/* =====================================================
   ERNÄHRUNG AKTUELL - Basis CSS
   Version 1.0 - November 2025
   ===================================================== */

/* =====================================================
   CSS VARIABLEN FÜR THEMES
   ===================================================== */

:root {
    /* === LIGHT MODE (Standard) === */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-accent: #e9ecef;
    
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-muted: #95a5a6;
    
    --color-grundlagen: #667eea;
    --color-nahrungsmittel: #27ae60;
    --color-rezepte: #f39c12;
    --color-wissenswertes: #e74c3c;
    --color-info: #764ba2;
    
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 20px rgba(0,0,0,0.2);
    
    --border-radius: 8px;
    --transition-speed: 0.3s;
    
    /* === SCHRIFTEN === */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Georgia', serif;
    
    /* === ABSTÄNDE === */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

/* === DARK MODE === */
[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-accent: #3a3a3a;
    
    --text-primary: #e9ecef;
    --text-secondary: #adb5bd;
    --text-muted: #6c757d;
    
    --color-grundlagen: #8b9fe8;
    --color-nahrungsmittel: #52c87a;
    --color-rezepte: #f5b041;
    --color-wissenswertes: #ec7063;
    --color-info: #9370db;
    
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.5);
    --shadow-md: 0 4px 10px rgba(0,0,0,0.6);
    --shadow-lg: 0 8px 20px rgba(0,0,0,0.7);
}

/* =====================================================
   ANIMATIONEN AN/AUS
   ===================================================== */

/* Standard: Animationen AN */
* {
    transition: background-color var(--transition-speed), 
                color var(--transition-speed),
                transform var(--transition-speed);
}

/* Animationen AUS */
[data-animations="off"] * {
    transition: none !important;
    animation: none !important;
}

/* =====================================================
   CSS RESET & BASICS
   ===================================================== */

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* =====================================================
   HORIZONTALES SCROLLING (DESKTOP)
   ===================================================== */

@media (min-width: 769px) {
    .scroll-container {
        display: flex;
        overflow-x: auto;
        overflow-y: hidden;
        scroll-snap-type: x mandatory;
        scroll-behavior: smooth;
        height: 100vh;
    }
    
    .scroll-panel {
        min-width: 100vw;
        height: 100vh;
        scroll-snap-align: start;
        overflow-y: auto;
        padding: var(--spacing-xl) var(--spacing-lg);
    }
}

/* =====================================================
   VERTIKALES SCROLLING (MOBILE/TABLET)
   ===================================================== */

@media (max-width: 768px) {
    .scroll-container {
        display: block;
        overflow-y: auto;
    }
    
    .scroll-panel {
        min-height: 100vh;
        padding: var(--spacing-md) var(--spacing-sm);
    }
}

/* =====================================================
   NAVIGATION
   ===================================================== */

.nav-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Navigation versteckt */
.nav-container.hidden {
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
}

/* Kleiner Indikator-Button */
.nav-indicator {
    position: fixed;
    top: 10px;
    right: 20px;
    background: var(--color-grundlagen);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    z-index: 999;
    font-size: 1.5em;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.2s ease;
}

.nav-indicator.visible {
    opacity: 1;
    pointer-events: auto;
}

.nav-indicator:hover {
    transform: scale(1.1);
    background: var(--color-info);
}

.nav-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-grundlagen);
    text-decoration: none;
}

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

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
}

.nav-menu a:hover {
    background: var(--bg-accent);
}

.nav-menu a.active {
    background: var(--color-grundlagen);
    color: white;
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: var(--spacing-sm);
        box-shadow: var(--shadow-lg);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
}

/* =====================================================
   THEME CONTROLS
   ===================================================== */

.theme-controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.theme-switch {
    position: relative;
    width: 60px;
    height: 30px;
    background: var(--bg-accent);
    border-radius: 30px;
    cursor: pointer;
    border: 2px solid var(--text-muted);
}

.theme-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    background: var(--color-grundlagen);
    border-radius: 50%;
    transition: transform var(--transition-speed);
}

.theme-switch.active::after {
    transform: translateX(30px);
}

.animation-toggle {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-accent);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.animation-toggle:hover {
    background: var(--color-grundlagen);
    color: white;
}

/* =====================================================
   TEXTPLATZHALTER
   ===================================================== */

.text-short {
    /* Bis 30 Wörter - ca. 5-6 Zeilen */
    max-width: 600px;
}

.text-medium {
    /* Bis 150 Wörter - ca. 25-30 Zeilen */
    max-width: 800px;
}

