/* ===== CSS VARIABLES & ROOT STYLES ===== */
:root {
    /* Primary Color Palette - Professional & Modern */
    --primary-color: #0F172A;
    --primary-light: #1E293B;
    --primary-dark: #020617;
    --secondary-color: #3B82F6;
    --secondary-light: #60A5FA;
    --secondary-dark: #1E40AF;
    --accent-color: #06B6D4;
    --accent-light: #22D3EE;
    --accent-dark: #0891B2;
    
    /* Professional Color System */
    --brand-primary: #0F172A;
    --brand-secondary: #3B82F6;
    --brand-accent: #06B6D4;
    --brand-success: #059669;
    --brand-warning: #D97706;
    --brand-error: #DC2626;
    
    /* Professional Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --black: #000000;
    
    /* Professional Gradient System */
    --gradient-primary: linear-gradient(135deg, var(--brand-primary) 0%, var(--primary-light) 50%, var(--brand-secondary) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--brand-secondary) 0%, var(--secondary-light) 50%, var(--brand-accent) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.9) 50%, rgba(59, 130, 246, 0.1) 100%);
    --gradient-text: linear-gradient(135deg, var(--brand-primary) 0%, var(--brand-secondary) 50%, var(--brand-accent) 100%);
    --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(248, 250, 252, 0.95) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    
    /* Professional Typography System */
    --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-secondary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', 'Source Code Pro', monospace;
    
    /* Refined Font Sizes - Professional Scale */
    --text-xs: 0.75rem;     /* 12px */
    --text-sm: 0.875rem;    /* 14px */
    --text-base: 1rem;      /* 16px */
    --text-lg: 1.125rem;    /* 18px */
    --text-xl: 1.25rem;     /* 20px */
    --text-2xl: 1.5rem;     /* 24px */
    --text-3xl: 1.875rem;   /* 30px */
    --text-4xl: 2.25rem;    /* 36px */
    --text-5xl: 3rem;       /* 48px */
    --text-6xl: 3.75rem;    /* 60px */
    --text-7xl: 4.5rem;     /* 72px */
    
    /* Professional Font Weights */
    --font-thin: 100;
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    --font-black: 900;
    
    /* Professional Spacing System */
    --space-px: 1px;
    --space-0: 0;
    --space-1: 0.25rem;     /* 4px */
    --space-2: 0.5rem;      /* 8px */
    --space-3: 0.75rem;     /* 12px */
    --space-4: 1rem;        /* 16px */
    --space-5: 1.25rem;     /* 20px */
    --space-6: 1.5rem;      /* 24px */
    --space-7: 1.75rem;     /* 28px */
    --space-8: 2rem;        /* 32px */
    --space-9: 2.25rem;     /* 36px */
    --space-10: 2.5rem;     /* 40px */
    --space-11: 2.75rem;    /* 44px */
    --space-12: 3rem;       /* 48px */
    --space-14: 3.5rem;     /* 56px */
    --space-16: 4rem;       /* 64px */
    --space-20: 5rem;       /* 80px */
    --space-24: 6rem;       /* 96px */
    --space-28: 7rem;       /* 112px */
    --space-32: 8rem;       /* 128px */
    --space-36: 9rem;       /* 144px */
    --space-40: 10rem;      /* 160px */
    --space-44: 11rem;      /* 176px */
    --space-48: 12rem;      /* 192px */
    --space-52: 13rem;      /* 208px */
    --space-56: 14rem;      /* 224px */
    --space-60: 15rem;      /* 240px */
    --space-64: 16rem;      /* 256px */
    --space-72: 18rem;      /* 288px */
    --space-80: 20rem;      /* 320px */
    --space-96: 24rem;      /* 384px */
    
    /* Professional Border Radius */
    --radius-none: 0;
    --radius-xs: 0.125rem;   /* 2px */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.375rem;   /* 6px */
    --radius-lg: 0.5rem;     /* 8px */
    --radius-xl: 0.75rem;    /* 12px */
    --radius-2xl: 1rem;      /* 16px */
    --radius-3xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;
    
    /* Professional Shadow System */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-none: none;
    
    /* Professional Glass Morphism */
    --glass-light: rgba(255, 255, 255, 0.1);
    --glass-medium: rgba(255, 255, 255, 0.15);
    --glass-heavy: rgba(255, 255, 255, 0.25);
    --glass-dark: rgba(15, 23, 42, 0.8);
    --glass-blue: rgba(59, 130, 246, 0.1);
    
