:root {
    --bg: #f5f7f9;
    --surface: #ffffff;
    --surface-soft: #eef4f2;
    --text: #17212b;
    --muted: #5d6b78;
    --line: #d8e0e6;
    --primary: #116a5c;
    --primary-dark: #0b4f45;
    --accent: #b3374d;
    --warning: #955f00;
    --danger: #b42132;
    --shadow: 0 10px 24px rgba(20, 33, 43, 0.08);
    --radius: 8px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

a:hover {
    text-decoration: underline;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px clamp(16px, 4vw, 44px);
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 4px 18px rgba(23, 33, 43, 0.05);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    min-width: max-content;
}

.brand:hover {
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: var(--primary);
    color: white;
    font-weight: 800;
}

.brand small {
    display: block;
    color: var(--muted);
    font-size: 0.8rem;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
}

.nav a,
.nav-toggle {
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 9px 12px;
    color: var(--text);
    background: transparent;
    font: inherit;
}

.nav a:hover,
.nav a.active {
    background: var(--surface-soft);
    border-color: var(--line);
    text-decoration: none;
}

.nav-toggle {
    display: none;
    cursor: pointer;
}

.page {
    width: min(1180px, calc(100% - 28px));
    margin: 28px auto 56px;
}

.page-narrow {
    width: min(720px, calc(100% - 28px));
}

.hero,
.panel,
.login-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero {
    display: grid;
    grid-template-columns: 1.2fr auto;
    gap: 18px;
    align-items: center;
    padding: clamp(20px, 4vw, 34px);
    margin-bottom: 20px;
}

.hero h1,
.panel h2,
.panel h3 {
    margin: 0;
    line-height: 1.2;
}

.hero p,
.panel p {
    color: var(--muted);
}

.hero p {
    margin: 8px 0 0;
}

.hero-actions,
.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 16px;
}

.span-3 {
    grid-column: span 3;
}

.span-4 {
    grid-column: span 4;
}

.span-6 {
    grid-column: span 6;
}

.span-8 {
    grid-column: span 8;
}

.span-12 {
    grid-column: span 12;
}

.panel {
    padding: 18px;
}

.metric {
    display: grid;
    gap: 6px;
}

.metric strong {
    font-size: 1.7rem;
}

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

.hint {
    font-size: 0.9rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 14px;
}

.field {
    grid-column: span 4;
    display: grid;
    gap: 6px;
}

.field-wide {
    grid-column: span 8;
}

.field-full {
    grid-column: span 12;
}

label {
    color: var(--muted);
    font-weight: 650;
    font-size: 0.9rem;
}

input,
select,
textarea {
    width: 100%;
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 10px 12px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: 3px solid rgba(17, 106, 92, 0.18);
    border-color: var(--primary);
}

.button,
button,
input[type="submit"] {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 10px 14px;
    background: var(--primary);
    color: white;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    text-decoration: none;
}

.button:hover,
button:hover,
input[type="submit"]:hover {
    background: var(--primary-dark);
    text-decoration: none;
}

.button-secondary {
    background: #fff;
    color: var(--primary);
}

.button-secondary:hover {
    background: var(--surface-soft);
    color: var(--primary-dark);
}

.button-danger {
    border-color: var(--danger);
    background: var(--danger);
}

.button-danger:hover {
    background: #8f1826;
}

.button-small {
    min-height: 34px;
    padding: 7px 10px;
    font-size: 0.9rem;
}

.inline-form {
    display: inline-flex;
    margin: 0;
}

.table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 760px;
}

.data-table th,
.data-table td {
    padding: 11px 12px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.data-table th {
    background: #edf3f5;
    color: #34414d;
    font-size: 0.86rem;
    text-transform: uppercase;
}

.data-table tr:last-child td {
    border-bottom: 0;
}

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

.empty {
    padding: 24px;
    color: var(--muted);
    text-align: center;
}

.alert {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: var(--surface);
}

.alert-success {
    border-color: #9dc9b6;
    background: #e9f7ef;
}

.alert-error {
    border-color: #e4a3ac;
    background: #fff0f2;
}

.alert-warning {
    border-color: #e5c47b;
    background: #fff7df;
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: linear-gradient(135deg, #eef4f2, #f7f0f2);
}

.login-panel {
    width: min(420px, 100%);
    padding: 26px;
}

.login-logo {
    display: block;
    width: 96px;
    height: 96px;
    object-fit: contain;
    margin: 0 auto 18px;
}

.login-panel h1 {
    margin: 0 0 6px;
    text-align: center;
}

.login-panel p {
    margin: 0 0 18px;
    color: var(--muted);
    text-align: center;
}

.stack {
    display: grid;
    gap: 14px;
}

@media (max-width: 820px) {
    .topbar {
        align-items: flex-start;
    }

    .nav-toggle {
        display: inline-flex;
        align-items: center;
    }

    .nav {
        display: none;
        width: 100%;
        flex-direction: column;
        margin-top: 10px;
    }

    .nav.open {
        display: flex;
    }

    .topbar {
        flex-wrap: wrap;
    }

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

    .span-3,
    .span-4,
    .span-6,
    .span-8 {
        grid-column: span 12;
    }

    .field,
    .field-wide {
        grid-column: span 12;
    }

    .data-table {
        min-width: 0;
    }

    .data-table thead {
        display: none;
    }

    .data-table,
    .data-table tbody,
    .data-table tr,
    .data-table td {
        display: block;
        width: 100%;
    }

    .data-table tr {
        padding: 12px;
        border-bottom: 1px solid var(--line);
    }

    .data-table td {
        display: grid;
        grid-template-columns: 120px 1fr;
        gap: 10px;
        padding: 7px 0;
        border-bottom: 0;
    }

    .data-table td::before {
        content: attr(data-label);
        color: var(--muted);
        font-weight: 700;
    }

    .table-actions {
        white-space: normal;
    }
}