/**
 * Responsive CSS - Mobile-First Design System
 * Course Factory - Shared across all course templates
 *
 * This file provides comprehensive responsive design support:
 * - Mobile-first breakpoint system
 * - Fluid typography
 * - Responsive grid layouts
 * - Touch-friendly interactions
 * - Orientation handling
 * - Safe area support (notches, etc.)
 * - Container queries support
 *
 * Breakpoint System:
 * - xs: 0 - 479px (small phones)
 * - sm: 480px - 767px (large phones, small tablets)
 * - md: 768px - 1023px (tablets)
 * - lg: 1024px - 1279px (small desktops, landscape tablets)
 * - xl: 1280px - 1535px (desktops)
 * - xxl: 1536px+ (large desktops)
 */

/* ============================================================================
   CSS CUSTOM PROPERTIES FOR RESPONSIVE VALUES
   ============================================================================ */

:root {
    /* Breakpoints as custom properties for reference */
    --breakpoint-xs: 0;
    --breakpoint-sm: 480px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-xxl: 1536px;

    /* Fluid spacing scale */
    --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1vw, 0.75rem);
    --space-md: clamp(0.75rem, 1.5vw, 1rem);
    --space-lg: clamp(1rem, 2vw, 1.5rem);
    --space-xl: clamp(1.5rem, 3vw, 2rem);
    --space-xxl: clamp(2rem, 4vw, 3rem);

    /* Fluid typography scale */
    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
    --font-size-base: clamp(1rem, 0.9rem + 0.4vw, 1.125rem);
    --font-size-lg: clamp(1.125rem, 1rem + 0.5vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
    --font-size-2xl: clamp(1.5rem, 1.25rem + 1vw, 2rem);
    --font-size-3xl: clamp(1.875rem, 1.5rem + 1.5vw, 2.5rem);
    --font-size-4xl: clamp(2.25rem, 1.75rem + 2vw, 3rem);

    /* Container widths */
    --container-xs: 100%;
    --container-sm: 540px;
    --container-md: 720px;
    --container-lg: 960px;
    --container-xl: 1140px;
    --container-xxl: 1320px;

    /* Sidebar width */
    --sidebar-width: 280px;
    --sidebar-width-collapsed: 60px;
}

/* ============================================================================
   BASE MOBILE STYLES (Mobile-First)
   ============================================================================ */

/* Prevent horizontal scroll */
html, body {
    overflow-x: hidden;
    width: 100%;
}

/* Base font size for accessibility */
html {
    font-size: 100%; /* 16px */
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Fluid body text */
body {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* ============================================================================
   CONTAINER SYSTEM
   ============================================================================ */

.container {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.container-fluid {
    width: 100%;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

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

.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: calc(var(--space-md) * -0.5);
    margin-right: calc(var(--space-md) * -0.5);
}

.col {
    flex: 1 0 0%;
    padding-left: calc(var(--space-md) * 0.5);
    padding-right: calc(var(--space-md) * 0.5);
}

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

/* Full width on mobile by default */
.col-mobile-full {
    flex: 0 0 100%;
    max-width: 100%;
}

/* ============================================================================
   COURSE LAYOUT - MOBILE FIRST
   ============================================================================ */

/* Main layout wrapper */
.course-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Sidebar - hidden on mobile, shown as overlay */
.sidebar,
.lesson-sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    width: 85%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-sidebar-bg, #1a1a2e);
    z-index: 1000;
    overflow-y: auto;
    transition: left 0.3s ease;
    padding-top: 60px; /* Space for close button */
}

.sidebar.active,
.lesson-sidebar.active {
    left: 0;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.3);
}

/* Main content - full width on mobile */
.main-content,
.lesson-content {
    flex: 1;
    width: 100%;
    padding: var(--space-md);
}

/* Mobile menu toggle button */
.mobile-menu-toggle {
    display: flex;
    position: fixed;
    top: var(--space-md);
    left: var(--space-md);
    z-index: 1001;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    background: var(--color-primary, #0066cc);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/* Hamburger icon */
.hamburger {
    width: 24px;
    height: 18px;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: white;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* Overlay for mobile menu */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
}

body.menu-open .sidebar-overlay {
    display: block;
}

/* ============================================================================
   NAVIGATION - MOBILE STYLES
   ============================================================================ */

