/* ============================================
   CRM UI RESPONSIVE ENHANCEMENTS
   Premium, Modern, Fully Responsive Design System
   ============================================ */

/* ============================================
   DESIGN SYSTEM TOKENS (CSS Variables)
   ============================================ */
:root {
    /* Color Palette */
    --crm-primary: var(--primary-color, #0d6efd);
    --crm-secondary: var(--secondary-color, #6c757d);
    --crm-success: #198754;
    --crm-danger: #dc3545;
    --crm-warning: #ffc107;
    --crm-info: #0dcaf0;

    /* Text Colors */
    --crm-text-primary: #0f172a;
    --crm-text-secondary: #64748b;
    --crm-text-muted: #94a3b8;
    --crm-text-light: #cbd5e1;

    /* Background Colors */
    --crm-bg-primary: #ffffff;
    --crm-bg-secondary: #f8fafc;
    --crm-bg-tertiary: #f1f5f9;
    --crm-bg-overlay: rgba(0, 0, 0, 0.5);

    /* Border Colors */
    --crm-border-light: #e2e8f0;
    --crm-border-medium: #cbd5e1;
    --crm-border-dark: #94a3b8;

    /* Spacing Scale (Mobile-First) */
    --crm-space-xs: 0.25rem;
    /* 4px */
    --crm-space-sm: 0.5rem;
    /* 8px */
    --crm-space-md: 1rem;
    /* 16px */
    --crm-space-lg: 1.5rem;
    /* 24px */
    --crm-space-xl: 2rem;
    /* 32px */
    --crm-space-2xl: 3rem;
    /* 48px */

    /* Typography Scale */
    --crm-font-family: var(--font-family, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
    --crm-font-size-xs: 0.75rem;
    /* 12px */
    --crm-font-size-sm: 0.875rem;
    /* 14px */
    --crm-font-size-base: 1rem;
    /* 16px */
    --crm-font-size-lg: 1.125rem;
    /* 18px */
    --crm-font-size-xl: 1.25rem;
    /* 20px */
    --crm-font-size-2xl: 1.5rem;
    /* 24px */
    --crm-font-size-3xl: 1.875rem;
    /* 30px */

    /* Font Weights */
    --crm-font-weight-normal: 400;
    --crm-font-weight-medium: 500;
    --crm-font-weight-semibold: 600;
    --crm-font-weight-bold: 700;

    /* Border Radius */
    --crm-radius-sm: 0.375rem;
    /* 6px */
    --crm-radius-md: 0.5rem;
    /* 8px */
    --crm-radius-lg: 0.75rem;
    /* 12px */
    --crm-radius-xl: 1rem;
    /* 16px */
    --crm-radius-2xl: 1.5rem;
    /* 24px */
    --crm-radius-full: 9999px;

    /* Shadows */
    --crm-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --crm-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --crm-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --crm-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --crm-transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --crm-transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --crm-transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index Scale */
    --crm-z-dropdown: 1000;
    --crm-z-sticky: 1020;
    --crm-z-fixed: 1030;
    --crm-z-modal-backdrop: 1040;
    --crm-z-modal: 1050;
    --crm-z-popover: 1060;
    --crm-z-tooltip: 1070;
    --crm-z-sidebar-overlay: 1080;
    --crm-z-sidebar: 1090;

    /* Breakpoints (for reference in JS/media queries) */
    --crm-breakpoint-sm: 640px;
    --crm-breakpoint-md: 768px;
    --crm-breakpoint-lg: 1024px;
    --crm-breakpoint-xl: 1280px;
    --crm-breakpoint-2xl: 1536px;
}

/* ============================================
   GLOBAL RESPONSIVE IMPROVEMENTS
   ============================================ */

/* Prevent horizontal overflow */
/* Prevent horizontal overflow while ensuring vertical scroll works */
html {
    overflow-x: hidden;
    scroll-behavior: smooth;
    width: 100%;
    margin: 0;
    padding: 0;
}

body {
    overflow-x: hidden;
    width: 100%;
    margin: 0;
    padding: 0;
    position: relative;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Base typography improvements */
body {
    font-family: var(--crm-font-family);
    font-size: var(--crm-font-size-base);
    line-height: 1.6;
    color: var(--crm-text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   RESPONSIVE CONTAINER & WRAPPER
   ============================================ */

