/* Custom styles beyond Tailwind */
/* Font loading optimization with display swap - prevents FOIT */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap&text=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789.,/()%25-&display=swap');

/* Base styles */
body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    scroll-behavior: smooth;
    padding-top: 4rem; /* Add padding to account for fixed navbar */
}

/* Smooth scrolling for all anchors */
html {
    scroll-behavior: smooth;
    /* Font size adjustment for better responsive typography */
    font-size: 100%;
}

@media (max-width: 640px) {
    html {
        font-size: 90%;
    }
}

/* Loading animations for content */
.fade-in {
    animation: fadeIn 0.8s ease forwards;
    opacity: 0;
}

.slide-up {
    animation: slideUp 0.8s ease forwards;
    opacity: 0;
    transform: translateY(20px);
}

/* Enable hardware acceleration for smoother animations */
.project-card, .hover-underline, .nav-link {
    transform: translateZ(0);
    backface-visibility: hidden;
    -webkit-font-smoothing: subpixel-antialiased;
}

/* Better section spacing for visual hierarchy */
section {
    margin-bottom: 5rem;
    padding-top: 4rem;
    padding-bottom: 4rem;
    position: relative;
}

/* Add subtle section divider for better visual hierarchy */
section:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 150px;
    height: 1px;
    background: linear-gradient(to right, transparent, rgba(79, 70, 229, 0.3), transparent);
    transform: translateX(-50%);
}

/* Enhanced animated underline for links */
.hover-underline {
    position: relative;
    display: inline-block;
}

.hover-underline::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #4f46e5; /* Indigo-600 */
    transition: width 0.3s ease;
    border-radius: 1px;
}

.hover-underline:hover::after,
.hover-underline:focus::after {
    width: 100%;
}

/* Animations for elements when they come into view */
@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes slideUp {
    0% { 
        opacity: 0;
        transform: translateY(30px);
    }
    100% { 
        opacity: 1;
        transform: translateY(0);
    }
}

.staggered-animation > *:nth-child(1) { animation-delay: 0.1s; }
.staggered-animation > *:nth-child(2) { animation-delay: 0.2s; }
.staggered-animation > *:nth-child(3) { animation-delay: 0.3s; }
.staggered-animation > *:nth-child(4) { animation-delay: 0.4s; }
.staggered-animation > *:nth-child(5) { animation-delay: 0.5s; }

/* Improved custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9; /* Slate-100 */
}

::-webkit-scrollbar-thumb {
    background: #94a3b8; /* Slate-400 */
    border-radius: 10px;
    border: 2px solid #f1f5f9;
}

::-webkit-scrollbar-thumb:hover {
    background: #64748b; /* Slate-500 */
}

/* Subtle background pattern */
.bg-pattern {
    background-color: #f8fafc;
    background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%234f46e5' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* Focus styles for better accessibility */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid #4f46e5;
    outline-offset: 2px;
}

/* High contrast mode improvements */
@media (prefers-contrast: more) {
    body {
        color: #000;
        background: #fff;
    }
    
    .bg-pattern {
        background-image: none;
        background-color: #fff;
    }
}

/* Print styles for better resume printing */
@media print {
    body {
        padding-top: 0;
        color: #000;
        background: #fff;
    }
    
    nav, footer, #backToTop, .bg-pattern {
        display: none !important;
    }
    
    section {
        page-break-inside: avoid;
        margin-bottom: 2rem;
        padding: 0;
    }
    
    a {
        text-decoration: none;
        color: #000;
    }
    
    .project-card {
        break-inside: avoid;
    }
}

/* Enhanced mobile responsiveness */
@media (max-width: 768px) {
    section {
        padding-left: 1rem;
        padding-right: 1rem;
        padding-top: 3rem;
        padding-bottom: 3rem;
        margin-bottom: 3rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
}