:root {
    --bg: #f3efe6;
    --ink: #1d1a16;
    --muted: #6d655c;
    --line: #ddd4c6;
    --card: #fffdf8;
    --accent: #0d5c4d;
    --accent-ink: #f7fffc;
    --in: #fffdf8;
    --out: #d7efe4;
    --draft: #f0e6cf;
    --alert: #f8e4e0;
    --alert-ink: #6d2420;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--ink);
    font-family: "Segoe UI", "Hiragino Sans", "Noto Sans JP", "Yu Gothic UI", sans-serif;
    line-height: 1.6;
}

a { color: var(--accent); }

.site-header,
main,
.site-footer {
    width: min(760px, calc(100% - 32px));
    margin-left: auto;
    margin-right: auto;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 16px;
    padding: 22px 0 12px;
    border-bottom: 1px solid var(--line);
}

.brand {
    color: var(--ink);
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.02em;
}

nav { display: flex; gap: 16px; }

nav a { text-decoration: none; }

main { padding: 28px 0 48px; }

h1 { font-size: 1.7rem; line-height: 1.3; margin: 0 0 8px; }

h2 { font-size: 1.1rem; margin: 0 0 12px; }

.lead, .meta, .notes, .site-footer { color: var(--muted); }

.site-footer {
    padding-bottom: 32px;
    font-size: 0.85rem;
}

.notes { padding-left: 1.2rem; }

.empty, .result, .upload, .upload-sample, .history, .alert, .login {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 16px 18px;
    margin: 16px 0;
}

.alert {
    background: var(--alert);
    color: var(--alert-ink);
    border-color: #e3c2bc;
}

.button, button, .upload button {
    display: inline-block;
    background: var(--accent);
    color: var(--accent-ink);
    border: 0;
    border-radius: 999px;
    padding: 8px 16px;
    text-decoration: none;
    font: inherit;
    cursor: pointer;
}

.upload-sample button {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

label { display: block; margin-bottom: 8px; }

input[type="file"],
input[type="text"],
input[type="password"] {
    display: block;
    margin-bottom: 12px;
    max-width: 100%;
}

input[type="text"],
input[type="password"] {
    width: min(100%, 22rem);
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    font: inherit;
    background: #fff;
}

.password-field {
    position: relative;
    width: min(100%, 22rem);
    margin-bottom: 12px;
}

.password-field input[type="text"],
.password-field input[type="password"] {
    width: 100%;
    margin-bottom: 0;
    padding-right: 44px;
}

.password-toggle {
    position: absolute;
    top: 1px;
    right: 1px;
    bottom: 1px;
    width: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--muted);
}

.password-toggle:hover,
.password-toggle:focus-visible {
    color: var(--ink);
    background: var(--bg);
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.password-toggle svg {
    width: 22px;
    height: 22px;
    display: block;
}

.password-toggle svg[hidden] {
    display: none;
}

.button-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    margin-left: 8px;
}

.logout-form { margin: 0; }

.logout-form button,
.link-button {
    background: transparent;
    color: var(--accent);
    border: 0;
    border-radius: 0;
    padding: 0;
}

.badge {
    display: inline-block;
    margin-right: 6px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--accent);
    color: var(--accent-ink);
    font-size: 0.75rem;
}

.bubble-image { margin: 8px 0 0; }

.bubble-image img {
    display: block;
    max-width: min(100%, 16rem);
    height: auto;
    border-radius: 8px;
}

.bubble-file { margin: 8px 0 0; }

.thread-list, .transcript {
    list-style: none;
    padding: 0;
    margin: 0;
}

.thread {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    color: inherit;
    text-decoration: none;
}

.thread-top, .bubble-meta, .thread-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
    font-size: 0.86rem;
}

.thread-title { color: var(--ink); font-weight: 700; }

.thread-preview {
    color: var(--ink);
    overflow-wrap: anywhere;
}

.transcript { display: flex; flex-direction: column; gap: 10px; }

.bubble {
    max-width: min(100%, 34rem);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px 12px;
}

.bubble.in { background: var(--in); margin-right: auto; }

.bubble.out { background: var(--out); margin-left: auto; }

.bubble.draft { background: var(--draft); margin-left: auto; margin-right: auto; }

.bubble-body {
    margin: 4px 0 0;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.bubble-meta { margin: 0; justify-content: flex-start; }

.result dl { display: grid; gap: 6px; margin: 0 0 12px; }

.result dl div { display: flex; justify-content: space-between; gap: 12px; }

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

.result dd { margin: 0; font-variant-numeric: tabular-nums; }

table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }

th, td {
    text-align: left;
    padding: 6px 8px 6px 0;
    border-bottom: 1px solid var(--line);
    vertical-align: top;
}

.pager { display: flex; gap: 16px; align-items: center; margin-top: 18px; }

.back { margin-bottom: 8px; }

code {
    font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
    font-size: 0.92em;
}

a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

@media (max-width: 640px) {
    .site-header { flex-direction: column; align-items: flex-start; }
    table { display: block; overflow-x: auto; }
}

body.has-split {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

body.has-split .site-header,
body.has-split main,
body.has-split .site-footer {
    width: min(1100px, calc(100% - 24px));
}

body.has-split main {
    flex: 1;
    min-height: 0;
    display: flex;
    padding: 12px 0;
}

body.has-split .site-footer {
    padding-bottom: 12px;
}

.split {
    flex: 1;
    min-height: 0;
    display: grid;
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: hidden;
}

.split-list,
.split-detail {
    min-height: 0;
    overflow: auto;
}

.split-list {
    border-right: 1px solid var(--line);
    padding: 12px 12px 20px;
}

.split-detail {
    padding: 16px 18px 28px;
}

.pane-search {
    position: sticky;
    top: 0;
    z-index: 1;
    margin: -12px -12px 8px;
    padding: 12px;
    background: var(--card);
    border-bottom: 1px solid var(--line);
}

.pane-search label {
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 0.85rem;
}

.pane-search input {
    width: 100%;
    margin-bottom: 0;
}

.pane-count { margin: 8px 0; }

.pane-placeholder { margin: 8px 0 0; }

.thread.is-selected {
    background: var(--out);
    border-radius: 8px;
    padding-left: 8px;
    padding-right: 8px;
}

.split-back { display: none; }

@media (max-width: 800px) {
    body.has-split {
        display: block;
        height: auto;
        overflow: auto;
    }

    body.has-split .site-header,
    body.has-split main,
    body.has-split .site-footer {
        width: min(760px, calc(100% - 32px));
    }

    body.has-split main {
        display: block;
        padding: 16px 0 32px;
    }

    .split {
        display: block;
        overflow: visible;
    }

    .split-list,
    .split-detail {
        overflow: visible;
        border-right: 0;
    }

    .split-show-list .split-detail { display: none; }

    .split-show-detail .split-list { display: none; }

    .split-back { display: block; }
}