.premium-wrapper {
    background: var(--crm-bg-secondary);
    min-height: 100vh;
    padding: var(--crm-space-sm) var(--crm-space-md);
    font-family: var(--crm-font-family);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

/* Mobile: Reduce padding */
@media (max-width: 640.98px) {
    .premium-wrapper {
        padding: var(--crm-space-sm) var(--crm-space-sm);
    }
}

/* Tablet: Moderate padding */
@media (min-width: 641px) and (max-width: 1023px) {
    .premium-wrapper {
        padding: var(--crm-space-md) var(--crm-space-lg);
    }
}

/* Desktop: Full padding */
@media (min-width: 1024px) {
    .premium-wrapper {
        padding: var(--crm-space-md) var(--crm-space-xl);
        max-width: 1600px;
        margin: 0 auto;
    }
}

/* ============================================
   RESPONSIVE FORMS
   ============================================ */

/* Form controls - Full width on mobile */
@media (max-width: 640.98px) {

    .form-control,
    .form-select,
    .form-check-input,
    textarea,
    input[type="text"],
    input[type="email"],
    input[type="tel"],
    input[type="number"],
    input[type="date"],
    select {
        width: 100%;
        font-size: var(--crm-font-size-base);
        /* Prevent zoom on iOS */
        min-height: 44px;
        /* Touch-friendly */
        padding: var(--crm-space-sm) var(--crm-space-md);
    }

    /* Form labels */
    .form-label {
        font-size: var(--crm-font-size-sm);
        font-weight: var(--crm-font-weight-medium);
        margin-bottom: var(--crm-space-xs);
        display: block;
    }

    /* Form groups - Stack vertically */
    .row.g-3>[class*="col-"],
    .row.g-2>[class*="col-"],
    .row>[class*="col-md-"],
    .row>[class*="col-lg-"] {
        width: 100%;
        flex: 0 0 100%;
        max-width: 100%;
        margin-bottom: var(--crm-space-md);
    }

    /* Input groups */
    .input-group {
        flex-wrap: wrap;
    }

    .input-group-text {
        min-height: 44px;
        padding: var(--crm-space-sm) var(--crm-space-md);
    }
}

/* Form validation messages */
.validation-message,
.text-danger.small {
    font-size: var(--crm-font-size-xs);
    margin-top: var(--crm-space-xs);
    display: block;
}

/* ============================================
   RESPONSIVE BUTTONS
   ============================================ */

/* Touch-friendly button sizes */
@media (max-width: 640.98px) {

    .btn,
    .premium-btn,
    .premium-btn-outline,
    button:not(.btn-icon-light):not(.btn-icon-switch) {
        min-height: 44px;
        min-width: 44px;
        padding: var(--crm-space-sm) var(--crm-space-lg);
        font-size: var(--crm-font-size-base);
        font-weight: var(--crm-font-weight-semibold);
        border-radius: var(--crm-radius-md);
    }

    /* Button groups - Stack on mobile */
    .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .btn-group>.btn {
        width: 100%;
        border-radius: var(--crm-radius-md);
        margin-bottom: var(--crm-space-sm);
    }

    .btn-group>.btn:last-child {
        margin-bottom: 0;
    }

    /* Icon buttons - Keep compact but touch-friendly */
    .btn-icon-light,
    .btn-icon-switch {
        min-width: 44px;
        min-height: 44px;
        width: 44px;
        height: 44px;
    }
}

/* Button hover states */
.btn:focus-visible,
.premium-btn:focus-visible,
.premium-btn-outline:focus-visible {
    outline: 2px solid var(--crm-primary);
    outline-offset: 2px;
}

/* ============================================
   RESPONSIVE TABLES
   ============================================ */

/* Table wrapper - Horizontal scroll on mobile */
@media (max-width: 767.98px) {
    .table-responsive {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: var(--crm-radius-lg);
        box-shadow: var(--crm-shadow-sm);
    }

    /* Table styling for mobile */
    .premium-table,
    .table {
        min-width: 600px;
        /* Force horizontal scroll if needed */
        font-size: var(--crm-font-size-sm);
    }