    /* Professional Backdrop Blur */
    --blur-sm: blur(4px);
    --blur-md: blur(8px);
    --blur-lg: blur(16px);
    --blur-xl: blur(24px);
    --blur-2xl: blur(40px);
    --blur-3xl: blur(64px);
    
    /* Professional Transitions */
    --transition-none: none;
    --transition-all: all 0.15s ease-in-out;
    --transition-fast: 0.1s ease-in-out;
    --transition-normal: 0.2s ease-in-out;
    --transition-slow: 0.3s ease-in-out;
    --transition-slower: 0.5s ease-in-out;
    
    /* Professional Animation Curves */
    --ease-linear: linear;
    --ease-in: cubic-bezier(0.4, 0, 1, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Professional Z-Index Scale */
    --z-behind: -1;
    --z-auto: auto;
    --z-0: 0;
    --z-10: 10;
    --z-20: 20;
    --z-30: 30;
    --z-40: 40;
    --z-50: 50;
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
    
    /* Professional Responsive Breakpoints */
    --breakpoint-xs: 475px;
    --breakpoint-sm: 640px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1280px;
    --breakpoint-2xl: 1536px;
    
    /* Professional Container Sizes */
    --container-xs: 475px;
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1400px;
    
    /* Professional Line Heights */
    --leading-none: 1;
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;
    --leading-loose: 2;
    
    /* Professional Letter Spacing */
    --tracking-tighter: -0.05em;
    --tracking-tight: -0.025em;
    --tracking-normal: 0em;
    --tracking-wide: 0.025em;
    --tracking-wider: 0.05em;
    --tracking-widest: 0.1em;
}

/* ===== PROFESSIONAL RESET & BASE STYLES ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    scroll-padding-top: 120px;
    overflow-x: hidden;
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-relaxed);
    color: var(--gray-800);
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Professional Typography Improvements */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-6);
    color: var(--gray-900);
    letter-spacing: var(--tracking-tight);
    text-wrap: balance;
}

h1 {
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
    font-weight: var(--font-extrabold);
    line-height: var(--leading-none);
    letter-spacing: var(--tracking-tighter);
}

h2 {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: var(--font-bold);
}

h3 {
    font-size: clamp(var(--text-xl), 3vw, var(--text-3xl));
    font-weight: var(--font-semibold);
}

h4 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
}

h5 {
    font-size: var(--text-lg);
    font-weight: var(--font-medium);
}

h6 {
    font-size: var(--text-base);
    font-weight: var(--font-medium);
}

p {
    margin-bottom: var(--space-4);
    line-height: var(--leading-relaxed);
    color: var(--gray-700);
    text-wrap: pretty;
}

a {
    color: var(--brand-secondary);
    text-decoration: none;
    transition: var(--transition-normal);
    cursor: pointer;
}

a:hover {
    color: var(--secondary-dark);
}

a:focus {
    outline: 2px solid var(--brand-secondary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Professional Lists */
ul, ol {
    margin: 0;
    padding: 0;
}

li {
    list-style: none;
}

/* Professional Images */
img, video {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Professional Form Elements */
button, input, optgroup, select, textarea {
    font-family: inherit;
    font-size: 100%;
    line-height: 1.15;
    margin: 0;
}

button, [type="button"], [type="reset"], [type="submit"] {
    -webkit-appearance: button;
    appearance: button;
    cursor: pointer;
}

button:disabled, [disabled] {
    cursor: not-allowed;
    opacity: 0.5;
}

/* Professional Focus States */
:focus-visible {
    outline: 2px solid var(--brand-secondary);
    outline-offset: 2px;
}

/* Remove default focus styles */
:focus:not(:focus-visible) {
    outline: none;
}

/* ===== PROFESSIONAL LAYOUT & CONTAINERS ===== */
.container {
    width: 100%;
    max-width: var(--container-2xl);
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
}

/* Responsive Container Variants */
.container-xs { max-width: var(--container-xs); }
.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }
.container-xl { max-width: var(--container-xl); }
.container-2xl { max-width: var(--container-2xl); }

.section {
    padding: var(--space-32) 0;
    position: relative;
    overflow: hidden;
}

.section-compact {
    padding: var(--space-20) 0;
}

.section-large {
    padding: var(--space-40) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-20);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-6);
    color: var(--gray-900);
    letter-spacing: var(--tracking-tight);
    position: relative;
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--gray-600);
    line-height: var(--leading-relaxed);
    font-weight: var(--font-normal);
    letter-spacing: var(--tracking-normal);
}

