* {
    box-sizing: border-box;
}

:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #1f2937;
    --muted: #64748b;
    --border: #d8dee6;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #15803d;
    --warning: #b45309;
    --soft-blue: #eff6ff;
    --soft-green: #ecfdf5;
    --soft-red: #fef2f2;
    --soft-yellow: #fffbeb;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

header {
    background: #111827;
    color: #fff;
    padding: 14px 20px;
}

.header-inner {
    max-width: 1180px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

nav a {
    color: #e5e7eb;
    padding: 6px 8px;
    border-radius: 6px;
}

nav a:hover,
nav a.active {
    background: #374151;
    text-decoration: none;
}

main {
    max-width: 1180px;
    margin: 22px auto;
    padding: 0 16px 40px;
}

.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px;
    margin-bottom: 18px;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.card h1,
.card h2,
.card h3 {
    margin-top: 0;
}

.grid {
    display: grid;
    gap: 16px;
}

.grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 850px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-inner {
        align-items: flex-start;
        flex-direction: column;
    }
}

.stat {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px;
}

.stat-label {
    color: var(--muted);
    font-size: 0.9rem;
    margin-bottom: 6px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

.positive {
    color: var(--success);
}

.negative {
    color: var(--danger);
}

.warning {
    color: var(--warning);
}

.notice {
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
}

.notice.success {
    background: var(--soft-green);
    border-color: #bbf7d0;
}

.notice.error {
    background: var(--soft-red);
    border-color: #fecaca;
}

.notice.info {
    background: var(--soft-blue);
    border-color: #bfdbfe;
}

form {
    margin: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-bottom: 12px;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 14px;
    margin-bottom: 12px;
}

.form-row-4 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 14px;
    margin-bottom: 12px;
}

@media (max-width: 750px) {
    .form-row,
    .form-row-3,
    .form-row-4 {
        grid-template-columns: 1fr;
    }
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 5px;
    font-size: 0.92rem;
}

input[type="text"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: #fff;
    color: var(--text);
}

textarea {
    min-height: 75px;
    resize: vertical;
}

button,
.btn {
    display: inline-block;
    border: 0;
    background: var(--primary);
    color: white;
    padding: 9px 13px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    line-height: 1.2;
}

button:hover,
.btn:hover {
    background: var(--primary-dark);
    color: white;
    text-decoration: none;
}

.btn-secondary {
    background: #475569;
}

.btn-secondary:hover {
    background: #334155;
}

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

.btn-danger:hover {
    background: #b91c1c;
}

.btn-small {
    padding: 6px 9px;
    font-size: 0.85rem;
}

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

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

th,
td {
    border-bottom: 1px solid var(--border);
    padding: 9px 8px;
    text-align: left;
    vertical-align: top;
}

th {
    background: #f8fafc;
    color: #334155;
    font-size: 0.9rem;
}

td.num,
th.num {
    text-align: right;
    white-space: nowrap;
}

.group-row {
    background: #eef2ff;
    font-weight: 700;
}

.subtle {
    color: var(--muted);
    font-size: 0.92rem;
}

.inline {
    display: inline;
}

.inline-form {
    display: inline;
}

.actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.month-picker {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.pill {
    display: inline-block;
    border-radius: 999px;
    padding: 3px 9px;
    background: #e2e8f0;
    color: #334155;
    font-size: 0.82rem;
}

.bar {
    height: 14px;
    background: #e2e8f0;
    border-radius: 999px;
    overflow: hidden;
}

.bar > span {
    display: block;
    height: 100%;
    background: #2563eb;
    border-radius: 999px;
}

.bar-row {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) 2fr 110px;
    gap: 10px;
    align-items: center;
    margin-bottom: 10px;
}

@media (max-width: 700px) {
    .bar-row {
        grid-template-columns: 1fr;
    }
}

.login-box {
    max-width: 480px;
    margin: 60px auto;
}

.footer-note {
    color: var(--muted);
    font-size: 0.86rem;
    margin-top: 18px;
}

.small-input {
    max-width: 140px;
}