/* ============================================
   ENZYM-MASTERCLASS - Zentrales Stylesheet
   ============================================
   Alle Farben, Fonts und Styles sind über 
   CSS-Variablen anpassbar.
   ============================================ */

/* -------------------------
   CSS VARIABLEN
   ------------------------- */
:root {
    /* Farben - Hauptfarben */
    --color-primary: #003834;           /* Dunkelblau - Hauptfarbe */
    --color-accent: #05655E;            /* Cyan - Akzentfarbe */
    --color-bg-light: #F0F4F8;          /* Hellgrauer Hintergrund */
    --color-bg-dark: #003834;           /* Dunkler Hintergrund (= primary) */
    --color-text: #334E68;              /* Textfarbe */
    --color-text-light: #F0F4F8;        /* Heller Text auf dunklem Hintergrund */
    --color-white: #ffffff;
    
    /* Farben - Akzente & Status */
    --color-warning: #FF4136;           /* Rot - Warnung/Gefahr */
    --color-tip: #F0B429;               /* Gelb/Gold - Tipps */
    --color-border: #E1E8ED;            /* Border-Farbe */
    --color-grid: #E1E8ED;              /* Grid-Linien Hintergrund */
    
    /* Transparente Varianten (angepasst an primary/accent) */
    --color-primary-10: rgba(0, 56, 52, 0.1);      /* primary mit 10% */
    --color-primary-dark: #002624;                  /* Dunklere Primary-Variante */
    --color-accent-30: rgba(5, 101, 94, 0.3);      /* accent mit 30% */
    --color-accent-hover: #044d47;                  /* Dunklere Accent-Variante für Hover */
    --color-accent-light: #4ECDC4;                  /* Helle Accent-Variante für dunkle Hintergründe */
    --color-warning-10: rgba(255, 65, 54, 0.1);
    --color-warning-dark: #8B0000;                  /* Dunkles Rot für Text */
    
    /* Typografie */
    --font-family: 'Work Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 48px;
    --font-size-5xl: 64px;
    --font-size-hero: 72px;
    
    /* Spacing */
    --slide-padding: 60px 80px;
    --slide-padding-mobile: 30px 20px;
    --slide-max-width: 1280px;
    --slide-height: 720px;
    --grid-size: 40px;
    
    /* Border Radius */
    --radius-sm: 2px;
    --radius-md: 4px;
    --radius-lg: 8px;
    --radius-full: 50%;
    
    /* Schatten */
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.1);
    
    /* Übergänge */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* -------------------------
   RESET & BASIS
   ------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--color-primary);
    color: var(--color-text);
    line-height: 1.5;
    min-height: 100vh;
}

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

/* -------------------------
   LOGIN OVERLAY
   ------------------------- */
.login-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.login-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.login-box {
    background: var(--color-white);
    padding: 40px 50px;
    border-radius: var(--radius-md);
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.login-box h1 {
    color: var(--color-primary);
    font-size: var(--font-size-2xl);
    margin-bottom: 8px;
}

.login-box p {
    color: var(--color-text);
    margin-bottom: 24px;
    font-size: var(--font-size-base);
}

.login-box input[type="password"] {
    width: 100%;
    padding: 14px 18px;
    font-size: var(--font-size-lg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    transition: border-color var(--transition-fast);
    font-family: var(--font-family);
}

.login-box input[type="password"]:focus {
    outline: none;
    border-color: var(--color-accent);
}

.login-box input[type="password"].error {
    border-color: var(--color-warning);
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-8px); }
    75% { transform: translateX(8px); }
}

.login-box button {
    width: 100%;
    padding: 14px;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: 700;
    cursor: pointer;
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.login-box button:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.login-box button:active {
    transform: translateY(0);
}

.login-error {
    color: var(--color-warning);
    font-size: var(--font-size-sm);
    margin-top: 12px;
    min-height: 20px;
}

/* -------------------------
   INDEX / KURSÜBERSICHT
   ------------------------- */
.index-container {
    display: none;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
}

.index-container.active {
    display: block;
}

.index-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: rgba(0,0,0,0.2);
}

.index-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-white);
}

.index-logo i {
    color: var(--color-accent-light);    /* Helle Variante auf dunklem HG */
    font-size: var(--font-size-2xl);
}

