/**
 * eMitraTool.online — Ultra-Modern Neon Glassmorphism Back Button & Universal Navigation
 * File: css/neon-back-btn.css
 * 
 * Features:
 * - 💎 Authentic Translucent Glassmorphism with Frosted Backdrop Blur
 * - ⚡ Dual-Theme Adaptation (Light Mode & Dark Mode Seamless Support)
 * - 🌈 Vibrant Neon Glow Halo Effect on Hover & Focus
 * - 🏹 Animated Arrow Interaction with Physics Easing
 * - 📱 100% Responsive on Mobile, Tablet, and Desktop Displays
 */

:root {
    --neon-cyan: #00f2fe;
    --neon-blue: #0284c7;
    --neon-glow-light: 0 0 16px rgba(2, 132, 199, 0.4), 0 0 32px rgba(0, 242, 254, 0.25), inset 0 0 8px rgba(255, 255, 255, 0.6);
    --neon-glow-dark: 0 0 20px rgba(56, 189, 248, 0.65), 0 0 45px rgba(14, 165, 233, 0.4), inset 0 0 12px rgba(56, 189, 248, 0.35);
}

/* Base Neon Glassmorphism Button */
.neon-back-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.45rem 1rem;
    font-family: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.015em;
    color: #0369a1;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(2, 132, 199, 0.28);
    border-radius: 0.85rem;
    text-decoration: none !important;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 15px -2px rgba(2, 132, 199, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.8);
    user-select: none;
    z-index: 20;
}

/* Arrow Icon Transition */
.neon-back-btn i {
    font-size: 0.95rem;
    color: #0284c7;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s ease;
}

/* Light Mode Hover Effect */
.neon-back-btn:hover {
    color: #0284c7;
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(2, 132, 199, 0.65);
    box-shadow: var(--neon-glow-light);
    transform: translateY(-2px) scale(1.02);
}

.neon-back-btn:hover i {
    transform: translateX(-4px);
    color: #0284c7;
}

.neon-back-btn:active {
    transform: translateY(0) scale(0.98);
}

/* Subtle Shimmer Light Sweep Effect */
.neon-back-btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -100%;
    width: 60%;
    height: 200%;
    background: linear-gradient(
        60deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.4) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(25deg);
    transition: all 0.6s ease;
    pointer-events: none;
}

.neon-back-btn:hover::after {
    left: 140%;
}

/* 🌙 Dark Mode / Dark Theme Neon Glassmorphism */
[data-theme="dark"] .neon-back-btn,
.dark .neon-back-btn,
body.dark-mode .neon-back-btn,
[class*="dark"] .neon-back-btn {
    color: #38bdf8;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.38);
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .neon-back-btn i,
.dark .neon-back-btn i,
body.dark-mode .neon-back-btn i,
[class*="dark"] .neon-back-btn i {
    color: #38bdf8;
}

[data-theme="dark"] .neon-back-btn:hover,
.dark .neon-back-btn:hover,
body.dark-mode .neon-back-btn:hover,
[class*="dark"] .neon-back-btn:hover {
    color: #ffffff;
    background: rgba(14, 165, 233, 0.22);
    border-color: #38bdf8;
    box-shadow: var(--neon-glow-dark);
}

[data-theme="dark"] .neon-back-btn:hover i,
.dark .neon-back-btn:hover i,
body.dark-mode .neon-back-btn:hover i,
[class*="dark"] .neon-back-btn:hover i {
    color: #ffffff;
}

/* Responsive Floating Back Button (For mobile layouts if needed) */
@media (max-width: 640px) {
    .neon-back-btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
        border-radius: 0.75rem;
    }
    .neon-back-btn span.back-text-hide-mobile {
        display: none;
    }
}