/* 财务收支系统 — 扁平简约 */
:root {
    --bg: #f7f8fa;
    --surface: #ffffff;
    --border: #e8eaed;
    --text: #1d1d1f;
    --text-secondary: #6e6e73;
    --accent: #0066cc;
    --accent-hover: #0052a3;
    --accent-soft: rgba(0, 102, 204, 0.08);
    --danger: #d92d20;
    --danger-soft: #fef3f2;
    --success: #027a48;
    --success-soft: #ecfdf3;
    --radius: 8px;
    --radius-sm: 6px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    -webkit-font-smoothing: antialiased;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.5;
    color: var(--text);
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 顶栏：白底 + 细线，扁平 */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.site-header .inner--header {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.25rem;
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
}

.brand {
    color: var(--text);
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    padding: 0.35rem 0;
}

.brand:hover {
    color: var(--accent);
}

.nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.25rem 0.5rem;
}

.nav__links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.125rem;
}

.nav__links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.4rem 0.65rem;
    border-radius: var(--radius-sm);
    transition: background 0.15s ease, color 0.15s ease;
}

.nav__links a:hover {
    color: var(--text);
    background: var(--bg);
}

.nav__meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 0.5rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--border);
}

.nav__user {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    max-width: 10rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav__role {
    color: var(--accent);
    font-weight: 500;
}

.nav__meta .nav__logout {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding: 0.35rem 0.6rem;
    border-radius: var(--radius-sm);
}

.nav__meta .nav__logout:hover {
    color: var(--danger);
    background: var(--danger-soft);
}

.main {
    flex: 1;
    padding: 1.5rem 0 2.5rem;
}

.main .inner {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

.site-footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 1rem;
    text-align: center;
}

.site-footer small {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

/* 提示条：扁平色块 */
.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
    border: 1px solid transparent;
}

.alert-error {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: #fecdca;
}

.alert-success {
    background: var(--success-soft);
    color: var(--success);
    border-color: #a6f4c5;
}

/* 卡片：无阴影，仅描边 */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.35rem 1.5rem;
    margin-bottom: 1.25rem;
}

.card h2 {
    margin: 0 0 1.125rem;
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
}

.table-wrap {
    overflow-x: auto;
    margin: 0 -0.25rem;
}

table.data {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table.data th,
table.data td {
    padding: 0.65rem 0.75rem;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

table.data th {
    background: var(--bg);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: none;
    letter-spacing: 0;
}

table.data tbody tr:last-child td {
    border-bottom: none;
}

table.data tbody tr:hover td {
    background: rgba(0, 0, 0, 0.02);
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    line-height: 1.3;
}

.badge-income {
    background: var(--accent-soft);
    color: var(--accent);
}

.badge-expense {
    background: #fff7ed;
    color: #c2410c;
}

.amount-expense {
    color: #c2410c;
}

.amount-income {
    color: var(--accent);
}

.badge-pending {
    background: #fffbeb;
    color: #b45309;
}

.badge-approved {
    background: var(--success-soft);
    color: var(--success);
}

.badge-rejected {
    background: var(--danger-soft);
    color: var(--danger);
}

form.stacked label {
    display: block;
    margin: 0.65rem 0 0.35rem;
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text);
}

form.stacked label:first-of-type {
    margin-top: 0;
}

form.stacked input[type="text"],
form.stacked input[type="password"],
form.stacked input[type="number"],
form.stacked input[type="date"],
form.stacked input[type="month"],
form.stacked select,
form.stacked textarea {
    width: 100%;
    max-width: 420px;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font-family: inherit;
    font-size: 0.9375rem;
    color: var(--text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

form.stacked input:hover,
form.stacked select:hover,
form.stacked textarea:hover {
    border-color: #d1d5db;
}

form.stacked input:focus,
form.stacked select:focus,
form.stacked textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

form.stacked textarea {
    min-height: 88px;
    max-width: 100%;
    resize: vertical;
}

.btn {
    display: inline-block;
    margin-top: 0.875rem;
    padding: 0.55rem 1.15rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    line-height: 1.4;
    transition: background 0.15s ease, opacity 0.15s ease;
}

.btn:hover {
    background: var(--accent-hover);
}

.btn:active {
    opacity: 0.92;
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg);
    border-color: #d1d5db;
}

.btn-danger {
    background: var(--danger);
}

.btn-danger:hover {
    background: #b42318;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.8125rem;
    margin-top: 0;
}

/* 登录页 */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background: var(--bg);
}

.login-page::before {
    content: "";
    position: fixed;
    inset: 0;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 48%);
    opacity: 1;
    pointer-events: none;
    z-index: -1;
}

.login-box {
    width: 100%;
    max-width: 400px;
    padding: 2rem 2rem 2.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.login-box h1 {
    margin: 0 0 0.35rem;
    font-size: 1.375rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    text-align: center;
    color: var(--text);
}

.login-box .login-sub {
    margin: 0 0 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.login-box .btn {
    width: 100%;
    margin-top: 1.25rem;
    padding: 0.65rem 1rem;
}

.login-box form.stacked input,
.login-box form.stacked select {
    max-width: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.35rem;
}

.stat-card .num {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

.stat-card .lbl {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 0.35rem;
}

.stat-card--profit .num {
    font-size: 1.65rem;
    letter-spacing: -0.03em;
}

.stat-card--profit-pos .num {
    color: var(--success);
}

.stat-card--profit-neg .num {
    color: var(--danger);
}

.stat-card__sub {
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    line-height: 1.45;
}

.row-actions {
    white-space: nowrap;
}

.row-actions form {
    display: inline;
}

.muted {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 编辑弹窗（dialog） */
.modal-dialog {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0;
    max-width: 440px;
    width: calc(100% - 2rem);
    background: var(--surface);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
}

.modal-dialog::backdrop {
    background: rgba(15, 23, 42, 0.45);
}

.modal-dialog__inner {
    padding: 1.35rem 1.5rem;
}

.modal-dialog__title {
    margin: 0 0 1rem;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.modal-dialog__hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.modal-dialog__actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
    margin-top: 1.1rem;
    padding-top: 0.85rem;
    border-top: 1px solid var(--border);
}

.modal-dialog__actions .btn {
    margin-top: 0;
}

.modal-dialog .stacked input,
.modal-dialog .stacked select {
    max-width: none;
}

/* 折叠详情（员工编辑） */
details summary {
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--accent);
    font-weight: 500;
    user-select: none;
}

details summary:hover {
    text-decoration: underline;
}

details form.stacked {
    margin-top: 0.75rem;
    padding: 1rem 1.1rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}