:root {
    --bg: #f4f6f8;
    --surface: #ffffff;
    --text: #1a1d21;
    --muted: #5c6570;
    --border: #d8dee6;
    --accent: #0b6e4f;
    --accent-hover: #095c42;
    --danger: #b42318;
    --danger-hover: #912018;
    --pending: #b54708;
    --approved: #027a48;
    --rejected: #b42318;
    --sidebar: #12263a;
    --sidebar-text: #d7e0ea;
    --sidebar-active: #ffffff;
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", "Helvetica Neue", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a {
    color: var(--accent);
}

.layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--sidebar);
    color: var(--sidebar-text);
    padding: 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.sidebar-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar-user {
    padding: 0.35rem 0.75rem 0.5rem;
    font-size: 0.85rem;
    color: var(--sidebar-text);
    word-break: break-word;
}

.empty-layout {
    min-height: 100vh;
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.5rem;
    background:
        radial-gradient(circle at top left, rgba(11, 110, 79, 0.18), transparent 40%),
        radial-gradient(circle at bottom right, rgba(18, 38, 58, 0.16), transparent 35%),
        var(--bg);
}

.login-card {
    width: min(100%, 380px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.75rem;
    box-shadow: 0 10px 30px rgba(18, 38, 58, 0.08);
}

.login-card h1 {
    margin-bottom: 0.25rem;
}

.login-card .field {
    margin-bottom: 0.9rem;
}

.login-card input {
    width: 100%;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font: inherit;
}

.login-submit {
    width: 100%;
    margin-top: 0.5rem;
}

.brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    margin-bottom: 1.5rem;
    color: #fff;
}

.nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-link {
    color: var(--sidebar-text);
    text-decoration: none;
    padding: 0.55rem 0.75rem;
    border-radius: 6px;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--sidebar-active);
}

.content {
    padding: 1.5rem 2rem;
}

h1 {
    margin: 0 0 0.5rem;
    font-size: 1.6rem;
}

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

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: end;
    margin: 1.25rem 0;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.field label {
    font-size: 0.8rem;
    color: var(--muted);
}

.field input,
.field select,
.field textarea {
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.45rem 0.6rem;
    font: inherit;
    background: var(--surface);
    min-width: 12rem;
}

.field textarea {
    min-width: 18rem;
    min-height: 4rem;
    resize: vertical;
}

.btn {
    border: none;
    border-radius: 6px;
    padding: 0.5rem 0.9rem;
    font: inherit;
    cursor: pointer;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

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

.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
}

.btn-secondary {
    background: #e8edf2;
    color: var(--text);
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.form-panel {
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
}

.form-panel h2 {
    margin: 0 0 1rem;
    font-size: 1.15rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem 1rem;
}

.form-grid .field input,
.form-grid .field select,
.form-grid .field textarea {
    min-width: 0;
    width: 100%;
}

.field-span {
    grid-column: 1 / -1;
}

@media (max-width: 720px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

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

.table th,
.table td {
    text-align: left;
    padding: 0.7rem 0.85rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.table th {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--muted);
    background: #f8fafc;
}

.table tr {
    cursor: pointer;
}

.table tr:hover td {
    background: #f3f7fb;
}

.table tr.selected td {
    background: #e8f5ef;
}

.badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pending {
    background: #ffefd6;
    color: var(--pending);
}

.badge-approved {
    background: #dcf5e7;
    color: var(--approved);
}

.badge-rejected {
    background: #fde8e6;
    color: var(--rejected);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 1rem;
    align-items: start;
}

.detail {
    padding: 1rem;
}

.detail dl {
    display: grid;
    grid-template-columns: 8rem 1fr;
    gap: 0.4rem 0.75rem;
    margin: 0 0 1rem;
}

.detail dt {
    color: var(--muted);
    font-size: 0.85rem;
}

.detail dd {
    margin: 0;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alert-error {
    background: #fde8e6;
    color: var(--danger);
}

.alert-success {
    background: #dcf5e7;
    color: var(--approved);
}

.empty {
    padding: 1.5rem;
    color: var(--muted);
}

@media (max-width: 960px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

    .sidebar {
        padding-bottom: 0.75rem;
    }

    .nav {
        flex-direction: row;
        flex-wrap: wrap;
    }
}