/* Palette of the o2 editor itself: teal headers, pale green-grey panels */
:root {
    --teal: #2F9E93;
    --teal-dark: #268578;
    --teal-darker: #1F6E64;
    --panel: #EDF2F1;
    --panel2: #E4EBEA;
    --panel3: #DCE4E3;
    --border: #B9C6C4;
    --text: #2E3836;
    --muted: #7A8A88;
    --sel: #CFE0F0;
    --sel-border: #9FC2E0;
    --white: #FAFCFC;
}
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #101014;
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 12px;
}
#canvas-wrap { position: absolute; inset: 0 0 34px 0; }
canvas#canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: #000;
    outline: none;
}

/* ---------- shared chrome ---------- */
button.tbtn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    background: var(--teal);
    color: #fff;
    border: 1px solid var(--teal-darker);
    border-radius: 3px;
    padding: 4px 9px;
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    line-height: 1;
}
button.tbtn:hover:not(:disabled) { background: var(--teal-dark); }
button.tbtn:disabled { opacity: 0.45; cursor: default; }
button.tbtn.quiet {
    background: var(--panel);
    color: var(--text);
    border-color: var(--border);
}
button.tbtn.quiet:hover:not(:disabled) { background: var(--panel3); }
button.tbtn svg { width: 13px; height: 13px; flex: none; }
svg.icon { width: 14px; height: 14px; flex: none; display: block; }

/* ---------- bottom bar ---------- */
#bottombar {
    position: absolute;
    left: 0; right: 0; bottom: 0;
    height: 34px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 8px;
    box-sizing: border-box;
    background: var(--panel);
    border-top: 1px solid var(--border);
    z-index: 30;
}
#bottombar .grow { flex: 1; }
#assets-state { color: var(--muted); white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }
#assets-state.dirty { color: #B26B1D; }
#changes-log {
    position: absolute;
    left: 8px;
    bottom: 40px;
    width: 420px;
    max-height: 45vh;
    overflow: auto;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: 0 6px 24px rgba(20,40,38,.25);
    padding: 8px 10px;
    font-size: 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    white-space: pre-wrap;
    display: none;
    z-index: 31;
}

/* ---------- boot overlay ---------- */
#status {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 12px 18px;
    background: rgba(0, 0, 0, 0.55);
    color: #eee;
    border-radius: 6px;
    pointer-events: none;
    z-index: 50;
}
#status.hidden { display: none; }
#progress {
    display: block;
    margin-top: 8px;
    width: 220px;
    height: 4px;
    background: #222;
    border-radius: 2px;
    overflow: hidden;
}
#progress > span {
    display: block;
    height: 100%;
    width: 0%;
    background: var(--teal);
    transition: width 0.2s ease;
}

/* ---------- file browser ---------- */
#browser-back {
    position: absolute;
    inset: 0;
    background: rgba(20, 35, 33, .35);
    display: none;
    z-index: 45;
}
#browser-back.open { display: block; }
#browser {
    position: absolute;
    inset: 4% 4% 44px 4%;
    background: var(--panel2);
    border: 1px solid var(--border);
    border-radius: 5px;
    display: none;
    flex-direction: column;
    z-index: 46;
    box-shadow: 0 14px 48px rgba(15,35,32,.45);
    overflow: hidden;
}
#browser.open { display: flex; }
#browser-title {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--teal);
    color: #fff;
    padding: 5px 10px;
    font-weight: 600;
    user-select: none;
}
#browser-title .grow { flex: 1; }
#browser-title .winbtn {
    background: none; border: none; color: #fff; cursor: pointer;
    padding: 2px; display: flex; border-radius: 3px;
}
#browser-title .winbtn:hover { background: rgba(255,255,255,.18); }
#browser-toolbar {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 8px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}
#browser-body { flex: 1; display: flex; min-height: 0; }

