@font-face { font-family: 'Sarabun'; src: url(vendor/sarabun-400.woff2) format('woff2'); font-weight: 400; font-display: swap; }
@font-face { font-family: 'Sarabun'; src: url(vendor/sarabun-700.woff2) format('woff2'); font-weight: 700; font-display: swap; }

:root {
  --bg: #f4f2ee; --panel: #ffffff; --ink: #1d1d1b; --muted: #6b6a66; --line: #e2dfd8;
  --accent: #1f6f5c; --accent-ink: #ffffff; --accent-soft: #e3f0eb;
  --word: #2b579a; --excel: #217346; --ppt: #c43e1c; --other: #6b6a66;
  --danger: #b3261e; --shadow: 0 1px 2px rgba(0,0,0,.06), 0 4px 14px rgba(0,0,0,.05);
  --font: 'Sarabun', system-ui, -apple-system, 'Segoe UI', 'Noto Sans Thai', 'Leelawadee UI', sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1b1c1b; --panel: #262725; --ink: #ecebe7; --muted: #a3a19b; --line: #3a3b38;
    --accent: #4fb596; --accent-ink: #0f1f1a; --accent-soft: #23362f; --shadow: none; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.6; }
button, input, textarea, select { font: inherit; color: inherit; }
a { color: var(--accent); }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: var(--panel); border-radius: 10px;
  padding: 7px 13px; cursor: pointer; white-space: nowrap; min-height: 38px; }
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 700; }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.danger { color: var(--danger); }
.btn:disabled { opacity: .5; cursor: default; }
.btn.small { padding: 4px 10px; min-height: 32px; font-size: 14px; }

/* login */
.login { max-width: 360px; margin: 18vh auto 0; padding: 28px 22px; background: var(--panel); border-radius: 18px; box-shadow: var(--shadow); text-align: center; }
.login h1 { margin: 6px 0 4px; font-size: 26px; }
.login p { color: var(--muted); margin: 0 0 18px; }
.login input { width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); font-size: 18px; text-align: center; }
.login .btn { width: 100%; justify-content: center; margin-top: 12px; min-height: 46px; }
.err { color: var(--danger); min-height: 1.5em; margin-top: 8px; font-size: 14px; }

/* top bar */
.top { position: sticky; top: 0; z-index: 20; background: var(--bg); border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 10px; padding: 10px 16px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 20px; display: flex; align-items: center; gap: 8px; margin-right: auto; }
.brand .logo { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); display: grid; place-items: center; color: #fff; font-size: 16px; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 16px; }

/* library */
.aibox { background: var(--panel); border-radius: 16px; box-shadow: var(--shadow); padding: 14px; margin-bottom: 16px; border: 1px solid var(--line); }
.aibox h2 { margin: 0 0 8px; font-size: 17px; }
.aibox textarea { width: 100%; min-height: 64px; border: 1px solid var(--line); border-radius: 12px; padding: 10px 12px; background: var(--bg); resize: vertical; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
.chip { border: 1px solid var(--line); background: var(--panel); border-radius: 999px; padding: 4px 12px; font-size: 14px; cursor: pointer; }
.chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.search { flex: 1; min-width: 160px; padding: 8px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; margin-top: 12px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px; display: flex; gap: 12px; align-items: flex-start; cursor: pointer; position: relative; min-width: 0; }
.card:hover { border-color: var(--muted); }
.ficon { flex: none; width: 42px; height: 50px; border-radius: 6px; display: grid; place-items: center; color: #fff; font-weight: 700; font-size: 18px; font-family: system-ui, sans-serif; }
.ficon.word { background: var(--word); } .ficon.excel { background: var(--excel); } .ficon.powerpoint { background: var(--ppt); } .ficon.other { background: var(--other); }
.card .meta { min-width: 0; flex: 1; }
.card .name { font-weight: 700; overflow-wrap: anywhere; line-height: 1.35; }
.card .sub { color: var(--muted); font-size: 13px; }
.card .more { position: absolute; top: 6px; right: 6px; }
.empty { text-align: center; color: var(--muted); padding: 50px 10px; border: 2px dashed var(--line); border-radius: 16px; margin-top: 12px; }
.drop { outline: 3px dashed var(--accent); outline-offset: -8px; }
.menu { position: absolute; z-index: 50; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.18); padding: 6px; min-width: 190px; }
.menu button { display: flex; width: 100%; gap: 8px; border: 0; background: none; padding: 9px 12px; border-radius: 8px; cursor: pointer; text-align: left; }
.menu button:hover { background: var(--bg); }

