/* ----- Apple-inspirierte Farbpalette ----- */
:root {
    /* Bestehende Farbpalette */
    --apple-blue: #007aff;
    --apple-light-blue: #5ac8fa;
    --apple-green: #34c759;
    --apple-red: #ff3b30;
    --apple-orange: #ff9500;
    --apple-yellow: #ffcc00;
    --apple-purple: #af52de;
    --apple-pink: #ff2d55;
    
    --apple-gray-1: #8e8e93;
    --apple-gray-2: #aeaeb2;
    --apple-gray-3: #c7c7cc;
    --apple-gray-4: #d1d1d6;
    --apple-gray-5: #e5e5ea;
    --apple-gray-6: #f2f2f7;
    
    /* Light Mode (Standard) */
    --text-primary: #000000;
    --text-secondary: #3c3c43;
    --text-tertiary: #48484a;
    --text-quaternary: #8e8e93;
    
    --background-primary: #ffffff;
    --background-secondary: #f2f2f7;
    --background-tertiary: #e5e5ea;
    
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.15);
    
    --border-color: #d1d1d6;
    --card-border: #d1d1d6;
    
    --border-radius-small: 6px;
    --border-radius-medium: 10px;
    --border-radius-large: 14px;
    
    --spacing-xs: 4px;
    --spacing-s: 8px;
    --spacing-m: 16px;
    --spacing-l: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    
    --transition-short: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-medium: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-long: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    
    /* Color transition for smooth dark mode toggle */
    --color-transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Dark Mode */
.dark-mode {
    --text-primary: #ffffff;
    --text-secondary: #f2f2f7;
    --text-tertiary: #e5e5ea;
    --text-quaternary: #aeaeb2;
    
    --background-primary: #1c1c1e;
    --background-secondary: #2c2c2e;
    --background-tertiary: #3a3a3c;
    
    --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.6);
    
    --border-color: #38383a;
    --card-border: #38383a;
    
    /* Angepasste Farben für bessere Lesbarkeit im Dark Mode */
    --apple-gray-5: #3a3a3c;
    --apple-gray-6: #2c2c2e;
}

/* System preference detection */
@media (prefers-color-scheme: dark) {
    :root:not(.light-mode) {
        --text-primary: #ffffff;
        --text-secondary: #f2f2f7;
        --text-tertiary: #e5e5ea;
        --text-quaternary: #aeaeb2;
        
        --background-primary: #1c1c1e;
        --background-secondary: #2c2c2e;
        --background-tertiary: #3a3a3c;
        
        --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.2);
        --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.4);
        --shadow-dark: 0 10px 30px rgba(0, 0, 0, 0.6);
        
        --border-color: #38383a;
        --card-border: #38383a;
        
        --apple-gray-5: #3a3a3c;
        --apple-gray-6: #2c2c2e;
    }
}

/* ----- Reset & Basis ----- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--background-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    touch-action: manipulation;
    height: 100%;
    transition: var(--color-transition);
}

body {
    height: 100%;
    overscroll-behavior-y: none;
    transition: var(--color-transition);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-m);
    color: var(--text-primary);
    transition: var(--color-transition);
}

h1 {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.5rem;
    color: var(--text-secondary);
}

h3 {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

p {
    margin-bottom: var(--spacing-m);
    color: var(--text-primary);
    transition: var(--color-transition);
}

a {
    color: var(--apple-blue);
    text-decoration: none;
    transition: var(--transition-short);
}

a:hover {
    opacity: 0.8;
}

input, button, select, textarea {
    font-family: inherit;
    font-size: 1rem;
    transition: var(--color-transition);
}

button {
    cursor: pointer;
}

/* Vue-spezifische Styles */
[v-cloak] {
    display: none;
}

/* ----- Layout ----- */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-m);
    background-color: var(--background-primary);
    min-height: 100%;
    box-shadow: var(--shadow-light);
    transition: var(--color-transition);
}

.view {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-l);
}

.panel {
    background-color: var(--background-secondary);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-m);
    margin-bottom: var(--spacing-l);
    box-shadow: var(--shadow-light);
    transition: var(--color-transition);
}

