* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; background: #f7f9fc; margin: 0; padding: 24px 20px; color: #1e293b; }
.container { max-width: 1200px; margin: 0 auto; }
.header { margin-bottom: 28px; }
h1 { font-size: 1.9rem; font-weight: 600; background: linear-gradient(135deg, #f6821f, #f59e0b); background-clip: text; -webkit-background-clip: text; color: transparent; margin: 0; }
.sub { color: #475569; margin-top: 8px; }
.card { background: white; border-radius: 24px; box-shadow: 0 8px 20px rgba(0,0,0,0.03); padding: 1.5rem 1.8rem; margin-bottom: 28px; border: 1px solid #e9eef3; }
.card-title { font-size: 1.35rem; font-weight: 600; margin-bottom: 1.2rem; border-bottom: 2px solid #f1f5f9; padding-bottom: 0.6rem; }
.form-group { margin-bottom: 1.3rem; }
label { font-weight: 500; display: block; margin-bottom: 6px; }
input, textarea, select { width: 100%; padding: 12px 14px; font-size: 0.9rem; border: 1px solid #cbd5e1; border-radius: 16px; font-family: monospace; resize: vertical; }
button { background-color: #f6821f; border: none; color: white; font-weight: 600; padding: 10px 22px; border-radius: 40px; cursor: pointer; transition: 0.2s; }
button:hover { background-color: #e06e0e; transform: translateY(-1px); }
button.secondary { background-color: #334155; }
button:disabled { background-color: #94a3b8; cursor: not-allowed; }
.result-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.result-table th, .result-table td { text-align: left; padding: 12px; border-bottom: 1px solid #eef2f6; word-break: break-word; }
.result-table th { background-color: #f8fafc; }
.url-link { color: #f6821f; text-decoration: none; font-family: monospace; }
.progress { margin-top: 12px; font-size: 0.8rem; color: #4b5563; }
.empty-msg { text-align: center; color: #6c7a91; padding: 20px; background: #f1f5f9; border-radius: 16px; margin-top: 10px; }
.nav-links { display: flex; gap: 12px; justify-content: flex-end; margin-bottom: 20px; flex-wrap: wrap; }
.nav-link { background: #f1f5f9; padding: 6px 14px; border-radius: 30px; text-decoration: none; color: #1e293b; font-size: 0.85rem; transition: all 0.2s; }
.nav-link:hover { background: #e2e8f0; transform: translateY(-1px); }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.5); }
.modal-content { background-color: #fefefe; margin: 5% auto; padding: 20px; border-radius: 12px; width: 90%; max-width: 600px; position: relative; }
.close { color: #aaa; float: right; font-size: 28px; font-weight: bold; cursor: pointer; }
.close:hover { color: black; }
.qr-img { max-width: 100%; height: auto; margin-top: 10px; }