:root {
    --bg-primary: #0D1117;
    --bg-secondary: #161B22;
    --accent-blue: #388BFD;
    --accent-purple: #A371F7;
    --border-color: #30363D;
    --text-primary: #C9D1D9;
    --text-secondary: #8B949E;
    --success-green: #238636;
    --warning-yellow: #d29922;
    --danger-red: #da3633;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* --- Preloader --- */
#preloader {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-primary); z-index: 1000; display: flex;
    justify-content: center; align-items: center; transition: opacity 0.5s ease-out;
}
.loader {
    width: 50px; height: 50px; border: 4px solid var(--border-color);
    border-top-color: var(--accent-blue); border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Custom scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 10px; }

/* Animation classes */
.fade-in-up {
    opacity: 0; transform: translateY(40px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}
.fade-in-up.visible { opacity: 1; transform: translateY(0); }
 
/* Gradient & Shimmer Text */
.gradient-text {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.shimmer-text {
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple), var(--accent-blue));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shimmer 3s linear infinite;
}
@keyframes shimmer {
    to {
        background-position: -200% center;
    }
}
 
/* Enhanced Feature Card Styling */
.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-blue);
    box-shadow: 0 0 25px rgba(56, 139, 253, 0.2);
}
 
/* Enhanced Button Styling */
.btn-primary {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary:hover {
    box-shadow: 0 0 25px rgba(56, 139, 253, 0.5);
    transform: scale(1.05);
}
 
/* Navbar Enhancements */
.header-scrolled {
    background-color: rgba(13, 17, 23, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}
.nav-link {
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-blue);
    transition: width 0.3s ease;
}
.nav-link:hover::after {
    width: 100%;
}

/* Report Styling */
.report-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

#investment-score-card {
    position: -webkit-sticky; /* For Safari */
    position: sticky;
    top: 100px; /* Adjust this value based on your header's height */
    z-index: 10;
}

#score-circle {
    border-width: 8px;
    border-style: solid;
    transition: border-color 0.5s ease, color 0.5s ease;
}

/* Progress Bar */
.progress-bar-container {
    width: 100%;
    background-color: var(--border-color);
    border-radius: 9999px;
    overflow: hidden;
}

#progress-bar {
    height: 12px;
    width: 0%;
    background-color: var(--accent-blue);
    border-radius: 9999px;
    transition: width 0.5s ease-in-out;
}

/* Tech Stack Logo Styling */
.tech-logo {
    filter: grayscale(100%) brightness(150%);
    transition: filter 0.3s ease;
}
.tech-logo:hover {
    filter: grayscale(0%) brightness(100%);
}