/* Professional Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

/* Professional Auto-fit Grid */
.grid-auto-fit {
    display: grid;
    gap: var(--space-6);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-auto-fill {
    display: grid;
    gap: var(--space-6);
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* ===== PROFESSIONAL GRADIENT TEXT ===== */
.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
    font-weight: var(--font-extrabold);
}

.gradient-primary {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.gradient-secondary {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

/* ===== PROFESSIONAL BUTTON SYSTEM ===== */
.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-secondary);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-height: 48px;
    white-space: nowrap;
    user-select: none;
    -webkit-user-select: none;
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    font-size: var(--text-sm);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left var(--transition-slower);
    z-index: 1;
}

.btn:hover::before {
    left: 100%;
}

.btn > * {
    position: relative;
    z-index: 2;
}

/* Button Variants */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
    border: 2px solid transparent;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    color: var(--white);
    scale: 1.02;
}

.btn-primary:active {
    transform: translateY(-1px);
    scale: 0.98;
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    color: var(--white);
    scale: 1.02;
}

.btn-outline {
    background: transparent;
    color: var(--brand-primary);
    border: 2px solid var(--brand-primary);
    backdrop-filter: var(--blur-sm);
}

.btn-outline:hover {
    background: var(--brand-primary);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    scale: 1.02;
}

.btn-glass {
    background: var(--glass-medium);
    color: var(--gray-800);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: var(--blur-lg);
    box-shadow: var(--shadow-lg);
}

.btn-glass:hover {
    background: var(--glass-heavy);
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
    scale: 1.02;
}

/* Button Sizes */
.btn-xs {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    min-height: 32px;
    border-radius: var(--radius-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    min-height: 40px;
    border-radius: var(--radius-lg);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    min-height: 56px;
    border-radius: var(--radius-2xl);
}

.btn-xl {
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-xl);
    min-height: 64px;
    border-radius: var(--radius-2xl);
}

/* Button States */
.btn:disabled,
.btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    scale: 1 !important;
}

.btn:disabled:hover,
.btn[disabled]:hover {
    transform: none;
    box-shadow: var(--shadow-md);
}

/* ===== PROFESSIONAL CARD SYSTEM ===== */
.card {
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(59, 130, 246, 0.2);
}

.card:hover::before {
    opacity: 1;
}

/* Card Variants */
.card-glass {
    background: var(--glass-medium);
    backdrop-filter: var(--blur-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-xl);
}

.card-gradient {
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.card-feature {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-50);
    position: relative;
    overflow: hidden;
}

.card-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
    transform-origin: left;
}

.card-feature:hover::before {
    transform: scaleX(1);
}

.card-feature:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(59, 130, 246, 0.1);
}

/* Card Content */
.card-header {
    padding: var(--space-6) var(--space-6) 0;
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: 0 var(--space-6) var(--space-6);
    margin-top: auto;
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-3);
    color: var(--gray-900);
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--gray-600);
    margin-bottom: var(--space-4);
    font-weight: var(--font-medium);
}

.card-text {
    color: var(--gray-700);
    line-height: var(--leading-relaxed);
}

/* Professional Testimonial Cards */
.testimonial-card {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    border: 1px solid var(--gray-50);
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: var(--space-6);
    left: var(--space-6);
    font-size: var(--text-6xl);
    color: var(--brand-secondary);
    opacity: 0.1;
    font-family: serif;
    line-height: 1;
}

.testimonial-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-2xl);
    border-color: rgba(59, 130, 246, 0.2);
}

/* Professional Service Cards */
.service-card {
    background: var(--white);
    border: 2px solid var(--gray-100);
    border-radius: var(--radius-3xl);
    padding: var(--space-8);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.service-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: -1;
}

.service-card.featured {
    border-color: var(--brand-secondary);
    transform: scale(1.05);
    box-shadow: var(--shadow-2xl);
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-50) 100%);
}

.service-card.featured::after {
    opacity: 0.03;
}

.service-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-2xl);
    border-color: var(--brand-secondary);
}

.service-card.featured:hover {
    transform: scale(1.08) translateY(-8px);
    box-shadow: 0 30px 80px rgba(59, 130, 246, 0.4);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        transform: translate3d(0, 0, 0);
    }
    40%, 43% {
        transform: translate3d(0, -30px, 0);
    }
    70% {
        transform: translate3d(0, -15px, 0);
    }
    90% {
        transform: translate3d(0, -4px, 0);
    }
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ===== GLOBAL UTILITY CLASSES ===== */

/* === LAYOUT UTILITIES === */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.block { display: block; }
.inline-block { display: inline-block; }
.hidden { display: none; }

/* === FLEX UTILITIES === */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

