/* ================================================
   Europa Überlebens-Fibel - Stylesheet
   Premium, illustrated design with nature theme
   ================================================ */

/* CSS Variables */
:root {
    /* Colors - Nature inspired palette */
    --color-primary: #2d5a27;
    --color-primary-light: #4a8f40;
    --color-primary-dark: #1e3d1a;
    --color-secondary: #8b4513;
    --color-secondary-light: #a0522d;
    --color-accent: #daa520;
    --color-accent-light: #ffd700;

    /* Background colors */
    --bg-primary: #fdfcf7;
    --bg-secondary: #f5f3e8;
    --bg-tertiary: #e8e4d4;
    --bg-dark: #1a1a1a;

    /* Text colors */
    --text-primary: #2c2c2c;
    --text-secondary: #555555;
    --text-light: #777777;
    --text-inverse: #ffffff;

    /* Status colors */
    --color-danger: #c0392b;
    --color-warning: #e67e22;
    --color-success: #27ae60;
    --color-info: #3498db;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Typography */
    --font-heading: 'Merriweather', Georgia, serif;
    --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 15px 50px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a1a1a;
        --bg-secondary: #242424;
        --bg-tertiary: #2d2d2d;
        --text-primary: #f0f0f0;
        --text-secondary: #b0b0b0;
        --text-light: #888888;
        --color-primary: #4a8f40;
        --color-primary-light: #5cb85c;
    }
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

/* ================================================
   Language Bar
   ================================================ */
.language-bar {
    background: var(--color-primary-dark);
    padding: var(--space-sm) var(--space-lg);
    text-align: right;
}

.language-select {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-inverse);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-select:hover {
    background: rgba(255, 255, 255, 0.2);
}

.language-select option {
    background: var(--bg-dark);
    color: var(--text-inverse);
}

/* ================================================
   Hero Section
   ================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, #2d5a27 0%, #1e3d1a 50%, #0f1f0d 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--space-xl);
}

.hero-icon {
    font-size: 5rem;
    margin-bottom: var(--space-lg);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.hero h1 {
    color: var(--text-inverse);
    font-size: 3.5rem;
    margin-bottom: var(--space-lg);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.4rem;
    margin-bottom: var(--space-2xl);
    font-weight: 400;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-full);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(218, 165, 32, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-inverse);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-inverse);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

.scroll-arrow {
    font-size: 1.5rem;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ================================================
   Warning Banner
   ================================================ */
.warning-banner {
    background: linear-gradient(90deg, var(--color-warning), #d35400);
    color: var(--text-inverse);
    padding: var(--space-md) 0;
}

.warning-banner .container {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.warning-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.warning-banner p {
    margin: 0;
    font-size: 0.95rem;
}

/* ================================================
   Main Navigation
   ================================================ */
.main-nav {
    position: sticky;
    top: 0;
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    padding: var(--space-sm) 0;
}

.main-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
}

.nav-icon {
    font-size: 1.5rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.nav-menu a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-menu a:hover {
    background: var(--bg-secondary);
    color: var(--color-primary);
}

.nav-search {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.nav-search input {
    border: none;
    background: transparent;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.9rem;
    width: 150px;
    outline: none;
}

.nav-search .search-btn {
    background: var(--color-primary);
    border: none;
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.nav-search .search-btn:hover {
    background: var(--color-primary-light);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--space-md);
        box-shadow: var(--shadow-lg);
        display: none;
    }

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

    .nav-search {
        display: none;
    }
}

/* ================================================
   Section Titles
   ================================================ */
.section-title {
    text-align: center;
    margin-bottom: var(--space-md);
    color: var(--color-primary-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--space-2xl);
}

/* ================================================
   Chapters Overview
   ================================================ */
.chapters-overview {
    padding: var(--space-3xl) 0;
    background: var(--bg-secondary);
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--space-lg);
}

.chapter-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    background: var(--bg-primary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-decoration: none;
    border-left: 4px solid transparent;
}

.chapter-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Chapter colors */
.chapter-plants {
    border-left-color: #27ae60;
}

.chapter-plants:hover {
    background: linear-gradient(135deg, #f0fff0 0%, var(--bg-primary) 100%);
}

.chapter-animals {
    border-left-color: #8b4513;
}

.chapter-animals:hover {
    background: linear-gradient(135deg, #faf0e6 0%, var(--bg-primary) 100%);
}

.chapter-europe {
    border-left-color: #3498db;
}

.chapter-europe:hover {
    background: linear-gradient(135deg, #f0f8ff 0%, var(--bg-primary) 100%);
}