.text-long {
    /* Bis 300 Wörter - ca. 50-60 Zeilen */
    max-width: 900px;
}

.text-with-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    align-items: start;
}

@media (max-width: 768px) {
    .text-with-image {
        grid-template-columns: 1fr;
    }
}

.placeholder-image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    background: var(--bg-accent);
    aspect-ratio: 16/9;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.2rem;
}

/* =====================================================
   CONTENT SECTIONS
   ===================================================== */

.content-section {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

/* Kategorie-spezifische Farben */
.category-grundlagen { border-left: 4px solid var(--color-grundlagen); }
.category-nahrungsmittel { border-left: 4px solid var(--color-nahrungsmittel); }
.category-rezepte { border-left: 4px solid var(--color-rezepte); }
.category-wissenswertes { border-left: 4px solid var(--color-wissenswertes); }
.category-info { border-left: 4px solid var(--color-info); }

/* =====================================================
   CARDS & BOXEN
   ===================================================== */

.card {
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-md);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

/* =====================================================
   BUTTONS
   ===================================================== */

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

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

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* =====================================================
   TABS & ACCORDIONS
   ===================================================== */

.tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--bg-accent);
    margin-bottom: var(--spacing-md);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    position: relative;
}

.tab.active {
    color: var(--color-grundlagen);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-grundlagen);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.accordion-item {
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--bg-accent);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.accordion-header {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-secondary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accordion-header:hover {
    background: var(--bg-accent);
}

.accordion-content {
    padding: var(--spacing-md);
    display: none;
}

.accordion-content.active {
    display: block;
}

/* =====================================================
   COOKIE CONSENT
   ===================================================== */

.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    display: none;
}

.cookie-consent.show {
    display: block;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

@media (max-width: 768px) {
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}

/* =====================================================
   UTILITY CLASSES
   ===================================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none; }

/* =====================================================
   DRUCKANSICHT
   ===================================================== */

@media print {
    .nav-container,
    .theme-controls,
    .cookie-consent,
    .no-print {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .scroll-container {
        display: block;
    }
    
    .scroll-panel {
        page-break-inside: avoid;
    }
}

/* =====================================================
   TROUBLESHOOTING HELP SYSTEM
   ===================================================== */

/* Help Button - oben links positioniert */
.help-button {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-info);
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 998;
    box-shadow: var(--shadow-md);
    transition: transform 0.2s, background 0.3s;
}

.help-button:hover {
    transform: scale(1.1);
    background: var(--color-grundlagen);
}

/* Troubleshooting Popup */
.help-popup {
    position: fixed;
    top: 70px;
    left: 20px;
    width: 350px;
    max-width: 90vw;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    z-index: 997;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    max-height: 70vh;
    overflow-y: auto;
}

.help-popup.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.help-popup h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.help-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 5px;
}

.help-close:hover {
    color: var(--text-primary);
}

.help-item {
    margin-bottom: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: 4px;
}

.help-item strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--color-grundlagen);
}

.help-item ul {
    margin: 0.5rem 0 0 1.5rem;
    font-size: 0.9rem;
}

.help-item p {
    margin: 0.5rem 0 0;
    font-size: 0.9rem;
}

/* Dark Mode Anpassungen */
[data-theme="dark"] .help-popup {
    background: var(--bg-secondary);
    border: 1px solid var(--bg-accent);
}

[data-theme="dark"] .help-item {
    background: var(--bg-primary);
}

/* Mobile: Help Button weiter unten damit es nicht mit Nav-Toggle kollidiert */
@media (max-width: 768px) {
    .help-button {
        top: 70px;
    }
    
    .help-popup {
        top: 120px;
        width: 280px;
    }
}

/* =====================================================
   DARK MODE KONTRAST-VERBESSERUNGEN
   ===================================================== */

/* Stelle sicher dass alle Texte auf farbigen Hintergründen gut lesbar sind */
[data-theme="dark"] .category-grundlagen {
    background: #2a3a5a;
}

[data-theme="dark"] .category-nahrungsmittel {
    background: #1e4620;
}

[data-theme="dark"] .category-rezepte {
    background: #4a3a1a;
}

[data-theme="dark"] .category-wissenswertes {
    background: #4a1a1a;
}

[data-theme="dark"] .category-info {
    background: #3a1a4a;
}

/* Cards im Dark Mode */
[data-theme="dark"] .card {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Buttons im Dark Mode */
[data-theme="dark"] .btn-primary {
    background: var(--color-grundlagen);
    color: white;
}

[data-theme="dark"] .btn-secondary {
    background: var(--bg-accent);
    color: var(--text-primary);
}