html {
    -webkit-tap-highlight-color: transparent;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Loader Styles */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #0f172a;
    /* Slate 900 to match dark theme default */
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.loader-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: #6366f1;
    /* Indigo 500 */
    animation: spin 1s ease-in-out infinite;
}

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

/* Glass Header */
.glass-header {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

.dark .glass-header {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
}

/* Enhanced Light Mode Background */
body:not(.dark) {
    background-color: #f8fafc;
    /* Slate 50 */
    background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
    background-size: 32px 32px;
}

/* Modern Text Selection */
::selection {
    background-color: rgba(99, 102, 241, 0.2);
    color: inherit;
}

.dark ::selection {
    background-color: rgba(129, 140, 248, 0.3);
}

/* Refined Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(156, 163, 175, 0.5);
    border-radius: 4px;
    border: 2px solid transparent;
    background-clip: content-box;
    transition: background-color 0.2s;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(107, 114, 128, 0.8);
}

.dark ::-webkit-scrollbar-thumb {
    background-color: rgba(75, 85, 99, 0.5);
}

.dark ::-webkit-scrollbar-thumb:hover {
    background-color: rgba(107, 114, 128, 0.8);
}

/* Smooth Fade Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fadeInUp {
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.fade-in-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

[x-cloak] {
    display: none !important;
}

.font-mono-header {
    font-family: 'Fira Code', monospace;
    letter-spacing: -0.025em;
}