.chapter-survival {
    border-left-color: #e67e22;
}

.chapter-survival:hover {
    background: linear-gradient(135deg, #fff5eb 0%, var(--bg-primary) 100%);
}

.chapter-health {
    border-left-color: #e74c3c;
}

.chapter-health:hover {
    background: linear-gradient(135deg, #fff0f0 0%, var(--bg-primary) 100%);
}

.chapter-water {
    border-left-color: #00bcd4;
}

.chapter-water:hover {
    background: linear-gradient(135deg, #e0f7fa 0%, var(--bg-primary) 100%);
}

.chapter-fire {
    border-left-color: #ff5722;
}

.chapter-fire:hover {
    background: linear-gradient(135deg, #fff3e0 0%, var(--bg-primary) 100%);
}

.chapter-tools {
    border-left-color: #607d8b;
}

.chapter-tools:hover {
    background: linear-gradient(135deg, #eceff1 0%, var(--bg-primary) 100%);
}

.chapter-navigation {
    border-left-color: #9c27b0;
}

.chapter-navigation:hover {
    background: linear-gradient(135deg, #f3e5f5 0%, var(--bg-primary) 100%);
}

.chapter-communication {
    border-left-color: #00bcd4;
}

.chapter-communication:hover {
    background: linear-gradient(135deg, #e0f7fa 0%, var(--bg-primary) 100%);
}

.chapter-psychology {
    border-left-color: #673ab7;
}

.chapter-psychology:hover {
    background: linear-gradient(135deg, #ede7f6 0%, var(--bg-primary) 100%);
}

.chapter-law {
    border-left-color: #795548;
}

.chapter-law:hover {
    background: linear-gradient(135deg, #efebe9 0%, var(--bg-primary) 100%);
}

.chapter-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.chapter-content {
    flex: 1;
}

.chapter-content h3 {
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
}

.chapter-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.chapter-count {
    display: inline-block;
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-light);
}

.chapter-arrow {
    font-size: 1.5rem;
    color: var(--text-light);
    transition: transform var(--transition-fast);
}

.chapter-card:hover .chapter-arrow {
    transform: translateX(5px);
    color: var(--color-primary);
}

/* ================================================
   Countries Section
   ================================================ */
.countries-section {
    padding: var(--space-3xl) 0;
    background: var(--bg-primary);
}

.countries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-2xl);
}

.country-region h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--space-md);
    font-size: 1.2rem;
    border-bottom: 2px solid var(--bg-tertiary);
    padding-bottom: var(--space-sm);
}

.country-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.country-cards {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.country-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--bg-tertiary);
}

.country-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.country-flag {
    font-size: 3rem;
}

.country-name {
    flex: 1;
    font-weight: 600;
}

.country-status {
    font-size: 0.85rem;
    color: var(--text-light);
}

.country-complete {
    border-left: 4px solid var(--color-success);
}

.country-complete .country-status {
    color: var(--color-success);
}

.country-progress {
    border-left: 4px solid var(--color-warning);
}

.country-progress .country-status {
    color: var(--color-warning);
}

.country-pending {
    border-left: 4px solid var(--bg-tertiary);
    opacity: 0.7;
}

.country-pending:hover {
    opacity: 1;
}

/* ================================================
   Quick Tips
   ================================================ */
.quick-tips {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
}

.tip-card {
    background: var(--bg-primary);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.tip-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.tip-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--text-inverse);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: var(--space-md);
}

.tip-card h3 {
    margin-bottom: var(--space-sm);
    color: var(--color-primary-dark);
}

.tip-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* ================================================
   Footer
   ================================================ */
.main-footer {
    background: var(--bg-dark);
    color: var(--text-inverse);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-section h4 {
    color: var(--color-accent);
    margin-bottom: var(--space-md);
    font-size: 1.1rem;
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--space-sm);
}

.footer-section ul a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-section ul a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-xl);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    margin-bottom: var(--space-sm);
}

/* ================================================
   Print Styles
   ================================================ */
@media print {

    .language-bar,
    .main-nav,
    .hero,
    .warning-banner,
    .quick-tips,
    .main-footer,
    .btn {
        display: none !important;
    }

    body {
        background: white;
        color: black;
        font-size: 12pt;
    }

    .chapter-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ================================================
   Responsive Design
   ================================================ */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .chapters-grid {
        grid-template-columns: 1fr;
    }

    .chapter-card {
        padding: var(--space-lg);
    }

    .chapter-icon {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .warning-banner .container {
        flex-direction: column;
        text-align: center;
    }
}