:root {
  --bg: #3c3c3c;
  --panel: #464646;
  --line: #646464;
  --text: #faf8eb;
  --muted: #dad8d0;
  --accent: #f0d818;
  --warning: #f0d818;
  --danger: #ffb6a9;
}

.brand, h1, h2, .dropzone strong {
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: -.015em;
}

h1 {
  font-size: clamp(1.5rem, 4.3vw, 3.2rem);
  white-space: nowrap;
  letter-spacing: 0;
}

.brand-symbol, .select-button, .share-input button, .download-button {
  color: #3c3c3c;
}

.dropzone:hover, .dropzone.dragging, .dropzone:focus-visible {
  background: #514d34;
}

.file-glyph {
  background: #5a542f;
}

.share-input input {
  background: #3c3c3c;
}

.keep-open {
  background: #544c2d;
  border-color: #9d8c30;
  color: #faf8eb;
}

.footer-credit {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.footer-credit a, .footer-credit img {
  display: block;
}

.footer-credit img {
  width: 66px;
  height: 37px;
  object-fit: contain;
}

.mode-nav { display: flex; gap: 6px; padding: 5px; background: #464646; border: 1px solid var(--line); border-radius: 11px; margin: 0 0 20px; }
.mode-nav button { flex: 1; border: 0; background: transparent; color: var(--muted); padding: 12px 10px; border-radius: 7px; font: inherit; cursor: pointer; }
.mode-nav button.selected { background: var(--accent); color: #3c3c3c; font-weight: 750; }
.password-setup, .secret-form { display: flex; flex-direction: column; gap: 12px; margin-top: 24px; }
.password-setup label, .secret-form label { font-weight: 700; font-size: .9rem; }
.password-setup label span { font-weight: 400; color: var(--muted); }
.password-setup input, .password-setup textarea, .secret-form input, .secret-form textarea, .secret-form select, #revealed-secret-text { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: #3c3c3c; color: var(--text); padding: 12px; font: inherit; outline-color: var(--accent); }
.password-setup textarea, .secret-form textarea, #revealed-secret-text { resize: vertical; line-height: 1.5; }
.password-setup p, .secret-form p { color: var(--muted); font-size: .85rem; line-height: 1.5; margin: -3px 0 8px; }
.primary-button { border: 0; border-radius: 8px; background: var(--accent); color: #3c3c3c; padding: 14px 18px; font: inherit; font-weight: 750; cursor: pointer; }
.primary-button:disabled { opacity: .65; cursor: wait; }
.secondary-button { border: 1px solid var(--line); border-radius: 8px; background: transparent; color: var(--text); padding: 13px 18px; font: inherit; cursor: pointer; }
.sharing-grid { display: grid; grid-template-columns: 156px minmax(0,1fr); gap: 18px; align-items: center; margin-top: 24px; }
.qr-wrap { width: 156px; height: 156px; border-radius: 8px; background: #fff; padding: 8px; display: grid; place-items: center; color: #3c3c3c; text-align: center; font-size: .8rem; }
.qr-wrap img { width: 100%; height: 100%; image-rendering: pixelated; }
.share-links { min-width: 0; }
.share-box { margin-top: 0; }
.share-box + .share-box { margin-top: 16px; }
.share-input button { min-width: 70px; }
.password-badge { color: var(--accent); font-size: .85rem; margin: 15px 0 0; }
.session-footer { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 25px; border-top: 1px solid var(--line); padding-top: 20px; font-size: .85rem; }
.session-footer button { border: 0; background: none; color: var(--accent); font: inherit; cursor: pointer; text-decoration: underline; }
.restart-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; border-top: 1px solid var(--line); padding-top: 20px; }
.restart-actions p { flex-basis: 100%; margin: 0 0 4px; color: var(--muted); font-size: .9rem; }
.received-message { margin-top: 22px; border-left: 3px solid var(--accent); padding: 5px 0 5px 15px; }
.received-message p { white-space: pre-wrap; overflow-wrap: anywhere; color: var(--text); line-height: 1.5; margin: 7px 0 0; }
.secret-options { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.secret-options>div { display: flex; flex-direction: column; gap: 8px; }
.expiry-row { display: flex; gap: 8px; }
.expiry-row input { min-width: 0; }
.expiry-row select { width: auto; }
.section-intro { text-align: center; color: var(--muted); }
#secret-open-view>.primary-button { display: block; width: 100%; margin: 24px 0 0; }
#revealed-secret { margin-top: 22px; }
#revealed-secret-text { min-height: 190px; }
@media(max-width:600px){.sharing-grid{grid-template-columns:1fr}.qr-wrap{margin:auto}.session-footer{align-items:flex-start;flex-direction:column}.secret-options{grid-template-columns:1fr}.share-input{flex-direction:row}.share-input button{padding:0 12px}}