:root {
    --app-bg: #f5f7fb;
    --surface: #ffffff;
    --surface-soft: #eef6f4;
    --line: #d9e2ec;
    --text: #172033;
    --muted: #667085;
    --primary: #0f766e;
    --primary-strong: #115e59;
    --accent: #b7791f;
    --danger: #be123c;
    --info: #2563eb;
    --success-bg: #ecfdf3;
    --warning-bg: #fffbeb;
    --danger-bg: #fff1f2;
    --info-bg: #eff6ff;
    --shadow: 0 6px 18px rgba(15, 23, 42, 0.06);
}

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    background: var(--app-bg);
    color: var(--text);
    font-family: "Segoe UI", Arial, sans-serif;
    font-size: 15px;
    letter-spacing: 0;
}

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

.app-shell {
    max-width: 1180px;
    margin: 0 auto;
}

.app-header {
    position: sticky;
    top: 0;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
}

.app-nav {
    min-height: 58px;
    padding: 0.45rem 0;
}

.brand-mark {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--text);
    font-weight: 750;
    letter-spacing: 0;
}

.brand-icon {
    display: grid;
    width: 36px;
    height: 36px;
    place-items: center;
    border-radius: 8px;
    background: var(--primary);
    color: #fff;
    font-size: 0.9rem;
}

.navbar-toggler {
    border-color: var(--line);
    border-radius: 8px;
}

.nav-scroll {
    gap: 0.25rem;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 38px;
    padding: 0.45rem 0.65rem;
    border-radius: 8px;
    color: var(--muted);
    font-weight: 650;
    white-space: nowrap;
}

.nav-link svg,
.btn svg,
.btn-linkish svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.nav-link:hover,
.nav-link.active {
    background: var(--surface-soft);
    color: var(--primary-strong);
}

.page-shell {
    padding-top: 1rem;
    padding-bottom: 2.5rem;
}

.app-footer {
    padding: 1rem 0 1.5rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.app-alert-stack {
    display: grid;
    gap: 0.6rem;
    margin-bottom: 0.85rem;
}

.app-alert {
    position: relative;
    display: grid;
    grid-template-columns: 24px minmax(0, 1fr) 28px;
    gap: 0.65rem;
    align-items: start;
    padding: 0.72rem 0.75rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 0;
}

.app-alert-icon {
    display: grid;
    place-items: center;
    width: 24px;
    height: 24px;
}

.app-alert-icon svg {
    width: 19px;
    height: 19px;
}

.app-alert-body {
    display: grid;
    gap: 0.1rem;
    min-width: 0;
}

.app-alert-body strong {
    font-size: 0.9rem;
}

.app-alert-body span {
    color: #344054;
    line-height: 1.35;
}

.app-alert .btn-close {
    position: static;
    width: 28px;
    height: 28px;
    padding: 0;
    align-self: center;
}

.app-alert-success {
    border-color: #bbf7d0;
    background: var(--success-bg);
    color: #166534;
}

.app-alert-warning {
    border-color: #fde68a;
    background: var(--warning-bg);
    color: #92400e;
}

.app-alert-danger {
    border-color: #fecdd3;
    background: var(--danger-bg);
    color: var(--danger);
}

.app-alert-info {
    border-color: #bfdbfe;
    background: var(--info-bg);
    color: var(--info);
}

.action-alert {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    border: 1px solid #fde68a;
    border-radius: 8px;
    background: var(--warning-bg);
    color: #92400e;
}

.action-alert > div {
    display: grid;
    gap: 0.15rem;
    min-width: 0;
}

.action-alert span {
    color: #854d0e;
}

.page-title-row,
.toolbar-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.85rem;
}

.page-kicker {
    margin-bottom: 0.25rem;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 650;
}

.page-title {
    margin: 0;
    font-size: clamp(1.35rem, 1.8vw, 1.8rem);
    font-weight: 780;
    letter-spacing: 0;
}

