/* Variables de Color e Iluminación Neón */
:root {
    --bg-dark: #05070f;
    --neon-cyan: #00f0ff;
    --neon-fuchsia: #ff007f;
    --neon-purple: #8b5cf6;
    --neon-amber: #fbbf24;
    --neon-emerald: #10b981;
    --glass-bg: rgba(7, 12, 27, 0.75);
    --glass-border: rgba(0, 240, 255, 0.2);
}

body {
    background-color: var(--bg-dark);
    font-family: 'Space Grotesk', system-ui, sans-serif;
    color: #f1f5f9;
    overflow-x: hidden;
    height: 100vh;
}

.font-syne {
    font-family: 'Syne', sans-serif;
}

.font-mono {
    font-family: 'JetBrains Mono', monospace;
}

/* Efectos de Cristal Líquido & Glassmorphism */
.liquid-glass-nav {
    background: rgba(8, 13, 30, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 240, 255, 0.2);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.glass-card {
    background: rgba(7, 12, 27, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.25s ease, box-shadow 0.25s ease;
}

.glass-card:hover {
    border-color: rgba(0, 240, 255, 0.35);
    box-shadow: 0 15px 35px rgba(0, 240, 255, 0.06);
}

.glass-card-translucent {
    background: rgba(9, 14, 31, 0.65);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(0, 240, 255, 0.2);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.glass-card-translucent:hover {
    border-color: rgba(0, 240, 255, 0.45);
    box-shadow: 0 20px 45px rgba(0, 240, 255, 0.12);
}

/* Typewriter Cursor Glow */
.typewriter-cursor {
    display: inline-block;
    color: var(--neon-cyan);
    font-weight: 700;
    margin-left: 2px;
    animation: blinkCursor 0.85s infinite;
    text-shadow: 0 0 10px var(--neon-cyan);
}

@keyframes blinkCursor {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}

/* Badges de Tecnologías */
.stack-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    background: rgba(15, 23, 42, 0.7);
    color: #cbd5e1;
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.2s ease;
}

.stack-badge:hover {
    border-color: var(--neon-cyan);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
    transform: translateY(-1px);
}

/* Cuadrícula Pathfinding A* */
.grid-container {
    display: grid;
    grid-template-columns: repeat(24, 1fr);
    gap: 4px;
    width: 100%;
    max-width: 600px;
}

.grid-cell {
    aspect-ratio: 1;
    border-radius: 4px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    transition: background 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.grid-cell:hover {
    filter: brightness(1.3);
    transform: scale(1.08);
    z-index: 5;
}

.grid-cell.wall {
    background: #0f172a;
    border-color: #334155;
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.8);
}

.grid-cell.start {
    background: var(--neon-emerald);
    border-color: #34d399;
    box-shadow: 0 0 12px var(--neon-emerald);
}

.grid-cell.target {
    background: var(--neon-fuchsia);
    border-color: #f472b6;
    box-shadow: 0 0 12px var(--neon-fuchsia);
}

.grid-cell.open-set {
    background: rgba(0, 240, 255, 0.35);
    border-color: rgba(0, 240, 255, 0.65);
    box-shadow: 0 0 8px rgba(0, 240, 255, 0.3);
}

.grid-cell.closed-set {
    background: rgba(88, 28, 135, 0.5);
    border-color: rgba(147, 51, 234, 0.4);
}

.grid-cell.path {
    background: var(--neon-amber);
    border-color: #fde047;
    box-shadow: 0 0 14px var(--neon-amber);
    animation: pathPulse 0.4s ease forwards;
}

@keyframes pathPulse {
    0% {
        transform: scale(0.6);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #05070f;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 240, 255, 0.3);
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 240, 255, 0.6);
}