/* ====== Reset & Base ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #f1f5f9;
    color: #1e293b;
    font-family: "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
    line-height: 1.6;
    padding-bottom: 40px;   /* 左右留白交给 .container，导航栏才能贴边 */
}

html, body {
    height: 100%;
}

/* ====== Container ====== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-narrow {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ====== Typography ====== */
h1 {
    text-align: center;
    color: #0f172a;
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 32px;
    letter-spacing: 2px;
}

h1.small {
    font-size: 24px;
}

/* ====== Buttons ====== */
.btn-group {
    display: flex;
    gap: 12px;
    margin-top: 28px;
}

.btn-group.center {
    justify-content: center;
}

.btn {
    flex: 1;
    padding: 13px 16px;
    border: 1px solid #000000;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    font-family: inherit;
    background-color: #ffffff;
    color: #000000;
}

.btn:hover {
    background-color: #eeeeee;
}

.btn-primary {
    background-color: #000000;
    color: #ffffff;
    border-color: #000000;
}

.btn-primary:hover {
    background-color: #333333;
    border-color: #333333;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
    border: 1px solid #000000;
    background: #ffffff;
    color: #475569;
    cursor: pointer;
    font-family: inherit;
    text-decoration: none;
    display: inline-block;
}

.btn-sm:hover { background: #f1f5f9; }
.btn-sm.danger { color: #dc2626; border-color: #fecaca; }
.btn-sm.danger:hover { background: #fef2f2; }

/* ====== Cards ====== */
.card {
    background-color: #ffffff;
    border: 1px solid #000000;
    padding: 40px 32px;
    margin-bottom: 24px;
    text-align: center;
}

/* ====== Footer ====== */
.footer {
    text-align: center;
    color: #94a3b8;
    font-size: 12px;
    margin-top: 40px;
}
.footer a {
    color: #000000;
    text-decoration: none;
}
.footer a:hover { text-decoration: underline; }

/* ====== Error message ====== */
.error-msg {
    background-color: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 12px 16px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

/* ====== Notes / Disclaimer ====== */
.note, .disclaimer {
    font-size: 13px;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 16px;
    padding: 12px 16px;
    background-color: #f8fafc;
    border-left: 3px solid #94a3b8;
}

/* ====== Forms ====== */
.form-card {
    background: #ffffff;
    border: 1px solid #000000;
    padding: 32px;
    margin-bottom: 24px;
}

.form-title {
    font-size: 17px;
    color: #0f172a;
    margin-bottom: 24px;
    font-weight: 600;
}

.form-row {
    display: flex;
    gap: 20px;
}

.form-group {
    margin-bottom: 20px;
    flex: 1;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #475569;
    margin-bottom: 6px;
    font-weight: 600;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #000000;
    background: #ffffff;
    color: #0f172a;
    font-size: 15px;
    font-family: inherit;
    outline: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: #000000;
}

.hidden {
    display: none !important;
}

/* ====== Admin ====== */
.admin-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 28px;
}

.admin-head h1 {
    margin: 0;
    text-align: left;
}

.admin-stats {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.stat {
    background: #ffffff;
    border: 1px solid #000000;
    padding: 12px 22px;
    font-size: 14px;
    color: #475569;
}

.stat b {
    color: #0f172a;
    font-size: 16px;
    font-variant-numeric: tabular-nums;
}
.stat.in b { color: #0284c7; }
.stat.out b { color: #dc2626; }
.stat.balance b { color: #059669; }

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 18px;
}

.tabs {
    display: flex;
}

.tabs button {
    padding: 9px 22px;
    border: 1px solid #000000;
    background: #ffffff;
    color: #475569;
    cursor: pointer;
    font-size: 14px;
    font-family: inherit;
}

.tabs button + button { border-left: none; }
.tabs button.active {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.table-wrap {
    overflow-x: auto;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
}

.admin-table th,
.admin-table td {
    padding: 12px 14px;
    border-bottom: 1px solid #e2e8f0;
    font-size: 14px;
    text-align: left;
    white-space: nowrap;
}

.admin-table th {
    background: #f8fafc;
    color: #475569;
    font-weight: 600;
}

.admin-table tbody tr:hover td {
    background: #f8fafc;
}

.pager {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.pager button {
    padding: 7px 14px;
    border: 1px solid #000000;
    background: #ffffff;
    cursor: pointer;
    font-size: 14px;
    font-family: inherit;
}

.pager button.active {
    background: #000000;
    color: #ffffff;
    border-color: #000000;
}

.empty {
    text-align: center;
    color: #94a3b8;
    padding: 24px;
    font-size: 13px;
}

/* 操作结果提示 */
#msg {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: none;
    z-index: 100;
    max-width: 90vw;
}

/* ====== Responsive ====== */
@media (max-width: 600px) {
    body { padding-bottom: 20px; }
    .container, .container-narrow { padding: 0 12px; }
    .form-row { flex-direction: column; gap: 0; }
    .admin-head { flex-direction: column; align-items: flex-start; }
    .card, .form-card { padding: 20px 16px; }
}