/* =============================================================================
   chisl - ENHANCED CSS FOUNDATION
   ============================================================================= */

/* =============================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================================================= */

* {
    /* Base hue for consistent color relationships */
    --chisl-hue: 220;
    --chisl-saturation: 8%;
    
    /* Light theme colors */
    --text-primary-light: hsl(var(--chisl-hue) 18% 12%);
    --text-secondary-light: hsl(var(--chisl-hue) 12% 42%);
    --text-muted-light: hsl(var(--chisl-hue) 8% 58%);
    --text-inverse-light: hsl(0 0% 100%);
    
    --surface-primary-light: hsl(0 0% 100%);
    --surface-secondary-light: hsl(var(--chisl-hue) 12% 98%);
    --surface-tertiary-light: hsl(var(--chisl-hue) 10% 95%);
    --surface-quaternary-light: hsl(var(--chisl-hue) 8% 90%);
    --surface-elevated-light: hsl(0 0% 100%);
    --surface-navbar-light: hsl(var(--chisl-hue) 15% 97%);
    
    --border-light: hsl(var(--chisl-hue) 10% 85%);
    --border-focus-light: hsl(var(--chisl-hue) 18% 70%);
    --border-navbar-light: hsl(var(--chisl-hue) 12% 88%);
    
    /* Dark theme colors */
    --text-primary-dark: hsl(var(--chisl-hue) 20% 92%);
    --text-secondary-dark: hsl(var(--chisl-hue) 12% 72%);
    --text-muted-dark: hsl(var(--chisl-hue) 8% 58%);
    --text-inverse-dark: hsl(var(--chisl-hue) 18% 12%);
    
    --surface-primary-dark: hsl(var(--chisl-hue) 10% 8%);
    --surface-secondary-dark: hsl(var(--chisl-hue) 10% 12%);
    --surface-tertiary-dark: hsl(var(--chisl-hue) 8% 16%);
    --surface-quaternary-dark: hsl(var(--chisl-hue) 6% 20%);
    --surface-elevated-dark: hsl(var(--chisl-hue) 12% 14%);
    --surface-navbar-dark: hsl(var(--chisl-hue) 12% 10%);
    
    --border-dark: hsl(var(--chisl-hue) 10% 24%);
    --border-focus-dark: hsl(var(--chisl-hue) 18% 45%);
    --border-navbar-dark: hsl(var(--chisl-hue) 10% 20%);
    
    /* Semantic colors */
    --accent-primary: hsl(212 90% 58%);
    --accent-primary-hover: hsl(212 90% 52%);
    --accent-success: hsl(142 70% 40%);
    --accent-success-hover: hsl(142 70% 35%);
    --accent-warning: hsl(45 88% 50%);
    --accent-warning-hover: hsl(45 88% 45%);
    --accent-danger: hsl(0 80% 58%);
    --accent-danger-hover: hsl(0 80% 52%);
    --accent-info: hsl(195 90% 58%);
    --accent-info-hover: hsl(195 90% 52%);
    
    /* Enhanced spacing scale with more granular control */
    --space-xs: 0.25rem;    /* 4px */
    --space-sm: 0.5rem;     /* 8px */
    --space-md: 0.75rem;    /* 12px */
    --space-lg: 1rem;       /* 16px */
    --space-xl: 1.5rem;     /* 24px */
    --space-2xl: 2rem;      /* 32px */
    --space-3xl: 2.5rem;    /* 40px */
    --space-4xl: 3rem;      /* 48px */
    
    /* Enhanced border radius */
    --radius-xs: 0.125rem;
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.25rem;
    --radius-full: 50%;
    
    /* Improved typography scale */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */
    
    /* Component-specific sizes */
    --navbar-height: 3rem;
    --navbar-padding-y: 0.5rem;
    --navbar-padding-x: 1rem;
    --button-height-sm: 2rem;
    --button-height-md: 2.5rem;
    --button-height-lg: 3rem;
    --container-padding: clamp(1rem, 4vw, 2rem);
    
    /* Enhanced shadows with better layering */
    --shadow-xs: 0 1px 2px 0 hsl(0 0% 0% / 0.03);
    --shadow-sm: 0 1px 3px 0 hsl(0 0% 0% / 0.08), 0 1px 2px -1px hsl(0 0% 0% / 0.08);
    --shadow-base: 0 2px 4px 0 hsl(0 0% 0% / 0.1), 0 1px 3px -1px hsl(0 0% 0% / 0.1);
    --shadow-md: 0 4px 8px -1px hsl(0 0% 0% / 0.12), 0 2px 4px -2px hsl(0 0% 0% / 0.12);
    --shadow-lg: 0 8px 16px -3px hsl(0 0% 0% / 0.15), 0 4px 6px -4px hsl(0 0% 0% / 0.15);
    --shadow-xl: 0 12px 24px -6px hsl(0 0% 0% / 0.18), 0 8px 12px -8px hsl(0 0% 0% / 0.18);
    
    /* Refined transitions */
    --transition-fast: 120ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* =============================================================================
   THEME DEFINITIONS
   ============================================================================= */

