/* ========================================
   Mobile Responsive CSS for QMS Application
   ======================================== */

/* Base Responsive Utilities */
* {
    box-sizing: border-box;
}

/* Mobile-First Approach - Base styles for mobile */
:root {
    --mobile-padding: 15px;
    --touch-target-size: 44px;
}

/* Responsive Container */
.content {
    padding: var(--mobile-padding);
}

/* ========================================
   Mobile Navigation (< 768px)
   ======================================== */
@media (max-width: 767px) {

    /* Header adjustments */
    header {
        padding: 10px 15px;
    }

    header .logo {
        font-size: 18px;
    }

    /* Hamburger Menu Button */
    .mobile-menu-toggle {
        display: block;
        background: none;
        border: none;
        color: white;
        font-size: 24px;
        cursor: pointer;
        padding: 8px;
        min-width: var(--touch-target-size);
        min-height: var(--touch-target-size);
    }

    /* Hide desktop navigation on mobile */
    nav {
        display: none;
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: #1f2937;
        z-index: 1000;
        max-height: calc(100vh - 60px);
        overflow-y: auto;
    }

    nav.mobile-active {
        display: block;
    }

    /* Stack navigation items vertically */
    nav .dropdown {
        display: block;
        width: 100%;
        border-bottom: 1px solid #374151;
    }

    nav .dropdown button {
        width: 100%;
        text-align: left;
        padding: 15px;
        border-radius: 0;
    }

    nav .dropdown-content {
        position: static;
        display: none;
        box-shadow: none;
        background: #374151;
    }

    nav .dropdown.active .dropdown-content {
        display: block;
    }

    nav .dropdown-content a {
        padding: 12px 25px;
        border-bottom: 1px solid #4b5563;
    }

    /* Nested submenus */
    .dropdown-submenu {
        display: block;
    }

    .dropdown-submenu>a {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .dropdown-submenu .dropdown-content {
        background: #4b5563;
        padding-left: 15px;
    }
}

/* ========================================
   Forms & Inputs
   ======================================== */
@media (max-width: 767px) {

    /* Make all form inputs full width */
    .form-input,
    input[type="text"],
    input[type="email"],
    input[type="number"],
    input[type="date"],
    select,
    textarea {
        width: 100% !important;
        max-width: 100%;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    /* Stack form groups vertically */
    .form-group {
        margin-bottom: 15px;
    }

    /* Two-column layouts become single column */
    [style*="grid-template-columns"] {
        grid-template-columns: 1fr !important;
    }

    [style*="display: grid"] {
        gap: 15px !important;
    }
}

/* ========================================
   Tables
   ======================================== */
@media (max-width: 767px) {

    /* Make tables scrollable horizontally */
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin: 0 -15px;
        padding: 0 15px;
    }

    table {
        min-width: 600px;
        font-size: 14px;
    }

    table th,
    table td {
        padding: 8px;
        white-space: nowrap;
    }

    /* Adjust action buttons in tables */
    table td .btn {
        padding: 6px 10px;
        font-size: 14px;
    }
}

/* ========================================
   Buttons
   ======================================== */
@media (max-width: 767px) {

    /* Touch-friendly button sizes */
    .btn {
        min-height: var(--touch-target-size);
        min-width: var(--touch-target-size);
        padding: 12px 16px;
        font-size: 16px;
    }

    .btn-small {
        min-height: 38px;
        min-width: 38px;
        padding: 8px 12px;
    }

    /* Stack buttons vertically on mobile */
    [style*="display: flex"][style*="gap"] {
        flex-direction: column;
        width: 100%;
    }

    [style*="display: flex"][style*="gap"] .btn,
    [style*="display: flex"][style*="gap"] a {
        width: 100%;
    }
}

/* ========================================
   Sales Invoice List Page
   ======================================== */
@media (max-width: 767px) {

    /* Stack search and filter inputs */
    .sales-invoice-filters {
        flex-direction: column !important;
    }

    .sales-invoice-filters form {
        flex-direction: column !important;
        width: 100% !important;
    }

    .sales-invoice-filters form>div {
        width: 100% !important;
        max-width: 100% !important;
    }

    /* Stack action buttons */
    .sales-invoice-filters>div:last-child {
        flex-direction: column !important;
        width: 100%;
    }
}

/* ========================================
   Sales Invoice Form
   ======================================== */
@media (max-width: 767px) {

    /* Single column layout for form sections */
    .invoice-form-grid {
        grid-template-columns: 1fr !important;
    }

    /* Line items table */
    #lineItemsTable {
        font-size: 14px;
    }

    #lineItemsTable th,
    #lineItemsTable td {
        padding: 6px 4px;
    }

    /* VAT breakdown - stack vertically */
    .vat-breakdown {
        grid-template-columns: 1fr !important;
    }
}

/* ========================================
   Quotation Page Responsive Styles
   ======================================== */
@media (max-width: 767px) {

    /* Main 2-column layout becomes single column */
    #quotation-form>div[style*="grid-template-columns: 2fr 1fr"] {
        display: block !important;
        grid-template-columns: 1fr !important;
    }

    /* Alternative: target by display grid */
    #quotation-form>div[style*="display: grid"] {
        display: block !important;
    }

    /* Basic Information section - all grids become single column */
    form div[style*="grid-template-columns: repeat(2, 1fr)"] {
        grid-template-columns: 1fr !important;
    }

    /* Customer info grid */
    #customer-info-body {
        grid-template-columns: 1fr !important;
    }

