:root {
  color-scheme: light dark;
  --bg: #f6f4ef;
  --surface: #ffffff;
  --sunken: #ece9e1;
  --text: #1d2420;
  --muted: #5f6a64;
  --line: #d9d5ca;
  --accent: #1f6f5c;
  --accent-text: #ffffff;
  --accent-soft: #d9eee7;
  --accent-soft-text: #14584a;
  --danger: #b3362b;
  --radius: 10px;
  font-family: "Noto Sans Thai", "Leelawadee UI", "Segoe UI", system-ui, sans-serif;
  line-height: 1.55;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816;
    --surface: #1e2421;
    --sunken: #29302c;
    --text: #e9ece9;
    --muted: #a0aaa4;
    --line: #38403b;
    --accent: #54c2a6;
    --accent-text: #0e1f1a;
    --accent-soft: #1c3d34;
    --accent-soft-text: #a4e4d2;
    --danger: #f0897e;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; }
h1, h2, p { margin: 0; }
ul { list-style: none; margin: 0; padding: 0; }
a { color: var(--accent); }
img { max-width: 100%; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}
.stack { display: flex; flex-direction: column; gap: 14px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.hint { color: var(--muted); font-size: 13px; }
.error { color: var(--danger); font-size: 14px; }
.file-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

label { display: flex; flex-direction: column; gap: 5px; font-size: 14px; font-weight: 500; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; }

input:not([type="checkbox"]), select {
  width: 100%; padding: 9px 11px; font: inherit; color: inherit;
  background: var(--surface); border: 1px solid var(--line); border-radius: 8px;
}
input[type="checkbox"] { width: 17px; height: 17px; accent-color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

progress { accent-color: var(--accent); height: 7px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 8px 14px; font: inherit; font-size: 14px; font-weight: 500; line-height: 1.3;
  color: var(--text); text-decoration: none; cursor: pointer;
  background: var(--sunken); border: 1px solid transparent; border-radius: 8px;
}
.btn:hover { border-color: var(--line); }
.btn.primary { background: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .6; cursor: default; }
.danger-text { color: var(--danger); }

.brand { display: flex; align-items: center; gap: 9px; font-size: 18px; font-weight: 700; }
.brand-mark { width: 22px; height: 22px; background: url("/favicon.svg") center / contain no-repeat; }

/* Sign in */
.auth {
  min-height: 100vh; max-width: 900px; margin: 0 auto; padding: 32px 20px;
  display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: center;
}
.auth h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.25; margin: 22px 0; }
.pitch-list { display: flex; flex-direction: column; gap: 10px; color: var(--muted); }
.pitch-list li { padding-left: 20px; position: relative; }
.pitch-list li::before {
  content: ""; position: absolute; left: 0; top: .6em;
  width: 8px; height: 8px; border-radius: 2px; background: var(--accent);
}
.auth-form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.tabs { display: flex; gap: 4px; background: var(--sunken); padding: 4px; border-radius: 8px; }
.tabs button {
  flex: 1; padding: 7px; font: inherit; font-size: 14px; color: var(--muted);
  background: none; border: 0; border-radius: 6px; cursor: pointer;
}
.tabs button[aria-selected="true"] { background: var(--surface); color: var(--text); font-weight: 600; }

/* App */
.topbar {
  display: flex; align-items: center; gap: 12px 24px; flex-wrap: wrap;
  padding: 12px 20px; background: var(--surface); border-bottom: 1px solid var(--line);
}
.usage { display: flex; align-items: center; gap: 10px; margin-left: auto; font-size: 13px; color: var(--muted); }
.usage progress { width: 110px; }
.account { display: flex; align-items: center; gap: 6px; font-size: 14px; }