:root {
    color-scheme: light;
    
    /* Semantic token assignments for light theme */
    --color-text-primary: var(--text-primary-light);
    --color-text-secondary: var(--text-secondary-light);
    --color-text-muted: var(--text-muted-light);
    --color-text-inverse: var(--text-inverse-light);
    
    --color-surface-primary: var(--surface-primary-light);
    --color-surface-secondary: var(--surface-secondary-light);
    --color-surface-tertiary: var(--surface-tertiary-light);
    --color-surface-quaternary: var(--surface-quaternary-light);
    --color-surface-elevated: var(--surface-elevated-light);
    --color-surface-navbar: var(--surface-navbar-light);
    
    --color-border: var(--border-light);
    --color-border-focus: var(--border-focus-light);
    --color-border-navbar: var(--border-navbar-light);
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        
        /* Semantic token assignments for dark theme */
        --color-text-primary: var(--text-primary-dark);
        --color-text-secondary: var(--text-secondary-dark);
        --color-text-muted: var(--text-muted-dark);
        --color-text-inverse: var(--text-inverse-dark);
        
        --color-surface-primary: var(--surface-primary-dark);
        --color-surface-secondary: var(--surface-secondary-dark);
        --color-surface-tertiary: var(--surface-tertiary-dark);
        --color-surface-quaternary: var(--surface-quaternary-dark);
        --color-surface-elevated: var(--surface-elevated-dark);
        --color-surface-navbar: var(--surface-navbar-dark);
        
        --color-border: var(--border-dark);
        --color-border-focus: var(--border-focus-dark);
        --color-border-navbar: var(--border-navbar-dark);
    }
}

/* Manual theme override classes */
[data-theme="light"] {
    color-scheme: light;
    --color-text-primary: var(--text-primary-light);
    --color-text-secondary: var(--text-secondary-light);
    --color-text-muted: var(--text-muted-light);
    --color-text-inverse: var(--text-inverse-light);
    --color-surface-primary: var(--surface-primary-light);
    --color-surface-secondary: var(--surface-secondary-light);
    --color-surface-tertiary: var(--surface-tertiary-light);
    --color-surface-quaternary: var(--surface-quaternary-light);
    --color-surface-elevated: var(--surface-elevated-light);
    --color-surface-navbar: var(--surface-navbar-light);
    --color-border: var(--border-light);
    --color-border-focus: var(--border-focus-light);
    --color-border-navbar: var(--border-navbar-light);
}

[data-theme="dark"] {
    color-scheme: dark;
    --color-text-primary: var(--text-primary-dark);
    --color-text-secondary: var(--text-secondary-dark);
    --color-text-muted: var(--text-muted-dark);
    --color-text-inverse: var(--text-inverse-dark);
    --color-surface-primary: var(--surface-primary-dark);
    --color-surface-secondary: var(--surface-secondary-dark);
    --color-surface-tertiary: var(--surface-tertiary-dark);
    --color-surface-quaternary: var(--surface-quaternary-dark);
    --color-surface-elevated: var(--surface-elevated-dark);
    --color-surface-navbar: var(--surface-navbar-dark);
    --color-border: var(--border-dark);
    --color-border-focus: var(--border-focus-dark);
    --color-border-navbar: var(--border-navbar-dark);
}

/* =============================================================================
   BASE STYLES
   ============================================================================= */

html {
    box-sizing: border-box;
    font-size: 14px;
    min-height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

*,
*::before,
*::after {
    box-sizing: inherit;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    background-color: var(--color-surface-primary);
    color: var(--color-text-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Enhanced scroll behavior */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* =============================================================================
   ENHANCED NAVIGATION STYLES
   ============================================================================= */

.navbar {
    min-height: var(--navbar-height);
    background-color: var(--color-surface-navbar) !important;
    border-bottom: 1px solid var(--color-border-navbar);
    box-shadow: var(--shadow-sm);
    padding: var(--navbar-padding-y) 0;
    transition: all var(--transition-base);
    backdrop-filter: blur(8px);
}

.navbar-brand {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary) !important;
    text-decoration: none;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.navbar-brand:hover,
.navbar-brand:focus {
    color: var(--accent-primary) !important;
    background-color: var(--color-surface-tertiary);
    transform: translateY(-1px);
}

/* Enhanced nav links */
.navbar-nav .nav-link {
    color: var(--color-text-primary) !important;
    font-weight: 500;
    font-size: var(--font-size-base);
    padding: var(--space-xs) var(--space-md);
    margin: 0 var(--space-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--accent-primary) !important;
    background-color: var(--color-surface-tertiary);
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    color: var(--accent-primary) !important;
    background-color: var(--color-surface-quaternary);
}

/* Enhanced navbar toggler */
.navbar-toggler {
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xs);
    background-color: transparent;
    transition: all var(--transition-base);
}

.navbar-toggler:hover,
.navbar-toggler:focus {
    border-color: var(--color-border-focus);
    background-color: var(--color-surface-tertiary);
    box-shadow: var(--shadow-sm);
}