.header-actions {
    display: flex;
    gap: 10px;
}

.header-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--color-white);
    padding: 10px 15px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
}

.header-btn:hover {
    background: rgba(255,255,255,0.2);
}

/* Legacy - für Kompatibilität */
.logout-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: var(--color-white);
    padding: 10px 15px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
}

.logout-btn:hover {
    background: rgba(255,255,255,0.2);
}

.index-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 40px 30px 60px;
}

.index-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--color-white);
}

.index-subtitle {
    font-size: var(--font-size-lg);
    opacity: 0.8;
    margin-bottom: 40px;
}

/* Kurs-Grid */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

/* Kurs-Karte */
.course-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 25px;
    color: var(--color-text);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    overflow: hidden;          /* Verhindert Overflow von Inhalten */
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.course-card.course-card-coming-soon {
    opacity: 0.6;
    background: rgba(255,255,255,0.9);
}

.course-card.course-card-coming-soon:hover {
    transform: none;
    box-shadow: var(--shadow-lg);
}

.course-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.course-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-2xl);
}

.course-badge {
    background: var(--color-accent);
    color: var(--color-white);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.course-badge.coming-soon {
    background: var(--color-border);
    color: var(--color-text);
}

.course-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.course-desc {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: 20px;
}

.course-start-btn {
    width: 100%;
    padding: 14px 20px;
    background: var(--color-primary);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.course-start-btn:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

/* Kapitel-Liste */
.chapter-list {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.chapter-list-title {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    opacity: 0.7;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.chapter-items {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    max-width: 100%;
    overflow: hidden;
}

.chapter-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: var(--color-bg-light);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--color-text);
    min-width: 0;              /* Verhindert Grid-Overflow */
    overflow: hidden;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.chapter-item:hover {
    background: var(--color-accent);
    color: var(--color-white);
}

.chapter-num {
    font-weight: 800;
    color: var(--color-accent);
    min-width: 24px;
}

.chapter-item:hover .chapter-num {
    color: var(--color-white);
}

.chapter-name {
    overflow: hidden;
    text-overflow: ellipsis;
    /* Text darf umbrechen bei Bedarf */
    white-space: normal;
    line-height: 1.3;
}

/* Back to Index Button */
.back-to-index-btn {
    background: rgba(255,255,255,0.15);
    border: none;
    color: var(--color-white);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-size: var(--font-size-base);
}

.back-to-index-btn:hover {
    background: rgba(255,255,255,0.25);
}

/* Index Responsive */
@media (max-width: 768px) {
    .index-header {
        padding: 15px 20px;
    }
    
    .index-logo span {
        display: none;
    }
    
    .index-content {
        padding: 30px 20px 50px;
    }
    
    .index-title {
        font-size: var(--font-size-2xl);
    }
    
    .index-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: 30px;
    }
    
    .course-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .course-card {
        padding: 20px;
    }
    
    .course-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
    
    .chapter-items {
        grid-template-columns: 1fr;
    }
    
    .chapter-item {
        padding: 12px 15px;
    }
}

/* -------------------------
   SLIDE VIEWER CONTAINER
   ------------------------- */
.viewer-container {
    display: none;
    min-height: 100vh;
    flex-direction: column;
    background: var(--color-primary);
}

.viewer-container.active {
    display: flex;
}

/* Progress Bar */
.progress-bar {
    background: rgba(255,255,255,0.1);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.progress-text {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.progress-dots {
    display: flex;
    gap: 8px;
}

.progress-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    background: rgba(255,255,255,0.3);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.progress-dot.active {
    background: var(--color-accent);
    transform: scale(1.2);
}

.progress-dot:hover {
    background: rgba(255,255,255,0.6);
}

/* Slide Wrapper */
.slides-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: hidden;
    position: relative;
}

.slides-container {
    display: flex;
    transition: transform var(--transition-slow);
    will-change: transform;
    transform: translateX(0); /* Start bei Slide 1 */
    /* Nicht flex-centern - Position wird per JS berechnet */
    position: absolute;
    left: 50%;
}

/* -------------------------
   SLIDE STYLES
   ------------------------- */
.slide {
    flex-shrink: 0;
    width: var(--slide-max-width);
    min-height: var(--slide-height);
    background-color: var(--color-bg-light);
    background-image: 
        linear-gradient(var(--color-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
    position: relative;
    overflow: hidden;
    padding: var(--slide-padding);
    color: var(--color-text);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

