/* CSS-Variablen für Themes */
:root {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-accent: #0066cc;
    --border-color: #dee2e6;
    --border-hover: #adb5bd;
    --button-primary: #0066cc;
    --button-primary-hover: #0052a3;
    --button-secondary: #6c757d;
    --button-secondary-hover: #5a6268;
    --selected-word: #e3f2fd;
    --selected-word-border: #2196f3;
    --gap-word: #fff3e0;
    --gap-word-border: #ff9800;
    --gap-word-revealed: #e8f5e8;
    --gap-word-revealed-border: #4caf50;
    --shadow: rgba(0, 0, 0, 0.1);
    --focus-ring: rgba(0, 102, 204, 0.25);
}

[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --text-accent: #66b3ff;
    --border-color: #555555;
    --border-hover: #777777;
    --button-primary: #66b3ff;
    --button-primary-hover: #4da6ff;
    --button-secondary: #888888;
    --button-secondary-hover: #999999;
    --selected-word: #1a3d5c;
    --selected-word-border: #66b3ff;
    --gap-word: #3d2a1a;
    --gap-word-border: #ffb366;
    --gap-word-revealed: #1a3d1a;
    --gap-word-revealed-border: #66ff66;
    --shadow: rgba(0, 0, 0, 0.3);
    --focus-ring: rgba(102, 179, 255, 0.25);
}

[data-theme="blue"] {
    --bg-primary: #0d1b2a;
    --bg-secondary: #1b263b;
    --bg-tertiary: #415a77;
    --text-primary: #e0e1dd;
    --text-secondary: #9db4c0;
    --text-accent: #52b788;
    --border-color: #415a77;
    --border-hover: #52b788;
    --button-primary: #52b788;
    --button-primary-hover: #40916c;
    --button-secondary: #778da9;
    --button-secondary-hover: #8aa8c2;
    --selected-word: #1b4332;
    --selected-word-border: #52b788;
    --gap-word: #2d1b1b;
    --gap-word-border: #d4a574;
    --gap-word-revealed: #1b3329;
    --gap-word-revealed-border: #74c69d;
    --shadow: rgba(0, 0, 0, 0.4);
    --focus-ring: rgba(82, 183, 136, 0.25);
}

/* Font-Variablen */
.font-inter { font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif; }
.font-crimson { font-family: 'Crimson Text', Georgia, serif; }
.font-opendyslexic { font-family: 'OpenDyslexic', 'Open-Dyslexic', monospace; }
.font-jetbrains { font-family: 'JetBrains Mono', monospace; }

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: all 0.3s ease;
    min-height: 100vh;
}

/* Header und Navigation - nur für Seite 1 und 2 sichtbar */
.header, .text-sections-nav {
    transition: all 0.3s ease;
}

.step-3.active ~ .header,
.step-3.active ~ .text-sections-nav,
body.presentation-mode .header,
body.presentation-mode .text-sections-nav {
    display: none;
}

/* Header */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-accent);
    margin: 0;
}

/* Navigation zwischen Textabschnitten */
.text-sections-nav {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.8rem 2rem;
}

.nav-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-tabs {
    display: flex;
    gap: 0.5rem;
}

.tab-button {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.tab-button:hover {
    background-color: var(--bg-primary);
    border-color: var(--border-hover);
}

.tab-button.active {
    background-color: var(--text-accent);
    color: var(--bg-primary);
    border-color: var(--text-accent);
}

.tab-text {
    flex: 1;
}

.tab-delete {
    opacity: 0;
    transition: opacity 0.2s ease;
    font-size: 1rem;
    line-height: 1;
    padding: 0 0.2rem;
    border-radius: 2px;
    cursor: pointer;
}

.tab-button:hover .tab-delete {
    opacity: 0.7;
}

.tab-delete:hover {
    opacity: 1 !important;
    background-color: rgba(220, 53, 69, 0.2);
    color: #dc3545;
}

.add-section-btn {
    background-color: transparent;
    border: 2px dashed var(--border-color);
    border-radius: 6px;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.add-section-btn:hover {
    border-color: var(--text-accent);
    color: var(--text-accent);
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Steps */
.step {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.step-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 4px 20px var(--shadow);
}

.step h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-accent);
    text-align: center;
}

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

/* Texteingabe */
#text-input {
    width: 100%;
    min-height: 300px;
    padding: 1.5rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: inherit;
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    transition: all 0.2s ease;
}

#text-input:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

#text-input::placeholder {
    color: var(--text-secondary);
}

.demo-controls {
    margin-top: 1rem;
    text-align: center;
}

.demo-controls button {
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    min-width: auto;
}

/* Design-Einstellungen auf Seite 2 */
.design-settings-section {
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 2px solid var(--border-color);
}

.design-settings-section h3 {
    color: var(--text-accent);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.1rem;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.setting-card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    transition: all 0.2s ease;
}

.setting-card:hover {
    border-color: var(--text-accent);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px var(--shadow);
}

.setting-card label {
    font-weight: 600;
    color: var(--text-accent);
    font-size: 0.9rem;
}

.setting-card select {
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.setting-card select:hover {
    border-color: var(--border-hover);
}

.setting-card select:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.font-size-control {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.font-size-control input[type="range"] {
    flex: 1;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.4rem 0.6rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.font-size-control input[type="range"]:hover {
    border-color: var(--border-hover);
}

.font-size-control input[type="range"]:focus {
    outline: none;
    border-color: var(--text-accent);
    box-shadow: 0 0 0 3px var(--focus-ring);
}

.font-size-control span {
    min-width: 40px;
    font-weight: 600;
    color: var(--text-accent);
    font-size: 0.85rem;
}

