:root {
    --aar-bg: #eef0f4;
    --aar-toolbar: #292a34;
    --aar-sidebar: #2d2d37;
    --aar-sidebar-soft: #373843;
    --aar-paper: #ffffff;
    --aar-text: #20212a;
    --aar-muted: #9b9daa;
    --aar-line: rgba(255,255,255,.16);
    --aar-accent: #22c7df;
    --aar-link: #54d6e9;
    --aar-danger: #ffdf85;
    --aar-shadow: 0 10px 30px rgba(14,18,35,.18);
    --aar-sidebar-width: 31rem;
    font-family: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body.aar-reader { color: var(--aar-text); background: var(--aar-bg); font-family: Arial, Helvetica, sans-serif; }
button, input, textarea { font: inherit; }
a { color: inherit; }

.aar-toolbar {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 40;
    min-height: 4.35rem;
    display: grid;
    grid-template-columns: minmax(18rem, 1fr) auto minmax(18rem, 1fr);
    align-items: center;
    gap: 1rem;
    padding: .7rem 1.5rem;
    color: #fff;
    background: var(--aar-toolbar);
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.aar-toolbar__left, .aar-toolbar__actions { display: flex; align-items: center; gap: .75rem; min-width: 0; }
.aar-toolbar__actions { justify-content: flex-end; }
.aar-toolbar__middle { display: flex; align-items: center; gap: .55rem; color: #e7e8ed; font-size: .79rem; letter-spacing: .04em; }
.aar-format-label { padding: .28rem .5rem; border: 1px solid #777985; border-radius: .15rem; color: #d9dae1; font-size: .68rem; }
.aar-page-state { color: #aeb0bb; min-width: 3.5rem; }
.aar-journal-link { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-decoration: none; font-weight: 700; color: #f1f2f6; }
.aar-icon-button, .aar-toolbar-button {
    border: 0;
    border-radius: .28rem;
    background: transparent;
    color: #e8e9ef;
    min-height: 2.35rem;
    padding: .55rem .7rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .35rem;
    cursor: pointer;
}
.aar-icon-button:hover, .aar-toolbar-button:hover { background: rgba(255,255,255,.1); }
.aar-toolbar-button--primary { border: 1px solid rgba(255,255,255,.6); border-radius: 1.25rem; padding-inline: 1rem; font-weight: 700; }

.aar-shell { position: fixed; inset: 4.35rem 0 0 0; display: grid; grid-template-columns: var(--aar-sidebar-width) minmax(0,1fr); }
.aar-shell.is-sidebar-hidden { grid-template-columns: 0 minmax(0,1fr); }

.aar-sidebar {
    min-width: 0;
    color: #f4f4f7;
    background: var(--aar-sidebar);
    overflow: hidden;
    box-shadow: var(--aar-shadow);
    transition: width .22s ease, transform .22s ease;
}
.aar-shell.is-sidebar-hidden .aar-sidebar { width: 0; transform: translateX(-100%); }
.aar-sidebar__tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 1.85rem 2rem 1.25rem; border: 1px solid #bfc0c8; border-radius: .15rem; overflow: hidden; }
.aar-sidebar__tabs button { min-height: 3rem; border: 0; background: transparent; color: #a6a8b5; font-weight: 700; letter-spacing: .02em; cursor: pointer; }
.aar-sidebar__tabs button.is-active { color: #282934; background: #fff; }
.aar-panel { height: calc(100vh - 10.7rem); overflow: auto; padding: .25rem 2.15rem 3rem; scrollbar-width: thin; scrollbar-color: #626470 transparent; }
.aar-panel[hidden] { display: none; }

.aar-journal-card { display: grid; grid-template-columns: 8.2rem 1fr; gap: 1.35rem; align-items: start; margin-bottom: 2rem; }
.aar-journal-card img, .aar-cover-placeholder { width: 8.2rem; height: 10.5rem; object-fit: cover; background: #fff; box-shadow: 0 4px 16px rgba(0,0,0,.25); }
.aar-cover-placeholder { display: grid; place-items: center; color: #25335b; font-size: 2.6rem; font-family: Georgia, serif; font-weight: 700; }
.aar-journal-card strong { display: block; margin: .2rem 0 .55rem; font-size: 1.05rem; line-height: 1.35; }
.aar-journal-card a, .aar-meta a { color: var(--aar-link); text-underline-offset: .15em; overflow-wrap: anywhere; }
.aar-kicker { color: #b7b8c1; font-size: .76rem; font-weight: 800; letter-spacing: .12em; margin-bottom: .55rem; }
.aar-sidebar-title { margin: 0; font-size: 1.48rem; line-height: 1.35; font-weight: 600; }
.aar-authors { color: #b9bbc5; line-height: 1.55; }
.aar-inline-actions { display: flex; gap: .65rem; margin: 1.25rem 0; }
.aar-inline-actions button { border: 0; border-radius: .18rem; padding: .55rem .72rem; color: #eef0f4; background: #555762; font-size: .75rem; font-weight: 800; cursor: pointer; }
.aar-inline-actions button:hover { background: #696b77; }
.aar-meta { padding: 1.15rem 0; border-top: 1px solid var(--aar-line); }
.aar-meta span { display: block; color: #dadbe2; margin-bottom: .55rem; font-size: .75rem; font-weight: 800; letter-spacing: .08em; }
.aar-meta strong, .aar-meta a { font-size: .94rem; line-height: 1.45; }