/* Slide 1 - Dunkler Hintergrund (Hero) */
.slide.slide-dark {
    background-color: var(--color-primary);
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    color: var(--color-text-light);
}

/* -------------------------
   SLIDE HEADER
   ------------------------- */
.slide-header {
    margin-bottom: 40px;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.slide-header h2 {
    font-size: var(--font-size-lg);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
    margin-bottom: 10px;
}

.slide-header h1 {
    font-size: var(--font-size-4xl);
    color: var(--color-primary);
    font-weight: 800;
    line-height: 1;
}

.slide-dark .slide-header h1 {
    color: var(--color-white);
}

.slide-dark .slide-header h2 {
    color: var(--color-accent-light);    /* Helle Variante auf dunklem HG */
}

.slide-number {
    font-size: var(--font-size-5xl);
    font-weight: 900;
    color: var(--color-primary-10);
    line-height: 0.8;
}

.slide-dark .slide-number {
    color: rgba(255,255,255,0.1);
}

/* -------------------------
   SLIDE 1 - HERO SPEZIFISCH
   ------------------------- */
.circle-bg {
    position: absolute;
    top: -100px;
    right: -100px;
    width: 800px;
    height: 800px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, var(--color-accent-30) 0%, rgba(0, 51, 102, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.hero-content-wrapper {
    display: flex;
    width: 100%;
    height: 100%;
    z-index: 2;
    align-items: center;
    position: relative;
}

.hero-text-section {
    flex: 1;
    padding-right: 40px;
}

.hero-image-section {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 40px;
    border-radius: var(--radius-md);
    position: relative;
}

.glass-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 20px;
    height: 20px;
    border-top: 2px solid var(--color-accent);
    border-left: 2px solid var(--color-accent);
}

.glass-card::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--color-accent);
    border-right: 2px solid var(--color-accent);
}

.glass-card h1 {
    font-size: var(--font-size-hero);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1px;
    color: var(--color-white);
}

.glass-card h2 {
    font-size: var(--font-size-3xl);
    font-weight: 400;
    color: var(--color-accent-light);    /* Helle Variante auf dunklem HG */
    margin-bottom: 40px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.glass-card p {
    font-size: var(--font-size-xl);
    line-height: 1.6;
    color: var(--color-text-light);
    opacity: 0.9;
    max-width: 500px;
}

.badge {
    display: inline-flex;
    align-items: center;
    background: var(--color-accent);
    color: var(--color-white);
    padding: 8px 16px;
    font-weight: 700;
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 30px;
    border-radius: var(--radius-sm);
}

.badge i {
    margin-right: 8px;
}

.hero-image {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.4));
    transform: rotate(-5deg);
}

.molecule-icon {
    position: absolute;
    color: rgba(0, 180, 216, 0.1);
    font-size: 120px;
    bottom: 20px;
    right: 20px;
    z-index: 0;
}

/* -------------------------
   CONTENT GRIDS
   ------------------------- */
.content-grid {
    display: grid;
    gap: 40px;
    height: auto;
}

.content-grid-2col {
    grid-template-columns: 1fr 1fr;
}

.content-grid-2col-wide-left {
    grid-template-columns: 1.2fr 0.8fr;
}

.content-grid-2col-wide-right {
    grid-template-columns: 400px 1fr;
}

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

.content-grid-2x2 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 25px;
}

/* -------------------------
   GEMEINSAME KOMPONENTEN
   ------------------------- */

/* Bullet Listen */
.bullet-list {
    list-style: none;
}

.bullet-list li {
    margin-bottom: 18px;
    font-size: var(--font-size-xl);
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
}

.bullet-list li i {
    color: var(--color-accent);
    margin-right: 15px;
    margin-top: 6px;
    font-size: var(--font-size-lg);
    width: 25px;
    text-align: center;
    flex-shrink: 0;
}

/* Text-Wrapper für korrektes Layout */
.bullet-list li span {
    flex: 1;
    min-width: 0;
}

/* Strong-Elemente inline halten */
.bullet-list li strong {
    font-weight: 700;
}

/* Info Boxen */
.insight-box,
.pro-tip {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 20px;
    border-left: 5px solid var(--color-accent);
}

