#keychain-gen-app {
  --bg: #1e2126;
  --panel: #2a2e35;
  --panel-border: #3a3f47;
  --text: #e8e8ea;
  --muted: #9aa0a8;
  --accent: #d1a054;
  --accent-hover: #e0b46a;
  --danger: #e0666a;
}

#keychain-gen-app, #keychain-gen-app * { box-sizing: border-box; }

#keychain-gen-app .hidden { display: none !important; }

#keychain-gen-app #mobile-notice { display: none; }

#keychain-gen-app {
  min-height: 500px;
  margin: 20px 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  direction: rtl;
  display: flex;
  flex-direction: column;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--panel-border);
}

#keychain-gen-app header {
  flex: 0 0 auto;
  padding: 18px 28px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--bg);
}

#keychain-gen-app header h1 {
  margin: 0;
  font-size: 1.4rem;
  color: var(--text);
  line-height: 1.3;
}

#keychain-gen-app header p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

#keychain-gen-app main {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  gap: 20px;
  padding: 20px;
  align-items: stretch;
}

#keychain-gen-app .panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  padding: 18px 20px;
  min-height: 0;
}

#keychain-gen-app #form-panel {
  flex: 0 0 460px;
  display: flex;
  flex-direction: column;
}

#keychain-gen-app #form-panel h2 {
  flex: 0 0 auto;
  margin: 0 0 8px;
  font-size: 1.05rem;
  color: var(--accent);
}

#keychain-gen-app #keychain-form {
  display: flex;
  flex-direction: column;
}

#keychain-gen-app #form-scroll-area {
  padding-left: 4px;
  margin-left: -4px;
}

#keychain-gen-app #form-actions {
  flex: 0 0 auto;
  padding-top: 14px;
  margin-top: 10px;
  border-top: 1px solid var(--panel-border);
}

#keychain-gen-app .field {
  margin-bottom: 14px;
}

#keychain-gen-app .field label {
  display: block;
  white-space: nowrap;
  margin-bottom: 5px;
  font-size: 0.88rem;
  color: var(--muted);
}

#keychain-gen-app .field input[type="text"],
#keychain-gen-app .field input[type="number"],
#keychain-gen-app .field input[type="file"],
#keychain-gen-app .field select {
  width: 100%;
  padding: 8px 10px;
  background: #1c1f24;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.95rem;
}

#keychain-gen-app .field input[type="text"],
#keychain-gen-app .field input[type="number"] {
  width: 75px;
}

#keychain-gen-app #size-field,
#keychain-gen-app #letters-extrude-field {
  width: 150px;
}

#keychain-gen-app #size,
#keychain-gen-app #letters-extrude {
  width: 120px;
}

#keychain-gen-app #hole-diameter,
#keychain-gen-app #loop-wall {
  width: 65px;
}

#keychain-gen-app #hole-position {
  width: 110px;
}

#keychain-gen-app .field input[type="text"] {
  font-size: 1.1rem;
}

#keychain-gen-app .value-display {
  width: 100%;
  padding: 8px 10px;
  background: #1c1f24;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.95rem;
}

#keychain-gen-app .row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}

#keychain-gen-app #type-and-source-row {
  align-items: stretch;
}

#keychain-gen-app .row .field {
  flex: 0 0 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

#keychain-gen-app #image-upload-field {
  flex: 1 1 auto;
  width: 100%;
}

#keychain-gen-app #image-upload-field label {
  white-space: normal;
}

/* Shared site-wide "sample file" button style (same look in every app).
   The three color variables are re-declared on the button itself with the
   shared values, so this app's own --accent/--muted stay untouched. */
#keychain-gen-app button.ghost {
  --line: rgba(255, 255, 255, .14);
  --muted: #98a2b3;
  --accent: #dca24a;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  border-radius: 8px;
  padding: 7px 10px;
  font-size: .82rem;
  cursor: pointer;
  width: 100%;
}

#keychain-gen-app button.ghost.accent:not(:disabled) {
  color: var(--accent);
  border-color: var(--accent);
  border-width: 2px;
}

#keychain-gen-app button.ghost.accent:not(:disabled):hover {
  background: rgba(220, 162, 74, .1);
}

#keychain-gen-app .sample-btn { margin-top: 8px; }

#keychain-gen-app #sample-selected {
  display: block;
  margin-top: 6px;
  color: var(--accent);
  font-size: 0.88rem;
}

#keychain-gen-app .path-row {
  display: flex;
  gap: 8px;
}

#keychain-gen-app .path-row input[type="text"] {
  flex: 1;
}

#keychain-gen-app .path-row button#browse-btn {
  flex: 0 0 auto;
  padding: 8px 14px;
  background: #3a3f47;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
  white-space: nowrap;
}

#keychain-gen-app .path-row button#browse-btn:hover { background: #454b55; }
#keychain-gen-app .path-row button#browse-btn:disabled { opacity: 0.6; cursor: default; }

