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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #000;
    color: #fff;
    overflow: hidden;
}

#slideshow-container {
    width: 100vw;
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

#slide-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden; /* Ensure zoomed content doesn't overflow */
}

#current-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    position: relative;
    z-index: 1;
    transform-origin: center center;
    will-change: transform; /* Optimize for smooth transforms */
}

#face-overlays {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

.face-box {
    position: absolute;
    border: 3px solid #00ff00;
    background: rgba(0, 255, 0, 0.1);
    border-radius: 4px;
    transition: all 0.3s ease;
}

.face-label {
    position: absolute;
    top: -25px;
    left: 0;
    background: rgba(0, 255, 0, 0.9);
    color: #000;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: bold;
    white-space: nowrap;
    min-width: 60px;
    text-align: center;
}

.face-box.person-0 {
    border-color: #ff6b6b;
    background: rgba(255, 107, 107, 0.1);
}

.face-box.person-0 .face-label {
    background: rgba(255, 107, 107, 0.9);
    color: #fff;
}

.face-box.person-1 {
    border-color: #4ecdc4;
    background: rgba(78, 205, 196, 0.1);
}

.face-box.person-1 .face-label {
    background: rgba(78, 205, 196, 0.9);
    color: #000;
}

.face-box.person-2 {
    border-color: #45b7d1;
    background: rgba(69, 183, 209, 0.1);
}

.face-box.person-2 .face-label {
    background: rgba(69, 183, 209, 0.9);
    color: #fff;
}

.face-box.person-3 {
    border-color: #f9ca24;
    background: rgba(249, 202, 36, 0.1);
}

.face-box.person-3 .face-label {
    background: rgba(249, 202, 36, 0.9);
    color: #000;
}

.face-box.person-4 {
    border-color: #6c5ce7;
    background: rgba(108, 92, 231, 0.1);
}

.face-box.person-4 .face-label {
    background: rgba(108, 92, 231, 0.9);
    color: #fff;
}

#slide-info {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 8px;
    z-index: 3;
    max-width: 400px;
}

#image-name {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 5px;
    color: #fff;
}

#slide-counter {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 5px;
}

#people-count {
    font-size: 14px;
    color: #4ecdc4;
}

#controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

#controls button {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    padding: 10px 15px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
    color: #333;
}

#controls button:hover {
    background: rgba(255, 255, 255, 1);
    transform: scale(1.05);
}

#controls button:active {
    transform: scale(0.95);
}

#loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 24px;
    color: #ccc;
    z-index: 10;
}

#error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: #ff6b6b;
    background: rgba(0, 0, 0, 0.8);
    padding: 20px;
    border-radius: 8px;
    z-index: 10;
}

.hidden {
    display: none;
}

.boxes-hidden .face-box {
    opacity: 0;
}

/* Fade transition for slides */
.fade-out {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.fade-in {
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* Progress bar */
#progress-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 4px;
    background: #4ecdc4;
    transition: width 1s linear;
    z-index: 5;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    #slide-info {
        top: 10px;
        left: 10px;
        right: 10px;
        padding: 10px;
        max-width: none;
    }
    
    #controls {
        bottom: 10px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    #controls button {
        padding: 8px 12px;
        font-size: 14px;
    }
    
    .face-label {
        font-size: 12px;
        padding: 1px 6px;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
    background-color: #333;
    color: white;
    margin: 10% auto;
    border-radius: 10px;
    width: 400px;
    max-width: 90%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid #555;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.2em;
}

.close {
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: #aaa;
    transition: color 0.3s;
}

.close:hover {
    color: white;
}

.modal-body {
    padding: 20px;
}

.setting-group {
    margin-bottom: 20px;
}

.setting-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

.setting-group input[type="range"] {
    width: 100%;
    margin-bottom: 8px;
}

.setting-group input[type="checkbox"] {
    margin-right: 8px;
    transform: scale(1.2);
}

.setting-group input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #555;
    border-radius: 4px;
    background: #222;
    color: white;
    font-size: 14px;
    margin-bottom: 4px;
}

.setting-group small {
    color: #aaa;
    font-size: 12px;
}

#transition-value {
    font-weight: bold;
    color: #4CAF50;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid #555;
    text-align: right;
}

.modal-footer button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 10px 20px;
    margin-left: 10px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

.modal-footer button:hover {
    background: #45a049;
}

.modal-footer button#cancel-settings {
    background: #666;
}

.modal-footer button#cancel-settings:hover {
    background: #555;
}

/* Hide UI Styles */
.ui-hidden #controls,
.ui-hidden #slide-info,
.ui-hidden .face-box,
.ui-hidden #face-overlays {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ui-hidden.show-ui-hint::after {
    content: 'Press H to show UI';
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    font-family: Arial, sans-serif;
    font-size: 14px;
    z-index: 1000;
    opacity: 1;
    visibility: visible;
    animation: fadeInOut 3s ease-in-out;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; }
    20%, 80% { opacity: 1; }
}