body {
    margin: 0;
    background: #f5f8fb;
    font-family: Arial, sans-serif;
}

.container {
    max-width: 1000px;
    margin: 50px auto;
    padding: 20px;
}

.card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,.08);
    padding: 40px;
}

.logo {
    width: 100px;
    display: block;
    margin: 0 auto 20px;
}

h1 {
    text-align: center;
    color: #0b6db7;
    margin-bottom: 5px;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
}

.password-box {
    max-width: 400px;
    margin: auto;
}

input[type=password] {
    width: 100%;
    padding: 14px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-sizing: border-box;
}

button {
    width: 100%;
    margin-top: 15px;
    padding: 14px;
    border: 0;
    background: #0b6db7;
    color: #fff;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background: #095a97;
}

.error {
    color: red;
    text-align: center;
    margin-bottom: 15px;
}

.logout {
    float: right;
    text-decoration: none;
    color: #0b6db7;
    font-weight: bold;
}

.file-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(280px,1fr));
    gap: 20px;
    margin-top: 30px;
}

.file-card {
    background: #fff;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 3px 15px rgba(0,0,0,.08);
}

.file-card h3 {
    margin-top: 0;
    color: #0b6db7;
}

.download-btn {
    display: inline-block;
    background: #0b6db7;
    color: #fff;
    text-decoration: none;
    padding: 10px 15px;
    border-radius: 6px;
    margin-top: 10px;
}

.download-btn:hover {
    background: #095a97;
}

@media(max-width: 700px) {
    .container {
        margin: 20px auto;
        padding: 12px;
    }

    .card {
        padding: 25px 18px;
        border-radius: 12px;
    }

    .logout {
        float: none;
        display: block;
        text-align: right;
        margin-bottom: 15px;
    }

    .file-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .file-card {
        padding: 18px;
    }

    h1 {
        font-size: 26px;
    }

    .logo {
        width: 85px;
    }

    input[type=password],
    button,
    .download-btn {
        font-size: 16px;
    }
}

.portal-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 20px 0 30px 0;
}

.portal-option {
    display: block;
    text-decoration: none;
    background: #f5f8fb;
    border: 1px solid #d9e8f4;
    border-radius: 10px;
    padding: 16px;
    color: #222;
    text-align: left;
}

.portal-option strong {
    display: block;
    color: #0b6db7;
    font-size: 17px;
    margin-bottom: 6px;
}

.portal-option span {
    display: block;
    color: #666;
    font-size: 14px;
}

.portal-option:hover {
    background: #eaf4fb;
}

label {
    display: block;
    margin-top: 15px;
    margin-bottom: 6px;
    font-weight: bold;
}

input[type=text],
input[type=number] {
    width: 100%;
    padding: 13px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 15px;
}

.quick-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 20px 0;
}

.quick-buttons button {
    width: auto;
    margin-top: 0;
    padding: 10px 14px;
    font-size: 14px;
    border-radius: 7px;
}

.current-invoice-box {
    margin-top: 25px;
    background: #f5f8fb;
    border: 1px solid #d9e8f4;
    border-radius: 10px;
    padding: 15px;
}

.current-invoice-box h3 {
    margin-top: 0;
    color: #0b6db7;
}

.visit-headings,
.visit-row {
    display: grid;
    grid-template-columns: 140px 1fr 100px 80px;
    gap: 8px;
    align-items: center;
}

.visit-headings {
    font-weight: bold;
    color: #555;
    margin-bottom: 8px;
}

.visit-row {
    margin-bottom: 8px;
}

.visit-row input {
    padding: 9px;
}

.remove-btn {
    background: #999;
    padding: 9px;
    font-size: 13px;
    margin-top: 0;
}

.invoice-total-box,
.total-due {
    text-align: right;
    font-size: 24px;
    font-weight: bold;
    color: #0b6db7;
    margin: 25px 0;
}

.invoice-header {
    display: flex;
    justify-content: space-between;
    border-bottom: 2px solid #0b6db7;
    padding-bottom: 20px;
    margin-bottom: 25px;
}

.invoice-logo {
    width: 120px;
}

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

.invoice-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 25px;
}

.invoice-two-col h3,
.payment-box h3 {
    color: #0b6db7;
}

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

.invoice-table th {
    background: #0b6db7;
    color: white;
    padding: 12px;
    text-align: left;
}

.invoice-table td {
    padding: 12px;
    border-bottom: 1px solid #ddd;
}

.invoice-table th:last-child,
.invoice-table td:last-child {
    text-align: right;
}

.payment-box {
    background: #f5f8fb;
    border-radius: 10px;
    padding: 18px;
}

.thanks {
    text-align: center;
    color: #666;
    margin-top: 30px;
}

.invoice-buttons {
    display: flex;
    gap: 10px;
    margin-top: 25px;
}

.invoice-buttons button,
.invoice-buttons a {
    flex: 1;
    text-align: center;
}

@media(max-width: 700px) {
    .visit-row,
.invoice-two-col {
    grid-template-columns: 1fr;
}

.quick-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.quick-buttons button {
    width: 100%;
}

.visit-headings {
    display: none;
}

.visit-row {
    background: white;
    padding: 10px;
    border-radius: 8px;
}

    .invoice-header {
        display: block;
        text-align: center;
    }

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

    .invoice-buttons {
        display: block;
    }

    .invoice-buttons a {
        display: block;
        margin-top: 10px;
    }
}

@media print {
    body {
        background: white;
    }

    .card {
        box-shadow: none;
        border-radius: 0;
    }

    .no-print,
    .logout {
        display: none !important;
    }
}