.navbar-toggler-icon {
    background-image: none;
    width: 1.5em;
    height: 1.5em;
    position: relative;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after,
.navbar-toggler-icon {
    background: var(--color-text-primary);
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
}

.navbar-toggler-icon::before {
    top: 0.25em;
}

.navbar-toggler-icon::after {
    bottom: 0.25em;
}

/* Container adjustments for navbar */
.navbar .container {
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* Responsive navbar adjustments */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background-color: var(--color-surface-elevated);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-lg);
        margin-top: var(--space-md);
        padding: var(--space-lg);
        box-shadow: var(--shadow-lg);
    }
    
    .navbar-nav .nav-link {
        padding: var(--space-md) var(--space-lg);
        margin: var(--space-xs) 0;
    }
}

/* =============================================================================
   ENHANCED LAYOUT COMPONENTS
   ============================================================================= */

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

.layout-header {
    flex-shrink: 0;
    position: sticky;
    top: 0;
    z-index: 1020;
}

.layout-main {
    flex: 1 0 auto;
    padding: var(--space-xl) var(--container-padding);
    margin-top: var(--space-lg);
}

/* Enhanced container variations with better responsive behavior */
.container-base {
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-base);
    padding: var(--space-3xl);
    margin-top: var(--space-3xl);
    width: min(92%, 1200px);
    margin-inline: auto;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.container-base:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.container-wide {
    background-color: var(--color-surface-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
    padding: var(--space-2xl);
    margin-top: var(--space-2xl);
    width: min(96%, 1400px);
    margin-inline: auto;
    border: 1px solid var(--color-border);
}

.container-elevated {
    background-color: var(--color-surface-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-3xl);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}

.container-elevated::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--accent-primary), 
        transparent);
    opacity: 0.6;
}

/* Enhanced auth container system for better responsive behavior */
.container-auth {
    background-color: var(--color-surface-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-3xl);
    border: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
    max-width: min(480px, calc(100vw - 2rem));
    margin: var(--space-4xl) auto;
    width: 100%;
}

.container-auth::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--accent-primary), 
        transparent);
    opacity: 0.6;
}

.container-auth--wide {
    max-width: min(520px, calc(100vw - 2rem));
}

/* Mobile optimizations for auth containers */
@media (max-width: 575.98px) {
    .container-auth,
    .container-auth--wide {
        margin: var(--space-2xl) var(--space-lg);
        max-width: none;
        padding: var(--space-2xl);
        border-radius: var(--radius-lg);
    }
    
    .container-auth .text-4xl,
    .container-auth--wide .text-4xl {
        font-size: var(--font-size-3xl); /* Slightly smaller on mobile */
    }
}

/* Main content container */
.container {
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* =============================================================================
   ENHANCED FORM SYSTEM
   ============================================================================= */

/* Enhanced focus states with better accessibility */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 
        0 0 0 0.125rem var(--color-surface-primary),
        0 0 0 0.3rem var(--accent-primary);
    outline: none;
    border-color: var(--accent-primary);
}

/* Enhanced form floating labels */
.form-floating > .form-control::placeholder,
.form-floating > .form-control-plaintext::placeholder {
    color: var(--color-text-muted);
    text-align: end;
    transition: all var(--transition-base);
    opacity: 0.8;
}

.form-floating > .form-control:focus::placeholder,
.form-floating > .form-control-plaintext:focus::placeholder {
    text-align: start;
    color: var(--color-text-secondary);
    opacity: 0.6;
}

.form-floating > label {
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.form-floating > .form-control:focus ~ label,
.form-floating > .form-control:not(:placeholder-shown) ~ label {
    color: var(--accent-primary);
    transform: scale(0.85) translateY(-0.25rem);
}

/* Enhanced form controls with better sizing */
.form-control {
    background-color: var(--color-surface-primary);
    border: 2px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-base);
    line-height: 1.5;
    min-height: var(--button-height-md);
    transition: var(--transition-base);
}

/* Form section grouping for better visual hierarchy */
.form-section {
    position: relative;
}

.form-section:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: -1.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2rem;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--color-border), 
        transparent);
    opacity: 0.4;
}

.form-control:focus {
    background-color: var(--color-surface-primary);
    border-color: var(--accent-primary);
    color: var(--color-text-primary);
    transform: translateY(-1px);
    box-shadow: 
        0 4px 12px color-mix(in srgb, var(--accent-primary) 15%, transparent),
        0 0 0 3px color-mix(in srgb, var(--accent-primary) 10%, transparent);
    outline: none;
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--color-surface-quaternary);
    color: var(--color-text-muted);
    border-color: var(--color-border);
    opacity: 0.8;
}

/* Enhanced form control sizes */
.form-control.form-control-sm {
    min-height: var(--button-height-sm);
    padding: var(--space-sm) var(--space-md);
    font-size: var(--font-size-sm);
}

.form-control.form-control-lg {
    min-height: var(--button-height-lg);
    padding: var(--space-lg) var(--space-xl);
    font-size: var(--font-size-lg);
}

/* Enhanced form labels */
.form-label {
    color: var(--color-text-primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
    display: block;
}

/* Form validation states */
.form-control.is-valid {
    border-color: var(--accent-success);
    background-image: none;
    animation: validPulse 0.6s ease-out;
}

