transition for smooth loading */
}

/* Loading state for layout injection */
body.layout-loading {
    opacity: 0;
    pointer-events: none;
    /* Prevent clicks while loading */
}

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* =========================================
   Layout & Containers
   ========================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.bg-light {
    background-color: var(--color-bg-light);
}

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* =========================================
   Typography
   ========================================= */
h1,
h2,
h3 {
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 2rem;
}

/* =========================================
   Header & Navigation
   ========================================= */
.header {
    background-color: var(--color-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-md) 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
}

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

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

.nav-link {
    font-weight: 500;
    transition: color var(--transition);
}

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

/* Mobile Nav */
@media (max-width: 767px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .nav-list {
        gap: var(--spacing-md);
    }
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    /* Fallback gradient */
    background: linear-gradient(135deg, var(--color-primary) 0%, #003b6b 100%);
    /* Modern Swedish Flag SVG Background */
    background-image: url('hero-bg.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 6rem 0;
    text-align: center;
    position: relative;
}

.hero-title {
    color: white;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    /* Subtle shadow for elegance */
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }
}

.hero-subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    color: rgba(255, 255, 255, 0.9);
}

/* =========================================
   Components
   ========================================= */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: bold;
    text-align: center;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: var(--color-primary);
}

.btn-primary:hover {
    background-color: #e5b700;
    transform: translateY(-2px);
}

.card {
    background-color: var(--color-bg);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* =========================================
   Footer
   ========================================= */
.footer {
    background-color: var(--color-text);
    color: white;
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.footer p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* =========================================
   Quiz Module
   ========================================= */
.quiz-container {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.quiz-card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.quiz-progress {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    text-align: right;
}

.quiz-question {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.quiz-image {
    max-width: 100%;
    max-height: 250px;
    margin: 0 auto var(--spacing-md);
    border-radius: var(--border-radius);
    object-fit: contain;
    display: block;
}

.quiz-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 600px) {
    .quiz-options {
        grid-template-columns: 1fr 1fr;
    }
}

.quiz-option {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    background-color: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 60px;
    /* Touch friendly height */
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.quiz-option:hover {
    background-color: #e9ecef;
    transform: translateY(-2px);
}

.quiz-option:active {
    transform: translateY(0);
}

.quiz-option.correct {
    background-color: #d4edda;
    border-color: #28a745;
    color: #155724;
}

.quiz-option.incorrect {
    background-color: #f8d7da;
    border-color: #dc3545;
    color: #721c24;
}

.quiz-result {
    text-align: center;
    padding: var(--spacing-lg);
}

.quiz-score-circle {
    width: 120px;
    height: 120px;
    background-color: var(--color-secondary);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: bold;
    margin: var(--spacing-lg) auto;
}

.quiz-message {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

/* =========================================
   Examples Section
   ========================================= */
.btn-examples {
    background: none;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    transition: all 0.2s;
    width: 100%;
}

.btn-examples:hover {
    background: var(--color-primary);
    color: white;
}

.examples-container {
    margin-top: 0.5rem;
    text-align: left;
    background: #f9f9f9;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    width: 100%;
    border-left: 2px solid var(--color-secondary);
}

.example-row {
    margin-bottom: 0.25rem;
    display: flex;
    justify-content: flex-start;
}

.example-row .label {
    font-weight: bold;
    margin-right: 0.5rem;
    color: var(--color-text-light);
    min-width: 80px;
    flex-shrink: 0;
}