.nav-module {
    border-bottom: 1px solid var(--color-border, rgba(255, 255, 255, 0.1));
}

.nav-module-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 16px;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    text-align: left;
    min-height: 56px; /* Larger touch target on mobile */
}

.nav-lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-lesson-link {
    display: flex;
    align-items: center;
    padding: 14px 16px 14px 32px;
    color: var(--color-text-muted, #aaa);
    text-decoration: none;
    min-height: 48px;
    gap: 12px;
}

.nav-lesson-link:hover,
.nav-lesson-link:focus {
    background: var(--color-hover-bg, rgba(255, 255, 255, 0.05));
    color: var(--color-text, #fff);
}

.nav-lesson-link.current {
    background: var(--color-active-bg, rgba(0, 102, 204, 0.2));
    color: var(--color-primary, #0066cc);
    border-left: 3px solid var(--color-primary, #0066cc);
}

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

h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-lg);
}

h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-md);
}

h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

h5, h6 {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-sm);
}

p {
    margin-bottom: var(--space-md);
}

/* ============================================================================
   IMAGES AND MEDIA - RESPONSIVE
   ============================================================================ */

img, video, iframe {
    max-width: 100%;
    height: auto;
}

/* Responsive aspect ratio containers */
.aspect-ratio-16-9 {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
}

.aspect-ratio-4-3 {
    position: relative;
    width: 100%;
    padding-bottom: 75%;
}

.aspect-ratio-1-1 {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
}

.aspect-ratio-16-9 > *,
.aspect-ratio-4-3 > *,
.aspect-ratio-1-1 > * {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================================================
   INTERACTIVE COMPONENTS - MOBILE OPTIMIZED
   ============================================================================ */

/* Buttons need larger touch targets on mobile */
.btn,
button {
    min-height: 48px;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    touch-action: manipulation;
}

/* Form elements */
input,
select,
textarea {
    width: 100%;
    min-height: 48px;
    padding: 12px 16px;
    font-size: 16px; /* Prevents iOS zoom */
    border-radius: 8px;
}

/* Quiz options - full width on mobile */
.quiz-option {
    width: 100%;
    min-height: 56px;
    padding: 16px;
    margin-bottom: var(--space-sm);
    text-align: left;
}

/* Drag and drop areas - larger on mobile */
.drag-item,
.drop-zone {
    min-height: 56px;
    padding: 16px;
    margin-bottom: var(--space-sm);
}

/* Cards stack vertically on mobile */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

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

/* Horizontally scrollable tables on mobile */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Stack table cells on very small screens */
@media (max-width: 479px) {
    .table-stack thead {
        display: none;
    }

    .table-stack tr {
        display: block;
        margin-bottom: var(--space-md);
        border: 1px solid var(--color-border, #ddd);
        border-radius: 8px;
        padding: var(--space-md);
    }

    .table-stack td {
        display: flex;
        justify-content: space-between;
        padding: var(--space-sm) 0;
        border: none;
        border-bottom: 1px solid var(--color-border, #eee);
    }

    .table-stack td:last-child {
        border-bottom: none;
    }

    .table-stack td::before {
        content: attr(data-label);
        font-weight: 600;
        margin-right: var(--space-md);
    }
}

/* ============================================================================
   UTILITY CLASSES - RESPONSIVE VISIBILITY
   ============================================================================ */

/* Hide/show based on screen size */
.hide-mobile { display: none !important; }
.show-mobile { display: block !important; }
.show-mobile-flex { display: flex !important; }
.show-mobile-inline { display: inline !important; }

/* ============================================================================
   SMALL PHONES BREAKPOINT (sm: 480px+)
   ============================================================================ */

@media (min-width: 480px) {
    .container {
        max-width: var(--container-sm);
    }

    /* 2 columns on large phones */
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* ============================================================================
   TABLET BREAKPOINT (md: 768px+)
   ============================================================================ */