.form-control.is-invalid {
    border-color: var(--accent-danger);
    background-image: none;
    animation: invalidShake 0.6s ease-out;
}

@keyframes validPulse {
    0% {
        box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-success) 20%, transparent);
    }
    70% {
        box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent-success) 0%, transparent);
    }
    100% {
        box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent-success) 0%, transparent);
    }
}

@keyframes invalidShake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-0.5rem);
    }
    75% {
        transform: translateX(0.5rem);
    }
}

.valid-feedback {
    color: var(--accent-success);
    font-size: var(--font-size-sm);
    animation: fadeInUp 0.3s ease-out;
}

.invalid-feedback {
    color: var(--accent-danger);
    font-size: var(--font-size-sm);
    animation: shakeIn 0.5s ease-out;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(0.25rem);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shakeIn {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-0.25rem);
    }
    75% {
        transform: translateX(0.25rem);
    }
}

/* Enhanced checkbox styling for Apple-like appearance */
.form-check-input {
    width: 1.125rem;
    height: 1.125rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface-primary);
    transition: var(--transition-base);
}

.form-check-input:checked {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 15%, transparent);
    border-color: var(--accent-primary);
    outline: none;
}

.form-check-label {
    margin-left: var(--space-sm);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

/* Enhanced link micro-interactions */
.forgot-password-link {
    position: relative;
    transition: all var(--transition-base);
}

.forgot-password-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--accent-primary);
    transition: width var(--transition-base);
}

.forgot-password-link:hover::after {
    width: 100%;
}

.forgot-password-link:hover {
    transform: translateY(-1px);
    color: var(--accent-primary-hover) !important;
}

/* =============================================================================
   ENHANCED TYPOGRAPHY SYSTEM
   ============================================================================= */

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.025em;
}

h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
    h1 {
        font-size: var(--font-size-5xl);
    }
}

h2 {
    font-size: var(--font-size-3xl);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-xl);
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--space-lg);
}

h4 {
    font-size: var(--font-size-xl);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

h5 {
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin-bottom: var(--space-md);
}

h6 {
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Enhanced paragraph styles */
p {
    margin-bottom: var(--space-lg);
    line-height: 1.7;
    color: var(--color-text-primary);
}

/* Lead text */
.lead {
    font-size: var(--font-size-lg);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* Text utilities with enhanced colors */
.text-muted {
    color: var(--color-text-muted) !important;
}

.text-secondary {
    color: var(--color-text-secondary) !important;
}

.text-primary-custom {
    color: var(--color-text-primary) !important;
}

.text-accent {
    color: var(--accent-primary) !important;
}

/* Enhanced text sizes */
.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }

/* Links */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover,
a:focus {
    color: var(--accent-primary-hover);
    text-decoration: underline;
}

/* Code elements */
code {
    background-color: var(--color-surface-tertiary);
    color: var(--accent-primary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.875em;
}

pre {
    background-color: var(--color-surface-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    overflow-x: auto;
}

/* Blockquotes */
blockquote {
    border-left: 4px solid var(--accent-primary);
    padding-left: var(--space-lg);
    margin-left: 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

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

/* Background utilities with hover states */
.bg-surface-primary { 
    background-color: var(--color-surface-primary); 
    transition: background-color var(--transition-base);
}
.bg-surface-secondary { 
    background-color: var(--color-surface-secondary); 
    transition: background-color var(--transition-base);
}
.bg-surface-tertiary { 
    background-color: var(--color-surface-tertiary); 
    transition: background-color var(--transition-base);
}
.bg-surface-quaternary { 
    background-color: var(--color-surface-quaternary); 
    transition: background-color var(--transition-base);
}
.bg-surface-elevated { 
    background-color: var(--color-surface-elevated); 
    transition: background-color var(--transition-base);
}

/* Text color utilities */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-inverse { color: var(--color-text-inverse); }

/* Border utilities with enhanced variations */
.border-base { border: 1px solid var(--color-border); }
.border-focus { border: 1px solid var(--color-border-focus); }
.border-navbar { border: 1px solid var(--color-border-navbar); }
.border-2 { border-width: 2px; }
.border-3 { border-width: 3px; }

/* Enhanced spacing utilities */
.space-xs { padding: var(--space-xs); }
.space-sm { padding: var(--space-sm); }
.space-md { padding: var(--space-md); }
.space-lg { padding: var(--space-lg); }
.space-xl { padding: var(--space-xl); }
.space-2xl { padding: var(--space-2xl); }
.space-3xl { padding: var(--space-3xl); }

/* Margin utilities */
.m-xs { margin: var(--space-xs); }
.m-sm { margin: var(--space-sm); }
.m-md { margin: var(--space-md); }
.m-lg { margin: var(--space-lg); }
.m-xl { margin: var(--space-xl); }
.m-2xl { margin: var(--space-2xl); }

/* Padding utilities */
.p-xs { padding: var(--space-xs); }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }
.p-xl { padding: var(--space-xl); }
.p-2xl { padding: var(--space-2xl); }