.insight-box h3,
.pro-tip h4 {
    font-size: var(--font-size-xl);
    margin-bottom: 8px;
    color: var(--color-accent-light);    /* Helle Variante auf dunklem HG */
    text-transform: uppercase;
}

.insight-box p,
.pro-tip p {
    font-size: var(--font-size-lg);
    line-height: 1.5;
    color: var(--color-text-light);
}

/* Warnungs-Boxen */
.warning-box {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 20px 30px;
    display: flex;
    align-items: center;
    border-left: 5px solid var(--color-warning);
}

.warning-box.light {
    background: var(--color-warning-10);
    border: 1px dashed var(--color-warning);
    color: var(--color-warning-dark);
}

.warning-icon {
    font-size: 32px;
    color: var(--color-warning);
    margin-right: 20px;
    flex-shrink: 0;
}

.warning-content h3 {
    font-size: var(--font-size-lg);
    text-transform: uppercase;
    color: var(--color-warning);
    margin-bottom: 5px;
}

.warning-content p {
    font-size: var(--font-size-lg);
    line-height: 1.4;
}

/* Bild-Container */
.image-container {
    border: 1px solid var(--color-primary);
    padding: 10px;
    background: var(--color-white);
    position: relative;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-caption {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 51, 102, 0.9);
    color: var(--color-white);
    padding: 5px 10px;
    font-size: 12px;
    text-transform: uppercase;
}

/* Schritt-Karten */
.step-card {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--color-border);
    padding: 24px 16px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--color-primary);
}

.step-number {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    color: var(--color-border);
    position: absolute;
    top: 20px;
    right: 20px;
    line-height: 1;
}

.step-icon {
    font-size: 36px;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.step-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.step-desc {
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
}

/* Info-Karten (Grid) */
.info-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    padding: 25px;
    display: flex;
    align-items: flex-start;
    box-shadow: var(--shadow-sm);
}

.card-icon {
    background: var(--color-bg-light);
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 20px;
    flex-shrink: 0;
    color: var(--color-accent);
    font-size: var(--font-size-2xl);
}

.card-content h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: 8px;
    font-weight: 700;
}

.card-content p {
    font-size: var(--font-size-base);
    line-height: 1.4;
    color: var(--color-text);
}

/* Regel-Items */
.rule-item {
    display: flex;
    align-items: flex-start;
    background: var(--color-white);
    padding: 20px;
    border-left: 4px solid var(--color-accent);
    box-shadow: var(--shadow-md);
}

.rule-item.danger {
    border-left-color: var(--color-warning);
}

.rule-icon {
    font-size: 32px;
    color: var(--color-accent);
    margin-right: 25px;
    width: 40px;
    text-align: center;
    margin-top: 5px;
    flex-shrink: 0;
}

.rule-item.danger .rule-icon {
    color: var(--color-warning);
}

.rule-content h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary);
    margin-bottom: 8px;
    font-weight: 700;
}

.rule-content p {
    font-size: var(--font-size-lg);
    line-height: 1.4;
    color: var(--color-text);
}

/* Highlight Text */
.highlight {
    font-weight: 700;
    color: var(--color-primary);
}

/* -------------------------
   NAVIGATION
   ------------------------- */
.nav-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 30px;
    padding: 20px;
    background: rgba(255,255,255,0.05);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: var(--color-accent);
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.nav-btn:hover:not(:disabled) {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.nav-btn i {
    font-size: 14px;
}

/* -------------------------
   RESPONSIVE DESIGN
   ------------------------- */

/* Tablet */
@media (max-width: 1300px) {
    .slide {
        width: calc(100vw - 40px);
        max-width: var(--slide-max-width);
        min-height: auto;
    }
    
    .slides-wrapper {
        padding: 10px;
    }
}

/* Tablet Portrait */
@media (max-width: 1024px) {
    :root {
        --font-size-4xl: 32px;
        --font-size-hero: 40px;
    }
    
    .slide {
        width: calc(100vw - 20px);
        padding: 30px;
    }
    
    .content-grid-2col,
    .content-grid-2col-wide-left,
    .content-grid-2col-wide-right {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .content-grid-4col {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content-wrapper {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-text-section {
        padding-right: 0;
        margin-bottom: 20px;
    }
    
