:root {
    --bg: #fff;
    --fg: #0f0f0f;
    --surface: #f7f7f7;
    --muted: #6e6e6e;
    --border: #d7d7d7;
    --accent: #0f0f0f;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --nav-height: 55px;
}

.legal-page { max-width: 820px; margin: 0 auto; line-height: 1.6; overflow-wrap: anywhere; }
.legal-page section { border-top: 1px solid var(--border); padding: 16px 0; margin-top: 20px; }
.legal-page h1 { font-size: 30px; }
.legal-page h2 { font-size: 21px; }
a { color: var(--fg); text-underline-offset: 3px; }

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html {
    overflow-y: scroll;
    scrollbar-color: var(--muted) var(--border);
    scrollbar-width: thin;
}

html::-webkit-scrollbar { width: 7px; }
html::-webkit-scrollbar-track { background: var(--border); }
html::-webkit-scrollbar-thumb { background: var(--muted); }

body {
    overflow-x: hidden;
}

button,
input,
select,
textarea {
    font: inherit;
}

[hidden] { display: none !important; }
.toggle-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin: 20px 0; }
.toggle-row input { width: 22px; height: 22px; accent-color: var(--accent); flex-shrink: 0; }
.times-list .row { margin: 10px 0; }
.times-list input { min-width: 0; flex: 1; }
.color-swatch { width: 48px; height: 40px; padding: 0; border: 1px solid var(--border); }
.colors-panel .row { margin-top: 10px; }
.color-wheel { display: block; width: 256px; max-width: 100%; height: auto; margin: auto; touch-action: none; }
.color-preview { height: 32px; margin-top: 12px; border: 1px solid var(--border); }
.history-row { margin-bottom: 12px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); display: grid; gap: 6px; }
.modal-box { max-height: 90dvh; overflow-y: auto; }
.social-message { padding: 16px 0; border-bottom: 1px solid var(--border); overflow-wrap: anywhere; }
.social-message button { margin: 10px 8px 0 0; }
progress { accent-color: var(--accent); }
.content-group h3 { font-size: 18px; overflow-wrap: anywhere; }
input[type="range"] { accent-color: var(--accent); padding: 0; }
input[type="range"] { width: 100%; min-height: 36px; }
select { width: 100%; min-height: 48px; color: var(--fg); background: var(--bg); border: 1px solid var(--border); padding: 10px; }
.day strong { min-width: 0; overflow-wrap: anywhere; }
.title, .book-title, .history-row { overflow-wrap: anywhere; }

#app {
    min-height: 100vh;
    padding: calc(18px + env(safe-area-inset-top, 0px)) 22px calc(86px + var(--safe-bottom));
}

body.reader-open #app {
    padding-bottom: calc(190px + var(--safe-bottom));
}

#nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 6px;
    padding: 6px 6px calc(6px + var(--safe-bottom));
    background: var(--bg);
    border-top: 1px solid var(--border);
}

.topline {
    color: var(--muted);
    font-size: 13px;
    margin-bottom: 18px;
}

.row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.wrap {
    flex-wrap: wrap;
    margin-top: 10px;
}

.spread {
    justify-content: space-between;
}

.title {
    margin: 0;
    font-size: 34px;
    line-height: 1.1;
    font-weight: 800;
}

.subtitle {
    margin: 0;
    color: var(--muted);
}

.section {
    margin-top: 24px;
}

.settings-group,
.content-group {
    min-width: 0;
    overflow-wrap: anywhere;
    margin: 0 0 14px;
    padding: 14px 16px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
}

.settings-title,
.group-title {
    margin: 0 0 12px;
    color: var(--fg);
    font-size: 19px;
}

.label {
    display: block;
    margin: 16px 0 6px;
    color: var(--muted);
    font-size: 14px;
}

.book-row {
    display: grid;
    grid-template-columns: 74px 1fr;
    gap: 16px;
    align-items: center;
    margin-bottom: 12px;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    cursor: pointer;
}

.cover {
    width: 74px;
    height: 104px;
    display: grid;
    place-items: center;
    background: var(--fg);
    color: var(--bg);
    font-size: 27px;
    font-weight: 800;
    overflow: hidden;
}

.cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.book-title {
    font-size: 20px;
    font-weight: 800;
}

.muted {
    color: var(--muted);
}

.btn,
.nav-btn {
    border: 1px solid var(--fg);
    background: var(--bg);
    color: var(--fg);
    padding: 10px 14px;
    min-height: 42px;
    border-radius: 0;
    font-weight: 750;
    cursor: pointer;
}

