/* =====================================================
   OS/2 Warp 3.0 Theme — SignGram
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;700&display=swap');

:root {
  --desk:      #008080;
  --win:       #c0c0c0;
  --win-dark:  #a0a0a0;
  --bw:        #ffffff;
  --bwl:       #dfdfdf;
  --bs:        #808080;
  --bd:        #404040;
  --title1:    #000080;
  --title2:    #1064c8;
  --ttxt:      #ffffff;
  --text:      #000000;
  --ibg:       #ffffff;
  --in1:       #808080;
  --in2:       #b0b0b0;
  --red:       #cc0000;
  --green:     #006400;
  --roalt:     #b8b8b8;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

html, body {
  height: 100%;
  font-family: 'IBM Plex Sans', 'Helvetica Neue', Arial, sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--desk);
  background-image:
    repeating-linear-gradient(45deg, transparent 0, transparent 2px, rgba(0,0,0,.04) 2px, rgba(0,0,0,.04) 4px),
    repeating-linear-gradient(-45deg,transparent 0, transparent 2px, rgba(0,0,0,.04) 2px, rgba(0,0,0,.04) 4px);
  overflow-x: hidden;
}

/* ── WarpCenter ── */
#warp-center {
  position: sticky; top: 0; z-index: 900;
  height: 36px;
  display: flex; align-items: stretch;
  background: linear-gradient(to bottom, #d8d8d8, #c0c0c0);
  border-bottom: 2px solid var(--bd);
  box-shadow: inset 0 1px 0 var(--bw), 0 4px 8px rgba(0,0,0,.35);
  user-select: none;
}
#warp-center .wc-brand {
  display: flex; align-items: center; gap: 6px;
  padding: 0 12px; font-weight: bold; font-size: 14px;
  border-right: 2px solid var(--bd);
  background: linear-gradient(to right, var(--title1), var(--title2));
  color: var(--ttxt); white-space: nowrap;
}
#warp-nav { display: flex; align-items: stretch; flex: 1; }
#warp-nav a {
  display: flex; align-items: center; padding: 0 14px;
  font-size: 13px; border-right: 1px solid var(--bs);
  cursor: pointer; white-space: nowrap; transition: background .1s;
}
#warp-nav a:hover  { background: rgba(0,0,128,.12); }
#warp-nav a.active {
  background: linear-gradient(to bottom, var(--title1), var(--title2));
  color: var(--ttxt); font-weight: bold;
}
#warp-user {
  display: flex; align-items: center; gap: 8px;
  padding: 0 10px; margin-left: auto;
  border-left: 2px solid var(--bd); font-size: 12px;
}
.user-badge {
  background: var(--title1); color: white;
  padding: 1px 6px; font-size: 10px; font-weight: bold;
  border: 1px solid #000040;
}

/* ── Desktop content ── */
#app-content { padding: 16px; min-height: calc(100vh - 36px); }

/* ── OS/2 Window ── */
.os2-window {
  background: var(--win);
  border: 2px solid #000;
  box-shadow: inset 1px 1px 0 var(--bw), inset -1px -1px 0 var(--bs), 4px 4px 0 rgba(0,0,0,.5);
  margin-bottom: 12px;
}
.os2-titlebar {
  background: linear-gradient(to right, var(--title1), var(--title2));
  color: var(--ttxt); padding: 3px 8px; font-weight: bold; font-size: 12px;
  display: flex; align-items: center; justify-content: space-between;
  min-height: 22px; border-bottom: 1px solid #000040;
}
.os2-titlebar.inactive { background: linear-gradient(to right, var(--in1), var(--in2)); }
.os2-titlebar-btns { display: flex; gap: 2px; }
.os2-titlebar-btns span {
  width: 14px; height: 14px; background: var(--win); border: 1px solid #000;
  display: flex; align-items: center; justify-content: center;
  font-size: 9px; color: #000; cursor: pointer;
  box-shadow: inset -1px -1px 0 var(--bd), inset 1px 1px 0 var(--bw);
}
.os2-body       { padding: 12px; }
.os2-body-tight { padding: 8px; }

