body { font-family: Arial, sans-serif; background: #f7f7f9; margin: 0; }
.container { max-width: 820px; margin: 40px auto; padding: 0 16px; }
.card { background: #fff; border: 1px solid #ddd; border-radius: 16px; padding: 24px; box-shadow: 0 8px 24px rgba(0,0,0,0.04); }
h1 { margin-top: 0; }
label { display: block; margin: 18px 0 8px; font-weight: 700; }
.hint { color: #555; }
.dropzone { position: relative; border: 2px dashed #bfc7d1; border-radius: 14px; padding: 26px; text-align: center; background: #fafbfc; cursor: pointer; }
.dropzone.small { padding: 18px; }
.dropzone.dragover { background: #eef6ff; border-color: #4b91ff; }
.dropzone input[type=file] { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; cursor: pointer; }
.file-list { margin-top: 12px; text-align: left; }
.file-item { padding: 8px 10px; background: #eef2f7; border-radius: 8px; margin-top: 6px; overflow-wrap: anywhere; }
button, .button-link { display: inline-block; margin-top: 20px; padding: 12px 18px; border: 0; border-radius: 10px; background: #1f6feb; color: #fff; text-decoration: none; cursor: pointer; font-weight: 700; }
.msg { background: #fff3cd; padding: 12px; border-radius: 8px; margin-bottom: 16px; }
.progress-wrap { width: 100%; height: 22px; background: #e9edf2; border-radius: 999px; overflow: hidden; margin-top: 20px; }
.progress-bar { height: 100%; width: 0%; background: #1f6feb; transition: width 0.3s ease; }
.progress-text { margin-top: 10px; font-weight: 700; }
.status-box { margin-top: 18px; line-height: 1.8; }
.done-box { margin-top: 22px; padding: 14px; background: #eef9f0; border-radius: 10px; }
.hidden { display: none; }
.back-link { display: inline-block; margin-top: 20px; color: #1f6feb; text-decoration: none; }