:root{--bg:#f5f7fb;--panel:#ffffff;--line:#dfe7f3;--text:#1b2430;--muted:#5f6b7a;--primary:#1f5eff;--primary-dark:#1849c7;--danger:#cc3344;--success:#0a8f55;--shadow:0 12px 30px rgba(18,38,63,.08);--radius:18px}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Arial,sans-serif;background:linear-gradient(180deg,#f8fbff 0%,#f3f6fb 100%);color:var(--text)}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1180px,calc(100% - 32px));margin:32px auto}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.header{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:22px 24px;margin-bottom:24px}
.brand{font-size:24px;font-weight:800;letter-spacing:-.02em}
.subtle{color:var(--muted);font-size:14px}
.grid{display:grid;grid-template-columns:380px 1fr;gap:24px}
.panel{padding:24px}
label{display:block;font-weight:700;font-size:14px;margin-bottom:8px}
input[type=text],input[type=password],input[type=url]{width:100%;padding:14px 16px;border:1px solid #cfd9e7;border-radius:14px;background:#fff;font-size:15px;outline:none}
input[type=text]:focus,input[type=password]:focus,input[type=url]:focus{border-color:#98b5ff;box-shadow:0 0 0 4px rgba(31,94,255,.12)}
button,.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 18px;border:none;border-radius:14px;background:var(--primary);color:#fff;font-weight:700;font-size:15px;cursor:pointer;transition:.15s ease}
button:hover,.btn:hover{background:var(--primary-dark);text-decoration:none}
.btn-secondary{background:#eef3fb;color:#15315b}
.btn-secondary:hover{background:#e1ebf9}
.btn-danger{background:#fff0f2;color:#a91b36}
.btn-danger:hover{background:#ffe4e8}
.stack{display:grid;gap:16px}
.flash{padding:14px 16px;border-radius:14px;margin-bottom:16px;font-size:14px}
.flash.success{background:#ecfff5;border:1px solid #bfe8d0;color:#12653f}
.flash.error{background:#fff3f5;border:1px solid #efcad1;color:#8f2236}
.flash.info{background:#f1f6ff;border:1px solid #cfe0ff;color:#25467d}
.customer-list{display:grid;gap:16px}
.customer-item{padding:18px;border:1px solid var(--line);border-radius:16px;background:#fbfdff}
.customer-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.customer-name{font-size:18px;font-weight:800}
.meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:10px;color:var(--muted);font-size:13px}
.badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#eef4ff;color:#234ea5;font-weight:700;font-size:12px}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:14px 12px;border-bottom:1px solid #edf1f7;text-align:left;font-size:14px;vertical-align:top}
.table th{font-size:13px;color:var(--muted);font-weight:800}
.small{font-size:12px;color:var(--muted)}
.empty{padding:24px;border:1px dashed #cad6e8;border-radius:16px;color:var(--muted);text-align:center}
.login-wrap{width:min(460px,calc(100% - 32px));margin:64px auto}
.hero{padding:32px}
.upload-drop{border:2px dashed #c8d7ef;border-radius:18px;padding:26px;background:#fbfdff}
.upload-drop input[type=file]{width:100%;padding:16px;background:#fff;border:1px solid #dce7f5;border-radius:14px}
.top-actions{display:flex;gap:10px;flex-wrap:wrap}
.copybox{padding:12px 14px;background:#f6f9ff;border:1px solid #d9e5fb;border-radius:14px;word-break:break-all;font-size:14px}
.customer-summary{list-style:none;cursor:pointer}
.customer-summary::-webkit-details-marker{display:none}
.customer-summary::marker{display:none}
.customer-body{margin-top:16px}
.collapse-hint{font-size:12px;color:var(--muted);font-weight:700;white-space:nowrap;padding-top:4px}
details.customer-item[open] .collapse-hint::after{content:' ▲'}
details.customer-item:not([open]) .collapse-hint::after{content:' ▼'}
@media (max-width:980px){.grid{grid-template-columns:1fr}.header{align-items:flex-start;flex-direction:column}}