/* ── Buttons ── */
.btn {
  background: var(--win); color: var(--text);
  border: 1px solid #000; padding: 5px 14px;
  font-family: inherit; font-size: 13px; cursor: pointer;
  box-shadow:
    inset  2px  2px 0 var(--bw),
    inset  1px  1px 0 var(--bwl),
    inset -1px -1px 0 var(--bs),
    inset -2px -2px 0 var(--bd);
  min-width: 80px; min-height: 28px; white-space: nowrap;
}
.btn:hover { background: #cccccc; }
.btn:active {
  box-shadow:
    inset  2px  2px 0 var(--bd),
    inset  1px  1px 0 var(--bs),
    inset -1px -1px 0 var(--bwl),
    inset -2px -2px 0 var(--bw);
  padding: 6px 13px 4px 15px;
}
.btn:focus-visible { outline: 1px dotted #000; outline-offset: -4px; }
.btn-primary { font-weight: bold; }
.btn-danger  { color: var(--red); }
.btn-success { color: var(--green); }
.btn-small   { padding: 2px 8px; min-width: 50px; min-height: 22px; font-size: 11px; }

/* ── Forms ── */
.os2-field         { margin-bottom: 10px; }
.os2-field label   { display: block; font-weight: bold; margin-bottom: 3px; font-size: 12px; }
.os2-input, .os2-select, .os2-textarea {
  background: var(--ibg); color: var(--text); border: none;
  padding: 4px 6px; font-family: inherit; font-size: 13px; width: 100%;
  box-shadow:
    inset  1px  1px 0 var(--bs),  inset  2px  2px 0 var(--bd),
    inset -1px -1px 0 var(--bwl), inset -2px -2px 0 var(--bw);
  outline: none;
}
.os2-input:focus, .os2-select:focus, .os2-textarea:focus {
  box-shadow:
    inset 1px 1px 0 var(--bs), inset 2px 2px 0 var(--bd),
    inset -1px -1px 0 var(--bwl), inset -2px -2px 0 var(--bw),
    0 0 0 2px var(--title1);
}
.os2-textarea { resize: vertical; min-height: 80px; }
.os2-select   { cursor: pointer; }

/* ── Badges ── */
.badge          { display: inline-block; padding: 1px 7px; font-size: 10px; font-weight: bold; border: 1px solid rgba(0,0,0,.4); letter-spacing: .04em; }
.badge-signed   { background: #009000; color: #fff; border-color: #005000; }
.badge-unsigned { background: #c08000; color: #fff; border-color: #804000; }
.badge-admin    { background: var(--title1); color: #fff; border-color: #000040; }
.badge-user     { background: var(--win-dark); color: #000; }

/* ── Tables ── */
.os2-table           { width: 100%; border-collapse: collapse; font-size: 12px; }
.os2-table th        { background: linear-gradient(to bottom, #d0d0d0, #b8b8b8); border: 1px solid var(--bd); padding: 4px 8px; text-align: left; font-weight: bold; white-space: nowrap; }
.os2-table td        { border: 1px solid var(--bs); padding: 4px 8px; background: var(--win); vertical-align: middle; }
.os2-table tr:nth-child(even) td { background: var(--roalt); }
.os2-table tr:hover td { background: #a8c0e8; }

/* ── Panel ── */
.os2-panel       { border: 2px groove var(--bs); padding: 10px; margin-bottom: 10px; background: var(--win); }
.os2-panel-title { font-weight: bold; font-size: 11px; background: var(--win); padding: 0 4px; margin-bottom: 6px; border-bottom: 1px solid var(--bs); padding-bottom: 4px; }
.os2-hr          { border: none; border-top: 1px solid var(--bs); border-bottom: 1px solid var(--bw); margin: 8px 0; }

/* ── Alerts ── */
#alert-container {
  position: fixed; bottom: 16px; right: 16px; z-index: 9999;
  display: flex; flex-direction: column; gap: 6px;
  max-width: 340px; pointer-events: none;
}
.os2-alert {
  display: flex; align-items: flex-start; gap: 8px;
  padding: 8px 12px; border: 2px solid #000; background: var(--win);
  box-shadow: 3px 3px 0 rgba(0,0,0,.5); font-size: 12px;
  pointer-events: auto; animation: slideIn .15s ease;
}
@keyframes slideIn { from { transform: translateX(30px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
.os2-alert.success { border-left: 4px solid var(--green); }
.os2-alert.error   { border-left: 4px solid var(--red); }
.os2-alert.info    { border-left: 4px solid var(--title1); }
.os2-alert-icon    { font-size: 16px; flex-shrink: 0; }
.os2-alert-close   { margin-left: auto; cursor: pointer; font-size: 14px; flex-shrink: 0; }

