/* CSS Reset und Grundeinstellungen */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --bg-tertiary: #333333;
    --text-primary: #ffffff;
    --text-secondary: #cccccc;
    --accent-color: #4a9eff;
    --accent-hover: #6bb0ff;
    --border-color: #444444;
    --shadow: rgba(0, 0, 0, 0.5);
    --transition-speed: 0.3s;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.reverse {
    unicode-bidi: bidi-override;
    direction: rtl;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.loading-overlay p {
    margin-top: 20px;
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.loader {
    border: 5px solid var(--bg-tertiary);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

header h1 {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 2px;
    color: var(--text-primary);
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Dropdown Menu */
.dropdown {
    position: relative;
}

.dropdown-btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.dropdown-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.dropdown-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-secondary);
    min-width: 200px;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-top: 0;
    max-height: 400px;
    overflow-y: auto;
    z-index: 1001;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    display: block;
    padding: 0.8rem 1.2rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: background var(--transition-speed);
}

.dropdown-content a:hover {
    background: var(--bg-tertiary);
}

/* Hamburger Menu */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background: var(--text-primary);
    transition: all var(--transition-speed);
    border-radius: 2px;
}

.hamburger:hover span {
    background: var(--accent-color);
}

.hamburger-menu {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    box-shadow: -2px 0 10px var(--shadow);
    transition: right var(--transition-speed);
    z-index: 2000;
    padding-top: 60px;
}

.hamburger-menu.active {
    right: 0;
}

.hamburger-menu ul {
    list-style: none;
}

.hamburger-menu li {
    border-bottom: 1px solid var(--border-color);
}

.hamburger-menu a {
    display: block;
    padding: 1rem 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    transition: all var(--transition-speed);
}

.hamburger-menu a:hover {
    background: var(--bg-tertiary);
    padding-left: 2rem;
}

/* Settings Button */
.settings-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: transparent;
    border: 1px solid var(--border-color);

    /* Flexbox für perfekte Zentrierung */
    display: flex;
    align-items: center;
    justify-content: center;

    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);

    /* Explizit das Rotationszentrum setzen */
    transform-origin: center center;
}

.settings-btn:hover {
/*  background: var(--bg-tertiary);
    border-color: var(--accent-color);*/
    transform: rotate(90deg) ;
}

/* Current Selection */
.current-selection {
    text-align: center;
    padding: 0.8rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.selection-category {
    color: var(--accent-color);
    font-weight: 600;
}

.selection-separator {
    margin: 0 1rem;
    color: var(--text-secondary);
}

.selection-region {
    color: var(--text-secondary);
}

/* Main Content */
main {
    margin-top: 140px;
    margin-bottom: 80px;
    padding: 2rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

/* Lightbox Container */
.lightbox-container {
    position: relative;
    width: 100%;
    height: 600px;
    background: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px var(--shadow);
}

.lightbox-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: opacity 0.3s ease;
}

/* Navigation Buttons */
.nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.6);
    color: var(--text-primary);
    border: none;
    font-size: 3rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: all var(--transition-speed);
    z-index: 10;
    border-radius: 4px;
}

.nav-btn:hover {
    background: rgba(0, 0, 0, 0.9);
    color: var(--accent-color);
}

.prev-btn {
    left: 20px;
}

.next-btn {
    right: 20px;
}

/* Slide Animations */
@keyframes slideOutLeft {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(-100%);
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
    }
    to {
        transform: translateX(100%);
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%);
    }
    to {
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

.slide-out-left {
    animation: slideOutLeft 0.5s ease forwards;
}

.slide-out-right {
    animation: slideOutRight 0.5s ease forwards;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease forwards;
}

.slide-in-right {
    animation: slideInRight 0.5s ease forwards;
}

/* Thumbnails Container */
.thumbnails-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

/* Custom Scrollbar */
.thumbnails-container::-webkit-scrollbar {
    width: 10px;
}

.thumbnails-container::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 5px;
}

.thumbnails-container::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 5px;
}

.thumbnails-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* Thumbnails */
.thumbnail {
    position: relative;
    cursor: pointer;
    border-radius: 4px;
    overflow: hidden;
    aspect-ratio: 4/3;
    background: var(--bg-tertiary);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.thumbnail:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px var(--shadow);
}

.thumbnail.active {
    border: 3px solid var(--accent-color);
    box-shadow: 0 0 15px var(--accent-color);
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
    font-size: 1.2rem;
}

/* Footer */
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-top: 2px solid var(--border-color);
    z-index: 1000;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.impressum-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-speed);
}

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

/* Settings Panel */
.settings-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: var(--bg-secondary);
    box-shadow: -2px 0 20px var(--shadow);
    transition: right var(--transition-speed);
    z-index: 3000;
    overflow-y: auto;
}

.settings-panel.active {
    right: 0;
}

.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

.settings-header h3 {
    font-size: 1.5rem;
    font-weight: 300;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 2rem;
    cursor: pointer;
    transition: color var(--transition-speed);
    padding: 0;
    width: 40px;
    height: 40px;
    line-height: 1;
}

.close-btn:hover {
    color: var(--accent-color);
}

.settings-content {
    padding: 2rem;
}

.setting-group {
    margin-bottom: 2rem;
}

.setting-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.setting-group input[type="range"] {
    width: 100%;
    margin: 0.5rem 0;
}

.setting-group span {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-weight: 600;
    color: var(--accent-color);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 4000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    overflow: auto;
}

.modal-content {
    background-color: var(--bg-secondary);
    margin: 5% auto;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 800px;
    position: relative;
    box-shadow: 0 4px 30px var(--shadow);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.modal-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.modal-content h4 {
    margin-top: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.modal-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    color: var(--text-secondary);
    font-size: 2.5rem;
    font-weight: bold;
    cursor: pointer;
    transition: color var(--transition-speed);
}

.close:hover {
    color: var(--accent-color);
}

.impressum-content {
    max-height: 70vh;
    overflow-y: auto;
    padding-right: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.3rem;
    }

    main {
        margin-top: 160px;
        padding: 1rem;
    }

    .lightbox-container {
        height: 400px;
    }

    .nav-btn {
        font-size: 2rem;
        padding: 0.5rem 1rem;
    }

    .prev-btn {
        left: 10px;
    }

    .next-btn {
        right: 10px;
    }

    .thumbnails-container {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.5rem;
        max-height: 300px;
    }

    .settings-panel {
        width: 100%;
        right: -100%;
    }

    .hamburger-menu {
        width: 100%;
        right: -100%;
    }

    .footer-content {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.1rem;
        letter-spacing: 1px;
    }

    .lightbox-container {
        height: 300px;
    }

    .thumbnails-container {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .current-selection {
        font-size: 0.85rem;
    }
}