@media (min-width: 768px) {
    :root {
        --sidebar-width: 280px;
    }

    .container {
        max-width: var(--container-md);
    }

    /* Show sidebar on tablet */
    .sidebar,
    .lesson-sidebar {
        position: sticky;
        top: 0;
        left: 0;
        width: var(--sidebar-width);
        max-width: var(--sidebar-width);
        height: 100vh;
        padding-top: 0;
        flex-shrink: 0;
    }

    /* Layout becomes horizontal */
    .course-layout {
        flex-direction: row;
    }

    /* Main content adjusts */
    .main-content,
    .lesson-content {
        flex: 1;
        min-width: 0; /* Prevent flex overflow */
        padding: var(--space-lg);
    }

    /* Hide mobile menu toggle */
    .mobile-menu-toggle {
        display: none;
    }

    /* Desktop sidebar toggle */
    .desktop-sidebar-toggle {
        display: flex;
    }

    /* Navigation items can be smaller */
    .nav-module-trigger {
        min-height: 48px;
        padding: 12px 16px;
    }

    .nav-lesson-link {
        min-height: 44px;
        padding: 10px 16px 10px 32px;
    }

    /* Form elements can be more compact */
    .btn,
    button {
        min-height: 44px;
        padding: 10px 20px;
    }

    /* Quiz options in grid */
    .quiz-options-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    /* Cards in 2-3 columns */
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Visibility utilities */
    .hide-mobile { display: block !important; }
    .show-mobile { display: none !important; }
    .show-mobile-flex { display: none !important; }
    .show-mobile-inline { display: none !important; }
    .hide-tablet { display: none !important; }
    .show-tablet { display: block !important; }
    .show-tablet-flex { display: flex !important; }

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

/* ============================================================================
   DESKTOP BREAKPOINT (lg: 1024px+)
   ============================================================================ */

@media (min-width: 1024px) {
    :root {
        --sidebar-width: 300px;
    }

    .container {
        max-width: var(--container-lg);
    }

    /* Wider sidebar on desktop */
    .sidebar,
    .lesson-sidebar {
        width: var(--sidebar-width);
        max-width: var(--sidebar-width);
    }

    /* Collapsible sidebar support */
    body.sidebar-collapsed .sidebar,
    body.sidebar-collapsed .lesson-sidebar {
        width: var(--sidebar-width-collapsed);
    }

    body.sidebar-collapsed .main-content,
    body.sidebar-collapsed .lesson-content {
        margin-left: 0;
    }

    /* Cards in 3 columns */
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Visibility utilities */
    .hide-tablet { display: block !important; }
    .show-tablet { display: none !important; }
    .show-tablet-flex { display: none !important; }
    .hide-desktop { display: none !important; }
    .show-desktop { display: block !important; }
    .show-desktop-flex { display: flex !important; }

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

/* ============================================================================
   LARGE DESKTOP BREAKPOINT (xl: 1280px+)
   ============================================================================ */

@media (min-width: 1280px) {
    :root {
        --sidebar-width: 320px;
    }

    .container {
        max-width: var(--container-xl);
    }

    /* Cards in 4 columns */
    .card-grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }

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

/* ============================================================================
   EXTRA LARGE DESKTOP BREAKPOINT (xxl: 1536px+)
   ============================================================================ */

@media (min-width: 1536px) {
    .container {
        max-width: var(--container-xxl);
    }

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

/* ============================================================================
   ORIENTATION HANDLING
   ============================================================================ */

/* Landscape phone adjustments */
@media (max-width: 767px) and (orientation: landscape) {
    /* Reduce header height */
    .course-header,
    .lesson-header {
        padding-top: var(--space-sm);
        padding-bottom: var(--space-sm);
    }

    /* Sidebar can be narrower */
    .sidebar.active,
    .lesson-sidebar.active {
        max-width: 280px;
    }

    /* Video player fills viewport */
    .video-player-fullscreen {
        max-height: 100vh;
    }
}

/* Portrait tablet adjustments */
@media (min-width: 768px) and (max-width: 1023px) and (orientation: portrait) {
    /* Narrower sidebar in portrait */
    .sidebar,
    .lesson-sidebar {
        width: 260px;
    }
}