/* tree */
#tree {
    width: 250px;
    min-width: 180px;
    overflow: auto;
    background: var(--white);
    border-right: 1px solid var(--border);
    padding: 4px 0;
    user-select: none;
}
.t-node { }
.t-row {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px 2px 0;
    white-space: nowrap;
    cursor: default;
}
.t-row:hover { background: var(--panel2); }
.t-row.selected { background: var(--sel); outline: 1px solid var(--sel-border); outline-offset: -1px; }
.t-row.drop-target { background: #D6EBD6; outline: 1px dashed var(--teal); outline-offset: -1px; }
.t-row .chev {
    width: 14px; height: 14px; flex: none;
    display: flex; align-items: center; justify-content: center;
    color: var(--muted);
}
.t-row .chev.leaf { visibility: hidden; }
.t-row .chev svg { transition: transform .1s ease; }
.t-row.expanded .chev svg { transform: rotate(90deg); }
.t-row .t-label { overflow: hidden; text-overflow: ellipsis; }
.t-kids { display: none; }
.t-node.expanded > .t-kids { display: block; }
.t-row img.thumb { width: 14px; height: 14px; object-fit: contain; flex: none; }

/* preview / editor pane */
#pane {
    flex: 1;
    min-width: 320px;
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border);
    background: var(--white);
}
#pane-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 8px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    min-height: 26px;
}
#pane-name {
    color: var(--teal-darker);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    display: inline-flex; align-items: center; gap: 6px;
}
#pane-view { flex: 1; min-height: 0; position: relative; overflow: auto; }
#pane-view .placeholder { color: var(--muted); padding: 24px; }
#pane-view .imgbox {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: repeating-conic-gradient(#cfd8d6 0% 25%, #e8eeed 0% 50%) 0 0/22px 22px;
}
#pane-view .imgbox img { max-width: 96%; max-height: 96%; image-rendering: pixelated; }
#monaco-holder { position: absolute; inset: 0; }
#pane-view textarea {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    box-sizing: border-box;
    background: #fff; color: #222;
    border: none; outline: none; resize: none;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 12px; padding: 10px;
}

/* ---------- changes dialog ---------- */
#changes-back {
    position: absolute;
    inset: 0;
    background: rgba(20, 35, 33, .35);
    display: none;
    z-index: 41;
}
#changes-back.open { display: block; }
#changes {
    position: absolute;
    inset: 6% 6% 44px 6%;
    background: var(--panel2);
    border: 1px solid var(--border);
    border-radius: 5px;
    display: none;
    flex-direction: column;
    z-index: 42;
    box-shadow: 0 14px 48px rgba(15,35,32,.45);
    overflow: hidden;
}
#changes.open { display: flex; }
#changes-title {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--teal);
    color: #fff;
    padding: 5px 10px;
    font-weight: 600;
    user-select: none;
}
#changes-title .grow { flex: 1; }
#changes-body { flex: 1; display: flex; min-height: 0; }
#changes-list {
    width: 320px;
    min-width: 220px;
    overflow: auto;
    background: var(--white);
    border-right: 1px solid var(--border);
    padding: 4px 0;
    user-select: none;
}
.ch-row {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 3px 8px;
    white-space: nowrap;
    cursor: default;
    font-size: 12px;
}
.ch-row:hover { background: var(--panel2); }
.ch-row.selected { background: var(--sel); outline: 1px solid var(--sel-border); outline-offset: -1px; }
.ch-row .badge {
    flex: none;
    width: 15px; height: 15px;
    border-radius: 3px;
    color: #fff;
    font-size: 10px;
    font-weight: 700;
    display: flex; align-items: center; justify-content: center;
}
.ch-row .badge.A { background: #3B8E6B; }
.ch-row .badge.M { background: #C88A2B; }
.ch-row .badge.D { background: #B5514A; }
.ch-row .ch-path { overflow: hidden; text-overflow: ellipsis; }
.ch-empty { color: var(--muted); padding: 18px 12px; }
#changes-view { flex: 1; min-width: 0; display: flex; flex-direction: column; background: var(--white); }
#cv-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 10px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    min-height: 26px;
}
#cv-name { color: var(--teal-darker); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#cv-view { flex: 1; min-height: 0; position: relative; overflow: hidden; }
#cv-view .placeholder { color: var(--muted); padding: 24px; }
#cv-diff { position: absolute; inset: 0; }
.cv-imgs { position: absolute; inset: 0; display: flex; }
.cv-side {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
}
.cv-side:last-child { border-right: none; }
.cv-side .cv-cap {
    padding: 4px 8px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
    color: var(--muted);
    font-size: 11px;
}
.cv-side .cv-imgbox {
    flex: 1;
    display: flex; align-items: center; justify-content: center;
    background: repeating-conic-gradient(#cfd8d6 0% 25%, #e8eeed 0% 50%) 0 0/22px 22px;
    overflow: auto;
}
.cv-side .cv-imgbox img { max-width: 96%; max-height: 96%; image-rendering: pixelated; }
.cv-side .cv-missing {
    flex: 1;
    display: flex; align-items: center; justify-content: center;
    color: var(--muted);
    background: var(--panel2);
}