    .hero-image {
        max-height: 250px;
        transform: rotate(0deg);
    }
    
    .glass-card {
        padding: 25px;
    }
    
    .glass-card h1 {
        font-size: var(--font-size-4xl);
    }
    
    .glass-card h2 {
        font-size: var(--font-size-xl);
        margin-bottom: 20px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        /* Font-Größen bleiben groß für gute Lesbarkeit */
        --font-size-base: 16px;
        --font-size-sm: 14px;
        --font-size-lg: 18px;
        --font-size-xl: 20px;
        --font-size-2xl: 24px;
        --font-size-3xl: 28px;
        --font-size-4xl: 32px;
        --font-size-5xl: 40px;
        --font-size-hero: 36px;
        --slide-padding-mobile: 25px 20px;
    }
    
    /* Slide auf volle Breite, scrollbar */
    .slide {
        width: calc(100vw - 16px);
        padding: var(--slide-padding-mobile);
        min-height: auto;
        border-radius: var(--radius-md);
        overflow-y: auto;
        max-height: calc(100vh - 120px); /* Platz für Nav oben/unten */
    }
    
    .slide-header {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 25px;
        padding-bottom: 15px;
    }
    
    .slide-header h1 {
        font-size: var(--font-size-2xl);
        line-height: 1.2;
    }
    
    .slide-header h2 {
        font-size: var(--font-size-sm);
        margin-bottom: 5px;
    }
    
    .slide-number {
        font-size: var(--font-size-3xl);
        position: absolute;
        top: 20px;
        right: 20px;
    }
    
    /* Alle Grids einspaltig */
    .content-grid-4col,
    .content-grid-2x2,
    .content-grid-2col,
    .content-grid-2col-wide-left,
    .content-grid-2col-wide-right {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .progress-bar {
        flex-wrap: wrap;
        gap: 10px;
        padding: 12px;
    }
    
    .progress-text {
        font-size: var(--font-size-sm);
    }
    
    .progress-dots {
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
    }
    
    .progress-dot {
        width: 10px;
        height: 10px;
    }
    
    .nav-controls {
        flex-direction: row;
        gap: 15px;
        padding: 12px 20px;
    }
    
    .nav-btn {
        flex: 1;
        justify-content: center;
        padding: 14px 20px;
        font-size: var(--font-size-base);
    }
    
    .nav-btn span {
        display: inline; /* Text bleibt sichtbar */
    }
    
    .nav-btn i {
        font-size: 16px;
    }
    
    /* Bullet Listen - gut lesbar */
    .bullet-list li {
        font-size: var(--font-size-lg);
        margin-bottom: 16px;
    }
    
    .bullet-list li i {
        font-size: var(--font-size-base);
        margin-right: 12px;
        width: 24px;
    }
    
    /* Hero Slide */
    .glass-card {
        padding: 25px;
    }
    
    .glass-card h1 {
        font-size: var(--font-size-hero);
        margin-bottom: 15px;
    }
    
    .glass-card h2 {
        font-size: var(--font-size-lg);
        margin-bottom: 20px;
        letter-spacing: 1px;
    }
    
    .glass-card p {
        font-size: var(--font-size-base);
        line-height: 1.6;
    }
    
    .badge {
        padding: 8px 14px;
        font-size: var(--font-size-sm);
        margin-bottom: 20px;
    }
    
    .hero-image {
        max-height: 250px;
        transform: rotate(0deg);
    }
    
    .circle-bg {
        width: 350px;
        height: 350px;
        top: -50px;
        right: -50px;
    }
    
    .molecule-icon {
        font-size: 80px;
        bottom: 15px;
        right: 15px;
    }
    
    /* Step Cards - große, lesbare Karten */
    .step-card {
        padding: 20px;
        min-height: auto;
    }
    
    .step-number {
        font-size: var(--font-size-2xl);
        top: 15px;
        right: 15px;
    }
    
    .step-icon {
        font-size: 32px;
        margin-bottom: 12px;
    }
    
    .step-title {
        font-size: var(--font-size-xl);
        margin-bottom: 10px;
    }
    
    .step-desc {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    /* Info Cards */
    .info-card {
        padding: 20px;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
        margin-right: 15px;
    }
    
    .card-content h3 {
        font-size: var(--font-size-lg);
    }
    
    .card-content p {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    /* Rule Items */
    .rule-item {
        padding: 18px;
    }
    
    .rule-icon {
        font-size: 28px;
        margin-right: 15px;
        width: 35px;
    }
    
