/* ========================================
   DESA DIGITAL DESIGN SYSTEM v2.0 - OPTIMIZED
   Production-ready, minified, performance-optimized
   ======================================== */

/* Critical CSS - Above the fold */
:root{--color-primary-500:#667eea;--color-primary-600:#5a67d8;--color-primary-700:#4c51bf;--color-secondary-500:#d946ef;--color-secondary-600:#c026d3;--color-neutral-0:#fff;--color-neutral-50:#f9fafb;--color-neutral-100:#f3f4f6;--color-neutral-200:#e5e7eb;--color-neutral-300:#d1d5db;--color-neutral-400:#9ca3af;--color-neutral-500:#6b7280;--color-neutral-600:#4b5563;--color-neutral-700:#374151;--color-neutral-800:#1f2937;--color-neutral-900:#111827;--color-success-500:#10b981;--color-warning-500:#f59e0b;--color-error-500:#ef4444;--color-info-500:#3b82f6;--gradient-primary:linear-gradient(135deg,var(--color-primary-500) 0%,var(--color-primary-700) 100%);--gradient-secondary:linear-gradient(135deg,var(--color-secondary-500) 0%,var(--color-secondary-600) 100%);--gradient-hero:linear-gradient(135deg,var(--color-primary-600) 0%,var(--color-secondary-600) 50%,var(--color-primary-700) 100%);--font-sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;--font-display:'Poppins',var(--font-sans);--text-xs:clamp(.75rem,.7rem + .25vw,.875rem);--text-sm:clamp(.875rem,.8rem + .375vw,1rem);--text-base:clamp(1rem,.9rem + .5vw,1.125rem);--text-lg:clamp(1.125rem,1rem + .625vw,1.25rem);--text-xl:clamp(1.25rem,1.1rem + .75vw,1.5rem);--text-2xl:clamp(1.5rem,1.3rem + 1vw,1.875rem);--text-3xl:clamp(1.875rem,1.6rem + 1.375vw,2.25rem);--text-4xl:clamp(2.25rem,1.9rem + 1.75vw,3rem);--text-5xl:clamp(3rem,2.5rem + 2.5vw,4rem);--text-6xl:clamp(4rem,3rem + 5vw,6rem);--font-normal:400;--font-medium:500;--font-semibold:600;--font-bold:700;--font-extrabold:800;--leading-tight:1.25;--leading-normal:1.5;--leading-relaxed:1.625;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--space-20:5rem;--space-24:6rem;--radius-sm:.125rem;--radius-base:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--radius-xl:.75rem;--radius-2xl:1rem;--radius-3xl:1.5rem;--radius-full:9999px;--shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);--shadow-base:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px 0 rgba(0,0,0,.06);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--glass-bg:rgba(255,255,255,.1);--glass-bg-strong:rgba(255,255,255,.15);--glass-border:rgba(255,255,255,.2);--glass-blur:blur(20px);--shadow-glass:0 8px 32px rgba(0,0,0,.12),inset 0 1px 0 rgba(255,255,255,.2);--shadow-glass-hover:0 16px 48px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.3);--transition-fast:150ms cubic-bezier(.4,0,.2,1);--transition-normal:300ms cubic-bezier(.4,0,.2,1);--transition-slow:500ms cubic-bezier(.4,0,.2,1);--z-dropdown:1000;--z-sticky:1020;--z-fixed:1030;--z-modal:1050}

/* Dark mode variables */
[data-theme="dark"]{--color-neutral-0:#030712;--color-neutral-50:#111827;--color-neutral-100:#1f2937;--color-neutral-200:#374151;--color-neutral-300:#4b5563;--color-neutral-400:#6b7280;--color-neutral-500:#9ca3af;--color-neutral-600:#d1d5db;--color-neutral-700:#e5e7eb;--color-neutral-800:#f3f4f6;--color-neutral-900:#f9fafb;--color-neutral-950:#fff;--glass-bg:rgba(0,0,0,.2);--glass-bg-strong:rgba(0,0,0,.3);--glass-border:rgba(255,255,255,.1);--shadow-glass:0 8px 32px rgba(0,0,0,.3),inset 0 1px 0 rgba(255,255,255,.1);--shadow-glass-hover:0 16px 48px rgba(0,0,0,.4),inset 0 1px 0 rgba(255,255,255,.2)}

/* Reset & Base */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);font-size:var(--text-base);font-weight:var(--font-normal);line-height:var(--leading-normal);color:var(--color-neutral-800);background:var(--gradient-hero);min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;font-feature-settings:'kern' 1,'liga' 1,'calt' 1}

/* Typography */
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:var(--font-bold);line-height:var(--leading-tight);letter-spacing:-.025em;color:var(--color-neutral-900);margin-bottom:var(--space-4)}h1{font-size:var(--text-5xl)}h2{font-size:var(--text-4xl)}h3{font-size:var(--text-3xl)}h4{font-size:var(--text-2xl)}h5{font-size:var(--text-xl)}h6{font-size:var(--text-lg)}p{margin-bottom:var(--space-4);line-height:var(--leading-relaxed)}a{color:var(--color-primary-600);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-700)}

/* Layout */
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--space-4)}@media (min-width:640px){.container{padding:0 var(--space-6)}}@media (min-width:1024px){.container{padding:0 var(--space-8)}}

/* Grid System */
.grid{display:grid;gap:var(--space-6)}.grid-responsive{display:grid;gap:var(--space-6);grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}

/* Glass Card Component */
.glass-card{background:var(--glass-bg);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-glass);padding:var(--space-6);transition:all var(--transition-normal);position:relative;overflow:hidden;transform:translateZ(0);backface-visibility:hidden}.glass-card::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left var(--transition-slow)}.glass-card:hover{background:var(--glass-bg-strong);border-color:rgba(255,255,255,.3);box-shadow:var(--shadow-glass-hover);transform:translateY(-4px)}.glass-card:hover::before{left:100%}

