:root { color-scheme: dark; --bg: #2f3137; --fg: #f4f4f6; --muted: #b9bbc2; --accent: #313994; --accent-fg: #fff; --link: #9aa3ff; --line: #5a5c65; --danger: #ff8f8f; --warn: #f5c451; --ok: #7ddc9a; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, sans-serif; }
main { max-width: 28rem; margin: 12vh auto; padding: 0 16px; }
h1 { font-size: 1.5rem; margin: 0 0 1.5rem; }
#upload-fields { margin-top: 1rem; }
textarea { font: inherit; resize: vertical; min-height: 5rem; }
#upload-fields label:not(:first-child) { margin-top: 1rem; }
input[type=file] { padding: .5rem; }
input[type=file]::file-selector-button { margin-right: .75rem; padding: .35rem .7rem; font: inherit; color: var(--accent-fg); background: var(--accent); border: 1px solid #4a54c4; border-radius: 4px; cursor: pointer; }
.logo { display: block; width: 20rem; max-width: 100%; height: auto; }
label { display: block; font-weight: 600; margin-bottom: .25rem; }
input, textarea { width: 100%; box-sizing: border-box; padding: .6rem; font: inherit; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: inherit; }
#passcode { font-family: ui-monospace, monospace; letter-spacing: .08em; }
button, .button { display: inline-block; border: 1px solid #4a54c4; margin-top: 1rem; padding: .6rem 1.1rem; font: inherit; color: var(--accent-fg); background: var(--accent); border-radius: 6px; text-decoration: none; cursor: pointer; }
:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }
button:disabled { opacity: .5; cursor: default; }
pre { padding: .8rem; border: 1px solid var(--line); border-radius: 6px; white-space: pre-wrap; word-break: break-all; }
#file-result h2, .result-title { font-size: 1.15rem; margin: 0 0 .25rem; }
.result-title.ok { color: var(--ok); }
.result-title.warn { color: var(--warn); }
.file-chip { display: inline-block; margin: .25rem 0 0; padding: .45rem .75rem; border: 1px solid var(--line); border-radius: 6px; word-break: break-all; }
.countdown { margin: .9rem 0 .35rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.countdown strong { color: var(--fg); }
.countdown.low, .countdown.low strong { color: var(--warn); }
progress { display: block; width: 100%; height: .4rem; border: 0; border-radius: .2rem; background: var(--line); accent-color: var(--link); overflow: hidden; appearance: none; }
progress::-webkit-progress-bar { background: var(--line); }
progress::-webkit-progress-value { background: var(--link); }
progress::-moz-progress-bar { background: var(--link); }
progress.low::-webkit-progress-value { background: var(--warn); }
progress.low::-moz-progress-bar { background: var(--warn); }
.hint { color: var(--muted); font-size: .9rem; }
.error { color: var(--danger); }