/* Enhanced shadow utilities */
.shadow-xs { box-shadow: var(--shadow-xs); }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-base { box-shadow: var(--shadow-base); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-none { box-shadow: none; }

/* Border radius utilities */
.rounded-xs { border-radius: var(--radius-xs); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Flexbox utilities */
.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }
.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Display utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

/* Position utilities */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* =============================================================================
   ENHANCED COMPONENT STYLES
   ============================================================================= */

/* Enhanced Cards */
.card {
    background-color: var(--color-surface-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-border-focus);
}

.card-header {
    background-color: var(--color-surface-tertiary);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg) var(--space-xl);
    font-weight: 600;
}

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

.card-footer {
    background-color: var(--color-surface-tertiary);
    border-top: 1px solid var(--color-border);
    padding: var(--space-lg) var(--space-xl);
}

/* Enhanced Tables */
.table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--color-text-primary);
    --bs-table-striped-color: var(--color-text-primary);
    --bs-table-striped-bg: var(--color-surface-tertiary);
    --bs-table-hover-color: var(--color-text-primary);
    --bs-table-hover-bg: var(--color-surface-quaternary);
    --bs-table-border-color: var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.table th {
    background-color: var(--color-surface-tertiary);
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-border);
    padding: var(--space-lg);
}

.table td {
    padding: var(--space-lg);
    vertical-align: middle;
}

/* Enhanced Modals */
.modal-content {
    background-color: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-xl);
}

.modal-header {
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-xl);
}

.modal-body {
    padding: var(--space-xl);
}

.modal-footer {
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl);
}

/* Enhanced Dropdowns */
.dropdown-menu {
    background-color: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--space-sm);
    min-width: 12rem;
}

.dropdown-item {
    color: var(--color-text-primary);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    font-size: var(--font-size-sm);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--color-surface-quaternary);
    color: var(--color-text-primary);
    transform: translateX(2px);
}

.dropdown-item.active {
    background-color: var(--accent-primary);
    color: var(--color-text-inverse);
}

/* Enhanced Buttons */
.btn {
    font-weight: 500;
    border-radius: var(--radius-md);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--font-size-base);
    line-height: 1.5;
    transition: all var(--transition-base);
    border-width: 2px;
    min-height: var(--button-height-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
}

.btn-secondary {
    background-color: var(--color-surface-tertiary);
    border-color: var(--color-border);
    color: var(--color-text-primary);
}

.btn-secondary:hover {
    background-color: var(--color-surface-quaternary);
    border-color: var(--color-border-focus);
}

.btn-outline-primary {
    background-color: transparent;
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-outline-primary:hover {
    background-color: var(--accent-primary);
    color: white;
}

/* Button sizes */
.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-sm);
    min-height: var(--button-height-sm);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: var(--font-size-lg);
    min-height: var(--button-height-lg);
}

/* Enhanced Alerts */
.alert {
    border-radius: var(--radius-lg);
    border: 1px solid;
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.alert-animated {
    animation: alertSlideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: top;
}

@keyframes alertSlideIn {
    0% {
        opacity: 0;
        transform: translateY(-1rem) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.alert-primary {
    background-color: color-mix(in srgb, var(--accent-primary) 10%, var(--color-surface-primary));
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.alert-success {
    background-color: color-mix(in srgb, var(--accent-success) 10%, var(--color-surface-primary));
    border-color: var(--accent-success);
    color: var(--accent-success);
}

.alert-warning {
    background-color: color-mix(in srgb, var(--accent-warning) 10%, var(--color-surface-primary));
    border-color: var(--accent-warning);
    color: var(--accent-warning);
}

.alert-danger {
    background-color: color-mix(in srgb, var(--accent-danger) 10%, var(--color-surface-primary));
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

/* =============================================================================
   ENHANCED CUSTOM COMPONENTS
   ============================================================================= */

/* Enhanced Action Buttons with better sizing and states */
.action-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    min-height: var(--button-height-md);
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    background: transparent;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.action-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left var(--transition-slow);
}

.action-button:hover::before {
    left: 100%;
}

.action-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.action-button:active {
    transform: translateY(0);
}

.action-button--primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    font-weight: 600;
    letter-spacing: -0.01em;
    box-shadow: var(--shadow-sm);
}

.action-button--primary:hover {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
    color: white;
    box-shadow: 0 4px 16px color-mix(in srgb, var(--accent-primary) 35%, transparent);
    transform: translateY(-1px);
}

.action-button--primary:active {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
    transform: translateY(0);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--accent-primary) 25%, transparent);
}

/* Button loading states and micro-interactions */
.button-spinner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.spinning {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.action-button.loading .button-text,
.action-button.loading .button-icon {
    display: none;
}

.action-button.loading .button-spinner {
    display: flex !important;
}

.action-button.loading {
    pointer-events: none;
    opacity: 0.8;
}

.action-button--success {
    border-color: var(--accent-success);
    color: var(--accent-success);
}

.action-button--success:hover {
    background-color: var(--accent-success);
    color: white;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--accent-success) 40%, transparent);
}

.action-button--warning {
    border-color: var(--accent-warning);
    color: var(--accent-warning);
}