/* ----- Header & Navigation ----- */
.app-header {
    position: sticky;
    top: 0;
    padding: var(--spacing-m) 0;
    background-color: var(--background-primary);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-l);
    transition: var(--color-transition);
}

.app-header h1 {
    text-align: center;
    margin-bottom: var(--spacing-m);
}

.app-header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-m);
}

.app-header-top h1 {
    margin-bottom: 0;
}

.theme-toggle {
    display: flex;
    align-items: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.2rem;
    padding: var(--spacing-xs);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-short);
}

.theme-toggle:hover {
    background-color: var(--background-tertiary);
}

.theme-toggle .icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

nav ul {
    display: flex;
    list-style: none;
    justify-content: center;
    padding: 0;
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
}

nav li {
    margin: 0 var(--spacing-xs);
}

nav a {
    display: block;
    padding: var(--spacing-s) var(--spacing-m);
    border-radius: var(--border-radius-medium);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-short);
}

nav a.active {
    background-color: var(--apple-blue);
    color: white;
}

/* ----- Karteikarten ----- */
.card-container {
    perspective: 1000px;
    margin-bottom: var(--spacing-l);
    height: 300px;
}

.card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s;
    cursor: pointer;
    box-shadow: var(--shadow-medium);
    border-radius: var(--border-radius-large);
}

.card-container.flipped .card {
    transform: rotateY(180deg);
}

.card-front, .card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-l);
    border-radius: var(--border-radius-large);
    transition: var(--color-transition);
}

.card-front {
    background-color: var(--background-primary);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
}

.card-back {
    background-color: var(--background-primary);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    transform: rotateY(180deg);
}

.card p {
    font-size: 2rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: var(--spacing-m);
}

.card small {
    font-size: 1rem;
    text-align: center;
    opacity: 0.9;
    color: var(--text-secondary);
}

.controls {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-m);
    flex-wrap: wrap;
    gap: var(--spacing-s);
}

.control-button {
    padding: var(--spacing-m) var(--spacing-l);
    border: none;
    background-color: var(--apple-blue);
    color: white;
    border-radius: var(--border-radius-medium);
    font-weight: 500;
    transition: var(--transition-short);
    margin: 0 var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    min-height: 48px;
}

.control-button:hover:not(:disabled) {
    background-color: #0062cc;
}

.control-button:disabled {
    background-color: var(--apple-gray-3);
    cursor: not-allowed;
}

.flip-button {
    background-color: var(--apple-purple);
}

.flip-button:hover {
    background-color: #9541c0;
}

.toggle-container {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-s);
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--color-transition);
}

.toggle-container input {
    margin-right: var(--spacing-s);
}

/* Mobile Swipe Hint */
.mobile-hint {
    text-align: center;
    margin: var(--spacing-s) 0;
    color: var(--text-quaternary);
    font-size: 0.9rem;
    transition: var(--color-transition);
}

/* ----- Multiple-Choice ----- */
.question-container {
    margin-bottom: var(--spacing-l);
}

.question {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-l);
    text-align: center;
    color: var(--text-primary);
    transition: var(--color-transition);
}

.options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-m);
    margin-bottom: var(--spacing-l);
}

.options button {
    width: 100%;
    padding: var(--spacing-l);
    border: 2px solid var(--border-color);
    background-color: var(--background-primary);
    color: var(--text-primary);
    border-radius: var(--border-radius-medium);
    font-size: 1.2rem;
    transition: var(--transition-short);
    min-height: 70px;
}

.options button:hover:not(:disabled) {
    border-color: var(--apple-blue);
}

.options button.selected {
    border-color: var(--apple-blue);
    background-color: rgba(0, 122, 255, 0.1);
}

.options button.correct {
    border-color: var(--apple-green);
    background-color: rgba(52, 199, 89, 0.1);
}

.options button.incorrect {
    border-color: var(--apple-red);
    background-color: rgba(255, 59, 48, 0.1);
}

.feedback {
    text-align: center;
    margin-bottom: var(--spacing-l);
    font-weight: 500;
    font-size: 1.2rem;
}

.correct-feedback {
    color: var(--apple-green);
}

.incorrect-feedback {
    color: var(--apple-red);
}

/* ----- Schreibübungen ----- */
.writing-exercise {
    margin-bottom: var(--spacing-l);
}

