/* ========== BASE STYLES ========== */
/* Reset, Body, Background Elements */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    min-height: 100vh;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0a0a0f 100%);
    background-attachment: fixed;
    color: #ffffff;
    overflow-x: hidden;
}

/* Animated gradient background */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(120, 80, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255, 100, 150, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(80, 200, 255, 0.08) 0%, transparent 60%);
    animation: gradientPulse 8s ease-in-out infinite;
    z-index: 0;
    pointer-events: none;
}

/* Particle canvas */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Grid overlay */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: 2;
    pointer-events: none;
}

/* Glowing orbs */
.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    z-index: 0;
    animation: float 10s ease-in-out infinite;
    pointer-events: none;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: rgba(138, 100, 255, 0.4);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 350px;
    height: 350px;
    background: rgba(255, 100, 180, 0.3);
    bottom: -100px;
    right: -100px;
    animation-delay: -3s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: rgba(100, 200, 255, 0.3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -6s;
}

/* Mouse glow effect */
.mouse-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(150, 120, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: 3;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* Section common styles */
.section-title {
    text-align: center;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #ffffff, #b8b8ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 600px;
    margin: 0 auto 4rem;
    line-height: 1.6;
}

/* ========== RESPONSIVE BASE ========== */
@media (max-width: 768px) {
    .orb {
        filter: blur(60px);
        opacity: 0.3;
    }

    .orb-1 {
        width: 250px;
        height: 250px;
    }

    .orb-2 {
        width: 200px;
        height: 200px;
    }

    .orb-3 {
        width: 180px;
        height: 180px;
    }
}