/* ========================================
   CONFIG.CSS -- Professional Global Variables
   ======================================== */

:root {
    /* === PROFESSIONAL PALETTE === */

    /* Neutrals - Professional Gray System */
    --color-white: #ffffff;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;

    /* Professional Blues - Inspired by GitHub/Linear */
    --color-blue-50: #f0f9ff;
    --color-blue-100: #e0f2fe;
    --color-blue-500: #0ea5e9;
    --color-blue-600: #0969da;
    --color-blue-700: #0550ae;
    --color-blue-800: #1e40af;
    --color-blue-900: #1e3a8a;

    /* Slate Professional */
    --color-slate-50: #f8fafc;
    --color-slate-100: #f1f5f9;
    --color-slate-600: #475569;
    --color-slate-700: #334155;
    --color-slate-800: #1e293b;
    --color-slate-900: #0f172a;

    /* Primary System */
    --color-primary: #0969da;
    --color-primary-hover: #0550ae;
    --color-primary-light: #0ea5e9;
    --color-primary-dark: #1e40af;

    /* Professional Gradients - Subtle */
    --gradient-primary: linear-gradient(135deg, #0969da 0%, #0550ae 100%);
    --gradient-header: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    --gradient-subtle: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);

    /* Modern and Attractive Blue Gradient for Aside */
    --gradient-blue-modern: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-blue-ocean: linear-gradient(135deg, #2196F3 0%, #1976D2 50%, #0D47A1 100%);
    --gradient-blue-vibrant: linear-gradient(135deg, #3b82f6 0%, #2563eb 50%, #1d4ed8 100%);

    /* Professional States */
    --color-success: #16a34a;
    /* Green-600 */
    --color-success-light: #dcfce7;
    --color-danger: #dc2626;
    /* Red-600 */
    --color-danger-light: #fef2f2;
    --color-warning: #d97706;
    /* Amber-600 */
    --color-warning-light: #fefbeb;
    --color-info: #0969da;
    /* Blue-600 */
    --color-info-light: #eff6ff;

    /* === PROFESSIONAL TYPOGRAPHY SYSTEM === */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-secondary: 'Inter', system-ui, -apple-system, sans-serif;

    /* Professional Typography 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 */

    /* Professional Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;

    /* Professional Line Heights */
    --leading-tight: 1.25;
    --leading-snug: 1.375;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* === SYSTEMATIC 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 */

    /* === PROFESSIONAL BORDERS AND SHADOWS === */
    --border-radius-sm: 0.25rem;
    /* 4px */
    --border-radius: 0.375rem;
    /* 6px */
    --border-radius-lg: 0.5rem;
    /* 8px */
    --border-radius-xl: 0.75rem;
    /* 12px */
    --border-radius-2xl: 1rem;
    /* 16px */

    /* Ultra-refined Professional Shadows */
    --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.03);
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.06), 0 1px 2px -1px rgb(0 0 0 / 0.06);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.07);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.08);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 0 1px rgb(59 130 246 / 0.05), 0 1px 3px 0 rgb(59 130 246 / 0.1);
    --shadow-focus: 0 0 0 3px rgb(59 130 246 / 0.12);

    /* === ENHANCED PROFESSIONAL TRANSITIONS === */
    --transition-fast: 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-normal: 300ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-slow: 500ms cubic-bezier(0.16, 1, 0.3, 1);
    --transition-bouncy: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-smooth: 600ms cubic-bezier(0.16, 1, 0.3, 1);

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

/* === REUSABLE PROFESSIONAL CLASSES === */

/* Subtle Gradients */
.bg-gradient-header {
    background: var(--gradient-header);
}

.bg-gradient-blue-modern {
    background: var(--gradient-blue-modern);
}

.bg-gradient-blue-ocean {
    background: var(--gradient-blue-ocean);
}

.bg-gradient-blue-vibrant {
    background: var(--gradient-blue-vibrant);
}

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

.bg-gradient-subtle {
    background: var(--gradient-subtle);
}

/* Professional Cards */
.card-professional {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-normal);
}

.card-professional:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-gray-300);
}

/* Professional Buttons */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--border-radius-lg);
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-secondary:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
    transform: translateY(-1px);
}