.page-subtitle {
    margin: 0.35rem 0 0;
    color: var(--muted);
    max-width: 680px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
}

.metric-card,
.panel,
.entity-card {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.metric-card {
    min-height: 98px;
    padding: 0.85rem;
}

.metric-label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    min-height: 24px;
    color: var(--muted);
    font-weight: 650;
}

.metric-label svg {
    width: 18px;
    height: 18px;
}

.metric-value {
    margin-top: 0.55rem;
    font-size: 1.45rem;
    font-weight: 780;
    line-height: 1.2;
    overflow-wrap: anywhere;
}

.metric-note {
    margin-top: 0.15rem;
    color: var(--muted);
    font-size: 0.86rem;
}

.content-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.8fr);
    gap: 0.85rem;
    margin-top: 0.85rem;
}

.panel {
    padding: 0.9rem;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-bottom: 0.8rem;
}

.panel-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 760;
}

.filter-bar {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) minmax(150px, 220px) auto;
    gap: 0.75rem;
    align-items: end;
    margin-bottom: 1rem;
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}

.form-panel {
    max-width: 760px;
}

.meter-form-panel {
    max-width: 980px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.form-grid .full-row {
    grid-column: 1 / -1;
}

.form-intro-grid {
    margin-bottom: 0.85rem;
}

.old-reading-tools {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fbfcfe;
}

.old-reading-tools .btn {
    flex: 0 0 auto;
}

.old-reading-status {
    min-width: 0;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 650;
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.old-reading-status:empty {
    display: none;
}

.old-reading-status[data-status="success"] {
    color: #166534;
}

.old-reading-status[data-status="warn"] {
    color: #92400e;
}

.old-reading-status[data-status="danger"] {
    color: var(--danger);
}

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

.meter-form-layout > .full-row {
    grid-column: 1 / -1;
}

.meter-section,
.meter-readout {
    --meter-color: var(--primary);
    --meter-bg: #fbfcfe;
    --meter-border: var(--line);
    min-width: 0;
    border: 1px solid var(--meter-border);
    border-left: 4px solid var(--meter-color);
    border-radius: 8px;
    background: var(--meter-bg);
}

.meter-section-electric,
.meter-readout-electric {
    --meter-color: #b7791f;
    --meter-bg: #fffbeb;
    --meter-border: #fde68a;
}

.meter-section-water,
.meter-readout-water {
    --meter-color: #2563eb;
    --meter-bg: #eff6ff;
    --meter-border: #bfdbfe;
}

.meter-section {
    padding: 0.85rem;
}

.meter-section-head,
.meter-readout-title {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--meter-color);
    font-weight: 780;
}

.meter-section-head {
    margin-bottom: 0.75rem;
}

.meter-section-head svg,
.meter-readout-title svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.meter-section-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 780;
    letter-spacing: 0;
}

.meter-input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.72rem;
}

.meter-input-grid .full-row {
    grid-column: 1 / -1;
}

.meter-pair {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.65rem;
    align-items: stretch;
    min-width: 0;
}

.meter-readout {
    padding: 0.72rem;
}

.meter-readout-title {
    margin-bottom: 0.38rem;
    font-size: 0.9rem;
}

.meter-readout-main,
.meter-readout-sub,
.meter-readout-money {
    overflow-wrap: anywhere;
}

.meter-readout-main {
    color: var(--text);
    font-weight: 760;
    line-height: 1.35;
}

.meter-readout-sub {
    margin-top: 0.2rem;
    color: var(--muted);
    font-size: 0.88rem;
    line-height: 1.35;
}

.meter-readout-money {
    margin-top: 0.3rem;
    color: #1f2937;
    font-variant-numeric: tabular-nums;
    font-weight: 820;
    line-height: 1.35;
}

.meter-table-cell .meter-pair {
    min-width: 410px;
}

.meter-total-line {
    padding-top: 0.35rem;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    font-weight: 780;
}

