/* ── OO Settlement Processor: Ledger Theme ── */

:root {
    --paper: #faf8f3;
    --paper-alt: #f3f0e8;
    --ink: #1a1a1a;
    --ink-light: #5c5c5c;
    --ink-faint: #9a9a9a;
    --rule: #c8c2b4;
    --rule-heavy: #8a8478;
    --debit: #1a1a1a;
    --credit: #1a1a1a;
    --red-ink: #8b1a1a;
    --green-ink: #1a5c2a;
    --blue-ink: #1a3a6b;
    --status-reconciled: #1a5c2a;
    --status-flagged: #8b1a1a;
    --status-parsed: #6b5a1a;
    --status-posted: #1a3a6b;
    --accent: #6b5a1a;
    --hover: #eee9dd;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

@font-face {
    font-family: 'Tabular';
    src: local('SF Mono'), local('Menlo'), local('Consolas'), local('DejaVu Sans Mono');
}

body {
    font-family: 'DM Sans', -apple-system, 'Segoe UI', system-ui, sans-serif;
    background: var(--paper);
    color: var(--ink);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
}

/* ── Page structure ── */

.page-frame {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 2.5rem;
}

/* ── Masthead ── */

.masthead {
    border-bottom: 2px solid var(--ink);
    padding-bottom: 0.75rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.masthead h1 {
    font-family: 'Syne', 'DM Sans', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.masthead-right {
    font-size: 0.8rem;
    color: var(--ink-light);
}

/* ── Hamburger toggle (hidden on desktop) ── */

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    margin-left: 0.75rem;
    flex-direction: column;
    gap: 4px;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--ink);
    transition: transform 0.2s, opacity 0.2s;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ── Overlay (mobile only) ── */

.nav-overlay {
    display: none;
}

/* ── Navigation ── */

.nav-bar {
    display: flex;
    gap: 1.5rem;
    border-bottom: 1px solid var(--rule);
    padding-bottom: 0.5rem;
    margin-bottom: 2rem;
    font-size: 0.85rem;
}

.nav-bar a {
    color: var(--ink-light);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 500;
}

.nav-bar a:hover,
.nav-bar a.active {
    color: var(--ink);
    border-bottom: 2px solid var(--ink);
    padding-bottom: calc(0.5rem - 2px);
}

.nav-mobile-only {
    display: none;
}

/* ── Section headers ── */

.section-head {
    font-family: 'Syne', 'DM Sans', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--ink-light);
    border-bottom: 1px solid var(--rule-heavy);
    padding-bottom: 0.25rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.section-head:first-child {
    margin-top: 0;
}

/* ── Ledger table ── */

.ledger {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.ledger th {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
    font-weight: 500;
    text-align: left;
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--rule-heavy);
}

.ledger th.num {
    text-align: right;
}

.ledger td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--rule);
    vertical-align: top;
}

.ledger tr:last-child td {
    border-bottom: 1px solid var(--rule-heavy);
}

.ledger tr:hover td {
    background: var(--hover);
}

.ledger .num {
    text-align: right;
    font-family: 'Tabular', 'SF Mono', 'Menlo', 'Consolas', monospace;
    font-size: 0.82rem;
    font-variant-numeric: tabular-nums;
}

.ledger .total-row td {
    border-top: 2px solid var(--ink);
    border-bottom: 2px solid var(--ink);
    font-weight: 700;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

.ledger .subtotal-row td {
    border-top: 1px solid var(--rule-heavy);
    font-weight: 600;
}

/* ── Journal entry table (debit/credit columns) ── */

.journal {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.journal th {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
    font-weight: 500;
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--rule-heavy);
}

.journal td {
    padding: 0.35rem 0.5rem;
    border-bottom: 1px solid var(--rule);
    vertical-align: top;
}

.journal .dr { text-align: right; font-family: 'Tabular', monospace; font-variant-numeric: tabular-nums; }
.journal .cr { text-align: right; font-family: 'Tabular', monospace; font-variant-numeric: tabular-nums; padding-left: 1.5rem; }

.journal .dr-val { color: var(--ink); }
.journal .cr-val { color: var(--ink); }

.journal .total-row td {
    border-top: 2px solid var(--ink);
    border-bottom: 3px double var(--ink);
    font-weight: 700;
}

/* ── Status badges ── */

.status {
    display: inline-block;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border: 1px solid;
}

.status-parsed     { color: var(--status-parsed); border-color: var(--status-parsed); }
.status-reconciled { color: var(--status-reconciled); border-color: var(--status-reconciled); }
.status-flagged    { color: var(--status-flagged); border-color: var(--status-flagged); background: #f5eded; }
.status-posted     { color: var(--status-posted); border-color: var(--status-posted); }

