/**
 * Mobile-First Responsive Architecture for tCapital
 * Production-ready scalable design system
 */

/* ===== MOBILE-FIRST BASE STYLES ===== */

/* Core System Variables */
:root {
    /* Fluid Typography Scale */
    --fs-xs: clamp(0.75rem, 0.69rem + 0.31vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 0.81rem + 0.31vw, 1rem);
    --fs-base: clamp(1rem, 0.92rem + 0.39vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 1.02rem + 0.51vw, 1.25rem);
    --fs-xl: clamp(1.25rem, 1.11rem + 0.69vw, 1.5rem);
    --fs-2xl: clamp(1.5rem, 1.29rem + 1.02vw, 1.875rem);
    --fs-3xl: clamp(1.875rem, 1.58rem + 1.46vw, 2.25rem);
    
    /* Responsive Spacing */
    --space-xs: clamp(0.25rem, 0.23rem + 0.12vw, 0.375rem);
    --space-sm: clamp(0.5rem, 0.46rem + 0.19vw, 0.75rem);
    --space-md: clamp(1rem, 0.92rem + 0.39vw, 1.5rem);
    --space-lg: clamp(1.5rem, 1.35rem + 0.78vw, 2.25rem);
    --space-xl: clamp(2rem, 1.77rem + 1.17vw, 3rem);
    --space-2xl: clamp(3rem, 2.61rem + 1.95vw, 4.5rem);
    
    /* Layout Grid */
    --container-max: 1400px;
    --container-padding: var(--space-md);
    --grid-gap: var(--space-md);
    
    /* Interactive States */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    
    /* Border Radius System */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* Shadow System */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

/* Mobile-First Typography */
body {
    font-size: var(--fs-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* ===== DASHBOARD LAYOUT ===== */

.dashboard-container {
    display: flex;
    min-height: 100vh;
    background-color: #f8f9fa;
}

.dashboard-sidebar {
    width: 280px;
    background: linear-gradient(180deg, #00091a 0%, #1a1a2e 100%);
    border-right: 1px solid #495057;
    z-index: var(--z-sticky);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    overflow-y: auto;
}

.dashboard-main {
    flex: 1;
    margin-left: 280px;
    padding: var(--space-lg);
    min-height: 100vh;
    background-color: #ffffff;
}

/* ===== MOBILE NAVIGATION ===== */

.navbar-mobile {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: var(--space-sm) 0;
    transition: transform var(--transition-base);
}

.navbar-mobile.hidden {
    transform: translateY(-100%);
}

.mobile-nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-md);
    max-width: var(--container-max);
    margin: 0 auto;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #333;
    margin: 4px 0;
    transition: var(--transition-base);
}

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

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ===== RESPONSIVE DASHBOARD LAYOUT ===== */

.dashboard-container {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 100vh;
    padding-top: 80px; /* Account for fixed navbar */
}

.dashboard-sidebar {
    transform: translateX(-100%);
    position: fixed;
    top: 80px;
    left: 0;
    width: 280px;
    height: calc(100vh - 80px);
    background: white;
    z-index: var(--z-dropdown);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

.dashboard-sidebar.open {
    transform: translateX(0);
}

.dashboard-main {
    padding: var(--space-md);
    max-width: 100%;
    overflow-x: hidden;
}

/* ===== MOBILE-FIRST CARD SYSTEM ===== */

.card-responsive {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
    margin-bottom: var(--space-md);
}

.card-responsive:hover {
    box-shadow: var(--shadow-md);
}

.card-responsive .card-header {
    padding: var(--space-md);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    background: rgba(0, 0, 0, 0.02);
}

.card-responsive .card-body {
    padding: var(--space-md);
}

.card-responsive .card-footer {
    padding: var(--space-md);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    background: rgba(0, 0, 0, 0.02);
}

/* ===== MOBILE-OPTIMIZED GRID SYSTEM ===== */

.grid-responsive {
    display: grid;
    gap: var(--grid-gap);
    grid-template-columns: 1fr;
}

.grid-item {
    min-width: 0; /* Prevent overflow */
}

/* ===== TOUCH-FRIENDLY INTERACTIONS ===== */

.btn-touch {
    min-height: 44px; /* iOS minimum touch target */
    min-width: 44px;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    border: none;
    background: #0066cc;
    color: white;
    font-weight: 500;
    font-size: var(--fs-base);
    transition: all var(--transition-fast);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    text-decoration: none;
}

