@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@600;800&family=Rajdhani:wght@500;700&display=swap');

:root {
    --bg-dark: #0a0e17;
    --card-bg: rgba(22, 31, 49, 0.85);
    --border-color: rgba(59, 130, 246, 0.25);
    --neon-blue: #00f0ff;
    --neon-purple: #ab00ff;
    --neon-green: #00ff66;
    --neon-red: #ff0055;
    --text-main: #e2e8f0;
    --text-muted: #94a3b8;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Rajdhani', sans-serif;
    letter-spacing: 0.5px;
}

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

/* Canvas do Fundo Animado com Opacidade Suave */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
    opacity: 0.35; /* Ajuste aqui: 0.2 = muito leve, 0.5 = médio */
}

/* Container Principal com Camada Acima do Fundo */
header, main, .container-box {
    position: relative;
    z-index: 10;
}

/* Tipografia Futurista */
h1, h2, h3, h4, .brand {
    font-family: 'Orbitron', sans-serif;
    text-transform: uppercase;
}

.brand-neon {
    color: #fff;
    text-shadow: 0 0 10px var(--neon-blue), 0 0 20px var(--neon-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Cabeçalho Cyberpunk */
header {
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
}

/* Botões Neon Glow */
.btn-neon {
    display: inline-block;
    padding: 10px 18px;
    border-radius: 6px;
    font-weight: 700;
    text-decoration: none;
    text-transform: uppercase;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid transparent;
    text-align: center;
}

.btn-blue {
    background: rgba(0, 240, 255, 0.1);
    color: var(--neon-blue);
    border-color: var(--neon-blue);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
}

.btn-blue:hover {
    background: var(--neon-blue);
    color: #000;
    box-shadow: 0 0 20px var(--neon-blue), 0 0 30px var(--neon-blue);
}

.btn-green {
    background: rgba(0, 255, 102, 0.1);
    color: var(--neon-green);
    border-color: var(--neon-green);
    box-shadow: 0 0 10px rgba(0, 255, 102, 0.2);
}

.btn-green:hover {
    background: var(--neon-green);
    color: #000;
    box-shadow: 0 0 20px var(--neon-green);
}

.btn-red {
    background: rgba(255, 0, 85, 0.1);
    color: var(--neon-red);
    border-color: var(--neon-red);
}

.btn-red:hover {
    background: var(--neon-red);
    color: #fff;
    box-shadow: 0 0 20px var(--neon-red);
}

/* Cards Interativos */
.grid-esquemas {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 25px;
    margin-top: 25px;
}

.card-tech {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px;
    position: relative;
    backdrop-filter: blur(8px);
    transition: transform 0.15s ease-out, border-color 0.3s, box-shadow 0.3s;
    transform-style: preserve-3d;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
}

.card-tech:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 12px 30px rgba(0, 240, 255, 0.3), 0 0 15px rgba(171, 0, 255, 0.2);
}

.card-tech img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Inputs Futuristas */
input[type="email"],
input[type="password"],
input[type="text"],
select {
    width: 100%;
    padding: 12px 15px;
    background: rgba(10, 14, 23, 0.9);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: #fff;
    font-size: 15px;
    outline: none;
    transition: all 0.3s;
    margin-top: 6px;
    margin-bottom: 15px;
}

input:focus, select:focus {
    border-color: var(--neon-blue);
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
}