/* Neuromorphic Color Palette */
/* ------------------------- */
:root {
    /* Primary Palette */
    --color-bg-primary: #f8fafc;      /* Light slate-50 - Soft neutral base */
    --color-surface: #ffffff;          /* Pure white - Clean card surfaces */
    --color-accent: #3b82f6;          /* Blue-500 - Engaging primary color */
    --color-secondary: #6366f1;       /* Indigo-500 - Complementary accent */
    
    /* Depth & Shadow System */
    --color-shadow-light: #e2e8f0;    /* Slate-200 - Subtle depth */
    --color-shadow-dark: #475569;     /* Slate-600 - Deeper shadows */
    --color-border-highlight: #f1f5f9; /* Slate-100 - Top edge lighting */
    
    /* Text & Contrast */
    --color-text-primary: #1e293b;    /* Slate-800 - High contrast, readable */
    --color-text-secondary: #64748b;  /* Slate-500 - Medium contrast */
    --color-text-muted: #94a3b8;     /* Slate-400 - Low contrast */
    
    /* Interactive States */
    --color-hover: #1d4ed8;           /* Blue-700 - Hover state */
    --color-active: #1e40af;          /* Blue-800 - Active state */
    --color-focus: #dbeafe;           /* Blue-100 - Focus ring */
}

/* Base Styles and Reset */
/* -------------------- */
body {
    font-family: var(--font-primary, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif);
    font-size: var(--text-base, 1rem); /* 16px minimum for WCAG AA compliance */
    line-height: var(--leading-normal, 1.5); /* 1.5 for optimal readability */
    font-weight: 400; /* Regular weight for body text */
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
    padding-top: 4.5rem;  /* Adjust based on nav height */
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(226, 232, 240, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(241, 245, 249, 0.1) 0%, transparent 50%);
    background-attachment: fixed;
}

/* Smooth Scrolling and Animations */
/* ----------------------------- */
html {
    scroll-behavior: smooth; /* Enables smooth scrolling for anchor links */
}

/* Section Header Animations */
.section__title {
    transition: color 0.3s ease-in-out;
}

.section__title:hover {
    color: var(--color-accent); /* Neuromorphic accent color on hover for section headers */
}

/* Project Filter Styles */
/* -------------------- */
.filter-btn {
    position: relative;
    overflow: hidden;
    user-select: none;
}

.filter-btn:hover {
    transform: translateY(-1px);
    box-shadow: 
        6px 6px 12px var(--color-shadow-light),
        -6px -6px 12px var(--color-surface);
}

.filter-btn.active {
    transform: translateY(-1px);
    box-shadow: 
        8px 8px 16px var(--color-shadow-light),
        -8px -8px 16px var(--color-surface);
}

.filter-btn::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 0.5s;
}

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

/* Neuromorphic Components */
/* ---------------------- */
.neuromorphic-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border-highlight);
    box-shadow: 
        8px 8px 16px var(--color-shadow-light),
        -8px -8px 16px var(--color-surface);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.neuromorphic-card:hover {
    box-shadow: 
        12px 12px 20px var(--color-shadow-light),
        -12px -12px 20px var(--color-surface);
    transform: translateY(-2px);
}

/* Neuromorphic variants */
.neuromorphic-card--subtle {
    box-shadow: 
        4px 4px 8px var(--color-shadow-light),
        -4px -4px 8px var(--color-surface);
}

.neuromorphic-card--elevated {
    box-shadow: 
        16px 16px 32px var(--color-shadow-light),
        -16px -16px 32px var(--color-surface);
}

/* Neuromorphic text colors */
.text-neuromorphic-primary {
    color: var(--color-text-primary);
}

.text-neuromorphic-secondary {
    color: var(--color-text-secondary);
}

.text-neuromorphic-muted {
    color: var(--color-text-muted);
}

.text-neuromorphic-accent {
    color: var(--color-accent);
}

.neuromorphic-button {
    background: linear-gradient(145deg, var(--color-bg-primary), var(--color-shadow-light));
    border: 1px solid var(--color-border-highlight);
    box-shadow: 
        4px 4px 8px var(--color-shadow-light),
        -4px -4px 8px var(--color-surface);
    transition: all 0.2s ease;
    border-radius: 12px;
    color: var(--color-text-primary);
    font-weight: 500;
}

.neuromorphic-button:hover {
    box-shadow: 
        2px 2px 4px var(--color-shadow-light),
        -2px -2px 4px var(--color-surface);
    transform: translateY(1px);
}

.neuromorphic-input {
    background: var(--color-surface);
    border: 1px solid var(--color-shadow-light);
    box-shadow: 
        inset 2px 2px 4px var(--color-shadow-light),
        inset -2px -2px 4px var(--color-surface);
    border-radius: 12px;
    transition: all 0.2s ease;
}