/* Button Component */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:var(--font-display);font-size:var(--text-base);font-weight:var(--font-semibold);line-height:1;border:none;border-radius:var(--radius-full);cursor:pointer;transition:all var(--transition-fast);text-decoration:none;position:relative;overflow:hidden;min-height:44px;transform:translateZ(0)}.btn::before{content:'';position:absolute;top:50%;left:50%;width:0;height:0;background:rgba(255,255,255,.3);border-radius:50%;transform:translate(-50%,-50%);transition:width .6s,height .6s}.btn:active::before{width:300px;height:300px}.btn--primary{background:var(--gradient-primary);color:var(--color-neutral-0);box-shadow:var(--shadow-md)}.btn--primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn--secondary{background:var(--glass-bg);backdrop-filter:var(--glass-blur);border:2px solid var(--color-primary-500);color:var(--color-primary-600)}.btn--secondary:hover{background:var(--gradient-primary);color:var(--color-neutral-0);border-color:transparent}.btn--ghost{background:transparent;color:var(--color-primary-600);border:1px solid var(--color-primary-200)}.btn--ghost:hover{background:var(--color-primary-50);border-color:var(--color-primary-300)}.btn--sm{padding:var(--space-2) var(--space-4);font-size:var(--text-sm);min-height:36px}.btn--lg{padding:var(--space-4) var(--space-8);font-size:var(--text-lg);min-height:52px}

/* Section Component */
.section{padding:var(--space-16) 0;position:relative}.section--sm{padding:var(--space-12) 0}.section--lg{padding:var(--space-24) 0}.section__header{text-align:center;margin-bottom:var(--space-12)}.section__title{font-size:var(--text-4xl);font-weight:var(--font-bold);color:var(--color-neutral-0);text-shadow:0 4px 20px rgba(0,0,0,.3);margin-bottom:var(--space-4)}.section__subtitle{font-size:var(--text-lg);color:rgba(255,255,255,.9);text-shadow:0 2px 10px rgba(0,0,0,.2);max-width:600px;margin:0 auto}

/* Stats Component */
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--space-6)}.stat-card{background:var(--glass-bg);backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border);border-radius:var(--radius-2xl);box-shadow:var(--shadow-glass);padding:var(--space-8);text-align:center;transition:all var(--transition-normal);transform:translateZ(0)}.stat-card:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow-glass-hover)}.stat-number{font-size:var(--text-5xl);font-weight:var(--font-extrabold);background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:var(--space-2);line-height:1}.stat-label{font-size:var(--text-lg);font-weight:var(--font-semibold);color:var(--color-neutral-700);margin-bottom:var(--space-2)}.stat-description{font-size:var(--text-sm);color:var(--color-neutral-600);line-height:var(--leading-relaxed)}

/* Utility Classes */
.text-gradient{background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:var(--font-bold)}.text-white{color:var(--color-neutral-0)}.text-center{text-align:center}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.hidden{display:none}.block{display:block}.gpu-accelerated{transform:translateZ(0);backface-visibility:hidden;perspective:1000px;will-change:transform}

/* Responsive Design */
@media (max-width:639px){.container{padding:0 var(--space-4)}.section{padding:var(--space-12) 0}.section__title{font-size:var(--text-3xl)}.stats-grid{grid-template-columns:1fr;gap:var(--space-4)}.stat-card{padding:var(--space-6)}.stat-number{font-size:var(--text-4xl)}.btn{min-height:44px;padding:var(--space-3) var(--space-4);font-size:var(--text-sm)}}@media (min-width:640px) and (max-width:1023px){.stats-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.stats-grid{grid-template-columns:repeat(3,1fr)}}@media (min-width:1280px){.stats-grid{grid-template-columns:repeat(4,1fr)}}

/* Animations */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInLeft{from{opacity:0;transform:translateX(-30px)}to{opacity:1;transform:translateX(0)}}@keyframes fadeInRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}@keyframes scaleIn{from{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}.animate-fade-in-up{animation:fadeInUp .6s cubic-bezier(.4,0,.2,1) forwards}.animate-fade-in-left{animation:fadeInLeft .6s cubic-bezier(.4,0,.2,1) forwards}.animate-fade-in-right{animation:fadeInRight .6s cubic-bezier(.4,0,.2,1) forwards}.animate-scale-in{animation:scaleIn .6s cubic-bezier(.4,0,.2,1) forwards}.animate-delay-100{animation-delay:100ms}.animate-delay-200{animation-delay:200ms}.animate-delay-300{animation-delay:300ms}.animate-delay-400{animation-delay:400ms}

/* Accessibility */
.btn:focus-visible,.glass-card:focus-visible{outline:2px solid var(--color-primary-500);outline-offset:2px}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}@media (prefers-contrast:high){.glass-card{background:var(--color-neutral-0);border:2px solid var(--color-neutral-900)}.btn--primary{background:var(--color-neutral-900);border:2px solid var(--color-neutral-900)}}

/* Performance optimizations */
@media (hover:none) and (pointer:coarse){.btn:hover,.glass-card:hover,.stat-card:hover{transform:none}.btn:active{transform:scale(.95);transition:transform .1s ease}.glass-card:active,.stat-card:active{transform:scale(.98);transition:transform .1s ease}}

/* Critical path optimization */
.above-fold{contain:layout style paint}@supports not (backdrop-filter:blur(20px)){.glass-card{background:rgba(255,255,255,.9);border:1px solid rgba(0,0,0,.1)}[data-theme="dark"] .glass-card{background:rgba(0,0,0,.8);border:1px solid rgba(255,255,255,.1)}}