    .rule-content h3 {
        font-size: var(--font-size-lg);
    }
    
    .rule-content p {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    /* Warning Box */
    .warning-box {
        padding: 18px 20px;
    }
    
    .warning-icon {
        font-size: 28px;
        margin-right: 15px;
    }
    
    .warning-content h3 {
        font-size: var(--font-size-base);
    }
    
    .warning-content p {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    /* Pro Tip */
    .insight-box,
    .pro-tip {
        padding: 18px 20px;
    }
    
    .insight-box h3,
    .pro-tip h4 {
        font-size: var(--font-size-base);
    }
    
    .insight-box p,
    .pro-tip p {
        font-size: var(--font-size-base);
        line-height: 1.5;
    }
    
    /* Image Container */
    .image-container {
        padding: 8px;
        min-height: 200px;
    }
    
    .image-caption {
        font-size: 12px;
        padding: 5px 10px;
    }
}

/* Touch Feedback für Mobile */
@media (hover: none) {
    .nav-btn:active {
        transform: scale(0.95);
    }
    
    .progress-dot:active {
        transform: scale(1.3);
    }
}

/* -------------------------
   ZUSÄTZLICHE MOBILE ANPASSUNGEN
   ------------------------- */

/* Tablet - Inline-Style Overrides */
@media (max-width: 1024px) {
    /* Slide-spezifische Inline-Styles überschreiben */
    .slide [style*="height: 380px"],
    .slide [style*="height: 390px"],
    .slide [style*="height: 450px"],
    .slide [style*="height: 458px"] {
        height: auto !important;
    }
    
    /* Flex-Container für vertikales Layout */
    .slide [style*="display: flex"][style*="gap: 60px"] {
        gap: 30px !important;
    }
    
    /* Image Container anpassen */
    .image-container[style*="height: 100%"] {
        height: 300px !important;
    }
    
    /* Step Cards */
    .step-card[style*="height: 280px"] {
        height: auto !important;
        min-height: 200px;
    }
    
    /* Info Card Icons kleiner */
    .card-icon {
        width: 50px;
        height: 50px;
        font-size: var(--font-size-xl);
    }
    
    /* Rule Items kompakter */
    .rule-item {
        padding: 15px;
    }
    
    .rule-icon {
        font-size: 24px;
        margin-right: 15px;
    }
}

/* Mobile - Inline-Style Overrides (Fonts bleiben groß!) */
@media (max-width: 768px) {
    /* Alle fixen Höhen auf auto - Scroll erlaubt */
    .slide [style*="height:"] {
        height: auto !important;
        min-height: unset !important;
    }
    
    /* Gap anpassen */
    .slide [style*="gap: 60px"],
    .slide [style*="gap: 40px"] {
        gap: 25px !important;
    }
    
    .slide [style*="gap: 30px"],
    .slide [style*="gap: 25px"],
    .slide [style*="gap: 20px"] {
        gap: 20px !important;
    }
    
    /* Padding-left bei Text entfernen */
    .slide [style*="padding-left: 45px"] {
        padding-left: 0 !important;
    }
    
    /* Flex-Container zu Column auf Mobile */
    .slide > [style*="display: flex"][style*="gap"]:not(.badge):not(.nav-btn):not(.progress-dots) {
        flex-direction: column !important;
        align-items: stretch !important;
    }
    
    /* Nested Flex-Container beibehalten */
    .slide [style*="display: flex"][style*="align-items: center"]:not([style*="gap: 60px"]):not([style*="gap: 40px"]) {
        flex-direction: row !important;
    }
    
    /* Image Container - größer für bessere Sichtbarkeit */
    .image-container,
    .image-container[style*="height"] {
        height: 200px !important;
        min-height: 200px !important;
    }
    
    /* Product Images */
    .slide img[style*="height: 160px"],
    .slide img[style*="height: 180px"],
    .slide img[style*="height: 200px"] {
        height: 120px !important;
    }
    
    /* Icon-Container behalten ihre Größe */
    .slide [style*="width: 60px"][style*="height: 60px"] {
        width: 50px !important;
        height: 50px !important;
    }
    
    .slide [style*="width: 40px"][style*="height: 40px"] {
        width: 40px !important;
        height: 40px !important;
    }
    
