/* ========================================
   Trading Academy - Stylesheet
   ======================================== */

/* === Reset & Base Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Hero-Gradient Schema (V3.0) - MultiThread Webtools Design */
    --bg-primary: #0f172a;      /* Dunkel-Slate (Hero Start) */
    --bg-secondary: #1e293b;    /* Mittel-Slate (Hero 60%) */
    --bg-tertiary: #1a2332;     /* Zwischen-Slate */
    --bg-card: #1e293b;         /* Card Hintergrund (= bg-secondary) */
    --bg-card-hover: #243447;   /* Card Hover (aufgehelltes Slate) */

    /* Primärfarben (Primary Blue aus Hero-Gradient) */
    --primary: #2563eb;         /* Primary Blue (Hero Ende) */
    --primary-light: #3b82f6;   /* Helles Blau */
    --primary-dark: #1d4ed8;    /* Dunkles Blau */

    /* Akzentfarben */
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    --accent-cyan: #06b6d4;

    /* Text Farben - Optimiert für Slate-Hintergrund */
    --text-primary: #ffffff;    /* Reinweiß für beste Lesbarkeit */
    --text-secondary: #d1d5db;  /* Hellgrau */
    --text-muted: #6b7280;      /* Gedämpftes Grau */

    /* Border & Shadows - Slate-Schema */
    --border-color: #334155;        /* Slate Border */
    --border-subtle: #1e293b;       /* Subtile Border (= bg-secondary) */
    --border-dark: #475569;         /* Dunklere Border */
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.4);
    --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.5);
    --shadow-lg: 0 8px 24px rgba(15, 23, 42, 0.6);
    --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);  /* Primary Blue Glow */

    /* Gradients - Hero-Schema */
    --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e293b 60%, #2563eb 100%);
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-card: linear-gradient(135deg, #1e293b 0%, #243447 100%);
    --gradient-header: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --gradient-warning: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);

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

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* === Header / Hero Section === */
.header {
    background: var(--gradient-hero);  /* Hero-Gradient! */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    color: white;
    padding: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
}

/* Hero Content (Logo + Tagline LINKS, Nav RECHTS) */
.hero-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

/* Logo + Tagline Container (Links) */
.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--text-primary);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
}

.tagline {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    opacity: 0.9;
}

/* Navigation Buttons im Header (Rechts) */
.nav-buttons-header {
    display: flex;
    gap: var(--spacing-sm);
}

/* ===== FORTSCHRITTSANZEIGE (Neue Leiste mit grünen Streifen) ===== */

/* Container: volle Breite */
.learning-progress {
    width: 100%;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    max-width: 100%;
}

/* Kopfzeile: Titel links, Zähler rechts in einer Zeile */
.lp-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
    padding: 0 var(--spacing-lg);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.lp-head h3 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.lp-count {
    opacity: 0.9;
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    white-space: nowrap;
}

/* Hintergrund der Fortschrittsleiste (schlank, abgerundet) */
.lp-bar {
    position: relative;
    height: 16px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
    max-width: 1200px;
    margin: 0 auto;
    margin-left: var(--spacing-lg);
    margin-right: var(--spacing-lg);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Füllung mit grünen Streifen, wächst über die Breite */
.lp-fill {
    height: 100%;
    width: calc(var(--p, 0) * 100%);
    background: repeating-linear-gradient(
        45deg,
        #22c55e 0 10px,
        #16a34a 10px 20px
    );
    transition: width 400ms ease;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
}

/* Responsive Design für kleine Bildschirme */
@media (max-width: 768px) {
    .lp-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .lp-head h3 {
        font-size: 1.1rem;
    }

    .lp-count {
        font-size: 0.9rem;
        align-self: flex-end;
    }

    .lp-bar {
        margin-left: 1rem;
        margin-right: 1rem;
    }
}

/* === Page Navigation (3 Buttons) === */
.page-navigation {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-md);
}

.nav-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 2rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.nav-btn-icon {
    font-size: 1.3rem;
}

.nav-btn:not(.nav-btn-disabled):hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.nav-btn-active {
    background: var(--gradient-primary);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.nav-btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-card);
}

.badge-small {
    font-size: 0.7rem;
    background: var(--accent-orange);
    color: white;
    padding: 0.15rem 0.5rem;
    border-radius: 8px;
    font-weight: 700;
    margin-left: 0.25rem;
}

