:root {
  --page-bg: #0a0c10;
  --content-bg: #0f1115;
  --fg: #e6e8ec;
  --muted: #8b93a3;
  --accent: #6ea8fe;
  --accent-2: #a8d1ff;
  --panel: #171a21;
  --panel-hover: #1c2129;
  --ok: #6fd39a;
  --err: #ff7d7d;
  --border: #262b34;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

/* Author display rules (.session, .recv-download...) beat the UA
   [hidden] rule, so hidden panels stayed visible. */
[hidden] {
  display: none !important;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--fg);
  min-height: 100vh;
  min-height: 100dvh;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px;
  background: var(--content-bg);
  min-height: 100vh;
}

header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  margin-bottom: 32px;
  text-align: center;
}

header > a {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  color: var(--fg);
}

.logo {
  width: clamp(120px, 40vw, 220px);
  height: auto;
  aspect-ratio: 1;
  display: block;
}

header > a h1 {
  font-size: 32px;
  margin: -8px 0 0;
  letter-spacing: -0.02em;
  text-align: center;
  color: var(--fg);
}

.tagline {
  color: var(--muted);
  margin: 0;
  text-align: center;
}

.dropzone {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 64px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.05s;
  outline: none;
}

.dropzone:hover,
.dropzone:focus-visible {
  background: var(--panel-hover);
  border-color: var(--accent);
}

.dropzone.dragover {
  border-color: var(--accent);
  background: var(--panel-hover);
  transform: scale(1.005);
}

.dropzone-icon {
  font-size: 48px;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 16px;
}

.dropzone-msg {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 20px;
}

.pick-btn {
  background: var(--accent);
  color: #0a0d14;
  border: 0;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.1s;
}

.pick-btn:hover {
  background: var(--accent-2);
}

.status {
  margin-top: 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  color: var(--muted);
  font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.recv-status {
  margin-top: 8px;
}

.mode-flip {
  margin-top: 12px;
  display: flex;
  justify-content: center;
}

.recv-download {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.download-link {
  text-decoration: none;
  display: inline-block;
}

.status-row {
  display: inline-flex;
  gap: 6px;
}

.status-label::after {
  content: ":";
}

.status-value.pending {
  color: var(--muted);
}
.status-value.ok {
  color: var(--ok);
}
.status-value.err {
  color: var(--err);
}

.queue {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.queue-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  font-size: 14px;
}

.queue-item .name {
  color: var(--fg);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1 1 auto;
}

.queue-item .size {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  flex: 0 0 auto;
}

.session {
  margin-top: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.session-title {
  font-size: 18px;
  margin: 0;
  font-weight: 600;
}

.session-link-row {
  display: flex;
  gap: 8px;
  align-items: stretch;
}

.session-link {
  flex: 1;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--fg);
  padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  min-width: 0;
}

.session-qr {
  align-self: center;
  background: #ffffff;
  padding: 12px;
  border-radius: 12px;
  line-height: 0;
}

.session-qr:empty {
  display: none;
}

.session-qr svg {
  display: block;
  width: min(220px, 60vw);
  height: auto;
  aspect-ratio: 1;
}

.session-state {
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 14px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.session-state.transferring {
  color: var(--ok);
}

.cancel-btn {
  align-self: flex-start;
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
  transition: color 0.1s, border-color 0.1s;
}

.cancel-btn:hover {
  color: var(--err);
  border-color: var(--err);
}

.cancel-btn.done {
  background: var(--accent);
  color: #0a0d14;
  border-color: var(--accent);
}

.cancel-btn.done:hover {
  background: var(--accent-2);
  color: #0a0d14;
  border-color: var(--accent-2);
}

.debug {
  margin-top: 12px;
  font-size: 11px;
  color: var(--fg-dim, #888);
}
.debug-summary {
  cursor: pointer;
  padding: 4px 0;
  user-select: none;
}
.debug-log {
  margin: 6px 0 0;
  padding: 6px 8px;
  border: 1px solid var(--border, #333);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.25);
  color: var(--fg-dim, #aaa);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  line-height: 1.35;
  max-height: 220px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre;
  word-wrap: normal;
  -webkit-overflow-scrolling: touch;
}


/* F5: zip-store bundle receive dialog. Renders the two-way choice
   between whole-zip download and per-entry extract, followed by
   the extracted download links when the user picks Extract. */
.bundle-dialog {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--border, #333);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.02);
  width: 100%;
}
.bundle-heading {
  margin: 0;
  color: var(--muted, #aaa);
  font-size: 14px;
}
.bundle-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pick-btn.secondary {
  background: transparent;
  color: var(--accent, #6ea);
  border: 1px solid var(--accent, #6ea);
}
.pick-btn.secondary:hover {
  background: var(--accent, #6ea);
  color: #0a0d14;
}
.pick-btn:disabled {
  opacity: 0.5;
  cursor: default;
}
.bundle-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  border: 1px dashed var(--border, #333);
  border-radius: 6px;
  max-height: 260px;
  overflow-y: auto;
}
.bundle-list .download-link {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 13px;
  color: var(--accent-2, var(--accent, #6ea));
  padding: 4px 6px;
  border-radius: 4px;
}
.bundle-list .download-link:hover {
  background: rgba(255, 255, 255, 0.04);
}
.bundle-error {
  margin: 0;
  color: var(--err, #f66);
  font-size: 13px;
}

/* ---- layout additions ---- */

/* Options */
.options {
  margin-top: 24px;
  font-size: 14px;
  color: var(--muted);
}
.options details {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.options-summary {
  cursor: pointer;
  padding: 4px 0;
  user-select: none;
}
.option-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.4;
  cursor: pointer;
}
.option-row input {
  flex: 0 0 auto;
  margin: 3px 0 0;
}
.option-hint {
  color: var(--muted);
  opacity: 0.7;
  font-size: 12px;
}

/* Sender session controls */
.session-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 16px;
  font-size: 13px;
  color: var(--muted);
}
.session-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}
.session-counters {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.peer-progress-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  color: var(--muted);
}
.peer-progress-list:empty {
  display: none;
}
.peer-progress-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-wrap: anywhere;
}

/* Clipboard-detected links */
.fetch-queue {
  margin-top: 24px;
}
.section-title {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px;
}
.fetch-queue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.fetch-queue-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
}

/* Keyboard focus */
.pick-btn:focus-visible,
.cancel-btn:focus-visible,
.session-link:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Narrow screens */
@media (max-width: 520px) {
  main {
    padding: 24px 16px;
  }
  header {
    margin-bottom: 20px;
  }
  .dropzone {
    padding: 40px 16px;
  }
  .session {
    padding: 16px;
  }
  .session-link-row {
    flex-direction: column;
  }
  .session-link-row .pick-btn {
    width: 100%;
  }
  .bundle-actions .pick-btn {
    flex: 1 1 100%;
  }
}