.aar-contents-heading { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.aar-contents-heading h2 { margin: 0; font-size: 1.45rem; }
.aar-contents-heading button { border: 1px solid #676975; border-radius: .25rem; background: transparent; color: #fff; width: 2.3rem; height: 2.3rem; cursor: pointer; }
.aar-contents-status { color: #b7b9c3; line-height: 1.55; font-size: .88rem; }
.aar-contents-list { list-style: none; padding: 0; margin: 1rem 0 0; counter-reset: aar-content; }
.aar-contents-list li { margin: 0; border-top: 1px solid var(--aar-line); }
.aar-contents-list button { width: 100%; border: 0; background: transparent; color: #f0f1f5; text-align: left; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 1rem; padding: .85rem 0; cursor: pointer; line-height: 1.35; }
.aar-contents-list button:hover { color: var(--aar-link); }
.aar-contents-list .aar-content-page { color: #aeb0ba; }
.aar-contents-list .level-2 { padding-left: 1rem; color: #cfd0d7; font-size: .9rem; }
.aar-contents-list .level-3 { padding-left: 2rem; color: #b9bbc4; font-size: .86rem; }

.aar-reader-main { min-width: 0; position: relative; background: #dfe1e7; }
.aar-reader-main iframe { display: block; width: 100%; height: 100%; border: 0; background: #dfe1e7; }
.aar-version-notice { position: absolute; z-index: 4; inset: 0 0 auto 0; padding: .7rem 1rem; color: #4d3810; background: var(--aar-danger); font-size: .88rem; }

.aar-loading { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; color: #eef0f5; background: #2d2e38; transition: opacity .25s ease, visibility .25s ease; }
.aar-loading.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.aar-loading__panel { display: grid; justify-items: center; gap: .8rem; max-width: 28rem; padding: 2rem; text-align: center; }
.aar-loading__panel strong { font-size: 1.35rem; }
.aar-loading__panel span:last-child { color: #bfc1ca; }
.aar-spinner { width: 2.4rem; height: 2.4rem; border: .24rem solid rgba(255,255,255,.18); border-top-color: var(--aar-accent); border-radius: 50%; animation: aar-spin .85s linear infinite; }
@keyframes aar-spin { to { transform: rotate(360deg); } }

.aar-dialog { width: min(38rem, calc(100vw - 2rem)); border: 0; border-radius: .45rem; padding: 0; box-shadow: 0 22px 70px rgba(0,0,0,.35); }
.aar-dialog::backdrop { background: rgba(20,21,28,.72); }
.aar-dialog form { position: relative; padding: 1.5rem; }
.aar-dialog h2 { margin-top: 0; }
.aar-dialog textarea { width: 100%; resize: vertical; border: 1px solid #c8cbd5; border-radius: .25rem; padding: .85rem; line-height: 1.5; }
.aar-dialog__close { position: absolute; top: .75rem; right: .85rem; border: 0; background: transparent; font-size: 1.6rem; cursor: pointer; }
.aar-dialog__actions { display: flex; justify-content: flex-end; gap: .65rem; margin-top: 1rem; }
.aar-dialog__actions button { border: 1px solid #334; border-radius: .25rem; background: #fff; padding: .65rem .9rem; cursor: pointer; }
.aar-dialog__actions button:first-child { color: #fff; background: #1d347a; }

@media (max-width: 1050px) {
    :root { --aar-sidebar-width: 25rem; }
    .aar-toolbar { grid-template-columns: minmax(12rem,1fr) auto minmax(12rem,1fr); }
    .aar-toolbar-button span { display: none; }
    .aar-journal-card { grid-template-columns: 6.5rem 1fr; }
    .aar-journal-card img, .aar-cover-placeholder { width: 6.5rem; height: 8.5rem; }
}

@media (max-width: 760px) {
    .aar-toolbar { grid-template-columns: 1fr auto; min-height: 3.8rem; padding: .55rem .7rem; }
    .aar-toolbar__middle { display: none; }
    .aar-toolbar__actions { gap: .2rem; }
    .aar-toolbar-button { padding-inline: .5rem; }
    .aar-shell { inset: 3.8rem 0 0 0; grid-template-columns: minmax(0,1fr); }
    .aar-sidebar { position: absolute; z-index: 20; inset: 0 auto 0 0; width: min(90vw, 24rem); box-shadow: 12px 0 30px rgba(0,0,0,.35); }
    .aar-shell.is-sidebar-hidden .aar-sidebar { width: min(90vw, 24rem); }
    .aar-shell:not(.is-mobile-sidebar-open) .aar-sidebar { transform: translateX(-105%); }
    .aar-shell.is-mobile-sidebar-open .aar-sidebar { transform: translateX(0); }
    .aar-panel { height: calc(100vh - 9.7rem); }
    .aar-journal-link { max-width: 42vw; }
}