/* Nautical theme styling */
:root {
    --navy-blue: #003366;
    --light-blue: #aad5e7;
    --seafoam: #b3d9d9;
    --deep-blue: #001f3f;
    --sand: #f5f5dc;
    --rope: #a8835e;
}

body {
    font-family: 'Trebuchet MS', Arial, sans-serif;
    padding-top: 20px;
    padding-bottom: 20px;
    background-color: var(--light-blue);
    background-image: linear-gradient(to bottom, var(--light-blue), #ffffff);
    background-attachment: fixed;
    color: var(--navy-blue);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

h1, h2, h3, h4 {
    color: var(--navy-blue);
    font-weight: bold;
}

h1 {
    border-bottom: 3px solid var(--seafoam);
    padding-bottom: 10px;
    margin-bottom: 30px;
}

/* Logo styling */
.logo {
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 25%;
    max-width: 150px;
    margin-bottom: 20px;
}

/* Form elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-control {
    border: 2px solid var(--seafoam);
    border-radius: 6px;
}

.form-control:focus {
    border-color: var(--navy-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 51, 102, 0.25);
}

label {
    font-weight: bold;
    color: var(--navy-blue);
}

.btn-custom {
    margin: 5px 0;
}

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

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

.btn-danger {
    background-color: #8b0000;
    border-color: #8b0000;
}

.btn-success {
    background-color: #28724f;
    border-color: #28724f;
}

/* Card styling */
.card {
    border-color: var(--seafoam);
    border-radius: 8px;
    overflow: hidden;
}

.card-body {
    background-color: #fff;
}

.card-title {
    color: var(--navy-blue);
    border-bottom: 1px solid var(--seafoam);
    padding-bottom: 8px;
}

/* Table styling */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: white;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(173, 216, 230, 0.2);
}

.thead-dark th {
    background-color: var(--navy-blue) !important;
    color: white;
    border-color: var(--deep-blue);
}

th, td {
    border: 1px solid #dee2e6;
    text-align: left;
    padding: 12px;
}

/* QR code section */
#qr-code {
    margin-top: 30px;
    text-align: center;
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--seafoam);
}

.qr-image, .qr-print-image {
    max-width: 200px;
    margin: 0 auto;
    border: 2px solid var(--seafoam);
    padding: 10px;
    background-color: white;
}

.qr-print-section {
    margin-top: 40px;
    text-align: center;
}

/* Alert messages */
.alert {
    margin-top: 15px;
    border-radius: 6px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        margin: 0 10px;
    }
    
    .logo {
        width: 35%;
    }
    
    h1 {
        font-size: 1.8rem;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .container {
        box-shadow: none;
        padding: 0;
        margin: 0;
        max-width: 100%;
    }
    
    th {
        background-color: #f2f2f2 !important;
        color: black !important;
    }
    
    .table-striped tbody tr:nth-of-type(odd) {
        background-color: #f9f9f9;
    }
}