* {
box-sizing: border-box;
    margin: 0;
  padding: 0;
}

:root {
      --white: #fff;
  --border: #d3d3d3;
        --blue: #4a90d9;
   --green: #34a853;
 --grey-bg: #f1f1f1;
      --text: #202124;
    --red: #ea4335;
  --yellow: #fbbc05;
}

body {
   background: var(--grey-bg);
        font-family: 'Roboto', sans-serif;
  color: var(--text);
     min-height: 100vh;
display: flex;
    align-items: center;
  justify-content: center;
}

#page-wrap {
display: flex;
      align-items: center;
 justify-content: center;
    width: 100%;
 padding: 20px;
}

#captcha-card {
    background: var(--white);
  border: 1px solid var(--border);
     border-radius: 4px;
 max-width: 400px;
   width: 100%;
      box-shadow: 0 2px 4px rgba(0,0,0,0.1);
 overflow: hidden;
}

#top-bar {
  display: flex;
    align-items: center;
justify-content: space-between;
      padding: 16px 14px 16px 14px;
 border-bottom: 1px solid var(--border);
   background: var(--white);
}

#checkbox-area {
display: flex;
     align-items: center;
  gap: 12px;
}

#main-checkbox {
   width: 24px;
 height: 24px;
      border: 2px solid #c1c1c1;
  border-radius: 2px;
     cursor: pointer;
display: flex;
    align-items: center;
 justify-content: center;
  background: var(--white);
      transition: border-color 0.15s;
 flex-shrink: 0;
}

#main-checkbox:hover {
   border-color: #767676;
}

#main-checkbox.checked {
      border-color: var(--blue);
  background: var(--white);
}

#checkmark {
 color: var(--blue);
    font-size: 16px;
  font-weight: 700;
      line-height: 1;
}

#not-robot-label {
      font-size: 14px;
   color: var(--text);
user-select: none;
}

#recaptcha-logo-area {
  display: flex;
 align-items: center;
    gap: 6px;
}

#recaptcha-logo {
flex-shrink: 0;
}

#logo-text {
display: flex;
      flex-direction: column;
 align-items: flex-end;
}

#logo-main {
 font-size: 10px;
    font-weight: 700;
      color: #555;
   letter-spacing: 0.5px;
}

#logo-sub {
    font-size: 8px;
 color: #999;
     letter-spacing: 0.3px;
}

.spinner {
 width: 16px;
     height: 16px;
   border: 2px solid #ddd;
border-top-color: var(--blue);
    border-radius: 50%;
 animation: spin 0.7s linear infinite;
}

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

#puzzle-area {
 min-height: 80px;
    padding: 16px 14px;
  background: var(--white);
}

#bottom-bar {
display: flex;
      align-items: center;
 justify-content: space-between;
    padding: 8px 14px;
 border-top: 1px solid var(--border);
  background: #fafafa;
}

#google-branding {
 display: flex;
    align-items: center;
gap: 5px;
}

#privacy-link,
#terms-link {
 font-size: 10px;
   color: #999;
    cursor: pointer;
}

#privacy-link:hover,
#terms-link:hover {
  color: var(--blue);
}

#terms-sep {
    font-size: 10px;
 color: #ccc;
}

#level-counter {
 font-size: 11px;
   color: #aaa;
    font-weight: 500;
 letter-spacing: 0.5px;
}

#verify-wrap {
display: flex;
    align-items: center;
 gap: 8px;
    padding: 10px 14px 14px 14px;
 background: var(--white);
   border-top: 1px solid var(--border);
}

#verify-btn {
 flex: 1;
    padding: 8px 0;
 font-family: 'Roboto', sans-serif;
      font-size: 14px;
  font-weight: 500;
 letter-spacing: 0.3px;
    border: 1px solid var(--border);
 border-radius: 4px;
   cursor: not-allowed;
 background: #f5f5f5;
    color: #aaa;
 transition: background 0.2s, color 0.2s, border-color 0.2s;
}

#verify-btn:not([disabled]) {
 background: var(--blue);
   color: var(--white);
    border-color: var(--blue);
 cursor: pointer;
}

#verify-btn:not([disabled]):hover {
    background: #357abd;
 border-color: #357abd;
}

#verify-btn.success {
background: var(--green) !important;
 border-color: var(--green) !important;
    color: var(--white) !important;
}

#audio-btn {
    background: none;
 border: 1px solid var(--border);
  border-radius: 4px;
    padding: 7px 10px;
 font-size: 14px;
    cursor: pointer;
  color: #777;
 transition: color 0.15s, border-color 0.15s;
}

#audio-btn:hover {
 color: var(--blue);
   border-color: var(--blue);
}

#audio-btn.active {
   color: var(--blue);
 border-color: var(--blue);
}

#captcha-card {
opacity: 1;
   transition: opacity 0.3s ease;
}

#captcha-card.fading {
  opacity: 0;
}

#level-complete-msg {
display: none;
    position: fixed;
 top: 50%;
      left: 50%;
 transform: translate(-50%, -60px);
    background: var(--green);
 color: var(--white);
      font-size: 15px;
 font-weight: 500;
   padding: 10px 22px;
 border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
 z-index: 999;
  opacity: 0;
   transition: opacity 0.2s;
}

#level-complete-msg.show {
 opacity: 1;
}

@media (max-width: 440px) {
#captcha-card {
 max-width: 100%;
    border-radius: 0;
 border-left: none;
      border-right: none;
}

    #page-wrap {
 padding: 0;
      align-items: flex-start;
    }

body {
 align-items: flex-start;
}
}