/* ============================================
   MODERN DESIGN SYSTEM - ITSMO DEVELOPMENT
   ============================================ */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ============================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================ */
:root {
    /* Colors - Primary Palette */
    --color-primary-50: hsl(320, 20%, 95%);
    --color-primary-100: hsl(320, 20%, 85%);
    --color-primary-200: hsl(320, 20%, 75%);
    --color-primary-300: hsl(320, 20%, 65%);
    --color-primary-400: hsl(320, 20%, 55%);
    --color-primary-500: hsl(320, 25%, 45%);
    --color-primary-600: hsl(320, 30%, 35%);
    --color-primary-700: hsl(320, 30%, 28%);
    --color-primary-800: hsl(320, 30%, 20%);
    --color-primary-900: hsl(320, 30%, 12%);

    /* Colors - Accent */
    --color-accent-purple: hsl(270, 70%, 60%);
    --color-accent-pink: hsl(330, 70%, 60%);
    --color-accent-blue: hsl(220, 80%, 60%);
    --color-accent-teal: hsl(180, 60%, 50%);
    --color-accent-gold: hsl(45, 90%, 60%);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, hsl(270, 70%, 60%) 0%, hsl(330, 70%, 60%) 100%);
    --gradient-dark: linear-gradient(135deg, hsl(240, 30%, 10%) 0%, hsl(280, 30%, 15%) 100%);
    --gradient-light: linear-gradient(135deg, hsl(0, 0%, 98%) 0%, hsl(220, 20%, 96%) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    
    /* Background Gradients */
    --bg-gradient-dark: radial-gradient(1200px 800px at 10% -10%, rgba(124, 58, 237, 0.22) 0%, transparent 60%),
                        radial-gradient(1200px 800px at 110% 10%, rgba(236, 72, 153, 0.18) 0%, transparent 60%),
                        hsl(220, 30%, 8%);
    
    /* Neutral Colors */
    --color-white: hsl(0, 0%, 100%);
    --color-black: hsl(0, 0%, 0%);
    --color-gray-50: hsl(220, 20%, 98%);
    --color-gray-100: hsl(220, 15%, 95%);
    --color-gray-200: hsl(220, 13%, 91%);
    --color-gray-300: hsl(220, 10%, 80%);
    --color-gray-400: hsl(220, 8%, 60%);
    --color-gray-500: hsl(220, 6%, 45%);
    --color-gray-600: hsl(220, 8%, 30%);
    --color-gray-700: hsl(220, 10%, 20%);
    --color-gray-800: hsl(220, 15%, 12%);
    --color-gray-900: hsl(220, 20%, 8%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    
    /* Font Sizes */
    --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 */

    /* Font Weights */
    --font-light: 300;
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Spacing */
    --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-8: 2rem;         /* 32px */
    --space-10: 2.5rem;      /* 40px */
    --space-12: 3rem;        /* 48px */
    --space-16: 4rem;        /* 64px */
    --space-20: 5rem;        /* 80px */
    --space-24: 6rem;        /* 96px */

    /* Border Radius */
    --radius-sm: 0.375rem;   /* 6px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    --radius-2xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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-glow: 0 0 20px rgba(124, 58, 237, 0.3);
    --shadow-glow-pink: 0 0 20px rgba(236, 72, 153, 0.3);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ============================================
   KEYFRAME ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

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

/* Animations */
.animate-fadeIn {
    animation: fadeIn var(--transition-base) ease-out;
}

.animate-slideUp {
    animation: slideUp var(--transition-slow) ease-out;
}

.animate-slideDown {
    animation: slideDown var(--transition-slow) ease-out;
}

.animate-scaleIn {
    animation: scaleIn var(--transition-base) ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Glassmorphism */
.glass {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.glass-light {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

/* Gradients */
.gradient-primary {
    background: var(--gradient-primary);
}

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

.gradient-animated {
    background: linear-gradient(270deg, hsl(270, 70%, 60%), hsl(330, 70%, 60%), hsl(220, 80%, 60%));
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
}

/* Hover Effects */
.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.hover-glow:hover {
    box-shadow: var(--shadow-glow);
}

.hover-scale {
    transition: transform var(--transition-base);
}

.hover-scale:hover {
    transform: scale(1.05);
}

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

/* Modern Button */
.btn-modern {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    line-height: 1.5;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width var(--transition-slow), height var(--transition-slow);
}

.btn-modern:hover::before {
    width: 300px;
    height: 300px;
}

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

.btn-primary:hover {
    box-shadow: var(--shadow-xl), var(--shadow-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-primary-600);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primary-600);
    border: 2px solid var(--color-primary-400);
}

.btn-ghost:hover {
    background: var(--color-primary-50);
    border-color: var(--color-primary-600);
}

/* Modern Card */
.card-modern {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--color-gray-200);
}

.card-modern:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
    border-color: var(--color-primary-300);
}

.card-glass {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-base);
}

.card-glass:hover {
    background: rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-2xl);
    transform: translateY(-4px);
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

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

.badge-outline {
    background: transparent;
    border: 2px solid var(--color-primary-400);
    color: var(--color-primary-600);
}

.badge-glow {
    box-shadow: var(--shadow-glow);
}

/* Container */
.container-modern {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

@media (min-width: 768px) {
    .container-modern {
        padding: 0 var(--space-8);
    }
}

/* Section */
.section-modern {
    padding: var(--space-16) 0;
}

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

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

.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

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

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    :root {
        --text-3xl: 1.5rem;
        --text-4xl: 1.875rem;
        --text-5xl: 2.25rem;
        --text-6xl: 3rem;
    }
    
    .section-modern {
        padding: var(--space-12) 0;
    }
    
    .section-hero {
        padding: var(--space-16) 0;
    }
}