.prompt {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-m);
    text-align: center;
    color: var(--text-primary);
    transition: var(--color-transition);
}

input[type="text"] {
    width: 100%;
    padding: var(--spacing-m);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-medium);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-m);
    transition: var(--transition-short);
    background-color: var(--background-primary);
    color: var(--text-primary);
}

input[type="text"]:focus {
    border-color: var(--apple-blue);
    outline: none;
}

.result {
    text-align: center;
    padding: var(--spacing-m);
    border-radius: var(--border-radius-medium);
    margin-bottom: var(--spacing-m);
    font-weight: 500;
}

.result.correct {
    background-color: rgba(52, 199, 89, 0.1);
    color: var(--apple-green);
}

.result.incorrect {
    background-color: rgba(255, 59, 48, 0.1);
    color: var(--apple-red);
}

/* ----- Formular-Elemente ----- */
.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-m);
    margin-bottom: var(--spacing-m);
}

.form-group {
    flex: 1;
    min-width: 250px;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--color-transition);
}

/* ----- Buttons ----- */
.action-button, .primary-button {
    display: block;
    width: 100%;
    padding: var(--spacing-m);
    border: none;
    background-color: var(--apple-blue);
    color: white;
    font-weight: 500;
    border-radius: var(--border-radius-medium);
    font-size: 1.1rem;
    transition: var(--transition-short);
    margin-bottom: var(--spacing-m);
    box-shadow: var(--shadow-light);
    min-height: 52px;
}

.action-button:hover, .primary-button:hover {
    background-color: #0062cc;
}

/* ----- Verwaltung ----- */
.vocabulary-management {
    margin-bottom: var(--spacing-xxl);
}

.search {
    margin-bottom: var(--spacing-m);
}

.search input {
    width: 100%;
}

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th, td {
    padding: var(--spacing-m);
    border-bottom: 1px solid var(--border-color);
    transition: var(--color-transition);
    color: var(--text-primary);
}

th {
    background-color: var(--background-secondary);
    font-weight: 600;
}

.actions {
    display: flex;
    gap: var(--spacing-s);
    justify-content: flex-end;
}

.icon-button {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-short);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-primary);
}

.icon-button:hover {
    background-color: var(--apple-gray-5);
}

.icon-button.edit:hover {
    background-color: rgba(0, 122, 255, 0.1);
}

.icon-button.delete:hover {
    background-color: rgba(255, 59, 48, 0.1);
}

.hidden {
    display: none;
}

/* ----- Import / Export ----- */
.import-export {
    margin-bottom: var(--spacing-l);
}

.buttons {
    display: flex;
    gap: var(--spacing-m);
    flex-wrap: wrap;
}

.buttons button, .buttons .button {
    flex: 1;
    min-width: 200px;
    text-align: center;
    padding: var(--spacing-m);
    background-color: var(--apple-blue);
    color: white;
    border: none;
    border-radius: var(--border-radius-medium);
    font-weight: 500;
    transition: var(--transition-short);
    cursor: pointer;
    font-size: 1rem;
}

.hint {
    font-size: 0.9rem;
    color: var(--text-quaternary);
    margin-top: var(--spacing-s);
    transition: var(--color-transition);
}

/* ----- Modal ----- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-m);
}

.modal-content {
    background-color: var(--background-primary);
    padding: var(--spacing-l);
    border-radius: var(--border-radius-large);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transition: var(--color-transition);
    color: var(--text-primary);
}

.close {
    position: absolute;
    top: var(--spacing-s);
    right: var(--spacing-s);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-primary);
}

.close:hover {
    background-color: var(--apple-gray-5);
}

.modal-buttons {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-m);
    margin-top: var(--spacing-l);
}

/* ----- Fortschrittsanzeige ----- */
.progress {
    width: 100%;
    height: 8px;
    background-color: var(--apple-gray-5);
    border-radius: 4px;
    margin-bottom: var(--spacing-m);
    position: relative;
    overflow: hidden;
    transition: var(--color-transition);
}

.progress-bar {
    height: 100%;
    background-color: var(--apple-blue);
    width: 0;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress span {
    display: block;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-quaternary);
    transition: var(--color-transition);
}