.action-button--warning:hover {
    background-color: var(--accent-warning);
    color: white;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--accent-warning) 40%, transparent);
}

.action-button--danger {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.action-button--danger:hover {
    background-color: var(--accent-danger);
    color: white;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--accent-danger) 40%, transparent);
}

/* Button size variations */
.action-button--sm {
    padding: var(--space-sm) var(--space-lg);
    min-height: var(--button-height-sm);
    font-size: var(--font-size-sm);
}

.action-button--lg {
    padding: var(--space-lg) var(--space-2xl);
    min-height: var(--button-height-lg);
    font-size: var(--font-size-lg);
    font-weight: 600;
    border-radius: var(--radius-lg);
}

/* Enhanced Theme Toggle */
.theme-toggle {
    position: fixed;
    bottom: var(--space-2xl);
    right: var(--space-xl);
    z-index: 1050;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-full);
    border: 2px solid var(--color-border);
    background-color: var(--color-surface-elevated);
    color: var(--color-text-primary);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    backdrop-filter: blur(8px);
}

.theme-toggle:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.theme-toggle:active {
    transform: translateY(-1px) scale(1.02);
}

/* Enhanced Navigation Brand */
.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced Progress Bars */
.progress {
    background-color: var(--color-surface-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.1);
}

.progress-bar {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-info));
    transition: width var(--transition-slow);
}

/* Enhanced Badges */
.badge {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-primary {
    background-color: var(--accent-primary);
    color: white;
}

.badge-secondary {
    background-color: var(--color-surface-quaternary);
    color: var(--color-text-primary);
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        var(--color-surface-quaternary), 
        transparent);
    animation: loading-shimmer 1.5s infinite;
}

@keyframes loading-shimmer {
    to {
        left: 100%;
    }
}

/* Enhanced Tooltips */
.tooltip-wrapper {
    position: relative;
    display: inline-block;
}

.tooltip-content {
    position: absolute;
    background-color: var(--color-surface-elevated);
    color: var(--color-text-primary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    white-space: nowrap;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    transform: translateY(4px);
}

.tooltip-wrapper:hover .tooltip-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* =============================================================================
   ENHANCED RESPONSIVE DESIGN
   ============================================================================= */

/* Mobile-first responsive containers */
@media (max-width: 575.98px) {
    .container-base,
    .container-wide {
        margin-top: var(--space-lg);
        padding: var(--space-lg);
        width: 95%;
        border-radius: var(--radius-md);
    }
    
    .layout-main {
        padding: var(--space-md);
    }
    
    .navbar .container {
        padding-left: var(--space-lg);
        padding-right: var(--space-lg);
    }
    
    .navbar-brand {
        font-size: var(--font-size-lg);
    }
    
    .theme-toggle {
        bottom: var(--space-lg);
        right: var(--space-md);
        width: 3rem;
        height: 3rem;
    }
    
    h1 {
        font-size: var(--font-size-3xl);
    }
    
    h2 {
        font-size: var(--font-size-2xl);
    }
    
    .action-button {
        padding: var(--space-sm) var(--space-lg);
        font-size: var(--font-size-sm);
    }
}

@media (min-width: 576px) and (max-width: 767.98px) {
    .container-base,
    .container-wide {
        width: 90%;
        padding: var(--space-xl);
    }
}

@media (min-width: 768px) and (max-width: 991.98px) {
    .container-base {
        width: 85%;
        padding: var(--space-2xl);
    }
    
    .container-wide {
        width: 92%;
    }
}

@media (min-width: 992px) {
    .container-base {
        max-width: 1200px;
    }
    
    .container-wide {
        max-width: 1400px;
    }
    
    .navbar-nav .nav-link {
        margin: 0 var(--space-sm);
    }
}

/* High-resolution display optimizations */
@media (min-resolution: 2dppx) {
    body {
        -webkit-font-smoothing: subpixel-antialiased;
    }
}

/* Print styles */
@media print {
    .navbar,
    .theme-toggle,
    .action-button {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .container-base,
    .container-wide,
    .container-elevated {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        background: white !important;
    }
}

/* Large screen optimizations */
@media (min-width: 1400px) {
    html {
        font-size: 18px;
    }
    
    .container-base {
        max-width: 1300px;
    }
    
    .container-wide {
        max-width: 1600px;
    }
}

/* =============================================================================
   DARK MODE SPECIFIC ENHANCEMENTS
   ============================================================================= */

@media (prefers-color-scheme: dark) {
    /* Enhanced dark mode shadows */
    :root {
        --shadow-sm: 0 1px 3px 0 hsl(0 0% 0% / 0.3), 0 1px 2px -1px hsl(0 0% 0% / 0.3);
        --shadow-base: 0 2px 4px 0 hsl(0 0% 0% / 0.4), 0 1px 3px -1px hsl(0 0% 0% / 0.4);
        --shadow-md: 0 4px 8px -1px hsl(0 0% 0% / 0.5), 0 2px 4px -2px hsl(0 0% 0% / 0.5);
        --shadow-lg: 0 8px 16px -3px hsl(0 0% 0% / 0.6), 0 4px 6px -4px hsl(0 0% 0% / 0.6);
        --shadow-xl: 0 12px 24px -6px hsl(0 0% 0% / 0.7), 0 8px 12px -8px hsl(0 0% 0% / 0.7);
    }
    