/* Professional States and Badges */
.badge-professional {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
}

/* Ultra-subtle Hover Effects */
.hover-lift {
    transition: all var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-1px);
}

.hover-scale {
    transition: all var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.02);
}

.hover-glow {
    transition: all var(--transition-normal);
}

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

/* Professional Animations - Enhanced */
.animate-fade-in {
    animation: fadeInImproved 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

.animate-slide-up {
    animation: slideUpImproved 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) both;
}

/* More subtle and professional fade-in animation */
@keyframes fadeInImproved {
    0% {
        opacity: 0;
        transform: translateY(8px) scale(0.98);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes slideUpImproved {
    0% {
        opacity: 0;
        transform: translateY(12px) scale(0.97);
    }

    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Ultra-subtle animation for delicate elements */
.animate-fade-in-subtle {
    animation: fadeInSubtle 0.6s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes fadeInSubtle {
    0% {
        opacity: 0;
        transform: translateY(4px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* More natural staggered delays */
.animate-delay-100 {
    animation-delay: 0.1s;
}

.animate-delay-200 {
    animation-delay: 0.2s;
}

.animate-delay-300 {
    animation-delay: 0.3s;
}

.animate-delay-400 {
    animation-delay: 0.4s;
}

.animate-delay-500 {
    animation-delay: 0.5s;
}

/* Subtle Glass Effect */
.glass-subtle {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Dark Professional Cards for Sidebar */
.card-professional-dark {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--border-radius-lg);
    padding: var(--space-4);
    border: 1px solid rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(8px);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.card-professional-dark:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Subtle Hover Effects */
.hover-lift-subtle {
    transition: all var(--transition-normal);
}

.hover-lift-subtle:hover {
    transform: translateY(-1px);
}

/* Professional Logo Animations */
.logo-hover {
    transition: all var(--transition-normal);
    cursor: pointer;
}

.logo-hover:hover {
    transform: translateY(-1px);
}

.logo-hover:hover svg {
    transform: rotate(2deg);
    color: var(--color-primary);
}

/* Professional Footer */
.footer-professional {
    background: var(--gradient-subtle);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--border-radius-2xl);
}

/* Professional Social Icons */
.social-icon {
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-medium);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.social-icon:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Professional Grid System */
.container-professional {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* Typography Improvements */
.heading-primary {
    font-size: var(--text-4xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-tight);
    color: var(--color-gray-900);
}

.heading-secondary {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    line-height: var(--leading-snug);
    color: var(--color-gray-800);
}

.text-body {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--color-gray-600);
}

/* Responsive utilities */
@media (max-width: 768px) {
    .heading-primary {
        font-size: var(--text-3xl);
    }

    .heading-secondary {
        font-size: var(--text-xl);
    }
}

/* Professional Loading States */
.loading-state {
    opacity: 0.6;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

/* Enhanced Interactive States */
.focus-professional:focus {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-color: var(--color-primary);
    transform: translateY(-0.5px);
}

/* Enhanced Button States */
.btn-primary:active {
    transform: translateY(0px) scale(0.98);
    transition: all 100ms ease;
}

.btn-secondary:active {
    transform: translateY(0px) scale(0.98);
    transition: all 100ms ease;
}

/* Micro-interactions for Links */
.link-hover {
    position: relative;
    transition: all var(--transition-normal);
}

.link-hover:hover {
    color: var(--color-primary);
}

.link-hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

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

/* Subtle Loading States */
.loading-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* Shimmer effect para loading */
.shimmer {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* Color Utility Classes */
.text-primary {
    color: var(--color-primary);
}

.text-primary:hover {
    color: var(--color-primary-hover);
}

.bg-primary {
    background-color: var(--color-primary);
}

/* Hero image improvements */
.hero-image {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-2xl);
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-slow);
}

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

.hero-image img {
    transition: transform var(--transition-slow);
}

.hero-image:hover img {
    transform: scale(1.02);
}

/* Testimonial improvements */
.testimonial-section {
    background: var(--gradient-subtle);
    border-radius: var(--border-radius-2xl);
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--border-radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-normal);
}

.testimonial-card:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.95);
}