/* ----- Leerer Zustand ----- */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    background-color: var(--background-secondary);
    border-radius: var(--border-radius-medium);
    color: var(--text-quaternary);
    transition: var(--color-transition);
}

/* ----- Fußzeile ----- */
footer {
    text-align: center;
    padding: var(--spacing-l);
    color: var(--text-quaternary);
    font-size: 0.9rem;
    transition: var(--color-transition);
}

/* ----- Responsive Design ----- */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-s);
    }
    
    .card {
        height: 250px;
    }
    
    .card p {
        font-size: 1.5rem;
    }
    
    .options {
        grid-template-columns: 1fr;
    }
    
    .form-group {
        min-width: 100%;
    }
    
    .buttons button, .buttons .button {
        width: 100%;
    }
    
    nav ul {
        justify-content: flex-start;
        padding-bottom: var(--spacing-xs);
    }
    
    nav a {
        padding: var(--spacing-s) var(--spacing-m);
        white-space: nowrap;
    }
    
    .controls {
        flex-direction: column;
        align-items: center;
    }
    
    .control-button {
        width: 100%;
        margin: var(--spacing-xs) 0;
    }
    
    .options button {
        min-height: 60px;
        font-size: 1rem;
        padding: var(--spacing-m);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    h2 {
        font-size: 1.3rem;
    }
    
    .card p {
        font-size: 1.3rem;
    }
    
    .question {
        font-size: 1.2rem;
    }
}																																																																																																				

.danger-button {
    display: block;
    width: 100%;
    padding: var(--spacing-m);
    border: none;
    background-color: var(--apple-red); /* Red color for danger */
    color: white;
    font-weight: 500;
    border-radius: var(--border-radius-medium);
    font-size: 1.1rem;
    transition: var(--transition-short);
    margin-bottom: var(--spacing-m);
    box-shadow: var(--shadow-light);
    min-height: 52px;
}

.danger-button:hover:not(:disabled) {
    background-color: #e6352b; /* Darker red on hover */
}

.danger-button:disabled {
    background-color: var(--apple-gray-3);
    cursor: not-allowed;
    opacity: 0.7;
}
																																																																																																									  
																																																																																																									  /* Tastaturkürzel-Info */
.keyboard-shortcuts-info {
    text-align: center;
    margin: var(--spacing-m) 0;
    color: var(--text-quaternary);
    font-size: 0.9rem;
    transition: var(--color-transition);
}

.kbd {
    display: inline-block;
    padding: 2px 6px;
    border: 1px solid var(--border-color);
    border-radius: 3px;
    background-color: var(--background-secondary);
    font-family: monospace;
    font-size: 0.85rem;
    box-shadow: 0 1px 1px rgba(0,0,0,0.1);
    transition: var(--color-transition);
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .keyboard-shortcuts-info {
        display: none; /* Auf mobilen Geräten ausblenden */
    }
}
																																																																																																																																						  
																																																																																																																																						  /* ----- Statistik-Styles ----- */
.statistics-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-l);
}

.statistics-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-m);
    margin-bottom: var(--spacing-m);
}

.stat-card {
    background-color: var(--background-primary);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-m);
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: var(--color-transition);
}

.stat-card h4 {
    margin-bottom: var(--spacing-s);
    color: var(--text-secondary);
    font-size: 1rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.stat-label {
    color: var(--text-quaternary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.stat-percentage {
    font-weight: 600;
    color: var(--apple-blue);
    font-size: 1.2rem;
}

/* Chart */
.progress-container {
    margin-bottom: var(--spacing-m);
}

.progress-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 200px;
    margin-bottom: var(--spacing-m);
    padding-bottom: var(--spacing-m);
    border-bottom: 1px solid var(--border-color);
}

.chart-bar {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 var(--spacing-xs);
}

.bar-value {
    width: 80%;
    background-color: var(--apple-blue);
    border-radius: var(--border-radius-small) var(--border-radius-small) 0 0;
    transition: height 0.5s ease;
    min-height: 4px;
}

.bar-label {
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--text-quaternary);
}

.chart-info {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-quaternary);
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-s);
}

.activity-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-s);
    background-color: var(--background-primary);
    border-radius: var(--border-radius-medium);
    transition: var(--color-transition);
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-m);
    background-color: var(--background-secondary);
}