    .premium-table thead th,
    .table thead th {
        font-size: var(--crm-font-size-xs);
        padding: var(--crm-space-sm) var(--crm-space-md);
        white-space: nowrap;
    }

    .premium-table tbody td,
    .table tbody td {
        padding: var(--crm-space-sm) var(--crm-space-md);
        white-space: nowrap;
    }

    /* Stacked table alternative (optional - can be enabled per table) */
    .table-stacked {
        display: block;
    }

    .table-stacked thead {
        display: none;
    }

    .table-stacked tbody,
    .table-stacked tr,
    .table-stacked td {
        display: block;
        width: 100%;
    }

    .table-stacked tr {
        border: 1px solid var(--crm-border-light);
        border-radius: var(--crm-radius-md);
        margin-bottom: var(--crm-space-md);
        padding: var(--crm-space-md);
        background: var(--crm-bg-primary);
    }

    .table-stacked td {
        border: none;
        padding: var(--crm-space-xs) 0;
        text-align: left !important;
    }

    .table-stacked td::before {
        content: attr(data-label) ": ";
        font-weight: var(--crm-font-weight-semibold);
        color: var(--crm-text-secondary);
        display: inline-block;
        min-width: 120px;
    }
}

/* Desktop table improvements */
@media (min-width: 768px) {
    .premium-table tbody tr {
        transition: background-color var(--crm-transition-fast);
    }

    .premium-table tbody tr:hover {
        background-color: color-mix(in srgb, var(--crm-primary), transparent 96%);
    }
}

/* ============================================
   RESPONSIVE CARDS
   ============================================ */

/* Card grid - Responsive columns */
@media (max-width: 640.98px) {

    .row-cols-1,
    .row-cols-md-2,
    .row-cols-lg-3 {
        --bs-gutter-x: var(--crm-space-md);
        --bs-gutter-y: var(--crm-space-md);
    }

    .premium-card,
    .stat-card,
    .glass-card {
        margin-bottom: var(--crm-space-md);
    }

    .premium-card {
        padding: var(--crm-space-lg);
    }
}

/* Card header actions - Stack on mobile */
@media (max-width: 640.98px) {
    .card-header .d-flex.justify-content-between {
        flex-direction: column;
        gap: var(--crm-space-md);
        align-items: flex-start !important;
    }

    .card-header .d-flex.gap-2 {
        width: 100%;
        flex-wrap: wrap;
    }
}

/* ============================================
   RESPONSIVE STAT CARDS
   ============================================ */

@media (max-width: 640.98px) {
    .stat-card {
        flex-direction: column;
        text-align: center;
        padding: var(--crm-space-lg);
    }

    .stat-icon {
        margin: 0 auto;
    }

    .stat-info h3 {
        font-size: var(--crm-font-size-2xl);
    }
}

/* ============================================
   RESPONSIVE BREADCRUMBS
   ============================================ */

@media (max-width: 640.98px) {
    .breadcrumb {
        font-size: var(--crm-font-size-xs);
        flex-wrap: wrap;
    }

    .breadcrumb-item {
        max-width: 50%;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

/* ============================================
   RESPONSIVE MODALS & OFFCANVAS
   ============================================ */

@media (max-width: 640.98px) {

    .modal-dialog,
    .offcanvas {
        margin: 0;
        max-width: 100vw;
        width: 100vw;
    }

    .modal-content,
    .offcanvas-body {
        padding: var(--crm-space-md);
    }

    .modal-header,
    .offcanvas-header {
        padding: var(--crm-space-md);
        flex-wrap: wrap;
    }

    .modal-title,
    .offcanvas-title {
        font-size: var(--crm-font-size-lg);
        width: calc(100% - 50px);
    }
}

/* ============================================
   RESPONSIVE BADGES & TAGS
   ============================================ */

@media (max-width: 640.98px) {
    .badge {
        font-size: var(--crm-font-size-xs);
        padding: var(--crm-space-xs) var(--crm-space-sm);
    }

    /* Tag lists - Wrap properly */
    .d-flex.flex-wrap.gap-1,
    .d-flex.flex-wrap.gap-2 {
        gap: var(--crm-space-xs) !important;
    }
}

/* ============================================
   RESPONSIVE PAGINATION
   ============================================ */

@media (max-width: 640.98px) {
    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }