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

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

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }

/* === SPACING UTILITIES === */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }

/* === PADDING UTILITIES === */
.p-0 { padding: 0; }
.p-1 { padding: var(--space-1); }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

.px-1 { padding-left: var(--space-1); padding-right: var(--space-1); }
.px-2 { padding-left: var(--space-2); padding-right: var(--space-2); }
.px-3 { padding-left: var(--space-3); padding-right: var(--space-3); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-5 { padding-left: var(--space-5); padding-right: var(--space-5); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }

.py-1 { padding-top: var(--space-1); padding-bottom: var(--space-1); }
.py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.py-3 { padding-top: var(--space-3); padding-bottom: var(--space-3); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.py-5 { padding-top: var(--space-5); padding-bottom: var(--space-5); }
.py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }

/* === MARGIN UTILITIES === */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-1); }
.m-2 { margin: var(--space-2); }
.m-3 { margin: var(--space-3); }
.m-4 { margin: var(--space-4); }
.m-auto { margin: auto; }

.mx-auto { margin-left: auto; margin-right: auto; }
.my-auto { margin-top: auto; margin-bottom: auto; }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* === WIDTH & HEIGHT UTILITIES === */
.w-full { width: 100%; }
.w-auto { width: auto; }
.w-fit { width: fit-content; }
.w-screen { width: 100vw; }

.h-full { height: 100%; }
.h-auto { height: auto; }
.h-fit { height: fit-content; }
.h-screen { height: 100vh; }

.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-full { max-width: 100%; }

/* === BORDER RADIUS UTILITIES === */
.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.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); }

/* === BACKGROUND UTILITIES === */
.bg-transparent { background-color: transparent; }
.bg-white { background-color: var(--white); }
.bg-primary { background-color: var(--primary-color); }
.bg-primary-light { background-color: var(--primary-light); }
.bg-secondary { background-color: var(--secondary-color); }

.bg-gradient-primary { background: var(--gradient-primary); }
.bg-gradient-secondary { background: var(--gradient-secondary); }
.bg-gradient-hero { background: var(--gradient-hero); }

/* === TEXT UTILITIES === */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }

.font-light { font-weight: var(--font-light); }
.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }
.font-extrabold { font-weight: var(--font-extrabold); }

.text-white { color: var(--white); }
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-800 { color: var(--gray-800); }
.text-gray-900 { color: var(--gray-900); }

/* === SHADOW UTILITIES === */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-2xl { box-shadow: var(--shadow-2xl); }

/* === POSITION UTILITIES === */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.top-0 { top: 0; }
.right-0 { right: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }

.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

/* === TRANSFORM UTILITIES === */
.scale-95 { transform: scale(0.95); }
.scale-100 { transform: scale(1); }
.scale-105 { transform: scale(1.05); }
.scale-110 { transform: scale(1.1); }

.translate-x-0 { transform: translateX(0); }
.translate-y-0 { transform: translateY(0); }
.-translate-y-1 { transform: translateY(-0.25rem); }
.-translate-y-2 { transform: translateY(-0.5rem); }

/* === TRANSITION UTILITIES === */
.transition { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke, opacity, box-shadow, transform, filter, backdrop-filter; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-all { transition: all var(--transition-normal); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }

.duration-150 { transition-duration: 150ms; }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }

.ease-in { transition-timing-function: ease-in; }
.ease-out { transition-timing-function: ease-out; }
.ease-in-out { transition-timing-function: ease-in-out; }

/* === OVERFLOW UTILITIES === */
.overflow-hidden { overflow: hidden; }
.overflow-visible { overflow: visible; }
.overflow-auto { overflow: auto; }

/* === OPACITY UTILITIES === */
.opacity-0 { opacity: 0; }
.opacity-25 { opacity: 0.25; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

/* === CURSOR UTILITIES === */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }

/* === INTERACTION UTILITIES === */
.pointer-events-none { pointer-events: none; }
.pointer-events-auto { pointer-events: auto; }

.select-none { user-select: none; }
.select-text { user-select: text; }
.select-all { user-select: all; }

/* === GLASS MORPHISM UTILITIES === */
.glass-light {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.glass-medium {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.glass-heavy {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* === HOVER UTILITIES === */
.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:scale-110:hover { transform: scale(1.1); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }
.hover\:-translate-y-2:hover { transform: translateY(-0.5rem); }
.hover\:shadow-lg:hover { box-shadow: var(--shadow-lg); }
.hover\:shadow-xl:hover { box-shadow: var(--shadow-xl); }

