* {
    box-sizing: border-box;
}
body {
    margin: 0;
    font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: radial-gradient(circle at top left, rgba(15, 76, 129, 0.16), transparent 32%), #f1f4f8;
    color: #14233c;
}
header {
    background: linear-gradient(135deg, #0f4c81 0%, #163e78 100%);
    color: #fff;
    padding: 18px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    position: sticky;
    top: 0;
    z-index: 20;
    box-shadow: 0 10px 30px rgba(15, 28, 52, 0.12);
}
.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.brand img {
    width: 60px;
    height: auto;
    border-radius: 16px;
    background: rgba(255,255,255,0.12);
    padding: 8px;
}
.brand-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.brand-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.brand-tagline {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.82);
}
nav {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: flex-start;
}
nav a {
    color: #fff;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.2s ease, transform 0.2s ease;
}
nav a:hover,
nav a.active {
    background: rgba(255,255,255,0.18);
    transform: translateY(-1px);
}
nav li.dropdown {
    position: relative;
}
nav li.dropdown > a::after {
    content: ' ▼';
    font-size: 0.75rem;
    margin-left: 4px;
}
nav a.dropdown-toggle {
    cursor: pointer;
    user-select: none;
}
nav .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #0f4c81;
    border-radius: 8px;
    min-width: 180px;
    flex-direction: column;
    gap: 0;
    padding: 8px 0;
    margin-top: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
    box-shadow: 0 10px 30px rgba(15, 28, 52, 0.3);
    z-index: 100;
    display: flex;
}
nav a.dropdown-toggle:hover + .submenu,
nav a.dropdown-toggle:focus + .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
nav li.dropdown.open .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
nav .submenu li {
    list-style: none;
    margin: 0;
    padding: 0;
}
nav .submenu a {
    display: block;
    padding: 10px 16px;
    color: #fff;
    text-decoration: none;
    border-radius: 0;
    font-weight: 500;
    font-size: 0.95rem;
}
nav .submenu a:hover {
    background: rgba(255,255,255,0.15);
    transform: none;
}
.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    flex-wrap: wrap;
}
.header-right a.logout-link {
    color: #fff;
    background: rgba(255,255,255,0.12);
    padding: 10px 14px;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s ease, transform 0.2s ease;
}
.header-right a.logout-link:hover {
    background: rgba(255,255,255,0.2);
}
.header-right .user-welcome {
    color: rgba(255,255,255,0.9);
}
main {
    max-width: 1180px;
    margin: 28px auto;
    padding: 0 18px 40px;
}
.page-header h1 {
    margin: 0 0 24px;
    font-size: clamp(2rem, 3vw, 2.8rem);
    letter-spacing: -0.03em;
}
.search-form {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 18px;
}
.search-form input[type="text"],
.search-form input[type="date"] {
    flex: 1;
    min-width: 180px;
    padding: 12px 14px;
    border: 1px solid #d9e2ec;
    border-radius: 12px;
    background: #fff;
    box-shadow: inset 0 1px 2px rgba(15, 28, 52, 0.06);
}
.search-form button {
    background: #d93939;
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease;
}
.search-form button:hover {
    background: #b42f2f;
    transform: translateY(-1px);
}
.login-container {
    max-width: 460px;
    margin: 40px auto;
    padding: 28px;
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 20px;
    box-shadow: 0 24px 60px rgba(15, 28, 52, 0.08);
}
.login-container h2 {
    margin: 0 0 20px;
    font-size: 1.5rem;
    color: #0f4c81;
}
.login-form {
    display: grid;
    gap: 16px;
}
.login-form label {
    font-weight: 600;
}
.login-form .checkbox-field {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}
.login-form input[type="text"],
.login-form input[type="password"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid #c7cbd1;
    border-radius: 8px;
    font-size: 1rem;
