/* ===================================
   Virtual Art Gallery - Styles
   =================================== */

:root {
    --color-wall: #F5F5F5;
    --color-ceiling: #E8E8E8;
    --color-floor: #2A2A2A;
    --color-header: #1A1A1A;
    --color-accent: #C9A227;
    --color-text: #FFFFFF;
    --color-text-dark: #1A1A1A;

    --font-heading: Georgia, 'Times New Roman', serif;
    --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    --header-height: 60px;
    --footer-height: 40px;
}

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

html,
body {
    height: 100%;
    overflow: hidden;
    font-family: var(--font-body);
    background-color: var(--color-floor);
}

/* ===================================
   Header
   =================================== */

#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--color-header);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Navigation */
.nav-menu {
    position: relative;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: transform 0.3s;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-link {
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: color 0.3s;
}

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

.wireframe-btn {
    background: none;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--color-text);
    padding: 6px 12px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.wireframe-btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-header);
}

/* Artist Dropdown */
.artist-dropdown {
    position: relative;
}

.artist-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-header);
    list-style: none;
    min-width: 180px;
    padding: 10px 0;
    border-radius: 4px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.artist-dropdown:hover .artist-menu,
.artist-dropdown.active .artist-menu {
    opacity: 1;
    visibility: visible;
}

.artist-menu li {
    padding: 8px 20px;
}

.artist-menu a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 13px;
    display: block;
    transition: color 0.3s;
}

.artist-menu a:hover {
    color: var(--color-accent);
}

/* ===================================
   Main / Canvas
   =================================== */

#main {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: var(--footer-height);
    overflow: hidden;
}

#canvas-container {
    width: 100%;
    height: 100%;
}

#canvas-container canvas {
    display: block;
}

/* Loading Screen */
#loading-screen {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-header);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 500;
    transition: opacity 0.5s;
}

#loading-screen.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#loading-screen p {
    color: var(--color-text);
    margin-top: 20px;
    font-size: 14px;
    letter-spacing: 1px;
}

/* Info Overlay */
#info-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 400;
    transition: opacity 0.3s;
}

#info-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.info-content {
    background: var(--color-header);
    padding: 40px;
    border-radius: 8px;
    max-width: 500px;
    width: 90%;
    position: relative;
}

.close-info {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 28px;
    cursor: pointer;
    line-height: 1;
}

.info-content h2 {
    font-family: var(--font-heading);
    color: var(--color-accent);
    margin-bottom: 25px;
    font-size: 24px;
}

.controls-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.control-group h3 {
    color: var(--color-text);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 8px;
}

.control-group p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    margin-bottom: 10px;
    line-height: 1.5;
}

/* Image Overlay - nur Info-Layer, keine Verdunklung */
#image-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: 2000;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

#image-overlay.visible {
    opacity: 1;
    visibility: visible;
}

#image-overlay.hidden {
    display: none;
}

#image-overlay .close-overlay,
#image-overlay .image-info {
    pointer-events: auto;
}

.close-overlay {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: 2px solid var(--color-text);
    color: var(--color-text);
    width: 40px;
    height: 40px;
    font-size: 24px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s;
}

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

.image-info {
    text-align: center;
    color: var(--color-text);
    margin-top: 20px;
}

.image-info h3 {
    font-family: var(--font-heading);
    font-size: 24px;
    margin-bottom: 8px;
}

.image-info p {
    font-size: 14px;
    opacity: 0.8;
}

/* ===================================
   Footer
   =================================== */

#footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--footer-height);
    background: var(--color-header);
    z-index: 1000;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-content p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 12px;
}

.current-artist {
    color: var(--color-accent) !important;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 12px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--color-accent);
}

/* ===================================
   Responsive
   =================================== */

@media (max-width: 768px) {
    :root {
        --header-height: 50px;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-header);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .artist-menu {
        position: static;
        transform: none;
        background: transparent;
        box-shadow: none;
        padding-left: 15px;
    }

    .controls-info {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        justify-content: center;
        gap: 5px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 18px;
    }

    .info-content {
        padding: 25px;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.hidden {
    display: none !important;
}

.visible {
    display: flex !important;
}

/* ===================================
   Aufzug Buttons
   =================================== */

.elevator-btn {
    position: fixed;
    bottom: 60px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    color: rgba(255, 255, 255, 0.8);
    font-size: 20px;
    cursor: pointer;
    z-index: 100;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.elevator-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.elevator-btn:active {
    transform: scale(0.95);
}

#elevator-up {
    right: 20px;
}

#elevator-down {
    left: 20px;
}

/* Lichtschalter */
.light-btn {
    position: fixed;
    bottom: 120px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    z-index: 100;
    transition: all 0.3s;
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.light-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: var(--color-accent);
}

.light-btn:active {
    transform: scale(0.95);
}

#light-toggle {
    left: 20px;
}

@media (max-width: 768px) {
    .elevator-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
        bottom: 50px;
    }

    #elevator-up {
        left: 10px;
    }

    #elevator-down {
        right: 10px;
    }

    .light-btn {
        width: 40px;
        height: 40px;
        font-size: 16px;
        bottom: 110px;
    }

    #light-toggle {
        left: 10px;
    }
}