body {
  font-family: Arial, sans-serif;
  max-width: 800px;
  margin: 0 auto;
  padding: 20px;
  background: #f5f5f5;
}

.container {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
  font-size: 0.9em;
  color: #666;
  line-height: 1.6;
  background: transparent;
}

footer .link {
  color: #007cba;
  text-decoration: none;
}

footer .link:hover {
  text-decoration: underline;
}

.footer-note {
  margin-top: 10px;
  font-size: 0.9em;
  color: #666;
}

textarea {
  width: 100%;
  height: 150px;
  margin: 10px 0;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: monospace;
  box-sizing: border-box;
}

button {
  background: #007cba;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

button:hover { background: #005a8b; }
button:disabled { background: #ccc; cursor: not-allowed; }

.url-display {
  background: #e8f4f8;
  padding: 15px;
  border-radius: 4px;
  margin: 15px 0;
  word-break: break-all;
  font-family: monospace;
}

.warning {
  background: #fff3cd;
  border: 1px solid #ffeaa7;
  color: #856404;
  padding: 15px;
  border-radius: 4px;
  margin: 15px 0;
}

.error {
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
  padding: 15px;
  border-radius: 4px;
  margin: 15px 0;
}

.success {
  background: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  padding: 15px;
  border-radius: 4px;
  margin: 15px 0;
}

.modal {
  position: fixed;
  z-index: 1000;
  left: 0; top: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content {
  background: white;
  padding: 20px;
  border-radius: 6px;
  width: 320px;
  text-align: center;
}

.modal-buttons {
  margin-top: 15px;
  display: flex;
  justify-content: space-around;
}

.modal-buttons button {
  width: 110px;
}

#passwordRetryMessage {
  font-size: 0.9em;
  color: red;
  min-height: 1.2em;
  margin-top: 10px;
}

#passwordMinLengthNotice {
  font-size: 0.9em;
  color: #555;
  margin-top: 6px;
}

.pw-strength-wrap {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.pw-strength-wrap progress {
  width: 100%;
  height: 10px;
}

.pw-strength-label {
  min-width: 82px;
  font-size: 12px;
  font-weight: bold;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  text-align: left;
}

.pw-strength-label.weak      { color: #ef4444; }
.pw-strength-label.fair      { color: #f59e0b; }
.pw-strength-label.good      { color: #eab308; }
.pw-strength-label.strong    { color: #22c55e; }
.pw-strength-label.excellent { color: #14b8a6; }

.password-field {
  position: relative;
  display: block;
  width: 100%;
}

.password-field input {
  width: 100%;
  padding-right: 44px;
  box-sizing: border-box;
}

.password-toggle {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  opacity: 0.8;
  padding: 0;
  color: #333;
}

.password-toggle:hover { opacity: 1; }
.password-toggle.on { opacity: 1; }

.subtext {
  font-size: 0.9em;
  color: #555;
  margin-top: 6px;
  text-align: center;
}

.file-attach {
  margin-top: 1em;
}

.file-attach input[type="file"] {
  margin-top: 0.5em;
}

#fileUploadProgress {
  display: block;
  width: 100%;
  height: 10px;
  margin-top: 0.4em;
}

#fileStatus {
  color: #555;
  margin-top: 0.3em;
  font-size: 0.9em;
}

.file-download {
  margin-top: 1.5em;
}

.file-download .file-name {
  font-weight: 600;
  color: #333;
  margin-bottom: 0.5em;
}

#downloadProgress {
  display: block;
  width: 100%;
  height: 10px;
  margin-bottom: 0.5em;
}

.hidden {
  display: none !important;
}

.note-content {
  white-space: pre-wrap;
}

.top-controls {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.file-attach {
  flex: 1;
  min-width: 220px;
}

.expiry-control {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  flex: 0 0 auto;
}

.expiry-control select {
  margin-top: 4px;
  padding: 6px 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  background: #fff;
  font-size: 14px;
}

.controls {
  text-align: center;
  margin-top: 15px;
}

@media (max-width: 600px) {
  .top-controls {
    flex-direction: column;
    align-items: stretch;
  }
  .expiry-control {
    align-items: flex-start;
  }
}

.url-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.url-row a {
  flex: 1;
  min-width: 220px;
}

#copyLinkBtn {
  padding: 10px 14px;
  font-size: 14px;
}

#resetBtn {
  display: block;
  margin: 15px auto 0 auto;
}

.logo-top {
  display: block;
  height: 64px;
  width: auto;
  margin: 0 0 10px 0;
}