/* ── Modal ── */
#modal-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,.55); z-index: 8000;
  align-items: center; justify-content: center; padding: 16px;
}
#modal-overlay.open { display: flex; }
#modal-window {
  background: var(--win); border: 2px solid #000;
  box-shadow: inset 1px 1px 0 var(--bw), inset -1px -1px 0 var(--bs), 6px 6px 0 rgba(0,0,0,.5);
  width: 100%; max-width: 520px; max-height: 90vh;
  display: flex; flex-direction: column;
}
#modal-body { padding: 12px; overflow-y: auto; flex: 1; }

/* ── Auth ── */
.auth-wrap { min-height: calc(100vh - 36px); display: flex; align-items: center; justify-content: center; padding: 20px; }
.auth-box  { width: 100%; max-width: 380px; }

/* ── Dashboard ── */
.doc-card {
  background: var(--win); border: 2px solid #000;
  box-shadow: inset 1px 1px 0 var(--bw), inset -1px -1px 0 var(--bs), 2px 2px 0 rgba(0,0,0,.4);
  display: flex; align-items: center; gap: 10px; padding: 8px 10px;
  cursor: pointer; transition: background .1s; margin-bottom: 6px;
}
.doc-card:hover { background: #d0d8f0; }
.doc-icon    { font-size: 28px; flex-shrink: 0; }
.doc-info    { flex: 1; min-width: 0; }
.doc-name    { font-weight: bold; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.doc-meta    { font-size: 11px; color: #444; margin-top: 2px; }
.doc-actions { display: flex; gap: 4px; flex-shrink: 0; }

/* ── Sign view ── */
#sign-layout { display: flex; gap: 12px; align-items: flex-start; }
#sig-panel   { width: 200px; flex-shrink: 0; }
#pdf-wrap    { flex: 1; min-width: 0; }
#pdf-scroll  {
  overflow: auto; background: #606060;
  border: 2px solid var(--bd); box-shadow: inset 1px 1px 4px rgba(0,0,0,.6);
  position: relative; display: flex; justify-content: center; padding: 12px;
}
#pdf-container { position: relative; display: inline-block; box-shadow: 0 0 12px rgba(0,0,0,.8); }
#pdf-canvas    { display: block; max-width: 100%; }
#sig-overlay   { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }
#sig-overlay.placing { pointer-events: auto; cursor: crosshair; }

/* ── Stickers ── */
.sig-sticker { position: absolute; border: 2px dashed var(--title1); cursor: move; min-width: 60px; min-height: 24px; }
.sig-sticker:hover    { border-color: var(--red); }
.sig-sticker img      { display: block; width: 100%; height: 100%; pointer-events: none; user-select: none; }
.sticker-del {
  position: absolute; top: -10px; right: -10px; width: 18px; height: 18px;
  background: var(--red); color: #fff; border: 1px solid #800; cursor: pointer;
  font-size: 12px; display: flex; align-items: center; justify-content: center;
  z-index: 10; box-shadow: 1px 1px 2px rgba(0,0,0,.4);
}
.sticker-resize {
  position: absolute; bottom: -5px; right: -5px; width: 14px; height: 14px;
  background: var(--title1); cursor: se-resize; z-index: 10;
  border: 1px solid #000020; box-shadow: 1px 1px 2px rgba(0,0,0,.4);
}

/* ── Signature draw canvas ── */
#sig-draw-canvas {
  display: block; width: 100%; background: #fff; cursor: crosshair;
  box-shadow: inset 1px 1px 0 var(--bs), inset 2px 2px 0 var(--bd), inset -1px -1px 0 var(--bwl), inset -2px -2px 0 var(--bw);
  touch-action: none;
}