/* file view */
.ftop .title { font-weight: 700; font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 46vw; cursor: text; }
.ftop .lead { display: flex; align-items: center; gap: 8px; margin-right: auto; min-width: 0; }
.ftop .ficon { width: 28px; height: 32px; font-size: 13px; border-radius: 4px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: var(--panel); }
.seg button { border: 0; background: none; padding: 6px 14px; cursor: pointer; min-height: 36px; }
.seg button.on { background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.layout { display: flex; min-height: calc(100vh - 62px); }
.main { flex: 1; min-width: 0; padding: 14px; overflow: auto; }
.side { width: 360px; flex: none; border-left: 1px solid var(--line); background: var(--panel); display: flex; flex-direction: column; max-height: calc(100vh - 62px); position: sticky; top: 62px; }
.side.hidden { display: none; }
.side .head { padding: 12px 14px; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; font-weight: 700; }
.side .body { padding: 12px 14px; overflow: auto; flex: 1; }
.side textarea { width: 100%; min-height: 80px; border: 1px solid var(--line); border-radius: 12px; padding: 10px; background: var(--bg); resize: vertical; }
.notice { background: #fff4d6; color: #5c4400; border-radius: 10px; padding: 8px 12px; font-size: 14px; margin-bottom: 10px; }
@media (prefers-color-scheme: dark) { .notice { background: #3a3220; color: #f0dca8; } }
.toolbar { display: flex; gap: 4px; flex-wrap: wrap; position: sticky; top: 0; z-index: 5; background: var(--bg); padding: 4px 0 8px; }
.toolbar .btn { min-height: 34px; padding: 4px 10px; }
.toolbar .sep { width: 1px; background: var(--line); margin: 4px 4px; }

.page { background: #fff; color: #111; max-width: 860px; margin: 0 auto; padding: 56px 64px; min-height: 70vh; box-shadow: 0 2px 12px rgba(0,0,0,.12); border-radius: 4px; outline: none; font-family: 'TH Sarabun New', 'Sarabun', var(--font); font-size: 18px; }
.page table { border-collapse: collapse; width: 100%; margin: 8px 0; }
.page td, .page th { border: 1px solid #999; padding: 4px 8px; vertical-align: top; }
.page img { max-width: 100%; height: auto; }
.page h1 { font-size: 30px; } .page h2 { font-size: 25px; } .page h3 { font-size: 21px; }
@media (max-width: 700px) { .page { padding: 24px 18px; } }

.docview { overflow-x: auto; }
.docview .docx-wrapper { background: transparent !important; padding: 0 !important; }
.docview .docx-wrapper > section.docx { box-shadow: 0 2px 12px rgba(0,0,0,.12); margin-bottom: 16px !important; }
.pptview { max-width: 980px; margin: 0 auto; }
.pptview .slide-wrapper, .pptview > div { margin: 0 auto; }
.mediaview { text-align: center; } .mediaview img { max-width: 100%; } .mediaview iframe { width: 100%; height: 80vh; border: 0; background: #fff; }
.mediaview pre { text-align: left; white-space: pre-wrap; background: var(--panel); padding: 16px; border-radius: 12px; }

/* sheets */
.sheetwrap { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.sheettabs { display: flex; gap: 2px; padding: 6px; border-top: 1px solid var(--line); overflow-x: auto; background: var(--bg); }
.sheettabs button { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 4px 12px; cursor: pointer; white-space: nowrap; }
.sheettabs button.on { border-color: var(--excel); color: var(--excel); font-weight: 700; }
@media (prefers-color-scheme: dark) { .sheettabs button.on { color: #7fd1a3; border-color: #7fd1a3; } }
.jexcel_container { width: 100%; }
.jexcel_content { max-width: 100%; }
.jexcel, .jexcel td, .jexcel thead td { font-family: var(--font) !important; font-size: 14px; }
.jexcel > tbody > tr > td { color: #111; background-color: #fff; }