.neuromorphic-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 
        inset 2px 2px 4px var(--color-shadow-light),
        inset -2px -2px 4px var(--color-surface),
        0 0 0 3px var(--color-focus);
}

/* Project Cards Animation */
.project-card {
    transition: all 0.3s ease;
}

.project-card.filtered-out {
    opacity: 0;
    transform: scale(0.9) translateY(-10px);
}

/* Navigation Styles */
/* --------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(248, 250, 252, 0.95);  /* Neuromorphic background */
    backdrop-filter: blur(12px);  /* Stronger blur effect */
    -webkit-backdrop-filter: blur(12px);  /* For Safari support */
    border-bottom: 1px solid var(--color-border-highlight);  /* Neuromorphic border */
    box-shadow: 
        0 4px 12px rgba(226, 232, 240, 0.3),
        0 1px 3px rgba(226, 232, 240, 0.1);  /* Neuromorphic shadow */
    transition: all 0.3s ease;
    --scroll-progress: 0;
    --scroll-transform: scaleX(0);
}

/* Progress bar container */
.nav::after {
    content: '';
    position: absolute;
    bottom: -1px;  /* Position it at the bottom of the nav */
    left: 0;
    width: 100%;
    height: 2px;  /* Height of the progress bar */
    background: linear-gradient(to right, var(--color-accent), var(--color-secondary));  /* Neuromorphic gradient */
    transform-origin: 0 50%;  /* Scale from left to right */
    transform: var(--scroll-transform);
    transition: transform 0.1s ease-out;  /* Smooth transition for progress updates */
    will-change: transform;  /* Optimize for animations */
}

.nav__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 80rem;
    margin: 0 auto;
    padding: 1rem;
}

.nav__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link--contact {
    background-color: var(--color-accent);
    color: var(--color-surface);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 
        2px 2px 4px var(--color-shadow-light),
        -2px -2px 4px var(--color-surface);
}

.nav__link--contact:hover {
    background-color: var(--color-hover);
    color: var(--color-surface);
    box-shadow: 
        1px 1px 2px var(--color-shadow-light),
        -1px -1px 2px var(--color-surface);
    transform: translateY(1px);
}

/* Mobile Menu Animation and Layout */
/* ----------------------------- */
.nav-mobile {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-shadow-light);
    transition: transform 0.3s ease, opacity 0.3s ease;
    box-shadow: 
        0 -4px 12px rgba(226, 232, 240, 0.3);
}

.nav-mobile--hidden {
    display: none;
}

/* Responsive Design and Mobile Optimizations */
/* ---------------------------------------- */
@media (max-width: 768px) {
    /* Touch Target Optimization */
    /* Ensures all interactive elements meet minimum size requirements for touch */
    .btn,
    .nav__link {
        min-height: 44px;
        min-width: 44px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    /* Typography Scaling */
    /* Adjusts text sizes for better readability on mobile */
    .hero__title {
        font-size: 1.75rem;
        line-height: 2rem;
    }

    .section__title {
        font-size: 1.5rem;
        line-height: 1.75rem;
    }

    .section__subtitle {
        font-size: 1.25rem;
        line-height: 1.5rem;
    }

    /* Container Spacing */
    /* Adds consistent padding for mobile containers */
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    /* Section Spacing */
    /* Improves vertical rhythm between sections on mobile */
    .section {
        margin-top: 2rem;
        margin-bottom: 2rem;
    }

    /* Responsive Images */
    /* Ensures images scale properly on mobile */
    .img--responsive {
        max-width: 100%;
        height: auto;
    }

    /* Mobile Color Contrast */
    /* Enhances readability and accessibility on mobile */
    .btn--primary {
        background-color: #2563eb;
    }

    .text--secondary {
        color: #4b5563;
    }

    /* Touch Feedback */
    /* Provides visual feedback for touch interactions */
    .btn:active,
    .nav__link:active {
        opacity: 0.8;
    }
}

/* Layout Prevention */
/* --------------- */
/* Prevents horizontal scroll on mobile devices */
html, body {
    overflow-x: hidden;
    max-width: 100%;
}

/* Improve form elements on mobile */
input, textarea, select {
    font-size: 16px; /* Prevents iOS zoom on focus */
    padding: 0.75rem;
    border-radius: 0.5rem;
}

/* Add safe area insets for modern mobile browsers */
@supports (padding: max(0px)) {
    body {
        padding-left: min(0vmin, env(safe-area-inset-left));
        padding-right: min(0vmin, env(safe-area-inset-right));
        padding-bottom: min(0vmin, env(safe-area-inset-bottom));
    }
}

/* Lazy loading styles */
.lazy-load {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

.lazy-load:not([src]) {
    opacity: 0;
}

img:not(.lazy-load) {
    opacity: 1;
}

/* Improve image loading performance */
img {
    height: auto;
    max-width: 100%;
    image-rendering: optimizeQuality;
    image-rendering: -webkit-optimize-contrast;
}

