/* ============ 基础 ============ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    color: #1f2937;
    background: #f3f4f6;
    -webkit-text-size-adjust: 100%;
}
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; font-size: 16px; }

/* ============ 手机端 ============ */
.app {
    max-width: 640px;
    margin: 0 auto;
    min-height: 100vh;
    background: #fff;
    padding-bottom: 40px;
}
.tabs {
    display: flex;
    position: sticky;
    top: 0;
    z-index: 10;
    background: #1f56b3;
}
.tab {
    flex: 1;
    padding: 14px;
    border: none;
    background: transparent;
    color: #cdddf7;
    font-size: 16px;
    font-weight: 500;
    transition: background .2s, color .2s;
}
.tab.active {
    color: #fff;
    background: rgba(255, 255, 255, .12);
    box-shadow: inset 0 -3px 0 #ffd54f;
}
.panel { display: none; padding: 18px 16px; }
.panel.active { display: block; }

.field { margin-bottom: 14px; }
.field label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: #374151;
    font-weight: 500;
}
.req { color: #dc2626; }
.field input, .field textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: #fff;
    color: #111827;
    transition: border-color .15s;
}
.field input:focus, .field textarea:focus {
    outline: none;
    border-color: #1f56b3;
    box-shadow: 0 0 0 3px rgba(31, 86, 179, .12);
}
.scan-row { display: flex; gap: 8px; }
.scan-row input { flex: 1; }
.btn-scan {
    flex: 0 0 auto;
    padding: 0 18px;
    border: none;
    background: #1f56b3;
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
}
.btn-scan:active { background: #18459a; }

.btn-primary {
    width: 100%;
    padding: 13px;
    border: none;
    background: #1f56b3;
    color: #fff;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    margin-top: 4px;
}
.btn-primary:active { background: #18459a; }
.btn-primary:disabled { background: #9aa3b2; }

.msg {
    margin-top: 12px;
    font-size: 14px;
    min-height: 20px;
    padding: 10px;
    border-radius: 6px;
    display: none;
}
.msg.show { display: block; }
.msg.ok { background: #e7f6ec; color: #1a7f37; border: 1px solid #b7e2c5; }
.msg.err { background: #fdecec; color: #c62828; border: 1px solid #f5b5b5; }

.footer {
    text-align: center;
    padding: 18px;
    font-size: 13px;
    color: #6b7280;
}
.footer a { color: #1f56b3; text-decoration: none; }

/* ============ 扫码遮罩 ============ */
.scanner-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(0, 0, 0, .85);
}
.scanner-overlay.show { display: block; }
.scanner-box {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
}
.scanner-head {
    padding: 14px 16px;
    color: #fff;
    font-size: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, .4);
}
#scanner-close {
    border: none;
    background: transparent;
    color: #fff;
    font-size: 28px;
    line-height: 1;
    padding: 0 6px;
}
#scanner-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
}
#scanner-viewport video, #scanner-viewport canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
}
.scanner-foot {
    padding: 12px;
    background: rgba(0, 0, 0, .5);
}
.scanner-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.btn-file {
    display: block;
    text-align: center;
    padding: 10px;
    background: #1f56b3;
    color: #fff;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
}
.btn-file input[type=file] {
    position: absolute;
    width: 1px; height: 1px;
    opacity: 0;
    overflow: hidden;
}
#scanner-manual {
    width: 100%;
    padding: 10px;
    border: 1px solid #444;
    border-radius: 6px;
    background: #fff;
}

/* ============ 查询结果 ============ */
.result-area { margin-top: 12px; }
.result-card {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 10px;
    background: #f9fafb;
}
.result-card .row {
    display: flex;
    margin-bottom: 8px;
    font-size: 14px;
}
.result-card .row:last-child { margin-bottom: 0; }
.result-card .k {
    flex: 0 0 80px;
    color: #6b7280;
}
.result-card .v { flex: 1; color: #111827; word-break: break-all; }
.result-card .title {
    font-weight: 600;
    font-size: 16px;
    color: #1f56b3;
    margin-bottom: 8px;
}
.result-empty {
    text-align: center;
    color: #9ca3af;
    padding: 30px 0;
    font-size: 14px;
}
.mode-switch {
    display: flex;
    gap: 8px;
    margin: 10px 0;
}
.mode-switch button {
    flex: 1;
    padding: 8px;
    border: 1px solid #d1d5db;
    background: #fff;
    border-radius: 6px;
    font-size: 14px;
    color: #374151;
}
.mode-switch button.active {
    background: #1f56b3;
    color: #fff;
    border-color: #1f56b3;
}

/* ============ 后台登录 ============ */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1f56b3 0%, #3b82f6 100%);
}
.login-card {
    width: 320px;
    background: #fff;
    padding: 28px 24px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, .15);
}
.login-card h1 {
    margin: 0 0 18px;
    font-size: 20px;
    color: #1f56b3;
    text-align: center;
}
.login-card .btn-primary { margin-top: 12px; }
.login-hint {
    text-align: center;
    margin: 14px 0 0;
    font-size: 13px;
}
.login-hint a { color: #1f56b3; text-decoration: none; }

.alert { padding: 10px; border-radius: 6px; margin-bottom: 14px; font-size: 14px; }
.alert-error { background: #fdecec; color: #c62828; border: 1px solid #f5b5b5; }

/* ============ 后台管理 ============ */
.admin-body { background: #f3f4f6; }
.admin-header {
    background: #1f2937;
    color: #fff;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.admin-title { font-size: 17px; font-weight: 600; }
.admin-nav { display: flex; gap: 16px; align-items: center; font-size: 14px; }
.admin-nav a { color: #fbbf24; text-decoration: none; }
.admin-nav a:hover { text-decoration: underline; }
.admin-main {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 16px;
}
.search-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}
.search-bar input {
    flex: 1;
    min-width: 200px;
    padding: 9px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
}
.search-bar .btn-primary {
    width: auto;
    padding: 9px 22px;
}
.btn-link {
    align-self: center;
    padding: 9px 14px;
    color: #1f56b3;
    text-decoration: none;
    font-size: 14px;
}
.table-wrap {
    background: #fff;
    border-radius: 8px;
    overflow-x: auto;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .06);
}
.records-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}
.records-table th, .records-table td {
    padding: 10px 12px;
    text-align: left;
    border-bottom: 1px solid #f0f1f3;
    font-size: 14px;
}
.records-table th {
    background: #f9fafb;
    color: #374151;
    font-weight: 600;
    white-space: nowrap;
}
.records-table tbody tr:hover { background: #f9fafb; }
.records-table .empty { text-align: center; color: #9ca3af; padding: 30px; }
.records-table .mono { font-family: Consolas, "Courier New", monospace; white-space: nowrap; }
.records-table .remark { max-width: 220px; white-space: pre-wrap; word-break: break-all; }

.pagination {
    margin-top: 16px;
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
}
.pagination a {
    padding: 6px 14px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    text-decoration: none;
    color: #1f56b3;
    background: #fff;
}
.pagination a:hover { background: #eef4fb; }
.pagination .page-info { font-size: 14px; color: #4b5563; }