/* ---------- context menu ---------- */
#ctx {
    position: fixed;
    min-width: 180px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    box-shadow: 0 8px 28px rgba(15,35,32,.3);
    padding: 3px;
    display: none;
    z-index: 60;
    user-select: none;
}
#ctx .mi {
    display: flex; align-items: center; gap: 8px;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: default;
    white-space: nowrap;
}
#ctx .mi:hover { background: var(--teal); color: #fff; }
#ctx .mi:hover svg { color: #fff; }
#ctx .mi svg { color: var(--muted); }
#ctx .sep { height: 1px; background: var(--border); margin: 3px 6px; }

/* ---------- modal dialogs ---------- */
#modal-back {
    position: fixed; inset: 0;
    background: rgba(20, 35, 33, .35);
    display: none;
    align-items: center; justify-content: center;
    z-index: 70;
}
#modal-back.open { display: flex; }
#modal {
    width: 380px;
    background: var(--panel2);
    border: 1px solid var(--border);
    border-radius: 5px;
    box-shadow: 0 16px 48px rgba(10,25,22,.5);
    overflow: hidden;
}
#modal-title {
    background: var(--teal);
    color: #fff;
    font-weight: 600;
    padding: 6px 10px;
}
#modal-body { padding: 14px 12px; }
#modal-msg { margin-bottom: 10px; white-space: pre-wrap; }
#modal-input {
    width: 100%;
    box-sizing: border-box;
    background: var(--white);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 6px 8px;
    font-size: 12px;
    outline: none;
}
#modal-input:focus { border-color: var(--teal); }
#modal-buttons {
    display: flex; justify-content: flex-end; gap: 6px;
    padding: 0 12px 12px;
}

/* ---------- AI agent ---------- */
#ai-back {
    display: none; position: fixed; inset: 0;
    background: rgba(20, 45, 42, .45); z-index: 43;
}
#ai-back.open { display: block; }
#ai {
    display: none; position: fixed; z-index: 44;
    left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: min(1280px, 96vw); height: min(940px, 94vh);
    background: var(--panel); border: 1px solid var(--border);
    border-radius: 6px; box-shadow: 0 12px 40px rgba(0,0,0,.35);
    flex-direction: column; overflow: hidden;
}
#ai.open { display: flex; }
#ai-title {
    display: flex; align-items: center; gap: 8px;
    background: var(--teal); color: #fff;
    padding: 6px 10px; font-weight: 600; user-select: none;
}
#ai-title .grow { flex: 1; }
#ai-settings {
    display: flex; align-items: center; gap: 8px;
    padding: 6px 10px; border-bottom: 1px solid var(--border);
    background: var(--panel2);
}
#ai-settings label { color: var(--muted); font-size: 12px; }
#ai-settings input[type=password], #ai-settings input[type=text] {
    border: 1px solid var(--border); border-radius: 3px;
    padding: 3px 6px; font-size: 12px; background: #fff;
}
#ai-key { flex: 1; min-width: 100px; }
#ai-model { width: 160px; }
#ai-settings label:has(input[type=checkbox]) {
    display: inline-flex; align-items: center; gap: 3px;
    cursor: pointer; user-select: none; white-space: nowrap;
}
#ai-chat {
    flex: 1; overflow: auto; padding: 10px;
    background: var(--white);
    display: flex; flex-direction: column; gap: 8px;
}
.ai-m { max-width: 92%; padding: 6px 10px; border-radius: 6px; white-space: pre-wrap; word-break: break-word; font-size: 13px; }
.ai-m.user { align-self: flex-end; background: var(--sel); border: 1px solid var(--sel-border); }
.ai-m.model { align-self: flex-start; background: var(--panel2); border: 1px solid var(--border); }
.ai-m.error { align-self: stretch; background: #FBEAEA; border: 1px solid #D89A9A; color: #8A2A2A; }
/* markdown inside model messages */
.ai-m.model h1, .ai-m.model h2, .ai-m.model h3 { margin: 6px 0 4px; font-size: 14px; }
.ai-m.model h3 { font-size: 13px; }
.ai-m.model p { margin: 4px 0; }
.ai-m.model ul, .ai-m.model ol { margin: 4px 0; padding-left: 20px; }
.ai-m.model li { margin: 1px 0; }
.ai-m.model code {
    font: 12px ui-monospace, Menlo, monospace;
    background: var(--panel3); border-radius: 3px; padding: 0 3px;
}
.ai-m.model pre {
    margin: 5px 0; padding: 6px 8px; overflow-x: auto;
    background: var(--panel3); border: 1px solid var(--border); border-radius: 4px;
}
.ai-m.model pre code { background: none; padding: 0; }
.ai-m.model hr { border: none; border-top: 1px solid var(--border); margin: 6px 0; }
.ai-m a { color: var(--teal-darker); }
.ai-file {
    color: var(--teal-darker); cursor: pointer;
    border-bottom: 1px dashed var(--teal); white-space: nowrap;
}
.ai-file:hover { background: var(--sel); }

