/*
Copyright (C) 2026 Doan Luu Duc Tai <doan@luuduct.ai>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

:root {
    color-scheme: light dark;
    --background: #fff;
    --foreground: #000;
    --link: #06c;
    --logo: #a00;
    --good: #090;
    --warning: #806000;
    --license: #923900;
    --third-party: #355b3c;
    --muted: #555;
}

* { box-sizing: border-box; }
body { overflow-y: scroll; font: 16px/1.5 monospace, monospace; margin: 0; background: var(--background); color: var(--foreground); }
main { width: 80ch; max-width: calc(100% - 32px); margin: 16px auto; position: relative; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--link); outline-offset: 4px; }
.logo-art { font: inherit; line-height: 1.2; margin: 0 0 2em; overflow-x: auto; }
.logo { color: var(--logo); display: inline-block; }
.logo:hover { text-decoration: none; }
.site-nav { display: flex; flex-wrap: wrap; gap: 2ch; margin: 0 0 2em; }
.site-nav [aria-current] { color: inherit; }
h1, h2, h3 { font: inherit; font-weight: bold; }
h1 { margin: 0; }
h2, h3 { margin: 0 0 1em; }
p { margin: 0 0 1em; }
.introduction { text-align: center; }
.introduction p:last-child { margin-bottom: 0; }
.build-status, .notice { color: var(--warning); }
.ascii-bar { display: flex; white-space: pre; line-height: 1.5; user-select: none; }
.ascii-rule { flex: 1; min-width: 0; overflow: hidden; }
.panel-body { padding: 1em 2ch; background-image: repeating-linear-gradient(to bottom, currentColor 0 1em, transparent 1em 1.5em), repeating-linear-gradient(to bottom, currentColor 0 1em, transparent 1em 1.5em); background-size: 1px 100%; background-position: .5ch 0, calc(100% - .5ch) 0; background-repeat: no-repeat; }
.ascii-panel { margin: 1.5em 0; }
.ascii-field { margin: 1.5em 0; }
.field-heading { white-space: nowrap; font-weight: normal; margin: 0; }
.field-row { background-image: repeating-linear-gradient(to bottom, currentColor 0 1em, transparent 1em 1.5em), repeating-linear-gradient(to bottom, currentColor 0 1em, transparent 1em 1.5em); background-size: 1px 100%; background-position: .5ch 0, calc(100% - .5ch) 0; background-repeat: no-repeat; padding: .25em 2ch; display: flex; gap: 1ch; align-items: baseline; }
.field-row::before { content: '>'; color: var(--good); font-weight: bold; }
.field-end { height: 1.5em; }
button, input, textarea { font: inherit; color: inherit; background: transparent; border-radius: 0; }
button { appearance: none; border: 0; padding: 0; margin: .5em 2ch .5em 0; color: var(--link); font-weight: bold; cursor: pointer; }
button::before { content: '[ < '; }
button::after { content: ' > ]'; }
button:hover { text-decoration: underline; }
button:disabled { opacity: .5; cursor: wait; }
#create-choice, #create-form button, #unlock-form button, #send-form button { color: var(--good); }
#lock { color: var(--logo); }
#retry { color: var(--warning); }
input, textarea { appearance: none; border: 0; padding: 0; margin: 0; min-width: 0; width: 100%; line-height: 1.5; }
input[type=file] { font-size: .875em; }
input[type=file]::file-selector-button { font: inherit; color: var(--link); background: transparent; border: 1px dashed currentColor; margin-right: 1ch; padding: .2em 1ch; cursor: pointer; }
input[type=number] { width: 7ch; }
textarea { resize: vertical; min-height: 7.5em; }
label { display: block; }
section { margin: 2em 0; }
[hidden] { display: none !important; }
.actions { display: flex; flex-wrap: wrap; gap: 0 2ch; }
.actions button { margin-right: 0; }
.chat-heading { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 1ch; }
.chat-heading h2 { margin-bottom: 0; }
#fingerprint, #conversation-fingerprint { overflow-wrap: anywhere; font-size: .875em; color: var(--muted); margin-top: 1em; }
#thread { margin-top: 3em; }
#counts { color: var(--good); }
#history-form { display: flex; flex-wrap: wrap; align-items: baseline; gap: 1ch 2ch; }
#history-form .ascii-field { flex: 0 1 31ch; min-width: 24ch; margin: .5em 0; }
#messages { padding: 0; list-style: none; margin: 2em 0; }
#messages li::before { content: '--------------------------------------------------------------------------------'; display: block; overflow: hidden; white-space: pre; margin: 1em 0; }
#messages p { white-space: pre-wrap; overflow-wrap: anywhere; margin: .5em 0 1em; }
#messages small { color: var(--link); font: inherit; }
#status { min-height: 1.5em; color: var(--link); margin: 2em 0 1em; padding-left: 2ch; position: relative; }
#status::before { content: '>'; color: var(--good); position: absolute; left: 0; font-weight: bold; }
.libre-badge { position: absolute; top: 0; right: 0; color: var(--warning); font-weight: bold; }
.libre-badge > a { color: inherit; text-decoration: underline wavy; text-underline-offset: .2em; }
#js-warning { display: none; position: absolute; top: 2em; right: 0; width: 48ch; max-width: calc(100vw - 32px); padding: 1em 2ch; background: var(--background); color: var(--foreground); border: 1px dashed var(--warning); z-index: 1; font-weight: normal; }
.libre-badge > a:hover + #js-warning, .libre-badge > a:focus-visible + #js-warning { display: block; }
.source-footer { display: flex; flex-direction: column; align-items: flex-end; gap: .5em; text-align: right; margin: 3em 0 1em; font-weight: bold; }
.source-footer::before { content: '________________________________________________________________________________'; display: block; width: 100%; overflow: hidden; white-space: pre; margin-bottom: 1em; font-weight: normal; }
.project-license { color: var(--license); }
.dependency-licenses { color: var(--third-party); }
.license-page h1 { margin: 2em 0 1em; }
.license-table { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font: inherit; }
th, td { padding: .75em 1ch; text-align: left; border-bottom: 1px dashed currentColor; vertical-align: top; }

@media (prefers-color-scheme: dark) {
    :root { --background: #000; --foreground: #fff; --link: #6cf; --logo: #f33; --good: #0f0; --warning: #fc3; --license: #efb366; --third-party: #a3c7a8; --muted: #aaa; }
}

@media (max-width: 600px) {
    .libre-badge { position: relative; width: fit-content; margin: 0 0 2em auto; }
    .logo-art { font-size: clamp(10px, 2.4vw, 16px); }
    .field-heading { font-size: .875em; }
    .panel-body { padding-inline: 2ch; }
    .source-footer { align-items: flex-start; text-align: left; }
    .actions { flex-direction: column; align-items: flex-start; }
}