/**
 * Breakpoint Standardization CSS
 * Consistent responsive breakpoints for MRX DataLab Research
 */

/* ==================== BREAKPOINT DEFINITIONS ==================== */
:root {
    /* Mobile First Breakpoints */
    --breakpoint-xs: 0px;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    --breakpoint-xxl: 1400px;
    
    /* Container Max Widths */
    --container-sm: 540px;
    --container-md: 720px;
    --container-lg: 960px;
    --container-xl: 1140px;
    --container-xxl: 1320px;
    
    /* Grid Columns */
    --grid-columns: 12;
    --grid-gutter: 1rem;
    
    /* Typography Scale */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Spacing Scale */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
}

/* ==================== RESPONSIVE UTILITIES ==================== */

/* Container */
.container {
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    padding-right: var(--grid-gutter);
    padding-left: var(--grid-gutter);
}

/* Responsive Containers */
@media (min-width: 576px) {
    .container {
        max-width: var(--container-sm);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: var(--container-md);
    }
}

@media (min-width: 992px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: var(--container-xl);
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: var(--container-xxl);
    }
}

/* ==================== GRID SYSTEM ==================== */

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(-1 * var(--grid-gutter) / 2);
    margin-left: calc(-1 * var(--grid-gutter) / 2);
}

.col {
    flex: 1 0 0%;
    padding-right: calc(var(--grid-gutter) / 2);
    padding-left: calc(var(--grid-gutter) / 2);
}

/* Responsive Columns */
.col-xs-12 { flex: 0 0 100%; max-width: 100%; }
.col-xs-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
.col-xs-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
.col-xs-9 { flex: 0 0 75%; max-width: 75%; }
.col-xs-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
.col-xs-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
.col-xs-6 { flex: 0 0 50%; max-width: 50%; }
.col-xs-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
.col-xs-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
.col-xs-3 { flex: 0 0 25%; max-width: 25%; }
.col-xs-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
.col-xs-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }

@media (min-width: 576px) {
    .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
    .col-sm-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-sm-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-sm-9 { flex: 0 0 75%; max-width: 75%; }
    .col-sm-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-sm-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-sm-6 { flex: 0 0 50%; max-width: 50%; }
    .col-sm-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-sm-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-sm-3 { flex: 0 0 25%; max-width: 25%; }
    .col-sm-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-sm-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
}

@media (min-width: 768px) {
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
    .col-md-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-md-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-md-9 { flex: 0 0 75%; max-width: 75%; }
    .col-md-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-md-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-md-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    .col-md-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-md-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
}

@media (min-width: 992px) {
    .col-lg-12 { flex: 0 0 100%; max-width: 100%; }
    .col-lg-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-lg-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-lg-9 { flex: 0 0 75%; max-width: 75%; }
    .col-lg-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-lg-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-lg-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    .col-lg-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-lg-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
}

@media (min-width: 1200px) {
    .col-xl-12 { flex: 0 0 100%; max-width: 100%; }
    .col-xl-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-xl-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-xl-9 { flex: 0 0 75%; max-width: 75%; }
    .col-xl-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-xl-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-xl-6 { flex: 0 0 50%; max-width: 50%; }
    .col-xl-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-xl-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-xl-3 { flex: 0 0 25%; max-width: 25%; }
    .col-xl-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-xl-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
}

@media (min-width: 1400px) {
    .col-xxl-12 { flex: 0 0 100%; max-width: 100%; }
    .col-xxl-11 { flex: 0 0 91.666667%; max-width: 91.666667%; }
    .col-xxl-10 { flex: 0 0 83.333333%; max-width: 83.333333%; }
    .col-xxl-9 { flex: 0 0 75%; max-width: 75%; }
    .col-xxl-8 { flex: 0 0 66.666667%; max-width: 66.666667%; }
    .col-xxl-7 { flex: 0 0 58.333333%; max-width: 58.333333%; }
    .col-xxl-6 { flex: 0 0 50%; max-width: 50%; }
    .col-xxl-5 { flex: 0 0 41.666667%; max-width: 41.666667%; }
    .col-xxl-4 { flex: 0 0 33.333333%; max-width: 33.333333%; }
    .col-xxl-3 { flex: 0 0 25%; max-width: 25%; }
    .col-xxl-2 { flex: 0 0 16.666667%; max-width: 16.666667%; }
    .col-xxl-1 { flex: 0 0 8.333333%; max-width: 8.333333%; }
}

/* ==================== RESPONSIVE TYPOGRAPHY ==================== */

/* Base Typography */
body {
    font-size: var(--font-size-base);
    line-height: 1.5;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

/* Responsive Typography */
@media (max-width: 575px) {
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    h4 { font-size: var(--font-size-lg); }
    h5 { font-size: var(--font-size-base); }
    h6 { font-size: var(--font-size-sm); }
}

@media (min-width: 576px) and (max-width: 767px) {
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
}

@media (min-width: 768px) and (max-width: 991px) {
    h1 { font-size: var(--font-size-4xl); }
    h2 { font-size: var(--font-size-3xl); }
    h3 { font-size: var(--font-size-2xl); }
}