/* collapsible debug steps */
.ai-step { align-self: stretch; }
.ai-step-head {
    display: flex; align-items: center; gap: 5px;
    color: var(--muted); cursor: pointer;
    font: 11px ui-monospace, Menlo, monospace;
    padding: 1px 4px; border-radius: 3px;
}
.ai-step-head:hover { background: var(--panel2); color: var(--text); }
.ai-step-head .ai-chev { transition: transform .12s ease; flex: none; }
.ai-step.open .ai-step-head .ai-chev { transform: rotate(90deg); }
.ai-step-head .ai-step-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ai-step-body {
    display: none; margin: 2px 0 4px 16px; padding: 5px 8px;
    background: var(--panel2); border: 1px solid var(--border); border-radius: 4px;
    font: 11px ui-monospace, Menlo, monospace;
    white-space: pre-wrap; word-break: break-word;
    max-height: 320px; overflow: auto;
}
.ai-step.open .ai-step-body { display: block; }
#ai-debug-toggle { margin-left: 4px; }
.ai-shot { align-self: flex-start; max-width: 60%; border: 1px solid var(--border); border-radius: 4px; cursor: zoom-in; }
.ai-shot.big { max-width: 100%; cursor: zoom-out; }
#ai-status { padding: 3px 10px; font-size: 11px; color: var(--muted); border-top: 1px solid var(--border); background: var(--panel2); min-height: 18px; }
#ai-inputrow {
    display: flex; gap: 8px; padding: 8px 10px;
    border-top: 1px solid var(--border); background: var(--panel);
    align-items: flex-end;
}
/* activity indicator on the bottom-bar button while the agent works */
@keyframes ai-spin { to { transform: rotate(360deg); } }
#btn-ai .ai-spinner {
    width: 12px; height: 12px; flex: none; display: none;
    border: 2px solid rgba(255,255,255,.35); border-top-color: #fff;
    border-radius: 50%; animation: ai-spin .8s linear infinite;
}
#btn-ai.busy .ai-spinner { display: block; }
#btn-ai.busy .icon { display: none; }

.ai-step.review .ai-step-head { color: var(--teal-darker); font-weight: 600; }
.ai-step-body.md {
    font-family: inherit; font-size: 12px; line-height: 1.45;
    white-space: normal; color: var(--text);
}
.ai-step-body.md p { margin: 3px 0; }
.ai-step-body.md ul, .ai-step-body.md ol { margin: 3px 0; padding-left: 18px; }
.ai-step-body.md li { margin: 1px 0; }
.ai-step-body.md code { background: var(--panel3); border-radius: 3px; padding: 0 3px; font: 11px ui-monospace, Menlo, monospace; }
.ai-step-body.md h1, .ai-step-body.md h2, .ai-step-body.md h3 { font-size: 13px; margin: 5px 0 3px; }
.ai-step-body.md b { color: var(--teal-darker); }

#ai-input {
    flex: 1; resize: none; min-height: 34px; max-height: 140px;
    border: 1px solid var(--border); border-radius: 4px;
    padding: 6px 8px; font-size: 13px; font-family: inherit;
}