/* ============================================================================
   SAFE AREA INSETS (Notches, Home Indicators)
   ============================================================================ */

@supports (padding: max(0px)) {
    /* Apply safe area padding to key elements */
    .mobile-menu-toggle {
        top: max(var(--space-md), env(safe-area-inset-top));
        left: max(var(--space-md), env(safe-area-inset-left));
    }

    .sidebar,
    .lesson-sidebar {
        padding-left: env(safe-area-inset-left);
        padding-bottom: env(safe-area-inset-bottom);
    }

    .main-content,
    .lesson-content {
        padding-right: max(var(--space-md), env(safe-area-inset-right));
        padding-bottom: max(var(--space-md), env(safe-area-inset-bottom));
    }

    /* Fixed bottom elements */
    .bottom-nav,
    .lesson-footer {
        padding-bottom: max(var(--space-md), env(safe-area-inset-bottom));
    }
}

/* ============================================================================
   SPACING UTILITIES - RESPONSIVE
   ============================================================================ */

/* Margin utilities */
.m-0 { margin: 0 !important; }
.m-auto { margin: auto !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }
.my-auto { margin-top: auto !important; margin-bottom: auto !important; }

.m-xs { margin: var(--space-xs) !important; }
.m-sm { margin: var(--space-sm) !important; }
.m-md { margin: var(--space-md) !important; }
.m-lg { margin: var(--space-lg) !important; }
.m-xl { margin: var(--space-xl) !important; }

.mt-xs { margin-top: var(--space-xs) !important; }
.mt-sm { margin-top: var(--space-sm) !important; }
.mt-md { margin-top: var(--space-md) !important; }
.mt-lg { margin-top: var(--space-lg) !important; }
.mt-xl { margin-top: var(--space-xl) !important; }

.mb-xs { margin-bottom: var(--space-xs) !important; }
.mb-sm { margin-bottom: var(--space-sm) !important; }
.mb-md { margin-bottom: var(--space-md) !important; }
.mb-lg { margin-bottom: var(--space-lg) !important; }
.mb-xl { margin-bottom: var(--space-xl) !important; }

/* Padding utilities */
.p-0 { padding: 0 !important; }
.p-xs { padding: var(--space-xs) !important; }
.p-sm { padding: var(--space-sm) !important; }
.p-md { padding: var(--space-md) !important; }
.p-lg { padding: var(--space-lg) !important; }
.p-xl { padding: var(--space-xl) !important; }

/* ============================================================================
   FLEXBOX UTILITIES
   ============================================================================ */

.d-flex { display: flex !important; }
.d-inline-flex { display: inline-flex !important; }
.d-block { display: block !important; }
.d-inline-block { display: inline-block !important; }
.d-none { display: none !important; }

.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }

.justify-start { justify-content: flex-start !important; }
.justify-end { justify-content: flex-end !important; }
.justify-center { justify-content: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-around { justify-content: space-around !important; }

.align-start { align-items: flex-start !important; }
.align-end { align-items: flex-end !important; }
.align-center { align-items: center !important; }
.align-stretch { align-items: stretch !important; }

.flex-grow-0 { flex-grow: 0 !important; }
.flex-grow-1 { flex-grow: 1 !important; }
.flex-shrink-0 { flex-shrink: 0 !important; }
.flex-shrink-1 { flex-shrink: 1 !important; }

/* Gap utilities */
.gap-xs { gap: var(--space-xs) !important; }
.gap-sm { gap: var(--space-sm) !important; }
.gap-md { gap: var(--space-md) !important; }
.gap-lg { gap: var(--space-lg) !important; }
.gap-xl { gap: var(--space-xl) !important; }

/* ============================================================================
   TEXT UTILITIES - RESPONSIVE
   ============================================================================ */

.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

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

/* Responsive text alignment */
@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; }
}

@media (min-width: 1024px) {
    .text-lg-left { text-align: left !important; }
    .text-lg-center { text-align: center !important; }
    .text-lg-right { text-align: right !important; }
}