:root {
    --bg-color: #030303;
    --accent-color: #00f2ff;
    --accent-glow: rgba(0, 242, 255, 0.5);
    --secondary-color: #7000ff;
}

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

body {
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    margin: 0;
}

/* Sophisticated background gradient */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, #0a0a0a 0%, #030303 100%);
    z-index: -1;
}

.loader-container {
    position: relative;
    width: 100px;
    height: 100px;
}

/* Outer glowing ring */
.ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px solid transparent;
    border-top: 2px solid var(--accent-color);
    border-radius: 50%;
    animation: rotate 1.5s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.ring:nth-child(2) {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-top: 2px solid transparent;
    border-bottom: 2px solid var(--secondary-color);
    animation: rotate-reverse 2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    filter: drop-shadow(0 0 8px rgba(112, 0, 255, 0.3));
}

.ring:nth-child(3) {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-top: 2px solid var(--accent-color);
    opacity: 0.5;
    animation: rotate 1s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes rotate-reverse {
    from { transform: rotate(360deg); }
    to { transform: rotate(0deg); }
}

/* Subtle pulse effect for the container */
.loader-container::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: var(--accent-color);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent-color), 0 0 40px var(--accent-color);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
    50% { transform: translate(-50%, -50%) scale(1.5); opacity: 0.4; }
}