.word-selection-section {
    margin-top: 2rem;
}

.word-selection-section h3 {
    color: var(--text-accent);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.word-selection-section h4 {
    color: var(--text-accent);
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}
.text-preview {
    background-color: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    max-height: 400px;
    overflow-y: auto;
    word-spacing: 0.2em;
}

.word {
    cursor: pointer;
    padding: 0.1rem 0.2rem;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-block;
    margin: 0.1rem;
}

.word:hover {
    background-color: var(--bg-tertiary);
}

.word.selected {
    background-color: var(--selected-word);
    border: 2px solid var(--selected-word-border);
    font-weight: 500;
    transform: scale(1.02);
}

.selected-words {
    margin-bottom: 2rem;
}

.selected-words h3 {
    margin-bottom: 1rem;
    color: var(--text-accent);
}

.words-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    min-height: 50px;
    padding: 1rem;
    background-color: var(--bg-primary);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
}

.selected-word-tag {
    background-color: var(--selected-word);
    border: 1px solid var(--selected-word-border);
    border-radius: 20px;
    padding: 0.3rem 0.8rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

.remove-word {
    background: none;
    border: none;
    color: var(--selected-word-border);
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.remove-word:hover {
    background-color: var(--selected-word-border);
    color: var(--bg-primary);
}

/* Schritt 3 - Präsentationsmodus */
.step-3 {
    background-color: var(--bg-primary);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    position: relative;
}

.step-3.active {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
}

/* Versteckter Zurück-Button */
.hidden-back-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    background-color: var(--button-secondary);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
    cursor: pointer;
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px var(--shadow);
}

.hidden-back-btn:hover {
    opacity: 0.9;
    transform: scale(1.1);
    background-color: var(--button-secondary-hover);
    box-shadow: 0 4px 12px var(--shadow);
}

.step-3:hover .hidden-back-btn {
    opacity: 0.4;
}

/* Text-Navigation in Präsentation */
.presentation-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.nav-btn {
    background-color: var(--button-primary);
    color: var(--bg-primary);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px var(--shadow);
}

.nav-btn:hover {
    background-color: var(--button-primary-hover);
    transform: scale(1.1);
    box-shadow: 0 4px 10px var(--shadow);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 6px var(--shadow);
}

.text-indicator {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-accent);
    min-width: 80px;
    text-align: center;
    background-color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 2px solid var(--border-color);
}

/* Präsentations-Container */
.presentation-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 3rem;
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Präsentations-Text */
.presentation-text {
    flex: 1;
    background-color: var(--bg-primary);
    border-radius: 12px;
    padding: 3rem;
    font-size: 1.4em;
    line-height: 1.8;
    word-spacing: 0.3em;
    overflow-y: auto;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 20px var(--shadow);
}

/* Wörter-Sammlung */
.word-collection {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 20px var(--shadow);
    min-height: 150px;
}

.collection-header {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-accent);
    margin-bottom: 1rem;
    text-align: center;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.hidden-words-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    align-items: center;
    min-height: 60px;
    margin-bottom: 0.5rem;
}

/* Präsentations-Gap-Words */
.presentation-text .gap-word {
    background-color: var(--gap-word);
    border: 3px solid var(--gap-word-border);
    border-radius: 8px;
    padding: 0.3rem 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    margin: 0.2rem;
    font-weight: 600;
    font-size: 1.05em;
    position: relative;
    overflow: hidden;
}

.presentation-text .gap-word:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 16px var(--shadow);
    border-color: var(--text-accent);
}

.presentation-text .gap-word.revealed {
    background-color: var(--gap-word-revealed);
    border-color: var(--gap-word-revealed-border);
    animation: revealWordPresentation 0.6s ease-out;
}

@keyframes revealWordPresentation {
    0% { transform: scale(1.3) rotateY(0deg); opacity: 0.7; }
    50% { transform: scale(1.4) rotateY(180deg); opacity: 0.3; }
    100% { transform: scale(1) rotateY(0deg); opacity: 1; }
}

.presentation-text .gap-word.hidden {
    color: transparent;
    user-select: none;
}

.presentation-text .gap-word.hidden::after {
    content: "___";
    color: var(--gap-word-border);
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.2em;
    font-weight: bold;
}

/* Versteckte Wörter in der Sammlung */
.collected-word {
    background-color: var(--selected-word);
    border: 2px solid var(--selected-word-border);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: default;
    opacity: 0.7;
}

.collected-word.used {
    opacity: 0.3;
    text-decoration: line-through;
    background-color: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* Buttons */
.step-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

button {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 160px;
    justify-content: center;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--button-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--button-secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

button:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--focus-ring);
}

/* Scrollbar-Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background-color: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-hover);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

/* Optimierungen für große Bildschirme */
@media (min-width: 1400px) {
    .main-container {
        max-width: 1400px;
        padding: 3rem;
    }
    
    .step-content {
        padding: 3rem;
    }
    
    .header {
        padding: 2rem 3rem;
    }
    
    .text-sections-nav {
        padding: 1.5rem 3rem;
    }
}

/* Bessere Lesbarkeit auf Projektoren */
@media (min-width: 1200px) {
    body {
        font-size: 20px;
    }
    
    .header h1 {
        font-size: 2.5rem;
    }
    
    .step h2 {
        font-size: 2rem;
    }
    
    button {
        font-size: 1.1rem;
        padding: 1rem 2.5rem;
    }
    
    .word, .gap-word {
        font-size: 1.05em;
    }
}

/* Footer Styles */
footer {
    margin-top: 2rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.impressum p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.impressum a {
    color: var(--text-accent);
    text-decoration: none;
    margin: 0 0.5rem;
}

.impressum a:hover {
    text-decoration: underline;
}