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

:root{
    --bg:#0b1220;
    --panel:#141d2e;
    --panel-hover:#19243a;
    --border:#263552;
    --text:#f5f7ff;
    --muted:#9fb0d3;
    --primary:#3b82f6;
    --primary-hover:#60a5fa;
    --accent:#00d4ff;
}

body{
    min-height:100vh;
    padding:30px;
    background:
        radial-gradient(circle at top, #16213e 0%, #0b1220 45%, #050814 100%);
    color:var(--text);
    font-family:"Segoe UI", Arial, sans-serif;
}

/* TÍTULO */
h1{
    text-align:center;
    margin-bottom:35px;
    font-size:2rem;
    font-weight:700;
    letter-spacing:1px;
    color:white;
    text-shadow:0 0 20px rgba(59,130,246,.4);
}

/* LAYOUT */
.container{
    display:flex;
    gap:35px;
    justify-content:center;
    align-items:flex-start;
    flex-wrap:wrap;
}

/* PAINEL */
.controls{
    width:340px;
    background:rgba(20,29,46,.9);
    backdrop-filter:blur(10px);
    padding:24px;
    border-radius:20px;
    border:1px solid var(--border);
    box-shadow:
        0 15px 40px rgba(0,0,0,.35),
        inset 0 1px 0 rgba(255,255,255,.03);
    transition:.3s;
}

.controls:hover{
    background:var(--panel-hover);
}

/* CAMPOS */
.controls input[type="text"],
.controls input[type="date"]{
    width:100%;
    padding:12px 14px;
    margin-bottom:15px;
    border:1px solid transparent;
    border-radius:12px;
    background:#0f1728;
    color:var(--text);
    font-size:14px;
    transition:.25s;
}

.controls input[type="text"]:focus,
.controls input[type="date"]:focus{
    outline:none;
    border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(59,130,246,.15);
}

.control{
    margin-bottom:20px;
}

/* LABELS */
label{
    display:flex;
    justify-content:space-between;
    margin-bottom:8px;
    font-size:14px;
    color:var(--muted);
}

/* RANGE */
input[type="range"]{
    width:100%;
    cursor:pointer;
    accent-color:var(--primary);
}

/* BOTÃO */
button{
    width:100%;
    padding:14px;
    border:none;
    border-radius:14px;
    background:linear-gradient(
        135deg,
        var(--primary),
        var(--accent)
    );
    color:white;
    font-size:16px;
    font-weight:700;
    cursor:pointer;
    transition:.3s;
    box-shadow:0 8px 20px rgba(59,130,246,.3);
}

button:hover{
    transform:translateY(-2px);
    box-shadow:0 12px 30px rgba(59,130,246,.45);
}

button:active{
    transform:translateY(0);
}

/* LINK COM PULSAÇÃO AZUL */
a{
    color:#8ec5ff;
    text-decoration:none;
    transition:.3s;
}

a:hover{
    color:white;
    animation:pulseBlue 1s infinite;
}

@keyframes pulseBlue{
    0%{
        text-shadow:
            0 0 0 rgba(59,130,246,0);
    }

    50%{
        text-shadow:
            0 0 8px rgba(59,130,246,.8),
            0 0 18px rgba(59,130,246,.8),
            0 0 35px rgba(59,130,246,.6);
    }

    100%{
        text-shadow:
            0 0 0 rgba(59,130,246,0);
    }
}

/* CANVAS */
canvas{
    background:linear-gradient(
        180deg,
        #151f33,
        #0f1728
    );
    border:1px solid var(--border);
    border-radius:20px;
    cursor:crosshair;
    box-shadow:
        0 20px 45px rgba(0,0,0,.45),
        0 0 30px rgba(59,130,246,.08);
}

/* INFORMAÇÕES */
.info{
    margin-top:18px;
    font-size:13px;
    color:var(--muted);
    line-height:1.7;
}

/* RESPONSIVO */
@media (max-width:768px){

    body{
        padding:20px;
    }

    .controls{
        width:100%;
    }

    canvas{
        max-width:100%;
        height:auto;
    }
}