body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: #ffffff;
    margin: 0;
    height: 100vh;
    display: flex;
}
.phone-container { width: 100%; height: 100%; display: flex; flex-direction: column; overflow: hidden; box-sizing: border-box; }
.screen { display: none; flex-direction: column; height: 100%; padding: 30px; box-sizing: border-box; overflow-y: auto; }
.active-screen { display: flex; }
h1 { text-align: center; color: #1a56db; margin-top: 50px; margin-bottom: 40px; font-size: 32px; }
h3 { margin-top: 20px; margin-bottom: 10px; font-size: 18px; color: #333; }
label { font-size: 14px; color: #555; margin-bottom: 5px; }
input[type="text"], input[type="password"] { padding: 12px; margin-bottom: 20px; border: 1px solid #ccc; border-radius: 8px; font-size: 16px; width: 100%; box-sizing: border-box; }
.btn { padding: 15px; border: none; border-radius: 8px; font-size: 16px; font-weight: bold; cursor: pointer; text-align: center; margin-bottom: 15px; width: 100%; box-sizing: border-box; }
.btn-primary { background-color: #1a56db; color: white; }
.btn-secondary { background-color: white; color: #1a56db; border: 2px solid #1a56db; }
.btn-success { background-color: #28a745; color: white; }
.error-msg { color: red; font-size: 14px; text-align: center; margin-bottom: 15px; display: none; }
#main-content { flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.preview-img { max-width: 100%; max-height: 250px; object-fit: contain; border-radius: 12px; margin-bottom: 20px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); display: none; }
#final-image-preview { display: block; margin: 0 auto 20px auto; }
.logout-link { text-align: center; margin-top: 0; color: #888; cursor: pointer; text-decoration: underline; font-size: 14px; padding-bottom: 0; }
.user-display { text-align: center; color: #333; font-size: 14px; font-weight: bold; margin-bottom: 8px; }
.tags-container { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 15px; }
.tag-btn { padding: 8px 16px; border-radius: 20px; font-size: 14px; cursor: pointer; border: 1px solid #ccc; background-color: transparent; color: #999; transition: all 0.2s ease; }
.tag-btn.selected { background-color: #1a56db; color: white; border: 1px solid #1a56db; }
.correction-input { margin-bottom: 0 !important; }