    .pagination .page-link {
        min-width: 44px;
        min-height: 44px;
        padding: var(--crm-space-sm);
    }
}

/* ============================================
   RESPONSIVE FILTERS & SEARCH
   ============================================ */

@media (max-width: 640.98px) {

    /* Filter sections - Stack vertically */
    .card-body .row.g-3,
    .card-body .row.g-2 {
        --bs-gutter-y: var(--crm-space-md);
    }

    /* Search inputs */
    .input-group {
        width: 100%;
    }

    /* View switcher - Full width on mobile */
    .view-switcher-group {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   RESPONSIVE DETAIL PAGES
   ============================================ */

@media (max-width: 767.98px) {

    /* Detail page header - Stack actions */
    .d-flex.justify-content-between.align-items-end {
        flex-direction: column;
        align-items: flex-start !important;
        gap: var(--crm-space-md);
    }

    /* Profile avatar - Smaller on mobile */
    .position-relative[style*="margin-top: -50px"] {
        margin-top: -30px !important;
        width: 70px !important;
        height: 70px !important;
    }

    /* Detail cards - Stack columns */
    .row.g-3>.col-lg-4,
    .row.g-3>.col-lg-8,
    .row>.col-md-6 {
        width: 100%;
        flex: 0 0 100%;
        max-width: 100%;
    }

    /* Tab navigation - Scrollable */
    .nav-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tabs .nav-link {
        white-space: nowrap;
        min-width: fit-content;
    }
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

/* Focus states */
*:focus-visible {
    outline: 2px solid var(--crm-primary);
    outline-offset: 2px;
    border-radius: var(--crm-radius-sm);
}

/* Skip to content link */
.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--crm-primary);
    color: white;
    padding: var(--crm-space-sm) var(--crm-space-md);
    z-index: 9999;
    text-decoration: none;
}

.skip-to-content:focus {
    top: 0;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --crm-border-light: #000000;
        --crm-border-medium: #000000;
    }

    .btn,
    .premium-btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

/* Spacing utilities */
.mobile-p-0 {
    padding: 0 !important;
}

.mobile-p-1 {
    padding: var(--crm-space-xs) !important;
}

.mobile-p-2 {
    padding: var(--crm-space-sm) !important;
}

.mobile-p-3 {
    padding: var(--crm-space-md) !important;
}

.mobile-m-0 {
    margin: 0 !important;
}

.mobile-m-1 {
    margin: var(--crm-space-xs) !important;
}

.mobile-m-2 {
    margin: var(--crm-space-sm) !important;
}

.mobile-m-3 {
    margin: var(--crm-space-md) !important;
}

/* Display utilities */
@media (max-width: 640.98px) {
    .mobile-hide {
        display: none !important;
    }

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

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

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

@media (min-width: 641px) {
    .desktop-hide {
        display: none !important;
    }
}

/* Text utilities */
@media (max-width: 640.98px) {
    .mobile-text-center {
        text-align: center !important;
    }

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

    .mobile-text-sm {
        font-size: var(--crm-font-size-sm) !important;
    }

    .mobile-text-xs {
        font-size: var(--crm-font-size-xs) !important;
    }
}

/* Width utilities */
.mobile-w-100 {
    width: 100% !important;
}

.mobile-w-auto {
    width: auto !important;
}

@media (max-width: 640.98px) {
    .mobile-w-100 {
        width: 100% !important;
    }
}

/* ============================================
   LOADING STATES
   ============================================ */

.spinner-border {
    width: 2rem;
    height: 2rem;
    border-width: 0.25em;
}

@media (max-width: 640.98px) {
    .spinner-border {
        width: 1.5rem;
        height: 1.5rem;
    }
}

/* ============================================
   EMPTY STATES
   ============================================ */

.empty-state {
    text-align: center;
    padding: var(--crm-space-2xl) var(--crm-space-md);
    color: var(--crm-text-muted);
}

.empty-state i,
.empty-state .display-4 {
    opacity: 0.25;
    margin-bottom: var(--crm-space-md);
}

@media (max-width: 640.98px) {
    .empty-state {
        padding: var(--crm-space-xl) var(--crm-space-md);
    }

    .empty-state i {
        font-size: 3rem;
    }
}