/* 
 * WMS Mobile Layout Framework
 * Database Transaction Safe - Uses DOM parsing and page reloads only
 * No persistent connections or background API calls
 */

/* Mobile-First Base Styles */
:root {
    /* Mobile touch targets */
    --mobile-touch-target: 44px;
    --mobile-touch-target-large: 56px;
    
    /* Mobile spacing */
    --mobile-padding: 1rem;
    --mobile-padding-small: 0.5rem;
    --mobile-padding-large: 1.5rem;
    
    /* Mobile typography */
    --mobile-font-small: 0.875rem;
    --mobile-font-base: 1rem;
    --mobile-font-large: 1.125rem;
    --mobile-font-xl: 1.25rem;
    
    /* Mobile shadows */
    --mobile-shadow-small: 0 1px 3px rgba(0, 0, 0, 0.1);
    --mobile-shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.12);
    --mobile-shadow-large: 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* Mobile z-index stack */
    --mobile-z-bottom-nav: 1050;
    --mobile-z-modal: 1060;
    --mobile-z-toast: 1070;
}

/* Mobile Container */
.mobile-container {
    width: 100%;
    padding: var(--mobile-padding);
    margin: 0 auto;
    max-width: 100vw;
    overflow-x: hidden;
    background-color: var(--bg-primary, #f9fafb);
}

/* Mobile Content Area - Specific padding handled in mobile media query */
.mobile-content {
    min-height: 100vh;
    background-color: var(--bg-primary, #f9fafb);
    padding: var(--mobile-padding);
}

/* Mobile Safe Areas (for devices with notches) */
.mobile-safe-top {
    padding-top: env(safe-area-inset-top);
}

.mobile-safe-bottom {
    padding-bottom: env(safe-area-inset-bottom);
}

.mobile-safe-left {
    padding-left: env(safe-area-inset-left);
}

.mobile-safe-right {
    padding-right: env(safe-area-inset-right);
}

/* Mobile Header */
.mobile-header {
    position: sticky;
    top: 0;
    background-color: var(--navbar-bg);
    color: var(--navbar-text);
    padding: var(--mobile-padding-small) var(--mobile-padding);
    z-index: var(--mobile-z-bottom-nav);
    box-shadow: var(--mobile-shadow-small);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--mobile-touch-target-large);
}

.mobile-header-title {
    font-size: var(--mobile-font-large);
    font-weight: 600;
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.mobile-header-actions {
    display: flex;
    gap: var(--mobile-padding-small);
    align-items: center;
}

/* Mobile Touch Targets */
.mobile-touch-target {
    min-height: var(--mobile-touch-target);
    min-width: var(--mobile-touch-target);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    outline: none;
}

.mobile-touch-target-large {
    min-height: var(--mobile-touch-target-large);
    min-width: var(--mobile-touch-target-large);
}

/* Mobile Button Styles */
.mobile-btn {
    min-height: var(--mobile-touch-target);
    padding: var(--mobile-padding-small) var(--mobile-padding);
    border-radius: 8px;
    font-size: var(--mobile-font-base);
    font-weight: 500;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--mobile-padding-small);
    transition: all 0.2s ease;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

.mobile-btn-primary {
    background-color: var(--primary-600);
    color: white;
}

.mobile-btn-primary:hover,
.mobile-btn-primary:active {
    background-color: var(--primary-700);
    color: white;
    text-decoration: none;
}

.mobile-btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.mobile-btn-secondary:hover,
.mobile-btn-secondary:active {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    text-decoration: none;
}

.mobile-btn-danger {
    background-color: #dc3545;
    color: white;
}

.mobile-btn-danger:hover,
.mobile-btn-danger:active {
    background-color: #c82333;
    color: white;
    text-decoration: none;
}

.mobile-btn-large {
    min-height: var(--mobile-touch-target-large);
    padding: var(--mobile-padding) var(--mobile-padding-large);
    font-size: var(--mobile-font-large);
}

.mobile-btn-small {
    min-height: 36px;
    padding: var(--mobile-padding-small);
    font-size: var(--mobile-font-small);
}

.mobile-btn-full {
    width: 100%;
}

/* Mobile Form Elements */
.mobile-input {
    min-height: var(--mobile-touch-target);
    padding: var(--mobile-padding-small) var(--mobile-padding);
    font-size: var(--mobile-font-base);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--input-text);
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
}

.mobile-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.mobile-select {
    min-height: var(--mobile-touch-target);
    padding: var(--mobile-padding-small) var(--mobile-padding);
    font-size: var(--mobile-font-base);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--input-text);
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.mobile-textarea {
    min-height: calc(var(--mobile-touch-target) * 2);
    padding: var(--mobile-padding-small) var(--mobile-padding);
    font-size: var(--mobile-font-base);
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background-color: var(--input-bg);
    color: var(--input-text);
    width: 100%;
    resize: vertical;
    font-family: inherit;
}

/* Mobile Form Groups */
.mobile-form-group {
    margin-bottom: var(--mobile-padding);
}

.mobile-form-label {
    display: block;
    font-size: var(--mobile-font-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--mobile-padding-small);
}

.mobile-form-required {
    color: #dc3545;
    margin-left: 2px;
}

.mobile-form-help {
    font-size: var(--mobile-font-small);
    color: var(--text-secondary);
    margin-top: var(--mobile-padding-small);
}