.btn.full {
    width: 100%;
}

.btn.active,
.nav-btn.active {
    background: var(--accent);
    color: var(--bg);
}

.btn.danger {
    border-color: var(--fg);
}

.btn.ranking-link { width: 100%; border: 0; border-bottom: 1px solid var(--border); background: transparent; padding: 7px 0; min-height: 0; font-weight: 400; text-align: left; gap: 12px; }
.ranking-link span { min-width: 0; overflow-wrap: anywhere; }
.ranking-link strong { flex-shrink: 0; }
.ranking-link:focus-visible { outline: 2px solid var(--fg); outline-offset: 2px; }
.paper-library { display: grid; gap: 12px; }
.paper-row { display: grid; text-align: left; gap: 6px; width: 100%; overflow-wrap: anywhere; }

input[type="text"],
input[type="search"],
input[type="date"],
input[type="password"],
input[type="number"],
input[type="time"] {
    width: 100%;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--fg);
    padding: 12px;
    border-radius: 0;
    outline: none;
}

textarea.input {
    width: 100%;
    min-height: 150px;
    resize: vertical;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--fg);
    padding: 12px;
    border-radius: 0;
    outline: none;
}

.line {
    display: flex;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    padding: 7px 0;
    font-size: 18px;
}

.days {
    margin-top: 12px;
}

.day {
    display: flex;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.day strong {
    font-size: 19px;
    flex: 1;
}

.day-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.annotation-icon {
    color: var(--fg);
    font-size: 18px;
    line-height: 1;
}

.reader {
    white-space: pre-wrap;
    overflow-wrap: break-word;
    line-height: 1.62;
    font-size: calc(18px * var(--scale, 1));
    padding-bottom: 24px;
}

.reader-highlight {
    color: inherit;
    background: rgba(127, 127, 127, .32);
    background: color-mix(in srgb, var(--fg) 24%, transparent);
}

.reader-controls {
    display: grid;
    grid-template-columns: minmax(84px, 1fr) minmax(100px, 1.4fr) minmax(84px, 1fr);
    align-items: center;
    gap: 10px;
}

.reader-controls > :last-child { justify-self: end; }

.reader-position {
    min-width: 0;
    display: grid;
    place-items: center;
    gap: 6px;
}

.reader-completion {
    width: 100%;
    height: 6px;
}

.reader-tools {
    justify-content: center;
    flex-wrap: wrap;
}

.reader-dock {
    position: fixed;
    left: 50%;
    bottom: var(--nav-height);
    z-index: 9;
    display: grid;
    gap: 8px;
    width: min(760px, 100%);
    padding: 10px 14px;
    transform: translateX(-50%);
    background: var(--bg);
    border: 1px solid var(--border);
}

.calendar-head {
    display: grid;
    grid-template-columns: 42px 1fr 42px;
    align-items: center;
    gap: 10px;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0;
    border-left: 1px solid var(--border);
    border-top: 1px solid var(--border);
}

.cell {
    min-height: 48px;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    display: grid;
    place-items: center;
    color: var(--muted);
    background: var(--surface);
}

.cell.today {
    color: var(--fg);
    background: var(--bg);
}

.cell.read {
    color: var(--bg);
    background: var(--fg);
}

.progress {
    width: 100%;
    height: 8px;
    accent-color: var(--accent);
    background: var(--border);
    border: 0;
}

.progress::-webkit-progress-bar {
    background: var(--border);
}

.progress::-webkit-progress-value {
    background: var(--accent);
}

.progress::-moz-progress-bar {
    background: var(--accent);
}

.sync-row {
    border: 1px solid var(--border);
    padding: 12px;
}

.sync-row .progress {
    margin-top: 8px;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 20;
    display: grid;
    place-items: center;
    padding: 22px;
    background: rgba(0, 0, 0, .42);
}

.admin-account {
    padding: 18px 0;
    border-bottom: 1px solid var(--border);
    overflow-wrap: anywhere;
}

.admin-account button {
    margin: 10px 8px 0 0;
}

.modal.hidden {
    display: none;
}

.dialog {
    width: min(420px, 100%);
    background: var(--bg);
    color: var(--fg);
    border: 1px solid var(--border);
    padding: 18px;
}

.dialog h2 {
    margin: 0 0 8px;
    font-size: 20px;
}

.dialog p {
    color: var(--muted);
}

@media (min-width: 760px) {
    #app {
        max-width: 760px;
        margin: 0 auto;
        padding-bottom: 110px;
    }

    #nav {
        left: 50%;
        width: 760px;
        transform: translateX(-50%);
        border: 1px solid var(--border);
    }
}