:root {
    --bg: #f6f6f7;
    --surface: #ffffff;
    --surface-subdued: #fafbfb;
    --text: #202223;
    --muted: #6d7175;
    --border: #dfe3e8;
    --border-strong: #c9cccf;
    --primary: #008060;
    --primary-dark: #006e52;
    --focus: #2c6ecb;
    --danger: #d72c0d;
    --warning: #b98900;
    --success-bg: #eaf7ed;
    --success-text: #1f6f43;
    --error-bg: #fff1f0;
    --error-text: #8e1f0b;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.05), 0 1px 3px rgba(63, 63, 68, 0.16);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.45;
}

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

a:hover {
    text-decoration: underline;
}

h1,
h2,
h3,
p {
    margin: 0;
}

button,
input,
select,
textarea {
    font: inherit;
}

.guest-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        linear-gradient(180deg, rgba(0, 128, 96, 0.06), transparent 35%),
        var(--bg);
}

.guest-card {
    width: min(100%, 430px);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
    padding: 28px;
}

.brand-mark,
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
}

.brand-mark span,
.sidebar-brand span {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border-radius: 7px;
    color: #fff;
    background: var(--primary);
    font-weight: 700;
}

.brand-mark {
    margin-bottom: 28px;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 18px;
    border-right: 1px solid var(--border);
    background: var(--surface);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 4px 4px 18px;
    font-weight: 700;
}

.sidebar-nav {
    display: grid;
    gap: 4px;
    margin-top: 8px;
}

.sidebar-nav a,
.btn-plain {
    border-radius: 6px;
    color: var(--text);
    padding: 10px 12px;
}

.sidebar-nav a:hover,
.btn-plain:hover {
    background: var(--surface-subdued);
    text-decoration: none;
}

.sidebar-logout {
    margin-top: auto;
}

.content-shell {
    min-width: 0;
    padding: 24px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.topbar div {
    display: grid;
    gap: 2px;
}

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

.page-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 16px;
    margin: 4px 0 20px;
}

.page-heading.compact {
    display: block;
    margin-bottom: 22px;
}

.page-heading h1 {
    font-size: 26px;
    letter-spacing: 0;
}

.page-heading.compact h1 {
    font-size: 24px;
}

.page-heading p {
    color: var(--muted);
    margin-top: 5px;
}

.eyebrow {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: uppercase;
}

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

.card {
    padding: 18px;
    margin-bottom: 18px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.card-header h2 {
    font-size: 16px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.metric-card {
    padding: 18px;
    display: grid;
    gap: 8px;
}

.metric-card span {
    color: var(--muted);
}

.metric-card strong {
    font-size: 24px;
}

.alert {
    border-radius: 7px;
    padding: 12px 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
}

.alert-success {
    color: var(--success-text);
    background: var(--success-bg);
    border-color: #b7e1c4;
}

.alert-error {
    color: var(--error-text);
    background: var(--error-bg);
    border-color: #fed3d1;
}

.btn {
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 8px 14px;
    cursor: pointer;
    font-weight: 600;
    white-space: nowrap;
    text-decoration: none;
}

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

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

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    color: var(--text);
    background: var(--surface);
    border-color: var(--border-strong);
}

.btn-secondary:hover {
    background: var(--surface-subdued);
}

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

.btn-small {
    min-height: 30px;
    padding: 5px 10px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
}

.button-row,
.actions {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.actions form {
    display: inline;
}

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

.center {
    text-align: center;
    margin-top: 18px;
}

.field {
    display: grid;
    gap: 7px;
}

.field span {
    color: var(--text);
    font-weight: 600;
}

.field input,
.field select,
.field textarea,
.toolbar input {
    width: 100%;
    min-height: 38px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    padding: 8px 10px;
    background: var(--surface);
    color: var(--text);
}

.field textarea {
    resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.toolbar input:focus {
    outline: 2px solid rgba(44, 110, 203, 0.18);
    border-color: var(--focus);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.span-2 {
    grid-column: span 2;
}

.two-column-form {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
    gap: 18px;
    align-items: start;
}

.form-card {
    max-width: 880px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 18px;
}

