/* ==================== FreeFineAI Common Styles ==================== */

* { box-sizing: border-box; }

body {
    background-color: #050505;
    color: #a1a1aa;
    font-family: 'Inter', sans-serif;
    margin: 0;
    overflow-x: hidden;
    position: relative;
}

/* Navigation */
.nav-glass {
    background: rgba(5,5,5,0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

/* Typography */
.gradient-text {
    background: linear-gradient(135deg, #06b6d4 0%, #a78bfa 50%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, rgba(6,182,212,0.75), rgba(220,234,237,0.6));
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}
.btn-primary:hover {
    background: linear-gradient(135deg, rgba(6,182,212,0.9), rgba(220,234,237,0.8));
    box-shadow: 0 8px 30px rgba(6,182,212,0.3);
    transform: translateY(-2px);
}

/* Cards */
.card-hover { transition: all 0.3s ease; }
.card-hover:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,0.4); }

.image-card { transition: all 0.4s ease; }
.image-card:hover { transform: scale(1.02); }
.image-card img { transition: transform 0.4s ease; }
.image-card:hover img { transform: scale(1.05); }

/* Particle Canvas */
#particle-canvas {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 1;
    pointer-events: none;
}
nav, header, section, footer { position: relative; z-index: 2; }

/* Animations */
.section-fade { animation: fadeInUp 0.6s ease forwards; opacity: 0; }
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Size preset buttons */
.size-preset-btn.active {
    background: rgba(6,182,212,0.2);
    border-color: #06b6d4;
    color: #22d3ee;
}

/* Auth Modal */
.auth-modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.85);
    z-index: 9997;
    align-items: center;
    justify-content: center;
}