    /* Enhanced scrollbar styling for dark mode */
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    
    ::-webkit-scrollbar-track {
        background: var(--color-surface-tertiary);
    }
    
    ::-webkit-scrollbar-thumb {
        background: var(--color-surface-quaternary);
        border-radius: var(--radius-full);
    }
    
    ::-webkit-scrollbar-thumb:hover {
        background: var(--accent-primary);
    }
}

/* Light mode scrollbar */
@media (prefers-color-scheme: light) {
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    
    ::-webkit-scrollbar-track {
        background: var(--color-surface-secondary);
    }
    
    ::-webkit-scrollbar-thumb {
        background: var(--color-surface-quaternary);
        border-radius: var(--radius-full);
    }
    
    ::-webkit-scrollbar-thumb:hover {
        background: var(--accent-primary);
    }
}

/* =============================================================================
   ENHANCED LAYOUT SYSTEM - FULL WIDTH APPROACH
   ============================================================================= */

/* Remove container max-width constraints for full-width sections */
.hero-section,
.features-section,
.technology-section,
section[id] {
    width: 100%;
    padding: var(--space-4xl) 0;
    margin: 0;
}

/* Content constraint wrapper - only constrains text content, not backgrounds */
.content-container {
    max-width: min(90%, 1200px);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Wide content for sections that need more breathing room */
.content-container--wide {
    max-width: min(95%, 1400px);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Override existing container classes for landing pages */
.container-elevated {
    max-width: none !important;
    margin: 0 !important;
    padding: var(--space-4xl) 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
}

.container-base {
    max-width: none !important;
    margin: 0 !important;
    padding: var(--space-4xl) 0 !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border: none !important;
    background: transparent !important;
}

/* =============================================================================
   ENHANCED SECTION BACKGROUNDS
   ============================================================================= */

/* Subtle gradient backgrounds instead of contained blocks */
.hero-section {
    background: linear-gradient(135deg, 
        var(--color-surface-primary) 0%, 
        var(--color-surface-secondary) 50%,
        var(--color-surface-primary) 100%);
    border-bottom: 1px solid var(--color-border);
}

.features-section {
    background: var(--color-surface-secondary);
    border-bottom: 1px solid var(--color-border);
}

.technology-section {
    background: linear-gradient(180deg, 
        var(--color-surface-secondary) 0%, 
        var(--color-surface-tertiary) 100%);
    border-bottom: 1px solid var(--color-border);
}

/* How it works section with subtle background */
section#how-it-works {
    background: var(--color-surface-primary);
    position: relative;
}

/* Dark mode overrides for section backgrounds to eliminate gradient clashing */
@media (prefers-color-scheme: dark) {
    .hero-section {
        background: var(--color-surface-primary);
    }
    
    .technology-section {
        background: var(--color-surface-secondary);
    }
}

[data-theme="dark"] .hero-section {
    background: var(--color-surface-primary);
}

[data-theme="dark"] .technology-section {
    background: var(--color-surface-secondary);
}

section#how-it-works::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, 
        color-mix(in srgb, var(--accent-primary) 3%, transparent) 0%,
        transparent 50%);
    pointer-events: none;
}

/* Extension CTA section */
section#extension {
    background: linear-gradient(135deg,
        var(--color-surface-primary) 0%,
        color-mix(in srgb, var(--accent-primary) 2%, var(--color-surface-secondary)) 50%,
        var(--color-surface-primary) 100%);
    position: relative;
}

/* =============================================================================
   ENHANCED CARD SYSTEM - MINIMAL BACKGROUNDS
   ============================================================================= */

/* Remove heavy backgrounds from cards, use subtle borders */
.feature-card {
    background: transparent !important;
    border: 1px solid var(--color-border) !important;
    box-shadow: none !important;
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--accent-primary) !important;
    background: color-mix(in srgb, var(--accent-primary) 2%, transparent) !important;
    transform: translateY(-4px);
    box-shadow: 0 8px 24px color-mix(in srgb, var(--accent-primary) 8%, transparent) !important;
}

.tech-card {
    background: transparent !important;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.tech-card:hover {
    background: color-mix(in srgb, var(--accent-primary) 2%, transparent) !important;
    border-color: var(--color-border);
    transform: translateY(-2px);
}

/* Extension popup styling - keep elevated feel but cleaner */
.extension-popup,
.chisl-popup {
    background: var(--color-surface-elevated) !important;
    border: 1px solid var(--color-border) !important;
    box-shadow: 0 12px 32px color-mix(in srgb, var(--color-text-primary) 8%, transparent) !important;
}

/* Demo browser window with cleaner styling */
.demo-browser-window {
    background: var(--color-surface-elevated) !important;
    border: 1px solid var(--color-border) !important;
    box-shadow: 0 8px 24px color-mix(in srgb, var(--color-text-primary) 6%, transparent) !important;
}