.mobile-form-error {
    font-size: var(--mobile-font-small);
    color: #dc3545;
    margin-top: var(--mobile-padding-small);
}

/* Mobile Loading States */
.mobile-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--mobile-padding-large);
}

.mobile-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid var(--border-color);
    border-top: 2px solid var(--primary-600);
    border-radius: 50%;
    animation: mobile-spin 1s linear infinite;
}

@keyframes mobile-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile Skeleton Loading */
.mobile-skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-primary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: mobile-skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes mobile-skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.mobile-skeleton-text {
    height: 1rem;
    margin-bottom: var(--mobile-padding-small);
}

.mobile-skeleton-text:last-child {
    margin-bottom: 0;
    width: 60%;
}

.mobile-skeleton-title {
    height: 1.5rem;
    margin-bottom: var(--mobile-padding);
}

/* Mobile Error States */
.mobile-error {
    padding: var(--mobile-padding);
    background-color: #fee;
    border: 1px solid #fcc;
    border-radius: 8px;
    color: #c33;
    text-align: center;
}

.mobile-success {
    padding: var(--mobile-padding);
    background-color: #efe;
    border: 1px solid #cfc;
    border-radius: 8px;
    color: #363;
    text-align: center;
}

.mobile-warning {
    padding: var(--mobile-padding);
    background-color: #ffc;
    border: 1px solid #ffb;
    border-radius: 8px;
    color: #663;
    text-align: center;
}

.mobile-info {
    padding: var(--mobile-padding);
    background-color: #eef;
    border: 1px solid #ccf;
    border-radius: 8px;
    color: #336;
    text-align: center;
}

/* Mobile Responsive Utilities */
.mobile-hide {
    display: none !important;
}

.mobile-show {
    display: block !important;
}

.mobile-show-flex {
    display: flex !important;
}

.mobile-show-inline {
    display: inline !important;
}

.mobile-show-inline-flex {
    display: inline-flex !important;
}

/* Mobile Text Utilities */
.mobile-text-center {
    text-align: center;
}

.mobile-text-left {
    text-align: left;
}

.mobile-text-right {
    text-align: right;
}

.mobile-text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mobile-text-wrap {
    word-wrap: break-word;
    word-break: break-word;
}

/* Mobile Spacing Utilities */
.mobile-mt-1 { margin-top: var(--mobile-padding-small); }
.mobile-mt-2 { margin-top: var(--mobile-padding); }
.mobile-mt-3 { margin-top: var(--mobile-padding-large); }

.mobile-mb-1 { margin-bottom: var(--mobile-padding-small); }
.mobile-mb-2 { margin-bottom: var(--mobile-padding); }
.mobile-mb-3 { margin-bottom: var(--mobile-padding-large); }

.mobile-p-1 { padding: var(--mobile-padding-small); }
.mobile-p-2 { padding: var(--mobile-padding); }
.mobile-p-3 { padding: var(--mobile-padding-large); }

/* Desktop Override - Hide mobile styles on desktop */
@media (min-width: 992px) {
    .mobile-only {
        display: none !important;
    }
    
    .mobile-header {
        display: none !important;
    }
}

/* Mobile Only - Show mobile styles only on mobile */
@media (max-width: 991px) {
    .desktop-only {
        display: none !important;
    }
    
    /* Ensure mobile content takes full space */
    .content-wrapper {
        margin-left: 0 !important;
        margin-top: 0 !important;
    }
    
    /* Apply mobile content padding on mobile devices */
    .content-wrapper.mobile-content {
        padding-top: calc(var(--mobile-touch-target-large) + var(--mobile-padding-large) + env(safe-area-inset-top, 0px)) !important;
        padding-left: var(--mobile-padding) !important;
        padding-right: var(--mobile-padding) !important;
        padding-bottom: calc(var(--mobile-touch-target-large) + var(--mobile-padding)) !important;
    }
    
    /* Hide desktop sidebar */
    .sidebar {
        display: none !important;
    }
    
    /* Hide desktop navbar on mobile */
    .navbar {
        display: none !important;
    }
}

/* Touch improvements */
@media (hover: none) and (pointer: coarse) {
    /* Remove hover effects on touch devices */
    .mobile-btn:hover {
        transform: none;
    }
    
    /* Increase touch targets slightly on small screens */
    .mobile-touch-target {
        min-height: calc(var(--mobile-touch-target) + 4px);
        min-width: calc(var(--mobile-touch-target) + 4px);
    }
}

/* High DPI displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .mobile-skeleton {
        background-size: 100% 100%;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    .mobile-spinner,
    .mobile-skeleton {
        animation: none;
    }
    
    .mobile-btn {
        transition: none;
    }
}

/* Focus visible for keyboard navigation */
.mobile-btn:focus-visible,
.mobile-input:focus-visible,
.mobile-select:focus-visible,
.mobile-textarea:focus-visible {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

/* Text color utilities for better readability */
small, .mobile-text-small {
    color: var(--text-secondary, #6b7280) !important;
    font-size: var(--mobile-font-small, 0.875rem);
}

.text-muted {
    color: var(--text-secondary, #9ca3af) !important;
}

/* Ensure good contrast on mobile */
@media (max-width: 991px) {
    body {
        background-color: var(--bg-primary, #f9fafb);
    }

    .d-lg-none {
        background-color: var(--bg-primary, #f9fafb);
        min-height: 100vh;
    }
}