/* Design System & Visual Overhaul */

:root {
    --primary-color: #3b82f6; /* Modern Blue */
    --primary-dark: #1d4ed8;
    --bg-premium-dark: #0f172a; /* Deep Slate/Navy */
    --bg-light: #f8fafc;
    --text-main: #334155;
    --text-dark: #0f172a;
    --border-color: #e2e8f0;
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    font-size: 1.1rem; /* Increased base font size */
    line-height: 1.6;
}

/* Premium Navbar */
.bg-premium-dark {
    background-color: var(--bg-premium-dark) !important;
}

.navbar-brand {
    font-weight: 800 !important;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
}

.logo-dot {
    height: 8px;
    width: 8px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: inline-block;
    margin-right: 8px;
}

.navbar .nav-link {
    color: #94a3b8 !important;
    transition: color 0.25s ease, transform 0.25s ease;
    font-weight: 600;
}

.navbar .nav-link:hover {
    color: #ffffff !important;
    transform: translateY(-1px);
}

/* Typography & Headers */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark);
    font-weight: 700;
    letter-spacing: -0.5px;
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
}

/* Premium Card Styles */
.card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    background-color: #ffffff;
    font-weight: 700;
    padding: 1.25rem 1.5rem;
}

/* Increased sizing for Form Controls */
.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.form-control, .form-select {
    padding: 0.75rem 1rem; /* Larger padding */
    font-size: 1.05rem; /* Larger input text */
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-dark);
    background-color: #ffffff;
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

.form-control[readonly] {
    background-color: #f1f5f9;
    border-color: var(--border-color);
}

/* Elegant Spacious Tables */
.table {
    font-size: 1.05rem;
    margin-bottom: 0;
}

.table th {
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    padding: 1rem 1.25rem !important;
    background-color: #f8fafc !important;
    color: #475569;
}

.table td {
    padding: 1.1rem 1.25rem !important; /* Larger cell padding */
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

/* Premium Buttons */
.btn {
    padding: 0.7rem 1.5rem;
    font-weight: 700;
    border-radius: var(--border-radius-md);
    transition: all 0.2s ease;
    font-size: 1.05rem;
}

.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1.15rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

/* Dynamic Invoice Grid */
.invoice-grid input, .invoice-grid select, .invoice-grid textarea {
    font-size: 1.15rem;
    padding: 0.7rem 0.9rem;
    border-radius: var(--border-radius-md);
}

.invoice-grid .item-select {
    min-width: 400px;
}

.invoice-grid .qty {
    min-width: 110px;
}

.invoice-grid .lot-no,
.invoice-grid .pdc-no,
.invoice-grid .process {
    min-width: 110px;
}

.invoice-grid .item-details {
    min-width: 350px;
    height: 75px;
    font-size: 1.15rem;
    line-height: 1.4;
    resize: vertical;
}

/* Total Box Card styling */
.total-box {
    max-width: 400px;
    margin-left: auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    border-radius: var(--border-radius-md);
    background: #ffffff;
}

.total-box div {
    padding: 0.5rem 0;
    font-size: 1.1rem;
}

/* Floating Actions / Layout Enhancements */
.mt-3 {
    margin-top: 2rem !important;
}

/* Printable Challan Styles */
@media print {
    body {
        background-color: #ffffff !important;
        font-size: 10pt !important;
        color: #000000 !important;
    }
    
    .navbar, 
    .btn, 
    .no-print, 
    footer,
    a.btn {
        display: none !important;
    }

    .container {
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }

    .challan-print-container {
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
        margin: 0 !important;
    }
}

/* High Fidelity Challan Layout styling */
.challan-print-container {
    background-color: #ffffff;
    max-width: 900px;
    margin: 0 auto;
    font-family: Arial, sans-serif;
    color: #000;
}

.challan-table-header {
    border: 1px solid #000;
    border-collapse: collapse;
    width: 100%;
}

.challan-table-header td {
    border: 1px solid #000;
    padding: 10px;
    vertical-align: top;
}

.challan-grid {
    width: 100%;
    border-collapse: collapse;
    margin-top: -1px;
}

.challan-grid th, .challan-grid td {
    border: 1px solid #000;
    padding: 6px 8px;
    font-size: 11px;
    text-align: left;
}

.challan-grid th {
    text-align: center;
    background-color: transparent !important;
    color: #000;
}

.challan-footer-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: -1px;
}

.challan-footer-table td {
    border: 1px solid #000;
    padding: 10px;
    vertical-align: top;
    font-size: 11px;
}