.logo-upload,
.signature-upload {
    display: flex;
    align-items: center;
    gap: 14px;
}

.logo-upload img,
.logo-placeholder,
.invoice-brand img {
    width: 72px;
    height: 72px;
    border: 1px solid var(--border);
    border-radius: 8px;
    object-fit: contain;
    background: #fff;
}

.logo-placeholder {
    display: grid;
    place-items: center;
    color: #fff;
    background: var(--primary);
    font-size: 28px;
    font-weight: 700;
}

.signature-upload img,
.signature-placeholder {
    width: 180px;
    height: 76px;
    border: 1px solid var(--border);
    border-radius: 8px;
    object-fit: contain;
    background: #fff;
}

.signature-placeholder {
    display: grid;
    place-items: center;
    color: var(--muted);
    background: var(--surface-subdued);
}

.check-field {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--muted);
    font-weight: 500;
}

.check-field input {
    width: 16px;
    height: 16px;
}

.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.toolbar input {
    max-width: 340px;
}

.table-wrap,
.invoice-table-wrap {
    width: 100%;
    overflow-x: auto;
}

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

th,
td {
    padding: 12px 10px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 12px;
    font-weight: 700;
    background: var(--surface-subdued);
}

.right {
    text-align: right;
}

.empty-cell {
    color: var(--muted);
    text-align: center;
    padding: 28px;
}

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    border-radius: 999px;
    padding: 2px 10px;
    font-size: 12px;
    font-weight: 700;
    background: #eef4ff;
    color: #174ea6;
}

.badge-paid {
    background: var(--success-bg);
    color: var(--success-text);
}

.badge-unpaid,
.badge-draft {
    background: #fff5d6;
    color: var(--warning);
}

.badge-cancelled {
    background: var(--error-bg);
    color: var(--error-text);
}

.empty-state,
.empty-state-inline {
    text-align: center;
}

.empty-state {
    padding: 30px 18px;
}

.empty-state__icon {
    width: 68px;
    height: 68px;
    border-radius: 8px;
    display: grid;
    place-items: center;
    margin: 0 auto 18px;
    color: var(--primary);
    background: #e3f1ec;
    font-weight: 800;
}

.empty-state h1,
.empty-state-inline h2 {
    margin-bottom: 12px;
}

.readonly-pill {
    min-height: 38px;
    display: flex;
    align-items: center;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    background: var(--surface-subdued);
    font-weight: 700;
}

.invoice-edit-table {
    min-width: 1180px;
}

.invoice-edit-table th,
.invoice-edit-table td {
    padding: 8px;
}

.invoice-row select,
.invoice-row input {
    min-height: 34px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    padding: 7px 8px;
    width: 100%;
}

.invoice-row .item-name {
    min-width: 180px;
}

.discount-cell {
    display: grid;
    grid-template-columns: 98px 80px;
    gap: 6px;
}

.remove-row {
    width: 34px;
    min-height: 34px;
    padding: 0;
}

.invoice-bottom-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
    gap: 18px;
    align-items: start;
}

.discount-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.totals-list {
    display: grid;
    gap: 10px;
    margin: 0;
}

.totals-list div {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.totals-list dt {
    color: var(--muted);
}

.totals-list dd {
    margin: 0;
    font-weight: 700;
    text-align: right;
}

.totals-list .grand {
    border-bottom: 0;
    padding: 10px 0 0;
    font-size: 18px;
}

.totals-card .btn {
    margin-top: 18px;
}

.tax-igst {
    display: none;
}

.invoice-form.inter-state .tax-igst {
    display: flex;
}

.invoice-form.inter-state .tax-cgst,
.invoice-form.inter-state .tax-sgst {
    display: none;
}

.status-bar form {
    display: flex;
    align-items: end;
    gap: 12px;
}

.inline-field {
    min-width: 220px;
}

.invoice-preview {
    max-width: 1080px;
    margin: 0 auto 24px;
    padding: 30px;
}

.classic-invoice {
    border-color: #b7b7b7;
    border-radius: 4px;
    box-shadow: none;
    color: #111;
}