/* Responsive Navigation */
@media (max-width: 768px) {
    .nav-buttons {
        flex-direction: column;
        gap: 0.75rem;
    }

    .nav-btn {
        width: 100%;
        justify-content: center;
        padding: 0.6rem 1.5rem;
    }
}

/* === Main Content === */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

/* === Progress Section === */
.progress-section {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-subtle);
    transition: all var(--transition-normal);
}

.progress-section:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.progress-section h2 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.5rem;
}

.progress-bar {
    background: var(--bg-tertiary);
    height: 24px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    border: 1px solid var(--border-color);
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width var(--transition-slow);
    border-radius: 12px;
    box-shadow: var(--shadow-glow);
}

.progress-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* === Filter Section === */
.filter-section {
    margin-bottom: var(--spacing-xl);
}

.filter-section h2 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.5rem;
}

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

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
}

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

.filter-btn.active {
    background: var(--gradient-primary);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-glow);
}

.filter-btn.active::before {
    opacity: 1;
}

/* === Cards Section === */
.cards-section h2 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-size: 1.5rem;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

/* === Card Styles === */
.card {
    background: var(--gradient-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 2px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.card:hover::before {
    opacity: 1;
}

.card[data-completed="true"] {
    border-color: var(--accent-green);
}

.card[data-completed="true"]::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-green);
}

.card-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.card-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 2px 8px rgba(99, 102, 241, 0.3));
}

/* Sternchen: Oben links in der Karte positioniert */
.card-status {
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    padding: 4px 6px;
    border-radius: 6px;
    backdrop-filter: blur(4px);
}

.card-status:hover {
    transform: scale(1.2) rotate(15deg);
    background: rgba(0, 0, 0, 0.7);
}

.card-status[data-status="completed"] {
    filter: grayscale(0%) drop-shadow(0 0 8px rgba(16, 185, 129, 0.6));
    background: rgba(16, 185, 129, 0.2);
}

.card-status[data-status="uncompleted"] {
    filter: grayscale(100%);
    opacity: 0.4;
}

.card-status[data-status="uncompleted"]:hover {
    opacity: 0.8;
}

.card-title {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.card-category {
    background: var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    border: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-notes {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* === Footer === */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer p {
    font-size: 0.9rem;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .logo {
        font-size: 1.5rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

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

    .filter-buttons {
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-lg) 0;
    }

    .card {
        padding: var(--spacing-md);
    }
}

/* === Utility Classes === */
.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   NEUE NAVIGATION (V2.0)
   ======================================== */

/* === Header Top (Logo + Progress) === */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0;
}

.progress-compact {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.progress-bar-mini {
    width: 100px;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill-mini {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width var(--transition-slow);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* === Navigation Buttons im Header === */
.nav-buttons-header {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: calc(var(--spacing-sm) * 0.8);
    padding-bottom: 0;
}

/* === Kategorien Navigation Bar === */
.categories-navigation {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.categories-nav-bar {
    display: flex;
    align-items: stretch;
    gap: 0;
}

.categories-nav-bar .category-dropdown {
    flex: 1;
    position: relative;
}

.categories-nav-bar .category-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md) var(--spacing-sm);
    background: transparent;
    border: none;
    border-right: 1px solid var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.categories-nav-bar .category-dropdown:last-child .category-btn {
    border-right: none;
}

.categories-nav-bar .category-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.categories-nav-bar .category-dropdown.active .category-btn {
    background: var(--gradient-primary);
    color: white;
    box-shadow: inset 0 -3px 0 0 var(--primary);
}

.categories-nav-bar .category-icon {
    font-size: 1.2rem;
}

.categories-nav-bar .dropdown-arrow {
    font-size: 0.7rem;
    transition: transform var(--transition-fast);
}

.categories-nav-bar .category-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* Dropdown Content für Navigation */
.categories-nav-bar .category-dropdown-content {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.categories-nav-bar .category-dropdown.active .category-dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Responsive: Icons ausblenden bei Platzmangel */
@media (max-width: 1024px) {
    .categories-nav-bar .category-icon {
        display: none;
    }

    .categories-nav-bar .category-btn {
        font-size: 0.85rem;
        padding: var(--spacing-sm) var(--spacing-xs);
    }
}

