:root {
    --neon: #00ff88; /* Verde Lumiô Neon */
    --neon-dim: rgba(0, 255, 136, 0.2);
    --bg-dark: #050505;
    --panel-bg: rgba(20, 20, 20, 0.7);
    --border: #333;
    --text-main: #e0e0e0;
    --text-dim: #888;
    --font-tech: 'Rajdhani', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-tech); }

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background com Grid Futurista */
.cyber-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -1;
    pointer-events: none;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.top-bar {
    display: flex; justify-content: space-between; align-items: center;
    padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--border);
}
.logo h2 { font-size: 1.8rem; letter-spacing: 2px; }
.logo span { color: var(--neon); }
.status-dot { width: 10px; height: 10px; background: var(--neon); border-radius: 50%; box-shadow: 0 0 10px var(--neon); animation: pulse 2s infinite; }

/* Layout Principal */
.main-content {
    display: flex; gap: 20px; flex: 1; overflow: hidden;
}

/* Menu Lateral (Desktop) */
.cyber-menu {
    width: 200px; display: flex; flex-direction: column; gap: 10px;
    overflow-y: auto; padding-right: 10px;
}
.nav-btn {
    background: transparent; border: 1px solid transparent; color: var(--text-dim);
    padding: 12px; text-align: left; cursor: pointer; font-size: 1.1rem; font-weight: 600;
    transition: 0.3s; clip-path: polygon(0 0, 100% 0, 100% 85%, 90% 100%, 0 100%);
    display: flex; align-items: center; gap: 10px;
}
.nav-btn:hover { color: var(--neon); background: var(--neon-dim); }
.nav-btn.active {
    background: var(--neon); color: black; border-color: var(--neon);
    box-shadow: 0 0 15px var(--neon-dim);
}

/* Workspace (Editor + Preview) */
.workspace {
    flex: 1; display: flex; gap: 20px; overflow: hidden;
}

/* Painéis de Vidro */
.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 25px;
    display: flex; flex-direction: column;
}

/* Editor */
.editor-panel { flex: 2; overflow-y: auto; }
.panel-header { display: flex; align-items: center; margin-bottom: 25px; gap: 15px; }
.line-deco { flex: 1; height: 1px; background: linear-gradient(90deg, var(--neon), transparent); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; color: var(--neon); font-size: 0.9rem; margin-bottom: 8px; letter-spacing: 1px; }

.cyber-input, .form-control {
    width: 100%; background: rgba(0,0,0,0.5); border: 1px solid var(--border);
    color: var(--neon); padding: 12px; font-size: 1rem; outline: none; transition: 0.3s;
    font-family: 'Courier New', monospace;
}
.cyber-input:focus, .form-control:focus {
    border-color: var(--neon); box-shadow: 0 0 10px var(--neon-dim);
}

/* Customização */
.design-section { margin-top: 30px; padding-top: 20px; border-top: 1px dashed var(--border); }
.design-section h4 { color: var(--text-dim); margin-bottom: 15px; }
.design-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; margin-bottom: 15px; }
input[type="color"] { height: 40px; padding: 2px; cursor: pointer; }

.upload-btn {
    display: block; width: 100%; padding: 10px; text-align: center; border: 1px dashed var(--neon);
    color: var(--neon); cursor: pointer; transition: 0.3s;
}
.upload-btn:hover { background: var(--neon-dim); }
.file-status { display: block; text-align: center; font-size: 0.8rem; color: #666; margin-top: 5px; }

/* Preview */
.preview-panel {
    flex: 1; max-width: 350px; align-items: center; justify-content: center;
    border: 1px solid var(--neon); box-shadow: 0 0 20px rgba(0, 255, 136, 0.05);
}
.preview-header { 
    position: absolute; top: 0; left: 0; background: var(--neon); color: black; 
    padding: 2px 10px; font-size: 0.8rem; font-weight: bold; 
}

.qr-frame {
    position: relative; padding: 10px; background: white; border-radius: 4px; overflow: hidden;
}
/* Efeito Scanner */
.scanner-line {
    position: absolute; top: 0; left: 0; width: 100%; height: 5px; background: red;
    box-shadow: 0 0 10px red; opacity: 0.6; animation: scan 3s infinite linear; pointer-events: none;
}

.download-area { width: 100%; margin-top: 30px; display: flex; gap: 10px; }
.cyber-btn {
    flex: 1; background: var(--neon); border: none; font-weight: bold; cursor: pointer;
    text-transform: uppercase; font-size: 1rem; transition: 0.3s;
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0 100%, 0 25%);
}
.cyber-btn:hover { background: white; box-shadow: 0 0 15px white; }

/* --- RESPONSIVIDADE (Mobile) --- */
@media (max-width: 900px) {
    .app-container { height: auto; padding: 10px; display: block; }
    .main-content { flex-direction: column; overflow: visible; }
    
    /* Menu vira scroll horizontal */
    .cyber-menu {
        width: 100%; flex-direction: row; overflow-x: auto; padding-bottom: 10px;
        border-bottom: 1px solid var(--border); margin-bottom: 20px;
    }
    .nav-btn { min-width: 110px; justify-content: center; font-size: 0.9rem; }

    .workspace { flex-direction: column-reverse; /* Preview em cima ou embaixo? Vamos deixar inputs primeiro */ }
    
    .preview-panel { 
        max-width: 100%; width: 100%; padding: 40px 20px; margin-bottom: 20px; 
        order: -1; /* Joga o preview para o TOPO no mobile para ver o resultado */
    }
    .editor-panel { overflow: visible; }
}

@keyframes pulse { 0% { opacity: 1; } 50% { opacity: 0.5; } 100% { opacity: 1; } }
@keyframes scan { 0% { top: 0; } 50% { top: 100%; } 100% { top: 0; } }