:root {
    --reader-bg-color: #f2f2f2;
    --reader-text-color: #000000;
}

html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    background-color: var(--reader-bg-color);
    color: var(--reader-text-color);
    font-family: sans-serif;
    -webkit-tap-highlight-color: transparent;
    overflow: hidden;
}

.reader-app {
    position: relative;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.reader-toolbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 4001;
    background: #2c2c2e;
    color: #f1f1f1;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: opacity 0.3s ease;
}

.reader-toolbar.hidden {
    opacity: 0;
    pointer-events: none;
}

.control-set {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.page-container {
    margin-top: 0;
    transition: margin-top 0.3s ease;
    flex: 1;
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    background: var(--reader-bg-color);
}

.page {
    flex: 0 0 100vw;
    height: calc(100vh - 60px);
    scroll-snap-align: center;
    overflow: hidden;
    padding: 2rem 2rem 1rem;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    position: relative;
    z-index: 2000;
    overflow-wrap: break-word;
    font-size: 1.2rem;
    line-height: 1.5;
}

.page a {
    position: relative;
    z-index: 3000;
    pointer-events: auto;
}

.page-container::-webkit-scrollbar {
    display: none;
}

.nav-zone {
    position: fixed;
    top: 0;
    height: 100%;
    z-index: 3500;
    cursor: pointer;
}

.nav-left {
    left: 0;
    width: 25%;
}

.nav-right {
    right: 0;
    width: 25%;
}

.nav-center {
    left: 25%;
    width: 50%;
    z-index: 3600;
}

@media (min-width: 1024px) {
    .page-container {
        max-width: 800px;
        margin: 0 auto;
        padding: 0;
    }
    .page {
        flex: 0 0 100%;
        width: 100%;
        padding: 3rem 4rem 2rem;
    }
}