.form-label {
    margin-bottom: 0.35rem;
    font-weight: 700;
    color: #344054;
    font-size: 0.9rem;
}

.form-control,
.form-select {
    min-height: 40px;
    border-color: var(--line);
    border-radius: 8px;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(15, 118, 110, 0.14);
}

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

.app-table {
    width: 100%;
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
}

.app-table th {
    padding: 0.62rem 0.7rem;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 750;
    text-transform: uppercase;
}

.app-table td {
    padding: 0.7rem;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

.table-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.4rem;
    flex-wrap: wrap;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    min-height: 38px;
    border-radius: 8px;
    font-weight: 700;
    letter-spacing: 0;
}

.btn-primary {
    border-color: var(--primary);
    background: var(--primary);
}

.btn-primary:hover,
.btn-primary:focus {
    border-color: var(--primary-strong);
    background: var(--primary-strong);
}

.btn-outline-primary {
    border-color: rgba(15, 118, 110, 0.35);
    color: var(--primary-strong);
}

.btn-outline-primary:hover {
    border-color: var(--primary);
    background: var(--surface-soft);
    color: var(--primary-strong);
}

.btn-outline-danger {
    border-color: rgba(190, 18, 60, 0.35);
    color: var(--danger);
}

.btn-linkish {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    min-height: 36px;
    padding: 0.35rem 0.5rem;
    border-radius: 8px;
    color: var(--primary-strong);
    font-weight: 700;
    text-decoration: none;
}

.btn-linkish:hover {
    background: var(--surface-soft);
    color: var(--primary-strong);
}

.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 750;
    white-space: nowrap;
}

.status-good {
    background: #dcfce7;
    color: #166534;
}

.status-empty {
    background: #dbeafe;
    color: #1d4ed8;
}

.status-warn {
    background: #fef3c7;
    color: #92400e;
}

.status-danger {
    background: #ffe4e6;
    color: #be123c;
}

.status-muted {
    background: #eef2f7;
    color: #475467;
}

.money {
    font-variant-numeric: tabular-nums;
    font-weight: 750;
}

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

.formula-box {
    display: grid;
    gap: 0.35rem;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fbfcfe;
}

.meter-live-preview {
    gap: 0.75rem;
    margin-top: 0;
}

.meter-live-title {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text);
    font-weight: 780;
}

.meter-live-title svg {
    width: 18px;
    height: 18px;
    color: var(--primary);
}

.meter-preview-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
    align-items: stretch;
}

.meter-preview-column {
    --meter-color: var(--primary);
    --meter-bg: var(--surface);
    --meter-border: var(--line);
    min-width: 0;
    padding: 0.72rem;
    border: 1px solid var(--meter-border);
    border-left: 4px solid var(--meter-color);
    border-radius: 8px;
    background: var(--meter-bg);
}

.meter-preview-electric {
    --meter-color: #b7791f;
    --meter-bg: #fffbeb;
    --meter-border: #fde68a;
}

.meter-preview-water {
    --meter-color: #2563eb;
    --meter-bg: #eff6ff;
    --meter-border: #bfdbfe;
}

.meter-preview-column-title {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.55rem;
    color: var(--meter-color);
    font-size: 0.9rem;
    font-weight: 780;
}

.meter-preview-column-title svg {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
}

.meter-section-preview {
    margin-top: 0.78rem;
    padding-top: 0.72rem;
    border-top: 1px solid var(--meter-border);
}

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

.meter-section-preview .meter-preview-warnings {
    margin-top: 0.4rem;
}

.meter-summary-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
}

.meter-summary-item {
    min-width: 0;
    padding: 0.65rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--surface);
}

.meter-summary-item span {
    display: block;
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 700;
    line-height: 1.25;
}

