:root {
    --color-primary: #10233f;
    --color-primary-dark: #09182d;
    --color-accent: #1c5d99;
    --color-bg: #f4f7fb;
    --color-surface: #fff;
    --color-border: #dce4ee;
    --color-text: #1f2937;
    --color-muted: #667085;
    --color-success: #167b4b;
    --color-warning: #a15c00;
    --color-danger: #b42318;
    --shadow: 0 10px 28px rgba(16, 35, 63, .08)
}

body {
    background: var(--color-bg);
    color: var(--color-text)
}

.app-shell {
    display: flex;
    min-height: 100vh
}

.sidebar {
    width: 270px;
    flex: 0 0 270px;
    background: linear-gradient(180deg, var(--color-primary), var(--color-primary-dark));
    color: #e9f0f8;
    padding: 18px 14px;
    box-sizing: border-box;
    transition: width .2s, flex-basis .2s;
    box-shadow: 4px 0 18px rgba(9, 24, 45, .12)
}

.sidebar-head {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    border-bottom: 1px solid rgba(255, 255, 255, .16);
    padding: 2px 4px 18px;
    margin-bottom: 12px
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
    flex: 1;
    color: #fff;
    text-decoration: none
}

.brand-logo {
    max-width: 150px;
    max-height: 45px;
    object-fit: contain;
    object-position: left center
}

.brand strong {
    font-size: .78rem;
    letter-spacing: .12em;
    color: #bdd5ec
}

.sidebar-toggle {
    width: 30px;
    height: 30px;
    border: 1px solid rgba(255, 255, 255, .3);
    background: transparent;
    color: #fff;
    border-radius: 7px;
    cursor: pointer;
    font-size: 1.25rem
}

.nav-group {
    padding: 9px 6px;
    margin: 2px 0
}

.nav-group h2 {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: .76rem;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: #a9c1d9;
    margin: 0 0 5px
}

.nav-icon {
    display: inline-grid;
    place-items: center;
    width: 18px;
    color: #78b7ed;
    font-size: .9rem
}

.nav-group a {
    display: block;
    color: #f2f7fc;
    text-decoration: none;
    padding: 7px 9px 7px 27px;
    border-radius: 7px;
    font-size: .9rem
}

.nav-group a:hover {
    background: rgba(255, 255, 255, .11)
}

.app-main {
    min-width: 0;
    flex: 1
}

.topbar {
    height: 64px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 0 32px;
    display: flex;
    justify-content: space-between;
    align-items: center
}

.home-link {
    color: var(--color-accent);
    font-weight: 700;
    text-decoration: none
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 10px
}

.user-label {
    font-size: .7rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--color-muted)
}

.logout-button {
    border: 0;
    background: transparent;
    color: var(--color-accent);
    cursor: pointer;
    font-weight: 600
}

.container {
    max-width: 1280px;
    padding: 28px 32px
}

.sidebar.is-collapsed {
    width: 64px;
    flex-basis: 64px;
    padding: 18px 10px
}

.sidebar.is-collapsed .brand-logo,
.sidebar.is-collapsed .brand strong,
.sidebar.is-collapsed .nav-group h2 span:last-child,
.sidebar.is-collapsed .nav-group a {
    display: none
}

.sidebar.is-collapsed .sidebar-head {
    justify-content: center
}

.sidebar.is-collapsed .brand {
    display: none
}

.sidebar.is-collapsed .nav-group {
    padding: 9px 0;
    text-align: center
}

.sidebar.is-collapsed .nav-group h2 {
    justify-content: center
}

.sidebar.is-collapsed .nav-icon {
    font-size: 1rem
}

.sidebar.is-collapsed .sidebar-toggle {
    transform: rotate(180deg)
}

h1 {
    font-size: 1.7rem;
    color: var(--color-primary);
    letter-spacing: -.02em;
    margin: 0 0 1.25rem;
    padding-bottom: .6rem;
    border-bottom: 2px solid #d8e8f6
}

h2,
.h3,
.h4 {
    color: var(--color-primary);
    margin-top: 1.6rem
}

.detail-grid {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow)
}

.detail-field {
    display: grid;
    grid-template-columns: minmax(180px, 260px) minmax(0, 1fr);
    align-items: center;
    padding: .35rem 0;
    border-bottom: 1px solid #eef2f6
}

.detail-field:nth-last-child(-n+2) {
    border-bottom: 0
}

.detail-field dt {
    color: var(--color-muted);
    font-size: .83rem
}

.detail-field dd {
    margin: 0;
    min-width: 0;
    overflow-wrap: anywhere;
    font-weight: 500
}

@media (max-width: 640px) {
    .detail-field { grid-template-columns: 1fr; gap: .15rem }
}

.related-section {
    margin-top: 1.5rem;
    padding-top: .25rem
}

.login-panel {
    width: min(420px, 100%);
    margin: 9vh auto;
    padding: 34px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: var(--shadow)
}

.login-panel {
    width: min(430px, 100%);
    padding: 36px;
    background: var(--color-surface);
    border-top: 4px solid var(--color-accent);
    box-sizing: border-box
}

.login-brand {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px
}

.login-brand img {
    max-width: 155px;
    max-height: 48px;
    object-fit: contain
}

.login-brand span,
.eyebrow {
    font-size: .72rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--color-muted);
    font-weight: 700
}

.login-panel h1 {
    margin-bottom: .45rem
}

.login-intro {
    margin: 0 0 1.5rem;
    color: var(--color-muted);
    line-height: 1.55
}

.login-form {
    display: grid;
    gap: 18px
}

.login-field {
    display: grid;
    gap: 6px
}

.login-field .form-label {
    font-weight: 700;
    color: var(--color-primary)
}

.login-field .form-control {
    min-height: 42px
}

.login-submit {
    width: 100%;
    padding: .65rem .8rem;
    margin-top: 4px
}

.login-alert {
    background: #fff0f0;
    color: var(--color-danger);
    border: 1px solid #f1c3c3
}

@media(max-width:780px) {
    .app-shell {
        display: block
    }

    .sidebar {
        width: 100%;
        padding: 12px
    }

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

    .sidebar.is-collapsed {
        width: 100%;
        padding: 12px
    }

    .sidebar.is-collapsed .brand {
        display: flex
    }

    .sidebar.is-collapsed .brand-logo,
    .sidebar.is-collapsed .brand strong,
    .sidebar.is-collapsed .nav-group h2 span:last-child,
    .sidebar.is-collapsed .nav-group a {
        display: block
    }

    .sidebar.is-collapsed .nav-group h2 {
        justify-content: flex-start
    }

    .topbar {
        padding: 0 18px
    }

    .container {
        padding: 20px 16px
    }

    .user-label {
        display: none
    }

    .detail-grid {
        grid-template-columns: 1fr
    }
}