/* =============================================================================
   RESPONSIVE FULL-WIDTH ADJUSTMENTS
   ============================================================================= */

/* Mobile adjustments */
@media (max-width: 767.98px) {
    .hero-section,
    .features-section,
    .technology-section,
    section[id] {
        padding: var(--space-3xl) 0;
    }
    
    .content-container,
    .content-container--wide {
        padding: 0 var(--space-lg);
        max-width: 100%;
    }
    
    /* Reduce section spacing on mobile */
    .feature-card,
    .tech-card {
        margin-bottom: var(--space-lg);
    }
}

/* Tablet adjustments */
@media (min-width: 768px) and (max-width: 1199.98px) {
    .content-container {
        max-width: min(92%, 1000px);
    }
    
    .content-container--wide {
        max-width: min(96%, 1200px);
    }
}

/* Large screen optimizations */
@media (min-width: 1200px) {
    .hero-section {
        padding: var(--space-4xl) 0 var(--space-4xl) 0;
    }
    
    .content-container {
        max-width: min(85%, 1200px);
    }
    
    .content-container--wide {
        max-width: min(90%, 1400px);
    }
}

/* Ultra-wide screens */
@media (min-width: 1600px) {
    .content-container {
        max-width: min(80%, 1400px);
    }
    
    .content-container--wide {
        max-width: min(85%, 1600px);
    }
}

/* =============================================================================
   LAYOUT SPACING IMPROVEMENTS
   ============================================================================= */

/* Better section spacing */
section + section {
    border-top: none;
}

/* Hero content improvements */
.hero-content {
    padding: 0;
}

.hero-visual {
    padding: var(--space-xl) 0;
}

/* Feature grid improvements */
.features-section .row {
    margin: 0;
}

.features-section .col-md-6,
.features-section .col-lg-3 {
    padding: var(--space-md);
}

/* Extension CTA improvements */
.extension-cta-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* =============================================================================
   NAVIGATION ADJUSTMENTS FOR FULL-WIDTH
   ============================================================================= */

/* Ensure navbar content is properly constrained */
.navbar .container {
    max-width: min(90%, 1400px);
    margin: 0 auto;
}

/* Better navbar spacing on full-width design */
.navbar {
    border-bottom: 1px solid var(--color-border-navbar);
    backdrop-filter: blur(12px);
    background-color: color-mix(in srgb, var(--color-surface-navbar) 95%, transparent) !important;
}

/* =============================================================================
   UTILITY CLASSES FOR FULL-WIDTH DESIGN
   ============================================================================= */

/* Section background utilities */
.section-bg-none {
    background: transparent !important;
}

.section-bg-subtle {
    background: color-mix(in srgb, var(--accent-primary) 1%, var(--color-surface-primary)) !important;
}

.section-bg-gradient {
    background: linear-gradient(135deg, 
        var(--color-surface-primary) 0%, 
        var(--color-surface-secondary) 100%) !important;
}

/* Content width utilities */
.content-narrow {
    max-width: min(85%, 800px);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.content-standard {
    max-width: min(90%, 1200px);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.content-wide {
    max-width: min(95%, 1400px);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.content-full {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* Card variant utilities */
.card-transparent {
    background: transparent !important;
    border: 1px solid var(--color-border) !important;
    box-shadow: none !important;
}

.card-minimal {
    background: color-mix(in srgb, var(--color-surface-secondary) 50%, transparent) !important;
    border: 1px solid color-mix(in srgb, var(--color-border) 50%, transparent) !important;
    backdrop-filter: blur(8px);
}

/* =============================================================================
   ENHANCED VISUAL HIERARCHY
   ============================================================================= */

/* Better text contrast on full-width backgrounds */
.hero-section h1,
.hero-section .display-3 {
    text-shadow: 0 1px 3px color-mix(in srgb, var(--color-text-primary) 10%, transparent);
}

.hero-section .lead {
    opacity: 0.9;
}

/* Feature icons with better integration */
.feature-icon {
    background: color-mix(in srgb, var(--accent-primary) 8%, transparent) !important;
    border: 1px solid color-mix(in srgb, var(--accent-primary) 15%, transparent);
}

/* Tech icons with subtle backgrounds */
.tech-icon {
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

.tech-card:hover .tech-icon {
    opacity: 1;
}

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

/* Ensure proper contrast on full-width backgrounds */
@media (prefers-contrast: high) {
    .feature-card,
    .tech-card {
        border-width: 2px !important;
        background: var(--color-surface-primary) !important;
    }
    
    .hero-section,
    .features-section,
    .technology-section {
        background: var(--color-surface-primary) !important;
    }
}

/* Enhanced focus visibility on full-width sections */
.hero-section a:focus-visible,
.features-section a:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* =============================================================================
   PRINT STYLES FOR FULL-WIDTH
   ============================================================================= */

@media print {
    .hero-section,
    .features-section,
    .technology-section {
        background: white !important;
        box-shadow: none !important;
        border: none !important;
    }
    
    .content-container,
    .content-container--wide {
        max-width: 100% !important;
        padding: 0 !important;
    }
}