#keychain-gen-app .radio-group {
  display: flex;
  gap: 16px;
}

#keychain-gen-app .radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

#keychain-gen-app .checkbox-field {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

#keychain-gen-app .checkbox-field label {
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

#keychain-gen-app fieldset {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  margin: 0 0 16px;
  padding: 2px 14px 8px;
}

#keychain-gen-app fieldset legend {
  color: var(--accent);
  font-size: 0.85rem;
  line-height: 1.2;
  padding: 2px 9px;
  margin-bottom: 0;
}

#keychain-gen-app fieldset.hidden { display: none; }

#keychain-gen-app button#generate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 11px;
  background: var(--accent);
  border: none;
  border-radius: 8px;
  color: #201a0d;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.15s;
}

#keychain-gen-app .spinner {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0, 0, 0, 0.25);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: keychain-gen-spin 0.7s linear infinite;
}

#keychain-gen-app .spinner-lg {
  width: 38px;
  height: 38px;
  border-width: 4px;
  border-color: rgba(232, 232, 234, 0.25);
  border-top-color: var(--accent);
}

@keyframes keychain-gen-spin {
  to { transform: rotate(360deg); }
}

#keychain-gen-app button#generate-btn:hover { background: var(--accent-hover); }
#keychain-gen-app button#generate-btn:disabled { opacity: 0.6; cursor: default; }

#keychain-gen-app #status {
  margin-top: 10px;
  font-size: 0.88rem;
  min-height: 1.2em;
}

#keychain-gen-app #status.error { color: var(--danger); }
#keychain-gen-app #status.ok { color: #7fd08a; }

#keychain-gen-app #batch-progress-field {
  margin-top: 14px;
  margin-bottom: 0;
}

#keychain-gen-app .progress-bar-track {
  width: 100%;
  height: 10px;
  background: #1c1f24;
  border: 1px solid var(--panel-border);
  border-radius: 6px;
  overflow: hidden;
}

#keychain-gen-app .progress-bar-fill {
  height: 100%;
  width: 0%;
  background: #22c55e;
  transition: width 0.2s ease;
}

#keychain-gen-app #batch-progress-text {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

#keychain-gen-app #viewer-panel {
  flex: 1 1 auto;
  min-width: 400px;
  display: flex;
  flex-direction: column;
}

#keychain-gen-app #viewer-panel h2 {
  flex: 0 0 auto;
  margin-top: 0;
  font-size: 1.05rem;
  color: var(--accent);
}

#keychain-gen-app #viewer-container {
  position: relative;
  width: 100%;
  flex: 1 1 auto;
  min-height: 400px;
  background: #24272d;
  border-radius: 8px;
  overflow: hidden;
}

#keychain-gen-app #viewer-container canvas { display: block; }

#keychain-gen-app #viewer-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.95rem;
  text-align: center;
  padding: 20px;
}

#keychain-gen-app #viewer-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(30, 33, 38, 0.85);
  color: var(--text);
  font-size: 0.95rem;
  text-align: center;
  padding: 20px;
}

#keychain-gen-app #viewer-loading.hidden { display: none; }

#keychain-gen-app #dimensions-info {
  margin-top: 12px;
  padding: 10px 14px;
  background: #1c1f24;
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.6;
}

#keychain-gen-app #dimensions-info.hidden { display: none; }

#keychain-gen-app #save-btn {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 20px;
  width: 100%;
  margin-top: 10px;
  padding: 11px 16px;
  background: #2fa15a;
  color: #ffffff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
}

#keychain-gen-app #save-btn.hidden { display: none; }
#keychain-gen-app #save-btn:hover { background: #37b869; }
#keychain-gen-app #save-btn:disabled { opacity: 0.6; cursor: default; }

#keychain-gen-app #save-btn .save-btn-credits {
  font-weight: 700;
  font-size: 1rem;
}

#keychain-gen-app #save-btn .credit-icon {
  height: 1em;
  width: 1em;
  vertical-align: middle;
  margin: 0 2px;
}

/* Mobile layout - placed last on purpose: several rules above target
   #form-panel/#viewer-panel with the exact same #keychain-gen-app #id
   specificity, so whichever rule comes LAST in the file wins when the
   media condition is met. Keep this block last if you add more panel
   rules above. */
@media (max-width: 768px) {
  #keychain-gen-app main {
    flex-direction: column;
    padding: 12px;
    gap: 12px;
  }

  #keychain-gen-app #form-panel {
    flex: 1 1 auto;
    width: 100%;
    order: 2;
  }

  #keychain-gen-app #viewer-panel {
    flex: 0 0 42vh;
    min-width: 0;
    order: 1;
  }

  #keychain-gen-app #viewer-container {
    min-height: 220px;
  }

  #keychain-gen-app #mobile-notice {
    display: block;
    text-align: center;
    font-weight: 700;
    font-size: 13px;
    background: var(--accent);
    color: #201a0d;
    border-radius: 9px;
    padding: 8px 10px;
    margin-bottom: 12px;
  }
}