/* ==========================================================================
   1. Dynamic CSS Variables & Glassmorphism Core
   ========================================================================== */
:root {
    /* Main Theme Colors */
    --bg-dark: #090d16;
    --bg-dark-secondary: #0f172a;
    /* Neon Branding Colors */
    --neon-blue: #0078D4;
    --neon-purple: #512BD4;
    --neon-cyan: #00d2ff;
    /* Glassmorphism Specs */
    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-bg-hover: rgba(30, 41, 59, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-glow: rgba(0, 120, 212, 0.4);
    --glass-blur: blur(16px);
    /* Shadows & Glows */
    --neon-glow-blue: 0 0 20px rgba(0, 120, 212, 0.35);
    --neon-glow-purple: 0 0 20px rgba(81, 43, 212, 0.35);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

/* Background Setup */
body {
    background-color: var(--bg-dark);
    color: #e2e8f0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    overflow-x: hidden;
}

/* Background Radial Glow Effect */
.gradient-bg {
    background: radial-gradient(circle at 15% 20%, rgba(0, 120, 212, 0.15) 0%, transparent 45%), radial-gradient(circle at 85% 80%, rgba(81, 43, 212, 0.15) 0%, transparent 45%), radial-gradient(circle at 50% 50%, rgba(9, 13, 22, 0.8) 0%, var(--bg-dark) 100%);
    pointer-events: none;
}

/* ==========================================================================
   2. Glassmorphism Header & Navbar
   ========================================================================== */
.portfolio-header.fixed-top {
    background: rgba(9, 13, 22, 0.7) !important;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

    .portfolio-header.fixed-top.scrolled {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        border-bottom: 1px solid var(--glass-border-glow);
    }

/* Brand Neon Effect */
.navbar-brand span {
    background: linear-gradient(135deg, #ffffff 0%, var(--neon-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 12px rgba(0, 120, 212, 0.3);
}

/* Nav Links Styling */
.navbar-nav .nav-link {
    color: #94a3b8 !important;
    border-radius: 20px;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
    font-weight: 500;
}

    .navbar-nav .nav-link:hover,
    .navbar-nav .nav-link.active {
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.05);
        box-shadow: inset 0 0 10px rgba(0, 120, 212, 0.2);
        text-shadow: 0 0 8px rgba(0, 120, 212, 0.6);
    }

        .navbar-nav .nav-link.active i {
            color: var(--neon-blue);
            filter: drop-shadow(0 0 6px var(--neon-blue));
        }

/* Buttons with Glass & Neon Effect */
.btn-icon {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: var(--glass-blur);
    color: #e2e8f0;
    transition: all 0.3s ease;
}

    .btn-icon:hover {
        border-color: var(--neon-blue);
        color: #fff;
        box-shadow: var(--neon-glow-blue);
        transform: translateY(-2px);
    }

/* Primary Glass Button (Download CV / CTA) */
.btn-primary {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple)) !important;
    border: none !important;
    box-shadow: 0 4px 15px rgba(0, 120, 212, 0.4);
    transition: all 0.3s ease !important;
    font-weight: 600;
}

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 25px rgba(81, 43, 212, 0.6) !important;
    }

/* ==========================================================================
   3. Glass Cards Component (Use for Projects, Skills & Forms)
   ========================================================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

    /* Glass Card Glowing Edge on Hover */
    .glass-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, var(--neon-blue), transparent);
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .glass-card:hover {
        transform: translateY(-5px);
        border-color: var(--glass-border-glow);
        box-shadow: 0 12px 40px rgba(0, 120, 212, 0.15);
    }

        .glass-card:hover::before {
            opacity: 1;
        }

/* ==========================================================================
   4. Glass Form Controls & Inputs
   ========================================================================== */
.form-control, .form-select {
    background: rgba(15, 23, 42, 0.6) !important;
    border: 1px solid var(--glass-border) !important;
    color: #f8fafc !important;
    backdrop-filter: blur(8px);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

    .form-control:focus, .form-select:focus {
        border-color: var(--neon-blue) !important;
        box-shadow: 0 0 15px rgba(0, 120, 212, 0.3) !important;
        background: rgba(15, 23, 42, 0.8) !important;
    }

/* ==========================================================================
   5. Skeleton Loading Animation (Neon Glow)
   ========================================================================== */
.skeleton {
    background: linear-gradient(90deg, rgba(30, 41, 59, 0.6) 25%, rgba(51, 65, 85, 0.8) 50%, rgba(30, 41, 59, 0.6) 75%);
    background-size: 200% 100%;
    animation: skeleton-glow 1.5s infinite;
    border-radius: 8px;
}

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

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


/* ==========================================================================
   Footer Glassmorphism & Neon Accents
   ========================================================================== */
.footer-portfolio {
    background: rgba(9, 13, 22, 0.75) !important;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(255, 255, 255, 0.08) !important;
    position: relative;
    z-index: 10;
    transition: all 0.3s ease;
}

    /* Upper Glowing Neon Line */
    .footer-portfolio::before {
        content: '';
        position: absolute;
        top: -1px;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent 0%, var(--neon-blue, #0078D4) 30%, var(--neon-purple, #512BD4) 70%, transparent 100%);
        opacity: 0.8;
    }

/* Text & Separator Colors */
.footer-text {
    color: #94a3b8;
    font-weight: 400;
}

.footer-separator {
    color: rgba(255, 255, 255, 0.15);
}

/* Links & Hover Effects */
.footer-link {
    color: #cbd5e1;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
}

    .footer-link:hover {
        color: #ffffff;
        text-shadow: 0 0 10px rgba(0, 120, 212, 0.7);
        transform: translateY(-2px);
    }

        .footer-link:hover i {
            color: #00d2ff;
            filter: drop-shadow(0 0 6px rgba(0, 210, 255, 0.8));
        }

/* Social Icons Container & Glowing Effect */
.footer-social-icons .footer-link {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    justify-content: center;
}

    .footer-social-icons .footer-link:hover {
        background: rgba(0, 120, 212, 0.15);
        border-color: rgba(0, 120, 212, 0.5);
        box-shadow: 0 0 15px rgba(0, 120, 212, 0.4);
    }