/* ── Settlement header block ── */

.settlement-header {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.25rem 2rem;
    border: 1px solid var(--rule-heavy);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: var(--paper-alt);
}

.settlement-header dt {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
}

.settlement-header dd {
    font-family: 'Tabular', monospace;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.settlement-header .net-payable {
    font-size: 1.4rem;
    font-weight: 700;
}

/* ── Cards for KPI / summary values ── */

.kpi-row {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.kpi {
    border: 1px solid var(--rule);
    padding: 0.75rem 1rem;
    min-width: 140px;
    background: var(--paper-alt);
}

.kpi-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
    margin-bottom: 0.15rem;
}

.kpi-value {
    font-family: 'Tabular', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* ── Buttons & forms ── */

.btn {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--ink);
    background: transparent;
    color: var(--ink);
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, color 0.15s;
}

.btn:hover {
    background: var(--ink);
    color: var(--paper);
}

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

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

.btn-danger {
    border-color: var(--red-ink);
    color: var(--red-ink);
}

.btn-danger:hover {
    background: var(--red-ink);
    color: var(--paper);
}

.btn-sm {
    font-size: 0.65rem;
    padding: 0.3rem 0.75rem;
}

/* ── File upload ── */

.upload-zone {
    border: 2px dashed var(--rule);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    margin-bottom: 1.5rem;
    transition: border-color 0.2s;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--ink);
}

.upload-zone p {
    color: var(--ink-light);
    font-size: 0.85rem;
}

.upload-zone input[type="file"] {
    display: none;
}

/* ── Flash messages ── */

.flash {
    padding: 0.75rem 1rem;
    border: 1px solid;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
}

.flash-success { border-color: var(--green-ink); color: var(--green-ink); background: #f0f5f1; }
.flash-error   { border-color: var(--red-ink); color: var(--red-ink); background: #f5eded; }
.flash-warning { border-color: var(--accent); color: var(--accent); background: #f5f2e8; }

/* ── Flag / review banner ── */

.flag-banner {
    background: #f5eded;
    border: 1px solid var(--red-ink);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: var(--red-ink);
}

.flag-banner strong {
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.08em;
}

/* ── GST banner ── */

.gst-banner {
    background: #f5f2e8;
    border: 1px solid var(--accent);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--accent);
}

/* ── Forms ── */

.form-row {
    margin-bottom: 1rem;
}

.form-row label {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-light);
    margin-bottom: 0.25rem;
}

.form-row input,
.form-row select,
.form-row textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--rule);
    background: white;
    font-family: inherit;
    font-size: 0.85rem;
    color: var(--ink);
}

.form-row input:focus,
.form-row select:focus {
    outline: none;
    border-color: var(--ink);
}

/* ── Empty states ── */

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--ink-faint);
}

.empty-state p {
    font-size: 0.9rem;
}

/* ── Pagination ── */

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    font-size: 0.8rem;
}

.pagination a,
.pagination span {
    padding: 0.3rem 0.6rem;
    border: 1px solid var(--rule);
    text-decoration: none;
    color: var(--ink);
}

.pagination a:hover { background: var(--hover); }
.pagination .current { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ── Utility ── */

.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 0.5rem; }

/* ── Maintenance form grid ── */

.maint-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
    max-width: 720px;
}

/* ── Inline table inputs (maintenance form) ── */

.entry-input {
    width: 100%;
    padding: 0.3rem 0.4rem;
    border: 1px solid var(--rule);
    background: white;
    font-family: inherit;
    font-size: 0.82rem;
    color: var(--ink);
    box-sizing: border-box;
}

.entry-input:focus {
    outline: none;
    border-color: var(--ink);
}

/* ── PWA install banner ── */

.install-banner {
    display: none;
    border: 1px solid var(--rule-heavy);
    background: var(--paper-alt);
    padding: 0.75rem 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    font-size: 0.85rem;
}

.install-banner.visible { display: flex; }

.install-banner-text {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.install-banner-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
}

.install-banner-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.install-dismiss {
    background: none;
    border: none;
    color: var(--ink-faint);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 0 0.25rem;
    line-height: 1;
}

/* ── Standalone PWA adjustments ── */

@media (display-mode: standalone) {
    .install-banner { display: none !important; }
    body { padding-top: env(safe-area-inset-top); }
    .page-frame { padding-bottom: calc(2rem + env(safe-area-inset-bottom)); }
}

/* ── Responsive: Tablet (≤768px) ── */

@media (max-width: 768px) {
    .page-frame {
        padding: 1.25rem 1rem;
    }