.activity-icon.cards {
    background-color: rgba(175, 82, 222, 0.2); /* Purple */
}

.activity-icon.multipleChoice {
    background-color: rgba(0, 122, 255, 0.2); /* Blue */
}

.activity-icon.writing {
    background-color: rgba(255, 149, 0, 0.2); /* Orange */
}

.activity-details {
    flex: 1;
}

.activity-title {
    font-weight: 500;
    margin-bottom: 0;
    color: var(--text-primary);
}

.activity-time {
    font-size: 0.8rem;
    color: var(--text-quaternary);
    margin-bottom: 0;
}

.activity-result {
    padding: var(--spacing-xs) var(--spacing-s);
    border-radius: var(--border-radius-small);
    font-weight: 600;
}

.activity-result.success {
    color: var(--apple-green);
}

.activity-result:not(.success) {
    color: var(--apple-red);
}

.success-icon, .error-icon {
    font-size: 1.2rem;
}

.empty-state.small {
    padding: var(--spacing-m);
    font-size: 0.9rem;
}

/* Responsive Anpassungen */
@media (max-width: 768px) {
    .statistics-cards {
        grid-template-columns: 1fr;
    }
    
    .progress-chart {
        height: 150px;
    }
    
    .activity-icon {
        width: 32px;
        height: 32px;
        margin-right: var(--spacing-s);
    }
    
    .activity-title {
        font-size: 0.9rem;
    }
}
																																																																																																																																																																					
																																																																																																																																																																					/* ----- Matching Game Styles ----- */
.matching-intro {
    text-align: center;
    margin-bottom: var(--spacing-l);
}

.difficulty-selection {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--background-secondary);
    border-radius: var(--border-radius-medium);
    padding: var(--spacing-m);
    margin-top: var(--spacing-l);
}

.difficulty-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-m);
    margin-top: var(--spacing-m);
}

.difficulty-button {
    margin-bottom: 0;
}

.matching-game {
    position: relative;
}

.matching-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-m);
    padding: var(--spacing-s) var(--spacing-m);
    background-color: var(--background-secondary);
    border-radius: var(--border-radius-medium);
    font-weight: 500;
}

.timer, .attempts {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.matching-grid {
    display: grid;
    gap: var(--spacing-s);
    margin-bottom: var(--spacing-l);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-5 {
    grid-template-columns: repeat(5, 1fr);
}

.grid-6 {
    grid-template-columns: repeat(6, 1fr);
}

.matching-card {
    aspect-ratio: 3/2;
    border-radius: var(--border-radius-medium);
    background-color: var(--background-secondary);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-medium);
    box-shadow: var(--shadow-light);
}

.matching-card:hover:not(.matched) {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.matching-card.selected {
    border: 2px solid var(--apple-blue);
}

.matching-card.matched {
    cursor: default;
    opacity: 0.7;
}

.matching-card.german {
    border-left: 4px solid var(--apple-purple);
}

.matching-card.english {
    border-left: 4px solid var(--apple-orange);
}

.card-inner {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-s);
}

.card-content {
    font-size: 1rem;
    text-align: center;
    line-height: 1.3;
    word-break: break-word;
    hyphens: auto;
}

/* Results display */
.matching-results {
    text-align: center;
    padding: var(--spacing-l);
    background-color: var(--background-secondary);
    border-radius: var(--border-radius-medium);
    max-width: 500px;
    margin: 0 auto;
}

.matching-results h3 {
    margin-bottom: var(--spacing-l);
    font-size: 1.5rem;
    color: var(--apple-green);
}

.results-details {
    margin-bottom: var(--spacing-l);
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-m);
    padding: var(--spacing-s) 0;
    border-bottom: 1px solid var(--border-color);
}

.result-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.result-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Animation for matched cards */
@keyframes match-success {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); background-color: rgba(52, 199, 89, 0.2); }
    100% { transform: scale(1); }
}

.matching-card.matched {
    animation: match-success 0.5s ease-out;
}

/* Responsive styles */
@media (max-width: 768px) {
    .grid-4, .grid-5, .grid-6 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .card-content {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .grid-4, .grid-5, .grid-6 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .matching-header {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
}