/* === FOCUS UTILITIES === */
.focus\:outline-none:focus { outline: 2px solid transparent; outline-offset: 2px; }
.focus\:ring-2:focus { box-shadow: 0 0 0 2px var(--primary-color); }
.focus\:ring-primary:focus { box-shadow: 0 0 0 2px var(--primary-color); }

/* ===== COMPONENT UTILITIES ===== */

/* === BUTTON VARIANTS === */
.btn-base {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-secondary);
    font-size: var(--text-base);
    font-weight: var(--font-medium);
    line-height: 1;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    min-height: 44px;
}

.btn-base::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

.btn-base:hover::before {
    left: 100%;
}

.btn-primary-variant {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary-variant:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    color: var(--white);
}

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

.btn-outline-variant:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-size-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
    min-height: 56px;
}

.btn-size-small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    min-height: 36px;
}

/* === CARD VARIANTS === */
.card-base {
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card-base:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2xl);
}

.card-glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.card-feature {
    background: var(--white);
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.card-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.card-feature:hover::before {
    transform: scaleX(1);
}

.card-feature:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

/* === INPUT VARIANTS === */
.input-base {
    padding: var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    font-size: var(--text-base);
    transition: all var(--transition-fast);
    background: var(--white);
    width: 100%;
}

.input-base:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
    outline: none;
}

.input-error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* === NAVIGATION VARIANTS === */
.nav-link-base {
    color: var(--gray-700);
    font-weight: var(--font-medium);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    position: relative;
    text-decoration: none;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-link-base:hover,
.nav-link-base.active {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    box-shadow: 0 4px 20px rgba(30, 64, 175, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* === HERO VARIANTS === */
.hero-background-gradient {
    background: linear-gradient(135deg, 
        rgba(30, 64, 175, 0.03) 0%, 
        rgba(99, 102, 241, 0.05) 25%,
        rgba(255, 255, 255, 1) 50%,
        rgba(245, 247, 250, 1) 100%);
}

.hero-title-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--sa-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

/* === ICON VARIANTS === */
.icon-container {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    color: var(--white);
    transition: all var(--transition-normal);
}

.icon-container:hover {
    transform: scale(1.1);
    animation: pulse 2s infinite;
}

.icon-small {
    width: 50px;
    height: 50px;
    font-size: var(--text-xl);
}

.icon-large {
    width: 100px;
    height: 100px;
    font-size: var(--text-4xl);
}

/* === ANIMATION VARIANTS === */
.animate-fade-in {
    animation: fadeIn 0.8s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 1s ease-out;
}

.animate-slide-in-right {
    animation: slideInRight 1s ease-out;
}

.animate-bounce {
    animation: bounce 2s infinite;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-float {
    animation: float 8s ease-in-out infinite;
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 640px) {
    .sm\:hidden { display: none !important; }
    .sm\:flex { display: flex !important; }
    .sm\:block { display: block !important; }
    .sm\:text-sm { font-size: var(--text-sm) !important; }
    .sm\:text-base { font-size: var(--text-base) !important; }
    .sm\:p-2 { padding: var(--space-2) !important; }
    .sm\:p-4 { padding: var(--space-4) !important; }
    .sm\:gap-2 { gap: var(--space-2) !important; }
    .sm\:gap-4 { gap: var(--space-4) !important; }
}

@media (max-width: 768px) {
    .md\:hidden { display: none !important; }
    .md\:flex { display: flex !important; }
    .md\:block { display: block !important; }
    .md\:grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)) !important; }
    .md\:text-center { text-align: center !important; }
    .md\:flex-col { flex-direction: column !important; }
}

@media (min-width: 769px) {
    .lg\:flex { display: flex !important; }
    .lg\:hidden { display: none !important; }
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
}

/* ===== UTILITIES ===== */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.hidden {
    display: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

.overflow-hidden {
    overflow: hidden;
}

.z-10 {
    z-index: 10;
}

.z-20 {
    z-index: 20;
}

.z-30 {
    z-index: 30;
}

/* ===== RESPONSIVE IMAGES ===== */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===== FOCUS STYLES ===== */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-400);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-500);
}

/* ===== SELECTION STYLING ===== */
::selection {
    background: var(--primary-color);
    color: var(--white);
}

::-moz-selection {
    background: var(--primary-color);
    color: var(--white);
}

/* ===== RESPONSIVE TYPOGRAPHY ===== */
@media (max-width: 768px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
        --text-3xl: 1.5rem;
        --text-2xl: 1.25rem;
    }
    
    .section {
        padding: var(--space-16) 0;
    }
    
    .container {
        padding: 0 var(--space-3);
    }
}