}
.login-form button {
    width: 100%;
    padding: 12px 14px;
    border: none;
    border-radius: 10px;
    background: #0f4c81;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
}
.login-form button:hover {
    background: #0b3560;
}
.table-wrapper {
    overflow-x: auto;
    background: #fff;
    border: 1px solid #d8dee4;
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(15, 28, 52, 0.08);
}
table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}
th, td {
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid #eef2f5;
}
th {
    background: #f1f5f9;
    font-weight: 700;
}
tr:last-child td {
    border-bottom: none;
}
.button-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    background: #d93939;
    color: #fff;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    font-weight: 700;
    transition: transform 0.2s ease, background 0.2s ease;
}
.button-link:hover {
    background: #b42f2f;
    transform: translateY(-1px);
}
.button,
button {
    font: inherit;
}
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    background: #e0e7f1;
    color: #1a2940;
    text-decoration: none;
    border-radius: 8px;
    border: none;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}
.button:hover {
    background: #d0d7e0;
    transform: translateY(-1px);
}
.summary-box {
    display: grid;
    gap: 16px;
    margin: 24px 0;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.card {
    background: #fff;
    padding: 20px;
    border: 1px solid rgba(15, 28, 52, 0.08);
    border-radius: 18px;
    box-shadow: 0 14px 42px rgba(15, 28, 52, 0.06);
}
.card h3 {
    margin: 0 0 10px;
    font-size: 1rem;
}
.card p {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 800;
}
.card h2,
.user-form-card h2,
.user-list-card h2 {
    margin: 0 0 18px;
    color: #0f4c81;
    font-size: 1.25rem;
}
.chart-card {
    margin: 24px 0;
    padding: 22px;
    background: #fff;
    border: 1px solid rgba(15, 28, 52, 0.08);
    border-radius: 18px;
    box-shadow: 0 16px 40px rgba(15, 28, 52, 0.05);
}
.chart-card h2 {
    margin: 0 0 18px;
    font-size: 1.2rem;
}
.chart-legend {
    display: flex;
    gap: 18px;
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    color: #0f4c81;
}
.legend-color {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    display: inline-block;
}
.legend-color.faturuar {
    background: #d93939;
}
.legend-color.inkasuar {
    background: #219653;
}
.column-chart {
    display: flex;
    gap: 18px;
    overflow-x: auto;
    padding-bottom: 10px;
}
.column-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 110px;
}
.column-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    min-height: 240px;
    padding: 12px 0 0;
    border-left: 1px solid #e4e9ee;
    border-bottom: 1px solid #e4e9ee;
}
.column-bar {
    width: 36px;
    border-radius: 8px 8px 0 0;
    background: #d93939;
    transition: opacity 0.2s ease;
}
.column-bar.inkasuar {
    background: #219653;
}
.column-label {
    margin-top: 12px;
    font-weight: 700;
    color: #0f4c81;
}
.column-percent {
    margin-top: 4px;
    font-size: 0.9rem;
    color: #4d5769;
}
.pagination {
    margin: 24px 0 0;
    text-align: center;
}
.pagination ul {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.pagination li {
}
.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid #d9e2ec;
    text-decoration: none;
    color: #0f4c81;
    background: #fff;
}
.pagination a:hover {
    background: #eff4fb;
}
.pagination li.active span {
    background: #0f4c81;
    color: #fff;
    border-color: #0f4c81;
}
.summary-row td {
    font-weight: 700;
    background: #f5f7fa;
}
.success {
    margin: 18px 0;
    padding: 16px;
    background: #e6f7e8;
    border: 1px solid #9ed4a7;
    color: #1d6a2a;
    border-radius: 12px;
}
.error {
    margin: 18px 0;
    padding: 16px;
    background: #ffe4e1;
    border: 1px solid #f0b4b1;
    color: #8b1a1a;
    border-radius: 12px;
}
footer {
    text-align: center;
    padding: 22px 16px;
    color: #5c6975;
}