/* ==================== RESPONSIVE SPACING ==================== */

/* Responsive Padding */
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

@media (min-width: 768px) {
    .p-md-sm { padding: var(--spacing-sm); }
    .p-md-md { padding: var(--spacing-md); }
    .p-md-lg { padding: var(--spacing-lg); }
    .p-md-xl { padding: var(--spacing-xl); }
}

@media (min-width: 992px) {
    .p-lg-sm { padding: var(--spacing-sm); }
    .p-lg-md { padding: var(--spacing-md); }
    .p-lg-lg { padding: var(--spacing-lg); }
    .p-lg-xl { padding: var(--spacing-xl); }
}

/* Responsive Margin */
.m-xs { margin: var(--spacing-xs); }
.m-sm { margin: var(--spacing-sm); }
.m-md { margin: var(--spacing-md); }
.m-lg { margin: var(--spacing-lg); }
.m-xl { margin: var(--spacing-xl); }

@media (min-width: 768px) {
    .m-md-sm { margin: var(--spacing-sm); }
    .m-md-md { margin: var(--spacing-md); }
    .m-md-lg { margin: var(--spacing-lg); }
    .m-md-xl { margin: var(--spacing-xl); }
}

@media (min-width: 992px) {
    .m-lg-sm { margin: var(--spacing-sm); }
    .m-lg-md { margin: var(--spacing-md); }
    .m-lg-lg { margin: var(--spacing-lg); }
    .m-lg-xl { margin: var(--spacing-xl); }
}

/* ==================== RESPONSIVE DISPLAY ==================== */

/* Display Utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-inline { display: inline !important; }
.d-inline-block { display: inline-block !important; }

/* Responsive Display */
@media (min-width: 576px) {
    .d-sm-none { display: none !important; }
    .d-sm-block { display: block !important; }
    .d-sm-flex { display: flex !important; }
    .d-sm-inline { display: inline !important; }
    .d-sm-inline-block { display: inline-block !important; }
}

@media (min-width: 768px) {
    .d-md-none { display: none !important; }
    .d-md-block { display: block !important; }
    .d-md-flex { display: flex !important; }
    .d-md-inline { display: inline !important; }
    .d-md-inline-block { display: inline-block !important; }
}

@media (min-width: 992px) {
    .d-lg-none { display: none !important; }
    .d-lg-block { display: block !important; }
    .d-lg-flex { display: flex !important; }
    .d-lg-inline { display: inline !important; }
    .d-lg-inline-block { display: inline-block !important; }
}

@media (min-width: 1200px) {
    .d-xl-none { display: none !important; }
    .d-xl-block { display: block !important; }
    .d-xl-flex { display: flex !important; }
    .d-xl-inline { display: inline !important; }
    .d-xl-inline-block { display: inline-block !important; }
}

@media (min-width: 1400px) {
    .d-xxl-none { display: none !important; }
    .d-xxl-block { display: block !important; }
    .d-xxl-flex { display: flex !important; }
    .d-xxl-inline { display: inline !important; }
    .d-xxl-inline-block { display: inline-block !important; }
}

/* ==================== RESPONSIVE FLEXBOX ==================== */

/* Flex Direction */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-row-reverse { flex-direction: row-reverse !important; }
.flex-column-reverse { flex-direction: column-reverse !important; }

@media (min-width: 576px) {
    .flex-sm-row { flex-direction: row !important; }
    .flex-sm-column { flex-direction: column !important; }
    .flex-sm-row-reverse { flex-direction: row-reverse !important; }
    .flex-sm-column-reverse { flex-direction: column-reverse !important; }
}

@media (min-width: 768px) {
    .flex-md-row { flex-direction: row !important; }
    .flex-md-column { flex-direction: column !important; }
    .flex-md-row-reverse { flex-direction: row-reverse !important; }
    .flex-md-column-reverse { flex-direction: column-reverse !important; }
}

@media (min-width: 992px) {
    .flex-lg-row { flex-direction: row !important; }
    .flex-lg-column { flex-direction: column !important; }
    .flex-lg-row-reverse { flex-direction: row-reverse !important; }
    .flex-lg-column-reverse { flex-direction: column-reverse !important; }
}

/* Flex Wrap */
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }
.flex-wrap-reverse { flex-wrap: wrap-reverse !important; }

@media (min-width: 576px) {
    .flex-sm-wrap { flex-wrap: wrap !important; }
    .flex-sm-nowrap { flex-wrap: nowrap !important; }
    .flex-sm-wrap-reverse { flex-wrap: wrap-reverse !important; }
}

@media (min-width: 768px) {
    .flex-md-wrap { flex-wrap: wrap !important; }
    .flex-md-nowrap { flex-wrap: nowrap !important; }
    .flex-md-wrap-reverse { flex-wrap: wrap-reverse !important; }
}

@media (min-width: 992px) {
    .flex-lg-wrap { flex-wrap: wrap !important; }
    .flex-lg-nowrap { flex-wrap: nowrap !important; }
    .flex-lg-wrap-reverse { flex-wrap: wrap-reverse !important; }
}