.invoice-top-title {
    border: 1px solid #b7b7b7;
    border-bottom: 0;
    padding: 12px 16px;
    text-align: center;
    font-size: 24px;
    font-weight: 800;
    text-transform: uppercase;
    background: #f7f7f7;
}

.classic-invoice .invoice-header {
    border: 1px solid #b7b7b7;
    padding: 18px;
    margin-bottom: 0;
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 28px;
}

.invoice-brand {
    display: flex;
    gap: 16px;
    max-width: 620px;
}

.invoice-brand h2,
.invoice-title h2 {
    font-size: 22px;
}

.invoice-brand p,
.invoice-title p,
.invoice-address-grid p {
    color: var(--muted);
    margin-top: 4px;
}

.classic-invoice .invoice-brand p,
.classic-invoice .invoice-title p,
.classic-invoice .invoice-address-grid p {
    color: #3d3d3d;
}

.invoice-title {
    text-align: right;
}

.invoice-address-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    margin-bottom: 24px;
}

.invoice-address-grid > div,
.invoice-note-box,
.invoice-total-box {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    background: var(--surface-subdued);
}

.classic-invoice .invoice-address-grid {
    margin-bottom: 0;
}

.classic-invoice .invoice-address-grid > div,
.classic-invoice .invoice-note-box,
.classic-invoice .invoice-total-box,
.invoice-payment-box,
.invoice-signature-box {
    border: 1px solid #b7b7b7;
    border-radius: 0;
    background: #fff;
}

.classic-invoice .invoice-print-table th,
.classic-invoice .invoice-print-table td {
    border: 1px solid #b7b7b7;
}

.classic-invoice .invoice-print-table th {
    color: #111;
    background: #f2f2f2;
}

.invoice-address-grid span {
    color: var(--muted);
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
}

.invoice-address-grid h3 {
    margin-top: 8px;
}

.invoice-print-table {
    margin-bottom: 24px;
}

.invoice-summary-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
    gap: 0;
    align-items: start;
}

.invoice-note-box h3 {
    margin-bottom: 8px;
}

.invoice-note-box p + h3 {
    margin-top: 18px;
}

.invoice-payment-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 0;
    margin-top: 18px;
}

.invoice-payment-grid-signature-only {
    grid-template-columns: 280px;
    justify-content: end;
}

.invoice-payment-box,
.invoice-signature-box {
    padding: 16px;
}

.invoice-payment-box h3 {
    margin-bottom: 10px;
}

.invoice-payment-box p {
    color: #3d3d3d;
    margin-top: 4px;
}

.upi-qr-row {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
}

.qr-code {
    width: 118px;
    height: 118px;
    border: 1px solid #d8d8d8;
}

.invoice-signature-box {
    display: flex;
    flex-direction: column;
    justify-content: end;
    align-items: center;
    min-height: 156px;
    text-align: center;
    overflow: hidden;
}

.classic-invoice .invoice-signature-box > img,
.invoice-signature-box > img {
    display: block;
    width: auto !important;
    height: auto !important;
    max-width: 126px !important;
    max-height: 46px !important;
    object-fit: contain !important;
    margin-bottom: 6px;
}

.signature-line {
    width: 160px;
    border-bottom: 1px solid #111;
    margin: 12px 0 8px;
}

@media (max-width: 980px) {
    .app-shell,
    .two-column-form,
    .invoice-bottom-grid,
    .invoice-summary-grid,
    .invoice-payment-grid {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--border);
    }

    .sidebar-nav {
        grid-template-columns: repeat(5, max-content);
        overflow-x: auto;
    }

    .sidebar-logout {
        margin-top: 12px;
    }

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

@media (max-width: 700px) {
    .content-shell {
        padding: 16px;
    }

    .page-heading,
    .topbar,
    .invoice-header,
    .invoice-address-grid {
        display: grid;
        grid-template-columns: 1fr;
        align-items: start;
    }

    .form-grid,
    .discount-row,
    .metric-grid {
        grid-template-columns: 1fr;
    }

    .span-2 {
        grid-column: auto;
    }

    .toolbar {
        display: grid;
    }

    .toolbar input {
        max-width: none;
    }

    .invoice-title {
        text-align: left;
    }

    .guest-card {
        padding: 22px;
    }
}