/* === Suchfunktion === */
.search-section {
    margin-bottom: var(--spacing-xl);
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--bg-card);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-md);
    transition: all var(--transition-normal);
}

.search-box:focus-within {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.search-icon {
    font-size: 1.2rem;
    margin-right: var(--spacing-sm);
    color: var(--text-muted);
}

.search-input {
    flex: 1;
    padding: var(--spacing-md) 0;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-clear {
    background: var(--bg-tertiary);
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-clear:hover {
    background: var(--accent-red);
    color: white;
}

.search-results-info {
    margin-top: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--accent-green);
    font-size: 0.9rem;
}

/* === Kategorien Section === */
.categories-section {
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.categories-dropdown-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

/* === Category Dropdown === */
.category-dropdown {
    position: relative;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: var(--bg-card);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

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

.category-dropdown.active .category-btn {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
}

.category-icon {
    font-size: 1.2rem;
}

.dropdown-arrow {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-fast);
}

.category-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

/* === Dropdown Content === */
.category-dropdown-content {
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    left: 0;
    min-width: 200px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-xs);
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
}

.category-dropdown.active .category-dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.subcategory-btn {
    display: block;
    width: 100%;
    padding: 0.75rem var(--spacing-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.subcategory-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.subcategory-btn.active {
    background: var(--gradient-primary);
    color: white;
    font-weight: 600;
}

/* === Schnellfilter === */
.quickfilter-section {
    margin-bottom: var(--spacing-xl);
}

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

.quickfilter-btn {
    padding: 0.6rem 1.2rem;
    background: var(--bg-card);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.quickfilter-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
    transform: translateY(-2px);
}

.quickfilter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
}

/* === Cards Header (mit Sortierung) === */
.cards-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.cards-header .section-title {
    margin-bottom: 0;
}

#cardsCount {
    color: var(--text-muted);
    font-size: 1.1rem;
    font-weight: 500;
}

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

.cards-sort label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

#sortSelect {
    padding: 0.5rem 1rem;
    background: var(--bg-card);
    border: 2px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-normal);
}

#sortSelect:hover {
    border-color: var(--primary);
}

#sortSelect:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);  /* Primary Blue */
}

/* === Card Badges === */
.card-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 0.4rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

.card-badge.beginner {
    background: var(--accent-green);
    color: white;
}

.card-badge.new {
    background: var(--accent-orange);
    color: white;
    top: calc(var(--spacing-sm) + 32px);
}

.card.card-new {
    border-color: var(--accent-orange);
}

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

@media (max-width: 968px) {
    .categories-dropdown-container {
        flex-direction: column;
    }

    .category-btn {
        width: 100%;
        justify-content: space-between;
    }

    .category-dropdown-content {
        position: static;
        margin-top: var(--spacing-sm);
        transform: none;
    }

    .category-dropdown.active .category-dropdown-content {
        transform: none;
    }
}

@media (max-width: 768px) {
    .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .progress-compact {
        width: 100%;
        justify-content: space-between;
    }

    .progress-bar-mini {
        flex: 1;
        max-width: 200px;
    }

    .quickfilter-buttons {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--spacing-sm);
    }

    .quickfilter-btn {
        flex-shrink: 0;
    }

    .cards-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .cards-sort {
        width: 100%;
        justify-content: space-between;
    }

    #sortSelect {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .search-input {
        font-size: 0.9rem;
    }

    .category-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .quickfilter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

/* ========================================
   ZURÜCK NACH OBEN BUTTON
   ======================================== */

.back-to-top-container {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
    margin-bottom: 2rem;
}

.back-to-top-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    border: 2px solid var(--primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.back-to-top-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.4);
    border-color: var(--accent-cyan);
}

.back-to-top-btn:active {
    transform: translateY(-2px);
}

.back-to-top-btn .btn-icon {
    font-size: 1.5rem;
    font-weight: bold;
    animation: bounce 2s infinite;
}

/* Bounce-Animation für Pfeil */
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-8px);
    }
    60% {
        transform: translateY(-4px);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .back-to-top-container {
        margin-top: 3rem;
    }

    .back-to-top-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .back-to-top-btn {
        width: 100%;
        justify-content: center;
    }
}