/* ==================== RESPONSIVE TEXT ==================== */

/* Text Alignment */
.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }
.text-justify { text-align: justify !important; }

@media (min-width: 576px) {
    .text-sm-left { text-align: left !important; }
    .text-sm-center { text-align: center !important; }
    .text-sm-right { text-align: right !important; }
    .text-sm-justify { text-align: justify !important; }
}

@media (min-width: 768px) {
    .text-md-left { text-align: left !important; }
    .text-md-center { text-align: center !important; }
    .text-md-right { text-align: right !important; }
    .text-md-justify { text-align: justify !important; }
}

@media (min-width: 992px) {
    .text-lg-left { text-align: left !important; }
    .text-lg-center { text-align: center !important; }
    .text-lg-right { text-align: right !important; }
    .text-lg-justify { text-align: justify !important; }
}

@media (min-width: 1200px) {
    .text-xl-left { text-align: left !important; }
    .text-xl-center { text-align: center !important; }
    .text-xl-right { text-align: right !important; }
    .text-xl-justify { text-align: justify !important; }
}

/* ==================== RESPONSIVE COMPONENTS ==================== */

/* Navigation */
.navbar {
    padding: var(--spacing-md);
}

@media (max-width: 767px) {
    .navbar {
        padding: var(--spacing-sm);
    }
    
    .navbar-nav {
        flex-direction: column;
    }
    
    .navbar-collapse {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-top: 1px solid #dee2e6;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }
}

/* Cards */
.card {
    margin-bottom: var(--spacing-md);
}

@media (min-width: 768px) {
    .card {
        margin-bottom: var(--spacing-lg);
    }
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

@media (max-width: 767px) {
    .table-responsive {
        font-size: var(--font-size-sm);
    }
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}

@media (max-width: 767px) {
    .form-group {
        margin-bottom: var(--spacing-sm);
    }
    
    .form-control {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
}

@media (max-width: 767px) {
    .btn {
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
        width: 100%;
        margin-bottom: var(--spacing-xs);
    }
}

/* ==================== RESPONSIVE LAYOUTS ==================== */

/* Hero Section */
.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

@media (max-width: 767px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero h1 {
        font-size: var(--font-size-2xl);
    }
}

/* Content Sections */
.section {
    padding: var(--spacing-2xl) 0;
}

@media (max-width: 767px) {
    .section {
        padding: var(--spacing-xl) 0;
    }
}

/* Footer */
.footer {
    padding: var(--spacing-xl) 0;
}

@media (max-width: 767px) {
    .footer {
        padding: var(--spacing-lg) 0;
        text-align: center;
    }
}

/* ==================== RESPONSIVE IMAGES ==================== */

.img-fluid {
    max-width: 100%;
    height: auto;
}

.img-thumbnail {
    padding: var(--spacing-xs);
    background-color: #fff;
    border: 1px solid #dee2e6;
    border-radius: 0.25rem;
    max-width: 100%;
    height: auto;
}

/* ==================== RESPONSIVE UTILITIES ==================== */

/* Visibility */
.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

@media (min-width: 576px) {
    .visible-sm { visibility: visible !important; }
    .invisible-sm { visibility: hidden !important; }
}

@media (min-width: 768px) {
    .visible-md { visibility: visible !important; }
    .invisible-md { visibility: hidden !important; }
}

@media (min-width: 992px) {
    .visible-lg { visibility: visible !important; }
    .invisible-lg { visibility: hidden !important; }
}

@media (min-width: 1200px) {
    .visible-xl { visibility: visible !important; }
    .invisible-xl { visibility: hidden !important; }
}

/* Position */
.position-static { position: static !important; }
.position-relative { position: relative !important; }
.position-absolute { position: absolute !important; }
.position-fixed { position: fixed !important; }
.position-sticky { position: sticky !important; }

/* ==================== PRINT STYLES ==================== */

@media print {
    .d-print-none { display: none !important; }
    .d-print-block { display: block !important; }
    .d-print-inline { display: inline !important; }
    .d-print-inline-block { display: inline-block !important; }
    
    .container {
        max-width: none !important;
        width: 100% !important;
    }
    
    .row {
        display: block !important;
    }
    
    .col {
        flex: none !important;
        max-width: 100% !important;
    }
}

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

/* Focus styles */
.focus-visible:focus {
    outline: 2px solid #007bff;
    outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast */
@media (prefers-contrast: high) {
    .btn {
        border-width: 2px;
    }
    
    .form-control {
        border-width: 2px;
    }
}

/* ==================== DARK MODE SUPPORT ==================== */

@media (prefers-color-scheme: dark) {
    :root {
        --text-color: #ffffff;
        --bg-color: #121212;
        --border-color: #404040;
    }
    
    body {
        color: var(--text-color);
        background-color: var(--bg-color);
    }
    
    .card {
        background-color: #1e1e1e;
        border-color: var(--border-color);
    }
    
    .form-control {
        background-color: #1e1e1e;
        border-color: var(--border-color);
        color: var(--text-color);
    }
}