/* New styles for invoice management features */
.form-container {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    margin: 24px 0;
    box-shadow: 0 2px 8px rgba(15, 28, 52, 0.08);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 16px;
    align-items: end;
}
.filter-form .form-buttons {
    margin-top: 0;
}

.edit-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.edit-form h2 {
    margin-top: 0;
    color: #0f4c81;
    font-size: 1.4rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-weight: 600;
    color: #1a2940;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 10px 14px;
    border: 1px solid #d0d7e0;
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #0f4c81;
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-buttons {
    display: flex;
    gap: 12px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.form-buttons button,
.form-buttons a {
    flex: 1;
    padding: 11px 16px;
    text-align: center;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

.form-buttons button {
    background: #0f4c81;
    color: #fff;
}

.form-buttons button:hover {
    background: #0a3454;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(15, 76, 129, 0.25);
}

.form-buttons a {
    background: #e0e7f1;
    color: #1a2940;
}

.form-buttons a:hover {
    background: #d0d7e0;
}

.delete-btn {
    background: #d32f2f !important;
    color: #fff !important;
}

.delete-btn:hover {
    background: #b71c1c !important;
}

.success {
    margin: 18px 0;
    padding: 16px;
    background: #e8f5e9;
    border: 1px solid #c8e6c9;
    color: #2e7d32;
    border-radius: 12px;
}

details {
    margin: 8px 0;
    padding: 8px;
    background: #f5f5f5;
    border-radius: 4px;
}

details summary {
    cursor: pointer;
    font-weight: 600;
    color: #0f4c81;
}

details pre {
    background: #fff;
    padding: 12px;
    border-radius: 4px;
    overflow-x: auto;
    font-size: 0.85rem;
    margin: 8px 0 0 0;
}

.invoice-print {
    background: #fff;
    border: none;
    border-radius: 0;
    padding: 0;
    max-width: 100%;
    margin: 0;
}
@media print {
    @page { size: A4; margin: 20mm; }
    body { margin: 0; padding: 0; background: #fff; }
    .invoice-print { margin: 0; border: none; border-radius: 0; padding: 0; max-width: none; }
    .page-header, header, footer, .button-link, [onclick*="print"] { display: none !important; }
}
.invoice-header {
    background: #0f4c81;
    color: #fff;
    padding: 18px 20px;
    border-radius: 0;
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: center;
}
.invoice-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.invoice-brand img {
    height: 60px;
    width: auto;
    background: rgba(255,255,255,0.12);
    padding: 6px;
    border-radius: 8px;
}
.invoice-logo-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.12);
    color: #fff;
    padding: 10px 8px;
    border-radius: 8px;
    font-size: 0.75rem;
}
.invoice-brand-name {
    font-size: 1rem;
    font-weight: 700;
}
.invoice-brand-tagline {
    font-size: 0.75rem;
    color: #dceaf6;
    margin-top: 3px;
}
.invoice-title {
    text-align: right;
}
.invoice-title h2 {
    margin: 0 0 4px;
    color: #fff;
    font-size: 1.75rem;
}
.invoice-title p {
    margin: 0;
    color: #dceaf6;
    font-size: 0.82rem;
}
.invoice-grid {
    width: 100%;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 18px;
}
.invoice-box {
    width: 47%;
    vertical-align: top;
    background: #f7f9fb;
    border: 1px solid #d8dee4;
    border-radius: 0;
    padding: 14px;
    min-height: 100px;
}
.invoice-grid-gap {
    width: 6%;
}
.invoice-box h3 {
    margin: 0 0 10px;
    color: #0f4c81;
    font-size: 0.95rem;
}
.invoice-detail-table {
    width: 100%;
    min-width: 0;
    table-layout: fixed;
    border-collapse: collapse;
    margin-top: 18px;
    background: #fff;
}
.invoice-detail-table th {
    background: #f1f5f9;
    color: #14233c;
    text-align: left;
    padding: 10px;
    border-bottom: 1px solid #d8dee4;
    font-size: 0.82rem;
}
.invoice-detail-table td {
    padding: 10px;
    border-bottom: 1px solid #eef2f5;
    vertical-align: top;
    font-size: 0.82rem;
}
.invoice-description {
    width: 68%;
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
}
.invoice-amount {
    width: 16%;
    text-align: right;
    white-space: nowrap;
}
.invoice-bottom {
    display: table;
    width: 100%;
    margin-top: 20px;
}
.invoice-qr {
    display: table-cell;
    width: 45%;
    vertical-align: top;
}
.invoice-qr img {
    width: 100px;
    height: 100px;
    border: 1px solid #d8dee4;
    padding: 6px;
    background: #fff;
}
.invoice-qr div {
    margin-top: 6px;
    color: #5c6975;
    font-size: 0.75rem;
}
.invoice-totals {
    display: table-cell;
    width: 40%;
    vertical-align: top;
    background: #f7f9fb;
    border: 1px solid #d8dee4;
    border-radius: 0;
    padding: 14px;
}
.invoice-totals p {
    margin: 0 0 8px;
    font-size: 0.82rem;
}
.invoice-totals strong {
    float: right;
}
.invoice-balance {
    border-top: 1px solid #d8dee4;
    padding-top: 9px;
    margin-top: 9px !important;
    color: #0f4c81;
    font-size: 0.95rem;
    font-weight: 700;
}
.invoice-footer {
    margin-top: 20px;
    color: #5c6975;
    font-size: 0.75rem;
}