    .masthead h1 { font-size: 0.95rem; }

    .masthead-right {
        display: flex;
        align-items: center;
    }

    .masthead-desktop-only {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: 998;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.25s, visibility 0.25s;
    }

    .nav-overlay.open {
        opacity: 1;
        visibility: visible;
    }

    .nav-bar {
        position: fixed;
        top: 0;
        right: 0;
        bottom: 0;
        width: 220px;
        z-index: 999;
        flex-direction: column;
        gap: 0;
        background: var(--paper);
        border-bottom: none;
        border-left: 2px solid var(--ink);
        padding: 1.5rem 0;
        margin-bottom: 0;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        overflow-y: auto;
    }

    .nav-bar.open {
        transform: translateX(0);
    }

    .nav-bar a {
        display: block;
        padding: 0.65rem 1.25rem;
        font-size: 0.8rem;
        border-bottom: 1px solid var(--rule);
        white-space: nowrap;
    }

    .nav-bar a:hover,
    .nav-bar a.active {
        border-bottom: 1px solid var(--rule);
        padding-bottom: 0.65rem;
        background: var(--hover);
    }

    .nav-bar a.active {
        color: var(--ink);
        border-left: 3px solid var(--ink);
        padding-left: calc(1.25rem - 3px);
    }

    .nav-mobile-only {
        display: block;
    }

    .nav-bar .nav-signout {
        margin-top: auto;
        border-top: 2px solid var(--rule-heavy);
        border-bottom: none;
        color: var(--red-ink);
    }

    .nav-bar .nav-signout:hover {
        background: #f5eded;
    }

    .kpi-row {
        gap: 0.75rem;
    }

    .kpi {
        min-width: calc(50% - 0.75rem);
        flex: 1 1 calc(50% - 0.75rem);
    }

    .settlement-header {
        grid-template-columns: 1fr;
        gap: 0.15rem;
    }

    .ledger-scroll {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-left: -1rem;
        margin-right: -1rem;
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .maint-form-grid {
        grid-template-columns: 1fr 1fr;
    }

    .flex-between {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
}

/* ── Responsive: Phone (≤480px) ── */

@media (max-width: 480px) {
    .page-frame {
        padding: 1rem 0.75rem;
    }

    .masthead {
        flex-direction: row;
        gap: 0.25rem;
        margin-bottom: 1rem;
    }

    .masthead-right {
        font-size: 0.7rem;
    }

    .section-head {
        font-size: 0.7rem;
        margin-top: 1.5rem;
    }

    .kpi {
        min-width: 100%;
        flex: 1 1 100%;
        padding: 0.5rem 0.75rem;
    }

    .kpi-row {
        gap: 0.5rem;
        margin-bottom: 1rem;
    }

    .kpi-value {
        font-size: 1rem;
    }

    .ledger, .journal {
        font-size: 0.78rem;
    }

    .ledger th, .journal th {
        font-size: 0.6rem;
        padding: 0.25rem 0.35rem;
    }

    .ledger td, .journal td {
        padding: 0.25rem 0.35rem;
    }

    .ledger .num, .journal .dr, .journal .cr {
        font-size: 0.75rem;
    }

    .settlement-header dd {
        font-size: 0.82rem;
    }

    .settlement-header .net-payable {
        font-size: 1.2rem;
    }

    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.7rem;
    }

    .btn-sm {
        padding: 0.3rem 0.6rem;
        font-size: 0.6rem;
    }

    .maint-form-grid {
        grid-template-columns: 1fr;
    }

    .upload-zone {
        padding: 1.5rem 1rem;
    }

    .flash {
        font-size: 0.8rem;
        padding: 0.5rem 0.75rem;
    }

    .install-banner {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
        padding: 0.75rem;
    }

    .install-banner-text {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ── Responsive: Login/Register (standalone pages) ── */

@media (max-width: 480px) {
    .login-container,
    .register-container {
        margin-top: 2rem !important;
        padding: 0 1rem;
    }
}

/* ── Touch targets ── */

@media (pointer: coarse) {
    .btn {
        min-height: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .btn-sm {
        min-height: 36px;
    }

    .ledger a, .journal a {
        display: inline-block;
        padding: 0.2rem 0;
    }

    .form-row input,
    .form-row select,
    .form-row textarea {
        min-height: 44px;
        font-size: 16px;
    }
}

/* ── Print ── */

@media print {
    .nav-bar, .masthead-right, .btn, .upload-zone, .install-banner, .nav-toggle, .nav-overlay { display: none !important; }
    body { font-size: 11px; }
    .page-frame { max-width: 100%; padding: 0; }
    .ledger td, .journal td { padding: 0.2rem 0.4rem; }
}