/* Optimize for web fonts */
@font-face {
    font-display: swap;
}

/* Performance optimizations */
.performance-optimized {
    will-change: transform;
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .portfolio-arrow:hover {
        transform: translateY(-50%) scale(1);
    }
    
    .card:hover {
        transform: none;
    }
}

/* Preload critical resources */
.critical-resource {
    font-display: swap;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Optimize background images */
.bg-optimized {
    background-attachment: scroll;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

/* Button Styles */
/* ----------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn--primary {
    background-color: #3B82F6;
    color: white;
}

.btn--primary:hover {
    background-color: #2563eb;
}

.btn--secondary {
    background-color: #F3F4F6;
    color: #1F2937;
}

.btn--secondary:hover {
    background-color: #E5E7EB;
}

/* Card Styles */
/* --------- */
.card {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card__content {
    padding: 1.5rem;
}

.card__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1F2937;
    margin-bottom: 0.5rem;
}

.card__description {
    color: #6B7280;
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Modal Styles */
/* ---------- */
.modal {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

.modal--active {
    display: flex;
}

.modal__content {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal__header {
    margin-bottom: 1rem;
}

.modal__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #1F2937;
}

.modal__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.5rem;
    color: #6B7280;
    transition: color 0.3s ease;
}

.modal__close:hover {
    color: #1F2937;
}

/* Optional: Add shadow when scrolling */
.nav--scrolled {
    background-color: rgba(255, 255, 255, 0.95);  /* Slightly more opaque when scrolled */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Portfolio Carousel Styles */
/* ----------------------- */
:root {
    --portfolio-gap-desktop: 2rem;
    --portfolio-gap-mobile: 1rem;
    --portfolio-total-gap-desktop: calc(var(--portfolio-gap-desktop) * 2);
}

#portfolio-container {
    display: flex;
    gap: var(--portfolio-gap-desktop);
    transition: transform 0.5s ease-in-out;
    flex-wrap: nowrap;
    min-width: max-content;
    will-change: transform;
}

.portfolio-item {
    flex-shrink: 0;
    transition: all 0.3s ease;
    width: calc((100% - var(--portfolio-total-gap-desktop)) / 3);
    max-width: 400px;
    min-width: 300px;
}

/* Improved portfolio container for mobile */
@media (max-width: 1023px) {
    .portfolio-item {
        width: calc((100% - var(--portfolio-gap-desktop)) / 2);
        min-width: 280px;
    }
}

@media (max-width: 767px) {
    .portfolio-item {
        width: calc(100vw - 4rem);
        min-width: 280px;
        max-width: 400px;
    }
    
    #portfolio-container {
        gap: var(--portfolio-gap-mobile);
    }
}

/* Carousel container wrapper - this class is on the parent of #portfolio-container */
.relative.max-w-7xl.mx-auto {
    overflow: hidden;
    position: relative;
}

/* Carousel Navigation */
.portfolio-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 50; /* Increase z-index to ensure it's above everything */
    background-color: white; /* Make background fully opaque */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 9999px;
    padding: 1rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); /* More pronounced shadow */
    border: 2px solid rgba(229, 231, 235, 1);
    transition: all 0.3s ease;
    cursor: pointer; /* Ensure cursor shows pointer */
    pointer-events: auto; /* Ensure clicks are captured */
    min-width: 60px; /* Ensure minimum clickable area */
    min-height: 60px; /* Ensure minimum clickable area */
}

.portfolio-arrow--left {
    /* Positioned by Tailwind classes in HTML */
}

.portfolio-arrow--right {
    /* Positioned by Tailwind classes in HTML */
}

.portfolio-arrow:hover {
    background-color: #EFF6FF;
    border-color: #93C5FD;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25); /* Enhanced shadow on hover */
}

.portfolio-arrow:active {
    transform: translateY(-50%) scale(0.95); /* Visual feedback when clicked */
}

.portfolio-arrow:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: translateY(-50%);
    pointer-events: none;
}

/* Carousel Indicators */
.carousel-indicator {
    transition: all 0.3s ease;
    cursor: pointer;
}

.carousel-indicator:hover {
    transform: scale(1.2);
}

/* Enhanced mobile carousel adjustments */
@media (max-width: 768px) {
    .portfolio-arrow {
        padding: 0.75rem;
        min-width: 50px;
        min-height: 50px;
    }
    
    .portfolio-arrow svg {
        width: 1.5rem;
        height: 1.5rem;
    }
    
    /* Improve touch targets */
    .carousel-indicator {
        min-width: 44px;
        min-height: 44px;
        margin: 0.25rem;
    }
    
    /* Better spacing on mobile */
    #portfolio {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}