    /* Item entry area grids */
    #item-entry-area div[style*="grid-template-columns: 3fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    #item-entry-area div[style*="grid-template-columns: 1fr 1fr 1fr 1fr"] {
        grid-template-columns: 1fr 1fr !important;
    }

    /* Summary table scrollable */
    #summary-list-container>div[style*="overflow-x"] {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }

    /* Financial summary no sticky on mobile */
    div[style*="position: sticky"] {
        position: relative !important;
        top: auto !important;
    }

    /* New customer modal */
    #new-customer-form div[style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr !important;
    }

    /* Reduce padding on white containers for mobile */
    div[style*="background: white"][style*="padding: 1.5rem"] {
        padding: 0.75rem !important;
    }

    /* Fix container overflow issues */
    #quotation-form {
        overflow-x: hidden !important;
        max-width: 100% !important;
        width: 100% !important;
    }

    #quotation-form>div {
        max-width: 100% !important;
        overflow-x: hidden !important;
        margin: 0 !important;
    }

    /* Fix all white background containers */
    #quotation-form div[style*="background: white"] {
        margin-left: 0 !important;
        margin-right: 0 !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        width: 100% !important;
    }

    /* Ensure all form inputs don't overflow */
    #quotation-form input,
    #quotation-form select,
    #quotation-form textarea {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Fix search results dropdown width */
    .search-results-dropdown {
        max-width: calc(100vw - 30px) !important;
        left: 0 !important;
        right: 0 !important;
    }

    /* Fix customer search input specifically */
    #customer-lookup {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 2.5rem !important;
        padding-right: 0.75rem !important;
    }

    /* Fix the parent div of customer lookup */
    #customer-lookup+i {
        left: 12px !important;
    }

    /* Fix all inputs with specific IDs */
    #product-lookup,
    input[type="text"],
    input[type="number"],
    input[type="date"] {
        width: 100% !important;
        max-width: 100% !important;
    }

    /* Fix customer info section */
    #customer-info-fields {
        margin: 0 !important;
        max-width: 100% !important;
        width: 100% !important;
    }

    /* Ensure content div has proper padding */
    .content {
        padding: 10px !important;
        overflow-x: hidden !important;
    }

    /* Prevent horizontal scroll on body */
    body {
        overflow-x: hidden !important;
    }
}

/* ========================================
   Quotation List Page Responsive Styles
   ======================================== */
@media (max-width: 767px) {

    /* Make quotation list filters stack vertically */
    form[method="GET"] {
        flex-direction: column !important;
        width: 100%;
    }

    form[method="GET"]>div {
        width: 100% !important;
    }

    /* Hide table on mobile, show cards instead */
    .table-container table {
        display: none !important;
    }

    /* Mobile card layout for quotations */
    .quotation-mobile-card {
        background: white;
        border-radius: 8px;
        padding: 1rem;
        margin-bottom: 1rem;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }

    .quotation-mobile-card .card-header {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        margin-bottom: 0.75rem;
        padding-bottom: 0.75rem;
        border-bottom: 1px solid #e5e7eb;
    }

    .quotation-mobile-card .card-number {
        font-weight: 700;
        font-size: 1.125rem;
        color: #111827;
    }

    .quotation-mobile-card .card-status {
        display: inline-block;
        padding: 4px 10px;
        border-radius: 9999px;
        font-size: 0.75rem;
        font-weight: 600;
    }

    .quotation-mobile-card .card-body {
        margin-bottom: 0.75rem;
    }

    .quotation-mobile-card .card-row {
        display: flex;
        justify-content: space-between;
        padding: 0.5rem 0;
        border-bottom: 1px solid #f3f4f6;
    }

    .quotation-mobile-card .card-row:last-child {
        border-bottom: none;
    }

    .quotation-mobile-card .card-label {
        font-weight: 600;
        color: #6b7280;
        font-size: 0.875rem;
    }

    .quotation-mobile-card .card-value {
        color: #111827;
        font-size: 0.875rem;
        text-align: right;
    }

    .quotation-mobile-card .card-actions {
        display: flex;
        gap: 0.5rem;
        justify-content: flex-end;
        padding-top: 0.75rem;
        border-top: 1px solid #e5e7eb;
    }

    .quotation-mobile-card .card-actions .btn-icon {
        min-width: 44px;
        min-height: 44px;
    }
}

/* ========================================
   Tablet Styles (768px - 1023px)
   ======================================== */
@media (min-width: 768px) and (max-width: 1023px) {
    .content {
        padding: 20px;
    }

    /* Show desktop navigation */
    .mobile-menu-toggle {
        display: none;
    }

    nav {
        display: flex !important;
    }

    /* Two-column layouts on tablet */
    [style*="grid-template-columns: 1fr 1fr"] {
        grid-template-columns: 1fr 1fr !important;
    }
}

/* ========================================
   Desktop Styles (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .mobile-menu-toggle {
        display: none;
    }

    nav {
        display: flex !important;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.mobile-only {
    display: none;
}

@media (max-width: 767px) {
    .mobile-only {
        display: block;
    }

    .desktop-only {
        display: none !important;
    }

    /* Hide product list on landing page for mobile */
    .product-list-container,
    div[style*="display: grid"][style*="grid-template-columns: repeat(auto-fill"] {
        display: none !important;
    }
}

/* Prevent text selection on buttons */
.btn,
button {
    -webkit-user-select: none;
    user-select: none;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Improve touch scrolling on iOS */
body {
    -webkit-overflow-scrolling: touch;
}