.content { max-width: 1120px; margin: 0 auto; padding: 24px 20px 60px; }

.dropzone {
  display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center;
  padding: 44px 16px; font-weight: 400; cursor: pointer;
  background: var(--surface); border: 2px dashed var(--line); border-radius: var(--radius);
  transition: background .15s, border-color .15s;
}
.dropzone strong { font-size: 18px; }
.dropzone span { color: var(--muted); font-size: 14px; }
.dropzone:hover, .dropzone.active { border-color: var(--accent); background: var(--accent-soft); }
.dropzone:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }

.upload-options { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 14px; }
.upload-options label:first-child { flex-direction: row; align-items: center; gap: 8px; font-weight: 400; }
.upload-options select { width: auto; padding: 6px 9px; }

.queue { display: flex; flex-direction: column; gap: 6px; margin-top: 14px; }
.queue-row {
  display: grid; grid-template-columns: minmax(0, 1fr) 140px auto; align-items: center; gap: 14px;
  padding: 8px 12px; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; font-size: 14px;
}
.queue-row progress { width: 100%; }
.queue-row.failed { grid-template-columns: minmax(0, 1fr) auto; }
.queue-row.failed .muted { color: var(--danger); }

.section-title { font-size: 17px; margin: 32px 0 14px; }
.empty { padding: 36px 0; text-align: center; color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.card { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.thumb {
  display: flex; align-items: center; justify-content: center; aspect-ratio: 4 / 3;
  padding: 0; background: var(--sunken); border: 0; cursor: pointer; width: 100%;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.file-ext { font-size: 22px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }
.card-body { display: flex; flex-direction: column; gap: 4px; padding: 12px; flex: 1; }
.badges { display: flex; flex-wrap: wrap; gap: 5px; min-height: 22px; margin-top: 2px; }
.badge { padding: 1px 8px; font-size: 12px; color: var(--muted); background: var(--sunken); border-radius: 99px; }
.badge.shared { color: var(--accent-soft-text); background: var(--accent-soft); }
.card-actions { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 8px; }
.card-actions .btn { padding: 6px 10px; font-size: 13px; }

/* Share dialog */
.dialog {
  width: min(600px, calc(100vw - 32px)); max-height: calc(100vh - 32px); padding: 20px;
  color: var(--text); background: var(--surface); border: 1px solid var(--line); border-radius: 12px;
}
.dialog::backdrop { background: rgb(0 0 0 / .5); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; }
.dialog-head h2 { font-size: 18px; }
.dialog > .file-name { margin: 2px 0 14px; }
.switch { margin-bottom: 16px; }
.link-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 6px; }
.link-label { grid-column: 1 / -1; font-size: 13px; font-weight: 500; }
.link-row input { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.inline-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 8px; padding-top: 14px; border-top: 1px solid var(--line); }
.inline-form label { flex: 1 1 200px; }
.error { margin-top: 2px; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 10;
  max-width: calc(100vw - 32px); padding: 9px 16px; font-size: 14px;
  color: var(--bg); background: var(--text); border-radius: 8px;
}

/* Public share page */
.share-body { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px 16px; }
.share-card {
  display: flex; flex-direction: column; gap: 12px; align-items: center; text-align: center;
  width: fit-content; min-width: min(380px, 100%); max-width: min(960px, 100%);
  padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
}
.share-card h1 { font-size: 20px; }
.share-card form { width: 100%; text-align: left; }
.share-image { height: auto; max-height: 72vh; width: auto; border-radius: 6px; }
.share-name { max-width: 100%; overflow-wrap: anywhere; }
.share-file { font-size: 56px; }
.share-foot { margin-top: 8px; font-size: 13px; color: var(--muted); }

@media (max-width: 680px) {
  .auth { grid-template-columns: 1fr; gap: 28px; min-height: 0; }
  .usage { order: 3; margin-left: 0; width: 100%; }
  .usage progress { flex: 1; }
  .account { margin-left: auto; }
  .queue-row { grid-template-columns: minmax(0, 1fr) auto; }
  .queue-row progress { grid-column: 1 / -1; grid-row: 2; }
}