/* ── Saved signature thumbs ── */
.saved-sig-thumb {
  background: #fff; border: 2px solid var(--bs); cursor: pointer; padding: 2px;
  margin-bottom: 4px; display: block; width: 100%;
  box-shadow: inset 1px 1px 0 var(--bd); transition: border-color .1s;
}
.saved-sig-thumb:hover  { border-color: var(--title1); }
.saved-sig-thumb.active { border-color: var(--red); border-style: solid; }
.saved-sig-thumb img    { display: block; width: 100%; height: 40px; object-fit: contain; }
.saved-sig-row          { display: flex; align-items: center; gap: 4px; margin-bottom: 4px; }
.saved-sig-row .saved-sig-thumb { flex: 1; margin-bottom: 0; }

/* ── Page nav ── */
#page-nav { display: flex; align-items: center; gap: 8px; padding: 6px 0; flex-wrap: wrap; }

/* ── Upload drop zone ── */
.drop-zone {
  border: 3px dashed var(--bs); padding: 24px; text-align: center; cursor: pointer;
  background: var(--roalt); transition: background .15s, border-color .15s;
}
.drop-zone:hover, .drop-zone.dragging { background: #b0c8e8; border-color: var(--title1); }
.drop-zone-icon { font-size: 40px; margin-bottom: 8px; }

/* ── Admin tabs ── */
.os2-tabs { display: flex; border-bottom: 2px solid var(--bd); margin-bottom: 0; }
.os2-tab {
  padding: 5px 16px; cursor: pointer; border: 2px solid transparent; border-bottom: none;
  background: var(--roalt); font-size: 12px; margin-right: 2px; margin-bottom: -2px;
  box-shadow: inset 1px 1px 0 var(--bw), inset -1px 0 0 var(--bs);
}
.os2-tab:hover { background: var(--win); }
.os2-tab.active {
  background: var(--win); border: 2px solid var(--bd); border-bottom: 2px solid var(--win);
  font-weight: bold; box-shadow: inset 1px 1px 0 var(--bw);
}
.os2-tab-pane        { display: none; padding-top: 10px; }
.os2-tab-pane.active { display: block; }

/* ── Invite code ── */
.invite-code-box {
  font-family: 'Courier New', monospace; font-size: 18px; font-weight: bold;
  letter-spacing: .15em; padding: 6px 12px; background: var(--ibg);
  border: 2px solid var(--bd); display: inline-block; cursor: pointer;
  box-shadow: inset 1px 1px 0 var(--bs);
}
.invite-code-box:hover { background: #e8f0ff; }

/* ── Utilities ── */
.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-4  { gap: 4px; }  .gap-8  { gap: 8px; }  .gap-12 { gap: 12px; }
.mt-4   { margin-top: 4px; }    .mt-8  { margin-top: 8px; }    .mt-12 { margin-top: 12px; }
.mb-4   { margin-bottom: 4px; } .mb-8  { margin-bottom: 8px; } .mb-12 { margin-bottom: 12px; }
.text-center { text-align: center; }
.text-small  { font-size: 11px; color: #555; }
.text-bold   { font-weight: bold; }
.text-red    { color: var(--red); }
.text-green  { color: var(--green); }
.w-full      { width: 100%; }
.hidden      { display: none !important; }
.ellipsis    { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.loader {
  display: inline-block; width: 16px; height: 16px;
  border: 2px solid var(--bs); border-top-color: var(--title1);
  border-radius: 50%; animation: spin .6s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ── */
@media (max-width: 700px) {
  #app-content { padding: 8px; }
  #warp-center .wc-brand span { display: none; }
  #warp-nav a  { padding: 0 8px; font-size: 12px; }
  #sign-layout { flex-direction: column; }
  #sig-panel   { width: 100%; }
  .doc-card    { flex-wrap: wrap; }
  .doc-actions { width: 100%; justify-content: flex-end; }
  .os2-table   { font-size: 11px; }
  .os2-table th, .os2-table td { padding: 3px 5px; }
}
@media (max-width: 400px) {
  #warp-nav a { padding: 0 6px; font-size: 11px; }
  .btn { padding: 5px 10px; min-width: 60px; }
}