html,
body {
    font-family: 'Noto Sans JP', system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
}

:root {
    --header-bg: #2f363b;
    --header-fg: #ffffff;
    --sidebar-bg: #f6f7f9;
    --sidebar-border: #e2e6ea;
    --menu-fg: #2b3137;
    --menu-fg-muted: #cbd5e1;
    --menu-hover: #def5e7;
    --accent: #239954;
    --sidebar-width: 270px;
    --header-height: 50px;
}

.app-header {
    background: var(--header-bg);
    color: var(--header-fg);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 .75rem;
    margin: 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.form-control::placeholder {
    color: #b0b0b0;
    opacity: 1;
}

.brand-area {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    display: flex;
    align-items: center;
    margin: 0;
}

.brand-logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
    object-position: left center;
    display: block;
}

.user-area {
    padding-left: 12px;
    display: flex;
    align-items: center;
    height: 100%;
}

.user-chip {
    color: #cfd6dc;
    font-size: .92rem;
    white-space: nowrap;
}

.user-chip i {
    color: #239954;
}

.header-actions {
    margin-left: 12px;
}

.app-body {
    display: flex;
    height: calc(100dvh - var(--header-height));
    overflow: hidden;
    background: #fff;
    margin: 0;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border);
    padding: 1px .70rem 1rem;
    margin: 0;
    height: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
    box-shadow: 2px 0 5px rgba(0, 0, 0, 0.1);
}

.content {
    flex: 1;
    padding: 0 1.25rem 1.25rem;
    margin: 0;
    height: 100%;
    overflow: auto;
    -webkit-overflow-scrolling: touch;
}

.card {
    box-shadow: 0 0 12px rgba(0, 0, 0, 0.25);
}

.sidebar>*:first-child,
.content>*:first-child {
    margin-top: 0 !important;
}

.section-head {
    font-weight: 700;
    color: #e5e7eb;
    background: #374151;
    border: 1px solid #2d3748;
    border-radius: .35rem;
    padding: .45rem .6rem;
    margin: .30rem 0 .55rem;
    font-size: .9rem;
}

.cat-block {
    margin-bottom: .35rem;
}

.cat-head {
    background: #2f363b;
    border: 1px solid #2d3748;
    border-radius: .35rem .35rem 0 0;
    padding: .45rem .6rem;
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: #f9fafb;
    font-size: .92rem;
    font-weight: 500;
    cursor: pointer;
}

.cat-head:hover {
    background: #4b5563;
}

.cat-head .title {
    display: flex;
    align-items: center;
    gap: .45rem;
}

.cat-head .title i {
    color: #d1d5db;
}

.cat-head .caret {
    color: #239954;
}

.menu-list {
    background: #fff;
    border: 1px solid var(--sidebar-border);
    border-top: none;
    border-radius: 0 0 .35rem .35rem;
    padding: .15rem 0;
    margin: 0;
}

.sidebar a,
.sidebar a:visited {
    color: var(--menu-fg);
    text-decoration: none !important;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: .50rem;
    padding: .38rem .55rem;
    font-size: .88rem;
    line-height: 1.25;
    margin: 0;
}

.menu-item i {
    color: var(--accent);
    font-size: 1rem;
}

.menu-item:hover {
    background: var(--menu-hover);
}

.card,
.card-header,
.card-body {
    margin: 0;
    border-radius: .35rem;
}

.card .card-header {
    background: #2f363b !important;
    color: #fff !important;
}

.card-header {
    border-bottom: 2px solid #239954;
}

.card-header h5 {
    margin: 0;
    padding: 0.25rem 0;
    font-size: 1rem;
    line-height: 1.2;
}

.card-header .btn {
    padding-top: 0.1rem;
    padding-bottom: 0.1rem;
    line-height: 1.2;
}

.sidebar .collapse {
    margin-top: .18rem;
}

.btn.btn-secondary {
    border-radius: .35rem;
}

.card-title>i:first-child {
    color: #239954;
}

h6.custom-header {
    background-color: #343a40;
    color: white;
    padding: 10px;
}

.custom-section {
    background: #343a40;
    color: #fff;
    padding: .5rem .75rem;
    margin: 0 0 .5rem 0;
    border-radius: .25rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    border-left: 4px solid #239954;
}