:root {
    --primary-bg: #f5f0e6; /* Light beige */
    --secondary-bg: #e0d8c8; /* Darker beige */
    --text-color: #4a3b32; /* Dark brown */
    --accent-color: #8B4513; /* SaddleBrown - main accent */
    --accent-hover: #a0522d; /* Sienna - hover accent */
    --hud-bg: rgba(60, 45, 38, 0.95); /* Darker, almost opaque brown for HUD */
    --hud-text: #f5f0e6;
    --modal-bg: #faf5ed;
    --overlay-bg: rgba(0, 0, 0, 0.7);
    --disabled-color: #c5b7a7;
    --found-crest-color: #4CAF50; /* Green for found items */

    --font-main: 'Roboto', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-accent: 'Orbitron', 'Georgia', 'Times New Roman', Times, serif; /* Orbitron for gamey feel */

    --transition-speed: 0.3s;
    --animation-speed: 0.5s;
    /* Dark Mode colors*/
    --dark-primary-color: #000;
    --dark-primary-text:#fff;
}

body {
    font-family: var(--font-main);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--primary-bg);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden; /* Prevent horizontal scroll */
}


#game-container {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    width: 100%;
    max-width: 1400px; /* Max width for very large screens */
    margin: 0 auto;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

#game-hud {
    background-color: var(--hud-bg);
    color: var(--hud-text);
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-accent);
    font-size: 0.9em;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hud-left, .hud-center, .hud-right {
    flex: 1;
    display: flex;
    align-items: center;
}
.hud-center {
    justify-content: center;
    font-weight: 700;
}
.hud-right {
    justify-content: flex-end;
    gap: 15px;
}
#current-location-hud {
    font-weight: bold;
}
.hud-button {
    background-color: var(--accent-color);
    color: var(--hud-text);
    border: none;
    padding: 8px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-accent);
    transition: background-color var(--transition-speed);
    text-decoration: none;
    font-size: 0.9em;
}
.hud-button:hover {
    background-color: var(--accent-hover);
}
.back-to-main-site {
    background-color: transparent;
    border: 1px solid var(--accent-color);
}
.back-to-main-site:hover {
    background-color: var(--accent-color);
    color: var(--hud-text);
}


#tour-view {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative; /* For loading overlay */
}

#image-wrapper {
    position: relative;
    max-width: 900px; /* Max image width */
    width: 100%;
    aspect-ratio: 16 / 10; /* Maintain aspect ratio, adjust as needed */
    background-color: var(--secondary-bg);
    border: 3px solid var(--accent-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(74, 59, 50, 0.25);
    display: flex; /* For centering image if smaller than wrapper */
    justify-content: center;
    align-items: center;
}

#tour-image {
    display: block;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain; /* Use 'cover' or 'contain' based on preference */
    border-radius: 6px;
    opacity: 1;
    transition: opacity var(--animation-speed) ease-in-out;
}
#tour-image.image-loading {
    opacity: 0.3;
}

#interactive-elements-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Allow clicks to pass through unless on an element */
}

.hotspot, .hidden-crest {
    position: absolute;
    transform: translate(-50%, -50%);
    cursor: pointer;
    pointer-events: all; /* Specific elements can be clicked */
    transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease;
    will-change: transform, opacity;
}

.hotspot {
    width: 32px;
    height: 32px;
    background-color: rgba(192, 160, 128, 0.7); /* Tan-ish */
    border: 2px solid var(--primary-bg);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: pulse-hotspot 2.5s infinite ease-in-out;
}
.hotspot::after { /* Optional inner dot */
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--primary-bg);
    border-radius: 50%;
}
.hotspot:hover, .hotspot:focus-visible {
    background-color: rgba(160, 82, 45, 0.9); /* Sienna-ish */
    transform: translate(-50%, -50%) scale(1.2);
    animation-play-state: paused;
}
@keyframes pulse-hotspot {
    0% { box-shadow: 0 0 0 0 rgba(192, 160, 128, 0.7); }
    70% { box-shadow: 0 0 0 12px rgba(192, 160, 128, 0); }
    100% { box-shadow: 0 0 0 0 rgba(192, 160, 128, 0); }
}

.hidden-crest {
    width: 35px; /* Adjust based on your crest image size */
    height: 35px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.7; /* Slightly transparent to blend in */
    border-radius: 50%; /* Optional: if crest is circular */
    animation: shimmer-crest 3s infinite alternate ease-in-out;
}
.hidden-crest:hover, .hidden-crest:focus-visible {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.3);
    animation-play-state: paused;
    box-shadow: 0 0 15px var(--accent-hover);
}
.hidden-crest.found {
    opacity: 0.3 !important; /* Visually mark as found */
    transform: translate(-50%, -50%) scale(0.8);
    cursor: default;
    pointer-events: none; /* Can't click again */
    animation: none;
    filter: grayscale(80%);
}
@keyframes shimmer-crest {
    0% { filter: brightness(100%) saturate(100%); }
    50% { filter: brightness(120%) saturate(120%); }
    100% { filter: brightness(100%) saturate(100%); }
}

