:root {
    --bg: #0d0d0d;
    --surface: #141414;
    --border: #2a2a2a;
    --green:#00ff88;
    --limegreen: #88ff00;
    --cyan:#00cfff;
    --yellow:#ffd600;
    --red:#ff4f4f;
    --gray:#888;
    --white:#e8e8e8;
    --orange: #ff8800;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg);
    color: var(--white);
    font-family: 'Courier New', monospace;
    min-height: 100vh;
    padding: 40px 20px;
}

#app {
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 28px;
}

header h1 { font-size: 2rem; letter-spacing: 0.1em; }
header h1 span { color: var(--green); }
header p { color: var(--gray); font-size: 13px; margin-top: 4px; }

#input-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

#contrasena-input {
    flex: 1;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px 16px;
    color: var(--white);
    font-family: 'Courier New', monospace;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s;
    letter-spacing: 0.1em;
}
#contrasena-input:focus { border-color: var(--green); }
#contrasena-input::placeholder { color: var(--gray); letter-spacing: 0; }

#btn-alternar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 10px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s;
}
#btn-alternar:hover { border-color: var(--green); } 

#barra-fuerza-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 10px;
}

#barra-fuerza {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

#nivel-fuerza {
    height: 100%;
    width: 0%;
    border-radius: 3px;
    transition: width 0.4s ease, background 0.4s ease;
}

#etiqueta-fuerza {
    font-size: 12px;
    color: var(--gray);
    min-width: 80px;
    text-align: right;
    transition: color 0.3s;
}

#panel-metricas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.tarjeta-metrica {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
}

.valores-metricos {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--white);
}

.etiqueta-metrica {
    font-size: 11px;
    color: var(--gray);
}

#seccion-chequeo, #seccion-sugerencias {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

#seccion-chequeo h3, #seccion-sugerencias h3 {
    font-size: 12px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.1em; 
}

#lista-chequeo {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px 24px;
    align-items: start;
}

.item-chequeo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--gray);
    transition: color 0.2s;
}

.item-chequeo.pass { color: var(--white); }
.item-chequeo.fail { color: var(--gray); }

.dot-chequeo {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    flex-shrink: 0;
    transition: background 0.2s, box-shadow 0.2s;
}

.item-chequeo.pass .dot-chequeo {
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
}

.item-chequeo.fail .dot-chequeo {
    background: var(--red);
    box-shadow: 0 0 4px var(--red);
}

#lista-sugerencias {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#lista-sugerencias li {
    font-size: 12px;
    color: var(--yellow);
    padding-left: 12px;
    border-left: 2px solid var(--yellow);
    opacity: 0.85;
}

.hidden { display: none !important; }

@media (max-width: 600px) {
    #lista-chequeo {
        grid-template-columns: 1fr;
    }

    #panel-metricas {
        grid-template-columns: 1fr 1fr;
    }

    .valores-metricos {
        font-size: 1.2rem;
    }

    #seccion-chequeo {
        padding: 14px;
    }
}