.meter-summary-item strong {
    display: block;
    margin-top: 0.22rem;
    color: var(--text);
    font-variant-numeric: tabular-nums;
    font-size: 1.02rem;
    overflow-wrap: anywhere;
}

.meter-summary-electric {
    border-color: #fde68a;
    background: #fffbeb;
}

.meter-summary-water {
    border-color: #bfdbfe;
    background: #eff6ff;
}

.meter-summary-total {
    border-color: #99f6e4;
    background: #f0fdfa;
}

.meter-summary-total strong {
    color: var(--primary);
}

.meter-preview-total {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid var(--primary);
    padding: 0.72rem 0.85rem;
}

.meter-preview-total strong {
    margin-top: 0;
    font-size: 1.08rem;
    text-align: right;
}

.meter-preview-warnings {
    display: grid;
    gap: 0.25rem;
    margin-top: 0.45rem;
    color: var(--danger);
    font-size: 0.86rem;
    font-weight: 700;
}

.meter-preview-warnings span:empty {
    display: none;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.8rem;
}

.detail-item {
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: #fbfcfe;
}

.detail-label {
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 650;
}

.detail-value {
    margin-top: 0.25rem;
    font-weight: 760;
}

.empty-state {
    padding: 2rem 1rem;
    border: 1px dashed var(--line);
    border-radius: 8px;
    color: var(--muted);
    text-align: center;
}

.validation-summary-errors {
    margin-bottom: 1rem;
    padding: 0.75rem 0.9rem;
    border: 1px solid #fecdd3;
    border-radius: 8px;
    background: #fff1f2;
    color: var(--danger);
    font-weight: 650;
}

.validation-summary-valid {
    display: none;
}

.validation-summary-errors ul {
    margin: 0.35rem 0 0;
    padding-left: 1.1rem;
    font-weight: 500;
}

.field-validation-error,
.text-danger {
    display: block;
    margin-top: 0.28rem;
    color: var(--danger) !important;
    font-size: 0.85rem;
    font-weight: 650;
}

.input-validation-error {
    border-color: #fb7185 !important;
    background: #fffafa;
}

.input-validation-error:focus {
    border-color: var(--danger) !important;
    box-shadow: 0 0 0 0.2rem rgba(190, 18, 60, 0.12) !important;
}

@media (max-width: 992px) {
    .metric-grid,
    .content-grid,
    .detail-grid,
    .meter-summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nav-scroll {
        padding-top: 0.75rem;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 14px;
    }

    .app-shell {
        padding-left: 0.72rem;
        padding-right: 0.72rem;
    }

    .page-shell {
        padding-top: 0.72rem;
        padding-bottom: 1.4rem;
    }

    .app-nav {
        min-height: 58px;
        padding: 0.35rem 0;
    }

    .brand-icon {
        width: 34px;
        height: 34px;
    }

    .nav-scroll {
        gap: 0.3rem;
        padding: 0.65rem 0 0.2rem;
    }

    .nav-link {
        min-height: 42px;
        padding: 0.55rem 0.65rem;
        border: 1px solid transparent;
        background: #fbfcfe;
    }

    .nav-link.active {
        border-color: rgba(15, 118, 110, 0.2);
    }

    .page-title-row,
    .toolbar-row,
    .panel-header {
        align-items: stretch;
        flex-direction: column;
        gap: 0.6rem;
    }

    .action-alert {
        align-items: stretch;
        flex-direction: column;
        gap: 0.65rem;
    }

    .action-alert .btn {
        width: 100%;
    }

    .page-title-row,
    .toolbar-row {
        margin-bottom: 0.7rem;
    }

    .page-kicker {
        margin-bottom: 0.18rem;
        font-size: 0.82rem;
    }

    .page-title {
        font-size: 1.25rem;
        line-height: 1.22;
    }

    .page-subtitle {
        margin-top: 0.25rem;
        font-size: 0.88rem;
        line-height: 1.35;
    }