    /* Cards und Boxes - horizontal beibehalten */
    .info-card,
    .rule-item {
        flex-direction: row !important;
        align-items: flex-start !important;
    }
    
    .card-icon,
    .rule-icon {
        margin-bottom: 0 !important;
        margin-right: 15px !important;
        flex-shrink: 0;
    }
    
    /* Warning Box */
    .warning-box {
        flex-direction: row !important;
        flex-wrap: wrap;
    }
    
    /* Absolute positioned elements (z.B. Temp-Badge) */
    .slide [style*="position: absolute"][style*="right: 20px"][style*="top: 20px"] {
        position: static !important;
        margin-bottom: 15px !important;
        display: inline-block;
    }
    
    /* Border radius badges */
    .slide [style*="border-radius: 20px"] {
        font-size: var(--font-size-sm) !important;
        padding: 6px 12px !important;
    }
    
    .slide-header h1 br {
        display: none;
    }
    
    /* Hero Slide */
    .glass-card h1 br {
        display: none;
    }
    
    .glass-card h2 {
        margin-bottom: 20px;
        font-size: var(--font-size-xl);
    }
    
    /* Step Cards */
    .step-card {
        padding: 20px 15px;
    }
    
    .step-number {
        font-size: var(--font-size-2xl);
        top: 10px;
        right: 10px;
    }
    
    .step-icon {
        font-size: 28px;
    }
    
    .step-title {
        font-size: var(--font-size-lg);
    }
    
    /* Badges and Tags */
    .slide [style*="border-radius: 20px"] {
        position: static !important;
        margin-bottom: 10px;
    }
    
    /* Action Steps (Slide 8) */
    .slide [style*="display: flex"][style*="gap: 20px"]:has([style*="border-top: 3px"]) {
        flex-direction: column;
    }
}

/* Sehr kleine Screens (iPhone SE etc.) - Fonts bleiben lesbar! */
@media (max-width: 480px) {
    :root {
        /* Fonts bleiben groß und lesbar */
        --font-size-sm: 13px;
        --font-size-base: 15px;
        --font-size-lg: 17px;
        --font-size-xl: 19px;
        --font-size-2xl: 22px;
        --font-size-3xl: 26px;
        --font-size-4xl: 30px;
        --font-size-hero: 32px;
        --slide-padding-mobile: 20px 15px;
    }
    
    .slide {
        padding: var(--slide-padding-mobile);
        width: calc(100vw - 10px);
    }
    
    .slide-header {
        margin-bottom: 20px;
        padding-bottom: 12px;
    }
    
    .slide-header h1 {
        font-size: var(--font-size-xl);
    }
    
    .slide-header h2 {
        font-size: var(--font-size-sm);
    }
    
    .slide-number {
        font-size: var(--font-size-2xl);
    }
    
    .login-box {
        padding: 30px 25px;
    }
    
    .login-box h1 {
        font-size: var(--font-size-xl);
    }
    
    .login-box p {
        font-size: var(--font-size-base);
    }
    
    .login-box input[type="password"] {
        padding: 12px 14px;
        font-size: var(--font-size-base);
    }
    
    .login-box button {
        padding: 12px;
        font-size: var(--font-size-base);
    }
    
    .progress-bar {
        padding: 10px;
    }
    
    .progress-text {
        font-size: var(--font-size-sm);
    }
    
    .progress-dot {
        width: 8px;
        height: 8px;
    }
    
    .nav-controls {
        padding: 10px 15px;
    }
    
    .nav-btn {
        padding: 12px 15px;
    }
    
    .nav-btn span {
        display: none; /* Nur Icons auf sehr kleinen Screens */
    }
    
    .nav-btn i {
        font-size: 20px;
    }
    
    /* Hero Slide */
    .glass-card {
        padding: 20px;
    }
    
    .glass-card h1 {
        font-size: var(--font-size-3xl);
    }
    
    .glass-card h2 {
        font-size: var(--font-size-base);
        margin-bottom: 15px;
    }
    
    .glass-card p {
        font-size: var(--font-size-base);
    }
    
    .badge {
        padding: 6px 12px;
        font-size: var(--font-size-sm);
        margin-bottom: 15px;
    }
    
    .hero-image {
        max-height: 180px;
    }
    
    .circle-bg {
        width: 250px;
        height: 250px;
    }
    
    .molecule-icon {
        font-size: 60px;
    }
    
    /* Content */
    .bullet-list li {
        margin-bottom: 14px;
        font-size: var(--font-size-base);
    }
    