.login-panel {
    width: min(440px, 100%);
    margin: 48px auto;
    padding: 28px;
    background: #fff;
    border: 1px solid rgba(15, 28, 52, 0.08);
    border-radius: 16px;
    box-shadow: 0 18px 50px rgba(15, 28, 52, 0.1);
}
.login-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 22px;
}
.login-brand img {
    width: 64px;
    height: auto;
    border-radius: 12px;
    background: #eff4fb;
    padding: 8px;
}
.login-brand h2 {
    margin: 0 0 4px;
    color: #0f4c81;
    font-size: 1.45rem;
}
.login-brand p {
    margin: 0;
    color: #5c6975;
    font-weight: 700;
}
.login-form,
.user-form {
    display: grid;
    gap: 16px;
}
.form-row {
    display: grid;
    gap: 7px;
}
.form-row label {
    color: #1a2940;
    font-weight: 700;
}
.form-row input[type="text"],
.form-row input[type="password"] {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid #d0d7e0;
    border-radius: 8px;
    font-size: 1rem;
}
.form-row input:focus {
    outline: none;
    border-color: #0f4c81;
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}
.form-row button,
.user-list-card button {
    padding: 10px 16px;
    background: #0f4c81;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
}
.form-row button:hover,
.user-list-card button:hover {
    background: #0a3454;
}
.checkbox-row label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.users-layout {
    display: grid;
    grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}
.user-form-card,
.user-list-card {
    background: #fff;
    border: 1px solid rgba(15, 28, 52, 0.08);
    border-radius: 14px;
    box-shadow: 0 14px 42px rgba(15, 28, 52, 0.06);
    padding: 22px;
}
.user-list-card td:last-child {
    white-space: nowrap;
}

@media print {
    body {
        background: #fff;
        color: #000;
    }
    header, nav, .form-buttons, .button-link, .pagination, footer {
        display: none !important;
    }
    .page-header h1 {
        font-size: 1.8rem;
    }
    main {
        margin: 0;
        padding: 0;
    }
    .form-container, .table-wrapper, .chart-card {
        box-shadow: none;
        border: none;
        background: transparent;
    }
    table, th, td {
        border: 1px solid #000 !important;
    }
    .table-wrapper {
        overflow: visible;
    }
    .form-container {
        padding: 0;
    }
}

@media (max-width: 780px) {
    header {
        flex-direction: column;
        align-items: stretch;
    }
    nav ul {
        justify-content: center;
    }
    .search-form {
        flex-direction: column;
    }
    .search-form button {
        width: 100%;
    }
    .column-chart {
        overflow-x: auto;
    }
    .form-buttons {
        flex-direction: column;
    }
    .form-buttons a,
    .form-buttons button {
        width: 100%;
    }
    .users-layout {
        grid-template-columns: 1fr;
    }
    .login-panel {
        margin: 24px auto;
    }
    .invoice-header,
    .invoice-bottom {
        flex-direction: column;
    }
    .invoice-title {
        text-align: left;
    }
    .invoice-totals {
        width: 100%;
    }
}

.action-buttons {
    white-space: nowrap;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: #f1f5f9;
    color: #334155;
    text-decoration: none;
    border: 1px solid #cbd5e1;
    vertical-align: middle;
}

.icon-button:hover {
    background: #e2e8f0;
    color: #0f172a;
}

.icon-button.delete-btn {
    color: #b91c1c;
    background: #fee2e2;
    border-color: #fecaca;
}

.icon-button.delete-btn:hover {
    background: #fecaca;
    color: #7f1d1d;
}

.icon-button svg {
    display: block;
}
button.icon-button { cursor: pointer; padding: 0; }
.icon-button .icon-svg { display: inline-flex; }

.selected-client-note {
    margin: 16px 0 0;
    padding: 12px 14px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    color: #1e3a8a;
    font-weight: 600;
}

.list-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin: 16px 0;
    padding: 12px 14px;
    background: #fff;
    border: 1px solid #d8dee4;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(15, 28, 52, 0.06);
}

.rows-form,
.export-buttons {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.rows-form label {
    font-weight: 700;
    color: #1a2940;
}

.rows-form select {
    padding: 8px 10px;
    border: 1px solid #d0d7e0;
    border-radius: 8px;
    background: #fff;
}

.small-button {
    padding: 8px 12px;
    font-size: 0.9rem;
}

.list-count {
    color: #5c6975;
    font-weight: 700;
}

.user-list-card .list-toolbar {
    margin-top: 0;
}