    .metric-grid,
    .content-grid,
    .detail-grid,
    .form-grid,
    .meter-form-layout,
    .meter-input-grid,
    .meter-pair,
    .meter-preview-columns,
    .meter-summary-grid,
    .filter-bar {
        grid-template-columns: 1fr;
    }

    .metric-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.55rem;
    }

    .form-intro-grid,
    .meter-form-layout,
    .form-grid,
    .meter-input-grid,
    .filter-bar {
        gap: 0.62rem;
    }

    .old-reading-tools {
        align-items: stretch;
        flex-direction: column;
        gap: 0.45rem;
        padding: 0.62rem;
    }

    .old-reading-tools .btn {
        width: 100%;
    }

    .old-reading-status {
        font-size: 0.82rem;
    }

    .meter-form-panel .toolbar-row {
        margin-top: 0.75rem !important;
    }

    .metric-card {
        min-height: 84px;
    }

    .metric-value {
        font-size: 1.18rem;
    }

    .metric-label,
    .metric-note {
        font-size: 0.82rem;
    }

    .filter-bar,
    .panel,
    .metric-card,
    .meter-section,
    .meter-preview-column,
    .meter-readout {
        padding: 0.75rem;
    }

    .form-panel,
    .meter-form-panel {
        max-width: none;
    }

    .form-label {
        margin-bottom: 0.28rem;
        font-size: 0.86rem;
    }

    .form-control,
    .form-select,
    .btn {
        min-height: 42px;
    }

    .meter-section-head {
        margin-bottom: 0.62rem;
    }

    .meter-section-preview {
        margin-top: 0.65rem;
        padding-top: 0.62rem;
    }

    .meter-section-preview .meter-summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.45rem;
    }

    .meter-summary-item {
        padding: 0.58rem;
    }

    .meter-summary-item span {
        font-size: 0.78rem;
    }

    .meter-summary-item strong {
        font-size: 0.96rem;
    }

    .meter-preview-total {
        grid-template-columns: 1fr;
    }

    .meter-preview-total strong {
        text-align: left;
    }

    .meter-table-cell .meter-pair {
        min-width: 0;
    }

    .app-alert {
        grid-template-columns: 22px minmax(0, 1fr) 28px;
        padding: 0.68rem;
    }

    .table-wrap {
        overflow: visible;
    }

    .app-table thead {
        display: none;
    }

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

    .app-table tr {
        margin-bottom: 0.58rem;
        border: 1px solid var(--line);
        border-radius: 8px;
        background: var(--surface);
        box-shadow: var(--shadow);
        overflow: hidden;
    }

    .app-table td {
        display: grid;
        grid-template-columns: minmax(96px, 34%) minmax(0, 1fr);
        gap: 0.5rem;
        padding: 0.54rem 0.68rem;
        border-bottom: 1px solid var(--line);
        word-break: break-word;
    }

    .app-table td::before {
        content: attr(data-label);
        color: var(--muted);
        font-size: 0.82rem;
        font-weight: 750;
    }

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

    .table-actions {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
        gap: 0.42rem;
        width: 100%;
        align-items: stretch;
        justify-content: stretch;
    }

    .table-actions form {
        display: block;
        width: 100%;
    }

    .table-actions form:last-child {
        grid-column: 1 / -1;
    }

    .table-actions .status-pill {
        grid-column: 1 / -1;
        justify-content: center;
        width: 100%;
        min-height: 34px;
        text-align: center;
        white-space: normal;
    }

    .table-actions .btn,
    .toolbar-row .btn,
    .page-title-row .btn {
        width: 100%;
    }
}

@media (max-width: 420px) {
    .brand-mark span:last-child {
        max-width: 190px;
        white-space: normal;
        line-height: 1.15;
    }

    .app-table td {
        grid-template-columns: 1fr;
        gap: 0.18rem;
        padding: 0.5rem 0.62rem;
    }

    .status-pill {
        width: fit-content;
    }
}