/* slides editor */
.slide-ed { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 12px; margin-bottom: 12px; }
.slide-ed .sh { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.slide-ed .num { font-weight: 700; background: var(--ppt); color: #fff; border-radius: 8px; padding: 0 10px; }
.slide-ed .lay { color: var(--muted); font-size: 13px; margin-right: auto; }
.slide-ed label { display: block; font-size: 13px; color: var(--muted); margin-top: 8px; }
.slide-ed textarea { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; background: var(--bg); resize: vertical; min-height: 44px; }
.slide-ed .tbl { overflow-x: auto; } .slide-ed .tbl table { border-collapse: collapse; }
.slide-ed .tbl input { border: 1px solid var(--line); padding: 4px 6px; min-width: 110px; background: var(--bg); }
.slide-ed.new { border-style: dashed; }

/* AI jobs */
.job { border: 1px solid var(--line); border-radius: 12px; padding: 10px; margin-top: 10px; font-size: 14px; background: var(--bg); }
.job .q { font-weight: 700; margin-bottom: 4px; overflow-wrap: anywhere; }
.job .log { color: var(--muted); font-size: 12.5px; max-height: 120px; overflow: auto; white-space: pre-wrap; overflow-wrap: anywhere; }
.job .res { white-space: pre-wrap; margin-top: 6px; overflow-wrap: anywhere; }
.job .st { font-size: 12.5px; color: var(--muted); }
.spin { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: sp 1s linear infinite; vertical-align: -1px; }
@keyframes sp { to { transform: rotate(360deg); } }

/* versions */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 60; display: grid; place-items: center; padding: 16px; }
.modal { background: var(--panel); border-radius: 16px; width: 100%; max-width: 520px; max-height: 80vh; overflow: auto; padding: 16px; }
.modal h3 { margin: 0 0 10px; }
.ver { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.ver .vt { flex: 1; min-width: 160px; } .ver .vt small { color: var(--muted); display: block; }

#toast { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 99; display: flex; flex-direction: column; gap: 6px; align-items: center; pointer-events: none; }
#toast div { background: #222; color: #fff; padding: 9px 16px; border-radius: 10px; box-shadow: 0 6px 20px rgba(0,0,0,.25); max-width: 90vw; }
#toast div.bad { background: var(--danger); }

.dirty-dot { width: 9px; height: 9px; border-radius: 50%; background: #e8a33d; display: inline-block; }
.fab { display: none; }

@media (max-width: 860px) {
  .side { position: fixed; left: 0; right: 0; bottom: 0; top: auto; width: auto; max-height: 75vh; border-left: 0; border-top: 1px solid var(--line);
    border-radius: 18px 18px 0 0; box-shadow: 0 -8px 30px rgba(0,0,0,.2); z-index: 40; }
  .ftop .title { max-width: 40vw; }
  .ftop .hide-m { display: none; }
  .main { padding: 10px 10px 90px; }
  .fab { display: inline-flex; position: fixed; right: 16px; bottom: 18px; z-index: 30; border-radius: 999px; min-height: 50px; padding: 0 20px; box-shadow: 0 6px 20px rgba(0,0,0,.25); }
}

/* pptx-preview ล็อกกล่องสูงเท่า 1 สไลด์ → ปลดให้เห็นทุกสไลด์เรียงลงมา */
.pptview .pptx-preview-wrapper { height: auto !important; overflow: visible !important; background: transparent !important; counter-reset: sl; }
.pptview .pptx-preview-slide-wrapper { margin: 0 auto 28px !important; box-shadow: 0 2px 12px rgba(0,0,0,.15); position: relative; overflow: visible !important; counter-increment: sl; }
.pptview .pptx-preview-slide-wrapper::after { content: "สไลด์ " counter(sl); position: absolute; left: 0; bottom: -22px; font-size: 13px; color: var(--muted); }