#navigation-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background-color: var(--secondary-bg);
    border-top: 1px solid var(--accent-color);
}
.nav-arrow-button {
    background-color: var(--accent-color);
    color: var(--hud-text);
    border: none;
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}
.nav-arrow-button svg {
    width: 28px;
    height: 28px;
    fill: currentColor;
}
.nav-arrow-button:hover:not(:disabled) {
    background-color: var(--accent-hover);
    transform: scale(1.1);
}
.nav-arrow-button:disabled {
    background-color: var(--disabled-color);
    cursor: not-allowed;
    opacity: 0.6;
}

#thumbnail-gallery-container {
    display: flex;
    gap: 10px;
    overflow-x: auto; /* Allow scrolling if too many thumbnails */
    padding: 5px 0;
    flex-grow: 1;
    justify-content: center;
    align-items: center;
}
.thumbnail-item {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border: 3px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: border-color var(--transition-speed), transform var(--transition-speed), opacity var(--transition-speed);
    opacity: 0.7;
}
.thumbnail-item:hover {
    opacity: 1;
    transform: scale(1.05);
    border-color: var(--accent-hover);
}
.thumbnail-item.active-thumbnail {
    border-color: var(--accent-color);
    opacity: 1;
    transform: scale(1.1);
    box-shadow: 0 0 10px var(--accent-color);
}

/* Modal System */
#modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--overlay-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility 0s var(--transition-speed) ease;
}
#modal-overlay:not(.modal-hidden) {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
#modal-content {
    background-color: var(--modal-bg);
    padding: 25px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.2);
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: scale(0.9);
    transition: transform var(--transition-speed) ease;
}
#modal-overlay:not(.modal-hidden) #modal-content {
    transform: scale(1);
}
#modal-close-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 2em;
    color: var(--text-color);
    cursor: pointer;
    line-height: 1;
}
#modal-close-button:hover {
    color: var(--accent-color);
}
#modal-title {
    font-family: var(--font-accent);
    color: var(--accent-color);
    margin-top: 0;
    margin-bottom: 15px;
    font-size: 1.8em;
    text-align: center;
}
#modal-body {
    margin-bottom: 20px;
    font-size: 1.1em;
    line-height: 1.7;
}
#modal-body strong {
    color: var(--accent-color);
}
#modal-actions {
    text-align: center;
}
.modal-button {
    background-color: var(--accent-color);
    color: var(--hud-text);
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-family: var(--font-accent);
    transition: background-color var(--transition-speed);
    text-decoration: none;
    font-size: 1.1em;
    display: inline-block;
    margin-top: 10px;
}
.modal-button:hover {
    background-color: var(--accent-hover);
}
.certificate-title {
    color: var(--found-crest-color);
    font-size: 1.5em;
}

/* Loading Overlay */
#loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(245, 240, 230, 0.9); /* var(--primary-bg) with alpha */
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility 0s var(--transition-speed);
}
#loading-overlay.loading-active {
    opacity: 1;
    visibility: visible;
    transition-delay: 0s;
}
.spinner {
    border: 5px solid var(--secondary-bg);
    border-top: 5px solid var(--accent-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
#loading-overlay p {
    font-family: var(--font-accent);
    font-size: 1.2em;
    color: var(--accent-color);
}

footer {
    background: var(--hud-bg);
    color: var(--hud-text);
    text-align: center;
    padding: 15px 0;
    font-size: 0.8em;
    margin-top: auto; /* Pushes footer to bottom if content is short */
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    #game-hud {
        flex-direction: column;
        gap: 8px;
        padding: 10px;
        font-size: 0.8em;
    }
    .hud-left, .hud-center, .hud-right {
        width: 100%;
        justify-content: center;
    }
    #image-wrapper {
        aspect-ratio: 4 / 3; /* More square on mobile */
    }
    #navigation-controls {
        padding: 10px;
    }
    .nav-arrow-button {
        width: 38px;
        height: 38px;
    }
    .nav-arrow-button svg {
        width: 22px;
        height: 22px;
    }
    #thumbnail-gallery-container {
        gap: 8px;
    }
    .thumbnail-item {
        width: 60px;
        height: 45px;
    }
    #modal-title {
        font-size: 1.5em;
    }
    #modal-body {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .hud-button {
        padding: 6px 10px;
        font-size: 0.8em;
    }
     #current-location-hud {
        font-size: 1.1em; /* Make current location name a bit more prominent on small screens */
    }
}