* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    min-height: 100vh;
    background: #000;
    color: #fff;
    overflow: hidden;
    position: fixed;
    width: 100%;
    height: 100%;
}

.container {
    height: 100vh;
    width: 100vw;
    display: flex;
    flex-direction: column;
    position: relative;
}

.image-container {
    flex: 1;
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

.image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#displayedImage {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    user-select: none;
    -webkit-user-select: none;
    transition: transform 0.3s ease;
    touch-action: none;
}

.controls-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, 
        rgba(0,0,0,0.7) 0%, 
        rgba(0,0,0,0) 20%,
        rgba(0,0,0,0) 80%,
        rgba(0,0,0,0.7) 100%);
    opacity: 1;
    transition: opacity 0.3s ease;
    z-index: 10;
    pointer-events: none;
}

.controls-overlay.hidden {
    opacity: 0;
}

.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 20;
    pointer-events: auto;
}

.bottom-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 20;
    pointer-events: auto;
}

.btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 0.9em;
    cursor: pointer;
    backdrop-filter: blur(5px);
    transition: background 0.3s ease;
    pointer-events: auto;
}

.btn:active {
    background: rgba(255, 255, 255, 0.3);
}

.image-counter {
    background: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 0.9em;
    pointer-events: auto;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: none;
}

.navigation-arrows {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    pointer-events: none;
    z-index: 20;
    display: none;
}

.nav-arrow {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: auto;
    transition: background 0.3s ease;
}

.nav-arrow:active {
    background: rgba(255, 255, 255, 0.3);
}

.gesture-hint {
    position: fixed;
    bottom: 70px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8em;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 30;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.zoom-in {
    transform: scale(2);
}

.swipe-transition {
    transition: transform 0.3s ease;
}

.swipe-up-out {
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.swipe-down-out {
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.centering-transition {
    transition: transform 0.3s ease;
}