    .bullet-list li i {
        font-size: var(--font-size-sm);
        margin-right: 10px;
        width: 22px;
    }
    
    /* Step Cards */
    .step-card {
        padding: 18px 15px;
    }
    
    .step-icon {
        font-size: 28px;
        margin-bottom: 10px;
    }
    
    .step-title {
        font-size: var(--font-size-lg);
        margin-bottom: 8px;
    }
    
    .step-desc {
        font-size: var(--font-size-base);
    }
    
    .step-number {
        font-size: var(--font-size-xl);
    }
    
    /* Cards */
    .info-card,
    .rule-item {
        padding: 15px;
    }
    
    .card-icon,
    .rule-icon {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .card-content h3,
    .rule-content h3 {
        font-size: var(--font-size-base);
    }
    
    .card-content p,
    .rule-content p {
        font-size: var(--font-size-base);
    }
    
    /* Boxes */
    .insight-box,
    .pro-tip,
    .warning-box {
        padding: 15px;
    }
    
    .insight-box h3,
    .pro-tip h4,
    .warning-content h3 {
        font-size: var(--font-size-base);
    }
    
    .insight-box p,
    .pro-tip p,
    .warning-content p {
        font-size: var(--font-size-base);
    }
    
    .warning-icon {
        font-size: 24px;
    }
    
    /* Images */
    .image-container {
        height: 180px;
        min-height: 180px;
    }
}

/* Landscape Mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .slide {
        min-height: auto;
        padding: 20px 40px;
    }
    
    .slide-header {
        margin-bottom: 20px;
        padding-bottom: 10px;
    }
    
    .slides-wrapper {
        padding: 10px;
    }
    
    .progress-bar,
    .nav-controls {
        padding: 10px;
    }
}

/* Print Styles (optional) */
@media print {
    /* Verstecke UI-Elemente */
    .login-overlay,
    .index-container,
    .progress-bar,
    .nav-controls,
    .header-actions,
    .back-to-index-btn {
        display: none !important;
    }
    
    /* Viewer sichtbar machen */
    .viewer-container {
        display: block !important;
        min-height: auto !important;
    }
    
    /* Slides-Wrapper für Print anpassen */
    .slides-wrapper {
        padding: 0 !important;
        overflow: visible !important;
        height: auto !important;
    }
    
    .slides-container {
        display: block !important;
        position: static !important;
        transform: none !important;
        left: auto !important;
    }
    
    /* Alle Slides anzeigen */
    .slide {
        display: block !important;
        width: 100% !important;
        max-width: 100% !important;
        height: auto !important;
        min-height: auto !important;
        max-height: none !important;
        margin: 0 0 20px 0 !important;
        padding: 30px !important;
        page-break-after: always;
        page-break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc;
        background: white !important;
        overflow: visible !important;
    }
    
    /* Letzte Slide ohne Seitenumbruch */
    .slide:last-child {
        page-break-after: avoid;
    }
    
    /* Dark Slides für Print anpassen */
    .slide-dark {
        background: var(--color-bg-light) !important;
        color: var(--color-text) !important;
    }
    
    .slide-dark .glass-card {
        background: white !important;
        border: 1px solid var(--color-border) !important;
    }
    
    .slide-dark .glass-card h1,
    .slide-dark .glass-card h2,
    .slide-dark .glass-card p {
        color: var(--color-text) !important;
    }
    
    .slide-dark .circle-bg,
    .slide-dark .molecule-icon {
        display: none !important;
    }
    
    /* Bilder für Print optimieren */
    img {
        max-width: 100% !important;
        height: auto !important;
    }
    
    /* Grids einspaltig für Print */
    .content-grid-2col,
    .content-grid-2x2,
    .content-grid-4col {
        display: block !important;
    }
    
    .content-grid-2col > *,
    .content-grid-2x2 > *,
    .content-grid-4col > * {
        margin-bottom: 20px !important;
    }
    
    /* Print Header */
    @page {
        margin: 2cm;
        size: A4;
    }
}

/* -------------------------
   UTILITY KLASSEN
   ------------------------- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mt-auto { margin-top: auto; }
.hidden { display: none !important; }
.visible { display: block !important; }