:root {
    --bg: #f4f7fb;
    --surface: rgba(255,255,255,.94);
    --border: #dfe7f1;
    --text: #142033;
    --muted: #6c7a90;
    --primary: #2458d6;
    --primary-dark: #183f9d;
    --success: #149467;
    --danger: #d44747;
    --shadow: 0 18px 45px rgba(31, 56, 89, .10);
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: Tahoma, Arial, sans-serif;
    background: radial-gradient(circle at top right, #e8efff 0, transparent 32%), var(--bg);
    color: var(--text);
}
button, input, textarea { font: inherit; }

.page-shell { width: min(1180px, calc(100% - 28px)); margin: 0 auto; padding: 28px 0 50px; }
.topbar, .panel, .scan-header, .scanner-frame, .result-card {
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    border-radius: 24px;
    padding: 26px;
    margin-bottom: 22px;
}
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(24px, 4vw, 38px); }
h2 { margin-bottom: 0; font-size: 22px; }
p { color: var(--muted); margin-bottom: 0; }
.eyebrow { display: block; color: var(--primary); font-weight: 700; font-size: 13px; margin-bottom: 7px; }
.scan-link, .primary-button, .ghost-button {
    border: 0;
    border-radius: 14px;
    cursor: pointer;
    text-decoration: none;
    transition: .2s ease;
}
.scan-link, .primary-button { background: var(--primary); color: #fff; padding: 13px 18px; }
.scan-link:hover, .primary-button:hover { background: var(--primary-dark); transform: translateY(-1px); }
.ghost-button { background: #eef3ff; color: var(--primary); padding: 10px 14px; }
.ghost-button:disabled { opacity: .45; cursor: not-allowed; }
.admin-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 22px; margin-bottom: 22px; }
.panel { border-radius: 22px; padding: 22px; }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label span { display: block; margin-bottom: 8px; font-weight: 700; font-size: 14px; }
input, textarea {
    width: 100%;
    border: 1px solid var(--border);
    background: #fff;
    border-radius: 13px;
    padding: 13px 14px;
    outline: none;
}
input:focus, textarea:focus { border-color: #9db6f8; box-shadow: 0 0 0 4px rgba(36, 88, 214, .09); }
.full-width { grid-column: 1 / -1; }
.message { margin-top: 14px; border-radius: 12px; padding: 12px 14px; }
.message.success { background: #e9f8f2; color: #0c7651; }
.message.error { background: #fff0f0; color: #aa3030; }
.hidden { display: none !important; }
.empty-state { min-height: 270px; display: grid; place-items: center; text-align: center; color: var(--muted); border: 1px dashed #cfd9e7; border-radius: 18px; padding: 20px; }
.qr-card { min-height: 270px; display: grid; place-items: center; text-align: center; gap: 12px; }
#qrCanvas { padding: 12px; background: #fff; border-radius: 16px; border: 1px solid var(--border); }
.qr-details { display: grid; gap: 5px; }
.qr-details span, .qr-details small { color: var(--muted); }
.table-panel { padding-bottom: 10px; }
.search-input { max-width: 320px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; min-width: 760px; }
th, td { padding: 14px 12px; text-align: right; border-bottom: 1px solid #edf1f6; }
th { color: var(--muted); font-size: 13px; }
.qr-mini-button { border: 0; background: #eef3ff; color: var(--primary); border-radius: 10px; padding: 8px 10px; cursor: pointer; }

.scan-body { min-height: 100vh; background: #101726; color: #fff; }
.scan-shell { width: min(760px, calc(100% - 24px)); margin: 0 auto; padding: 18px 0 30px; }
.scan-header { color: var(--text); border-radius: 20px; padding: 18px; display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-bottom: 16px; }
.scan-header h1 { font-size: 25px; margin-bottom: 0; }
.status-pill { background: #edf2ff; color: var(--primary); border-radius: 999px; padding: 9px 12px; font-size: 13px; }
.scanner-frame { border-radius: 24px; overflow: hidden; background: #000; border-color: rgba(255,255,255,.12); }
#reader { width: 100%; min-height: 360px; background: #000; }
#reader video { object-fit: cover !important; }
.scan-hint { padding: 14px; text-align: center; color: #d9e2f2; background: #182236; }
.result-card { margin-top: 16px; color: var(--text); border-radius: 22px; padding: 22px; text-align: center; }
.result-icon { width: 62px; height: 62px; margin: 0 auto 12px; display: grid; place-items: center; border-radius: 50%; background: #e8f8f2; color: var(--success); font-size: 34px; font-weight: 700; }
.result-card.error .result-icon { background: #fff0f0; color: var(--danger); }
.result-content { display: grid; gap: 10px; margin-top: 18px; text-align: right; }
.result-row { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-bottom: 1px solid #edf1f6; }
.result-row span { color: var(--muted); }

@media (max-width: 820px) {
    .admin-grid { grid-template-columns: 1fr; }
    .topbar { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 580px) {
    .page-shell { width: min(100% - 18px, 1180px); padding-top: 10px; }
    .topbar, .panel { border-radius: 18px; padding: 17px; }
    .form-grid { grid-template-columns: 1fr; }
    .full-width { grid-column: auto; }
    .panel-heading { align-items: flex-start; flex-direction: column; }
    .search-input { max-width: none; }
    .scan-header { align-items: flex-start; flex-direction: column; }
}

@media print {
    body * { visibility: hidden; }
    #qrCard, #qrCard * { visibility: visible; }
    #qrCard { position: absolute; inset: 0; display: grid !important; place-items: center; box-shadow: none; }
}