.btn-touch:hover {
    background: #0052a3;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-touch:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-touch.btn-secondary {
    background: #6c757d;
}

.btn-touch.btn-secondary:hover {
    background: #545b62;
}

.btn-touch.btn-outline {
    background: transparent;
    color: #0066cc;
    border: 2px solid #0066cc;
}

.btn-touch.btn-outline:hover {
    background: #0066cc;
    color: white;
}

/* ===== MOBILE PERFORMANCE OPTIMIZATIONS ===== */

/* Reduce paint operations */
.will-change-transform {
    will-change: transform;
}

.will-change-scroll {
    will-change: scroll-position;
}

/* GPU acceleration for smooth animations */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Optimize scrolling */
.smooth-scroll {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
    
    .dashboard-main {
        padding: var(--space-lg);
    }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
    
    .dashboard-container {
        grid-template-columns: 280px 1fr;
    }
    
    .dashboard-sidebar {
        position: static;
        transform: none;
        height: auto;
        box-shadow: none;
        border-right: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .dashboard-main {
        padding: var(--space-xl);
    }
    
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
    .dashboard-container {
        grid-template-columns: 320px 1fr;
    }
    
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
}

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
    .dashboard-main {
        padding: var(--space-2xl);
        max-width: calc(var(--container-max) - 320px);
    }
    
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

/* ===== MOBILE-SPECIFIC COMPONENTS ===== */

/* Mobile-optimized table */
.table-mobile {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.table-mobile table {
    width: 100%;
    min-width: 600px;
    border-collapse: collapse;
}

.table-mobile th,
.table-mobile td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.table-mobile th {
    background: rgba(0, 0, 0, 0.02);
    font-weight: 600;
    font-size: var(--fs-sm);
}

/* Mobile-optimized modal */
.modal-mobile {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-mobile.open {
    opacity: 1;
    visibility: visible;
}

.modal-mobile .modal-content {
    background: white;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    padding: var(--space-lg);
    width: 100%;
    max-width: 500px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.modal-mobile.open .modal-content {
    transform: translateY(0);
}

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

/* Focus indicators */
.focus-visible {
    outline: 2px solid #0066cc;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .card-responsive {
        border: 2px solid #333;
    }
    
    .btn-touch {
        border: 2px solid currentColor;
    }
}

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

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --shadow-sm: 0 1px 2px 0 rgb(255 255 255 / 0.05);
        --shadow-md: 0 4px 6px -1px rgb(255 255 255 / 0.1), 0 2px 4px -2px rgb(255 255 255 / 0.1);
        --shadow-lg: 0 10px 15px -3px rgb(255 255 255 / 0.1), 0 4px 6px -4px rgb(255 255 255 / 0.1);
    }
    
    body {
        background: #1a1a1a;
        color: white;
    }
    
    .card-responsive {
        background: #2a2a2a;
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .navbar-mobile {
        background: rgba(42, 42, 42, 0.95);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */

/* Critical resource hints */
.preload-important {
    content-visibility: auto;
    contain-intrinsic-size: 300px;
}

/* Intersection observer optimizations */
.lazy-load {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.lazy-load.loaded {
    opacity: 1;
    transform: translateY(0);
}

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

@media print {
    .no-print {
        display: none !important;
    }
    
    .dashboard-sidebar {
        display: none !important;
    }
    
    .dashboard-main {
        padding: 0 !important;
    }
    
    .card-responsive {
        box-shadow: none !important;
        border: 1px solid #000 !important;
        page-break-inside: avoid;
    }
}
/* ===== DASHBOARD RESPONSIVE FIXES ===== */

.grid-responsive {
    display: grid;
    gap: var(--grid-gap);
    grid-template-columns: 1fr;
}

.grid-item {
    min-width: 0;
}

.grid-item.full-width {
    grid-column: 1 / -1;
}

.grid-item.primary-content {
    grid-column: 1 / -1;
}

.card-responsive {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

@media (min-width: 768px) {
    .grid-responsive {
        grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    }
    
    .grid-item.primary-content {
        grid-column: 1 / -2;
    }
}

@media (max-width: 768px) {
    .dashboard-sidebar {
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        z-index: var(--z-modal);
    }
    
    .dashboard-sidebar.open {
        transform: translateX(0);
    }
    
    .dashboard-main {
        margin-left: 0;
        padding: var(--space-md);
    }
}